Concealed sensitive fire sprinkler

Abstract

The present application belongs to the technical field of spray head, and particularly relates to a concealed sensitive fire-fighting spray head, which comprises a spray head body, a joint connected with a water pipe is arranged on the top of the spray head body, connecting pieces are arranged on the two sides of the joint and the spray head body, a water outlet in communication with the joint is arranged on the spray head body, a sealing block for embedding the water outlet is slidably connected to the base, the cross section of the sealing block is in the shape of inverted convex, a support connected with the sealing block is arranged on the connecting piece, one end of the support is rotatably connected with the connecting piece, and the other end of the support extends to the sealing block, the sealing block is stable after rising and cannot be separated from the base to directly fall off, and the sealing block is limited by the connecting rod support, so that the sealing block can be embedded into the water outlet to seal the water outlet, thus, after sealing, others, colleagues or family members can move away the objects prone to water immersion, and there is enough time to inform the property or maintenance personnel to close and maintain, so as to reduce the risk of property loss and avoid serious property loss caused by misoperation.

Description

Technical Field

[0001] This invention discloses a fire sprinkler head, and more particularly relates to a concealed sensitive fire sprinkler head. Background Technology

[0002] Sprinkler heads come in various types and have a wide range of uses. One type, called a fire sprinkler head, is installed on fire pipelines. The fire sprinkler head is the core spraying device of a fire sprinkler system, achieving initial fire control through automatic water spraying. This device consists of a sprinkler, a heat-sensitive glass bulb, and a water pipe plug. The heat-sensitive glass bulb is filled with kerosene or ether solution, and different colors correspond to specific operating temperatures: red corresponds to 68℃, yellow to 79℃, green to 93℃, and blue to 141℃. Red is the most commonly used color in daily life.

[0003] Patent document CN222788369U discloses a multifunctional, environmentally friendly, and safe fire sprinkler head. The sprinkler head body has a spray nozzle, and a heat-sensitive glass tube assembly is mounted on the spray nozzle. A water-blocking seat is located on the outside of the heat-sensitive glass tube assembly on the spray nozzle. A mounting base is fixedly mounted on one side of the water-blocking seat on the sprinkler head body. The mounting base has a through-hole, and a water-blocking plate is movably mounted within the mounting cavity, fixed by a limiting block. When the heat-sensitive glass tube assembly bursts due to high temperature, water sprays out from the spray nozzle in the sprinkler head body. If no fire is detected when the water sprays out, the user can block the spray nozzle with the water-blocking plate to prevent a large outflow of water. This prevents the sprinkler head from spraying excessive water when there is no fire, thereby reducing economic losses and conserving water resources.

[0004] When the aforementioned device bursts due to accident or high temperature, the connecting handle needs to be manually pulled to push the baffle plate to close it. However, this device is installed at a high position, and it is inconvenient to close it by placing it on the top of the sprinkler head body. The operator needs to climb up to reach the sprinkler head to close it, which is inconvenient during operation. If the device is installed at a high position or the indoor ceiling is high, it is inconvenient to close it. Therefore, this application proposes another solution, which is to close the sprinkler head outlet when the thermal glass tube is damaged due to accidental contact or accident and spraying occurs. Summary of the Invention

[0005] The purpose of this invention is to provide a concealed, sensitive fire sprinkler head to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a concealed sensitive fire sprinkler head, comprising a sprinkler head body, a connector for connecting to a water pipe at the top of the sprinkler head body, connecting parts on both sides of the connector and the sprinkler head body, a base at the bottom of the connecting parts, a baffle plate at the lower end of the base, a water outlet communicating with the connector on the sprinkler head body, a plug for sealing the water outlet on the sprinkler head body, a heat-sensitive glass tube between the plug and the base, a sealing block for embedding the water outlet slidably connected on the base, the sealing block having an inverted convex cross-section, a bracket connected to the sealing block on the connecting parts, one end of the bracket being rotatably connected to the connecting parts, and the other end extending to the sealing block, a connecting rod slidably connected inside the bracket, one end of the connecting rod being embedded in the bracket, and the other end being rotatably connected to the sealing block;

