Fire-fighting spraying device for clean area of medicine production

Abstract

The application relates to a fire-fighting spraying device for a clean area of medicine production, and belongs to the technical field of fire-fighting spraying systems. The device comprises a spraying head, a mounting ceiling and a cover. A sandwich layer is arranged in the mounting ceiling, the spraying head is arranged in the sandwich layer, the mounting ceiling is provided with a spraying opening, the spraying opening corresponds to a spraying area of the spraying head, the cover is arranged on the spraying opening, paraffin is filled between the cover and the spraying opening, the paraffin seals a gap between the cover and the spraying opening, and the paraffin glues the cover and limits the cover from separating from the spraying opening. The application has the effects of not affecting the sealing performance of the clean area and keeping the spraying capacity.

Description

Technical Field

[0001] This application relates to the field of fire sprinkler systems, and in particular to a fire sprinkler device for a clean area in pharmaceutical production. Background Technology

[0002] "Firefighting" means eliminating hidden dangers and preventing disasters; in a narrow sense, it means extinguishing fires. To better nip fire hazards in the bud, modern buildings are often equipped with automatic sprinkler systems during construction. An automatic sprinkler system consists of sprinkler heads, alarm valve assemblies, water flow alarm devices (water flow indicators or pressure switches), pipes, and water supply facilities. It is an automatic fire extinguishing system that sprays water in the event of a fire. The system's pipes are filled with pressurized water; once a fire is detected, the sprinkler heads activate and immediately spray water.

[0003] Existing automatic sprinkler systems often have sprinkler heads equipped with smoke detectors or temperature detection components. When smoke reaches a certain concentration or temperature, the sprinkler system will automatically start spraying water. Corresponding sprinkler heads also need to be installed in the clean areas of pharmaceutical production facilities to prevent fires.

[0004] Because the aforementioned clean areas for pharmaceutical production need to maintain a clean environment, they are generally in a sealed state. However, after installing the corresponding sprinkler heads, the area installed on the ceiling or the sprinkler heads themselves will affect the airtightness of the clean area. But if the sprinkler head area is wrapped and sealed, it will affect the automatic sprinkler process and fire extinguishing in the event of a fire. Summary of the Invention

[0005] In order to ensure that the sprinkler heads do not affect the airtightness of the clean area while maintaining the spraying capacity, this application provides a fire sprinkler device for a clean area in pharmaceutical production.

[0006] The fire sprinkler system for a clean area in pharmaceutical production provided in this application adopts the following technical solution:

[0007] A fire sprinkler system for a clean area in pharmaceutical production includes a sprinkler head, a mounting ceiling, and a cover. The mounting ceiling has a mezzanine layer, and the sprinkler head is installed within the mezzanine layer. The mounting ceiling has sprinkler nozzles corresponding to the spray areas of the sprinkler head. The cover is installed at the sprinkler nozzle, and paraffin wax is filled between the cover and the sprinkler nozzle. The paraffin wax seals the gap between the cover and the sprinkler nozzle, and also adheres to the cover and prevents it from detaching from the sprinkler nozzle.

[0008] By adopting the above technical solution, a sandwich layer is created within the ceiling to house the sprinkler heads. The ceiling is only left with sprinkler nozzles for spraying water for fire extinguishing, while the rest of the ceiling is kept as sealed as possible. This ensures that the cleanliness of the pharmaceutical production area is not affected by the presence of the fire extinguishing system. A cap is installed on the sprinkler nozzle and secured with paraffin wax to seal it, maintaining the nozzle's seal when not in use and not affecting pharmaceutical production. Furthermore, when a fire occurs in the pharmaceutical production clean area and requires fire extinguishing, the cap can be removed from the ceiling, thus solving both the problem of sealing during normal times and the problem of being unable to spray water after sealing.

[0009] Optionally, the surface within the interlayer for mounting the spray head is designated as a mounting surface, and the mounting surface is provided with a mounting column. The cover is slidably mounted on the mounting column, and an opening and closing structure for the spray head is provided between the mounting column and the cover. The cover moves down and is suspended on the mounting column, and the spray head is activated. The downward movement of the cover forms a spray gap with the ceiling to which the water flow is ejected.

