CN219423634U - High-pressure fine water mist spray head - Google Patents

Abstract

The utility model discloses a high-pressure fine water mist spray head, which comprises a positioning seat, a spray head body and a spray head assembly seat which are sequentially arranged from top to bottom; the center of the positioning seat is provided with a main flow channel; the center of the spray head body is provided with a water injection channel; a plurality of inclined lateral diversion channels are arranged in the spray head assembly seat, and the lateral diversion channels are distributed at intervals around the vertical central line of the spray head assembly seat in a ring-shaped way; a water mist spray head is respectively arranged at the lower end port of each lateral diversion channel; a plurality of blocking mechanisms are vertically arranged in the spray head body, and the lower ends of the blocking mechanisms can penetrate through the top wall of the lateral diversion channel and extend into the lateral diversion channel so as to block the lateral diversion channel; according to the utility model, the blocking mechanism is arranged in the spray head body, and the blocking mechanism is utilized to block or open the diversion channel, so that the water mist spray head is switched on and off, and the purpose of adjustable spraying direction is further realized.

Description

High-pressure fine water mist spray head

Technical Field

The utility model belongs to the technical field of high-pressure water mist spray head equipment, and particularly relates to a high-pressure water mist spray head.

Background

The highway tunnel is used as a relatively closed space, and the life safety of people suffering from the disaster can be seriously affected by high-temperature smoke and some harmful gases generated when the interior of the highway tunnel is in a fire disaster; the high-pressure water mist spray head has the characteristics of high efficiency, energy conservation and wide applicability, and is widely applied to the fields of tunnel fire smoke control, tunnel fire extinguishment, tunnel dust removal and the like; when the high-pressure water mist spray nozzle is opened, a large amount of liquid particles can be sprayed out to cover a range area below the spray nozzle, the environment temperature in the area is reduced, a safe escape space is provided for disaster-stricken personnel, the pressure difference can be caused by the reduction of the temperature in the area environment, the flow direction of smoke can be controlled by utilizing the unbalance of air pressure, and smoke discharge is assisted; meanwhile, the contact area of the granular water mist and the air is large, harmful gas and small-particle-size solid particles generated by combustion can be adsorbed in the case of fire, and the damage of the fire to the respiratory system of people suffering from the fire is reduced.

At present, most of existing high-pressure water mist spray heads are manually added with spray head plugs to control the opening and closing of the water mist spray heads, and the water mist spray range right below the water mist spray heads is directly controlled; however, because the fire disaster has the characteristics of suddenly and urgently, the control mode has good effect when being arranged in a large quantity in the area and realizing the large-scale fire extinguishing and cooling, the cost is higher, the spraying direction cannot be controlled, and the effect of controlling the flowing range of the smoke by deflecting the spraying is difficult to achieve.

Disclosure of Invention

Aiming at the technical problems in the prior art, the utility model provides a high-pressure water mist spray head to solve the technical problems that the existing high-pressure water mist spray head cannot adjust the spraying direction and is difficult to achieve the effect of controlling the flow range of smoke by biased spraying.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a high-pressure fine water mist spray head, which comprises a positioning seat, a spray head body and a spray head assembly seat which are sequentially arranged from top to bottom; the upper end of the positioning seat is connected with a water supply pipe of a tunnel, and a main flow channel is arranged in the center of the positioning seat; a water injection channel is arranged in the center of the spray head body; a plurality of inclined diversion channels are arranged in the spray head assembly seat, and the diversion channels are distributed at intervals around the vertical central line of the spray head assembly seat in a ring-shaped way;

the upper end of the main flow channel is communicated with a water supply pipe of the tunnel, and the lower end of the main flow channel is communicated with the upper end of the water injection channel; the upper ends of the plurality of diversion channels are communicated with the lower end of the water injection channel, and the lower ends of the diversion channels are communicated with the outer side wall of the lower end of the spray head assembly seat; wherein, a fine water mist spray head is respectively arranged at the lower end port of each diversion channel;

a plurality of blocking mechanisms are vertically arranged in the spray head body, are uniformly distributed on the outer circumference of the water injection channel and are arranged in one-to-one correspondence with the diversion channels; the lower end of the blocking mechanism can penetrate through the top wall of the diversion channel and extend into the diversion channel so as to block the diversion channel.

