CN212338466U

CN212338466U - Gas-liquid two-phase flow water spray gun connecting hose

Info

Publication number: CN212338466U
Application number: CN202022018812.2U
Authority: CN
Inventors: 陈慧敏; 王立新; 陈小英; 戴建良; 孙勇
Original assignee: Shaoxing Shenggao Emergency Equipment Co Ltd; Ningbo High Tech Fluid Control Technology Co Ltd
Current assignee: Shaoxing Shenggao Emergency Equipment Co Ltd; Ningbo High Tech Fluid Control Technology Co Ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-01-12
Anticipated expiration: 2030-09-15

Abstract

The application discloses gas-liquid two-phase flow water smoke rifle coupling hose, including body and the coupling of being connected with the body, the body includes: the sealing joint is connected with the pipe joint, and the first conveying pipe and the second conveying pipe are nested with each other; the first conveying pipe is positioned on the inner side and is hollow inside to form a first fluid channel; the second delivery pipe is positioned at the outer side, and a radial gap between the first delivery pipe and the second delivery pipe forms a second fluid channel; the sealing joint is provided with a first through hole communicated with the first fluid channel and a second through hole communicated with the second fluid channel, and the pipe joint is provided with a first outlet communicated with the first through hole and a second outlet communicated with the second through hole; one of the first through hole and the second through hole is arranged along the axial direction of the pipe body, and the other one is arranged along the radial direction of the pipe body. The gas-liquid two-phase flow water spray gun connecting hose has the advantages of low manufacturing cost and convenience in storage and transportation, and has high popularization value.

Description

Gas-liquid two-phase flow water spray gun connecting hose

Technical Field

The application relates to the field of fire fighting equipment, in particular to a gas-liquid two-phase flow water mist gun connecting hose.

Background

With the improvement of fire protection requirements, the high-efficiency fire extinguishing effect of a water mist fire extinguishing technology formed by gas-liquid two-phase flow is paid attention to by people, and corresponding equipment and products become the key points of technical research.

The gas-liquid two-phase flow water mist gun is widely used in backpack type water mist guns, cart type water mist guns and vehicle type water mist guns, particularly cart type water mist guns and vehicle type water mist guns, the used hose is long, wherein the length of the cart type hose is generally 10 meters, the length of the vehicle type hose is up to 25 meters, and some products even need to be customized for 30 meters or even longer. The hose used for common gas-liquid two-phase flow water-mist gun generally consists of two hoses, into which water and gas are respectively introduced, and then the hoses are respectively connected with the gun, a liquid storage container and a gas cylinder through joints, and the two hoses are arranged together through a hoop or a cloth sleeve.

The inventor finds that when the gas-liquid two-phase flow water mist gun connecting hose in the prior art is twisted, the two hoses are easily twisted with each other, so that excessive space is occupied; meanwhile, when the connecting hose is manufactured, the clamp or the cloth cover is added more difficultly, and extra cost is increased; the hose material is usually rubber, and because two hoses are required, the cost of the hose and the total weight of the hose are relatively high.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problem, the present application discloses a gas-liquid two-phase flow water mist gun connection hose, including a pipe body and a pipe joint connected with the pipe body, the pipe body includes: the sealing joint is connected with the pipe joint, and the first conveying pipe and the second conveying pipe are nested with each other;

the first conveying pipe is positioned on the inner side and is hollow inside to form a first fluid channel;

the second delivery pipe is positioned at the outer side, and a radial gap between the first delivery pipe and the second delivery pipe forms a second fluid channel;

the sealing joint is provided with a first through hole communicated with the first fluid channel and a second through hole communicated with the second fluid channel, and the pipe joint is provided with a first outlet communicated with the first through hole and a second outlet communicated with the second through hole;

one of the first through hole and the second through hole is arranged along the axial direction of the pipe body, and the other one is arranged along the radial direction of the pipe body.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, the sealing joint comprises:

the first fixing part is used for being connected with the first conveying pipe in a sealing mode and connected with the pipe joint in a sealing mode, and a first through hole is formed in the first fixing part;

and the second fixing part is used for being connected with the second conveying pipe in a sealing manner and is connected with the pipe joint in a sealing manner.