[0007] The sealing block includes an upper part and a lower part. The upper part of the sealing block abuts against the bottom of the thermal glass tube and is pushed and embedded into the base by the thermal glass tube. The water outlet is provided with a rotating component that is rotatably connected to the nozzle body. The inner diameter of the rotating component is the same as that of the upper part of the sealing block. The top of the rotating component is provided with a sleeve inside the connector. The side of the sleeve has an opening to accommodate water flow. The connector is provided with a valve plate that is embedded in the sleeve and used to close the opening and fits against the rotating component. The sealing block and the rotating component are provided with a drive assembly for driving the valve plate to move downward.

[0008] Preferably, the valve plate is slidably connected to the connector, and the sleeve is provided with a support block for supporting the valve plate. The valve plate is supported by the support block and misaligned with the opening.

[0009] Preferably, the connector has a slot for accommodating the embedded bracket, a strong magnetic block one is provided in the slot, a strong magnetic block two is provided in the slot and is attracted to the strong magnetic block one, and a torsion spring one is provided between the bracket and the connector to push the bracket to rotate downward and fit into the slot, and the bracket and the connecting rod are symmetrically arranged.

[0010] Preferably, the driving assembly includes a spring between the valve plate and the connector for pushing the valve plate downward. The valve plate is provided with an arc-shaped block that abuts against the support block. The sleeve is provided with a groove that is offset from the support block and accommodates the arc-shaped block. The upper part of the sealing block is provided with a protrusion. The rotating member is provided with a guide groove that accommodates the protrusion. The rotating member pushes the sleeve to rotate along the arc-shaped inner wall of the guide groove through the protrusion. The groove of the driving sleeve is opposite to the arc-shaped block and cancels the support of the valve plate. The nozzle body is provided with a limiting assembly for limiting and fixing the sealing block.

[0011] Preferably, the limiting component includes a limiting block slidably connected to the nozzle body, the limiting block being located at the lower end of the nozzle body's water outlet, the sealing block having a limiting groove for accommodating the embedded limiting block and being opposite to the limiting block, and the nozzle body having a blocking ring at the lower end of the water outlet for limiting the limiting block from blocking the plug and the sealing block, the blocking ring having a through-hole for accommodating the limiting block, the through-hole being offset from the limiting block.

[0012] Preferably, the upper and lower parts of the sealing block are provided with a middle part, and the middle part is provided with a second protrusion for pushing the blocking ring to rotate and driving the through opening to be opposite to the limiting block. The blocking ring is provided with a second guide groove for accommodating the second protrusion. A second spring is provided between the limiting block and the nozzle body to push the limiting block to move.

[0013] Preferably, the rotating component is provided with a sliding groove for accommodating the continuous upward movement of the first protrusion. The sliding groove is connected to the first guide groove. When the first protrusion first enters the first guide groove and then enters the sliding groove, the second protrusion enters the second guide groove. Moreover, the height of the upper part and the rotating component is greater than the height of the middle part and the blocking ring.

[0014] Preferably, the nozzle body is rotatably connected to a pusher at the middle part of the limiting block. The pusher is provided with a plug-in that is embedded in the limiting block. The limiting block is provided with an arc-shaped groove that accommodates the plug-in and pushes the limiting block to move backward and reset. After the limiting block moves and is embedded in the limiting groove, the entrance of the arc-shaped groove is opposite to the plug-in. One end of the pusher extends out of the nozzle body.

[0015] Preferably, the lower diameter of the sealing block is larger than that of the middle part, and the middle part is larger than that of the upper part. After the sealing block is embedded in the water outlet, the lower part will cover the water outlet and the blocking ring. The limiting groove is set in the middle part.

