Parallel rotary joint and roller bed

Abstract

The application discloses a parallel rotary joint and a roller bed, and solves the technical problem that the sealing structure of the prior art rotary joint is easy to wear and leak. The parallel rotary joint comprises a fixed column, a water inlet pipe, a water return pipe, a rotating body and a bearing; the water inlet pipe is arranged in a water inlet mounting hole and connected with the fixed column, and one end of the water inlet pipe is provided with a water inlet interface; the water return pipe is arranged in a water return mounting hole and connected with the fixed column, and one end of the water return pipe is provided with a water return interface; the axis of the water return pipe is parallel to the axis of the water inlet pipe; the first end of the rotating body is provided with more than one connecting hole; the inner wall of the rotating body is sealingly connected with the outer wall of the fixed column; and the bearing is arranged on the inner wall of the second end of the rotating body and sleeved on the outer wall of the fixed column, so that the rotating body rotates relative to the fixed column. The parallel rotary joint is less sealed as a whole, is not easy to wear and damage, thereby reducing the sealing failure caused by wear and increasing the service life of the rotary joint.

Description

Technical Field

[0001] This application belongs to the field of rotary joint technology, specifically relating to a parallel rotary joint and roller conveyor. Background Technology

[0002] After the molten steel produced in the converter is refined in the refining furnace, it needs to be cast into steel billets of different types and specifications. Cooling rollers usually introduce circulating cooling water through rotary joints to quickly remove heat from the substrate or coating.

[0003] As an indispensable component connecting rotary cooling devices to external pipelines, the sealing performance of rotary joints is one of the important factors affecting their working performance. Currently, the sealing structures between the rotating and static parts inside rotary structures are numerous and complex, and are prone to wear and damage during use, leading to seal failure, leakage, and increased maintenance difficulty and cost. Summary of the Invention

[0004] To address the technical problem that current rotary joint sealing structures are prone to wear and leakage, this application provides a parallel rotary joint and roller conveyor.

[0005] In a first aspect of this application, a parallel rotary joint is provided, comprising: The fixed column has an inlet water mounting hole and a return water mounting hole, which are arranged side by side; A water inlet pipe is provided at the water inlet mounting hole and connected to the fixed column, and one end of the water inlet pipe is provided with a water inlet interface; A return water pipe is provided at the return water mounting hole and connected to the fixed column, and a return water interface is provided at one end of the return water pipe; the axis of the return water pipe is parallel to the axis of the inlet water pipe. A rotating body has a first end and a second end arranged opposite to each other. The first end of the rotating body has one or more connecting holes for connecting with a roller conveyor. The one or more connecting holes are arranged in a circumferential array along the water inlet pipe or the water return pipe. The inner wall of the rotating body is sealed to the outer wall of the fixed column. A bearing is provided on the inner wall of the second end of the rotating body and sleeved on the outer wall of the fixed column, so that the rotating body can rotate relative to the fixed column.

[0006] In some embodiments, a sealing structure is provided at the connection between the return water pipe and the fixed column; In some embodiments, a sealing structure is provided at the connection between the water inlet pipe and the fixed column.

[0007] In some embodiments, the fixing column, the return water pipe, and the inlet water pipe are integrally formed.

[0008] In some embodiments, the inner diameter of the return water pipe is larger than the inner diameter of the inlet water pipe.

[0009] In some embodiments, the first end face of the rotating body is provided with a first sealing groove, and the parallel rotary joint is provided with a first sealing element that cooperates with the first sealing groove; And / or, one or more of the aforementioned connection holes form an annular surface, the first sealing groove is located within the annular surface, and both the water inlet pipe and the water return pipe are located within the area enclosed by the first sealing groove.

[0010] In some embodiments, the outer wall of the fixed column is provided with a second sealing groove and a second sealing member that cooperates with the second sealing groove. The second sealing member is attached to the outer wall of the rotating body to form a seal.

[0011] In some embodiments, the parallel rotary joint further includes a first retaining ring disposed on the rotating body and a second retaining ring disposed on the fixed post, the first retaining ring and the second retaining ring being used to axially limit the bearing.

