A large-diameter dual-start intelligent fire sprinkler head

Abstract

This invention discloses a large-diameter dual-start intelligent fire sprinkler head, comprising a body, a plug, a passive triggering mechanism, an active triggering mechanism, and a separation spring. The body includes a water inlet channel and a frame. The passive triggering mechanism is a temperature sensing mechanism including a pressure plate and a hollow support sleeve. The support sleeve has a perforated window on its peripheral wall. A ball seat is installed at the upper end of the support sleeve, and the upper end of the ball seat abuts against the plug to block the outlet of the water inlet channel. The lower end of the support sleeve is movably hinged to the pressure plate by a pin. The axis of the pin is perpendicular to the axis of the support sleeve and has a distance L. A glass ball is abutted between the pressure plate and the ball seat. At least part of the glass ball is located inside the support sleeve and is visible at the window. The lower end of the glass ball is offset from the axis of the support sleeve and is located on the opposite side of the pin.

Description

Technical Field

[0001] This invention relates to the field of fire sprinkler technology, specifically a large-diameter dual-start intelligent fire sprinkler head. Background Technology

[0002] The applicant discloses a large-diameter nozzle temperature sensing mechanism and a large-diameter nozzle (authorization announcement number CN211798488U), including a temperature sensing trigger device, a support frame with a first support foot, a second support foot, a third support foot and a support edge, a first receiving cavity, a positioning step, and symmetrically arranged stabilizing tongues bent towards the first support foot at both ends of the support edge; a pressure block with a guide groove at one end, a threaded hole at the other end, and a shoulder in the middle that matches the stabilizing tongue; a second receiving cavity on the glass ball screw; and a glass ball for temperature sensing, one end of which is mounted on the first receiving cavity. The other end is installed in the second receiving cavity; a large-diameter nozzle includes a nozzle body, a plug, and a conical screw. The nozzle body is provided with a water outlet channel and a nozzle frame. The plug is set on the water outlet end face of the water outlet channel. The conical screw is screwed onto the nozzle frame and is coaxial with the plug. This solves the problem of the small load capacity of the glass ball in the temperature-sensing trigger device. Moreover, the temperature-sensing mechanism can form a stable structure after assembly, which is convenient for assembly. At the same time, the bending directions of the various support legs and technical support edges of the support frame are different, resulting in many processing steps and low material utilization. Further improvements are still necessary. Summary of the Invention

[0003] The purpose of this invention is to provide a large-diameter dual-start intelligent fire sprinkler head to solve the problems in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a large-diameter dual-start intelligent fire sprinkler head, comprising a body 1, a plug 3, a passive trigger starting mechanism, an active trigger starting mechanism, and a separation spring 10. The body 1 includes a water inlet channel 101 and a frame 102. The passive trigger starting mechanism is a temperature sensing mechanism 5, comprising a pressure plate 504 and a hollow support sleeve 502. The support sleeve 502 has a perforated window 5021 on its peripheral wall. A ball seat 501 is mounted on the upper end of the support sleeve 502. The upper end of the ball seat 501 is connected to... The plug 3 abuts against the outlet of the water inlet channel 101. The lower end of the support sleeve 502 is movably hinged to the pressure plate 504 via a pin 4. The axis of the pin 5 is perpendicular to the axis of the support sleeve 502 and has a distance L1. A glass ball 503 is abutting between the pressure plate 504 and the ball seat 501. At least a portion of the glass ball 503 is located inside the support sleeve 502 and is visible at the window 5021. The lower end of the glass ball 503 is offset from the axis of the support sleeve 502 and is located on the opposite side of the pin 5.

[0005] Furthermore, the lower end of the support sleeve 502 is provided with a first fork 5022, and the upright plate 5045 formed by the inward folding of both sides of the pressure plate 504 is provided with a second fork 5044. The first fork 5022 and the second fork 5044 are oppositely and movably engaged with the pin 4, and the upright plate 5045 is located on the inner side of the inner wall of the support sleeve 502.

[0006] Furthermore, the pressure plate 504 has a warped portion 5043 at one end and a receiving cavity 5042 at the other end. The bottom of the pressure plate 504 has a conical recess 5041. The center line of the recess 5041 is collinear with the axis of the support sleeve 502. Let C be the intersection point of the axis of the receiving cavity 5042 and the bottom surface of the pressure plate 504. Let L2 be the distance from the intersection point C to the axis of the support sleeve 502. Then 0.2≤L1:L2≤0.25.