Optionally, the first fixing portion is provided with a stepped hole through which the first conveying pipe penetrates, the first fixing portion further comprises a cock matched with the stepped hole, the cock is used for expanding the pipe diameter of the first conveying pipe so as to clamp the first conveying pipe and the stepped hole, and the cock is provided with a first via hole which communicates the first fluid channel and the first through hole.

Optionally, the first fixing portion is further provided with the second through hole.

Optionally, the pipe joint comprises a connection region for receiving the sealing joint, the first outlet and the second outlet communicating into the connection region; the first fixing portion is arranged in the connecting area and is in sealing fit with the inner side wall of the connecting area, and the second fixing portion covers the pipe joint to close the connecting area.

Optionally, two first sealing elements arranged side by side are arranged on the circumferential direction of the first fixing portion, and the first through hole is formed between the two first sealing elements; the periphery of the second fixing portion is provided with a second sealing piece, the second sealing piece is used for being matched with an external accessory to restrain the boundary of the second through hole, and the flow area of the first through hole is isolated from the flow area of the second through hole through the first sealing piece.

Optionally, the first conveying pipe is matched with the center of the first fixing portion, and the second through hole is formed in the radial outer side of the first fixing portion and penetrates through the first fixing portion in the axial direction of the pipe body.

Optionally, the sealing joint is in the axial of body includes in proper order:

the second fixing part is used for being connected with the second conveying pipe in a sealing mode and is connected with the pipe joint in a sealing mode;

a screw coupling portion provided on the second fixing portion for coupling the pipe joint and closing a coupling region of the pipe joint;

the first fixing part extends into the connecting area and is in sealing fit with the inner side wall of the connecting area, and the first fixing part is used for being in sealing connection with the first conveying pipe; the first fixing part is provided with a first through hole and a second through hole.

Optionally, a part of the second fixing portion extends into the connecting region, and a second sealing member is disposed on a peripheral surface of the part, and the second sealing member is used for closing the connecting region.

Optionally, the pipe joint comprises a connecting region for receiving at least a portion of the sealing joint, the first outlet and the second outlet being arranged coaxially or radially side by side or in different orientations.

Optionally, the axis of the first outlet coincides with or is close to the axis of the connection zone.

The application also discloses an assembly method of the gas-liquid two-phase flow water mist gun connecting hose, the gas-liquid two-phase flow water mist gun connecting hose adopts any one of the technical methods, and the assembly method comprises the following steps:

inserting at least a portion of the sealing joint into a connection area of the pipe joint until the sealing joint closes the connection area;

adjusting an axial position of the first fixing portion until the first fluid passage, the first through hole, and the first outlet communicate, and the second fluid passage, the second through hole, and the second outlet communicate.

The technical scheme disclosed by the application is optimized through the structure of the gas-liquid two-phase flow water mist gun connecting hose, and at least comprises the following technical effects:

1. the cost is reduced;

(1) the manufacturing is simple, no hoop or cloth sleeve is needed, and the corresponding cost is reduced;

(2) the original design adopts 2 hoses which are independently arranged, so that the cost is higher under the limit of various performance parameter indexes;

2. performance is improved; in the prior art, the hose is usually made of rubber; compared with the prior art, the improved effective flow area of the conveying medium in the conveying pipe is effectively increased, larger flow is provided, and the integral use performance is promoted;

3. the volume is reduced; when the conveying pipe is folded and twisted after being used, the improved pipe body avoids the defects that the two original hoses are twisted mutually and occupy more space, and the folded and twisted pipe is neater and tighter on the rotary table, so that the space is saved; the volume is reduced, the storage is convenient, and the storage length of the pipe body can be lengthened by at least 20% under the condition that the rotary disc has the same volume.