[0012] In a second aspect of this application, a roller conveyor is provided, comprising: Roller body; In the aforementioned parallel rotary joint, the roller conveyor body is connected to the rotating body of the parallel rotary joint. In some embodiments, the roller conveyor further includes bolts and nuts, the roller conveyor body has mounting holes corresponding to the connecting holes, and the bolts pass through the mounting holes and connecting holes and are threadedly engaged with the nuts.

[0013] According to one or more embodiments of this application, a parallel rotary joint and roller conveyor are provided. The parallel rotary joint includes a fixed column, an inlet pipe, a return pipe, a rotating body, and a bearing. The fixed column has an inlet mounting hole and a return mounting hole, which are arranged side by side. The inlet pipe is located in the inlet mounting hole and connected to the fixed column, and one end of the inlet pipe has an inlet interface. The return pipe is located in the return mounting hole and connected to the fixed column, and one end of the return pipe has a return interface. The axis of the return pipe is parallel to the axis of the inlet pipe. The rotating body has a first end and a second end arranged opposite to each other. The first end of the rotating body has one or more connecting holes for connecting to the roller conveyor, and the one or more connecting holes are arranged circumferentially along the inlet pipe or the return pipe. The inner wall of the rotating body is sealed to the outer wall of the fixed column. The bearing is located on the inner wall of the second end of the rotating body and sleeved on the outer wall of the fixed column, so that the rotating body rotates relative to the fixed column.

[0014] Therefore, compared with the prior art which usually uses a return water channel for water return, the parallel rotary joint of this application uses a return water pipe instead of the return water channel in the prior art. The inlet and outlet water pipes do not need to rotate, only the rotating body needs to rotate. The overall sealing is less, and wear and damage are less likely to occur, thereby reducing the sealing failure and leakage caused by wear, increasing the service life of the rotary joint. Moreover, the overall structure is simple and convenient for maintenance. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of a parallel rotary joint is shown in one or more embodiments of this application.

[0016] Figure 2 It shows Figure 1 A cross-sectional view of the parallel rotary joints.

[0017] Figure 3 It shows Figure 1 A schematic diagram of the structure of the fixed column of the parallel rotary joint.

[0018] Explanation of reference numerals in the attached drawings: 100-Parallel rotary joint, 110-Fixing post, 111-Water inlet mounting hole, 112-Water return mounting hole, 113-Second seal, 120-Water inlet pipe, 130-Water return pipe, 140-Rotating body, 141-Connecting hole, 142-First seal, 150-Bearing, 151-First snap ring, 152-Second snap ring. Detailed Implementation

[0019] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] Please see Figure 1 , Figure 2 and Figure 3According to a first aspect of this application, a parallel rotary joint 100 is provided, including a fixed post 110, a water inlet pipe 120, a water return pipe 130, a rotating body 140, and a bearing 150. The fixed post 110 has a water inlet mounting hole 111 and a water return mounting hole 112, which are arranged side by side. The water inlet pipe 120 is disposed in the water inlet mounting hole 111 and connected to the fixed post 110, and one end of the water inlet pipe 120 has a water inlet interface. The water return pipe 130 is disposed in the water return mounting hole 112 and connected to the fixed post 110, and one end of the water return pipe 130 has a water inlet interface. The rotating body 140 is provided with a return water interface; the axis of the return water pipe 130 is parallel to the axis of the inlet water pipe 120; the rotating body 140 is provided with a first end and a second end arranged opposite to each other, the first end of the rotating body 140 is provided with one or more connection holes 141 for connecting with the roller conveyor, and the one or more connection holes 141 are arranged in a circumferential array along the inlet water pipe 120 or the return water pipe 130; the inner wall of the rotating body 140 is sealed to the outer wall of the fixed column 110; the bearing 150 is provided on the inner wall of the second end of the rotating body 140 and sleeved on the outer wall of the fixed column 110 so that the rotating body 140 rotates relative to the fixed column 110.

[0021] The water inlet mounting hole 111 and the water return mounting hole 112 are arranged side by side, that is, the axial directions of the water inlet mounting hole 111 and the water return mounting hole 112 are parallel to each other, and the water inlet mounting hole 111 and the water return mounting hole 112 are arranged side by side in the radial or non-radial direction.