[0007] Furthermore, the lower end face of the ball seat 501 is provided with a receiving hole 5011 that is adapted to the receiving cavity 5042. The two ends of the glass ball 503 are respectively connected to the receiving hole 5011 and the receiving cavity 5042. The upper end of the ball seat 501 is provided with a flange 5013 and a cylindrical section 5012. The lower end face of the flange 5013 abuts against the upper end of the support sleeve 502. The cylindrical section 5012 and the flange 5013 are connected by a tapered surface. The cylindrical section 5012 extends into the countersunk hole 301 at the lower end of the plug 3 and the tapered surface contacts and fits with the edge of the countersunk hole 301.

[0008] Furthermore, a conical screw 6 is screwed onto the bottom of the frame 102, the conical screw 6 abuts against the recess 5041, and a sealing gasket 2 is provided between the plug 3 and the outlet of the water inlet channel 101.

[0009] Furthermore, the active triggering mechanism includes a bracket 7 connected to the frame 102. The bracket 7 is used to install a guide sleeve 8. An impact block 9 is installed inside the guide sleeve 8. The front end of the impact block 9 faces the glass ball 503. An electric initiator 11 is installed on one end of the guide sleeve 8 away from the impact block 9. The electric initiator 11 is electrically connected to the fire alarm detection and control system.

[0010] The beneficial effects of this invention are as follows: Using a cylindrical support sleeve with a window as the main support component provides high rigidity and stability, while also simplifying processing and saving raw materials; the window prevents the glass bulb from being obstructed, maintaining temperature sensitivity; the fork and pin connection with the opening forms a movable hinge structure, facilitating assembly and ensuring good stability during operation; in the event of a fire, after the glass bulb spontaneously explodes, the temperature-sensing mechanism quickly collapses, allowing the extinguishing liquid to be sprayed out from the outlet promptly; simultaneously, the active triggering mechanism allows for remote operation to actively break the glass bulb and activate the nozzle, providing good safety redundancy and enabling intelligent operation. Attached Figure Description

[0011] Figure 1 This is a perspective view of the present invention;

[0012] Figure 2 This is a cross-sectional view of the present invention;

[0013] Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle;

[0014] Figure 4 This is a front view of the temperature sensing mechanism of the present invention;

[0015] Figure 5 This is a perspective view of the pressure plate structure of the present invention. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention. Please refer to... Figure 1-5A large-diameter dual-start intelligent fire sprinkler head includes a body 1, a plug 3, a passive trigger starting mechanism, an active trigger starting mechanism, and a separation spring 10. The body 1 includes a water inlet channel 101 and a frame 102. The passive trigger starting mechanism is a temperature sensing mechanism 5, including a pressure plate 504 and a hollow support sleeve 502. The support sleeve 502 has a perforated window 5021 on its peripheral wall. The cylindrical support sleeve 502 with the window serves as the main support component, which has the advantages of good rigidity and stability. At the same time, it is easy to process and saves raw materials. The window prevents the glass ball from being blocked, thus maintaining the temperature sensing sensitivity. A ball seat 501 is installed at the upper end of the support sleeve 502. The upper end of the ball seat 501 abuts against the plug 3 to block the outlet of the water inlet channel 101. The lower end of the support sleeve 502 is movably hinged to the pressure plate 504 by a pin 4. The axis of the pin 5 is perpendicular to the axis of the support sleeve 502 and has a certain degree of flexibility. A glass ball 503 is abutting between the pressure plate 504 and the ball seat 501 at a distance L1. At least a portion of the glass ball 503 is located inside the support sleeve 502 and is visible at the window 5021. The lower end of the glass ball 503 is offset from the axis of the support sleeve 502 and is located on the opposite side of the pin 5. In a preferred embodiment, one end of the pressure plate 504 is provided with a warped portion 5043, and the other end is provided with a receiving cavity 5042. A conical recess 5041 is provided at the bottom of the pressure plate 504. The center line of the recess 5041 is collinear with the axis of the support sleeve 502. Let C be the intersection point of the axis of the receiving cavity 5042 and the bottom surface of the pressure plate 504. Let L2 be the distance from the intersection point C to the axis of the support sleeve 502. Then 0.2≤L1:L2≤0.25. A conical screw 6 is screwed into the bottom of the frame 102. The conical screw 6 abuts against the recess 5041. A sealing gasket 2 is provided between the plug 3 and the outlet of the water inlet channel 101.

