Oil guide rotary connector

Abstract

The utility model relates to the technical field of rotary joints, and discloses an oil guide rotary connector which comprises an oil guide pipe, a rotary connecting pipe and a sealing mechanism, a first bearing is arranged in the oil guide pipe, and an oil outlet of the oil guide pipe is provided with an end cover; one end of the rotary connecting pipe penetrates through the end cover to be connected with the first bearing, and the rotary connecting pipe can rotate in the end cover and the first bearing; the sealing mechanism comprises a first sealing piece and a second sealing piece, the first sealing piece is connected to the outer wall face of the rotary connecting pipe and attached to the side face, facing the end cover, of the first bearing so as to shield gaps between rolling bodies in the first bearing, and the second sealing piece is arranged in the oil guide pipe and used for sealing the connecting position of the end cover and the rotary connecting pipe. Therefore, according to the sealing structure, the sealing performance of the connecting position of the end cover and the rotary connecting pipe is more effectively enhanced, and the situation that hot oil leaks out from the connecting position of the end cover and the rotary connecting pipe is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotary joint technical field, concretely relates to a guide oil rotary connector. BACKGROUND

[0002] The heat conducting oil rotary joint is a kind of precision mechanical components for transmitting high-temperature heat conducting oil in industrial production, which allows heat conducting oil to be sealed and transmitted between fixed pipelines and rotating equipment, and is widely used in occasions requiring accurate temperature control and heat energy conversion, such as chemical industry, plastic processing, textile, papermaking, food processing and other fields. The design of these joints is crucial to ensure the continuity and efficiency of the production process, as they can prevent heat oil leakage and ensure effective heat transfer. The outlet of the rotary joint is provided with an end cover, and the oil outlet pipe penetrates through the end cover and extends into the rotary joint to guide the hot oil in the rotary joint.

[0003] Firstly, since the oil outlet pipe rotates in the rotary joint, friction occurs at the contact point between the end cover and the oil outlet pipe, which may cause the end cover to break or seal poorly after long-term operation, thereby causing heat oil leakage. Secondly, the connection of the inlet and outlet pipes of the existing joint with external equipment mostly relies on threaded connection, and sealing glue needs to be applied to enhance the sealing effect. This sealing glue has a long curing time, which not only increases the production process time, but also easily causes liquid leakage at the connection in the case of using before complete curing. In addition, common bearings are made of metal materials, which have poor corrosion resistance at high temperatures and need regular maintenance, increasing labor and maintenance costs. SUMMARY

[0004] The utility model aims at overcoming the existing technology that the contact point between the end cover and the oil outlet pipe is prone to oil leakage.

[0005] To achieve the above-mentioned purpose, the utility model provides a guide oil rotary connector, which includes a connector main body, a rotating connecting pipe and a sealing mechanism. The connector main body includes a guide oil pipe, a first bearing is arranged in the guide oil pipe, and an end cover is arranged at the oil outlet of the guide oil pipe. One end of the rotating connecting pipe penetrates through the end cover and is connected with the first bearing, and the rotating connecting pipe can rotate in the end cover and the first bearing. The sealing mechanism includes a first sealing member and a second sealing member. The first sealing member is connected to the outer wall surface of the rotating connecting pipe and is attached to the side of the first bearing facing the end cover to block the gap between the rolling bodies in the first bearing. The second sealing member is arranged in the guide oil pipe to seal the connection between the end cover and the rotating connecting pipe.

[0006] Optionally, the end cover is provided with a first shielding ring at one end facing the oil outlet, the first sealing member includes a second shielding ring, and the second sealing member is arranged between the first shielding ring and the second shielding ring to form a closed space wrapping the connection between the first shielding ring and the rotating connecting pipe.

[0007] Optionally, the second sealing member comprises a sealing ring, and the first and second blocking rings form slopes respectively towards one side of the sealing ring and press the sealing ring therebetween.

