CN218220869U

CN218220869U - Double-layer jet fire-fighting foam foaming and jetting device

Info

Publication number: CN218220869U
Application number: CN202222062309.6U
Authority: CN
Inventors: 李敏; 张明亮; 张红; 柳金梅
Original assignee: Greenman Machinery Co
Current assignee: Greenman Machinery Co
Priority date: 2022-08-05
Filing date: 2022-08-05
Publication date: 2023-01-06
Anticipated expiration: 2032-08-05

Abstract

A double-layer jet fire-fighting foam foaming injection device comprises a shell, wherein a core cylinder is arranged in the shell, two annular convex parts are arranged on the periphery of the core cylinder, and an annular cavity is formed between the two convex parts and the shell; the front end of the core cylinder is penetrated with a spray cylinder, the interior of the core cylinder is provided with a support plate, the inner ring of the support plate is penetrated with a liquid outlet pipe, and the liquid outlet pipe is connected with an L-shaped elbow outside the core cylinder; the front end of the core cylinder is provided with a double-layer jet hole; the top of the shell is provided with a P-shaped handle, the P-shaped handle comprises a transverse pipe with two closed ends, a first vertical pipe and a second vertical pipe, the first vertical pipe and the second vertical pipe are vertically connected with the transverse pipe and are communicated with each other, the second vertical pipe is connected with the Venturi assembly, and the Venturi assembly is connected with the L-shaped elbow and the foam liquid joint; the bottom of the shell is provided with a water inlet base which is connected with a water inlet pipe fitting.

Description

Double-layer jet fire-fighting foam foaming and jetting device

Technical Field

The utility model relates to a fire-fighting equipment, especially a double-deck efflux fire control foam foaming injection apparatus.

Background

After the liquid foam extinguishing agent is mixed with water, the generated fire extinguishing foam can form a foam layer with good tightness on the surface of an object, thereby isolating air, blocking combustion and/or preventing combustion. When a fire disaster occurs, the foam fire-fighting lance is connected with a water source meeting the flow requirement, when water flows through a special passage in the lance body, negative pressure is formed on a bypass, the foam extinguishing agent is sucked and mixed, and finally the foam extinguishing agent is sprayed out from the lance head. Therefore, on one hand, the liquid foam extinguishing agent needs to be fully mixed with water flow and air in the spraying process, so that a good foaming effect is realized; on the other hand, the larger the effective range is, the better the effective range is, so that the efficient fire extinguishing is realized.

The existing foam fire-fighting lance usually adopts a simple three-way structure, is poor in foaming effect, large in kinetic energy loss of water flow, short in jet distance and heavy.

SUMMERY OF THE UTILITY MODEL

Not enough to existing equipment and technique, the utility model aims at providing a double-deck efflux fire control foam foaming injection apparatus, it can improve the foaming effect, promotes the jet distance, improves fire extinguishing efficiency, lightens equipment weight.

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

a double-layer jet fire-fighting foam foaming injection device comprises a cylindrical shell, wherein a cylindrical core barrel is arranged in the shell, two annular convex parts are arranged on the periphery of the core barrel, and a sealing ring is sleeved on the periphery of each convex part, so that a sealed annular cavity is formed among the two convex parts, the outer wall of the core barrel and the inner wall of the shell;

the front end of the core barrel is fixedly provided with a spray barrel communicated with the core barrel, and a plurality of jet holes communicated with the annular chamber and the interior of the core barrel are arranged at the bulge part close to the spray barrel; the rear end of the core cylinder is fixedly connected with the rear end of the shell; a circular support plate is arranged inside the core barrel, and a liquid outlet pipe which is axially parallel to the core barrel is arranged in the middle of the support plate in a penetrating manner;

the top of the shell is provided with an upper mounting surface, the upper mounting surface and the position corresponding to the top of the shell are provided with a first through hole which penetrates through the shell, and the first through hole is communicated with the annular cavity; the P-shaped handle is arranged on the upper mounting surface and comprises a transverse pipe with two closed ends, a first vertical pipe, a second vertical pipe and a transverse plate, wherein the first vertical pipe and the second vertical pipe are vertically connected and communicated with the transverse pipe; the first vertical pipe is close to the front end of the shell, and the second vertical pipe is close to the rear end of the shell; the transverse plate is fixedly connected with the upper mounting surface through a bolt; the first vertical pipe is correspondingly communicated with the first through hole, and the bottom of the second vertical pipe is provided with a Venturi assembly; the venturi assembly comprises a tee joint, the tee joint is provided with a vertically opposite water inlet, a mixed liquid outlet and a transverse foam liquid inlet; the water inlet is connected and communicated with the bottom end of the second vertical pipe; the foam liquid inlet is connected with a foam extinguishing agent connecting pipe;

