CN215335121U - Clamp type tee joint for PVC-C fire-fighting plastic pipe - Google Patents

Clamp type tee joint for PVC-C fire-fighting plastic pipe Download PDF

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Publication number
CN215335121U
CN215335121U CN202121823930.9U CN202121823930U CN215335121U CN 215335121 U CN215335121 U CN 215335121U CN 202121823930 U CN202121823930 U CN 202121823930U CN 215335121 U CN215335121 U CN 215335121U
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CN
China
Prior art keywords
clamp
pipe
tee joint
upper cover
pvc
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Active
Application number
CN202121823930.9U
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Chinese (zh)
Inventor
周文忠
周森洪
唐军
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Shanghai Yuanzhou Pipe Technology Co ltd
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Shanghai Yuanzhou Pipe Technology Co ltd
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Priority to CN202121823930.9U priority Critical patent/CN215335121U/en
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Abstract

The utility model discloses a clamp type tee joint for a PVC-C fire-fighting plastic pipe, which adopts a pair of clamps clasped with the plastic pipe, wherein a connecting pipe is arranged on the side wall of the clamp, when the tee joint is required to be arranged on the plastic pipe, only a hole needs to be drilled on the pipe wall of the plastic pipe, the clamp clasps the plastic pipe, and the connecting pipe on the clamp is communicated with the hole, so that the tee joint is arranged on the plastic pipe. The utility model completely changes the structure arrangement and the connection method of the tee joint on the main water pipe in the traditional fire extinguishing system, promotes the popularization and the application of PVC-C plastic pipelines to gradually replace the original galvanized steel pipe in the fire extinguishing system, can obviously lighten the labor intensity and reduce the material cost, and has the advantages of material saving, space saving, easy installation and good sealing performance.