[0008] Optionally, a spring seat and a spring are arranged at one end of the oil guide pipe close to the oil inlet, the spring is arranged in a compressed manner between the spring seat and the first bearing in a horizontal direction, and the spring is used to push the first bearing and the second blocking ring to move towards the first blocking ring to press the second sealing member.

[0009] Optionally, the second blocking ring is provided with a flat surface close to the first bearing, and the flat surface is attached to the side surface of the first bearing.

[0010] Optionally, a first sealing washer is arranged between the second bearing and the inner side surface of the limiting groove, and the first sealing washer is used to block the gap between the rolling elements in the second bearing.

[0011] Optionally, the end cover further comprises a first flange, a second flange is arranged at the oil outlet, the first flange is connected with the second flange to connect the end cover at the oil outlet of the oil guide pipe, and a gasket is arranged at the connection between the first flange and the second flange to seal the connection.

[0012] Optionally, a third flange is arranged at the inlet of the oil guide pipe, and the oil guide rotary connector further comprises an oil conveying pipe, one end of the oil conveying pipe is provided with a fourth flange, the fourth flange is detachably connected with the third flange, and the other end of the oil conveying pipe is provided with a fifth flange for sealing connection with external oil conveying equipment.

[0013] Optionally, the connector body further comprises an oil return pipe connected with the oil guide pipe, and a sixth flange is arranged at the end of the oil return pipe away from the oil guide pipe for connection with a recovered hot oil equipment.

[0014] Through the above technical scheme, the first sealing member in the oil guide rotary connector of the utility model blocks most of the hot oil on the other side of the first bearing, and the end cover further prevents the hot oil from overflowing from the connection between the end cover and the rotary connector pipe and the connection between the connector body. Therefore, the sealing structure in the utility model more effectively enhances the sealing performance of the connection between the end cover and the rotary connector pipe, and prevents the hot oil from leaking out of the connection between the end cover and the rotary connector pipe. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the oil guide rotary connector of the utility model;

[0016] Figure 2 is a structural schematic view of the oil guide rotary connector of the utility model;

[0017] Figure 3 is a structural schematic view of the oil guide rotary connector of the utility model;

[0018] Figure 4 is a schematic view of an end cover structure of the present application;

[0019] Figure 5 is a schematic view of a structure of a first sealing member and a second sealing member of the present application.

[0020] Explanation of reference signs

[0021] 1, connector main body; 101, first bearing; 102, second flange; 103, spring seat; 104, spring; 105, third flange; 106, positioning head; 107, positioning hole; 108, threaded groove; 109, oil guide pipe; 2, rotating connecting pipe; 201, fixed disc; 3, end cover; 301, first flange; 302, first shielding ring; 303, limiting groove; 304, first sealing washer; 305, gasket; 306, second bearing; 4, first sealing member; 401, second shielding ring; 5, second sealing member; 501, sealing ring; 6, oil delivery pipe; 601, fourth flange; 602, fifth flange; 603, second sealing washer; 604, oil filter screen; 7, oil return pipe; 701, sixth flange; 8, fixed through hole; 9, fixing bolt; 901, nut. DETAILED DESCRIPTION

[0022] The embodiments of the present application will be further described in conjunction with the drawings and examples. The detailed description of the following examples and drawings are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application, and the present application can be realized in many different forms, and is not limited to the specific examples disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0023] The present application provides these examples in order to make the present application thorough and complete, and fully express the scope of the present application to those skilled in the art. It should be noted that: unless otherwise specified, the relative arrangement of components and steps, the composition of materials, numerical expressions and values described in these examples should be interpreted as merely exemplary, and not as a limitation.

[0024] It should be noted that, in the description of the present application, unless otherwise specified, the meaning of "a plurality of" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] In addition, the "first", "second" and similar words used in the utility model do not represent any order, quantity or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the error allowable range. "Parallel" is not strictly parallel, but within the error allowable range. "Include" or "contain" and similar words mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements.

[0026] It should be further noted that in the description of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] All the terms used in the utility model have the same meaning as understood by ordinary skilled persons in the field to which the utility model belongs, unless otherwise specifically defined. It should also be understood that the terms defined in, such as general dictionaries, should be interpreted to have meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formalized sense, unless explicitly defined here.