[0017] In this way, the temperature sensing mechanism 5 can be stably fixed in the frame 102, and the outlet of the water inlet channel 101 can be sealed. By reasonably setting the ratio of L1 to L2, when the conical screw 6 tightens the pressure plate 504, the main component of its force acts directly on the support sleeve 502, and the other component makes the pressure plate 504 press the glass ball 503 against the ball seat 501, thereby making the pressure plate 504 in a stable state, that is, the temperature sensing mechanism 5 in a stable state, and reducing the pressure on the glass ball 503, ensuring that the nozzle remains stable in the duty state. At the same time, when the glass ball 503 breaks due to temperature sensing or is broken by the active triggering mechanism, the extinguishing agent pushes the support sleeve 502 through the plug 3 and the pre-tightening force of the conical screw 6, causing the pressure plate 504 to flip quickly, the support sleeve 502 to move downward, and the plug 3 to disengage instantly under the action of the separation spring 10, and the nozzle starts the fire extinguishing action.

[0018] In a further preferred embodiment, the lower end of the support sleeve 502 has a first fork 5022, and the upright plate 5045 formed by the inward folding of both sides of the pressure plate 504 has a second fork 5044 coaxially formed. The first fork 5022 and the second fork 5044 are movably engaged with the pin 4, and the upright plate 5045 is located on the inner side of the inner wall of the support sleeve 502. The lower end face of the ball seat 501 has a receiving hole 5011 that matches the receiving cavity 5042, and the two ends of the glass ball 503 are respectively connected to the receiving hole 5011 and the receiving cavity 5042. The cavity 5042 is connected, and the upper end of the ball seat 501 is provided with a flange 5013 and a cylindrical section 5012. The lower end face of the flange 5013 abuts against the upper end of the support sleeve 502. The cylindrical section 5012 and the flange 5013 have a tapered surface connection. The cylindrical section 5012 extends into the countersunk hole 301 at the lower end of the plug 3, and the tapered surface contacts and fits with the edge of the countersunk hole 301. With the above settings, during assembly, the water inlet channel 101 end of the body 1 is placed downward on the workbench, because the water inlet channel The 101 port face is a circular plane, which facilitates the stable placement of the main body 1. Then, the sealing gasket 2 and the plug 3 are installed into the outlet of the water channel 101 in sequence. The cylindrical section 5012 of the ball seat 501 is inserted into the countersunk hole 301 at the lower end of the plug 3 so that the conical surface contacts and fits with the edge of the countersunk hole 301. Then, the upper end of the support sleeve 502 is put onto the ball seat 501, and the tip of the glass ball 503 is inserted into the receiving hole 5011. Since the first fork 5022 and the second fork 5044 are both open... The fork-shaped opening allows the pin 5 to be directly inserted into the first fork 5022. Then, the second fork 5044 of the pressure plate 504 is fastened to the lower end of the support sleeve 502 with the pin 5 facing it, and the spherical end of the glass ball 503 is placed at the edge of the receiving cavity 5042. Then, the tapered screw 6 is screwed into the bottom of the frame 102, so that the tapered screw 6 abuts against the recess 5041 and is tightened to the set torque, thus completing the assembly of the temperature sensing mechanism 5 and sealing the outlet of the water inlet channel 101. The installation is convenient and quick.