the liquid outlet pipe penetrates through the core barrel, one end of the liquid outlet pipe is a liquid outlet, the other end of the liquid outlet pipe is connected with an L-shaped elbow positioned outside the core barrel, and the top end of the L-shaped elbow is connected with the mixed liquid outlet; the bottom of the shell is provided with a lower mounting surface, a through second through hole is formed in the position, corresponding to the bottom of the shell, of the lower mounting surface, and the second through hole is communicated with the annular cavity; the lower mounting surface is provided with a water inlet base which is connected with a water inlet pipe fitting.

Further, the jet holes include a first layer jet hole and a second layer jet hole, an included angle between the first layer jet hole and the axis of the cartridge ranges from 20 degrees to 24 degrees, and an included angle between the second layer jet hole and the axis of the cartridge ranges from 14 degrees to 18 degrees.

Further, the inner sectional area of the rear end of the core barrel is larger than or equal to the area of the through hole of the support plate, and the area of the through hole of the support plate is larger than or equal to the inner sectional area of the front end of the core barrel.

Furthermore, the rear end of the spray cylinder penetrates through the inner part of the front end of the core cylinder.

Furthermore, the support plate comprises an outer ring, an inner ring, and connecting ribs between the outer ring and the inner ring, and the liquid outlet pipe is arranged in the inner ring of the support plate in a penetrating manner.

The beneficial effects of the utility model are that:

1. the utility model makes the liquid foam extinguishing agent and water mixed for three times, and the mixture is fully impacted, and the foaming effect is good;

2. the jet holes with two angles of the utility model are arranged in a staggered way, which takes the shooting range and the foaming effect into account;

3. the utility model discloses open air intake, guaranteed that the kinetic energy loss of liquid stream is less;

4. the utility model discloses compact structure, light in weight, be convenient for handheld.

Drawings

Fig. 1 is a schematic structural diagram of the double-layer jet fire-fighting foam foaming and spraying device of the present invention.

Fig. 2 is an enlarged schematic view of the venturi assembly of the double-layer jet fire-fighting foam injection device of the present invention.

Fig. 3 is an exploded schematic view of the double-layer jet fire-fighting foam foaming and spraying device of the present invention.

Fig. 4 is a schematic structural view of the jet hole of the double-layer jet fire-fighting foam foaming and spraying device of the present invention.

Detailed Description

The structure and intended technical effects of the present invention will be described with reference to the following embodiments, which are only used for illustration and not for limiting the scope of the present invention.

As shown in fig. 1, fig. 2 and fig. 3, the utility model provides a double-deck efflux fire control foam injection apparatus, including cylindric shell 1, be equipped with cylindric core section of thick bamboo 2 in this shell 1, 2 peripheries of this core section of thick bamboo are equipped with two annular bellyings 21, and two 21 periphery covers of bellyings are equipped with the sealing washer, make and form sealed cyclic annular cavity 11 between two

bellyings

21, 2 outer walls of this core section of thick bamboos, this shell 1 inner wall.

The front end of the core barrel 2 is provided with the spray barrel 3 communicated with the core barrel 2 in a penetrating way, the bulge part 21 close to the spray barrel 3 is provided with a plurality of jet holes 22 communicated with the annular cavity 11 and the inner part of the core barrel 2, so that water flow can be sprayed out of the annular cavity 11 into the core barrel 2 through the jet holes 22. The rear end of the spray cylinder 3 penetrates into the front end of the core cylinder 2.

