CN220801781U - Gas-liquid mixing closed spray head - Google Patents

Abstract

The application relates to a gas-liquid mixing closed spray head, and relates to the field of fire-fighting spray heads. The spray nozzle comprises a spray nozzle body, wherein a nozzle and a plurality of inlet holes are formed in the spray nozzle body, each inlet hole is communicated with the nozzle, a blocking block for blocking the nozzle is arranged on the spray nozzle body, a limiting frame is arranged on the spray nozzle body, glass bubbles are arranged between the limiting frame and the spray nozzle body, one end of each glass bubble abuts against the limiting frame, and the other end of each glass bubble abuts against the blocking block on the nozzle. The application can realize the effect that a plurality of atomizing nozzles on the same pipeline work independently.

Description

Gas-liquid mixing closed spray head

Technical Field

The application relates to the field of fire-fighting spray heads, in particular to a gas-liquid mixing closed spray head.

Background

The atomizing nozzle is one of the nozzles commonly used in the field of fire extinguishment, has good fire extinguishing performance, and can achieve the effect of rapid fire extinguishment in a plurality of special scenes.

The atomizing nozzle comprises a gas-liquid mixed nozzle, a liquid inlet hole and an air inlet hole are formed in the atomizing nozzle, a liquid supply pipe and an air supply pipe are needed to be connected respectively during use, and gas and liquid are mixed in the nozzle and then sprayed out to form water mist for fire fighting and extinguishment. Most of the atomizing spray heads are normally open, and are required to be matched with an electromagnetic valve in series for use, and the opening and closing of the atomizing spray heads are controlled through the electromagnetic valve. Typically, a plurality of atomizing nozzles are connected in series to the liquid supply pipe and the air supply pipe, and an electromagnetic valve is arranged on the liquid supply pipe and the air supply pipe for controlling the respective atomizing nozzles on the pipe to be opened and closed simultaneously.

When different spray heads on the same pipeline need to be applied to different spaces, for example, when the spray heads are applied to battery packs of an energy storage container, at least one spray head needs to be installed in each battery pack, each spray head needs to be controlled to be opened respectively, and once a certain battery pack is on fire, the effect of independently extinguishing the fire of the fire battery pack can be achieved. To realize this function, all set up the solenoid valve at the present needs to correspond every atomizer on trachea and feed liquid pipe for every atomizer all needs to set up two at least solenoid valves, when atomizer's use quantity is many, then need a large amount of solenoid valves that use, be inconvenient for the operator to install it at actual operation condition, influence installation effectiveness, and solenoid valve quantity is too much, also can increase a series of problems such as leakage rate, thereby lead to the problem that the reality is difficult to implement.

Disclosure of utility model

In order to solve the technical problems, the application provides a gas-liquid mixing closed spray head which can realize the effect of being convenient for controlling the independent work of an atomization spray head.

The application provides a gas-liquid mixing closed spray head, which adopts the following technical scheme:

The utility model provides a gas-liquid mixes closed shower nozzle, includes the shower nozzle body, be provided with nozzle and a plurality of inlet opening on the shower nozzle body, each the inlet opening all with nozzle intercommunication, its characterized in that: the spray nozzle comprises a spray nozzle body, and is characterized in that a blocking block for blocking the spray nozzle is arranged on the spray nozzle body, a limiting frame is arranged on the spray nozzle body, glass bubbles are arranged between the limiting frame and the spray nozzle body, one end of each glass bubble is abutted against the limiting frame, and the other end of each glass bubble is abutted against the blocking block on the spray nozzle.

Through adopting above-mentioned technical scheme, different inlet connection air supply pipe and feed liquid pipe, the glass bubble supports the shutoff piece in the nozzle position department of the shower nozzle body, realize the shutoff effect to the nozzle, make this atomizer be in normally closed state, thereby need not to increase in addition the solenoid valve, when the internal fire of battery package leads to the temperature to rise, the glass bubble breaks under high temperature, thereby remove the shutoff effect to the nozzle, under the pressure effect of gas and liquid, the shutoff piece is released, gas and liquid are through the nozzle blowout, form the water smoke, realize the fire extinguishing effect. The blocking block is limited through the glass bubbles, so that the blocking effect of the blocking block to the nozzle is achieved, the glass bubbles are broken at high temperature, the nozzle is opened and sprays water mist, and independent work of each atomizing nozzle is achieved.