[0022] The end of the water inlet pipe 120 away from the roller conveyor is provided with a water inlet interface. The water inlet interface is convenient to connect to an external water pipe. The interface structure is not limited and can be a threaded connection, a compression fitting, a quick-connect fitting, or a flange connection. This application does not impose any special limitations.

[0023] The end of the return water pipe 130 away from the roller conveyor is provided with a return water interface. The return water interface is convenient to connect to an external water pipe. The return water structure is not limited and can be a threaded connection, a compression fitting, a quick-connect fitting, or a flange connection. This application does not impose any special limitations.

[0024] The return water pipe 130 and the inlet water pipe 120 are arranged side by side, with the axis of the return water pipe 130 and the axis of the inlet water pipe 120 parallel to the axis of the roller conveyor. Both the return water pipe 130 and the inlet water pipe 120 are straight pipes. Compared with the bent return water channel, the water flow rate in the inlet water pipe 120 and the return water pipe 130 is faster, which facilitates the flow of cooling water and makes it less prone to blockage.

[0025] Therefore, compared with the prior art which usually uses a return water channel for water return, the parallel rotary joint 100 of this application uses a return water pipe 130 instead of the return water channel in the prior art. The inlet pipe 120 and the return water pipe 130 do not need to rotate, only the rotating body 140 needs to rotate. The overall sealing is less, and wear and damage are less likely to occur, thereby reducing the sealing failure and leakage caused by wear, increasing the service life of the rotary joint, and the overall structure is simple and convenient for maintenance.

[0026] In some embodiments, a sealing structure is provided at the connection between the return water pipe 130 and the fixed column 110; the return water pipe 130 passes through the return water installation hole 112 and is connected to the fixed column 110. Sealant can be injected at the connection to ensure that there is no gap between the return water pipe 130 and the return water installation hole 112, and to ensure that the return water cannot enter the joint between the return water pipe 130 and the fixed column 110.

[0027] In some embodiments, a sealing structure is provided at the connection between the water inlet pipe 120 and the fixing post 110. The water inlet pipe 120 passes through the water inlet mounting hole 111 and is connected to the fixing post 110. Sealant can be injected at the connection to ensure that there is no gap between the water inlet pipe 120 and the water inlet mounting hole 111, and to ensure that water cannot enter the joint between the water inlet pipe 120 and the fixing post 110.

[0028] In some embodiments, the fixing post 110, the return water pipe 130, and the inlet water pipe 120 are integrally formed. Integral forming facilitates processing and ensures the sealing effect between the return water pipe 130 and the fixing post 110, as well as the sealing effect between the inlet water pipe 120 and the fixing post 110.

[0029] In some embodiments, the inner diameter of the return water pipe 130 is larger than the inner diameter of the inlet water pipe 120. The increased flow cross-sectional area of ​​the return water pipe 130 reduces the flow velocity and pressure loss, allowing it to promptly remove the heat from the return water, thereby improving cooling efficiency.

[0030] In some embodiments, the first end face of the rotating body 140 is provided with a first sealing groove, and the parallel rotary joint 100 is provided with a first sealing member 142 that cooperates with the first sealing groove; the first sealing member 142 provides a seal for the rotating body 140 and the roller shaft end, preventing backwater from seeping out from the joint between the rotating body 140 and the roller shaft end, and the first sealing member 142 can be a rubber sealing gasket.

[0031] In some embodiments, one or more connecting holes 141 surround an annular surface, the first sealing groove is located within the annular surface, and both the water inlet pipe 120 and the water return pipe 130 are located within the area enclosed by the first sealing groove. That is, the rotating body 140 is connected to the roller conveyor through the connecting holes 141, and the first sealing member 142 can seal the joint between the rotating body 140 and the roller conveyor shaft end, preventing cooling water from seeping out from the joint between the rotating body 140 and the roller conveyor shaft end.

[0032] In some embodiments, the outer wall of the fixed column 110 is provided with a second sealing groove and a second sealing member 113 that cooperates with the second sealing groove. The second sealing member 113 is attached to the outer wall of the rotating body 140 to form a seal. The second sealing member 113 provides a seal for the rotating body 140 and the water pipe fixed column 110. The second sealing member 113 can be connected to the fixed column 110 by a positioning pin to prevent backwater from seeping out from the joint between the rotating body 140 and the fixed column 110.