The rear end of the core barrel 2 is fixedly connected with the rear end of the shell 1 through a bolt 23. The inside circular shape mounting panel 24 that is equipped with of this core section of thick bamboo 2, this mounting panel 24 middle part is worn to be equipped with the drain pipe 25 of 2 axial parallels of this core section of thick bamboos. The front end of the liquid outlet pipe is a liquid outlet, and the rear end of the liquid outlet pipe is communicated with an L-shaped elbow 26 positioned outside the core barrel 2. Specifically, as shown in fig. 3, the holder plate 24 includes an outer ring 241, an inner ring 242, and a connecting rib 243, and the liquid outlet pipe 25 is inserted into the inner ring 242. Particularly, this core section of thick bamboo 2 is the variable cross section inner chamber, and the interior sectional area more than or equal to this mounting panel 24's of its rear end through-hole area, the interior sectional area of this mounting panel 24's through-hole area more than or equal to this core section of thick bamboo 2 front end to it is unobstructed to guarantee the air inlet, and is beneficial to the increase range.

The top of the housing 1 is provided with an upper mounting surface 12, the upper mounting surface 12 and a position corresponding to the top of the housing 1 are provided with a first through hole 121, and the first through hole 121 is communicated with the annular chamber 11. The upper mounting surface 12 is used for mounting a P-shaped handle 4, and the P-shaped handle 4 comprises a cross pipe 40 with two closed ends, a first vertical pipe 41 which is vertically connected and communicated with the cross pipe 40 and is close to the front end of the shell 1, and a second vertical pipe 42 which is close to the rear end of the shell 1. A transverse plate 43 is arranged between the bottoms of the first vertical pipe 41 and the second vertical pipe 42, and the transverse plate 43 is fixedly connected to the upper mounting surface 12 through bolts. The first vertical pipe 41 is correspondingly communicated with the first through hole 121, and the bottom of the second vertical pipe 42 is connected and communicated with the venturi assembly 5. The venturi assembly 5 includes a tee 50 having vertically opposed water inlet 51, mixed liquor outlet 52 and transverse foam concentrate inlet 53, the venturi assembly 5 being in communication with the secondary standpipe 42 through the water inlet 51, with the L-bend 26 through the mixed liquor outlet 52, and with the foam concentrate connecting tube through the foam concentrate inlet 53.

The bottom of the housing 1 is provided with a lower mounting surface 13, the lower mounting surface 13 and a corresponding position of the bottom of the housing 1 are provided with a second through hole 131, and the second through hole 131 is communicated with the annular chamber 11. The lower mounting surface 13 is provided with a water inlet base 6, and the water inlet base 6 is connected with a water inlet pipe fitting 7.

The utility model discloses a use as follows: the water inlet pipe fitting 7 is connected with a water source water pipe, and the foam liquid inlet 53 is connected with the liquid foam extinguishing agent through a foam extinguishing agent connecting pipe. Water flows through the water pipe and the water inlet base 6 to enter the annular cavity 11 and then enters the P-shaped handle 4, when the water flows through the Venturi assembly 5 through the second vertical pipe 42, bypass negative pressure is formed at the position of the tee joint 50 to suck the liquid foam extinguishing agent, the first mixing is realized at the position of the Venturi assembly 5, and the mixed liquid is sprayed out from the liquid outlet. The core cylinder 2 is provided with a jet hole 22, the main water flow is sprayed out from the annular chamber 11 through the jet hole 22, and is mixed with the mixed liquid generated by the first mixing again, and finally is sprayed out from the spray cylinder 3. As shown in fig. 4, the jet hole 22 is at an angle with respect to the first mixed liquid (horizontal direction), and the larger the angle (20 ° to 24 °), the better the foaming effect (i.e. first foaming) is; the smaller the angle (14 to 18) the more advantageous it is to achieve a longer shot (i.e. the second foaming). In order to obtain a good balance between the shooting range and the foaming effect, two or more than two kinds of jet holes can be arranged in a mixed and inserted manner, that is, the jet hole 22 comprises a first layer jet hole 221 and a second layer jet hole 222, the angle of an included angle α between the first layer jet hole 221 and the axis of the cartridge 2 is 20 ° to 24 °, and the angle of an included angle β between the second layer jet hole 222 and the axis of the cartridge 2 is 14 ° to 18 °.