Optionally, the shower nozzle body includes nozzle mount and shower nozzle, the inlet set up in on the nozzle mount, the nozzle set up in on the shower nozzle, be provided with in the shower nozzle with the mixing chamber of nozzle intercommunication, just mixing chamber can with each the inlet intercommunication, the shower nozzle can dismantle set up in on the nozzle mount.

By adopting the technical scheme, the gas and the liquid enter the mixing cavity from the corresponding inlet holes to be mixed, and are sprayed out by the nozzle, so that the water mist is more uniform, and the fire extinguishing effect of the atomizing nozzle is improved; in addition, the spray header is detachably connected with the spray head seat, so that the mixing cavity can be conveniently machined on one hand, and an operator can conveniently replace the spray header or the spray head seat on the other hand.

Optionally, the nozzle seat with can dismantle between the shower head and be connected with the connecting body, be provided with one or more first runner and one or more second runner in the connecting body, the inlet is provided with two, is used for admitting air and feed liquor respectively, first runner and the equal one end intercommunication of second runner mix the chamber, first runner other end intercommunication one of them inlet, the second runner other end intercommunication another one the inlet.

Optionally, the first flow channel is provided with one, and the second flow channel is provided with a plurality of flow channels around the first flow channel.

Through adopting above-mentioned technical scheme, the operator can be with the inlet connection air supply pipe of connecting first runner, will connect the inlet connection liquid supply pipe of second runner, the air current that the multi-strand water flow direction first runner jets out to further improve gas-liquid mixing effect. The operator can also connect the inlet hole of connecting first runner with the liquid supply pipe, connect the inlet hole of connecting second runner with the air supply pipe for the rivers that the many air current flow direction first runner jetted out, in order to further improve gas-liquid mixing effect. Through increasing the gas-liquid mixing effect, form finer water smoke, further improve this atomizer's atomization effect, and then improve its fire extinguishing effect.

Optionally, the ends of the second flow channels near the mixing chamber are each inclined towards the first flow channel.

By adopting the technical scheme, the injection direction of each second flow passage is intersected with the injection direction of the first flow passage, so that the rapid gas-liquid mixing is facilitated.

Optionally, the screw hole that opens on the nozzle holder, the screw hole with one of them advance the hole intercommunication, be provided with on the connecting body with the swivel nut of first runner intercommunication, the swivel nut can with screw thread fit, the connecting body orientation the first annular has been seted up to the one end of nozzle holder, each the second runner all with first annular intercommunication, the second annular has been seted up on the nozzle holder, just second annular with another one advance the hole intercommunication, first annular can communicate each other with the second annular.

Through adopting above-mentioned technical scheme, in the threaded connection of swivel nut on the connecting body is in the screw on the nozzle holder, realize dismantling between connecting body and the nozzle holder and be connected, connecting body is connected the back with the nozzle holder, and first runner and one of them inlet intercommunication of nozzle holder, first annular and second annular intercommunication then make each second runner all communicate with another inlet to gas-liquid mixture.

Optionally, the swivel nut is gone up to overlap and is equipped with the sealing washer, just the sealing washer compress tightly in between the connecting body with the shower nozzle seat, the sealing washer covers between first annular with the second annular, set up the intercommunication on the sealing washer first annular with the through-hole of second annular.

Through adopting above-mentioned technical scheme, set up the sealing washer, improve the connection leakproofness between connecting main part and the shower nozzle seat, and then improve the sealed effect of the hookup location between first runner and second runner and the corresponding inlet.

Optionally, the connecting body towards one end of shower head be provided with the seal section of thick bamboo of first flow channel intercommunication, the seal section of thick bamboo with leave the clearance that is used for supplying gas or liquid to pass through between the inner wall of mixing chamber, be provided with on the shutoff piece and be used for inserting the plug block of seal section of thick bamboo.

