Disclosure of utility model
The utility model aims to solve the problems that concentric reducing pipes and eccentric reducing pipes cannot be used alternately, and the installation and purchase are troublesome in the prior art.
The utility model provides a reducing pipe with a variable circle center, which comprises a large-diameter pipe, a small-diameter pipe and a limiting assembly, wherein the axis of the large-diameter pipe is parallel to the axis of the small-diameter pipe, the large-diameter pipe is communicated with the small-diameter pipe through a reducing connecting piece, the reducing connecting piece is used for adjusting the distance between the axis of the large-diameter pipe and the axis of the small-diameter pipe, and the limiting assembly is used for locking the distance between the axis of the large-diameter pipe and the axis of the small-diameter pipe.
The variable-diameter connecting piece comprises a plastic tapered corrugated pipe, wherein the large-caliber end of the plastic tapered corrugated pipe is connected with the large-diameter pipe, and the small-caliber end of the plastic tapered corrugated pipe is connected with the small-diameter pipe.
Specifically, the plastic tapered corrugated pipe is a metal tapered corrugated pipe.
The limiting assembly comprises a first limiting piece, a second limiting piece and a connecting rod, wherein the first limiting piece is arranged on the outer wall of the end, connected with the large-diameter pipe, of the variable-diameter connecting piece, the second limiting piece is arranged on the outer wall of the end, connected with the small-diameter pipe, of the variable-diameter connecting piece, one end of the connecting rod is rotationally connected with the first limiting piece, the other end of the connecting rod is slidably connected with the second limiting piece, and a locking piece for fixing the relative position of the connecting rod and the second limiting piece is arranged on the second limiting piece.
The locking piece comprises a nut, one end of the connecting rod is provided with threads matched with the nut, the second limiting piece is provided with a sliding groove, and one end of the connecting rod penetrates through the sliding groove to be connected with the nut.
The ball socket is arranged on the first limiting part, a ball head matched with the ball socket is arranged at one end of the connecting rod, and the connecting rod is rotationally connected with the first limiting part through the ball head and the ball socket.
Specifically, one end of the connecting rod is rotatably connected with the first limiting part through a hinge.
Specifically, the first limiting piece and the second limiting piece are of annular structures and are sleeved at two ends of the reducing connecting piece respectively.
The limiting assembly comprises a plurality of connecting rods, and the connecting rods are circumferentially arranged at intervals on the periphery of the reducing connecting piece.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
The reducing pipe with the changeable circle center is simple in structure and convenient to operate, free conversion from the concentric reducing pipe to the eccentric reducing pipe can be realized only by manual pushing and pulling, the free conversion is convenient and efficient, the requirements of different working conditions are met, the problem that the concentric reducing pipe and the eccentric reducing pipe cannot be used alternately is solved, the problem of misuse and misuse when unskilled workers install the reducing pipe is solved, meanwhile, the concentric pipe or the eccentric pipe is not needed to be distinguished specially when engineering purchasing, and the installation and purchasing become simple and efficient.
The present utility model will be described in further detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic view of a variable diameter pipe with a variable center of circle provided by the utility model in a concentric form.
Fig. 2 is a schematic view of the variable diameter pipe with a variable center of circle provided by the utility model in an eccentric state.
Fig. 3 is a schematic diagram of a connecting end of a connecting rod and a second limiting member of a reducing pipe with a variable center.
Fig. 4 is a schematic diagram of a connection end of a first limiting member and a connecting rod of a reducing pipe with a variable center.
The reference numerals indicate that 1, a large-diameter pipe, 2, a small-diameter pipe, 3, a variable-diameter connecting piece, 4, a first limiting piece, 401, a ball socket, 5, a connecting rod, 501, a ball head, 6, a second limiting piece, 601, a sliding groove, 7 and a locking piece.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature, and in the description of the utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
Referring to fig. 1-2, the utility model provides a reducing pipe with a variable center, which comprises a large-diameter pipe 1, a small-diameter pipe 2 and a limiting assembly, wherein the axis of the large-diameter pipe 1 is parallel to the axis of the small-diameter pipe 2, the large-diameter pipe 1 is communicated with the small-diameter pipe 2 through a reducing connecting piece 3, the reducing connecting piece 3 is used for adjusting the distance between the axis of the large-diameter pipe 1 and the axis of the small-diameter pipe 2, and the limiting assembly is used for locking the distance between the axis of the large-diameter pipe 1 and the axis of the small-diameter pipe 2. The initial state of the variable-circle-center reducing pipe is preferably a state that the centers of circles are concentric and the axes of the large pipe and the small pipe are collinear. When the concentric reducer pipe is used, the distance between the axis of the large-diameter pipe 1 and the axis of the small-diameter pipe 2 is adjusted through the reducing connecting piece 3, so that the axes of the large-diameter pipe 1 and the small-diameter pipe 2 are overlapped or deviated, then the relative positions of the axis of the large-diameter pipe 1 and the axis of the small-diameter pipe 2 are locked through the limiting assembly, the distance between the two axes is fixed, and the use requirement of the concentric reducer pipe or the eccentric reducer pipe is met.
