A flush nozzle

Abstract

The present invention relates to the technical field of fire sprinklers, and discloses a flush sprinkler, comprising a sprinkler body, a splash plate, a plug, a screw sleeve, and a temperature-sensing trigger mechanism. When a fire occurs, the temperature-sensing trigger mechanism senses the increase in ambient temperature and is triggered to fall from the screw sleeve, and the plug loses its supporting force. Under the action of the water pressure in the through hole, the impact seal, the plug, and the splash plate move downward, and the seal moves downward to open the through hole of the sprinkler body. Firefighting water is sprayed out through the through hole and scattered through the splash plate in the form of uniform water mist for spraying and extinguishing the fire. The splash plate of the present invention is hidden in an installation cavity, so that the sprinkler has good aesthetics. At the same time, the temperature-sensing trigger mechanism is arranged outside the installation cavity and is exposed. It is sensitive to temperature and can react quickly to trigger.

Description

Technical Field

[0001] The invention relates to the technical field of fire sprinkler heads, in particular to a flush sprinkler head. Background Art

[0002] Fire sprinkler heads are used in fire sprinkler systems. When a fire occurs, water is sprayed out through a deflector to extinguish the fire.

[0003] The splash plate of the existing fire sprinkler is a fixed structure exposed outside the sprinkler. Due to the requirements of fire regulations, the installation interval and number of indoor fire sprinklers in a certain area are regulated. After the fire sprinkler with this structure is installed on the indoor roof, the splash plate and the glass bubble structure are obviously visible, which is not well adapted to the house decoration style, and the aesthetics and integrity are poor. Sometimes, in order to achieve the perfect decoration style, the fire sprinkler is retracted into the ceiling of the house, which causes the glass bubble for temperature sensing to be located inside the ceiling, and its temperature sensitivity is poor, and it cannot respond to fire in time. Summary of the invention

[0004] The purpose of the present invention is to provide a flush type sprinkler to solve the problems that the existing fire sprinkler has poor aesthetics and integrity, and the trigger mechanism is located inside the sprinkler, which has poor temperature sensitivity and cannot respond to fire in time.

[0005] In order to solve the above problems, the present invention provides a flush type sprinkler, comprising a sprinkler body, a water splash plate, a plug, a screw sleeve and a temperature sensing trigger mechanism, wherein a through hole is provided in the sprinkler body, the lower end of the sprinkler body has a step, a guide column is slidably penetrated on the step, the lower end of the guide column is connected to the water splash plate, the upper end of the plug is slidably installed at the outlet of the through hole through a sealing member, the lower end of the plug passes through the water splash plate, and has a supporting portion protruding from the lower end surface of the water splash plate, an installation cavity connected to the through hole is provided inside the step, the water splash plate is located in the installation cavity, the temperature sensing trigger mechanism is installed in the installation cavity through the screw sleeve, the temperature sensing portion of the temperature sensing trigger mechanism is located outside the installation cavity, and the supporting portion abuts against the upper end of the temperature sensing trigger mechanism;

[0006] The temperature-sensing trigger mechanism includes a pair of support columns, a pressure plate, a reed and a glass bulb arranged in a mirror image. The upper end of the pressure plate is provided with an opening matching the support portion. The two ends of the pressure plate are respectively movably connected to the upper ends of the two support columns. The two ends of the glass bulb are respectively connected to the middle parts of the two support columns. The two ends of the reed are respectively connected to the lower ends of a pair of support columns. Fins are respectively provided on both sides of the two support columns. The outer periphery of the fins includes an inclined section and an arc section from bottom to top. The inner wall of the screw sleeve is provided with a tapered hole section matching the fin.

[0007] Furthermore, both ends of the pressure plate are symmetrically provided with card slots, and the upper end of each of the support columns is provided with a shoulder that is card-engaged with the card slots.

[0008] Furthermore, a first connection hole is provided in the middle of each of the support columns, the small end of the glass bulb passes through one of the first connection holes, and the large end of the glass bulb abuts against another of the first connection holes.

[0009] Furthermore, a second connection hole is respectively provided at the lower end of each of the support columns, one end of the spring sheet is pressed onto one of the second connection holes by a rivet, and the other end of the spring sheet is provided with a boss portion, and the boss portion is embedded in another of the second connection holes.

[0010] Furthermore, a stepped hole arranged in a flared shape is provided at the outlet of the through hole, and the sealing member is installed in the stepped hole.

[0011] Furthermore, the supporting portion is spherical.

[0012] Furthermore, the outer cover of the body is provided with a protective cover.