Through adopting above-mentioned technical scheme, the sealing cylinder peg graft in the sealing cylinder and realize the shutoff effect to first runner, when the shutoff nozzle of shutoff, first runner and second runner cut off each other, reduce because there is pressure differential between air supply pipe and the liquid supply pipe, lead to the condition of gaseous orientation liquid supply pipe, or liquid flow direction air supply pipe.

Optionally, be connected with the annular plate on the spacing, threaded connection has stop nut on the nozzle body, stop nut orientation the one end of spacing is provided with the spacing ring, the spacing ring be used for with the annular plate compress tightly in on the shower nozzle body.

Through adopting above-mentioned technical scheme, the operator compresses tightly the annular plate on the shower nozzle body through the spacing ring on the stop nut and realizes the detachable connection of spacing on the shower nozzle body, makes things convenient for the operator to install and remove or change glass bubble.

Optionally, a wire for conducting electricity is connected to the glass bulb.

Through adopting above-mentioned technical scheme, when the operator detects through other ways or mode that there is the risk of firing in the battery package, the operator can be through being on to the wire for glass bubble is heated and breaks, realizes opening atomizer cooling fire extinguishing's effect.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The glass bubbles limit the blocking blocks, so that the blocking effect of the blocking blocks on the nozzles is achieved, the glass bubbles are broken at high temperature, the nozzles are opened and spray water mist, and independent work of each spray head is achieved;

2. When the nozzle is plugged by the plugging block, the sealing cylinder is sealed by the plugging block, so that the first flow channel and the second flow channel are separated, and when the pressure difference between the air supply pipe and the liquid supply pipe is reduced, the air flows into the liquid supply pipe or the liquid flows into the air supply pipe, thereby influencing the normal use condition of the nozzle;

3. be provided with the wire on the glass bubble, when the operator detects through other detection methods that a certain battery package is unusual, has the risk of firing, the operator is through the input current to the wire for the glass bubble is heated and breaks, realizes the effect that initiative water spray prevented the fire.

Drawings

Fig. 1 is a schematic overall structure of embodiment 1 of the present application.

Fig. 2 is an exploded view of embodiment 1 of the present application for embodying a showerhead and a showerhead.

Fig. 3 is a cross-sectional view of embodiment 1 of the present application for embodying the first flow path and the second flow path.

Fig. 4 is a cross-sectional view of embodiment 2 of the present application for embodying a seal cartridge and an insert.

Fig. 5 is an enlarged schematic view of the position a in fig. 4.

Fig. 6 is a schematic overall structure of embodiment 3 of the present application.

Reference numerals illustrate: 1. a nozzle body; 11. a hole; 12. a nozzle; 13. a wire; 2. blocking; 21. a limiting frame; 22. a glass bulb; 23. a limit groove; 24. a first seal; 25. a first sink; 31. a ring plate; 32. a receiving groove; 33. a limit nut; 34. a limiting ring; 4. a nozzle seat; 41. a spray header; 42. a mixing chamber; 43. a spray header; 44. a first flow passage; 45. a second flow passage; 5. a screw sleeve; 51. a screw hole; 52. a first ring groove; 53. a second ring groove; 54. a seal ring; 55. a second sink; 56. a through hole; 6. a connecting sleeve; 61. a third sink tank; 62. a second seal; 7. a sealing cylinder; 71. inserting blocks; 72. a third seal; 73. a step groove.

Description of the embodiments

The application is described in further detail below with reference to fig. 1-6.

Example 1

The embodiment of the application discloses a gas-liquid mixing closed spray head. As shown in fig. 1 and 2, the gas-liquid mixing closed spray head comprises a spray head body 1, wherein a spray nozzle 12 and a plurality of inlet holes 11 are arranged on the spray head body 1, the inlet holes 11 are used for connecting a gas supply pipeline or a liquid supply pipeline, in the embodiment of the application, two inlet holes 11 are arranged on the spray head body 1, and the two inlet holes 11 are respectively used for connecting a liquid supply pipe and a gas supply pipe. The liquid supply pipe is used for conveying water to the nozzle body 1, and the gas supply pipe is used for conveying gas such as argon, helium, carbon dioxide and the like which can be used for extinguishing fire into the nozzle body 1.