Further, a plurality of mechanism mounting holes are vertically formed in the spray head body, and the mechanism mounting holes are uniformly distributed around the water injection channel and are positioned right above the diversion channel;

the blocking mechanism comprises a telescopic motor, a telescopic rod and a blocking body which are sequentially arranged from top to bottom; the telescopic motor is fixed at the upper end part of the mechanism mounting hole, the upper end of the telescopic rod is connected with the output shaft of the telescopic motor, and the lower end of the telescopic rod is connected with the upper end of the blocking body; the lower end of the blocking body can penetrate through the top wall of the diversion channel and extend into the diversion channel; the periphery of the blocking body is in smooth and tight contact with the side wall of the mechanism mounting hole.

Further, the diversion channel comprises a rectangular section and a circular section which are sequentially communicated from top to bottom; the upper end of the rectangular section is communicated with the lower end of the water injection channel, and the water mist spray head is arranged at the port of the lower end of the circular section;

the vertical section width dimension of the rectangular section is matched with the width dimension of the blocking body, and the vertical section height dimension of the rectangular section is matched with the length dimension of the blocking body; the lower end of the blocking body is of a bevel structure, and a bevel surface of the bevel structure can be in close contact with the bottom surface of the rectangular section.

Further, the blocking mechanism further comprises an inductor; the sensor is positioned on the side wall of the upper end of the spray head body, and the output end of the sensor is connected with the control end of the telescopic motor.

Further, the sensor is one of a signal receiving module, a smoke detecting module and a temperature sensing module.

Further, an included angle between the central line of the diversion channel and the vertical central line of the spray head assembly seat is 45-60 degrees.

Further, the positioning seat is fixed with the nozzle body through bolts, and a waterproof gasket is arranged at the joint of the positioning seat and the nozzle body.

Further, a filter screen is arranged at the inlet end of each water mist spray head.

Further, a vertical diversion channel is further arranged in the spray head assembly seat, and the vertical diversion channel is arranged along the vertical central line of the spray head assembly seat; the upper end of the vertical diversion channel is communicated with the lower end of the water injection channel, and the lower end of the vertical diversion channel is communicated with the center of the end face of the lower end of the spray head assembly seat; wherein, a fine water mist spray head is arranged at the port of the lower end of the vertical diversion channel.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model provides a high-pressure water mist spray head, which is characterized in that a plurality of diversion channels are arranged in a spray head assembly seat, the diversion channels are communicated with a water supply pipe of a tunnel by using a main flow channel and a water injection channel, and the water mist spray head is arranged at the port of the lower end of each diversion channel, so that the requirements of spraying liquid particles in different direction areas are met; through setting up blocking mechanism in the shower nozzle body, utilize blocking mechanism to block or open the water conservancy diversion passageway, realize the switch to the water mist shower nozzle, and then realize the adjustable purpose of spraying direction.

Furthermore, the blocking mechanism adopts a combined structure of a telescopic motor, a telescopic rod and a blocking body, and the telescopic motor is used for driving the telescopic rod to vertically move up and down so as to drive the blocking body to extend into or extend out of the diversion channel, thereby blocking or conducting the diversion channel; simple structure, the motion process is clear and reliable, is convenient for realize automatic purpose of adjusting.

Further, by arranging the inductor and connecting the inductor with the control end of the telescopic motor, the automatic control of the telescopic motor is realized by utilizing the control signal received by the inductor or the collected environmental signal.

Further, the positioning seat and the nozzle body are fixed by bolts, so that the device is convenient to disassemble and maintain.