[0013] Furthermore, a decorative ring is sleeved on the outer lower end of the body, and a decorative plate is connected to the bottom of the reed.

[0014] Furthermore, the outer diameter of the deflector plate and the length of the pressure plate are both smaller than the minimum inner diameter of the screw sleeve.

[0015] The present invention provides a flush type sprinkler, comprising a sprinkler body, a splash plate, a plug, a screw sleeve and a temperature sensing trigger mechanism. When a fire occurs, the temperature sensing trigger mechanism senses the increase in ambient temperature and is triggered to fall from the screw sleeve, and the plug loses its supporting force. Under the action of the water pressure in the through hole, the impact seal, the plug and the splash plate move downward, and the seal moves downward to open the through hole of the sprinkler body. Fire water is sprayed out through the through hole and scattered through the splash plate in the form of uniform water mist for spraying and extinguishing the fire. The splash plate of the present invention is hidden in the installation cavity, so that the sprinkler has good aesthetics. At the same time, the temperature sensing trigger mechanism is arranged outside the installation cavity and is exposed. It is sensitive to temperature and can react and trigger quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of the flush type nozzle in the embodiment of the present invention.

[0017] Figure 2 Schematic diagram of the internal structure of the flush type nozzle in the embodiment of the present invention.

[0018] Figure 3 Schematic diagram of the structure of the temperature sensing trigger mechanism in the embodiment of the present invention.

[0019] Figure 4Schematic diagram of the structure of the flush type nozzle in the embodiment of the present invention.

[0020] Figure 5 yes Figure 4 AA section diagram in.

[0021] Figure 6 yes Figure 4 Schematic diagram of CC cross-section in .

[0022] In the figure, 1, nozzle body; 2, splash plate; 3, plug; 4, screw sleeve; 5, temperature sensing trigger mechanism; 6, protective cover; 7, decorative ring; 8, decorative plate; 101, through hole; 102, step; 103, guide column; 104, installation cavity; 105, step hole; 501, support column; 502, pressure plate; 503, spring; 504, glass bulb; 505, fin; 5051, inclined section; 5052, arc section; 506, slot; 507, shoulder; 508, first connecting hole; 509, second connecting hole; 510, rivet; 401, tapered hole section; 301, seal; 302, support part. DETAILED DESCRIPTION

[0023] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] In the description of the present invention, it is necessary to understand that the terms "up", "down", "left", "right", "top", "bottom", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] Combination Figures 1 to 6As shown, a flush sprinkler of an embodiment of the present invention is schematically shown, comprising a sprinkler body 1, a water splash plate 2, a plug 3, a screw sleeve 4 and a temperature-sensing trigger mechanism 5. A through hole 101 is provided in the sprinkler body 1, and the inlet end of the through hole 101 is used to connect fire water. The lower end of the sprinkler body 1 has a step 102, and a guide column 103 is slidably penetrated on the step 102. The lower end of the guide column 103 is connected to the water splash plate 2, wherein the guide column 103 can guide the movement of the water splash plate 2 to ensure the stability of the movement of the water splash plate 2. The upper end of the plug 3 is slidably installed at the outlet of the through hole 101 through a sealing member 301. The sealing member 301 is generally a sealing spring pad. The lower end of the plug 3 passes through The splash plate 2 has a support portion 302 protruding from the lower end surface of the splash plate 2. The step 102 is provided with an installation cavity 104 connected to the through hole 101. The splash plate 2 is located in the installation cavity 104. The temperature-sensing trigger mechanism 5 is installed in the installation cavity 104 through the screw sleeve 4. Generally, the installation cavity 104 is provided with an internal thread that cooperates with the screw sleeve 4 to facilitate the installation of the screw sleeve 4. The temperature-sensing portion of the temperature-sensing trigger mechanism 5 is located outside the installation cavity 104, and the support portion 302 abuts against the upper end of the temperature-sensing trigger mechanism 5. When the temperature-sensing trigger mechanism 5 is triggered, under the action of the water pressure of the through hole 101, the impact seal 301 can make the splash plate 2 move downward and then connect the fire water to achieve water spraying and fire extinguishing.