Specific advantageous technical effects will be further explained in conjunction with specific structures or steps in the detailed description.

Drawings

FIG. 1a is a schematic view of a connection hose of a two-phase gas-liquid flow water mist gun according to an embodiment;

FIG. 1b is an enlarged schematic view of one end of the connection hose of the gas-liquid two-phase flow water mist gun in FIG. 1 a;

FIG. 1c is a schematic view of a pipe joint according to an embodiment;

FIG. 1d is a schematic view of another embodiment of a pipe joint;

FIG. 2a is a schematic view of a pipe body of a two-phase water mist delivery pipe according to an embodiment;

FIG. 2b is an enlarged view of one end of the tube shown in FIG. 2 a;

FIG. 2c is a schematic view of a sealing joint of the connection hose of the gas-liquid two-phase flow water mist gun in FIG. 2 a;

fig. 2d is a schematic view of the gas-liquid two-phase flow connection hose of fig. 2 a.

The reference numerals in the figures are illustrated as follows:

10. a pipe body;

11. sealing the joint; 111. a first fixed part; 1111. a first through hole; 1112. a second through hole; 1113. a stepped bore; 1114. a cock; 11141. a plug; 1115. a first via hole; 1116. a first seal member; 1117. a first ring groove; 1118. a second ring groove; 112. a second fixed part; 1121. a screw connection part; 1122. a second seal member; 113. shrinking the neck part; 1131. a second via hole;

12. a first delivery pipe; 121. a first fluid channel;

13. a second delivery pipe; 131. a second fluid passage;

20. a pipe joint; 201. a first outlet; 202. a second outlet; 203. a connecting region.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1a to 2c, the present application discloses a gas-liquid two-phase flow water mist gun connection hose, including a pipe body 10 and a pipe joint 20 connected to the pipe body 10, the pipe body 10 including: the sealing joint 11 is connected with the pipe joint 20, and the first conveying pipe 12 and the second conveying pipe 13 are nested with each other;

the first delivery pipe 12 is positioned at the inner side and is hollow inside to form a first fluid channel 121;

the second delivery pipe 13 is located outside and the radial gap between the first delivery pipe 12 and the second delivery pipe 13 forms a second fluid passage 131;

the sealing joint 11 is provided with a first through hole 1111 communicated with the first fluid channel 121 and a second through hole 1112 communicated with the second fluid channel 131, and the pipe joint 20 is provided with a first outlet 201 communicated with the first through hole 1111 and a second outlet 202 communicated with the second through hole 1112;

one of the first through hole 1111 and the second through hole 1112 is disposed along an axial direction of the pipe body 10, and the other is disposed along a radial direction of the pipe body 10.

The first delivery pipe 12 and the second delivery pipe 13 define two mutually isolated delivery passages, namely a first fluid passage 121 and a second fluid passage 131, and the first fluid passage 121 and the second fluid passage 131 can respectively deliver two different media, namely liquid media and gaseous media, on the delivered media, so that the effect of water mist fire extinguishing is realized in the end use. The first duct 12 and the second duct 13, nested inside each other, overcome the technical problems of the prior art solutions with parallel double ducts.

For example, in the flow equivalent area, the technical scheme of parallel double pipes in the prior art is limited by the limitation of the overall pipe diameter of the conveying pipe, so that the cross section of each single conveying pipe is smaller, and in this embodiment, the effective flow area of the single conveying pipe can be effectively increased under the condition that the overall pipe diameter of the conveying pipe is not changed by nesting the first conveying pipe 12 and the second conveying pipe 13. In the distribution of the flow equivalent areas of the first fluid channel 121 and the second fluid channel 131, referring to an embodiment, the equivalent flow area of the first fluid channel 121 is greater than or equal to or less than the equivalent flow area of the second fluid channel 131. The specific distribution of the two fluid channels can be set as required according to the difference of the physicochemical properties of the conveying medium, the change of the conveying efficiency and the adjustment of the conveying pressure.