Drawings

FIG. 1 is a longitudinal sectional view of a high-pressure fine water mist head according to an embodiment;

FIG. 2 is a transverse cross-sectional view of a high pressure fine mist head according to an embodiment;

FIG. 3 is a schematic view of the blocking mechanism in an embodiment;

fig. 4 is a schematic structural view of a waterproof gasket in an embodiment.

The spray head comprises a positioning seat 1, a spray head body 2, a spray head assembly seat 3, a fine water mist spray head 4, a telescopic motor 5, a telescopic rod 6, a blocking body 7, an inductor 8, a waterproof gasket 9 and a filter screen 10; 11 a main flow channel; 21 a water injection channel; 31 diversion channels; 311 rectangular cross-section, 312 circular cross-section.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clear, the following specific embodiments are used for further describing the utility model in detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The utility model provides a high-pressure fine water mist spray head, which comprises a positioning seat 1, a spray head body 2 and a spray head assembly seat which are sequentially arranged from top to bottom; the upper end of the positioning seat 1 is connected with a water supply pipe of a tunnel, the lower end of the positioning seat 1 is fixed with the upper end of the spray head body 2, and the lower end of the spray head body 2 is fixedly connected with the upper end of the spray head assembly seat 3; the positioning seat 1 and the spray head body 2 are fixed by bolts, and a waterproof gasket 9 is arranged at the joint of the positioning seat 1 and the spray head body 2.

In the utility model, a main flow channel 11 is arranged in the center of the positioning seat 1; a water injection channel 21 is arranged in the center of the nozzle body 2; a plurality of inclined lateral diversion channels 31 are arranged in the spray head assembly seat 3, and the plurality of lateral diversion channels 31 are distributed at intervals around the vertical central line of the spray head assembly seat 3 in a circumferential direction; wherein, the upper end of the lateral diversion channel 31 is arranged near one side of the vertical central line of the spray head assembly seat 3, and the lower end of the lateral diversion channel 31 is arranged far away from one side of the vertical central line of the spray head assembly seat 3; preferably, the included angle between the central line of the lateral diversion channel 31 and the vertical central line of the spray head assembling seat 3 is 45-60 degrees.

The upper end of the main flow channel 11 is communicated with a water supply pipe of the tunnel, and the lower end of the main flow channel 11 is communicated with the upper end of the water injection channel 21; the upper ends of the lateral diversion channels 31 are communicated with the lower ends of the water injection channels 21, and the lower ends of the lateral diversion channels 31 are communicated with the outer side walls of the lower ends of the spray head assembly seats 3; wherein, a water mist spray head 4 is respectively installed at the lower end port of each lateral diversion channel 31, and a filter screen 13 is arranged at the inlet end of each water mist spray head 4.

In the utility model, a plurality of blocking mechanisms are vertically arranged in the spray head body 2, and the blocking mechanisms are uniformly distributed on the outer circumference of the water injection channel 21 and are arranged in one-to-one correspondence with the lateral diversion channels 31; the lower end of the blocking mechanism can penetrate through the top wall of the lateral diversion channel 31 and extend into the lateral diversion channel 31 to block the lateral diversion channel 31.

A plurality of mechanism mounting holes are vertically formed in the spray head body 2, are uniformly distributed around the water injection channel 21 and are positioned right above the lateral diversion channel 31; the blocking mechanism comprises a telescopic motor 5, a telescopic rod 6 and a blocking body 7 which are sequentially arranged from top to bottom; the telescopic motor 5 is fixed at the upper end part of the mechanism mounting hole, the upper end of the telescopic rod 6 is connected with the output shaft of the telescopic motor 5, and the lower end of the telescopic rod 6 is connected with the upper end of the blocking body 7; the lower end of the blocking body 7 can penetrate through the top wall of the diversion channel and extend into the lateral diversion channel 31; wherein the periphery of the blocking body 7 is in smooth and tight contact with the side wall of the mechanism mounting hole.