[0010] By adopting the above technical solution, the cover is installed by sliding. On the one hand, this prevents the cover from completely detaching from the ceiling, making it easy to reset the cover and maintain the seal on the sprinkler nozzle. On the other hand, the cover acts as an activation component, and its descent can activate the sprinkler head's spray function. This allows for temperature sensing of the fire through paraffin wax, making the fire detection process more direct, improving the sensitivity of fire detection, and enabling faster action. At the same time, the sprinkler can be manually shut off by moving the cover upwards, allowing for quick operation after the fire is extinguished.

[0011] Optionally, the cover is slidably installed on the ceiling, and the cover moves down to its travel limit to form a spray gap between the cover and the ceiling to which the water is ejected. The side wall of the cover facing the spray head is set as a water guiding surface, and the water guiding surface is an arc surface.

[0012] By adopting the above technical solution, the cover is installed by sliding. On the one hand, this prevents the cover from completely detaching from the ceiling, making it easy to reset the cover and maintain the seal on the sprinkler nozzle. On the other hand, the cover will not fall off completely, and it becomes a dispersing component. Under the impact of water flow, it disperses the water flow through the water guide surface, allowing the water flow to better perform the fire extinguishing effect.

[0013] Optionally, the cover protrudes in a spherical shape on the side away from the ceiling, serving as a force-applying protrusion. The side of the cover facing the ceiling forms a sealing space between the protrusion and the wall of the spray nozzle for the paraffin wax to be filled. The interior of the cover is hollow, serving as a temporary storage cavity. The cover has an inlet / outlet hole at the bottom of the sealing space that communicates with the temporary storage cavity. The bottom of the temporary storage cavity is flush with the inlet / outlet hole. A heating component is installed inside the force-applying protrusion. When the force-applying protrusion is subjected to force, it enters the temporary storage cavity. The bottom of the temporary storage cavity protrudes in the middle and activates the heating component.

[0014] By adopting the above technical solution, the temporary storage cavity inside the cap can recover the molten paraffin wax. The bottom of the temporary storage cavity is flush with the inlet and outlet holes, which allows for better recovery of the paraffin wax. The presence of the force-applying protrusion allows the heating component inside the protrusion to heat the recovered paraffin wax when the cap is moved to the ceiling for reinstallation. Combined with the force-applying protrusion pressing the temporary storage cavity, the paraffin wax inside the temporary storage cavity melts and is squeezed out into the sealed space, thereby realizing the reuse of the recovered paraffin wax. At the same time, after the paraffin wax is squeezed out, it solidifies again in the sealed space to complete the installation of the cap. At this time, the force-applying protrusion is no longer under force, and the temporary storage cavity generates negative pressure. When the paraffin wax melts, it can be drawn back more quickly, completing the recovery process.

[0015] Optionally, a replenishment device is provided inside the interlayer. The replenishment device includes an annular replenishment chamber and a replenishment heating component. The annular replenishment chamber is annular with a central hole serving as a secondary spray hole. The inner diameter of the annular replenishment chamber is consistent with the wall of the spray hole. The annular replenishment chamber is filled with paraffin wax. A replenishment hole for force to flow out is provided at the bottom of the annular replenishment chamber. The portion of the cap forming the sealed space extends into the secondary spray hole. The cap moves upward and activates the replenishment heating component.

[0016] By adopting the above technical solution and setting up a replenishment device, after the cap moves up and resets to the corresponding position, the replenishment heating component heats the paraffin in the annular replenishment chamber for a certain period of time. Then the paraffin flows into the sealing space, completing the reinstallation of the cap and enabling the function of the cap to be quickly reset.

[0017] Optionally, the minimum reinforcement height of the paraffin within the sealed space is lower than the height of the supplementary hole.

[0018] By adopting the above technical solution, a large amount of paraffin wax can be stored in the annular replenishment chamber. The cap can be used multiple times until all the paraffin wax in the annular replenishment chamber is used up. When the cap can no longer be closed, paraffin wax needs to be replenished, and the need for replenishment can be quickly determined.