[0028] The technology, method and equipment known to ordinary skilled persons in the relevant field can not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as part of the specification.

[0029] Reference Figure 1 and Figure 2 As shown in the figure, the oil guide rotary connector comprises:

[0030] The connector body 1 comprises an oil guide pipe 109, the first bearing 101 is arranged in the oil guide pipe 109, and the oil outlet of the oil guide pipe 109 is provided with an end cover 3;

[0031] The rotary connecting pipe 2 is connected with the first bearing 101 at one end through the end cover 3, and the rotary connecting pipe 2 can rotate in the end cover 3 and the first bearing 101;

[0032] The sealing mechanism comprises a first sealing piece 4 and a second sealing piece 5, the first sealing piece 4 is connected to the outer wall surface of the rotary connecting pipe 2 and is attached to the side surface of the first bearing 101 facing the end cover 3, so as to block the gap between the rolling bodies in the first bearing 101, and the second sealing piece 5 is arranged in the oil guide pipe 109 and is used for sealing the connection between the end cover 3 and the rotary connecting pipe 2.

[0033] Wherein, referenceFigure 2 As shown, the outer wall surface and the inner wall surface of the first bearing 101 correspond to the inner wall surface of the oil guide pipe 109 and the inner wall surface of the rotating connector 2 respectively, so that the hot oil cannot pass through the first bearing 101 at the two places.

[0034] In addition, the two sides of the first bearing 101 are in an open state, and the rolling elements in the first bearing 101 can be directly contacted with the hot oil, so that the first bearing 101 has good lubricity, but there are gaps between the rolling elements, and the hot oil can pass through the first bearing 101 from the gaps to the connecting position of the end cover 3 and the rotating connector 2.

[0035] The first sealing element 4 located on the outer wall surface of the rotating connector 2 is attached to the side of the first bearing 101 facing the end cover 3, and blocks the gaps between the rolling elements in the first bearing 101, so that most of the hot oil is blocked on the side of the first bearing 101 away from the end cover 3.

[0036] In addition, the second sealing element 5 seals the connecting position of the end cover 3 and the rotating connector 2 in the inside of the oil guide pipe 109, so that part of the hot oil flowing from the first sealing element 4 is blocked outside the second sealing element 5 and cannot contact the connecting position of the end cover 3 and the rotating connector 2.

[0037] It can be seen that after the hot oil passes through the double blocking of the first sealing element 4 and the second sealing element 5, it almost cannot contact the connecting position of the end cover 3 and the rotating connector 2, so that the sealing performance of the end cover 3 and the rotating connector 2 is ensured.

[0038] The second sealing element 5 in the oil guide rotating connector can block most of the hot oil on the other side of the first bearing 101, and the first sealing element 4 further prevents the hot oil from overflowing from the connecting position of the first sealing element 4 and the rotating connector 2 and the connecting position of the connector body 1. Therefore, the sealing structure in the utility model more effectively enhances the sealing performance of the connecting position of the end cover 3 and the rotating connector 2, and prevents the hot oil from leaking out of the connecting position of the end cover 3 and the rotating connector 2.

[0039] In the utility model, the sealing mechanism and the end cover 3 can have any appropriate structure, for example, as shown in Figure 2 and Figure 4 As shown, the end cover 3 can be provided with a first shielding ring 302 at one end facing the oil outlet, the first sealing element 4 can include a second shielding ring 401, and the second sealing element 5 can be arranged between the first shielding ring 302 and the second shielding ring 401 to form a closed space wrapping the connecting position of the first shielding ring 302 and the rotating connector 2, so as to block the hot oil flowing from the second shielding ring 401 outside the first sealing element 4, and prevent the hot oil from contacting the connecting position of the first shielding ring 302 and the rotating connector 2.

[0040] The first sealing ring 501 and the rotating connector 2 can have a gap therebetween, so as to avoid the first shielding ring 302 rubbing against the inner side surface of the rotating connector 2.

