The bell-and-spigot pipe pipe connecting of the fastening pipe box of band wedge shape
Technical field
The utility model belongs to pipe joint, is specifically related to a kind of bell-and-spigot pipe pipe connecting.
Background technique
At present in the water supply network, pipeline interconnects or pipeline connecting direction changes, sometimes need to use piping attachment, annex comprises that pipeline two leads to the curved link in fitting, branch pipe tee connection link, pipeline four-way link or pipeline angle etc., piping attachment on the water supply network is embedded in underground at present, it is to adopt flange to be connected with bolt that present most of valve is connected with pipeline, and such is rigidly connected, and the weakness that can not reduce stress is arranged.For example: because the stress that road load or severe cold cause causes underground type fire hydrant or valve accessories to be broken.In addition, because of valve accessories connect need be on pipeline welded flange, so the corrosion-inhibiting coating of pipeline is destroyed, the etching problem that flange connects is a well-known difficult problem.
Summary of the invention
The purpose of this utility model is to provide a kind of bell-and-spigot pipe pipe connecting with fastening pipe box of quick connection difficult drop-off, to address the above problem.
The technical solution of the utility model is: the bell-and-spigot pipe pipe connecting of the fastening pipe box of band wedge shape, it comprises the pipe joint main body, the medium inducer of pipe joint main body and/or the inwall of media outlet section are provided with seal groove, be provided with Sealing in the seal groove, the end face connecting tube locking device of the medium inducer end face of pipe joint main body and/or media outlet section.
Described pipeline locking device comprises the trim ring that is connected with the end face of the medium inducer end face of pipe joint main body and/or media outlet section, be provided with the lock ring cover in the trim ring endoporus, the trim ring endoporus is the frustum shape, the side of lock ring cover is the frustum shape, forms the band wedge between the side of trim ring endoporus and lock ring cover.
Described pipe joint is the link that pipeline interconnects or pipeline connecting direction changes that is used for that existing pipeline two leads to the curved link in fitting, branch pipe tee connection link, pipeline four-way link or pipeline angle or other.
The socket pipe member of band wedge shape fastening pipe box is compared with flange connections spare, and is easy for installation, and reduces welded flange on pipeline and the pipeline coatings that causes is destroyed, produces corrosion to leak; This pipe fitting also has the fastening pipe box of wedge shape, can will insert firmly locking of pipeline, prevents that pipeline breaks away from.
Description of drawings
The socket joint pipeline two of the fastening pipe box of Fig. 1 band wedge shape leads to the fitting schematic representation.
The socket joint pipeline three-way connector schematic representation of the fastening pipe box of Fig. 2 band wedge shape.
The link schematic representation is bent at the socket joint pipeline angle of the fastening pipe box of Fig. 3 band wedge shape.
The socket joint pipeline two of the fastening pipe box of the one-sided band wedge shape of Fig. 4 leads to the fitting schematic representation.
Fig. 5 lock ring cover schematic representation.
Embodiment
The pipe joint of the utility model indication is to be used for the link that pipeline interconnects or pipeline connecting direction changes.It comprises that pipeline two leads to the curved link in fitting, branch pipe tee connection link, pipeline four-way link or pipeline angle etc. but is not limited to above-mentioned link.
The socket joint pipeline two of the fastening pipe box of band wedge shape leads to fitting and is illustrated
As shown in Figure 1, two lead to fitting main body 1 medium inducer 5 and the inwall of media outlet section 6 be provided with seal groove 7, be provided with Sealing 2 in the seal groove 7, Sealing 2 is an elastomer seal, can be rubber seal.The internal diameter relative duct size external diameter of seal ring 2 is less, so the seal for pipe joints circle has certain decrement, thereby forms sealing.The end face of medium inducer 5 and media outlet section 6 is connected trim ring 4 by bolt, is provided with lock ring cover 3 in trim ring 4 endoporus, and the trim ring endoporus is the frustum shape, and the side of lock ring cover is the frustum shape, forms the band wedge between the side of trim ring endoporus and lock ring cover.Lock ring overlaps 3 hole walls and is provided with fastening teeth 8, pipeline 9 tightly can be waled like this, and lock ring cover 3 is trip ring (as shown in Figure 5).When clamping bolt, trim ring 4 stressed motions, the 3 stressed inside contractions of wedge shape adapter sleeve are firmly embraced pipeline, prevent that pipeline 9 from leading in the fitting main body 1 from two.
Bell and spigot frame and pipeline locking device can two-way settings on pipe joint, as shown in Figure 1, also can unidirectional setting as shown in Figure 4, the other end adopts flange to connect.
Bell and spigot frame in the setting of branch pipe tee connection link is identical with the pipeline locking device structure with the bell and spigot frame that pipeline locking device and pipeline two lead to the fitting setting, it is to be provided with bell and spigot frame and pipeline locking device structure on three directions of medium, as shown in Figure 2.
The structure of bell and spigot frame and pipeline locking device curved link at the pipeline angle as shown in Figure 3, to lead to the bell and spigot frame that fitting is provided with identical with the pipeline locking device structure with pipeline two.