Movable elbow

Abstract

The utility model relates to the technical field of elbows, in particular to a movable elbow which comprises a straight pipe, an elbow pipe and a movable assembly, and the movable assembly comprises a bearing, a worm gear, a mounting frame, a worm and a connecting rod. During use, a user firstly connects a pipeline with a straight pipe, rotates the worm to drive the worm gear meshed with the worm to rotate according to the orientation of another to-be-connected pipeline, and the worm gear drives the bent pipe to rotate through the connecting rod, so that the bent pipe is aligned with the other to-be-connected pipeline, and then the pipeline is connected with the bent pipe. Fluid sequentially flows through the straight pipe and the bent pipe to change the flow direction; by arranging the bearing, the worm gear rotates more smoothly, due to the fact that the worm gear and the worm have the self-locking performance, even though the bent pipe is collided, the bent pipe cannot rotate, the bent pipe can rotate only when the worm is rotated, in this way, the orientation of the bent pipe can be adjusted, pipelines in different directions can be connected, and the practicability is high. And the use is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of elbows, in particular to a movable elbow. Background Art

[0002] A molding machine is a casting device used to manufacture sand molds. Pipes are equipped on the molding machine to convey sand bodies. When it is necessary to change the pipeline direction of the pipes, elbows are required to connect two pipes in different directions. However, the elbows are prone to damage under the high-speed impact and friction of fluids.

[0003] Currently, the prior art CN204922339U discloses an elbow, which includes an inlet end and an outlet end respectively connected to an outer pipeline. An arc-shaped pipeline is connected between the inlet end and the outlet end, and the outer layer of the arc-shaped pipeline is a cast steel layer, and a wear-resistant layer is arranged on the inner surface of the cast steel layer. Since the outer layer of the arc-shaped pipeline is a cast steel layer and the inner layer is a wear-resistant layer, the cast steel layer has good impact toughness, and the wear-resistant layer can improve the wear resistance of the elbow. Therefore, this elbow with a composite structure combines the respective advantages of the two, enhances the wear resistance, corrosion resistance and impact toughness inside the elbow, can meet the requirements of the wear-resistant and corrosion-resistant properties of the elbow under extreme working conditions such as high pressure and high impact, thus greatly prolonging the service life of the elbow, reducing the replacement frequency of the elbow during the operation process, and thereby reducing the production cost.

[0004] However, adopting the above method, the orientation of the outlet end of the elbow is fixed and cannot be adjusted according to needs, which is inconvenient to use. Summary of the Invention

[0005] The purpose of the utility model is to provide a movable elbow, aiming to solve the problem that the orientation of the outlet end of the existing elbow is fixed and cannot be adjusted according to needs, which is inconvenient to use.

[0006] To achieve the above purpose, the utility model provides a movable elbow, which includes a straight pipe, a bent pipe and a movable component. One end of the bent pipe is inside the straight pipe, and the movable component includes a bearing, a worm gear, a mounting frame, a worm and a connecting rod;

[0007] The inner ring of the bearing is fixedly connected to the straight pipe and is located on the side of the straight pipe; the worm gear is fixedly connected to the outer ring of the bearing and is located on the side of the bearing; the mounting frame is fixedly connected to the straight pipe and is located on the side of the straight pipe; the worm is rotatably connected to the mounting frame and meshes with the worm gear; the connecting rod is fixedly connected to the bent pipe and is fixedly connected to the worm gear and is located between the bent pipe and the worm gear.

[0008] Wherein, the movable component further includes a square column, a connecting arm, and a locking rod; the square column is slidably connected to the worm and is located inside the worm; the connecting arm is fixedly connected to the square column and is located on the side of the square column; the locking rod is fixedly connected to the connecting arm and is located on the side of the connecting arm; the mounting bracket has a plurality of locking holes, and the plurality of locking holes are respectively located on the side of the mounting bracket.

[0009] Wherein, the movable component further includes a first spring; the first spring is fixedly connected to the worm and is also fixedly connected to the square column, and is located between the worm and the square column.

[0010] Wherein, the movable component further includes a limiting ring and a rubber ring; the limiting ring is fixedly connected to the straight pipe and is located inside the straight pipe; the rubber ring is located between the limiting ring and the elbow pipe.

[0011] Wherein, the movable component further includes a plurality of second springs; the plurality of second springs are respectively fixedly connected to the limiting ring and are also respectively fixedly connected to the rubber ring, and are respectively located between the limiting ring and the rubber ring.

[0012] For a movable elbow of the present utility model, during use, the user first connects a pipe to the straight pipe. According to the orientation of another pipe to be connected, by rotating the worm, the worm drives the engaged worm wheel to rotate. The worm wheel drives the elbow pipe to rotate through the connecting rod, so that the elbow pipe is aligned with the other pipe to be connected. Then, this pipe is connected to the elbow pipe, and the fluid flows through the straight pipe and the elbow pipe in sequence to change the flow direction. By providing the bearing, the rotation of the worm wheel is smoother. Since the worm wheel and the worm have self-locking property, even when the elbow pipe is hit, the elbow pipe will not rotate. Only when the worm is rotated will the elbow pipe rotate. In this way, the orientation of the elbow pipe can be adjusted, enabling the connection of pipes in different directions and being more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0014] Figure 1 It is a schematic structural diagram of the whole of the present utility model.