[0016] Preferably, the sealing block has a brightly colored mark on its bottom surface that facilitates alignment and pushing / pressing.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] By installing this device indoors or in offices, in the event of a collision with a tall object, a blow to the heat-sensitive glass tube causing it to break, or a localized fire causing it to break due to increased temperature, and the fire is quickly extinguished (since the main switch for this type of fire hydrant is regional and generally managed by property management or maintenance personnel, and cannot be shut off in ordinary residences), if the fire has already been dealt with or was accidentally damaged, to prevent continuous water spraying and property damage, external objects such as clothes poles, clothes hangers, broom heads, mops, or any other slender items can be used to lift the device and place it against the bottom of the sealing block, then push the sealing block upwards. The block moves upward, causing the rotating connecting rod to move upward and embed itself into the bracket. At the same time, it pushes the bracket to rotate, and the block continues to rise until it embeds itself into the water outlet at the nozzle body. At this time, the connecting rod will slide and extend along the bracket. This setting ensures that the block rises stably and will not separate from the base or fall off. The connecting rod and bracket limit ensure that it can be embedded into the water outlet to seal it. This sealing allows bystanders, colleagues, and family members to move away items that are prone to water ingress, while having enough time to notify property management or maintenance personnel to shut it off and maintain it, reducing the risk of property damage and preventing serious property damage caused by accidental activation. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of a concealed, sensitive fire sprinkler head.

[0020] Figure 2 A schematic diagram of the internal structure of a concealed, sensitive fire sprinkler head;

[0021] Figure 3 for Figure 2 A magnified view of a portion at point A;

[0022] Figure 4 A schematic diagram of the internal structure of a concealed sensitive fire sprinkler head with its sealing block in an upward-moving state;

[0023] Figure 5 This is a schematic diagram of the internal structure of the nozzle body after the sealing block is moved upward;

[0024] Figure 6 This is a partial structural diagram of the sleeve and valve plate;

[0025] Figure 7 A schematic diagram of the exploded structure after the closed block, rotating parts, and blocking ring are engaged and separated.

[0026] Figure 8 A bottom view of the mating point between the pusher and the limit block.

[0027] Reference numerals: 1. Nozzle body; 2. Connector; 3. Connector; 4. Base; 5. Outlet; 6. Sealing block; 7. Bracket; 8. Connecting rod; 9. Upper part; 10. Lower part; 11. Rotating part; 12. Sleeve; 13. Opening; 14. Valve plate; 15. Support block; 16. Slot; 17. Strong magnetic block one; 18. Strong magnetic block two; 19. Torsion spring one; 20. Spring one; 21. Arc-shaped block; 22. Groove; 23. Protrusion one; 24. Guide groove one; 25. Limiting block; 26. Limiting groove; 27. Blocking ring; 28. Through-hole; 29. ​​Middle part; 30. Protrusion two; 31. Guide groove two; 32. Spring two; 33. Slide groove; 34. Pushing part; 35. Insert; 36. Arc-shaped groove. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. In this description, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," 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 the present 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 the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] A concealed, sensitive fire sprinkler head, such as Figures 1-8 As shown, the device includes a sprinkler body 1, a connector 2 at the top of the sprinkler body 1 for connecting to a water pipe, connectors 3 on both sides of the connector 2 and the sprinkler body 1, a base 4 at the bottom of the connector 3, a baffle plate at the bottom of the base 4, a water outlet 5 on the sprinkler body 1 that communicates with the connector 2, a plug on the sprinkler body 1 to seal the water outlet 5, and a heat-sensitive glass tube between the plug and the base 4. When such devices are installed indoors or in office areas, the heat-sensitive glass tube may break when objects are lifted from a height, when children throw things and hit the tube, or when a local fire breaks out and the fire is controlled by a fire extinguisher, even if the sprinkler is still spraying water. In such cases, to protect property from water damage or to prevent further water spraying and soaking of items, the valves on these fire-fighting pipelines are regionally and centrally controlled, making them inaccessible to residents. Residents must move items away and notify management to see if the system can be shut off in time. However, delayed action can lead to additional property damage in homes or offices.

