Improved rotary joint

Abstract

The utility model relates to the technical field of rotary joints, in particular to an improved rotary joint which comprises a shaft seat, a shaft sleeve and a blocking cover, a high-temperature-resistant composite sealing piece is fixed in the shaft seat, a cavity is defined by the shaft seat, the shaft sleeve and the blocking cover, a bearing is fixed in the cavity, and the bearing is connected with the shaft seat. The outer side of one end of the shaft sleeve is further fixedly provided with a stopping part used for preventing the rotating connector from axially moving, the outer side of the stopping part is further provided with a pressing ring, and the two outer sides of the pressing ring are fixedly connected with the stopping part and the shaft seat in an abutting mode respectively. By the adoption of the technical scheme, the rotary joint can have good sealing performance in the high-temperature and high-pressure environment, and the situation that the service life of the rotary joint is shortened due to high-temperature burning loss is avoided.

Description

Technical Field

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

[0002] A rotary joint is a device used to connect rotating equipment and fixed pipes and can transmit media (such as fluids, gases, etc.) between the two. In many industrial fields, such as papermaking, printing, rubber, plastics, textiles, printing and dyeing, chemical fiber, steel, metallurgy and other industries, rotary joints are often used to transmit steam, water, oil, air and other media to meet the needs of production processes.

[0003] In recent years, with the development of rotary technology, different rotary joints have emerged continuously. In production applications, abnormal problems with large performance differences are often encountered, such as joint jamming, seal damage, high temperature scalding and other abnormalities, which bring certain adverse effects to people's use. Therefore, it is necessary to propose an improved rotary joint. Summary of the invention

[0004] The utility model provides an improved rotary joint, which is used to solve the technical problems of poor sealing and high-temperature scalding of the existing rotary joints.

[0005] The utility model provides an improved rotary joint, comprising a shaft seat, a shaft sleeve and a baffle cover, wherein a high-temperature resistant composite seal is fixed in the shaft seat, the shaft seat, the shaft sleeve and the baffle cover together form a cavity, a bearing is fixed in the cavity, a resisting component for preventing the rotary joint from axial movement is also fixed on the outer side of one end of the shaft sleeve, a pressure ring is also provided on the outer side of the resisting component, and the two outer sides of the pressure ring are respectively abutted and fixed to the resisting component and the shaft seat.

[0006] The principle and beneficial effects of the utility model are:

[0007] In this technical solution, the shaft seat, shaft sleeve, cover and bearing together form a rotary joint, which makes the design structure of the rotary joint simple, easy to disassemble and assemble, and convenient to maintain and replace, reducing maintenance costs and time. At the same time, this technical solution not only ensures the sealing performance of the rotary joint in a high temperature and high pressure environment, reduces the risk of leakage and failure, but also improves the strength of the rotary joint body connection by setting a multi-channel sealing protection structure, that is, setting a cover, a pressure ring and a high temperature resistant composite seal.

[0008] The rotary joint in the technical solution can be adjusted and fixed according to different pipe sizes, which improves practicality and adaptability and can be flexibly used in pipe systems of different specifications and types. That is, the high-temperature resistant composite seal and the retaining cover provided in the technical solution can be adjusted according to actual needs to ensure the sealing effect under different pipe sizes and pressure conditions. At the same time, the retaining ring can also adjust its installation position and tightening degree according to the requirements of different pipe sizes and working environments, thereby effectively adjusting the position and sealing effect of the sealing component.

[0009] In addition, the utility model can also better fix the components inside the rotary joint by providing a resisting component, prevent the rotary joint from being displaced or loosened during use, ensure that the components can fit closely, and also enhance the sealing performance.

[0010] Furthermore, two bearings are provided, which are respectively located at the two ends of the cavity. By providing two bearings, the load and rotation torque of the shaft can be shared, the load of a single bearing can be reduced, and the stability and load-bearing capacity of the entire rotary joint can be improved. At the same time, the distribution of the two bearings can also more evenly share the friction during the rotation process, thereby reducing friction and wear and extending the service life of the rotary joint.

[0011] Furthermore, a stopper sleeve is included, and the stopper sleeve is arranged in the cavity, and the two ends of the stopper sleeve are respectively fixed to the outer rings of the two bearings. The stopper sleeve can effectively protect the bearings, and can also help fix the position of the bearings, prevent the axial movement of the bearings during the rotation process, ensure that the bearings are always in the correct working position, and maintain the stability and reliability of the rotary joint. At the same time, the stopper sleeve can also serve as an auxiliary seal to prevent external contaminants from entering the bearing area and enhance the sealing performance of the entire rotary joint.

[0012] Furthermore, the shaft seat, cover, retaining ring and retaining sleeve are made of high temperature and high pressure resistant metal materials. In this technical solution, the shaft seat, cover, retaining ring and retaining sleeve are made of high temperature and high pressure resistant metal materials, which can significantly improve the high temperature resistance, high pressure resistance, corrosion resistance, high strength and sealing performance of the improved rotary joint.