The utility model has the advantages as follows:

1, the utility model discloses a rifle body inside special channel design realizes that the cubic of liquid foam extinguishing agent and water mixes, makes to mix more abundant, realizes good foaming effect. By utilizing the Venturi effect, negative pressure is formed when water flows pass through the bypass to suck the liquid foam extinguishing agent into the passage, so that the first mixing is realized; the mixed liquid formed by the first mixing collides with the water flow sprayed out from the first layer of jet holes to realize the second mixing (namely, the first foaming), and then collides with the water flow sprayed out from the second layer of jet holes to realize the third mixing (namely, the second foaming), and finally is sprayed out from the spray cylinder of the gun head;

and 2, mixing the water flow sprayed out of the large-angle jet hole for the second time. The large-angle jet hole has the significance that the mixed flow is more fully impacted and mixed so as to ensure good foaming effect;

and 3, mixing the water flow sprayed out of the small-angle jet hole for the third time. The small-angle jet hole has the significance of ensuring that the kinetic energy loss of liquid flow is small so as to ensure the range of the liquid flow.

4, the utility model realizes the flow distribution by utilizing the external P-shaped hollow handle, ensures the complete opening of the air inlet and reduces the kinetic energy loss caused by vacuum suction;

5, the utility model discloses utilize hollow P shape handle to realize the reposition of redundant personnel, saved parts such as pipeline, joint, alleviateed weight.

The invention is defined by the claims. Based on the above, it will be apparent to those skilled in the art that various changes and modifications can be made, which are within the main spirit and scope of the present invention.

Claims

1. A double-layer jet fire-fighting foam foaming injection device is characterized by comprising a cylindrical shell, wherein a cylindrical core barrel is arranged in the shell, two annular convex parts are arranged on the periphery of the core barrel, and a sealing ring is sleeved on the periphery of each convex part, so that a sealed annular cavity is formed among the two convex parts, the outer wall of the core barrel and the inner wall of the shell;

the top of the shell is provided with an upper mounting surface, the upper mounting surface and the position corresponding to the top of the shell are provided with a first through hole which penetrates through the shell, and the first through hole is communicated with the annular cavity; the P-shaped handle is arranged on the upper mounting surface and comprises a transverse pipe with two closed ends, a first vertical pipe, a second vertical pipe and a transverse plate, wherein the first vertical pipe and the second vertical pipe are vertically connected and communicated with the transverse pipe; the first vertical pipe is close to the front end of the shell, and the second vertical pipe is close to the rear end of the shell; the transverse plate is fixedly connected with the upper mounting surface through a bolt; the first vertical pipe is correspondingly communicated with the first through hole, and the bottom of the second vertical pipe is provided with a Venturi assembly; the venturi assembly includes a tee having vertically opposed water inlets, a mixed liquor outlet, and a transverse foam concentrate inlet; the water inlet is connected and communicated with the bottom end of the second vertical pipe; the inlet of the foam liquid is connected with a foam extinguishing agent connecting pipe;

the liquid outlet pipe penetrates through the core barrel, one end of the liquid outlet pipe is a liquid outlet, the other end of the liquid outlet pipe is connected with an L-shaped elbow positioned outside the core barrel, and the top end of the L-shaped elbow is connected with the mixed liquid outlet; a lower mounting surface is arranged at the bottom of the shell, a through second through hole is formed in the position, corresponding to the bottom of the shell, of the lower mounting surface, and the second through hole is communicated with the annular cavity; the lower mounting surface is provided with a water inlet base which is connected with a water inlet pipe fitting.

2. The dual-layer jet fire-fighting foam foaming and spraying device of claim 1, characterized in that: the jet holes comprise a first layer of jet holes and a second layer of jet holes, the included angle between the first layer of jet holes and the axis of the core barrel is 20-24 degrees, and the included angle between the second layer of jet holes and the axis of the core barrel is 14-18 degrees.

3. The double-layer jet fire-fighting foam foaming and spraying device of claim 1, characterized in that: the inner sectional area of the rear end of the core barrel is larger than or equal to the area of the through hole of the support plate, and the area of the through hole of the support plate is larger than or equal to the inner sectional area of the front end of the core barrel.

4. The dual-layer jet fire-fighting foam foaming and spraying device of claim 1, 2 or 3, characterized in that: the support plate comprises an outer ring, an inner ring and a plurality of connecting ribs between the outer ring and the inner ring, and the liquid outlet pipe penetrates through the inner ring.