Description

Clamp type tee joint for PVC-C fire-fighting plastic pipe
Technical Field
The utility model relates to the technical field of fire-fighting water supply systems, in particular to a clamp type tee joint for a PVC-C fire-fighting plastic pipe.
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 restriction of the galvanized steel pipe production process, the tee joint in the prior art must be cut off the steel pipe when being connected with the steel pipe, and the tee joint is connected after threading at two connecting ends of the steel pipe, otherwise, the tee joint cannot be installed, so that the connection has the defects of large workload, sealing failure in the construction process due to the damage or burrs of a thread sealing surface, increased labor cost, inconvenience in installation and maintenance, and easy corrosion and leakage potential safety hazards.
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 galvanized steel pipes are easy to rust, the PVC-C fire-fighting plastic pipe is used for replacing a pipeline of a fire-fighting automatic water-spraying fire-fighting system, and when the PVC-C fire-fighting plastic pipe is connected with the pipeline or the pipeline and a device, the PVC-C fire-fighting plastic pipe is connected in a plug-in cold melting mode by using special glue, so that the structural arrangement and the connection method of a tee joint on a main water pipe in a traditional fire-fighting system are changed, and the requirement is very high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a clamp type tee joint for PVC-C fire-fighting plastic pipes, aiming at the defects of the prior art. When the tee joint is arranged on the plastic main pipe, the clamp provided by the utility model is clasped on the plastic pipe only by punching a hole on the pipe wall of the plastic main pipe, and the convex edge of the connecting pipe of the upper cover of the clamp is clamped in the hole and is communicated with the hole through the connecting pipe, so that the tee joint is arranged on the plastic pipe. In order to solve the sealing problem, a sealing ring is arranged between the annular sealing groove of the upper cover of the hoop and the periphery of the hole of the plastic main pipe. The utility model completely changes the structure arrangement and the connection method of the tee joint on the main water pipe in the traditional fire extinguishing system, promotes the popularization and the application of PVC-C plastic pipelines to gradually replace the original galvanized steel pipe in the fire extinguishing system, can obviously lighten the labor intensity and reduce 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 clamp type tee joint for a PVC-C fire-fighting plastic pipe is characterized by comprising a clamp upper cover, a clamp lower cover, a sealing ring, a metal lining ring and a bolt nut;
the clamp upper cover is a semi-cylindrical shell member, a connecting pipe communicated with the semi-cylinder is arranged on the shell wall of the shell member, the axis of the connecting pipe and the axis of the semi-cylinder are mutually perpendicular and intersected, a convex edge and an annular sealing groove are arranged on an annular intersecting line of an end opening of the connecting pipe and the inner wall of the shell, first lug blocks are symmetrically arranged on two sides of the outer wall of the shell, and first bolt holes are formed in the first lug blocks;
the clamp lower cover is a semi-cylindrical shell piece, second lug blocks are symmetrically arranged on two sides of the outer wall of the shell, and second bolt holes corresponding to the first bolt holes are formed in the second lug blocks;
the sealing ring is arranged in an annular sealing groove of the hoop upper cover;
the metal lining rings are four pieces and are respectively embedded in a first bolt hole of the upper clamp cover and a second bolt hole of the lower clamp cover;
the number of the bolts and the nuts is two;
the clamp upper cover corresponds the lock with the clamp lower cover, and the bolt nut passes through the metal junk ring of first bolt hole and second bolt hole with clamp upper cover and clamp lower cover fastening.
A bearing platform is arranged in the pipe of the connecting pipe on the upper cover of the clamp, and the inner wall of the pipe is provided with a cone angle alpha which is 2-4 degrees and is in a horn mouth shape.
And a positioning groove is arranged in the radial direction of the annular sealing groove in the connecting pipe.
And a bulge is arranged on the outer side of the sealing ring in the radial direction.
The utility model adopts the clamp upper cover and the clamp lower cover to form a pair of clamps which are encircled with the plastic pipe, the shell wall of the clamp upper cover is provided with the connecting pipe communicated with the semi-cylinder, when the plastic main pipe is provided with the tee joint, only a hole needs to be drilled on the pipe wall of the plastic main pipe, the clamp of the utility model is encircled on the plastic pipe, and the tee joint is arranged on the plastic pipe through the connecting pipe and the hole. In order to solve the sealing problem, a sealing ring is arranged between the annular sealing groove of the upper cover of the hoop and the periphery of the hole of the plastic main pipe. The utility model completely changes the structure arrangement and the connection method of the tee joint on the main water pipe in the traditional fire-fighting system, promotes the popularization and the application of PVC-C plastic pipelines to gradually replace the original galvanized steel pipes, can obviously lighten the labor intensity and reduce the material cost, and has the advantages of material saving, space saving, easy installation and good sealing performance.
The utility model has the following technical characteristics:
a) the traditional fire fighting pipelines are designed by galvanized steel pipes, the metal tee joints are adopted when the pipelines are branched, the metal tee joints and the pipelines are in threaded connection, and threading is needed on the steel pipes during installation, so that installation labor is wasted, the cost is increased, the threaded connection is difficult to seal, and the risk of water leakage exists.