The lateral diversion channel 31 comprises a rectangular section 311 and a circular section 312 which are sequentially communicated from top to bottom; wherein the upper end of the rectangular section 311 is communicated with the lower end of the water injection channel 21, and the water mist head 4 is arranged at the port of the lower end of the circular section 312; the vertical section width dimension of the rectangular section 311 is matched with the width dimension of the blocking body 7, and the vertical section height dimension of the rectangular section 311 is matched with the length dimension of the blocking body 7; the lower end of the blocking body 7 is of a beveling body structure, and a beveling surface of the beveling body structure can be in close contact with the bottom surface of the rectangular section 311; the occlusion mechanism further comprises an inductor 8; the inductor 8 is positioned on the side wall of the upper end of the spray head body 2, and the output end of the inductor 8 is connected with the control end of the telescopic motor 5; preferably, the sensor 8 is one of a signal receiving module, a smoke detecting module and a temperature sensing module.

In the utility model, a vertical diversion channel is also arranged in the spray head assembly seat 3, and the vertical diversion channel is arranged along the vertical central line of the spray head assembly seat 3; the upper end of the vertical diversion channel is communicated with the lower end of the water injection channel 21, and the lower end of the vertical diversion channel is communicated with the center of the end face of the lower end of the spray head assembly seat 3; wherein, a fine water mist spray head 4 is arranged at the port of the lower end of the vertical diversion channel.

According to the high-pressure water mist spray head, the main flow channel and the water injection channel are utilized to communicate the diversion channel with the water supply pipe of the tunnel, and the water mist spray head is arranged at the port of the lower end of each diversion channel, so that the requirements for spraying liquid particles in different direction areas are met; through setting up blocking mechanism in the shower nozzle body, utilize blocking mechanism to block or open the water conservancy diversion passageway, realize the switch to the water mist shower nozzle, and then realize the adjustable purpose of spraying direction.

Examples

As shown in fig. 1-4, the embodiment provides a high-pressure water mist spray head, which comprises a positioning seat 1, a spray head body 2, a spray head assembly seat 3, four water mist spray heads 4 and a waterproof gasket 9; the positioning seat 1, the spray head body 2 and the spray head assembly seat 3 are sequentially connected from top to bottom; specifically, the upper end of the positioning seat 1 is connected with a water supply pipe of a tunnel, the lower end of the positioning seat 1 is fixedly connected with the upper end of the nozzle body 2, and the lower end of the nozzle body 2 is connected with the upper end of the nozzle assembly seat 3; the positioning seat 1 and the spray head body 2 are fixed by bolts, a waterproof gasket 9 is arranged at the joint of the positioning seat 1 and the spray head body 2, and the spray head body 2 and the spray head seat 3 are of an integrated structure.

In this embodiment, a main flow channel 11 is disposed at the center of the positioning seat 1, and a water injection channel 21 is disposed at the center of the nozzle body 2; four inclined lateral diversion channels 31 are arranged in the spray head assembly seat 3, and the four lateral diversion channels 31 are distributed at intervals around the vertical central line of the spray head assembly seat 3 in a ring-shaped way; wherein, the upper end of the lateral diversion channel 31 is arranged near one side of the vertical central line of the spray head assembly seat 3, and the lower end of the lateral diversion channel 31 is arranged far away from one side of the vertical central line of the spray head assembly seat 3; wherein, the included angle between the central line of each lateral diversion channel 31 and the vertical central line of the spray head assembling seat 3 is 45 degrees to 60 degrees.