[0041] In some embodiments, the second sealing member 5 can include a sealing ring 501, and the first shielding ring 302 and the second shielding ring 401 can have a slope surface on the side facing the sealing ring 501, and the sealing ring 501 can be pressed between the two slope surfaces, so that there is no gap between the contact surfaces, thereby ensuring the sealing.

[0042] Of course, in other embodiments, the outer contour of the first shielding ring 302 can include a spherical surface, and the axial direction of the spherical surface can coincide with the axial direction of the oil guide pipe 109 when the end cover 3 is connected to the oil outlet of the oil guide pipe 109. A through hole can be arranged in the center of the first shielding ring 302, and the axial direction of the rotating connector 2 can coincide with the axial direction of the oil guide pipe 109 after the rotating connector 2 passes through the through hole, thereby avoiding the rotating connector 2 and the oil guide pipe 109 being eccentric during assembly, and thus improving the sealing reliability of the first rotating shaft.

[0043] In addition, the rotating connector 2, the first shielding ring 302, the second shielding ring 401, and the sealing ring 501 can be made of graphite to improve the wear resistance and avoid damage to the oil guide rotating connector.

[0044] The rotating connector 2 and the sealing ring 501 can be subjected to antimony immersion treatment.

[0045] In some embodiments, referring to Figure 2 and Figure 5 It can be seen that the spring seat 103 and the spring 104 can be arranged at the end of the oil guide pipe 109 close to the oil inlet, and the spring 104 can be arranged in a horizontal direction between the spring seat 103 and the first bearing 101, and used to push the first bearing 101 and the second shielding ring 401 to move towards the first shielding ring 302, so as to press the second sealing member 5.

[0046] The second shielding ring 401 can be fixed on the outer wall surface of the rotating connector 2 and rotate with the rotating connector 2, so that the slope surface of the second shielding ring 401 rubs against the sealing ring 501. However, after the sealing ring 501 is worn, the spring 104 can push the first bearing 101 and the second shielding ring 401 to move towards the first shielding ring 302 to fill the gap caused by the wear of the sealing ring 501 and the first shielding ring 302.

[0047] It can be seen that if the sealing ring 501 is driven to rotate by the second shielding ring 401, the slope surface friction with the first shielding ring 302 causes the sealing ring 501 to wear out, and the spring 104 can also push the first bearing 101, the second shielding ring 401 and the sealing ring 501 to move towards the first shielding ring 302 to fill the wear.

[0048] Wherein, the wear of the slope surface and the sealing ring 501 also makes the contact area between the second shielding ring 401 and the sealing ring 501 and / or the first shielding ring 302 and the sealing ring 501 larger, enhancing the sealing effect.

[0049] In addition, the second shielding ring 401 is in contact with the sealing ring 501 and the first bearing 101, which also limits the axial movement of the rotating connector 2 along the oil guide pipe 109.

[0050] In some embodiments, the end of the second shielding ring 401 close to the first bearing 101 can be provided with a flat surface that fits the side surface of the first bearing 101, so as to better fit the side surface of the first bearing 101 while ensuring that the part of the flat surface in contact with the side surface of the first bearing 101 wears out to the same extent, avoiding gaps between the two.

[0051] In some embodiments, a limiting groove 303 can be provided in the end cover 3, and a second bearing 306 can be provided in the limiting groove 303, which is used to support the rotating connector 2, and the rotating connector 2 can rotate in the second bearing 306, so as to better fix the rotating connector 2 in the oil guide pipe 109.

[0052] In some embodiments, a first sealing washer 304 can be provided between the second bearing 306 and the inner side surface of the limiting groove 303, which is used to shield the gap between the rolling bodies in the second bearing 306 and limit the axial movement of the second bearing 306 in the limiting groove 303 along the rotating connector 2, so as to avoid the hot oil flowing into the connection between the end cover 3 and the rotating connector 2 through the gap between the rolling bodies in the second bearing 306 during the wear process of the sealing ring 501, and flowing out of the connector body 1.