b) Along with the wide application of the PVC-C fire-fighting pipeline, when the tee joint is connected to the pipeline, the connection with the metal tee joint can be completed only by directly installing a steel pipe and a plastic pipe in a conversion way, so that the installation cost and the water leakage risk are synchronously increased; when the tee joint is arranged on the plastic pipe, the tee joint is arranged on the plastic pipe only by punching a hole on the pipe wall of the plastic pipe, encircling the hoop on the plastic pipe and enabling the connecting pipe on the hoop to be communicated with the hole.
c) The sealing ring is arranged in the annular sealing groove of the upper cover of the hoop, and when the hoop is wound on the plastic main pipe, the sealing ring in the annular sealing groove is sealed with the periphery of the hole of the plastic main pipe, so that the assembly of the sealing ring is simple, and the sealing performance is good.
d) The structural arrangement and the connection method of the tee joint are also suitable for connecting the fire-fighting system with the main water pipe being a galvanized steel pipe, and the problems that the main water pipe is the galvanized steel pipe and other pipe fittings are plastic pipe fittings in the existing system are solved.
Drawings
Fig. 1 is a schematic structural view of the utility model;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic structural view of the upper cover of the clamp of the utility model;
FIG. 4 is a bottom view of FIG. 3;
FIG. 5 is a side view of FIG. 3;
fig. 6 is a schematic structural view of the utility model sealing ring;
fig. 7 is a top view of fig. 6.
Detailed Description
Referring to fig. 1 and 2, the present invention includes a band upper cover 1, a band lower cover 2, a seal ring 3, a metal gasket 4, and a bolt nut 5.
Referring to fig. 1, 3, 4 and 5, the hoop upper cover 1 is a semi-cylindrical shell member, a connection pipe 13 penetrating through the semi-cylinder is arranged on a shell wall of the shell member, an axis of the connection pipe 13 is perpendicular to and intersects with an axis of the semi-cylinder, a convex edge 15 and an annular sealing groove 16 are arranged on an annular intersecting line of a port of the connection pipe 13 and an inner wall of the shell, first lug blocks 11 are symmetrically arranged on two sides of an outer wall of the shell, and first bolt holes 12 are arranged on the first lug blocks 11.
Referring to fig. 1 and 2, the clamp lower cover 2 is a semi-cylindrical shell member, second lug blocks 21 are symmetrically arranged on two sides of the outer wall of the shell, and second bolt holes 22 corresponding to the first bolt holes 12 are arranged on the second lug blocks 21.
Referring to fig. 1, the metal gasket 4 is four pieces, which are respectively inserted into the first bolt hole 12 of the clip upper cover 1 and the second bolt hole 22 of the clip lower cover 2.
Referring to fig. 1, the sealing ring 3 is disposed in an annular sealing groove 16 of the band cover 1.
Referring to fig. 1, the bolt and nut 5 is provided in two sets.
Referring to fig. 1, the clamp upper cover 1 and the clamp lower cover 2 are correspondingly fastened, and the bolt and nut 5 fastens the clamp upper cover 1 and the clamp lower cover 2 through the metal lining ring 4 of the first bolt hole 12 and the second bolt hole 22.
Referring to fig. 1, a pipe of a connecting pipe 13 on the clamp upper cover 1 is provided with a bearing platform 14, and the inner wall of the pipe is provided with a horn-shaped taper angle α of 2-4 degrees.
Referring to fig. 1 and 4, a positioning groove 17 is radially formed in the annular seal groove 16 in the adapter tube 13.
Referring to fig. 1, 6 and 7, a protrusion 31 is radially disposed outside the sealing ring 3.
Referring to fig. 1 and 2, in order to improve the strength of the first bolt hole 12 of the band upper cover 1 and the second bolt hole 22 of the band lower cover 2, a metal gasket 4 is embedded in the first bolt hole 12 and the second bolt hole 22, respectively, and the metal gasket 4 is formed by injection molding with the band upper cover 1 and the band lower cover 2, respectively.
Referring to fig. 1 and 2, in order to facilitate the insertion of the connection pipe 13 of the clamp upper cover 1 of the utility model with other pipelines or fittings, the inner wall of the pipe of the other pipeline or fitting is provided with a taper angle alpha in a bell mouth shape of 2-4 degrees, which is beneficial to the insertion of the utility model with other pipelines or fittings, and the connection pipe 13 is provided with a bearing platform 14, so that the insertion limit of the utility model and the pipeline during installation is facilitated, and the overflow of cold-melt glue can be blocked.
Referring to fig. 1 and 3, when the tee joint is arranged on the plastic pipe, the tee joint is arranged on the plastic pipe only by drilling a hole on the pipe wall of the plastic pipe, wrapping the hoop of the utility model on the plastic pipe, and communicating the connecting pipe of the hoop upper cover 1 with the hole. In order to ensure that the connecting pipe 13 of the clamp upper cover 1 is accurately meshed with the hole on the plastic pipe, the utility model is provided with the convex edge 15 on the annular intersecting line of the port of the connecting pipe 13 and the inner wall of the shell, and the connecting pipe of the clamp upper cover 1 is accurately meshed and communicated with the hole on the plastic pipe through the clamping connection of the convex edge 15 and the hole.
Referring to fig. 1, 4, 6 and 7, the sealing ring 3 of the present invention is a non-planar sealing ring, the generatrix of the sealing ring 3 is a intersecting line of two intersecting cylindrical bodies, in order to ensure the accurate installation of the sealing ring 3, the present invention has a positioning groove 17 in the radial direction of the annular sealing groove 16 in the adapter tube 13, and a protrusion 31 in the radial direction outside the sealing ring 3, when the sealing ring 3 is assembled, the protrusion 31 of the sealing ring 3 is aligned with the positioning groove 17 in the adapter tube 13, and the sealing ring 3 is installed in the annular sealing groove 16.