[0019] Optionally, the maximum diameter of the cover is larger than the aperture of the spray nozzle. The ceiling mounting has an annular protrusion, and the cover has an annular groove. The annular protrusion and the annular groove are fitted together. Paraffin wax is filled between the annular groove and the annular protrusion. The heating body of the supplementary heating component is located inside the annular protrusion, and the paraffin wax in the annular supplementary chamber is in contact with the heating body of the supplementary heating component. The supplementary heating component includes an elastic wave switch, which includes two electrode plates. The two electrode plates contact and activate the heating body of the supplementary heating component. One electrode plate is fixed in the interlayer, and the other electrode plate moves up and down with the cover. When the cover abuts against the ceiling mounting, the two electrode plates are in a disengaged state. When the annular protrusion abuts against the paraffin wax in the annular groove, the two electrode plates are in an electrically connected state.

[0020] By adopting the above technical solution, the cap is larger than the spray nozzle, resulting in a better sealing effect. The matching annular protrusion and groove, along with the gap between the cap and the spray nozzle wall, cause the paraffin wax to bend, further enhancing the sealing effect. The elastic fluctuation switch of the supplementary heating component ensures that the heating body of the supplementary heating component only heats the cap when it is in a certain position. The heating body of the supplementary heating component also heats the annular protrusion, thus ensuring that the cap slides to the required position. During this process, the supplementary heating component undergoes two stages: heating and then de-heating. This process completes the replenishment of paraffin wax, while the paraffin wax in the corresponding annular groove undergoes both melting and solidification. The replenished paraffin wax also merges with the paraffin wax overflowing from the annular groove to form a whole. The entire heating process is controlled by utilizing the melting process of the paraffin wax in the annular groove, which in turn utilizes the supplementary heating component. The design is reasonable, the control is precise, and the process is simple and effective.

[0021] Optionally, the spray head includes a spray head body and a direct-impact plate. The spray head body has a water outlet for water flow. The direct-impact plate is located below the water outlet and is slidably mounted on the spray head body. The direct-impact plate is located in the middle of the water guiding surface, and the side wall of the direct-impact plate facing away from the spray head body is attached to the water guiding surface. The side wall of the direct-impact plate facing the spray head body is an arc surface.

[0022] By adopting the above technical solution, the direct-impact plate is designed so that the water jet from the sprinkler head first strikes the direct-impact plate, reducing the direct impact force on the cover. This makes the connection structure between the cover and the ceiling less susceptible to damage from the water flow, giving the sprinkler head a self-unloading capability. At the same time, it does not rely entirely on the cover's water dispersion capability; the presence of the direct-impact plate allows the sprinkler head itself to have water dispersion capability. Even if the cover is removed when a sealing effect is no longer needed, the sprinkler head can be used independently. Furthermore, when the cover is damaged, the sprinkler head can be installed in other places where sealing requirements are not high and can continue to be used.

[0023] Optionally, when the cover is fixed to the ceiling, the direct-acting plate is partially embedded in the water outlet, and a pressure ring is slidably installed in the water outlet. The direct-acting plate is embedded in the water outlet and drives the pressure ring to move upward. A sponge ring is provided at the top of the inner wall of the water outlet, and the pressure ring moves upward and squeezes the sponge ring.

[0024] By adopting the above technical solution, when the cap is reset, the direct-impact plate also completes the reset process. When the direct-impact plate resets, it pushes the pressure ring, which squeezes the sponge ring, causing the water inside the sponge ring to be squeezed out and placed on the direct-impact plate. When the cap falls again, the water on the direct-impact plate also flows out, accelerating the solidification of the paraffin wax on the cap surface. This makes it less likely for subsequent water flow to wash away the paraffin wax, thus improving the reuse rate of paraffin wax.

[0025] Optionally, the force-applying protrusion is hollow inside.

[0026] By adopting the above technical solution, on the one hand, the weight of the cap is reduced, making it easier to fix the cap; on the other hand, the deformation capacity of the force-applying protrusion itself is improved, making it easier to operate. At the same time, the installation of the internal heating component is more convenient. When the force-applying protrusion squeezes the paraffin out, the bottom of the temporary storage cavity itself can change with the squeezing of the internal space of the force-applying protrusion, improving the change capacity of the temporary storage cavity. When the paraffin is squeezed out, the force is more uniform. When the force-applying protrusion is no longer under force, the negative pressure of the temporary storage cavity can also be controlled, and the suction force is kept stable when the paraffin is recovered.