[0053] In some embodiments, referring to Figure 2 As shown, the end cover 3 can also include a first flange 301, and a second flange 102 can be provided at the oil outlet, the first flange 301 and the second flange 102 are connected to connect the end cover 3 at the oil outlet of the oil guide pipe 109, and a gasket 305 is provided at the connection between the first flange 301 and the second flange 102 for sealing the connection.

[0054] In some embodiments, referring to Figure 1As shown, a third flange 105 can be provided at the inlet of the oil guide pipe 109. The oil guide rotary connector also includes an oil pipe 6. A fourth flange 601 can be provided at one end of the oil pipe 6. The fourth flange 601 and the third flange 105 are detachably connected to facilitate replacement of a damaged oil pipe 6 or oil guide connector. At the same time, there is no need to apply sealant at the connection, thereby improving production efficiency.

[0055] The other end of the oil delivery pipe 6 is provided with a fifth flange 602 for sealingly connecting to an external oil delivery device.

[0056] In addition, an oil filter 604 may be provided in the oil pipeline 6 for filtering the hot oil in the oil pipeline 6; of course, in some other embodiments, a hot oil filtering device may be provided between the oil pipeline 6 and the external oil delivery equipment to filter the hot oil from the outside of the oil pipeline 6, thereby preventing the hot oil used from having poor quality from entering the oil guide and selection connector and causing abnormal wear to the various components, thereby extending the service life of the various components.

[0057] In some embodiments, the connector body 1 may further include an oil return pipe 7 connected to the oil guide pipe 109 . A sixth flange 701 may be provided at one end of the oil return pipe 7 away from the oil guide pipe 109 for connection to a hot oil recovery device.

[0058] Among them, reference Figure 3 It can be seen that the oil inlet of the oil guide pipe 109 may include a bell mouth, the oil delivery pipe 6 is connected to the small mouth, and the large mouth faces the inner cavity of the oil guide pipe 109 to gradually expand the flow channel and accelerate the oil delivery efficiency.

[0059] In addition, when the hot oil flows back from the rotating connecting pipe 2 to the oil guide pipe 109, the flow rate of the hot oil is not high, and only a small part of the hot oil will splash from the rotating connecting pipe 2 to the bell mouth. At this time, the hot oil will slide from the inclined surface of the bell mouth into the oil guide pipe 109 to improve the recovery rate of the hot oil.

[0060] In some embodiments, a connection groove may be provided on the second flange 102 , and fixing through holes 8 for the fixing bolts 9 to pass through are provided on the remaining flanges.

[0061] Among them, internal threads are provided in the fixing through hole 8 of the first flange 301 and the connecting groove of the second flange 102, and the fixing bolt 9 can be screwed into the connecting groove of the second flange 102 through the fixing through hole 8 of the first flange 301, thereby facilitating the assembly between the first flange 301 and the second flange 102; of course, in some other embodiments, the first flange 301 may not be provided with internal threads.

[0062] In addition, reference Figure 2It can be known that the fixing bolt 9 can pass through the fixing through hole 8 on the third flange 105 and the fourth flange 601, and a nut 901 is connected at the tail end of the fixing bolt 9, so that the third flange 105 and the fourth flange 601 are detachably fixedly connected; meanwhile, the second sealing washer 603 can also be arranged between the third flange 105 and the fourth flange 601, so as to seal the connection between the oil inlet of the oil conveying pipe 6 and the oil guide pipe 109.

[0063] In some embodiments, the end of the rotating connecting pipe 2 away from the oil guide pipe 109 can be provided with a fixing disc 201, so as to reinforce the connection between the rotating connecting pipe 2 and other equipment, avoid the rotating connecting pipe 2 from falling off the equipment during work, and avoid the need to smear sealant at the connection between the two, so as to improve production efficiency.