[0033] In some embodiments, the parallel rotary joint 100 further includes a first retaining ring 151 disposed on the rotating body 140 and a second retaining ring 152 disposed on the fixing post 110, the first retaining ring 151 and the second retaining ring 152 serving to axially limit the bearing 150. The outer circumference of the end of the fixing post 110 is provided with a mounting groove for the first retaining ring 151, the first retaining ring 151 being fixedly installed in the mounting groove to limit the bearing 150. The end of the rotating body 140 is provided with a mounting groove for the second retaining ring 152, the second retaining ring 152 being fixedly installed in the mounting groove to limit the bearing 150.

[0034] In a second aspect of this application, a roller conveyor is provided, including a roller conveyor body and the aforementioned parallel rotary joint 100, wherein the roller conveyor body is connected to the rotating body 140 of the parallel rotary joint 100. The specific structure of the parallel rotary joint 100 is as described in the above embodiments. Since the roller conveyor adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0035] In some embodiments, the roller conveyor further includes bolts and nuts. The roller conveyor body has mounting holes corresponding to the connecting holes 141. The bolts pass through the mounting holes and the connecting holes 141 and are threadedly engaged with the nuts. This connects the shaft end of the roller conveyor body to the parallel rotary joint 100.

[0036] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0038] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0040] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A parallel rotary joint, characterized in that, include: The fixed column has an inlet water mounting hole and a return water mounting hole, which are arranged side by side; A water inlet pipe is provided at the water inlet mounting hole and connected to the fixed column, and one end of the water inlet pipe is provided with a water inlet interface; A return water pipe is provided at the return water mounting hole and connected to the fixed column, and one end of the return water pipe is provided with a return water interface; the axis of the return water pipe is parallel to the axis of the inlet water pipe. A rotating body has a first end and a second end arranged opposite to each other. The first end of the rotating body has one or more connecting holes for connecting with a roller conveyor. The one or more connecting holes are arranged in a circumferential array along the water inlet pipe or the water return pipe. The inner wall of the rotating body is sealed to the outer wall of the fixed column. A bearing is provided on the inner wall of the second end of the rotating body and sleeved on the outer wall of the fixed column, so that the rotating body can rotate relative to the fixed column.

2. The parallel rotary joint according to claim 1, characterized in that, The connection between the return water pipe and the fixed column is equipped with a sealing structure.

3. The parallel rotary joint according to claim 2, characterized in that, The connection between the water inlet pipe and the fixed column is equipped with a sealing structure.

4. The parallel rotary joint according to claim 3, characterized in that, The fixed column, the return water pipe, and the inlet water pipe are integrally formed.

5. The parallel rotary joint according to any one of claims 1-4, characterized in that, The inner diameter of the return water pipe is larger than the inner diameter of the inlet water pipe.

6. The parallel rotary joint according to any one of claims 1-4, characterized in that, The first end face of the rotating body is provided with a first sealing groove, and the parallel rotary joint is provided with a first sealing element that cooperates with the first sealing groove; And / or, one or more of the aforementioned connection holes form an annular surface, the first sealing groove is located within the annular surface, and both the water inlet pipe and the water return pipe are located within the area enclosed by the first sealing groove.

7. The parallel rotary joint according to any one of claims 1-4, characterized in that, The outer wall of the fixed column is provided with a second sealing groove and a second sealing element that cooperates with the second sealing groove. The second sealing element is attached to the outer wall of the rotating body to form a seal.

8. The parallel rotary joint according to any one of claims 1-4, characterized in that, The parallel rotary joint further includes a first retaining ring disposed on the rotating body and a second retaining ring disposed on the fixed post, the first retaining ring and the second retaining ring being used to axially limit the bearing.

9. A roller conveyor, characterized in that, include: Roller body; The parallel rotary joint according to any one of claims 1-8, wherein the roller conveyor body is connected to the rotating body of the parallel rotary joint.

10. The roller conveyor according to claim 9, characterized in that, The roller conveyor also includes bolts and nuts. The roller conveyor body has mounting holes corresponding to the connecting holes. The bolts pass through the mounting holes and connecting holes and are threadedly engaged with the nuts.

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