[0027] In summary, by creating a cavity within the ceiling, the sprinkler heads can be installed within this cavity. The ceiling installation leaves only the sprinkler nozzles as openings for water to be sprayed for fire suppression, while the rest of the ceiling can be kept as sealed as possible. This ensures that the cleanliness of the pharmaceutical production area is not affected by the presence of the fire suppression system. The sprinkler nozzles are covered and secured with paraffin wax, effectively sealing the nozzles. This maintains the seal when not in use for fire suppression, preventing disruption to pharmaceutical production. Furthermore, when a fire occurs in the pharmaceutical production clean area requiring fire suppression, the covers can be detached from the ceiling installation, thus solving both the problem of maintaining a tight seal during normal operation and the problem of being unable to spray water when sealed. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the spray device in the embodiments of this application;

[0029] Figure 2 This is a cross-sectional view of the spraying device in the embodiments of this application;

[0030] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0031] Figure 4 This is a schematic diagram of the structure of the spray head in the embodiments of this application;

[0032] Figure 5 This is a schematic diagram of the structure of the cap in an embodiment of this application.

[0033] Explanation of reference numerals in the attached drawings: 1. Spray head; 11. Spray head body; 111. Water outlet; 112. Sliding groove; 113. Mounting plate; 12. Direct impact plate; 13. Connecting strip; 131. Restricting plate; 14. Pressure ring; 15. Sponge ring; 2. Mounting ceiling; 21. Interlayer; 22. Sealing surface; 23. Mounting surface; 24. Spray nozzle; 25. Ring protrusion; 3. Replenishment device; 31. Annular replenishment chamber; 311. Replenishment hole; 312. Spray auxiliary hole; 3 2. Supplementary heating assembly; 33. Flexible fluctuation switch; 331. Fixed electrode plate; 332. Movable electrode plate; 333. Electrode; 4. Cover; 41. Force-applying protrusion; 42. Water guide surface; 43. Circular groove; 44. Temporary storage cavity; 45. Inlet / outlet hole; 46. Heating assembly; 47. Connecting post; 471. Restricting ring; 48. Guide surface; 5. Sealing space; 6. Paraffin wax; 7. Mounting post; 71. Sliding hole; 72. Restricting cover; 721. Sliding opening. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0035] This application discloses a fire sprinkler system for a clean area in pharmaceutical production.

[0036] A fire sprinkler system for a clean area in pharmaceutical production includes a sprinkler head 1, a mounting ceiling 2, a replenishment device 3, and a cover 4. The mounting ceiling 2 has an internal interlayer 21 for mounting the sprinkler head 1 and the replenishment device 3. The surface of the mounting ceiling 2 that forms the clean area in pharmaceutical production is designated as a sealing surface 22. The surface within the interlayer 21 of the mounting ceiling 2 for mounting the sprinkler head 1 is designated as a mounting surface 23. The mounting surface 23 and the sealing surface 22 face the same direction. The sealing surface 22 has a corresponding spray nozzle 24 corresponding to the position of the sprinkler head 1. The spray nozzle 24 corresponds to the spray area of ​​the sprinkler head 1. The cover 4 is installed at the position of the spray nozzle 24 to seal the spray nozzle 24.

[0037] The cover 4 protrudes in a spherical shape on the side away from the ceiling 2, serving as a force-applying protrusion 41. The cover 4 also protrudes on the side wall facing the spray head 1, serving as a water-guiding surface 42. The water-guiding surface 42 is an arc surface. When the cover 4 is installed on the spray nozzle 24, it is divided into upper and lower parts with the sealing surface 22 as the boundary. The upper part of the cover 4 is embedded in the spray nozzle 24 and forms a sealed space 5 between it and the inner wall of the spray nozzle 24. The lower part of the cover 4 forms an annular stepped surface between the upper and lower parts and abuts against the sealing surface 22. The sealing surface 22 of the ceiling 2 is provided with an annular protrusion 25. The annular protrusion 25 is coaxial with the spray nozzle 24. An annular groove 43 is opened on the stepped surface formed between the lower and upper parts of the cover 4. The annular protrusion 25 is fitted into the annular groove 43. The cross-section of the annular protrusion 25 is semi-circular or slightly curved. In this embodiment, the cross-section of the annular protrusion 25 is preferably semi-circular.