[0013] Furthermore, the pressure ring is made of graphite material.

[0014] Furthermore, a bolt is included, and one end of the blocking cover is connected and fixed to the shaft seat by the bolt, and the adjacent end of the blocking cover fixed to the shaft seat is abutted and fixed to the shaft sleeve.

[0015] Furthermore, a fastener is detachably connected to one side of the bolt, and the fastener is a tightening nut. By providing the fastener, the connection between the shaft seat and the blocking cover can be made more secure, and the looseness between the two structures caused by long-term use can be avoided, thereby affecting the use of the rotary joint.

[0016] Furthermore, the high temperature resistant composite seal is arranged on the inner side of the shaft seat close to the shaft sleeve. By arranging the high temperature resistant composite seal on the inner side of the shaft seat close to the shaft sleeve, the sealing performance of the improved rotary joint can be improved.

[0017] Furthermore, the shaft sleeve is made of metal material. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a cross-sectional view of the improved rotary joint of the utility model. DETAILED DESCRIPTION

[0020] The following will be combined with the implementation mode and examples to describe the implementation mode of the utility model in detail, but those skilled in the art will understand that the following implementation mode and examples are only used to illustrate the utility model and should not be regarded as limiting the scope of the utility model. 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.

[0021] The markings in the drawings of the specification include: shaft seat 1, high temperature resistant composite seal 2, bearing 3, stop sleeve 4, bolt 5, fastener 6, stop cover 7, shaft sleeve 8, resisting component 9, pressure ring 10, cavity 11.

[0022] The utility model provides an improved rotary joint, as shown in the attached Figure 1 As shown, it includes a shaft seat 1, a shaft sleeve 8 and a cover 7. The shaft seat 1 is used to carry the various components of the rotary joint. A high-temperature resistant composite seal 2 is fixed in the shaft seat 1. The high-temperature resistant composite seal 2 is arranged on the inner side of the shaft seat 1 near the shaft sleeve 8. There are two high-temperature resistant composite seals 2 (different numbers of high-temperature resistant composite seals 2 can be arranged according to the needs of different usage scenarios, which will not be repeated here). The high-temperature resistant composite seal 2 can be a metal seal, which is made of high-temperature alloy materials such as stainless steel and nickel alloy. The high-temperature resistant composite seal 2 not only ensures the sealing performance of the rotary joint in a high-temperature and high-pressure environment, reduces the risk of leakage and failure, but also improves the strength of the connection of the rotary joint body.

[0023] The sleeve 8 is located on the inner side of the shaft seat 1. The sleeve 8 is made of metal material (such as copper alloy and nickel alloy, etc.). A resisting component 9 is fixed on the outer side of one end of the sleeve 8 to prevent the rotary joint from axial movement. By setting the resisting component 9, the technical solution can better fix the components inside the rotary joint, prevent the rotary joint from displacement or loosening during use, ensure that the components can fit closely, and also enhance the sealing performance. The resisting component 9 in the technical solution is a retaining ring, which is made of elastic material. The retaining ring made of elastic material can absorb shock and vibration, compensate for thermal expansion and contraction, provide flexible fixation, reduce friction and wear, and seal and dustproof. These characteristics can significantly improve the performance and reliability of the rotary joint and adapt to various complex working environments. In addition, in other technical solutions, users can also select corresponding resisting components 9 for installation (such as positioning rings, stop rings, etc.) according to different scenarios.

[0024] A pressure ring 10 is also provided on the outside of the resisting component 9. The two outer sides of the pressure ring 10 are respectively fixed to the resisting component 9 and the shaft seat 1. The pressure ring 10 is made of graphite material (such as graphite carbon felt). The pressure ring 10 can effectively block dust and enhance the sealing performance of the rotary joint, thereby preventing tiny particles that may enter the internal structure of the rotary joint during use, thereby affecting the use effect of the rotary joint.

[0025] The baffle 7 is used to resist the intrusion of dust, moisture and other impurities in the external environment, so as to effectively protect the various components inside the rotary joint. One end of the baffle 7 is connected and fixed to the shaft seat 1 by a bolt 5, and the adjacent end of the baffle 7 fixed to the shaft seat 1 is fixed in abutment with the shaft sleeve 8, and a high-temperature resistant composite seal 2 is also fixed inside the baffle 7. In addition, a fastener 6 is detachably connected to one side of the bolt 5, and the fastener 6 is a tightening nut. By providing the fastener 6, the connection between the shaft seat 1 and the baffle 7 can be made more secure, avoiding looseness between the two structures due to long-term use, thereby affecting the use of the rotary joint. At the same time, a high-temperature resistant composite seal 2 is also provided on the inner side of the baffle 7 near the shaft sleeve 8. The high-temperature resistant composite seal 2 is consistent with the high-temperature resistant composite seal 2 in the above-mentioned shaft seat 1, and no further elaboration is given here.