[0015] Figure 2 It is a schematic structural diagram of another angle of the whole of the present utility model.

[0016] Figure 3 It is a front sectional view of the whole of the present utility model.

[0017] Figure 4 It is a schematic structural diagram of the mounting bracket, worm, square column, connecting arm, locking rod and multiple second springs of the present utility model.

[0018] Figure 5 It is a side sectional view of the mounting bracket, worm, square column, connecting arm, locking rod and multiple second springs of the present utility model.

[0019] 101 - straight pipe, 102 - elbow pipe, 103 - movable assembly, 104 - bearing, 105 - worm gear, 106 - mounting bracket, 107 - worm, 108 - connecting rod, 109 - square column, 110 - connecting arm, 111 - locking rod, 112 - locking hole, 113 - first spring, 114 - limiting ring, 115 - rubber ring, 116 - second spring. Detailed implementation manner

[0020] Please refer to Figures 1 - 5 , wherein, Figure 1 It is a schematic structural diagram of the whole of the present utility model, Figure 2 It is a schematic structural diagram of the whole of the present utility model from another angle, Figure 3 It is a front sectional view of the whole of the present utility model, Figure 4 It is a schematic structural diagram of the mounting bracket, worm, square column, connecting arm, locking rod and multiple second springs of the present utility model, Figure 5 It is a side sectional view of the mounting bracket, worm, square column, connecting arm, locking rod and multiple second springs of the present utility model.

[0021] The present utility model provides a movable elbow, including a straight pipe 101, an elbow pipe 102 and a movable assembly 103. The movable assembly 103 includes a bearing 104, a worm gear 105, a mounting bracket 106, a worm 107, a connecting rod 108, a square column 109, a connecting arm 110, a locking rod 111, a first spring 113, a limiting ring 114, a rubber ring 115 and multiple second springs 116; by the foregoing solution, the problem that the orientation of the outlet end of the existing elbow is fixed and cannot be adjusted according to needs, resulting in inconvenience during use, is solved.

[0022] For this specific implementation manner, one end of the elbow pipe 102 is inside the straight pipe 101. Two pipes with different pipeline directions are respectively connected to the elbow pipe 102 and the straight pipe 101, and the fluid can change its flow direction by flowing through the straight pipe 101 and the elbow pipe 102 in sequence.

[0023] Among them, the inner ring of the bearing 104 is fixedly connected to the straight pipe 101 and is located on the side of the straight pipe 101; the worm gear 105 is fixedly connected to the outer ring of the bearing 104 and is located on the side of the bearing 104; the mounting bracket 106 is fixedly connected to the straight pipe 101 and is located on the side of the straight pipe 101; the worm 107 is rotatably connected to the mounting bracket 106 and meshes with the worm gear 105; the connecting rod 108 is fixedly connected to the elbow pipe 102 and is fixedly connected to the worm gear 105 and is located between the elbow pipe 102 and the worm gear 105. The mounting bracket 106 is used to support the worm 107. One end of the straight pipe 101 serves as a fluid inlet end, and one end of the elbow pipe 102 serves as a fluid outlet end. When in use, the user first connects a pipe to the straight pipe 101. According to the orientation of another pipe to be connected, by rotating the worm 107, the worm 107 drives the meshing worm gear 105 to rotate. The worm gear 105 drives the elbow pipe 102 to rotate through the connecting rod 108, so that the elbow pipe 102 is aligned with another pipe to be connected. Then, this pipe is connected to the elbow pipe 102, and the fluid can change the flow direction by flowing through the straight pipe 101 and the elbow pipe 102 in sequence; by setting the bearing 104, the rotation of the worm gear 105 is smoother. Since the worm gear 105 and the worm 107 have self-locking properties, even if the elbow pipe 102 is hit, the elbow pipe 102 will not rotate. Only when the worm 107 is rotated will the elbow pipe 102 rotate. In this way, the orientation of the elbow pipe 102 can be adjusted, enabling the connection of pipes in different directions and being more convenient to use.

[0024] Secondly, the square column 109 is slidably connected to the worm 107 and is located inside the worm 107; the connecting arm 110 is fixedly connected to the square column 109 and is located on the side of the square column 109; the locking rod 111 is fixedly connected to the connecting arm 110 and is located on the side of the connecting arm 110; the mounting bracket 106 has a plurality of locking holes 112, and the plurality of locking holes 112 are respectively located on the side of the mounting bracket 106. Inserting the locking rod 111 into the locking hole 112 on the mounting bracket 106 can limit the rotation of the locking rod 111 and the connecting arm 110, thereby restricting the rotation of the square column 109 and the worm 107, and preventing the elbow pipe 102 from rotating due to the rotation of the worm gear 105 after the position of the elbow pipe 102 is adjusted.

