CN215387213U - Plastic socket type spray head for fire-fighting automatic water-spraying fire-extinguishing system - Google Patents
Plastic socket type spray head for fire-fighting automatic water-spraying fire-extinguishing system Download PDFInfo
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- CN215387213U CN215387213U CN202121670016.5U CN202121670016U CN215387213U CN 215387213 U CN215387213 U CN 215387213U CN 202121670016 U CN202121670016 U CN 202121670016U CN 215387213 U CN215387213 U CN 215387213U
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Abstract
The utility model discloses a plastic socket type spray header for a fire-fighting automatic water-spraying fire-extinguishing system, which adopts the technical scheme that a cylindrical interface is arranged at the tail part of a spray header shell, a connecting pipe with one end being an engaging end and the other end being a socket end is designed, the interface of the spray header and the engaging end of the connecting pipe are connected by injection molding, and when the spray header is used, the socket end of the connecting pipe and a fire pipeline are in plug-in type glue cold melting connection to finish the connection of the spray header and the fire pipeline.
Description
Technical Field
The utility model relates to the technical field of fire-fighting water supply systems, which is used for assembling a spray header and a PVC-C fire-fighting plastic pipe, in particular to a plastic socket type spray header for a fire-fighting automatic water spraying fire-extinguishing system.
Background
The design of the pipeline and the joint of the fire-fighting automatic water-spraying fire-extinguishing system in the prior art is galvanized steel pipe, and the galvanized steel pipe is very easy to corrode, so that the phenomenon of zinc coating falling off and corrosion easily occurs, and a large number of fire-fighting pipelines are seriously corroded, so that the spray head is blocked by rust when a fire breaks out, so that water cannot be sprayed to fight the fire in time, and a large fire disaster occurs; because of the limitation of the production process of galvanized steel pipes, when the spray joint and the steel pipe are connected in the prior art, an internal thread adapter is required to be connected with the steel pipe, the connection of the steel pipe and the spray joint needs threading connection, otherwise, the installation is impossible, the damage or burr of a thread sealing surface can cause the failure of sealing in the construction process, the labor cost is increased, the installation and the maintenance are inconvenient, and the potential safety hazard of easy corrosion and easy leakage exists.
The design specification of the automatic water-spraying fire-extinguishing system is combined by the urban and rural construction department of the housing of the people's republic of China and the national quality supervision, inspection and quarantine bureau of the people's republic of China and published in 2017, 5 and 27, the facilities in 2018, 1 and 1 are released, the original galvanized steel pipe is gradually replaced by the PVC-C plastic pipeline to be connected, and the installation and use capacity of the urban fire-fighting pipeline is upgraded so as to improve the fire-fighting and fire-extinguishing capacity. In order to fundamentally solve the defect that the galvanized steel pipe is easy to rust, the PVC-C fire-fighting plastic pipe is used for replacing the galvanized steel pipe, and the PVC-C fire-fighting plastic pipe is connected with the pipeline or the pipeline and a device in a plug-in type cold melting mode by using special glue, so that the connector of the spray header and the connection mode of the spray header and the fire-fighting pipeline in the prior art are changed, and the trend is that the PVC-C fire-fighting plastic pipe is used for implementing plug-in type cold melting connection.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the defects of the prior art and provides a plastic socket type spray header for a fire-fighting automatic water-spraying fire-extinguishing system, a cylindrical interface is arranged at the tail part of a spray header shell, a connecting pipe with one end being a meshing end and the other end being a socket end is designed, the interface of the spray header and the meshing end of the connecting pipe are connected by injection molding, when in use, the socket end of the connecting pipe is connected with the fire pipeline in a plug-in type glue cold melting way to complete the connection of the spray header and the fire pipeline, the utility model completely changes the current situation that the traditional spray header is connected with the galvanized steel pipe by screw thread, in the fire-fighting automatic water-spraying fire-extinguishing system, the popularization and application of PVC-C plastic pipelines to gradually replace the original galvanized steel pipes are promoted, the utility model can obviously reduce the labor intensity and the material cost, and has the advantages of material saving, space saving, easy installation and good sealing performance.