[0030] A sealing block 6 for embedding the water outlet 5 is slidably connected to the base 4. The sealing block 6 has an inverted convex cross-section. A bracket 7 connected to the sealing block 6 is provided on the connector 3. One end of the bracket 7 is rotatably connected to the connector 3, and the other end extends to the sealing block 6. A connecting rod 8 is slidably connected inside the bracket 7. One end of the connecting rod 8 is embedded in the bracket 7, and the other end is rotatably connected to the sealing block 6. The sealing block 6 has a conspicuously colored mark on the bottom surface of the lower part 10 for easy alignment and pushing / pressing. In case of accidental activation or rapid extinguishing of a fire, personnel present should quickly retrieve a long, thin object from the home or surrounding area, such as a clothesline, clothes hanger, broom, mop, or pole, and push it upwards along the bottom surface of the lowest mark 10 on the nozzle base 4 sealing block 6. This ensures precise alignment with the sealing block 6, allowing it to disengage from the heat-sensitive glass tube and the outlet 5 to be blocked by the stopper. As the sealing block 6 moves upwards, the connecting rod 8 rotates upwards along the rotation point. The increased distance between the sealing block 6 and the bracket 7 during upward movement pushes the connecting rod 8 along the sealing block 6 and towards the bracket 7. The internal movement shortens the support 7 and causes it to rotate around the pivot point. Once the support 7 is horizontal and parallel to the base 4, the connecting rod 8 is embedded to the maximum extent in the support 7. Then, the sealing block 6 continues to move upward, and the connecting rod 8 can be pulled out again. The sealing block 6 is embedded in the water outlet 5 to seal the water outlet 5, reducing the amplitude of water spray and the amount of water discharged, thereby reducing the spraying of surrounding items and reducing property damage. Secondly, the action of the connecting rod 8 and the support 7 ensures that the sealing block 6 will not fall off after it is detached from the base 4. A spring can be installed between the support 7 and the connecting rod 8 to ensure the stable movement of the sealing block 6 and to ensure that it can be embedded in the water outlet 5 more accurately.

[0031] The sealing block 6 includes an upper part 9 and a lower part 10. The upper part 9 of the sealing block 6 abuts against the bottom of the thermal glass tube and is pushed by the thermal glass tube to fit into the base 4. The outlet 5 is provided with a rotating part 11 that is rotatably connected to the nozzle body 1. The inner diameter of the rotating part 11 is the same as that of the upper part 9 of the sealing block 6. The top of the rotating part 11 is provided with a sleeve 12 inside the connector 2. The side of the sleeve 12 is provided with an opening 13 to accommodate the water flow. The connector 2 is provided with a valve plate 14 that is embedded in the sleeve 12 and used to close the opening 13 and fits against the rotating part 11. The valve plate 14 is slidably connected to the connector 2. The sleeve 12 is provided with a support block 15 for supporting the valve plate 14. The valve plate 14 is supported by the support block 15 and misaligned with the opening 13. The sealing block 6 and the rotating part 11 are provided with a drive assembly for driving the valve plate 14 to move down. The drive assembly includes a spring 20 between the valve plate 14 and the connector 2 for pushing the valve plate 14 downward. The valve plate 14 has an arc-shaped block 21 that abuts against the support block 15. The sleeve 12 has a groove 22 that is offset from the support block 15 and accommodates the arc-shaped block 21. The upper part 9 of the sealing block 6 has a protrusion 23. The rotating member 11 has a guide groove 24 that accommodates the protrusion 23. The rotating member 11 drives the sleeve 12 to rotate by pushing it along the arc-shaped inner wall of the guide groove via the protrusion 23. The groove 22 of pipe 12 and the arc-shaped block 21 are opposite each other, thus removing the support for valve plate 14. After the sealing block 6 moves upward, the lower part 10 is supported by the item picked up by the operator, while the upper part 9 is first inserted into the outlet 5. At this time, the sealing can be pushed further to make the upper part 9 inserted into the rotating part 11. By continuously pushing the upper part 9, it is inserted into the rotating part 11. The protrusion 23 on the upper part 9 is inserted into the guide groove 24 of the rotating part 11. The guide groove 24 is arc-shaped, and the upper part 9 cannot rotate but can rotate. Part 11 can rotate, so that after the protrusion 23 is inserted, it rises continuously along the arc-shaped inner wall of the guide groove 24, thereby pushing the rotating part 11 to rotate. This causes the rotating part 11 to drive the top sleeve 12 to rotate synchronously, and also drives the support block 15 to be misaligned with the arc-shaped block 21, so that the arc-shaped block 21 is opposite to the groove 22. At this time, after being freed from the support of the support block 15, the valve plate 14 is pushed downward by the spring 20, causing the valve plate 14 to drive the arc-shaped block 21 to move downward, and the arc-shaped block 21 moves downward. The shaped block 21 is embedded in the groove 22, while the valve plate 14 moves down to fit against the opening 13 of the sleeve 12, thereby sealing the opening 13 and fitting the valve plate 14 against the rotating part 11, achieving a sealing effect and preventing water from continuously entering the opening 13. This operation enhances the sealing effect and reduces water outflow. The sealing effect is further enhanced by setting a sealing strip on the edge of the valve plate 14, so that water will not leak and the airtightness is improved, thereby preventing continuous water spraying, which could lead to indoor flooding and wet items, thus avoiding property loss.