The upper end of the main flow channel 11 is communicated with a water supply pipe of the tunnel, and the lower end of the main flow channel 11 is communicated with the upper end of the water injection channel 21; the upper ends of the four lateral diversion channels 31 are communicated with the lower end of the water injection channel 21, and the lower ends of the lateral diversion channels 31 are communicated with the outer side wall of the lower end of the spray head assembly seat 3; wherein, a water mist spray head 4 is respectively installed at the lower end port of each lateral diversion channel 31, the inlet end of the water mist spray head 4 is fixed at the lower end port of the lateral diversion channel 31, and the outlet end of the water mist spray head 4 extends to the outer side of the outer side wall of the lower end of the spray head assembling seat 3; the inlet end of each water mist spray head 4 is provided with a filter screen 13, and water flow entering the water mist spray heads 4 is filtered by the filter screen 13 so as to avoid blockage of the water mist spray heads 4 caused by impurities in the water flow.

A vertical diversion channel is further arranged in the spray head assembly seat 3, and the vertical diversion channel is arranged along the vertical central line of the spray head assembly seat 3; the upper end of the vertical diversion channel is communicated with the lower end of the water injection channel 21, and the lower end of the vertical diversion channel is communicated with the center of the end face of the lower end of the spray head assembly seat 3; wherein, a fine water mist spray head 4 is arranged at the port of the lower end of the vertical diversion channel.

In this embodiment, four mechanism mounting holes are vertically disposed in the spray head body 2, and the four mechanism mounting holes are uniformly distributed around the water injection channel 21 and are correspondingly disposed right above the lateral diversion channel 31; a blocking mechanism is vertically arranged in each mechanism mounting hole; the lower end of the blocking mechanism can penetrate through the top wall of the lateral diversion channel 31 and extend into the lateral diversion channel 31 to block the lateral diversion channel 31.

The blocking mechanism comprises a telescopic motor 5, a telescopic rod 6, a blocking body 7 and an inductor 8; the telescopic motor 5 is fixed at the upper end part of the mechanism mounting hole, the upper end of the telescopic rod 6 is connected with the output shaft of the telescopic motor 5, and the lower end of the telescopic rod 6 is connected with the upper end of the blocking body 7; the lower end of the blocking body 7 can penetrate the top of the lateral flow channel 31 and extend into the lateral flow channel 31.

Specifically, the output shaft of the telescopic motor 5 is a rotary column, the rotary column is vertically fixed at the upper end part of the mechanism mounting hole, and a columnar threaded hole is formed in the center of the rotary column; the telescopic rod 6 comprises a threaded rod section, a smooth rod section and a limiting ball which are sequentially arranged from top to bottom; the upper end of the threaded rod section is inserted into the columnar threaded hole in a matched mode, the lower end of the threaded rod section is connected with the upper end of the smooth rod section, and the lower end of the smooth rod section is inserted into the blocking body 7 and fixedly connected with the limiting ball; wherein the limit ball is embedded in the inner center of the blocking body 7; it should be noted that, smooth contact is adopted between the smooth rod section and the contact surface between the limit ball and the blocking body 7; the periphery of the blocking body 7 is in smooth and tight contact with the side wall of the mechanism mounting hole.

The lateral diversion channel 31 comprises a rectangular section 311 and a circular section 312 which are sequentially communicated from top to bottom; wherein the upper end of the rectangular section 311 is communicated with the lower end of the water injection channel 21, and the water mist head 4 is arranged at the port of the lower end of the circular section 312; the vertical section width dimension of the rectangular section 311 is matched with the width dimension of the blocking body 7, and the vertical section height dimension of the rectangular section 311 is matched with the length dimension of the blocking body 7; the lower end of the blocking body 7 is a chamfer structure, and a chamfer surface of the chamfer structure can be in close contact with the bottom surface of the rectangular section 311.

The inductor 8 is positioned on the side wall of the upper end of the spray head body 2, and the output end of the inductor 8 is connected with the control end of the telescopic motor 5; wherein, the sensor 8 is one of a signal receiving module, a smoke detecting module and a temperature sensing module.