[0019] In a further preferred embodiment, the active triggering mechanism includes a bracket 7 connected to the frame 102. The bracket 7 is used to install a guide sleeve 8. An impact block 9 is installed inside the guide sleeve 8, with the front end of the impact block 9 facing the glass bulb 503. An electric initiator 11 is installed at the end of the guide sleeve 8 away from the impact block 9. The electric initiator 11 is electrically connected to the fire alarm detection and control system. Here, the electric initiator 11 adopts an electric detonating tube or a gas-generating agent structure activated by the electric initiator. By electrically connecting the electric initiator 11 to the fire alarm detection and control system, when a fire occurs, the fire alarm detection and control system can remotely activate the system to break the glass bulb 503, thereby activating the sprinkler head to extinguish the fire. This has the advantages of high safety redundancy and high level of intelligence, and has significant advantages in fire fighting in large spaces such as warehouses, tunnels, and atriums. As described above, after completing the assembly of the temperature sensing mechanism 5 and sealing the outlet of the water inlet channel 101, the bracket 7 can be connected to the frame 102 with fasteners, and the guide sleeve 8, impact block 9, and electric initiator 11 can be installed to complete the overall assembly of the sprinkler head. The assembly is convenient and the production efficiency is high.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0021] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0022] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A large-diameter dual-start intelligent fire sprinkler head, comprising a body (1), a plug (3), a passive trigger starting mechanism, an active trigger starting mechanism, and a separation spring (10), wherein the body (1) comprises a water inlet channel (101) and a frame (102), characterized in that: The passive triggering mechanism is a temperature sensing mechanism (5) including a pressure plate (504) and a hollow support sleeve (502). The support sleeve (502) has a perforated window (5021) on its peripheral wall. A ball seat (501) is installed on the upper end of the support sleeve (502). The upper end of the ball seat (501) abuts against the plug (3) to block the outlet of the water inlet channel (101). The lower end of the support sleeve (502) is connected to the pressure plate (504) by a pin (4). The pin (5) is hinged to the support sleeve (502) and the axis of the pin (502) is perpendicular to the axis of the support sleeve (502) and there is a distance L1. A glass ball (503) is provided between the pressure plate (504) and the ball seat (501). At least a part of the glass ball (503) is located inside the support sleeve (502) and is visible at the window (5021). The lower end of the glass ball (503) is offset from the axis of the support sleeve (502) and is located on the opposite side of the pin (5). The lower end of the support sleeve (502) is provided with a first fork (5022), and the upright plate (5045) formed by the inward folding of the two sides of the pressure plate (504) is provided with a second fork (5044) coaxially. The first fork (5022) and the second fork (5044) are opposite to each other and are movably engaged on the pin (4). The upright plate (5045) is located on the inner side of the inner wall of the support sleeve (502). The pressure plate (504) has a warped part (5043) at one end and a receiving cavity (5042) at the other end. The bottom of the pressure plate (504) has a conical recess (5041). The center line of the recess (5041) is collinear with the axis of the support sleeve (502). Let C be the intersection of the axis of the receiving cavity (5042) and the bottom surface of the pressure plate (504). Let L2 be the distance from the intersection C to the axis of the support sleeve (502). Then 0.2≤L1:L2≤0.

25.

2. The large-diameter dual-start intelligent fire sprinkler head according to claim 1, characterized in that: The ball seat (501) has a receiving hole (5011) on its lower end face that is adapted to the receiving cavity (5042). The two ends of the glass ball (503) are connected to the receiving hole (5011) and the receiving cavity (5042) respectively. The ball seat (501) has a flange (5013) and a cylindrical section (5012) on its upper end. The lower end face of the flange (5013) abuts against the upper end of the support sleeve (502). The cylindrical section (5012) and the flange (5013) are connected by a tapered surface. The cylindrical section (5012) extends into the countersunk hole (301) at the lower end of the plug (3) and the tapered surface contacts and fits with the edge of the countersunk hole (301).

3. The large-diameter dual-start intelligent fire sprinkler head according to claim 2, characterized in that: The bottom of the frame (102) is screwed with a tapered screw (6), which abuts against the recess (5041), and a sealing gasket (2) is provided between the plug (3) and the outlet of the water inlet channel (101).

4. The large-diameter dual-start intelligent fire sprinkler head according to claim 1, characterized in that: The active triggering mechanism includes a bracket (7) connected to the frame (102), the bracket (7) is used to install a guide sleeve (8), the guide sleeve (8) is equipped with an impact block (9), the front end of the impact block (9) faces the glass ball (503), and an electric initiator (11) is installed on one end of the guide sleeve (8) away from the impact block (9), the electric initiator (11) is electrically connected to the fire alarm detection and control system.

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