A small size high strength rotary joint mandrel

Abstract

The utility model discloses a small size high strength's rotary joint mandrel, including the application in the mandrel main part among the rotary joint, the mandrel main part has the through -going orifice of middle pass, the mandrel main part upper and lower two ends are equipped with the reinforcing member of cooperation installation with external bearing respectively, the reinforcing member is as the insert in the mould with the mandrel main part integrated molding, the reinforcing member whole is made of alloy steel material, the mandrel main part whole is made of stainless steel material. The utility model proposes technical scheme, has designed by alloy steel at the connecting place of mandrel and bearing, and alloy steel has more excellent wear resistance than stainless steel, in the process that rotary joint rotates, can greatly reduce the wear degree of mandrel and bearing connecting place, can reduce the cost simultaneously, can also guarantee the smoothness and service life when using rotary joint.

Description

Technical Field

[0001] This utility model belongs to the field of rotary joint technology, specifically a small-sized, high-strength rotary joint mandrel. Background Technology

[0002] A rotary joint is a connector capable of 360-degree rotation and possessing excellent sealing performance. It is used to solve problems related to pipe and wire winding and can transmit fluid media such as compressed air, cooling water, hydraulic oil, and heat transfer oil. The spindle is a key component of the rotary joint. Its main function is to provide a flow channel for fluids (liquids, gases, or hot oil, etc.) while the device is rotating, and to transport the fluid from stationary pipes to the rotating equipment.

[0003] Since the mandrel is an accessory used to transport liquid media, it is generally made of stainless steel. Currently, a bearing is installed between the mandrel and the rotary joint to achieve smooth, low-friction rotation of the mandrel. However, due to the continuous microscopic or macroscopic relative motion and friction between the mandrel and the bearing, the contact surface between the mandrel and the bearing is prone to wear after long-term use, which leads to unstable subsequent assembly of the mandrel and the bearing, thus affecting the normal use of the rotary joint. In view of this, a small-size, high-strength rotary joint mandrel is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a small-sized, high-strength rotary joint mandrel in order to solve the problems mentioned above.

[0005] The technical solution adopted by this utility model is as follows: a small-sized, high-strength rotary joint mandrel, including a mandrel body used in a rotary joint, the mandrel body having a through-hole, and reinforcing members for cooperating with external bearings at the upper and lower ends of the mandrel body. The reinforcing members are integrally formed with the mandrel body in a mold as inserts. The reinforcing members are made of alloy steel, and the mandrel body is made of stainless steel.

[0006] In a preferred embodiment, the reinforcing member is arranged in a circular ring shape, and the reinforcing member and the mandrel body together form an installation space for assembling bearings.

[0007] In a preferred embodiment, the inner wall of the reinforcing member is provided with a plurality of connecting ribs extending into the mandrel body at circumferential intervals.

[0008] In a preferred embodiment, a flange with holes is integrally provided at one end of the mandrel body.

[0009] In a preferred embodiment, the mandrel body is further provided with several sets of through liquid supply channels. The liquid supply channels are arranged in an L-shape, with both ends of the liquid supply channels facing the flange and the side of the mandrel body, respectively.

[0010] In a preferred embodiment, the outer wall of the end of the liquid supply channel facing the mandrel body is recessed inward along the circumferential direction to form an annular groove.

[0011] In a preferred embodiment, the outer wall surface of the mandrel body is further provided with several sets of sealing ring grooves from top to bottom.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: an alloy steel insert is provided at the most wear-prone position between the mandrel and the bearing. Alloy steel has better wear resistance and strength than stainless steel. During the rotation of the rotary joint, it can greatly reduce the wear at the connection between the mandrel and the bearing. While ensuring the original performance of the mandrel and reducing costs, it can also ensure the smoothness and service life of the rotary joint during use. It has advantages that current products do not have and is worth promoting. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a simplified cross-sectional planar structural diagram of the present invention;

[0015] Figure 3 This is a schematic diagram of the planar structure of the reinforcing member in this utility model.