[0026] Specifically, the temperature sensing trigger mechanism 5 includes a pair of support columns 501, a pressure plate 502, a reed 503 and a glass bulb 504 arranged in a mirror image. The upper end of the pressure plate 502 is provided with an opening matching the support portion 302. The two ends of the pressure plate 502 are respectively movably connected to the upper ends of the two support columns 501. The two ends of the glass bulb 504 are respectively connected to the middle parts of the two support columns 501. The two ends of the reed 503 are respectively connected to the lower ends of the two support columns 501. Fins 505 are respectively provided on both sides of each support column 501. The outer periphery of the fin 505 includes an inclined section 5051 and an arc section 5052 from bottom to top. The inner wall of the screw sleeve 4 is provided with a tapered hole section 401 matching the fin 505.Preferably, in order to facilitate the matching of the support portion 302 with the opening so as to effectively block the fire water in the sprinkler when in the installed state, the top of the support portion 302 is set to be spherical. During installation, the glass bulb 504 is installed in the middle of the two support columns 501. The upper parts of the two support columns 501 are movably connected to the card slot 506 of the pressure plate 502. The lower parts of the two support columns 501 are connected by a spring 503. Then the whole is installed in the installation cavity 104 through the screw sleeve 4. When the screw sleeve 4 is screwed upward, the inclined section 5051 on the fin 505 is gradually introduced into the tapered hole section 401 of the screw sleeve 4 and finally Finally, the inner wall of the tapered hole section 401 is brought into contact with the arc section 5052. At this time, the tapered hole section 401 of the screw sleeve 4 applies a pressing force to the arc section 5052 of the fin 505 of the support column 501. In this way, the temperature-sensing trigger mechanism 5 can be stably maintained in the screw sleeve 4. Specifically, the pressing force applied by the screw sleeve 4 to the fin 505 has an upward component due to the action of the tapered hole section 401. This component can act on the support portion 302 of the plug 3 through the transmission of the support column 501 and the pressure plate 502 to push the plug 3 toward the end face of the through hole 101, thereby blocking the through hole 101 to seal the fire water in the through hole 101 therein. At the same time, the compression force applied by the screw sleeve 4 to the fin 505 has a lateral horizontal component. On the one hand, this horizontal component makes the upper ends of the two support columns 501 abut against the slot 506. On the other hand, it is superimposed with the horizontal pulling force generated by the spring 503 on the lower parts of the two support columns 501, which has the effect of making the two support columns 501 move closer to each other and rotate inward. When on fire duty, this horizontal component and the pulling force of the spring 503 are balanced by the supporting force of the glass bulb 504 and the pressure plate 502 to maintain the stability of the temperature sensing trigger mechanism 5. When a fire occurs, the ambient temperature rises, the glass bulb 504 breaks, and the two support columns 50 1 loses its supporting force, the tension generated by the contraction of the spring plate 503 and the horizontal component of force applied by the screw sleeve 4 to the fin 505 cause the two support columns 501 to rotate inwardly around the slot 506 and shrink together. After the two support columns 501 rotate inwardly and shrink together, the temperature-sensing trigger mechanism 5 collapses as a whole and falls off the screw sleeve 4. At this time, the plug 3 loses its supporting force, and under the pressure of the fire water inside the through hole 101, the seal 301 is pushed downward, so that the splash plate 2 drives the guide column 103 to move downward to open the outlet of the through hole 101, and the fire water is sprayed downward onto the splash plate 2, and is atomized and sprayed out by the action of the splash plate 2 to achieve fire extinguishing.

[0027] The water splash plate 2 of the present invention is hidden in the installation cavity 104, so that the nozzle has good aesthetics. At the same time, the temperature sensing trigger mechanism 5 is arranged outside the installation cavity 104 and exposed. It is sensitive to temperature and can react and trigger quickly.

[0028] In this embodiment, the two ends of the pressure plate 502 are symmetrically provided with slots 506, and the upper end of each support column 501 is provided with a shoulder 507 that is engaged with the slot 506. The pressure plate 502 is engaged in the slot 506 through its shoulder 507, thereby realizing a reliable connection with the support column 501. Furthermore, a first connection hole 508 is provided in the middle of each support column 501, and the small end of the glass bulb 504 passes through one of the first connection holes 508, and the large end of the glass bulb 504 abuts against the other first connection hole 508. When the glass bulb 504 is ruptured by heat, the middle of the support column 501 loses its supporting force, so that the temperature-sensing trigger mechanism 5 falls downward, driving the splash plate 2 to move downward. In this embodiment, a second connecting hole 509 is respectively provided at the lower end of each support column 501, and one end of the spring 503 is pressed against one of the second connecting holes 509 by a rivet 510, and a boss portion is provided at the other end of the spring 503, which is embedded in another second connecting hole 509. The boss portion can be easily assembled by providing the spring 503, which can be directly clamped in the second connecting hole 509. The lower end of the support column 501 is connected by the spring 503, and the spring 503 has a certain elastic tensile force. When the glass bulb 504 breaks, the middle part of the support column 501 loses its supporting force. Under the tensile force of the spring 503, the two support columns 501 move inward, so that the fin 505 of the support column 501 is separated from the tapered hole section 401 of the screw sleeve 4, and the temperature sensing trigger mechanism 5 falls down. In this embodiment, the glass bulb 504 cooperates with the spring 503 to further improve the temperature sensitivity.