[0032] The connector 3 has a slot 16 for accommodating the bracket 7. A strong magnet 17 is located within the slot 16, and a second strong magnet 18 is attracted to the first magnet 17. A torsion spring 19 is located between the bracket 7 and the connector 3 to push the bracket 7 downwards and fit into the slot 16. The bracket 7 and the connecting rod 8 are symmetrically arranged. Under normal conditions, the bracket 7 is embedded in the connector 3 and fits into the slot 16. The first and second strong magnets attract and restrain the bracket 7, and the torsion spring 19 also restrains the bracket 7, ensuring it fits into the slot 16 of the connector 3 and cannot move. This also prevents the connecting rod 8 from rotating. Simultaneously, the connecting rod 8 restrains the sealing block 6. Therefore, during normal use, even during transportation or installation, the upward force of the sealing block 6 can prevent damage to the thermosensitive glass tube. The stability of the sealing block 6 is ensured by the torsion spring 19 and the strong magnets. At the same time, the force applied when the sealing block 6 is pushed upward is greater than the elastic force of the torsion spring 19 and the attraction force of the strong magnet. As a result, the torsion spring 19 will be compressed. Therefore, when the pushing force of the bottom sealing block 6 disappears, the torsion spring 19 will push the bracket 7 to reset. At the same time, the bracket 7 drives the connecting rod 8 to rotate downward and pulls the sealing block 6 to reset, ensuring the overall integrity and subsequent use and maintenance.

[0033] The nozzle body 1 is equipped with a limiting component for restricting and fixing the sealing block 6. The limiting component includes a limiting block 25 slidably connected to the nozzle body 1, located at the lower end of the nozzle body 1's outlet 5. The sealing block 6 has a limiting groove 26 that accommodates the insertion of the limiting block 25 and is opposite to it. At the lower end of the nozzle body 1 near the outlet 5, a blocking ring 27 is provided to restrict the limiting block 25 from blocking the plug and the sealing block 6. The blocking ring 27 has a through-hole 28 that accommodates the limiting block 25, which is offset from the limiting block 25. Due to these features, the sealing block needs continuous support after sealing. If there is insufficient manpower to quickly move items away, or if only one person is available and cannot contact maintenance personnel, the support cannot be maintained continuously. In this case, by continuing to push the sealing block 6 upwards, the upper part 9 of the sealing block 6 continues to move upwards, and the protrusion 23 of the upper part 9 embeds into the sliding groove 33. At this time, the middle part 29 of the sealing block 6 moves upwards simultaneously. This causes the second protrusion 30 to embed into the second guide groove 31 of the blocking ring 27. The second protrusion 30 abuts against the inner wall of the second guide groove 31, pushing the blocking ring 27 to rotate. Simultaneously, the through-hole 28 on the blocking ring 27 rotates, changing its misalignment with the limiting block 25 until it aligns with the limiting block 25 and allows the limiting block 25 to pass through and enter the limiting groove 26 of the middle 29. At this point, the second spring 32 pushes the limiting block 25 into the limiting groove 26, blocking and restricting the closing block 6, preventing it from falling downwards without support. Once fixed, the support for the closing block 6 can be released. The operator can then notify maintenance personnel to arrive as soon as possible, move surrounding items for maintenance, and wait for maintenance personnel to arrive, avoiding property damage. Furthermore, during subsequent repairs and disassembly, residual water in the pipes is prevented from spraying out and damaging surrounding items.