As shown in fig. 2 and 3, the nozzle body 1 is provided with a block 2 at the position of the nozzle 12, and the block 2 is used for blocking the nozzle 12. The shower nozzle body 1 is close to the one end of nozzle 12 and can dismantle and be provided with spacing 21, and shower nozzle body 1 is provided with glass bubble 22 between spacing 21 and sprue 2, is provided with the liquid of thermal expansion in the glass bubble 22, and when the temperature in the position that glass bubble 22 is located risees, leads to the expansion of liquid in the glass bubble 22, can make glass bubble 22 break. The glass bulb 22 is cylindrical, and the glass bulb 22 is supported between the limiting frame 21 and the blocking block 2, so that the glass bulb 22 keeps a state of blocking the nozzle 12. The opposite surfaces of the blocking block 2 and the limiting frame 21 are respectively provided with a limiting groove 23 for limiting the end part of the glass bulb 22.

The shower nozzle body 1 is pegged graft in nozzle 12, and the round first heavy groove 25 has been seted up to the one end that the sprue 2 deviates from glass bubble 22, and the embedded first sealing member 24 that is equipped with of first heavy groove 25, first sealing member 24 can be the sealing ring of rubber material, when sprue 2 compresses tightly in nozzle 12 under the ejector of glass bubble 22, first sealing member 24 on the plug 71 compresses tightly on nozzle 12's inner wall, further seal between sprue 2 and the nozzle 12, reduce the condition that gas-liquid was let out from the gap between sprue 2 and the nozzle 12, be favorable to further improving the sealing effect of sprue 2 to nozzle 12.

The limiting frame 21 can be fixedly connected to the spray head body 1 through a threaded piece, a threaded sleeve can be arranged on the limiting frame 21, and the limiting frame is in threaded connection with the spray head body 1 through the threaded sleeve. In the embodiment of the application, one end of the limiting frame 21 facing the spray head body 1 is fixedly connected with the annular plate 31 through the connecting rod, and the outer ring of the annular plate 31 radially extends out of the orthographic projection of the limiting frame 21 on the annular plate 31. The end of the nozzle body 1, which is close to the nozzle 12, is provided with an annular accommodating groove 32, and the accommodating groove 32 is used for inserting the annular plate 31. One end of the nozzle body 1 close to the nozzle 12 is sleeved with a limit nut 33, and one end of the nozzle body 1 close to the nozzle 12 is provided with threads for being in threaded connection with the limit nut 33. One end of the limiting nut 33 is fixedly connected with a limiting ring 34, the inner diameter of the limiting nut 33 is larger than the outer diameter of the annular plate 31, the inner diameter of the limiting ring 34 is smaller than the outer diameter of the annular plate 31, and the limiting frame 21 and the connecting rod can penetrate through the inner ring of the limiting ring 34.

The operator inserts the annular plate 31 on the spacing 21 in the holding tank 32, then locates spacing 21 and connecting rod with spacing nut 33 cover on, through twisting spacing nut 33 for spacing nut 33 threaded connection is on shower nozzle body 1, and spacing ring 34 compresses tightly annular plate 31 in holding tank 32, realizes the demountable installation of spacing 21 on shower nozzle body 1.

In some embodiments, the spray head body 1 includes a spray head seat 4 and a spray head 41 detachably mounted on the spray head seat 4, wherein a mixing cavity 42 is integrally formed or post-cut and formed at one end of the spray head 41 facing the spray head seat 4, the mixing cavity 42 is communicated with the spray nozzle 12, and when the spray head 41 is mounted on the spray head body 1, two inlet holes 11 on the spray head body 1 are communicated with the mixing cavity 42. The spray header 41 can be connected by a screw member or can be detachably connected by a flange connection mode.

In the embodiment of the application, a connecting main body 43 is arranged between the nozzle seat 4 and the spray header 41, one end of the connecting main body 43 is detachably connected to the nozzle seat 4, and the other end of the connecting main body 43 is detachably connected to the spray header 41.