For example, the delivery tube of the present embodiment also has advantages over the prior art in terms of weight. In the prior art, the pressure of each delivery pipe is maintained by the pipe wall of the delivery pipe, so that the pressure resistance is extremely high. The common conveying pipe in the prior art is made of rubber. However, in the present embodiment, because the first conveying pipe 12 and the second conveying pipe 13 are nested with each other, the synchronization of the pressures can be realized, and particularly, the internal pressure and the external pressure of the first conveying pipe 12 can be influenced with each other, so that the material requirement for the pipe wall of the first conveying pipe 12 is reduced. Referring to an embodiment, the pressure of the first fluid channel 121 and the second fluid channel 131 are equal or close. Therefore, in terms of material selection, referring to an embodiment, the second conveying pipe 13 is made of wear-resistant and pressure-resistant material, and the first conveying pipe 12 is made of lightweight and thin-walled material. The following exemplifies a specific product structure to show the technical effects mentioned in the present embodiment. Liquid pipe and trachea all adopt the rubber material among the prior art, and the internal diameter is 3/8 "and 1/4 respectively, and the second conveyer pipe 13 of the conveyer pipe of exemplification in this embodiment adopts 1/2 for liquid pipe and internal diameter, increase about 1/3 than original, and first conveyer pipe 12 is the trachea and adopts the PU material that the cost is lower, lighter, thin, and external diameter and internal diameter are 6 respectively 4mm, reduce about 1/3 than original, and comprehensive accounting, the cost drops 15-20% when comparing 2 hoses, and weight is showing and lightens, and the flow equivalent area promotes obviously.

The technical solution in the present application can bring the above-mentioned beneficial effects, in addition to the nested arrangement of the first delivery pipe 12 and the second delivery pipe 13, the matching of the sealing joint 11 is also required. The effect of sealing joint 11 lies in corresponding the different medium of carrying nested transport to separate pipeline in to improve the adaptation ability to ordinary product, reduce the adaptation cost of the conveyer pipe in this application of current product adaptation, further improve the spreading value of conveyer pipe in this application.

The following description focuses on the delivery tube itself and the associated description of the interaction of the delivery tube with the coupler 20 is only intended to provide a better understanding of a portion of the delivery tube structure.

In the arrangement of the sealing joint 11, referring to an embodiment, the first fixing portion 111 is provided with a stepped hole 1113 through which the first conveying pipe 12 passes, the first fixing portion 111 further includes a cock 1114 matched with the stepped hole 1113, and the cock 1114 is used for expanding the pipe diameter of the first conveying pipe 12 to clamp the first conveying pipe 12 and the stepped hole 1113.

The stepped bore 1113 serves to engage the first delivery tube 12 which is expanded in diameter, thereby engaging the tap 1114 to effect clamping of the first delivery tube 12. In specific setting, the one end of step hole 1113 towards first conveyer pipe 12 is the path hole, and the one end of cooperating with cock 1114 is the major diameter hole, and cock 1114 can be through interference fit friction force promptly and keep the cooperation with step hole 1113, also can keep the cooperation with step hole 1113 through modes such as screw thread, gluing, welding.

In the assembly direction of the stepped hole 1113 and the cock 1114, referring to an embodiment, the sealing joint 11 has two opposite sides and a side facing the first delivery pipe 12 and the second delivery pipe 13 (a right side in fig. 2 c) and a side facing away from the first delivery pipe 12 and the second delivery pipe 13 (a left side in fig. 2 c), respectively, and the cock 1114 is installed into the sealing joint 11 from the side of the sealing joint 11 facing away from the first delivery pipe 12 and the second delivery pipe 13 and is engaged with the stepped hole 1113.

