Adjustable rotary joint

Abstract

The utility model relates to the technical field of rotary joints, and discloses an adjustable rotary joint which comprises a rotor, the upper end and the lower end of the interior of the rotor are fixedly connected with large bearings, the bottoms of the large bearings are fixedly connected with small bearings, the exterior of each small bearing is fixedly connected with a stator, a spring is arranged in the rotor, and the spring is fixedly connected with the rotor. A static sealing ring is fixedly connected to the interior of the stator, hole clamps are fixedly connected to the sides, far away from each other, of the exteriors of the two large bearings, shaft clamps are fixedly connected to the sides, close to each other, of the exteriors of the two large bearings, and a movable sealing ring is rotationally connected to the exterior of the rotor. According to the utility model, the length dimension is reduced to the greatest extent, the mechanical seal main body structure is arranged in the rotating shaft, the length dimension is reduced to the greatest extent, the bearing adopts a double-bearing structure, but a size matching form is adopted, so that the space is released for the mechanical seal in the shaft, and the axial space can be saved at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary joints, in particular to an adjustable rotary joint. Background Art

[0002] An adjustable rotary joint is a mechanical device, usually used in systems that transmit fluid or power in a rotating motion, the design of this joint allows adjustment during operation to adapt to different working conditions or to ensure effective sealing.

[0003] In the prior art, in actual production applications, some adjustable rotary joints have rigid requirements on the size of the rotary joints in many devices, otherwise they cannot be installed and used. Therefore, in view of the above shortcomings, an adjustable rotary joint is proposed. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art and to propose an adjustable rotary joint, aiming to improve the problem that some adjustable rotary joints in the prior art have rigid requirements on the size of the rotary joints in actual production applications.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable rotary joint, comprising a rotor, wherein large bearings are fixedly connected to the upper and lower ends of the rotor, a small bearing is fixedly connected to the bottom of the large bearing, a stator is fixedly connected to the outside of the small bearing, a spring is arranged inside the rotor, a static sealing ring is fixedly connected to the inside of the stator, a hole card is fixedly connected to the outer sides of the two large bearings, and a shaft card is fixedly connected to the outer sides of the two large bearings.

[0006] Furthermore, a dynamic sealing ring is rotatably connected to the outside of the rotor, a dynamic ring seat is fixedly connected to the outside of the dynamic sealing ring, and a plurality of auxiliary O-rings are arranged inside the rotor.

[0007] Furthermore, the outer portion of the large bearing is fixedly connected to the outer portion of the rotor, and the outer portion of the small bearing is fixedly connected to the outer portion of the rotor.

[0008] Furthermore, one end of the spring is fixedly connected to the right inner wall of the rotor, and the other end of the spring is fixedly connected to the outside of the dynamic ring seat.

[0009] Further, the exterior of the static sealing ring contacts the exterior of the dynamic sealing ring, and the interior of the stator is rotatably connected to the exterior of the rotor.

[0010] Further, the interior of the stator contacts the exterior of the small bearing, and the interior of the stator contacts the exterior of the large bearing.

[0011] The utility model has the following beneficial effects:

[0012] In the utility model, the length dimension is minimized through the mutual cooperation of small bearings, large bearings, static sealing rings, dynamic sealing rings, springs and other structures. This is a reverse-installed mechanical seal form, in which the main structure of the mechanical seal is installed in the rotating shaft to minimize the length dimension. The bearing adopts a double-bearing structure, but adopts a large-small matching form. While freeing up space for the mechanical seal in the shaft, it can also save axial space requirements. By utilizing the radial space, the threads on the stator are moved outward, and the axial dimension is compressed through the side channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a schematic diagram of the structure of a movable ring seat of an adjustable rotary joint.

[0014] Legend:

[0015] 1. Rotor; 2. Stator; 3. Dynamic ring seat; 4. Static sealing ring; 5. Dynamic sealing ring; 6. Auxiliary O-ring; 7. Spring; 8. Small bearing; 9. Large bearing; 10. Hole card; 11. Shaft card. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] Reference Figure 1The utility model provides an embodiment: an adjustable rotary joint, including a rotor 1, the upper and lower ends of the rotor 1 are fixedly connected with large bearings 9, the outside of the large bearing 9 is fixedly connected to the outside of the rotor 1, the bottom of the large bearing 9 is fixedly connected with a small bearing 8, the small bearing 8 and the large bearing 9 respectively support the small diameter and large diameter parts of the rotor 1, the outside of the small bearing 8 is fixedly connected to the outside of the rotor 1, the outside of the small bearing 8 is fixedly connected with a stator 2, the rotor 1 and the stator 2 are the main rotating part and the stationary part of the joint, which are supported by the small bearing 8 and the large bearing 9, the rotor 1 rotates around the stator 2 through the small bearing 8 and the large bearing 9, the inside of the stator 2 is in contact with the outside of the small bearing 8, the inside of the stator 2 is in contact with the outside of the large bearing 9, the inside of the stator 2 is rotatably connected to the outside of the rotor 1, and a spring 7 is arranged inside the rotor 1, the spring 7 It is usually used in conjunction with a sealing system to provide additional sealing force to ensure that pressure is maintained between the static sealing ring 4 and the rotor 1 or the stator 2. One end of the spring 7 is fixedly connected to the right inner wall of the rotor 1, and the other end of the spring 7 is fixedly connected to the outside of the dynamic ring seat 3. The inside of the stator 2 is fixedly connected with a static sealing ring 4, and the outside of the static sealing ring 4 contacts the outside of the dynamic sealing ring 5. The outer sides of the two large bearings 9 that are far away are fixedly connected with a hole card 10, and the outer sides of the two large bearings 9 that are close to each other are fixedly connected with a shaft card 11. The hole card 10 is used to fix the rotary joint to the hole of the mechanical system, and the shaft card 11 is used to fix the position of the rotor 1 to ensure that the rotor 1 maintains the correct axial position during the rotational motion. The outside of the rotor 1 is rotatably connected to the dynamic sealing ring 5, and the outside of the dynamic sealing ring 5 is fixedly connected to the dynamic ring seat 3. A plurality of auxiliary O-rings 6 are arranged inside the rotor 1.

[0018] Working principle: When the rotary joint is started, the rotor 1 starts to rotate, and the small bearing 8 and the large bearing 9 support the stable movement. The dynamic seal ring 5 rotates with the rotor 1 and forms an effective seal with the static seal ring 4. The static seal ring 4 is embedded in the stator 2, and the dynamic seal ring 5 is embedded in the dynamic ring seat 3. The static seal ring 4 is fixed on the stator 2, and the dynamic seal ring 5 is connected to the rotor 1. The sealing surfaces of the two rings fit each other to form a closed sealing structure to prevent fluid or gas leakage. The auxiliary O-ring 6 is used to seal the gap between the dynamic ring seat 3 and the rotor 1. The auxiliary O-ring 6 can provide additional sealing protection. The spring 7 acts as a compensation to make the static seal ring 4 fit closely with the dynamic seal ring 5 to achieve a sealing effect. The small bearing 8 and the large bearing 9 provide support and guidance for the operation of the rotor 1 to ensure that the rotor 1 and the stator 2 can achieve relative rotation. The hole card 10 is used to fix the rotary joint to the hole of the mechanical system, and the shaft card 11 is used to fix the position of the rotor 1 to ensure that the rotor 1 maintains the correct axial position during the rotation.

[0019] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable rotary joint, comprising a rotor (1), characterized in that: The rotor (1) has large bearings (9) fixedly connected to the upper and lower ends thereof, the bottom of the large bearing (9) is fixedly connected to a small bearing (8), the outside of the small bearing (8) is fixedly connected to a stator (2), a spring (7) is provided inside the rotor (1), the inside of the stator (2) is fixedly connected to a static sealing ring (4), the outer sides of the two large bearings (9) that are far away are fixedly connected to hole clamps (10), and the outer sides of the two large bearings (9) that are close to each other are fixedly connected to shaft clamps (11).

2. An adjustable rotary joint according to claim 1, characterized in that: The outside of the rotor (1) is rotatably connected to a dynamic sealing ring (5), the outside of the dynamic sealing ring (5) is fixedly connected to a dynamic ring seat (3), and a plurality of auxiliary O-rings (6) are arranged inside the rotor (1).

3. The adjustable rotary joint according to claim 1, characterized in that: The outside of the large bearing (9) is fixedly connected to the outside of the rotor (1), and the outside of the small bearing (8) is fixedly connected to the outside of the rotor (1).

4. The adjustable rotary joint according to claim 2, characterized in that: One end of the spring (7) is fixedly connected to the right inner wall of the rotor (1), and the other end of the spring (7) is fixedly connected to the outside of the moving ring seat (3).

5. The adjustable rotary joint according to claim 1, characterized in that: The outside of the static sealing ring (4) is in contact with the outside of the dynamic sealing ring (5), and the inside of the stator (2) is rotatably connected to the outside of the rotor (1).

6. The adjustable rotary joint according to claim 1, characterized in that: The interior of the stator (2) is in contact with the exterior of the small bearing (8), and the interior of the stator (2) is in contact with the exterior of the large bearing (9).

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