[0029] Preferably, a step hole 105 arranged in a flared shape is provided at the outlet of the through hole 101, and the seal 301 is installed in the step hole 105. Since the step hole 105 is arranged in a flared shape, when the temperature-sensing trigger mechanism 5 falls down, it can easily drive the seal 301 to move downward along the flared step hole 105 and then open the through hole 101 to realize water spraying fire extinguishing.

[0030] Generally, a protective cover 6 is provided on the outer cover of the main body, and the protective cover 6 protects the guide post 103 to prevent the guide post 103 from being damaged.

[0031] Generally, a decorative ring is sleeved on the outer lower end of the body, and a decorative plate is connected to the bottom of the reed. In this way, when the nozzle is installed, the decorative ring and the decorative plate make the nozzle compatible with the house decoration, and it has both aesthetics and functionality.

[0032] Generally, the outer diameter of the splash plate 2 and the length of the pressure plate 502 are both smaller than the minimum inner diameter of the screw sleeve 4. In this way, when the temperature-sensing trigger mechanism 5 is activated, the temperature-sensing trigger mechanism 5 can quickly and smoothly detach and fall out, allowing the splash plate 2 to quickly slide out of the installation cavity 104 with good sensitivity. Normally, the outer diameter of the splash plate 2 is larger than the diameter of the opening of the through hole 101.

[0033] It should be understood that the present invention uses the terms "first", "second", etc. to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0034] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A flush type nozzle, characterized in that: The nozzle body comprises a nozzle body, a water splash plate, a plug, a screw sleeve and a temperature-sensing trigger mechanism, wherein a through hole is provided in the nozzle body, a step is provided at the lower end of the nozzle body, a guide column is slidably penetrated on the step, the lower end of the guide column is connected with the water splash plate, the upper end of the plug is slidably installed at the outlet of the through hole through a sealing member, the lower end of the plug passes through the water splash plate and has a supporting portion protruding from the lower end surface of the water splash plate, an installation cavity connected with the through hole is provided inside the step, the water splash plate is located in the installation cavity, the temperature-sensing trigger mechanism is installed in the installation cavity through the screw sleeve, the temperature-sensing portion of the temperature-sensing trigger mechanism is located outside the installation cavity, and the supporting portion abuts against the upper end of the temperature-sensing trigger mechanism; The temperature-sensing trigger mechanism comprises a pair of support columns, a pressure plate, a reed and a glass bulb arranged in a mirror image, the upper end of the pressure plate is provided with an opening matching the support portion, the two ends of the pressure plate are respectively movably connected to the upper ends of the two support columns, the two ends of the glass bulb are respectively connected to the middle parts of the two support columns, the two ends of the reed are respectively connected to the lower ends of the two support columns, fins are respectively provided on both sides of the two support columns, the outer periphery of the fins comprises an inclined section and an arc section from bottom to top, and the inner wall of the screw sleeve is provided with a tapered hole section matching the fins; The two ends of the pressure plate are symmetrically provided with card slots, and the upper end of each support column is provided with a shoulder portion that is engaged with the card slot; A first connection hole is provided in the middle of each of the support columns, the small end of the glass bulb passes through one of the first connection holes, and the large end of the glass bulb abuts against another of the first connection holes; A second connection hole is respectively provided at the lower end of each of the support columns, one end of the spring sheet is pressed on one of the second connection holes by a rivet, and the other end of the spring sheet is provided with a boss portion, and the boss portion is embedded in another of the second connection holes; The outer diameter of the deflector plate and the length of the pressure plate are both smaller than the minimum inner diameter of the screw sleeve.

2. The flush nozzle according to claim 1, characterized in that: A stepped hole arranged in a flared shape is provided at the outlet of the through hole, and the sealing member is installed in the stepped hole.

3. The flush type nozzle according to claim 2, characterized in that: The supporting portion is spherical.

4. The flush type spray head according to claim 3, characterized in that: The outer cover of the body is provided with a protective cover.

5. The flush type spray head according to claim 4, characterized in that: The outer lower end of the body is sleeved with a decorative ring, and the bottom of the reed is connected with a decorative plate.

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