The arrangement in this embodiment can facilitate installation of the cock 1114, as well as disassembly and maintenance of the first delivery tube 12 during use of the delivery tube. After the cock 1114 and the stepped hole 1113 are separated, the first conveying pipe 12 can be drawn out from the second conveying pipe 13 through the stepped hole 1113, thereby further reducing the requirements on the material and performance parameters of the first conveying pipe 12.

In the connection relationship of the pipes, referring to an embodiment, the cock 1114 is provided with a first through hole 1115 communicating the first fluid passage 121 and the first through hole 1111.

The first via hole 1115 achieves a communicating relationship between the first fluid channel 121 and the first through hole 1111. The first through hole 1111 communicates with the first outlet 201 of the pipe joint 20 after the pipe body 10 is assembled with the pipe joint 20, thereby enabling the delivery of the transport medium in the first fluid passage 121. The first through hole 1115 may be provided by the cock 1114 or by the first fixture 111.

Referring to fig. 2d, in one embodiment, stepped bore 1113 is open on a side facing away from first delivery tube 12 and is engaged with plug 11141, first via 1131 is open toward plug 11141, and plug 11141 closes stepped bore 1113 to bound first via 1131. As shown in fig. 2d, the first through hole 1131 is formed by two parts, one part is an open part on the cock 1114, and the other part is a closed part on the first fixing part 111. Wherein the open portion of the cock 1114 is in communication with the interior of the stepped bore 1113, and the closure of this portion is accomplished by the plug 11141 in this embodiment. The above arrangement has the advantage of ensuring a seal while facilitating maintenance of the fit, and is more advantageous for the removal and maintenance of the first delivery tube 12 as mentioned above.

Further, upon installation of the cock 1114, positioning of the cock 1114 may be accomplished by the plug 11141, in addition to the manner described above. For example, biasing structure extending toward plug 1114 may be provided on plug 11141 such that plug 1114 is retained within stepped bore 1113 by the biasing structure during installation of plug 11141 in place, thereby providing mating clamping of plug 114 and stepped bore 1113 to first delivery tube 12.

In the communication manner of the second fluid channel 131, referring to an embodiment, a necking portion 113 is disposed between the first fixing portion 111 and the second fixing portion 112, and a second through hole 1131 for communicating the second through hole 1112 with the second fluid channel 131 is disposed on the necking portion 113.

The second via 1131 realizes a communication relationship between the second fluid channel 131 and the second via 1112. The second through hole 1112 is communicated with the second outlet 202 of the pipe joint 20 after the pipe body 10 is assembled with the pipe joint 20, thereby realizing the output of the conveying medium in the second fluid channel 131. The constriction of the constriction portion 113 is arranged relative to the circumferential dimensions of the first fixing portion 111 and the second fixing portion 112, so that a receiving space is formed between the constriction portion 113 and the corresponding connecting region 203 of the pipe joint 20, and the second through hole 1112 is in communication with the receiving space.

The separation of the two fluid channels is realized by a sealing element. Referring to an embodiment, two first sealing members 1116 are disposed side by side on the circumference of the first fixing portion 111, and the first through hole 1111 is disposed between the two first sealing members 1116.

The first sealing members 1116 form a sealing space for restricting the relation between the first fixing portion 111 and the pipe joint 20 connected thereto, and when the first through hole 1111 is aligned with the first outlet 201 of the pipe joint 20, the first sealing members 1116 seal the communication boundary therebetween, thereby preventing interference between the first fluid passage 121 and the second fluid passage 131.

In order to further improve the conveying effect and avoid the conveying capability reduction caused by the circumferential dislocation, referring to an embodiment, the circumferential surface of the first fixing portion 111 is provided with a first annular groove 1117, the two first sealing members 1116 are disposed on two sides of the first annular groove 1117, and the first through hole 1111 is communicated with the first annular groove 1117.