[0034] A middle section 29 is provided between the upper part 9 and the lower part 10 of the sealing block 6. The middle section 29 has a second protrusion 30 for pushing the blocking ring 27 to rotate and causing the through-hole 28 to align with the limiting block 25. The blocking ring 27 has a second guide groove 31 for accommodating the second protrusion 30. A second spring 32 is provided between the limiting block 25 and the nozzle body 1 to push the limiting block 25 to move. Furthermore, the blocking ring 27 is only driven to rotate after the upper part 9 of the sealing block 6 is inserted and continuously moves upward. This avoids the limiting block 25 blocking the sealing block 6, preventing it from moving upward and closing. It also prevents the limiting block 25 from immediately moving out and affecting the water flow when the stopper falls off after the thermal glass tube breaks, thus avoiding inconvenience in subsequent closing. Additionally, when manual closing is not required, it avoids the need for the operator to actively reset the limiting block 25 after it moves. The sealing block 6 only fixes itself when closing, ensuring its convenience and adaptability, and improving its practicality. The rotating component 11 is provided with a groove 33 for accommodating the continuous upward movement of protrusion 23. The groove 33 is connected to the guide groove 24. When protrusion 23 first enters the guide groove 24 and then enters the groove 33, protrusion 30 then enters the guide groove 31. The height of the upper part 9 and the rotating component 11 is greater than the height of the middle part 29 and the blocking ring 27. Furthermore, by having protrusion 23 first enter and drive the rotating component 11 to rotate, protrusion 30 then enters the guide groove 31. This arrangement ensures that when closing, the valve plate 14 is driven to close the outlet 5 first, and the upper part 9 closes the rotating component 11. This shuts off the water flow and ensures that there is no pressure inside the blocking ring 27 before sealing. It also avoids water flow interference, making the seal more reliable. It also avoids the water flow pressure affecting the seal and the adhesion between structures. Therefore, through the above arrangement, the operation after shutting off the water source is safer, more efficient, and more stable. Secondly, protrusion 1 23 first enters guide groove 1 24 and moves to the end of guide groove 1 24 before entering slide groove 33. Then, protrusion 2 30 pushes guide groove 2 31 and blocking ring 27. This design prevents the upper part 9 from continuing to move upward, causing the rotating part 11 to rotate continuously, affecting the sealing and state of valve plate 14. The lower part 10 of sealing block 6 has a larger diameter than the middle part 29, and the middle part 29 is larger than the upper part 9. After sealing block 6 is embedded in outlet 5, the lower part 10 will cover outlet 5 and blocking ring 27. Limiting groove 26 is set on the middle part 29. Finally, after sealing block 6 is embedded in outlet 5, the middle part 29 fits against the rotating part 11 and covers it, while the lower part 10 covers the blocking ring 27, which can seal guide groove 1 24 and guide groove 2 31, thereby reducing the risk of water leakage and improving airtightness.