The specific technical scheme for realizing the purpose of the utility model is as follows:
a plastic socket joint type spray header for a fire-fighting automatic water spraying fire extinguishing system is characterized by comprising a spray header, a connecting pipe and a sealing ring;
the tail part of the spray head shell is provided with a cylindrical interface, a step is arranged between the outer wall of the interface and the shell, the outer wall of the interface is sequentially provided with at least three annular grooves, and the top and the bottom of each annular groove are provided with arc chamfers;
the pipe connecting device comprises a connecting pipe, a pipe connecting piece, a first bearing platform, a second bearing platform and a connecting pipe, wherein the connecting pipe is a tubular piece, the axis of the connecting pipe is a straight line or a bending line formed by combining a straight line and a curve, one end of the connecting pipe is a meshing end, the other end of the connecting pipe is a socket end, a plurality of annular flanges and the first bearing platform are sequentially arranged on the inner wall of the pipe at the meshing end, and the inner wall of the pipe at the socket end is provided with a cone angle alpha and the second bearing platform which are 2-4 degrees and are in a bell mouth shape;
the sealing rings are arranged in two of the annular grooves on the interface respectively;
the interface of the spray header is connected with the meshing end of the connecting pipe in an injection molding manner, a plurality of annular grooves of the interface are meshed with a plurality of annular flanges of the meshing end, and the sealing ring is positioned between the annular grooves and the annular flanges; and the step of the interface is contacted with the end surface of the meshing end, and the pipe orifice of the interface is contacted with the first bearing platform of the meshing end.
The surfaces of the spray header shell and the outer wall of the interface are subjected to electroplating treatment.
The utility model adopts the technical scheme that a cylindrical interface is arranged at the tail part of a spray header shell, a connecting pipe with one end as an engaging end and the other end as a socket end is designed, the interface of the spray header and the engaging end of the connecting pipe are connected by injection molding, and when the spray header is used, the socket end of the connecting pipe and a fire pipeline are in plug-in type glue cold melting connection to complete the connection of the spray header and the fire pipeline.
The utility model has the following technical characteristics:
the existing spray header is designed to be in all-metal threaded connection, and needs to be matched with an internal thread adapter for use when in use, particularly in the currently popularized plastic fire-fighting pipeline system, the spray header still needs an internal thread adapter for connection.
Drawings
Fig. 1 is a schematic structural view of the utility model;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a schematic view of the utility model with the axis being the bending line.
Detailed Description
Referring to fig. 1 and 3, the present invention includes a shower head 1, a nozzle 2 and a sealing ring 3.
Referring to fig. 1 and 2, a cylindrical interface is arranged at the tail of a shell of the spray header 1, a step 11 is arranged between the outer wall of the interface and the shell, at least three annular grooves 12 are sequentially arranged on the outer wall of the interface, and arc chamfers are arranged at the top and the bottom of each annular groove 12.
Referring to fig. 1 and 3, the adapter tube 2 is a tubular member, an axis of the adapter tube 2 is a straight line or a bending line formed by combining a straight line and a curved line, one end of the adapter tube 2 is a meshing end, the other end of the adapter tube is a socket end, a plurality of annular flanges 21 and a first bearing platform 22 are sequentially arranged on an inner wall of the meshing end, and a taper angle α and a second bearing platform 23 which are 2-4 ° and are in a bell mouth shape are arranged on an inner wall of the socket end.
Referring to fig. 1 and 3, the sealing rings 3 are two pieces, and the sealing rings 3 are respectively disposed in two of the annular grooves 12 on the interface.
Referring to fig. 1, 2 and 3, the interface of the shower head 1 is connected with the meshing end of the adapter 2 by injection molding, a plurality of annular grooves 12 of the interface are meshed with a plurality of annular flanges 21 of the meshing end, wherein the sealing ring 3 is located between the annular grooves 12 and the annular flanges 21; and the step 11 of the interface is contacted with the end surface of the engaging end, and the nozzle of the interface is contacted with the first bearing platform 22 of the engaging end.
Referring to fig. 1 and 3, the surfaces of the housing and the outer wall of the interface of the showerhead 1 are plated.
Referring to fig. 1, 2 and 3, in order to solve the problem of connection and sealing between the spray header 1 and the adapter 2, the utility model implements electroplating treatment on the surface of the outer wall of the interface of the spray header 1; the utility model also has a cylindrical interface at the afterbody of the body of the shower head 1, there are steps 11 between body and the interface outer wall, there are several annular grooves 12 sequentially on the outer wall of the interface, mount two seal rings 3 in two of them annular groove 12 on the interface separately, and locate the interface equipped with seal ring 3 in the mould, finish the interface of the shower head 1 and engaging end of the connecting pipe 2 to inject plastics and connect once through injecting plastics, several annular grooves 12 of the interface and several annular flanges 21 of the engaging end are engaged with each other, wherein, the seal ring 3 is injected between annular groove 12 and annular flange 21; and the step 11 of the interface touches the end surface of the meshing end, and the pipe orifice of the interface touches the first bearing platform 22 of the meshing end, so that the spraying head 1 and the connecting pipe 2 are ensured to have good adhesion performance and sealing performance.