The connection body 43 and the shower head seat 4 and the shower head 41 may be screwed or flange-connected to realize detachable connection. The connecting main body 43 is internally provided with a first flow channel 44 and a second flow channel 45 in an integral mode or in a later processing mode, one end of the first flow channel 44 and one end of the second flow channel 45 are communicated with the mixing cavity 42 of the spray header 41, one end of the first flow channel 44 away from the spray header 41 is communicated with one inlet hole 11 of the spray header 4, and one end of the second flow channel 45 away from the spray header 41 is communicated with the other inlet hole 11 of the spray header 4. The first flow channel 44 and the second flow channel 45 may each be provided with one or more, and are not arranged in a unique manner.

In the embodiment of the present application, the connecting body 43 is a rotator, a first flow channel 44 in the connecting body 43 is provided, and the first flow channel 44 and the connecting body 43 are coaxially arranged. The second flow passages 45 in the connecting body 43 are provided in a plurality, and the plurality of second flow passages 45 are uniformly arranged around the circumferential direction of the first flow passage 44.

The second flow channels 45 are not unique, and may be disposed obliquely or parallel to the first flow channels 44, and in the embodiment of the present application, the end of each second flow channel 45 near the shower head 41 is inclined toward the direction of the first flow channel 44, so that the flow direction of the second flow channel 45 intersects with the flow direction of the first flow channel 44.

The gas and the liquid are respectively transported in the first flow channel 44 and the second flow channel 45, and the gas may be introduced into the first flow channel 44, the liquid may be introduced into the second flow channel 45, or the gas may be introduced into the first flow channel 44, and the liquid may be introduced into the second flow channel 45. The gas and liquid flow out of the connecting body 43 and mix in the mixing chamber 42, and finally the atomized liquid is sprayed out through the nozzle 12, which is advantageous for improving the fire extinguishing effect of the spray head.

In some embodiments, a screw sleeve 5 is fixedly connected to one end of the connecting body 43 facing the nozzle holder 4, threads of the screw sleeve 5 are disposed on the outer circumferential surface of the screw sleeve 5, and the screw sleeve 5 is disposed coaxially with the first flow channel 44 and communicates with the first flow channel 44. The spray head body 1 is provided with a screw hole 51 which is in threaded fit with the threaded sleeve 5, the screw hole 51 is communicated with one of the inlet holes 11, and when the threaded sleeve 5 is in threaded connection with the screw hole 51, the first flow passage 44 is communicated with the inlet hole 11 corresponding to the screw hole 51.

The first annular groove 52 is integrally formed at the end of the connecting body 43 facing the nozzle seat 4 or is formed at the later stage, each second runner 45 is communicated with the first annular groove 52, the second annular groove 53 is formed at the end of the nozzle seat 4 facing the connecting body 43, and the second annular groove 53 is communicated with the other inlet 11. When the screw sleeve 5 of the connection body 43 is screwed into the screw hole 51, the first ring groove 52 communicates with the second ring groove 53.

A sealing ring 54 is arranged between the connecting body 43 and the nozzle seat 4, and the sealing ring 54 is made of rubber material and has elasticity. The nozzle base 4 is provided with a circle of second sinking groove 55 for accommodating the sealing ring 54 outside the screw hole 51, the second annular groove 53 is positioned on the bottom wall of the second sinking groove 55, and when the sealing ring 54 is placed in the second annular groove 53, the sealing ring 54 shields the notch of the second annular groove 53. When the threaded sleeve 5 of the connecting body 43 is screwed into the screw hole 51 of the nozzle holder 4, the seal ring 54 is blocked between the first ring groove 52 and the second ring groove 53. The sealing ring 54 is provided with a plurality of through holes 56 for communicating the first ring groove 52 and the second ring groove 53, so as to realize the communication between each second flow passage 45 and the corresponding inlet hole 11 of the second ring groove 53.