[0064] The preferred embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to this. Within the technical concept range of the utility model, the technical scheme of the utility model can be subjected to various simple modifications, and in order to avoid unnecessary repetition, the utility model will not be described again for various possible combination modes. However, these simple modifications and combinations should also be regarded as the disclosed content of the utility model, and all belong to the protection range of the utility model.

Claims

1. An oil-conducting rotary connector, characterized in that: include: A connector body (1), the connector body (1) comprising an oil guide tube (109), a first bearing (101) being provided in the oil guide tube (109), and an end cover (3) being provided at an oil outlet of the oil guide tube (109); a rotating connecting pipe (2), one end of the rotating connecting pipe (2) passing through the end cover (3) and connected to the first bearing (101), and the rotating connecting pipe (2) is capable of rotating within the end cover (3) and the first bearing (101); A sealing mechanism, comprising a first sealing member (4) and a second sealing member (5), wherein the first sealing member (4) is connected to the outer wall surface of the rotary connecting pipe (2) and is in contact with the side surface of the first bearing (101) facing the end cover (3) to cover the gap between the rolling elements in the first bearing (101), and the second sealing member (5) is arranged in the oil guide pipe (109) and is used to seal the connection between the end cover (3) and the rotary connecting pipe (2).

2. The oil-conducting rotary connector according to claim 1, characterized in that: A first blocking ring (302) is provided at one end of the end cover (3) facing the oil outlet, the first sealing member (4) includes a second blocking ring (401), and the second sealing member (5) is provided between the first blocking ring (302) and the second blocking ring (401) to form a closed space enclosing a connection between the first blocking ring (302) and the rotary connecting pipe (2).

3. The oil-conducting rotary connector according to claim 2, characterized in that: The second sealing member (5) comprises a sealing ring (501), and the first blocking ring (302) and the second blocking ring (401) respectively form slopes on one side facing the sealing ring (501), and squeeze the sealing ring (501) between the two.

4. The oil-conducting rotary connector according to claim 3, characterized in that: A spring seat (103) and a spring (104) are provided at one end of the oil guide pipe (109) near the oil inlet thereof. The spring (104) is compressed in the horizontal direction and arranged between the spring seat (103) and the first bearing (101), and is used to push the first bearing (101) and the second blocking ring (401) toward the first blocking ring (302) to squeeze the second sealing member (5).

5. The oil-conducting rotary connector according to claim 2, characterized in that: One end of the second shielding ring (401) close to the first bearing (101) is provided with a plane that fits with the side surface of the first bearing (101).

6. The oil-conducting rotary connector according to claim 1, characterized in that: A limiting groove (303) is provided in the end cover (3), a second bearing (306) is provided in the limiting groove (303), and the second bearing (306) is used to support the rotating connecting pipe (2).

7. The oil-conducting rotary connector according to claim 6, characterized in that: A first sealing gasket (304) is provided between the second bearing (306) and the inner side surface of the limiting groove (303) to cover the gap between the rolling elements in the second bearing (306).

8. The oil-conducting rotary connector according to claim 1, characterized in that: The end cover (3) further comprises a first flange (301), a second flange (102) is provided at the oil outlet, the first flange (301) and the second flange (102) are connected to connect the end cover (3) to the oil outlet of the oil guide pipe (109), and a gasket (305) is provided at the connection between the first flange (301) and the second flange (102) for sealing the connection between the two.

9. The oil-conducting rotary connector according to claim 1, characterized in that: A third flange (105) is provided at the inlet of the oil guide pipe (109), and the oil guide rotary connector further comprises an oil delivery pipe (6). A fourth flange (601) is provided at one end of the oil delivery pipe (6), and the fourth flange (601) is detachably connected to the third flange (105). A fifth flange (602) is provided at the other end of the oil delivery pipe (6) for sealing connection with external oil delivery equipment.

10. The oil-conducting rotary connector according to claim 1, characterized in that: The connector body (1) further comprises an oil return pipe (7) connected in parallel to the oil guide pipe (109); an end of the oil return pipe (7) away from the oil guide pipe (109) is provided with a sixth flange (701) for sealingly connecting to a hot oil recovery device.

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