Specifically, when the sensor 8 is a signal receiving module, an input end of the sensor 8 is connected with a tunnel control center, and an output end of the sensor 8 is connected with a control end of the telescopic motor 5; the tunnel control center is used for sending a motor switch instruction to the inductor 8, and the inductor 8 is used for sending the received motor switch instruction to the control end of the telescopic motor 5 so as to realize remote control of the high-pressure water mist spray head.

When the sensor 8 is a smoke detection module, the smoke detection module comprises a smoke detection sensor and a motor control module, the smoke detection sensor is used for collecting smoke data in the surrounding environment and sending the collected smoke data to the motor control module, and the motor control module is used for comparing the collected smoke data with a prestored smoke threshold value and outputting and sending a motor switch control instruction to a control end of the telescopic motor 5 according to a comparison result so as to realize automatic control of the high-pressure water mist spray head according to the smoke condition in a tunnel.

When the sensor 8 is a temperature sensing module, the temperature sensing module comprises a temperature sensor and a motor control module, the temperature sensor is used for collecting temperature data in the surrounding environment and sending the collected temperature data to the motor control module, and the motor control module is used for comparing the collected temperature data with a pre-stored temperature threshold value and outputting and sending a motor switch control command to a control end of the telescopic motor 5 according to a comparison result so as to realize automatic control of the high-pressure water mist spray head according to the temperature change condition in a tunnel.

In the embodiment, the top view section of the spray head assembly seat 3 is octagonal, four water mist spray heads are symmetrically arranged at the lower part of the spray head assembly seat in a lateral direction, and one water mist spray head is vertically arranged at the lower part of the spray head assembly seat; the blocking body 7 is made of waterproof rubber; the inductor 8 extends out of the shower nozzle body by 0-3 mm, and the distance between the inductor 8 and the top of the telescopic motor 5 is 5-8 mm; the waterproof gasket 9 is made of waterproof rubber.

Working principle:

in the working of the high-pressure water mist spray head, when a tunnel occurs, a tunnel control center obtains an alarm, and sends a motor switch instruction to an inductor 8 to selectively open partial water mist according to the position of a fire disaster and the condition of the fire disaster; when the spraying direction of the water mist needs to be adjusted, the inductor 8 receives a motor switch instruction, the telescopic motor 5 is controlled to enable the telescopic rod 6 to ascend or descend, and when the blocking body 7 below the telescopic rod 6 blocks the rectangular section 311 of the lateral diversion channel 31, the water mist spray head 4 corresponding to the lateral diversion channel 31 is closed; when the blocking body 7 moves out of the outer side of the rectangular section 311 of the lateral diversion channel 31, the water mist spray head 4 corresponding to the lateral diversion channel 31 is opened; because the included angle between the central line of the diversion channel and the vertical central line of the spray head assembly seat is 45-60 degrees, when the fine water mist spray head 4 is opened, a large amount of liquid particles can be sprayed out to cover a preset area in the range below the spray head, reduce the environmental temperature in the area, adsorb toxic gas in the range and provide a safe escape space for disaster-stricken personnel in the range; in the utility model, the high-pressure water mist is sprayed laterally, the pressure difference can be caused by the reduction of the temperature in the regional environment, and the unbalanced air pressure is utilized to control the flow direction of the smoke so as to assist smoke discharge.

Specifically, the following describes the operation of the blocking mechanism:

the lower end part of the telescopic rod 6 is embedded into the blocking body 7, a limit ball is arranged at the lower end part of the telescopic rod 6, and the part of the telescopic rod 6 embedded into the blocking body 7 is a smooth rod piece; the upper end part of the telescopic rod 6 is a threaded rod section; the output shaft of the telescopic motor 5 is a vertically arranged rotary column, a columnar threaded hole is arranged at the central axis position of the rotary column, and the length of the columnar threaded hole is the same as that of the threaded rod section; when the telescopic motor 5 works, the rotary column rotates to drive the threaded rod section to displace in the vertical direction, the threaded rod section rotates forward and backward through the threaded hole and rotates upwards or downwards, and accordingly the telescopic rod 6 ascends or descends, and the blocking body 7 is driven to ascend or descend.