[0026] The blocking cover 7, the shaft seat 1 and the shaft sleeve 8 also enclose a cavity 11, and the chamber structure of the cavity 11 is a rectangular parallelepiped. A bearing 3 for supporting the rotation of the rotary joint is also arranged in the cavity 11. In the present technical solution, two bearings 3 are provided, which are respectively located at the two ends of the cavity 11. Different numbers of bearings 3 can also be provided according to the needs of different usage scenarios, so as to better support the rotation of the rotary joint. By providing two bearings 3, the load of a single bearing 3 can be reduced, and the stability and load-bearing capacity of the entire rotary joint can be improved. At the same time, the distribution of the two bearings 3 can also share the friction during the rotation process more evenly, thereby reducing friction and wear and extending the service life of the rotary joint.

[0027] A stopper sleeve 4 is also provided in the cavity 11, and the two ends of the stopper sleeve 4 are respectively fixed to the outer rings of the two bearings 3. The stopper sleeve 4 can effectively protect the bearings 3 and can also help fix the position of the bearings 3, prevent the axial movement of the bearings 3 during the rotation process, ensure that the bearings 3 are always in the correct working position, and maintain the stability and reliability of the rotary joint. At the same time, the stopper sleeve 4 can also serve as an auxiliary seal to prevent external contaminants from entering the bearing 3 area and enhance the sealing performance of the entire rotary joint. In addition, there is a partial gap space above the stopper sleeve 4 and the two bearings 3, which is mainly used to facilitate installation and operation when installing the bearings 3.

[0028] In the present technical solution, the shaft seat 1, the cover 7, the retaining ring and the retaining sleeve 4 are made of high temperature and high pressure resistant metal materials, specifically 630 stainless steel (high strength stainless steel). In addition, other high temperature and high pressure resistant metal materials can be selected according to the needs of different users, which will not be elaborated here.

[0029] Specific use process: First, the user installs the bearing 3 and the stopper sleeve 4 into the shaft seat 1, and then installs the high-temperature resistant composite seal 2 inside the shaft seat 1 and the stopper cover 7 respectively. After the above installation steps are completed, wipe and oil them. Secondly, install the shaft seat 1 and the stopper cover 7 that have been equipped with the bearing 3 and the stopper sleeve 4 into the shaft sleeve 8, thereby initially forming the improved rotary joint. Finally, install the fastener 6, the pressure ring 10 and the retaining ring into the rotary joint, and tighten the nut to assemble a complete improved rotary joint. For the assembled rotary joint, first manually test whether the rotation is smooth, then install flanges at both ends, one end is for air intake, and the other end is for a pressure gauge. The seal is connected through the fastener 6 and the seal, and the air source is introduced to 0.8~1MPa. The air source is turned off and the pressure is maintained for 1~5h. When the pressure maintenance is completed, the flanges at both ends are removed, and the nuts are removed one by one. Finally, they are installed in the pipeline for fluid sealing and transportation.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. An improved rotary joint, characterized in that: It includes a shaft seat, a shaft sleeve and a baffle cover, wherein a high-temperature resistant composite seal is fixed in the shaft seat, and the shaft seat, the shaft sleeve and the baffle cover together form a cavity, and a bearing is fixed in the cavity, and a resisting component for preventing the rotary joint from axial movement is also fixed on the outer side of one end of the shaft sleeve, and a pressure ring is also provided on the outer side of the resisting component, and the two outer sides of the pressure ring are respectively abutted and fixed to the resisting component and the shaft seat.

2. The improved rotary joint according to claim 1, characterized in that: The retaining component is a retaining ring, and the retaining ring is made of elastic material.

3. The improved rotary joint according to claim 1 or 2, characterized in that: The bearings are provided with two and are respectively located at two ends of the cavity.

4. The improved rotary joint according to claim 3, characterized in that: A stopper sleeve is also included. The stopper sleeve is arranged in the cavity, and two ends of the stopper sleeve are respectively fixed to the outer rings of the two bearings.

5. The improved rotary joint according to claim 4, characterized in that: The shaft seat, the retaining cover, the retaining ring and the retaining sleeve are made of high temperature and high pressure resistant metal materials.

6. The improved rotary joint according to claim 1, characterized in that: The material of the pressure ring is graphite material.

7. The improved rotary joint according to claim 1, characterized in that: It also includes a bolt, one end of the blocking cover is connected and fixed to the shaft seat by the bolt, and the adjacent end of the blocking cover fixed to the shaft seat is abutted and fixed to the shaft sleeve.

8. The improved rotary joint according to claim 7, characterized in that: A fastener is detachably connected to one side of the bolt, and the fastener is a tightening nut.

9. The improved rotary joint according to claim 1, characterized in that: The high temperature resistant composite seal is arranged on the inner side of the shaft seat close to the shaft sleeve.

10. The improved rotary joint according to claim 1, characterized in that: The material of the shaft sleeve is metal material.

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