Referring to fig. 1, 2 and 3, in order to solve the strength problem of the joint of the spray header 1 and the adapter 2, the utility model is provided with a cylindrical interface at the tail of the spray header 1, the interface is provided with a plurality of annular grooves 12, and the top and the bottom of the annular grooves 12 are both provided with arc chamfers, when the interface of the spray header 1 is connected with the meshing end of the adapter 2 by injection molding, the plurality of annular grooves 12 of the interface of the spray header 1 are meshed with the plurality of annular flanges 21 of the meshing end of the adapter 2, at this time, the arcs arranged at the root parts of the annular grooves 12 and the annular flanges 21 can effectively avoid stress concentration, ensure the joint strength of the joint of the spray header 1 and the adapter 2, and prolong the service life of the product.
Referring to fig. 1 and 3, when the utility model is used, in the process of arranging the plastic fire-fighting pipeline system, a spray header pipeline is reserved, and the spigot-and-socket end of the connecting pipe 2 is inserted into the reserved spray header pipeline and is connected by using special glue for cold melting.
Referring to fig. 1 and 3, in order to facilitate the insertion of the present invention with the shower head pipeline, a taper angle α of 2-4 ° in a bell mouth shape is arranged on the inner wall of the pipe at the socket end of the connecting pipe 2, which is beneficial to the insertion of the present invention with the shower head pipeline, and a second bearing platform 23 is arranged in the socket end of the connecting pipe 2, which is not only convenient for the limit of the insertion of the present invention with the shower head pipeline during installation, but also can block the overflow of cold-melt glue.
Referring to fig. 1 and 3, in order to adjust the installation posture of the spray head of the plastic fire fighting pipeline, the axis of the connecting pipe 2 designed by the utility model is a straight line or a bending line formed by combining a straight line and a curve; the axial line is a straight line, namely the axial line of the meshing end of the connecting pipe 2 and the axial line of the socket end are on the same straight line; the axis of the connecting pipe is a bending line, namely the axis of the meshing end of the connecting pipe 2 is intersected with the axis of the socket end at an angle of 90-135 degrees, and the middle part of the connecting pipe is excessively connected by a curve.
Claims (2)
1. A plastic socket joint type spray header for a fire-fighting automatic water spraying fire extinguishing system is characterized by comprising a spray header (1), a connecting pipe (2) and a sealing ring (3);
the tail part of the shell of the spray header (1) is provided with a cylindrical interface, a step (11) is arranged between the outer wall of the interface and the shell, the outer wall of the interface is sequentially provided with at least three annular grooves (12), and the top and the bottom of each annular groove (12) are provided with arc chamfers;
the connecting pipe (2) is a tubular piece, the axis of the connecting pipe (2) is a straight line or a bending line formed by combining a straight line and a curve, one end of the connecting pipe (2) is a meshing end, the other end of the connecting pipe is a socket end, a plurality of annular flanges (21) and a first bearing platform (22) are sequentially arranged on the inner wall of the pipe of the meshing end, and a cone angle alpha and a second bearing platform (23) which are 2-4 degrees and are in a bell mouth shape are arranged on the inner wall of the pipe of the socket end;
the sealing rings (3) are two, and the sealing rings (3) are respectively arranged in two of the annular grooves (12) on the connector;
the interface of the spray header (1) is connected with the meshing end of the connecting pipe (2) in an injection molding manner, a plurality of annular grooves (12) of the interface are meshed with a plurality of annular flanges (21) of the meshing end, and the sealing ring (3) is positioned between the annular grooves (12) and the annular flanges (21); and the step (11) of the interface is contacted with the end surface of the engaging end, and the nozzle of the interface is contacted with the first bearing platform (22) of the engaging end.
2. The plastic socket type spray header for the fire-fighting automatic sprinkler system according to claim 1, characterized in that the surfaces of the housing of the spray header (1) and the outer wall of the mouthpiece are plated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121670016.5U CN215387213U (en) | 2021-07-22 | 2021-07-22 | Plastic socket type spray head for fire-fighting automatic water-spraying fire-extinguishing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121670016.5U CN215387213U (en) | 2021-07-22 | 2021-07-22 | Plastic socket type spray head for fire-fighting automatic water-spraying fire-extinguishing system |
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| Publication Number | Publication Date |
|---|---|
| CN215387213U true CN215387213U (en) | 2022-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121670016.5U Active CN215387213U (en) | 2021-07-22 | 2021-07-22 | Plastic socket type spray head for fire-fighting automatic water-spraying fire-extinguishing system |
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| CN (1) | CN215387213U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023000911A1 (en) * | 2021-07-22 | 2023-01-26 | 上海远洲管业科技股份有限公司 | Plastic socket-and-spigot type sprinkler head for fire-fighting automatic sprinkler system |
-
2021
- 2021-07-22 CN CN202121670016.5U patent/CN215387213U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023000911A1 (en) * | 2021-07-22 | 2023-01-26 | 上海远洲管业科技股份有限公司 | Plastic socket-and-spigot type sprinkler head for fire-fighting automatic sprinkler system |
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