[0035] The nozzle body 1 is rotatably connected to a pusher 34 at the middle part of the limiting block 25. The pusher 34 is provided with a plug 35 that is embedded in the limiting block 25. The limiting block 25 is provided with an arc-shaped groove 36 that accommodates the insertion of the plug 35 and pushes the limiting block 25 to move back and reset. After the limiting block 25 moves and embeds into the limiting groove 26, the entrance of the arc-shaped groove 36 is opposite to the plug 35. One end of the pusher 34 extends out of the nozzle body 1. After the blocking ring 27 rotates, the limiting block 25 is embedded in the limiting groove 26. At the same time, the limiting block 25 drives the arc-shaped groove 36 to move synchronously to the lower end of the pushing member 34, and the entrance of the arc-shaped groove 36 is opposite to the plug-in 35. Thus, after the items are removed and maintenance personnel need to replace the nozzle, it can be reset. By rotating the pushing member 34, the plug-in 35 is driven to move the limiting block 25 backward along the arc-shaped groove 36 and disengage from the limiting groove 26, and continue to disengage from the through-hole 28. As a result, due to the disappearance of the bottom pushing force, the torsion spring 19 will push the bracket 7 to rotate, and the weight of the sealing block 6 itself will cause the sealing block 6 to drive the middle part 29 of the upper part 9. This causes protrusion 23 to continue moving along the slide groove 33, while protrusion 30 also disengages from guide groove 31, causing the blocking ring 27 to reset and block the limiting block 25. Then, protrusion 23 enters guide groove 24 and pushes the rotating part 11 to reset, causing the support block 15 to push the valve plate 14 upward along the arc surface of the arc block 21 to compress the spring 20 to reset. Subsequently, the sealing block 6 disengages from the outlet 5. Since the limiting block 25 is blocked, the pushing part 34 can slide out along the other end of the arc groove 36, forming a misalignment. If it is recycled and reused, it can also ensure that new plugs and thermal glass tubes can be installed and reused.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A concealed sensitive fire sprinkler head, comprising a sprinkler head body (1), wherein the top of the sprinkler head body (1) is provided with a connector (2) for connecting to a water pipe, and the connector (2) and both sides of the sprinkler head body (1) are provided with connecting parts (3), the bottom of the connecting parts (3) is provided with a base (4), the lower end of the base (4) is provided with a baffle plate, the sprinkler head body (1) is provided with a water outlet (5) communicating with the connector (2), the sprinkler head body (1) is provided with a plug to seal the water outlet (5), and a heat-sensitive glass tube is provided between the plug and the base (4), characterized in that: A sealing block (6) for embedding the water outlet (5) is slidably connected on the base (4). The sealing block (6) has an inverted convex cross section. A bracket (7) connected to the sealing block (6) is provided on the connector (3). One end of the bracket (7) is rotatably connected to the connector (3), and the other end extends to the sealing block (6). A connecting rod (8) is slidably connected inside the bracket (7). One end of the connecting rod (8) is embedded in the bracket (7), and the other end is rotatably connected to the sealing block (6). The sealing block (6) includes an upper part (9) and a lower part (10). The upper part (9) of the sealing block (6) abuts against the bottom of the thermal glass tube and is pushed by the thermal glass tube to fit into the base (4). The outlet (5) is provided with a rotating part (11) that is rotatably connected to the nozzle body (1). The inner diameter of the rotating part (11) is the same as that of the upper part (9) of the sealing block (6). The top of the rotating part (11) is provided with a sleeve (12) inside the connector (2). The side of the sleeve (12) is provided with an opening (13) to accommodate the water flow. The connector (2) is provided with a valve plate (14) that is embedded in the sleeve (12) and used to close the opening (13) and fits with the rotating part (11). The sealing block (6) and the rotating part (11) are provided with a driving component that drives the valve plate (14) to move down.

2. The concealed sensitive fire sprinkler head according to claim 1, characterized in that: The valve plate (14) is slidably connected to the connector (2) and the sleeve (12) is provided with a support block (15) for supporting the valve plate (14). The valve plate (14) is supported by the support block (15) and misaligned with the opening (13).

3. A concealed sensitive fire sprinkler head according to claim 1, characterized in that: The connector (3) is provided with a slot (16) for accommodating the bracket (7) embedded in it. The connector (3) is provided with a strong magnetic block one (17) in the slot (16). The slot (16) is provided with a strong magnetic block two (18) that is attracted to the strong magnetic block one (17). A torsion spring one (19) is provided between the bracket (7) and the connector (3) to push the bracket (7) to rotate downward and fit into the slot (16). The bracket (7) and the connecting rod (8) are symmetrically arranged.