Claims (4)

1. A clamp type tee joint for a PVC-C fire-fighting plastic pipe is characterized by comprising a clamp upper cover (1), a clamp lower cover (2), a sealing ring (3), a metal lining ring (4) and a bolt and nut (5);
the clamp upper cover (1) is a semi-cylindrical shell member, a connecting pipe (13) communicated with the semi-cylinder is arranged on the shell wall of the shell member, the axis of the connecting pipe (13) is perpendicular to and intersected with the axis of the semi-cylinder, a convex edge (15) and an annular sealing groove (16) are arranged on an annular intersecting line of one port of the connecting pipe (13) and the inner wall of the shell, first lug blocks (11) are symmetrically arranged on two sides of the outer wall of the shell, and first bolt holes (12) are formed in the first lug blocks (11);
the clamp lower cover (2) is a semi-cylindrical shell member, second lug blocks (21) are symmetrically arranged on two sides of the outer wall of the shell, and second bolt holes (22) corresponding to the first bolt holes (12) are formed in the second lug blocks (21);
the sealing ring (3) is arranged in an annular sealing groove (16) of the hoop upper cover (1);
the metal lining rings (4) are four pieces and are respectively embedded in a first bolt hole (12) of the clamp upper cover (1) and a second bolt hole (22) of the clamp lower cover (2);
the number of the bolts and the nuts (5) is two;
the clamp upper cover (1) corresponds the lock with the clamp lower cover (2), and the bolt and nut (5) fastens the clamp upper cover (1) and the clamp lower cover (2) through the metal lining ring (4) of the first bolt hole (12) and the second bolt hole (22).
2. The clamp type tee joint for PVC-C fire fighting plastic pipe according to claim 1, characterized in that the inside of the pipe of the connecting pipe (13) on the clamp upper cover (1) is provided with a bearing platform (14), and the inner wall of the pipe is provided with a bell-mouth-shaped taper angle alpha of 2-4 degrees.
3. The hoop-type tee joint for PVC-C fire fighting plastic pipes as claimed in claim 1, characterized in that the inside of the annular sealing groove (16) of the adapter tube (13) is provided with positioning slots (17) in the radial direction.
4. The clamp tee for PVC-C fire fighting plastic pipes according to claim 1, characterized in that the outside of the sealing ring (3) is provided with a projection (31) in the radial direction.
CN202121823930.9U 2021-08-06 2021-08-06 Clamp type tee joint for PVC-C fire-fighting plastic pipe Active CN215335121U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121823930.9U CN215335121U (en) 2021-08-06 2021-08-06 Clamp type tee joint for PVC-C fire-fighting plastic pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121823930.9U CN215335121U (en) 2021-08-06 2021-08-06 Clamp type tee joint for PVC-C fire-fighting plastic pipe

Publications (1)

Publication Number Publication Date
CN215335121U true CN215335121U (en) 2021-12-28

Family

ID=79576026

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121823930.9U Active CN215335121U (en) 2021-08-06 2021-08-06 Clamp type tee joint for PVC-C fire-fighting plastic pipe

Country Status (1)

Country Link
CN (1) CN215335121U (en)

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