The shower head 41 is provided with a connection sleeve 6 toward one end of the connection body 43, and the connection sleeve 6 communicates with the mixing chamber 42. The inner wall of the connecting sleeve 6 is provided with threads, the outer wall of the connecting main body 43 facing one end of the spray header 41 is provided with external threads, and the connecting sleeve 6 can be connected to the connecting main body 43 in a threaded manner, so that the spray header 41 can be detachably connected to the connecting main body 43. The connecting sleeve 6 is provided with a circle of third sinking groove 61 near the coaxial center of the mounting seat, and the connecting sleeve 6 is provided with a second sealing element 62 in the corresponding third sinking groove 61, the second sealing element 62 can be an annular sealing ring, and the second sealing element 62 is made of rubber. When the connection sleeve 6 is screwed on the connection body 43, the connection body 43 presses the second sealing member 62 against the connection sleeve 6, so that the connection tightness between the shower head 41 and the connection body 43 is realized.

The implementation principle of the embodiment of the application is as follows: the operator mounts the spray head body 1 in the battery pack, and when the temperature increases due to a fire in the battery pack, the liquid medium in the glass bulb 22 expands by heating, so that the glass bulb 22 breaks. When the glass bubbles 22 are broken, the pushing effect on the blocking block 2 is relieved, the blocking block 2 is ejected out of the nozzle 12 under the pressure action of gas and liquid, the blocking effect on the nozzle 12 is relieved, the gas and the liquid are mixed in the mixing cavity 42 and then ejected out of the nozzle 12 under the pressure action, and fine water mist is formed, so that the fire extinguishing effect on the fire battery pack is achieved.

Traditional mode controls the opening and closing of atomizer through the solenoid valve, or sets up a plurality of solenoid valves on every atomizer, leads to the installation inconvenient, and when atomizer's quantity was many, then be inconvenient for controlling atomizer alone, or a solenoid valve control a plurality of atomizer, leads to atomizer unable independent operation. The atomizing nozzle disclosed by the application is set to be in a normally closed state, can be automatically triggered according to the temperature rise, does not need to be provided with a large number of electromagnetic valves, and reduces the installation difficulty and the operation control difficulty. In addition, each atomizing head can realize independent work, compares in a plurality of atomizer and opens simultaneously and close, is favorable to reducing the wasting of resources more.

Example 2

As shown in fig. 4 and 5, embodiment 2 of the present application is different from embodiment 1 in that: the sealing cylinder 7 is coaxially arranged at one end of the connecting body 43, which faces the spray header 41, a gap for passing the gas and the liquid is reserved between the sealing cylinder 7 and the inner wall of the mixing cavity 42, and the sealing cylinder 7 can be fixedly connected with the connecting body 43, can be in threaded connection with the connecting body 43, and can be fixedly connected to the connecting body 43 in a welding or gluing mode. The seal cylinder 7 is coaxially disposed with the first flow passage 44 of the connection body 43, and the first flow passage 44 communicates with the seal cylinder 7. The plug 71 for inserting the sealing cylinder 7 is fixedly connected with one end of the plug 2 extending into the nozzle 12, and the plug 71 is cylindrical.

One end of the insert block 71 facing the sealing cylinder 7 is provided with a circle of step groove 73, a third sealing piece 72 is sleeved on the insert block 71, and the third sealing piece 72 is positioned in the step groove 73. When the closure block 2 closes off the nozzle 12, the wall of the stepped groove 73 presses the third seal 72 against the end face of the sealing cylinder 7 facing away from the connecting body 43.

In this way, when the blocking block 2 blocks the nozzle 12, the sealing cylinder 7 is sealed through the insertion block 71, and then the first flow channel 44 and the second flow channel 45 are separated, so that when a pressure difference occurs between the air supply pipe and the liquid supply pipe, air flows into the liquid supply pipe or liquid flows into the air supply pipe, and the normal use condition of the nozzle is affected.