[0025] Meanwhile, the first spring 113 is fixedly connected to the worm 107 and the square column 109, and is located between the worm 107 and the square column 109. The first spring 113 provides a traction force to the square column 109, so that the square column 109 will not move without being pulled by an external force.

[0026] In addition, the limiting ring 114 is fixedly connected to the straight pipe 101 and is located inside the straight pipe 101; the rubber ring 115 is located between the limiting ring 114 and the elbow pipe 102. The limiting ring 114 is used to limit the position of the rubber ring 115, and the rubber ring 115 can be used to improve the connection tightness between the straight pipe 101 and the elbow pipe 102 and prevent the transported fluid from leaking.

[0027] Finally, a plurality of second springs 116 are respectively fixedly connected to the limiting ring 114 and the rubber ring 115, and are respectively located between the limiting ring 114 and the rubber ring 115. The second springs 116 are in a compressed state between the limiting ring 114 and the rubber ring 115, and the elastic potential energy of the second springs 116 is used to make the rubber ring 115 abut against the elbow pipe 102, improving the connection tightness between the straight pipe 101 and the elbow pipe 102.

[0028] When using the utility model, the user first connects a pipeline to the straight pipe 101. According to the orientation of another pipeline to be connected, the locking rod 111 is first pulled out from the locking hole 112. The locking rod 111 drives the square column 109 to move through the connecting arm 110. At this time, the first spring 113 is stretched. Then, the worm 107 is rotated. The worm 107 drives the engaged worm wheel 105 to rotate. The worm wheel 105 drives the elbow pipe 102 to rotate through the connecting rod 108, so that the elbow pipe 102 is aligned with another pipeline to be connected. Subsequently, the locking rod 111 is released. The locking rod 111 approaches the mounting bracket 106 and is inserted into the locking hole 112 under the drive of the first spring 113. Then, the pipeline to be connected is connected to the elbow pipe 102. Fluids can flow through the straight pipe 101 and the elbow pipe 102 in sequence to change the flow direction. The second spring 116 is in a compressed state between the limiting ring 114 and the rubber ring 115. The elastic potential energy of the second spring 116 is used to make the rubber ring 115 tightly abut against the elbow pipe 102, improving the connection tightness between the straight pipe 101 and the elbow pipe 102. By providing the bearing 104, the rotation of the worm wheel 105 is smoother. Since the worm wheel 105 and the worm 107 have self-locking properties, even if the elbow pipe 102 is collided, the elbow pipe 102 will not rotate. Only when the worm 107 is rotated will the elbow pipe 102 rotate. In this way, the orientation of the elbow pipe 102 can be adjusted, enabling the connection of pipelines in different directions and being more convenient to use.

[0029] The above-disclosed are only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. An articulated elbow, comprising a straight pipe and a bent pipe, one end of the bent pipe being inside the straight pipe, characterized in that, it further comprises an articulated assembly; The articulated assembly includes a bearing, a worm gear, a mounting bracket, a worm and a connecting rod; The inner ring of the bearing is fixedly connected to the straight pipe and is located on the side of the straight pipe; the worm gear is fixedly connected to the outer ring of the bearing and is located on the side of the bearing; the mounting bracket is fixedly connected to the straight pipe and is located on the side of the straight pipe; the worm is rotatably connected to the mounting bracket and meshes with the worm gear; the connecting rod is fixedly connected to the bent pipe and is fixedly connected to the worm gear and is located between the bent pipe and the worm gear.

2. The articulated elbow according to claim 1, characterized in that, The articulated assembly further includes a square column, a connecting arm and a locking rod; the square column is slidably connected to the worm and is located inside the worm; the connecting arm is fixedly connected to the square column and is located on the side of the square column; the locking rod is fixedly connected to the connecting arm and is located on the side of the connecting arm; the mounting bracket has a plurality of locking holes, and the plurality of locking holes are respectively located on the side of the mounting bracket.

3. The articulated elbow according to claim 2, characterized in that, The articulated assembly further includes a first spring; the first spring is fixedly connected to the worm and is fixedly connected to the square column and is located between the worm and the square column.

4. The articulated elbow according to claim 3, characterized in that, The articulated assembly further includes a limiting ring and a rubber ring; the limiting ring is fixedly connected to the straight pipe and is located inside the straight pipe; the rubber ring is located between the limiting ring and the bent pipe.

5. The articulated elbow according to claim 4, characterized in that, The articulated assembly further includes a plurality of second springs; the plurality of second springs are respectively fixedly connected to the limiting ring and are respectively fixedly connected to the rubber ring and are respectively located between the limiting ring and the rubber ring.

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