4. A concealed sensitive fire sprinkler head according to claim 2, characterized in that: The drive assembly includes a spring (20) between the valve plate (14) and the connector (2) for pushing the valve plate (14) down. The valve plate (14) is provided with an arc-shaped block (21) that abuts against the support block (15). The sleeve (12) is provided with a groove (22) that is offset from the support block (15) and accommodates the arc-shaped block (21). The upper part (9) of the closing block (6) is provided with a protrusion (23). The rotating part (11) is provided with a guide groove (24) that accommodates the protrusion (23). The rotating part (11) pushes the sleeve (12) to rotate along the arc-shaped inner wall of the guide groove through the protrusion (23). The groove (22) of the driving sleeve (12) and the arc-shaped block (21) are opposite to each other and cancel the support of the valve plate (14). The nozzle body (1) is provided with a limiting assembly for limiting and fixing the closing block (6).

5. A concealed sensitive fire sprinkler head according to claim 4, characterized in that: The limiting component includes a limiting block (25) that is slidably connected to the nozzle body (1). The limiting block (25) is located at the lower end of the nozzle body (1) outlet (5). The sealing block (6) is provided with a limiting groove (26) that accommodates the limiting block (25) and is opposite to the limiting block (25). The nozzle body (1) is provided with a blocking ring (27) at the lower end of the outlet (5) to limit the limiting block (25) from blocking the plug and the sealing block (6). The blocking ring (27) is provided with a through hole (28) that accommodates the limiting block (25) to pass through. The through hole (28) is offset from the limiting block (25).

6. A concealed sensitive fire sprinkler head according to claim 5, characterized in that: The upper part (9) and the lower part (10) of the sealing block (6) are provided with a middle part (29). The middle part (29) is provided with a second protrusion (30) for pushing the blocking ring (27) to rotate and driving the through hole (28) to be opposite to the limiting block (25). The blocking ring (27) is provided with a second guide groove (31) for accommodating the second protrusion (30) to be embedded. The limiting block (25) and the nozzle body (1) are provided with a second spring (32) for pushing the limiting block (25) to move.

7. A concealed sensitive fire sprinkler head according to claim 6, characterized in that: The rotating part (11) is provided with a sliding groove (33) for accommodating the continuous upward movement of the first protrusion (23). The sliding groove (33) is connected to the first guide groove (24). When the first protrusion (23) first enters the first guide groove (24) and then enters the sliding groove (33), the second protrusion (30) then enters the second guide groove (31). The height of the upper part (9) and the rotating part (11) is greater than the height of the middle part (29) and the blocking ring (27).

8. A concealed sensitive fire sprinkler head according to claim 5, characterized in that: The nozzle body (1) is rotatably connected to a pusher (34) at the middle part of the limiting block (25). The pusher (34) is provided with a plug (35) for embedding into the limiting block (25). The limiting block (25) is provided with an arc-shaped groove (36) for accommodating the plug (35) and pushing the limiting block (25) to move back and reset. After the limiting block (25) moves and embeds into the limiting groove (26), the entrance of the arc-shaped groove (36) is opposite to the plug (35). One end of the pusher (34) extends out of the nozzle body (1).

9. A concealed sensitive fire sprinkler head according to claim 5, characterized in that: The lower part (10) of the sealing block (6) has a larger diameter than the middle part (29) and the middle part (29) is larger than the upper part (9). After the sealing block (6) is embedded in the water outlet (5), the lower part (10) will cover the water outlet (5) and cover the blocking ring (27). The limiting groove (26) is set on the middle part (29).

10. A concealed sensitive fire sprinkler head according to claim 1, characterized in that: The closing block (6) has a brightly colored mark on the bottom surface of the lower part (10) that makes it easy to align and push.

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