The first ring groove 1117 can eliminate the alignment error between the first through hole 1111 and the first outlet 201, and also can provide a buffering confluence space, thereby improving the conveying efficiency. In the drawing, the second annular groove 1118 corresponding to the first annular groove 1117 is provided in the connecting region 203, and the action of the second annular groove 1118 on the first annular groove 1117 can further improve the action effect of the first annular groove 1117.

In terms of the mutual isolation of the media conveyed by the first conveying pipe 12 and the second conveying pipe 13 in the sealing joint 11, referring to an embodiment, a second sealing element 1122 is arranged on the circumference of the second fixing portion 112, the second through hole 1131 is arranged between the first sealing element 1116 and the second sealing element 1122, the second sealing element 1122 is used for cooperating with an external fitting to constrain the boundary of the second through hole 1131, and the flow areas of the first through hole 1115 and the first through hole 1111 are isolated from the flow areas of the second through hole 1131 and the second through hole 1112 through the first sealing element 1116.

Where the external component that mates with the second seal 1122 may be a separate component or a corresponding structure to the sealing joint 11 itself. In the embodiment of fig. 2c, there is actually an open space between the second via 1131 and the second via 1112, and the space needs to be constrained to allow the fluid to be transported in a closed manner. For example, in the solution of fig. 1b, the closing of the space is achieved by means of an external pipe connection 20. In fact, the enclosure of this space depends on the effect of the first and

second seals

1116, 1122. The first and

second seals

1116 and 1122 cooperatively bound the boundaries of the second via 1131, while the first seal 1116 also provides isolation for isolating the media transported in the first and

second transport tubes

12 and 13. The structure of this embodiment can realize both keeping apart while control holistic joint volume and inside complexity, convenient production easily assembles.

In the above, the corresponding structure of the delivery pipe is described with emphasis on the delivery effect, the fitting between the sealing joint 11 and the pipe joint 20 is required for the delivery pipe, and hereinafter, the description will be given with emphasis on how the delivery pipe is fitted to the pipe joint 20.

In the details of the mating of the sealing joint 11 and the pipe joint 20, with reference to an embodiment, the sealing joint 11 comprises:

the first fixing part 111 is used for being connected with the first conveying pipe 12 in a sealing mode and is connected with the pipe joint 20 in a sealing mode, and a first through hole 1111 is formed in the first fixing part 111;

and a second fixing portion 112 for sealing connection of the second delivery pipe 13 and the pipe joint 20.

The first fixing portion 111 is sealingly connected to the pipe joint 20 to achieve a sealing connection between the first fluid passage 121 and the first outlet 201, and the second fixing portion 112 is sealingly connected to the pipe joint 20 to achieve a sealing connection between the second fluid passage 131 and the second outlet 202, thereby achieving a stable conveyance of the first fluid passage 121 and the second fluid passage 131.

In the arrangement details of the pipe joint 20, with reference to an embodiment, the pipe joint 20 includes a connection region 203 for housing the sealing joint 11, and the first outlet 201 and the second outlet 202 communicate into the connection region 203; the first fixing portion 111 is disposed at the connection region 203 and is in sealing engagement with an inner sidewall of the connection region 203, and the second fixing portion 112 is disposed at the pipe joint 20 to close the connection region 203.

The arrangement that the connecting region 203 accommodates the first fixing portion 111 can provide a more stable connecting mode for the first fixing portion 111, the first fixing portion 111 is provided with the first through hole 1111 and the second through hole 1112, and the first through hole 1111 and the second through hole 1112 can be positioned stably due to the stable position relation of the first fixing portion 111, so that the connecting stability of each pipeline in the gas-liquid two-phase flow water mist gun connecting hose is ensured, and the conveying effect is improved.