Example 3

As shown in fig. 6, embodiment 3 of the present application is different from embodiment 1 in that: be provided with the wire 13 that is used for electrically conducting on the glass bubble 22, when the operator detects through other detection methods that a certain battery package is unusual, has the risk of firing, the operator is through the input current to wire 13 for glass bubble 22 is heated and breaks, realizes the effect that initiatively sprays water to prevent the fire.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (10)

1. The utility model provides a gas-liquid mixes closed shower nozzle, includes shower nozzle body (1), be provided with nozzle (12) and a plurality of inlet opening (11) on shower nozzle body (1), each inlet opening (11) all with nozzle (12) intercommunication, its characterized in that: the novel spray nozzle is characterized in that a blocking block (2) for blocking the spray nozzle (12) is arranged on the spray nozzle body (1), a limiting frame (21) is arranged on the spray nozzle body (1), glass bubbles (22) are arranged between the limiting frame (21) and the spray nozzle body (1), one end of each glass bubble (22) is abutted to the limiting frame (21), and the other end of each glass bubble (22) is abutted to the blocking block (2) on the spray nozzle (12).

2. The gas-liquid mixing closed nozzle according to claim 1, wherein: the shower nozzle body (1) comprises a shower nozzle seat (4) and a shower nozzle (41), the inlet holes (11) are formed in the shower nozzle seat (4), the shower nozzle (12) is arranged on the shower nozzle (41), a mixing cavity (42) communicated with the shower nozzle (12) is formed in the shower nozzle (41), the mixing cavity (42) can be communicated with each inlet hole (11), and the shower nozzle (41) is detachably arranged on the shower nozzle seat (4).

3. The gas-liquid mixing closed nozzle according to claim 2, wherein: the shower nozzle seat (4) with can dismantle between shower head (41) and be connected with connecting body (43), be provided with one or more first runner (44) and one or more second runner (45) in connecting body (43), inlet (11) are provided with two, first runner (44) and second runner (45) homogeneous end intercommunication hybrid chamber (42), first runner (44) other end intercommunication one of them inlet (11), second runner (45) other end intercommunication another one inlet (11).

4. A gas-liquid mixing closed spray head according to claim 3, wherein: the first flow passage (44) is provided with one, and the second flow passage (45) is provided with a plurality of flow passages around the first flow passage (44).

5. The gas-liquid mixing closed nozzle according to claim 4, wherein: one end of the second flow channel (45) close to the mixing cavity (42) is inclined towards the first flow channel (44).

6. The gas-liquid mixing closed nozzle according to claim 4, wherein: screw (51) that open on shower nozzle seat (4), screw (51) and one of them advance hole (11) intercommunication, be provided with on connecting body (43) with swivel nut (5) of first fluid channel (44) intercommunication, swivel nut (5) can with screw (51) screw thread fit, connecting body (43) orientation first annular (52) have been seted up to the one end of shower nozzle seat (4), each second fluid channel (45) all with first annular (52) intercommunication, offer second annular (53) on shower nozzle seat (4), just second annular (53) with another advance hole (11) intercommunication, first annular (52) can communicate with second annular (53) each other.

7. The gas-liquid mixing closed nozzle according to claim 6, wherein: the screw sleeve (5) is sleeved with a sealing ring (54), the sealing ring (54) is tightly pressed between the connecting main body (43) and the spray head seat (4), the sealing ring (54) covers between the first annular groove (52) and the second annular groove (53), and a through hole (56) which is communicated with the first annular groove (52) and the second annular groove (53) is formed in the sealing ring (54).

8. A gas-liquid mixing closed spray head according to claim 3, wherein: one end of the connecting main body (43) facing the spray header (41) is provided with a sealing cylinder (7) communicated with the first flow channel (44), a gap for allowing gas or liquid to pass through is reserved between the sealing cylinder (7) and the inner wall of the mixing cavity (42), and the plugging block (2) is provided with a plugging block (71) for plugging the sealing cylinder (7).

9. The gas-liquid mixing closed nozzle according to claim 1, wherein: the spray nozzle is characterized in that a ring plate (31) is connected to the limiting frame (21), a limiting nut (33) is connected to the spray nozzle body in a threaded mode, a limiting ring (34) is arranged at one end of the limiting frame (21) towards the limiting nut (33), and the limiting ring (34) is used for tightly pressing the ring plate (31) to the spray nozzle body (1).

10. The gas-liquid mixing closed nozzle according to claim 1, wherein: the glass bulb (22) is connected with a conducting wire (13) for conducting electricity.