[0016] The markings in the diagram are: 100-mandrel body, 110-reinforcing member, 111-connecting rib, 120-through port, 130-liquid supply channel, 140-annular groove, and 150-sealing ring groove. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0019] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0020] Reference Figure 1-3 A small-sized, high-strength rotary joint mandrel includes a mandrel body 100 used in a rotary joint (not shown in the figure). The mandrel body 100 has a through-hole 120. The upper and lower ends of the mandrel body 100 are respectively provided with reinforcing members 110 that are installed in conjunction with external bearings (not shown in the figure). The reinforcing members 110 are integrally formed with the mandrel body 100 in a mold as inserts. The reinforcing members 110 are made of alloy steel, while the mandrel body 100 is made of stainless steel. The alloy steel insert is provided at the most wear-prone position between the mandrel body 100 and the bearing. Alloy steel has better wear resistance and strength than stainless steel. During the rotation of the rotary joint, it can greatly reduce the wear at the connection between the mandrel body 100 and the bearing, eliminating the need for thickening treatment at the connection. While ensuring the original performance of the mandrel and reducing costs, it can also ensure the smoothness of the rotary joint during use, thereby reducing the overall maintenance and replacement frequency.

[0021] In this embodiment, refer to Figure 2 and Figure 3 As shown, the reinforcing member 110 is arranged in a circular ring shape. The reinforcing member 110 and the spindle body 100 together form an installation space for assembling bearings. The inner wall of the reinforcing member 110 is provided with a plurality of connecting ribs 111 extending into the spindle body 100 at intervals along the circumference. The connecting ribs 111 of the reinforcing member 110 can increase the firmness between the reinforcing member 110 and the spindle body 100. In other embodiments, a hook-shaped structure can be provided at the end of the connecting ribs 111.

[0022] In this embodiment, the outer wall surface of the mandrel body 100 is also provided with several sets of sealing ring grooves 150 from top to bottom.

[0023] In this embodiment, refer to Figure 2As shown, the mandrel body 100 has a flange 110 with holes integrally provided at one end. The flange 110 is designed to be connected to the equipment that needs to be rotated. It can be set according to different application scenarios. The specific assembly method will not be described in detail here.

[0024] In this embodiment, refer to Figure 1 and Figure 3 As shown, the spindle body 100 is also provided with several sets of through-flow fluid supply channels 130. The fluid supply channels 130 are arranged in an L-shape. The two ends of the fluid supply channels 130 are respectively arranged facing the flange 110 and the side of the spindle body 100. The outer wall of the end of the fluid supply channel 130 facing the spindle body 100 is recessed inward along the circumferential direction to form an annular groove 140. The outer rotary joint shell is provided with a fluid supply port (not shown in the figure) connected to the annular groove 140. Through the designed fluid supply channels 130 and annular groove 140, multi-channel rotary fluid supply (such as hydraulic oil) operation can be realized in a small size range, making it more applicable to a wider range of scenarios.

[0025] In summary, compared to the traditional methods of thickening and using ceramic sleeves on the outer wall for wear protection, this invention only requires an alloy steel insert on the connection surface between the mandrel body 100 and the bearing. Alloy steel has better wear resistance and strength than stainless steel, which can greatly reduce the wear at the connection between the mandrel and the bearing. Moreover, the main body is still made of stainless steel, which can also meet the overall corrosion resistance requirements when conveying media, resulting in better performance.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A small-sized, high-strength rotary joint mandrel, comprising a mandrel body used in a rotary joint, characterized in that, The mandrel body has a through opening in the center. The upper and lower ends of the mandrel body are respectively provided with reinforcing members that are installed in conjunction with external bearings. The reinforcing members are integrally formed with the mandrel body in the mold as inserts. The reinforcing members are made of alloy steel, and the mandrel body is made of stainless steel.

2. The small-sized, high-strength rotary joint mandrel as described in claim 1, characterized in that: The reinforcing member is arranged in a circular ring structure, and the reinforcing member and the mandrel body together form an installation space for assembling bearings.

3. The small-sized, high-strength rotary joint mandrel as described in claim 2, characterized in that: The inner wall of the reinforcing member is provided with multiple connecting ribs that extend into the mandrel body at intervals along the circumference.

4. The small-sized, high-strength rotary joint mandrel as described in claim 1, characterized in that: The mandrel body has a flange with holes integrally formed at one end.

5. The small-sized, high-strength rotary joint mandrel as described in claim 4, characterized in that: The mandrel body is also provided with several sets of through liquid supply channels. The liquid supply channels are arranged in an L-shape, with both ends of the liquid supply channels facing the flange and the side of the mandrel body, respectively.

6. The small-sized, high-strength rotary joint mandrel as described in claim 5, characterized in that: The outer wall of the end of the liquid supply channel facing the mandrel body is recessed inward along the circumferential direction to form an annular groove.

7. The small-sized, high-strength rotary joint mandrel as described in claim 1, characterized in that: The outer wall surface of the mandrel body is also provided with several sets of sealing ring grooves from top to bottom.

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