The provision of the second fixing portion 112 covering the connection region 203 can improve the connection strength and stability between the sealing joint 11 and the pipe joint 20. Meanwhile, the arrangement mode of the cover can improve the sealing effect. In a specific implementation of the covering, the second fixing portion 112 may be provided with a corresponding protruding structure, and may also be implemented by the screw portion 1121 as described below. The screw portion 1121 can rotate relative to the second fixing portion 112 but is axially limited, so that technical advantages of convenience in assembly and fixing effect can be achieved.

In the spatial arrangement details of the pipelines, referring to an embodiment, the first delivery pipe 12 is matched with the central position of the first fixing portion 111, and the second through hole 1112 is arranged on the radial outer side of the first fixing portion 111 and penetrates the first fixing portion 111 in the axial direction of the pipe body 10.

The first delivery pipe 12 is disposed centrally with respect to the second delivery pipe 13 and is near the coaxial state, and can contribute to the stabilization of the second fluid passage 131. Therefore, in the present embodiment, the first delivery pipe 12 is fixed at the central position of the first fixing portion 111 by the first fixing portion 111, and the specific structure can refer to the arrangement of the cock 1114 and the stepped hole 1113 described above. It is reasonably preferable that the second through holes 1112 are displaced from the center of the first transport pipe 12, and in terms of number, the effect of transporting the medium in the second fluid channel 131 can be enhanced by providing a plurality of second through holes 1112 in the first fixing portion 111, or the effect can be achieved by enlarging the diameter of the second through holes 1112.

Referring to the above, from the viewpoint of the overall structure of the sealing joint 11, in one embodiment, the sealing joint 11 sequentially includes, in the axial direction of the pipe body 10:

a second fixing portion 112 for hermetically connecting the second delivery pipe 13 and the pipe joint 20;

a screw-in portion 1121 provided at the second fixing portion 112 for connecting the pipe joint 20 and closing a connection region 203 of the pipe joint 20;

the first fixing part 111 extends into the connecting area 203 and is in sealing fit with the inner side wall of the connecting area 203, and the first fixing part 111 is used for being connected with the first conveying pipe 12 in a sealing mode; the first fixing portion 111 is provided with a first through hole 1111 and a second through hole 1112.

In this embodiment, the sealing joint 11 can ensure stable connection with the pipe joint 20 while ensuring the distribution efficiency of the internal pipeline, thereby improving the use effect of the connection hose of the integral gas-liquid two-phase flow water mist gun.

In terms of the implementation of the two seals, in an embodiment, a portion of the second fixing portion 112 extends into the connection region 203, and a second sealing member 1122 is disposed on a peripheral surface of the portion, and the second sealing member 1122 is used for closing the connection region 203.

The specific effect of the first seal 1116 can be referred to in the above description, and will not be described in detail. As for the second sealing member 1122, the second sealing member 1122 achieves an effect that the second fixing portion 112 closes the connection region 203. Compared to the sealing effect achieved by the covering, the second sealing member 1122 is disposed on the circumferential surface of the second fixing portion 112, so that the sealing failure caused by the movement between the pipe joint 20 and the sealing joint 11 can be avoided, the sealing effect is better, and the operation feeling is excellent.

In the structural arrangement of the pipe coupling 20 itself, with reference to an embodiment, the pipe coupling 20 comprises a connection region 203 for housing at least part of the sealing joint 11, a first outlet 201 and a second outlet 202, the first outlet 201 and the second outlet 202 being arranged coaxially or radially side by side or in different orientations.

Referring to the drawings, the arrangement of the first outlet 201 and the second outlet 202 has various manners. It is possible to adjust the media transported in the first fluid channel 121 and the second fluid channel 131 as required according to actual needs.