[0038] The upper part of the cover 4, including the junction section, is made of hard metal in a hat shape. The metal portion of the cover 4 maintains a uniform thickness, ensuring that the contact area between the cover 4 and the ceiling 2 is entirely metal and not easily deformed. The force-applying protrusion 41 of the cover 4 is made of soft rubber and is glued to the metal portion of the cover 4, creating a hollow space inside the cover 4 to form a temporary storage cavity 44. The sidewall of the temporary storage cavity 44 formed by the force-applying protrusion 41 is the bottom of the temporary storage cavity 44. The bottom of the temporary storage cavity is flush with the sealing surface 22, meaning that the force-applying protrusion 41 is partially embedded within the temporary storage cavity 44, increasing the force applied. To ensure the firmness of the protrusion 41, the cover 4 has an inlet / outlet hole 45 at the bottom of the sealed space 5, which connects to the temporary storage cavity 44. The bottom of the temporary storage cavity 44 is flush with the inlet / outlet hole 45, that is, the inlet / outlet hole 45 is located on the sealing surface 22. Since the surface of the cover 4 with the inlet / outlet hole 45 is arc-shaped, the sealed space 5 and the inlet / outlet hole 45 are always in communication. The sealed space 5 is filled with paraffin wax 6. At the same time, in order to improve the strength of the connection between the cover 4 and the ceiling 2 through the paraffin wax 6, the surface of the metal part of the cover 4 is pitted and rough, and the hole wall of the spray nozzle 24 is also rough.

[0039] The force-applying protrusion 41 is also hollow inside, making it a hollow rubber package. A heating element 46 is installed inside the force-applying protrusion 41. The heating element 46 inside the force-applying protrusion 41 partially heats the temporary storage cavity 44 formed within the protrusion. The force-applying protrusion 41 is forced into the temporary storage cavity 44, causing the center of the cavity bottom to bulge, creating a state where the center is higher than the sides. Simultaneously, the heating element 46 inside the force-applying protrusion 41 is activated by pressure. The heating body of the heating element 46 can be made of flexible material. The heating strip is attached to the inner wall of the force-applying protrusion 41 for heating, so it is not affected by the deformation of the force-applying protrusion 41. The heating component 46 can be started by pressing the start button of the heating component 46 against the bottom wall of the force-applying protrusion 41. When the force-applying protrusion 41 is pushed upward with force, the heating component 46 can be started. Each time the heating component 46 is started, it only maintains heating for a fixed time, so as to heat the paraffin 6 in the temporary storage cavity 44. After a certain time, the heating stops, and the paraffin 6 can solidify again.

[0040] In another embodiment, the start button of the heating component 46 can also be in the form of air pressure. When the air pressure inside the force-applying protrusion 41 increases to a certain level, the heating component 46 is activated.

[0041] Mounting posts 7 are vertically arranged on the mounting surface 23. In this embodiment, there are three mounting posts 7, which are equally spaced around the spray head 1, that is, equally spaced around the spray nozzle 24. The cover 4 is slidably installed on the mounting posts 7. Specifically, there are three connecting posts 47 vertically arranged on the cover 4, which correspond one-to-one with the three mounting posts 7. The mounting posts 7 have sliding holes 71 for the insertion of the connecting posts 47. The end of the connecting post 47 is provided with a larger diameter limiting ring 471. The end of the mounting post 7 is threaded with a limiting cap 7. 2. The limiting cover 72 has a sliding opening 721 for the connecting column 47 to slide through. The diameter of the limiting ring 471 is larger than the diameter of the sliding opening 721 on the limiting cover 72, so that the connecting column 47 can slide relative to the mounting column 7. The cover 4 moves down to the limit of its stroke and forms a spray gap between it and the mounting ceiling 2 for water to be ejected. The mounting column 7 can be provided with an opening and closing structure for the spray head 1, such as a sensor button, at the bottom of the sliding hole 71. The cover 4 moves down and is suspended on the mounting column 7 and starts the spray of the spray head 1. The sensor button does not start the spray head 1 when it is pressed by the connecting column 47.