The high-pressure water mist spray head is characterized in that a positioning seat 1 is connected with a water supply pipe of a tunnel and is arranged at the vault of the tunnel; the lower part of the positioning seat 1 is fixed with the nozzle body 2 through bolts, and a waterproof gasket 9 is arranged at the joint between the lower part and the nozzle body; the spray head assembly seat 3 is positioned at the lower part of the spray head body 2, and four water mist spray heads 4 are laterally installed; a blocking mechanism is embedded in the nozzle body 2; the center of the spray head body 2 is provided with a water injection channel 21 which is communicated with the water mist spray head 4 through a diversion channel; in this embodiment, a fine water mist spray nozzle is further disposed in the center of the lower end of the spray nozzle assembly seat 3, and is communicated with the water injection channel 21 through a vertical diversion channel disposed therein; the upper half section of the lateral diversion channel 31 is a rectangular section, the top wall of the rectangular section is provided with a through opening, and a blocking body in a blocking mechanism enters the diversion channel through the through opening to block the diversion channel, so that water flow is prevented from flowing to the corresponding fine water mist spray head; when the blocking body in the blocking mechanism rises, the diversion channel is opened, and the water flow can flow to the water mist spray head below.

The high-pressure fine water mist spray head is characterized in that a blocking mechanism is embedded in the side wall of an assembly spray head body, a water injection channel is arranged in the spray head body, a spray head assembly seat is arranged at the lower end of the spray head body, and the fine water mist spray head is connected with the assembly seat through a diversion channel; five diversion channels can be arranged at the lower end of the spray head assembly seat, and the five diversion channels comprise a vertical diversion channel and four lateral diversion channels; the vertical diversion channel is a circular channel, and the lowest end of the vertical diversion channel is connected with a fine water mist spray head; the front half section of the lateral diversion channel is a rectangular section pore canal, the top wall of the pore canal is embedded with a blocking body, the blocking body descends to seal the diversion pipe and prevent water flow from flowing to the spray head, the blocking body ascends to open the diversion pipe, and the water flow can flow to the spray head below; the rear half section of the lateral diversion channel is a circular pore canal, and the tail end of the circular pore canal is inserted with a fine water mist spray head; when the device works, high-pressure water flow is injected from the upper part of the spray head body, the water flow downwards flows into each diversion channel through the water injection channel, the water mist spray heads below the vertical diversion channels start to spray out water mist, the lateral water mist spray heads are controlled to be opened and closed by controlling the lifting of the blocking body, the effect of deflection spraying of the water mist can be achieved, and meanwhile, the quantity of the spray heads can be controlled to be opened so as to control the spraying quantity of the water mist.

The above embodiment is only one of the implementation manners capable of implementing the technical solution of the present utility model, and the scope of the claimed utility model is not limited to the embodiment, but also includes any changes, substitutions and other implementation manners easily recognized by those skilled in the art within the technical scope of the present utility model.

Claims (9)

1. The high-pressure water mist spray head is characterized by comprising a positioning seat (1), a spray head body (2) and a spray head assembly seat (3) which are sequentially arranged from top to bottom; the upper end of the positioning seat (1) is connected with a water supply pipe of a tunnel, and a main flow channel (11) is arranged in the center of the positioning seat (1); a water injection channel (21) is arranged in the center of the spray head body (2); a plurality of inclined lateral diversion channels (31) are arranged in the spray head assembly seat (3), and the plurality of lateral diversion channels (31) are circumferentially distributed at intervals around the vertical center line of the spray head assembly seat (3);