In the present embodiment, a preferable structure is proposed. Referring to an embodiment, the axis of the first outlet 201 coincides with or is close to the axis of the connection zone 203. The first outlet 201 is used for conveying the liquid-phase medium in this embodiment, and a high flow rate is required, so that the flow rate of the conveying medium can be increased by the fact that the axis of the connecting region 203 coincides with the first outlet. In actual products, certain errors can occur on the axes of the two due to reasons such as appearance, manufacturing difficulty, machining errors and the like, but in principle, the errors of the two are small.

inserting at least a portion of the sealing joint 11 into the connection area 203 of the pipe joint 20 until the sealing joint 11 closes the connection area 203;

the axial position of the first fixing portion 111 is adjusted until the first fluid channel 121, the first through hole 1111 and the first outlet 201 are communicated, and the second fluid channel 131, the second through hole 1112 and the second outlet 202 are communicated.

The point of assembly is that the conduits are interconnected in place so that the conduits are independent of each other by the action of the first and

second seals

1116, 1122.

The assembling method is mainly characterized in that the gas-liquid two-phase flow water spray gun connecting hose is assembled and disassembled in the using process. During production, the sealing joint 11 and the first delivery pipe 12 and the second delivery pipe 13 need to be assembled, the sealing joint 11 is connected with the second delivery pipe 13 through a self anti-dropping structure and a pressing cap, and the first delivery pipe 12 is assembled through the cock 1114 and the stepped hole 1113. The first delivery tube 12 can be conveniently removed and maintained for subsequent use. The above related expressions can be specifically referred to, and are not repeated herein.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.

Claims

1. Gas-liquid two-phase flow water mist gun connecting hose comprises a hose body and a pipe joint connected with the hose body, and is characterized in that the hose body comprises: the sealing joint is connected with the pipe joint, and the first conveying pipe and the second conveying pipe are nested with each other;

2. The gas-liquid two-phase flow mist gun connection hose of claim 1, wherein the sealing nipple comprises:

3. The two-phase gas-liquid flow water mist gun connection hose according to claim 2, wherein the first fixing portion is provided with a stepped hole through which the first delivery pipe passes, the first fixing portion further comprises a cock fitted to the stepped hole, the cock is configured to expand a pipe diameter of the first delivery pipe to clamp the first delivery pipe and the stepped hole, and the cock is provided with a first through hole communicating the first fluid passage and the first through hole.

4. The gas-liquid two-phase flow water mist gun connection hose according to claim 2, wherein the second through hole is further provided in the first fixing portion.

5. The gas-liquid two-phase flow water mist gun connection hose according to claim 4, wherein the first fixing portion is provided circumferentially with two first sealing members arranged side by side, and the first through hole is provided between the two first sealing members; the periphery of the second fixing portion is provided with a second sealing piece, the second sealing piece is used for being matched with an external accessory to restrain the boundary of the second through hole, and the flow area of the first through hole is isolated from the flow area of the second through hole through the first sealing piece.

6. The gas-liquid two-phase flow mist gun connection hose of claim 4, wherein the pipe fitting comprises a connection region for receiving the sealing fitting, the first outlet and the second outlet communicating into the connection region; the first fixing portion is arranged in the connecting area and is in sealing fit with the inner side wall of the connecting area, and the second fixing portion covers the pipe joint to close the connecting area.

7. The gas-liquid two-phase flow mist gun connection hose according to claim 6, wherein the first delivery pipe is fitted to a central position of the first fixing portion, and the second through hole is provided radially outside the first fixing portion and penetrates the first fixing portion in an axial direction of the pipe body.

8. The gas-liquid two-phase flow mist gun connection hose according to claim 1, wherein the sealing joint comprises, in order in the axial direction of the pipe body:

9. The gas-liquid two-phase flow mist gun connection hose according to claim 8, wherein a portion of the second fixing portion extends into the connection section, and a second sealing member is provided on a peripheral surface of the portion to close the connection section.

10. A gas-liquid two-phase flow mist gun connection hose according to claim 1, wherein the pipe connection comprises a connection region for receiving at least a portion of the sealing joint, the first outlet and the second outlet being arranged coaxially or radially side by side or in different orientations.