Specifically, the reducing connecting piece 3 comprises a plastic tapered corrugated pipe, wherein the large-caliber end of the plastic tapered corrugated pipe is connected with the large-caliber pipe 1, and the small-caliber end of the plastic tapered corrugated pipe is connected with the small-caliber pipe 2. The caliber of two ends of the plastic tapered corrugated pipe is matched with the caliber of the large-diameter pipe 1 and the caliber of the small-diameter pipe 2. The plastic tapered corrugated pipe is combined with the plasticity, and the free transformation of the circle center of the plastic tapered corrugated pipe is realized through external force pushing and pulling, so that the axial positions of the large-diameter pipe 1 and the small-diameter pipe 2 connected with the two ends of the plastic tapered corrugated pipe are changed. When the requirement is in an eccentric reducing pipe form, as shown in fig. 2, the plastic tapered corrugated pipe is pushed, and the good expansion compensation performance and plasticity of the plastic tapered corrugated pipe are utilized until the single-side pipe wall of the plastic tapered corrugated pipe is collinear with the single-side pipe walls of the large-diameter pipe 1 and the small-diameter pipe 2, so that a stable eccentric pipe structure is formed. The spacing assembly is then adjusted to lock the moldable tapered bellows in this configuration.
The plastic tapered corrugated pipe is preferably a metal tapered corrugated pipe, the external corrugated structure of the plastic tapered corrugated pipe has the functions of elongation and compression compensation, the free transformation of the circle center of the pipeline can be realized through external force pushing and pulling, and the stability of the transformation form of the reducing pipe can be enhanced by combining the plasticity of metal materials.
The number of the plastic tapered corrugated pipes between the large-diameter pipe 1 and the small-diameter pipe 2 is designed according to actual conditions, when the pipe diameters of the large-diameter pipe 1 and the small-diameter pipe 2 are large in difference, namely the diameter-changing range is large, in order to increase the stability of water flow in the pipeline and reduce head loss, a plurality of sections of plastic tapered corrugated pipes can be adopted, so that the smoothness of the water flow is improved. When the pipe diameters of the large-diameter pipe 1 and the small-diameter pipe 2 are smaller in difference, namely the diameter-changing range is smaller, only one section of plastic tapered corrugated pipe can be adopted to connect the large-diameter pipe and the small-diameter pipe 2, so that the purpose of simplifying the reducing pipe parts is achieved.
In a refined embodiment, the limiting assembly comprises a first limiting piece 4, a second limiting piece 6 and a connecting rod 5, wherein the first limiting piece 4 is arranged on the outer wall of the end, connected with the large-diameter pipe 1, of the variable-diameter connecting piece 3, the second limiting piece 6 is arranged on the outer wall of the end, connected with the small-diameter pipe 2, of the variable-diameter connecting piece 3, one end of the connecting rod 5 is rotatably connected with the first limiting piece 4, the other end of the connecting rod 5 is slidably connected with the second limiting piece 6, and a locking piece 7 for fixing the relative position of the connecting rod 5 and the second limiting piece 6 is arranged on the second limiting piece 6. Before use, the locking piece 7 is released, so that one end of the connecting rod 5 can slide on the second limiting piece 6 freely. As shown in fig. 1-2, after the variable diameter connecting piece 3 is adjusted to a required position, the connecting rod 5 rotates to a position parallel to the corresponding side wall of the variable diameter connecting piece 3, the connecting rod 5 is fixed by the locking piece 7, the end part of the connecting rod 5 is limited to slide on the second limiting piece 6, the connecting rod 5 is kept at a position parallel to the corresponding side wall of the variable diameter connecting piece 3, and the deformation resistance of the variable diameter connecting piece 3 is improved by the anchoring action of the limiting component.
Optionally, the locking piece 7 comprises a nut, one end of the connecting rod 5 is provided with threads matched with the nut, the second limiting piece 6 is provided with a chute 601, and one end of the connecting rod 5 penetrates through the chute 601 to be connected with the nut. Before use, the connection between the nut and the connecting rod 5 is released, so that the end part of the connecting rod 5 can slide in the sliding groove 601, and after the connecting rod 5 is adjusted to a proper position, the nut is screwed, so that the end part of the connecting rod 5 is fixed on the second limiting piece 6. The extending line of the length direction of the chute 601 preferably passes through the center of the cross section of the reducing connector 3.
Specifically, a ball socket 401 is arranged on the first limiting part 4, a ball head 501 matched with the ball socket 401 is arranged at one end of the connecting rod 5, and the connecting rod 5 is rotationally connected with the first limiting part 4 through the ball head 501 and the ball socket 401.
Optionally, one end of the connecting rod 5 is rotatably connected with the first limiting part 4 through a hinge. The hinge mounting direction is determined according to the rotation direction required during use. Other feasible rotation connection structures can be adopted between the first limiting piece 4 and the connecting rod 5, and the limitation is not limited.
In order to further improve the deformation resistance, as shown in fig. 3-4, the first limiting member 4 and the second limiting member 6 are both in annular structures and are respectively sleeved at two ends of the reducing connecting member 3. The limiting assembly comprises a plurality of connecting rods 5, and the connecting rods 5 are circumferentially arranged at intervals on the periphery of the reducing connecting piece 3. The variable diameter connector 3 is limited from a plurality of directions.
In another embodiment, the first limiting member 4 is detachably mounted on the outer diameter of the end, connected to the variable diameter connecting member 3, of the large diameter pipe 1, and the second limiting member 6 is detachably mounted on the outer diameter of the end, connected to the variable diameter connecting member 3, of the small diameter pipe 2. After the large diameter pipe 1, the variable diameter connecting piece 3 and the small diameter pipe 2 are adjusted to the required eccentric or concentric state, the first limiting piece 4 and the second limiting piece 6 are respectively arranged on the large diameter pipe 1 and the small diameter pipe 2, the connecting rod 5 is adjusted, the variable diameter connecting piece 3 is locked in the current state, namely, the positions of the axis of the large diameter pipe 1 and the axis of the small diameter pipe 2 are locked, and the eccentric or concentric state is maintained.
The foregoing examples are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model, and all designs that are the same or similar to the present utility model are within the scope of the present utility model.