[0042] In another embodiment, the sliding hole 71 can be opened in the connecting post 47, the corresponding limiting cover 72 is also installed in the connecting post 47, and the limiting ring 471 is provided in the mounting post 7. The mounting post 7 is slidably installed into the sliding hole 71 in the connecting post 47, and the opening and closing structure of the spray head 1 is provided at the end of the mounting post 7.

[0043] The opening and closing structure of the spray head 1 can also be set separately. After the cover 4 is heated and falls, the individual temperature sensing structure of the spray head 1 will break when it senses the corresponding temperature and start the spraying of the spray head 1. At this time, the starting temperature of the individual temperature sensing structure of the spray head 1 is greater than the melting point of the paraffin wax 6. The cover 4 will fall off first, and then the spraying process will begin. In this embodiment, it is preferable that the spray head 1 is started by the falling of the cover 4.

[0044] The sprinkler head 1 includes a sprinkler head body 11 and a direct-impact plate 12. The sprinkler head body 11 is cylindrical and mounted on the mounting surface 23. The sprinkler head body 11 is connected to a fire water system. A water outlet 111 is provided at the end of the sprinkler head body 11 facing the cover 4. The direct-impact plate 12 is located below the water outlet 111 and is slidably mounted on the sprinkler head body 11. Specifically, a sliding groove 112 is provided on the outer wall of the sprinkler head body 11, making the end of the sprinkler head body 11 facing the cover 4 form a cantilever. Mounting plate 113, direct impact plate 12 is integrally vertically provided with connecting strip 13 on the outer side. The end of connecting strip 13 away from direct impact plate 12 slides through mounting plate 113 and is located in sliding groove 112. The end of connecting strip 13 located in sliding groove 112 is provided with limiting piece 131. The limiting piece 131 restricts the connecting strip 13 from detaching from the spray head body 11. In this embodiment, three sliding grooves 112 are opened at equal angles around the spray head body 11, and three corresponding connecting strips 13 are also provided.

[0045] The direct-impact plate 12 is located in the middle of the water guiding surface 42, and the direct-impact plate 12 is attached to the water guiding surface 42 away from the side wall of the spray head body 11. The side wall of the direct-impact plate 12 facing the spray head body 11 is also curved. When the cover 4 is installed on the spray nozzle 24, the direct-impact plate 12 is attached to the water outlet 111 of the spray head body 11 and partially embedded in the water outlet 111. At the same time, a pressure ring 14 is slidably installed in the water outlet 111. The middle of the pressure ring 14 Water flows out through the hole, the direct impact plate 12 is embedded in the outlet 111 and drives the pressure ring 14 to move upward. A sponge ring 15 is provided on the top of the inner wall of the outlet 111, and a ring groove 43 is opened at the bottom of the outlet 111 for the sponge ring 15 to be embedded, so that water flows out from the hole in the middle of the sponge ring 15. The pressure ring 14 moves upward and squeezes the sponge ring 15, and when the direct impact plate 12 squeezes the pressure ring 14, the direct impact plate 12 has sealed the outlet 111.

[0046] The replenishing device 3 is used to replenish the sealed space 5 with paraffin wax 6. The replenishing device 3 includes an annular replenishing chamber 31 and a replenishing heating component 32. The annular replenishing chamber 31 is annular and the hole in the middle is set as a spray sub-hole 312. The diameter of the spray sub-hole 312 is the same as the diameter of the spray nozzle 24. The annular replenishing chamber 31 is filled with paraffin wax 6. The bottom of the annular replenishing chamber 31 has a replenishing hole 311 for the paraffin wax 6 to flow out after melting. The part of the cap 4 forming the sealed space 5 extends into the spray sub-hole 312. The minimum reinforcement height of the paraffin wax 6 in the sealed space 5 is lower than the height of the replenishing hole 311. The heating body of the replenishing heating component 32 is located inside the annular protrusion 25, and the heating body of the replenishing heating component 32 is in direct contact with the paraffin wax 6 in the annular replenishing chamber 31.