the upper end of the main flow channel (11) is communicated with a water supply pipe of the tunnel, and the lower end of the main flow channel (11) is communicated with the upper end of the water injection channel (21); the upper ends of the lateral diversion channels (31) are communicated with the lower ends of the water injection channels (21), and the lower ends of the lateral diversion channels (31) are communicated with the outer side wall of the lower end of the spray head assembly seat (3); wherein, a water mist spray head (4) is respectively arranged at the lower end port of each lateral diversion channel (31);

a plurality of blocking mechanisms are vertically arranged in the spray head body (2), are uniformly distributed on the outer circumference of the water injection channel (21), and are arranged in one-to-one correspondence with the lateral diversion channels (31); the lower end of the blocking mechanism can penetrate through the top wall of the lateral diversion channel (31) and extend into the lateral diversion channel (31) so as to block the lateral diversion channel (31).

2. The high-pressure fine water mist spray head according to claim 1, characterized in that a plurality of mechanism mounting holes are vertically arranged in the spray head body (2), and the mechanism mounting holes are uniformly distributed around the water injection channel (21) and are positioned right above the lateral diversion channel (31);

the blocking mechanism comprises a telescopic motor (5), a telescopic rod (6) and a blocking body (7) which are sequentially arranged from top to bottom; the telescopic motor (5) is fixed at the upper end part of the mechanism mounting hole, the upper end of the telescopic rod (6) is connected with the output shaft of the telescopic motor (5), and the lower end of the telescopic rod (6) is connected with the upper end of the blocking body (7); the lower end of the blocking body (7) can penetrate through the top wall of the diversion channel and extend into the lateral diversion channel (31); wherein the periphery of the blocking body (7) is in smooth and tight contact with the side wall of the mechanism mounting hole.

3. A high pressure fine mist spray head according to claim 2, characterized in that the lateral diversion channel (31) comprises a rectangular section (311) and a circular section (312) which are communicated in sequence from top to bottom; wherein the upper end of the rectangular section (311) is communicated with the lower end of the water injection channel (21), and the water mist spray head (4) is arranged at the port of the lower end of the circular section (312);

the vertical section width dimension of the rectangular section (311) is matched with the width dimension of the blocking body (7), and the vertical section height dimension of the rectangular section (311) is matched with the length dimension of the blocking body (7); the lower end of the blocking body (7) is of a bevel cutting body structure, and a bevel cutting surface of the bevel cutting body structure can be in close contact with the bottom surface of the rectangular section (311).

4. A high pressure fine mist spray head according to claim 2, characterized in that the blocking mechanism further comprises an inductor (8); the sensor (8) is positioned on the side wall of the upper end of the spray head body (2), and the output end of the sensor (8) is connected with the control end of the telescopic motor (5).

5. The high-pressure fine mist spray head according to claim 4, characterized in that the sensor (8) is one of a signal receiving module, a smoke detecting module and a temperature sensing module.

6. A high pressure fine mist spray head according to claim 1, characterized in that the angle between the centre line of the lateral flow guide channel (31) and the vertical centre line of the spray head assembly seat (3) is 45 ° -60 °.

7. The high-pressure fine water mist spray head according to claim 1, wherein the positioning seat (1) and the spray head body (2) are fixed through bolts, and a waterproof gasket (9) is arranged at the joint of the positioning seat (1) and the spray head body (2).

8. A high pressure fine mist spray head according to claim 1, characterized in that a filter screen (13) is provided at the inlet end of each of the fine mist spray heads (4).

9. The high-pressure fine water mist spray head according to claim 1, characterized in that a vertical diversion channel is further arranged at the inner end of the spray head assembly seat (3), and the vertical diversion channel is arranged along the vertical center line of the spray head assembly seat (3); the upper end of the vertical diversion channel is communicated with the lower end of the water injection channel (21), and the lower end of the vertical diversion channel is communicated with the center of the end face of the lower end of the spray head assembly seat (3); wherein a fine water mist spray head (4) is arranged at the port of the lower end of the vertical diversion channel.