[0047] The cover 4 moves upward and activates the supplementary heating component 32. Specifically, the supplementary heating component 32 includes an elastic wave switch 33, which includes two electrodes 333. The two electrodes 333 contact to supply power to the heating body of the supplementary heating component 32, thus activating the heating body. One electrode 333 is fixed in the interlayer 21, and the other electrode 333 moves up and down with the cover 4. When the cover 4 abuts against the ceiling 2, the two electrodes 333 are in a disengaged state. When the annular protrusion 25 abuts against the paraffin 6 in the annular groove 43, the two electrodes 333 are in an electrically connected state. Specifically, the two electrodes 333 are respectively designated as a fixed electrode 331 and a movable electrode 332. The electrode plate 331 is mounted on the mounting surface 23, and the fixed electrode plate 331 extends towards one of the mounting posts 7. The mounting post 7 facing the fixed electrode plate 331 is installed by sliding into the connecting post 47. The movable electrode plate 332 is fixed to the top of the connecting post 47 and extends towards the fixed electrode plate 331. Two electrodes 333 are provided on the side of the lower side wall of the fixed electrode plate 331 near the mounting post 7. When the annular protrusion 25 just enters the annular groove 43, the side of the movable electrode plate 332 that is extended elastically fluctuates and abuts against the two electrodes on the fixed electrode plate 331 to complete the power supply. When the annular protrusion 25 is fully entered into the annular groove 43, the movable electrode plate 332 passes over the fixed electrode plate 331 and is located between the fixed electrode plate 331 and the mounting surface 23.

[0048] Meanwhile, paraffin wax 6 is also filled between the annular groove 43 and the annular protrusion 25. The annular groove 43 has annular guide surfaces 48 that are inclined towards the annular groove 43 on both sides. The paraffin wax 6 in the annular groove 43 can be integrated with the paraffin wax 6 in the sealed space 5. As the heating body of the supplementary heating component 32 heats up, the paraffin wax 6 in the annular supplementary chamber 31 and the paraffin wax 6 in the annular groove 43 begin to melt. The heating time continues until the paraffin wax 6 in the annular groove 43 is completely melted, and the annular protrusion 25 enters the annular groove 43.

[0049] The implementation principle of a fire sprinkler system in a clean area for pharmaceutical production according to an embodiment of this application is as follows: When there is no fire, the clean area for pharmaceutical production remains sealed. The sprinkler nozzles 24 on the ceiling 2 are sealed by the cover 4 and the paraffin wax 6. When a fire occurs and the temperature rises to the point where the paraffin wax 6 melts, the paraffin wax 6 between the cover 4 and the ceiling 2 melts, the cover 4 falls off, and the sprinkler head 1 starts to spray. The water flows through the cover 4 and sprays to the surrounding area to extinguish the fire.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fire sprinkler system for a clean area in pharmaceutical production, characterized in that: The device includes a shower head (1), a mounting ceiling (2), and a cover (4). The mounting ceiling (2) has a cavity (21) inside, and the shower head (1) is installed in the cavity (21). The mounting ceiling (2) has a shower nozzle (24) corresponding to the spray area of ​​the shower head (1). The cover (4) is installed on the shower nozzle (24). Paraffin wax (6) is filled between the cover (4) and the shower nozzle (24). The paraffin wax (6) seals the gap between the cover (4) and the shower nozzle (24). The paraffin wax (6) glues the cover (4) and prevents the cover (4) from detaching from the shower nozzle (24). The cover (4) protrudes in a spherical shape on the side away from the ceiling (2) and is designated as a force-applying protrusion (41). The cover (4) protrudes on the side facing the ceiling (2) and forms a sealing space (5) between it and the hole wall of the spray nozzle (24) for filling with the paraffin wax (6). The inside of the cover (4) is hollow and designated as a temporary storage cavity (44). The cover (4) has an inlet and outlet hole (45) at the bottom of the sealing space (5) that connects to the temporary storage cavity (44). The bottom of the temporary storage cavity (44) is flush with the inlet and outlet hole (45). A heating component (46) is provided inside the force-applying protrusion (41). The force-applying protrusion (41) is forced into the temporary storage cavity (44). The bottom of the temporary storage cavity (44) protrudes in the middle and activates the heating component (46).

2. The fire sprinkler system for a clean area in pharmaceutical production according to claim 1, characterized in that: The surface inside the interlayer (21) for installing the spray head (1) is designated as the mounting surface (23). The mounting surface (23) is provided with a mounting column (7). The cover (4) is slidably installed on the mounting column (7). The opening and closing structure of the spray head (1) is provided between the mounting column (7) and the cover (4). The cover (4) moves down and hangs on the mounting column (7) and starts the spray of the spray head (1). The cover (4) moves down and forms a spray gap between it and the ceiling (2) for water to flow out.

3. The fire sprinkler system for a clean area in pharmaceutical production according to claim 1, characterized in that: The cover (4) is slidably installed on the ceiling (2). The cover (4) moves down to the limit of its stroke and forms a spray gap between it and the ceiling (2) to supply water. The side wall of the cover (4) facing the spray head (1) is set as a water guiding surface (42), and the water guiding surface (42) is an arc surface.

4. A fire sprinkler system for a clean area in pharmaceutical production according to claim 1, characterized in that: The interlayer (21) is provided with a replenishment device (3), which includes an annular replenishment chamber (31) and a replenishment heating component (32). The annular replenishment chamber (31) is annular and the hole in the middle is a spray sub-hole (312). The inner diameter of the annular replenishment chamber (31) is consistent with the hole wall of the spray port (24). The annular replenishment chamber (31) is filled with paraffin wax (6). The bottom of the annular replenishment chamber (31) is provided with a replenishment hole (311) for force to flow out. The part of the cover (4) forming the sealing space (5) extends into the spray sub-hole (312). The cover (4) moves up and activates the replenishment heating component (32).

5. A fire sprinkler system for a clean area in pharmaceutical production according to claim 4, characterized in that: The minimum reinforcement height of the paraffin (6) in the sealed space (5) is lower than the height of the supplementary hole (311).

6. A fire sprinkler system for a clean area in pharmaceutical production according to claim 5, characterized in that: The maximum diameter of the cover (4) is larger than the aperture of the spray nozzle (24). The ceiling mounting (2) is provided with an annular protrusion (25). The cover (4) has an annular groove (43). The annular protrusion (25) and the annular groove (43) are fitted together. Paraffin wax (6) is filled between the annular groove (43) and the annular protrusion (25). The heating body of the supplementary heating component (32) is located inside the annular protrusion (25), and the paraffin wax (6) in the annular supplementary chamber (31) is in contact with the heating body of the supplementary heating component (32). The supplementary heating component (32) includes an elastically undulating opening. When the switch (33) is closed, the elastic wave switch (33) includes two electrode (333) pieces. The two electrode (333) pieces contact and activate the heating body of the supplementary heating component (32). One electrode (333) piece is fixed in the interlayer (21). The other electrode (333) piece moves up and down with the cover (4). When the cover (4) abuts against the ceiling (2), the two electrode (333) pieces are in a disengaged state. When the annular protrusion (25) abuts against the paraffin (6) in the annular groove (43), the two electrode (333) pieces are in an electrically connected state.

7. A fire sprinkler system for a clean area in pharmaceutical production according to claim 3, characterized in that: The spray head (1) includes a spray head body (11) and a direct-impact plate (12). The spray head body (11) has a water outlet (111) from which water flows out. The direct-impact plate (12) is located below the water outlet (111) and is slidably mounted on the spray head body (11). The direct-impact plate (12) is located in the middle of the water guiding surface (42), and the side wall of the direct-impact plate (12) facing away from the spray head body (11) is attached to the water guiding surface (42). The side wall of the direct-impact plate (12) facing the spray head body (11) is an arc surface.

8. A fire sprinkler system for a clean area in pharmaceutical production according to claim 7, characterized in that: When the cover (4) is installed and fixed on the ceiling (2), the direct impact plate (12) is partially embedded in the water outlet (111), and a pressure ring (14) is slidably installed in the water outlet (111). The direct impact plate (12) is embedded in the water outlet (111) and drives the pressure ring (14) to move upward. A sponge ring (15) is provided on the top of the inner wall of the water outlet (111). The pressure ring (14) moves upward and squeezes the sponge ring (15).

9. A fire sprinkler system for a clean area in pharmaceutical production according to claim 1, characterized in that: The force-applying protrusion (41) is hollow inside.

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