CN211875369U - Spring adjusting device used at rotary joint - Google Patents
Spring adjusting device used at rotary joint Download PDFInfo
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- CN211875369U CN211875369U CN202020229898.0U CN202020229898U CN211875369U CN 211875369 U CN211875369 U CN 211875369U CN 202020229898 U CN202020229898 U CN 202020229898U CN 211875369 U CN211875369 U CN 211875369U
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- rotary joint
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- screw bolt
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Abstract
The utility model relates to a be used in spring adjusting device of rotary joint department, including the screw rod, the screw rod includes big double-screw bolt and little double-screw bolt, is provided with the bottom plate between big double-screw bolt and the little double-screw bolt, and big double-screw bolt both ends integration square head and bottom plate respectively, big double-screw bolt middle part are fixed with big nut, use the bottom plate to install gasket and little nut by near and far in proper order as referring to on the little double-screw bolt, and the spring is compressed tightly on the bottom plate by gasket and little nut, realizes the decrement of spring through adjusting little nut. The sealing effect of the rotary joint is improved, the service life is prolonged, and the fault rate of the rotary joint area is effectively reduced.
Description
Technical Field
The utility model relates to a rotary joint adjusting device technical field, more specifically say, it relates to a spring adjusting device who is used in rotary joint department.
Background
The rotary joint is widely applied to pipelines of cooling and drying equipment in the industries of steel, metallurgy, papermaking, glass, printing and dyeing, chemical engineering, medicine, petroleum, cigarettes, food, plastics, rubber and the like. The main function of the rotary joint is to connect a fixed pipeline and a rotary motion pipeline, one end of the rotary joint is connected with the fixed pipeline, the other end of the rotary joint is connected with the rotary pipeline, the rotary joint is used for ensuring the free rotation of the rotary pipeline, and the fixed pipeline is communicated with the rotary motion pipeline without leakage.
The widely used rotary joint of the present is a rotary joint using mechanical seal, as shown in fig. 1, the working principle is as follows: under the action of spring tension, the graphite fixing ring I10 and the graphite fixing ring II 11 axially position the hollow rotating shaft 12, and a sliding sealing surface with a self-lubricating function is formed by the contact surface of the graphite fixing ring I10 and the contact surface of the graphite fixing ring II 12 to achieve the purpose of sealing.
One disadvantage of prior rotary joints that employ mechanical seals. There is sliding friction between solid fixed ring 10 of graphite and the solid fixed ring two 11 of graphite and axis of rotation 12, after using a period, the solid fixed ring 10 of graphite and the solid fixed ring two 11 of graphite can the wearing and tearing attenuation, and the spring extension, the pressure reduction of spring, the pressure reduction between 2 solid fixed rings of graphite and the axis of rotation, sealing performance variation can cause the leakage of medium (liquid, gas) in the cavity 9.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a spring adjusting device for rotary joint department improves the sealed effect of rotary joint department, and increase of service life effectively reduces the regional fault rate of rotary joint.
The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a be used in spring adjusting device of rotary joint department, includes the screw rod, and the screw rod includes big double-screw bolt and little double-screw bolt, is provided with the bottom plate between big double-screw bolt and the little double-screw bolt, and square head and bottom plate are connected in integration respectively at big double-screw bolt both ends, and big double-screw bolt middle part is fixed with big nut, uses the bottom plate to install gasket and little nut by near and far in proper order as the reference on the little double-screw bolt, and the spring is compressed tightly on the bottom plate by gasket and little nut, realizes the decrement of spring through adjusting little.
Further, the large stud is mounted on a swivel spring mount.
Furthermore, a tooth hole is formed in the rotary joint spring base, the large stud is matched with the inner screw thread in the tooth hole to achieve installation, and the large nut is tightly attached to the rotary joint spring base.
Furthermore, a sealing glue is coated between the large nut and the rotary joint spring base.
Further, the outer diameter of the bottom plate is 2-3mm larger than the outer diameter of the spring.
Further, the washer and the nut are smaller than the inner diameter of the spring by 2 mm.
Further, the other end of the spring is connected to the rotating shaft.
Furthermore, the spring is located in a cavity of the rotary joint, and the cavity is filled with a medium.
Furthermore, the rotating shaft is axially positioned by the first graphite fixing ring and the second graphite fixing ring.
To sum up, the utility model discloses following beneficial effect has:
firstly, the adjusting mode of the spring is changed, and the added spring adjusting device can realize the compression amount of the spring by twisting the nut;
secondly, the compression amount of the spring can be adjusted, so that the pressure between the first graphite fixing ring and the rotating shaft and the pressure between the second graphite fixing ring and the rotating shaft are not reduced, and the sealing effect of the inner cavity of the rotary joint is ensured;
thirdly, the problem of short service life caused by poor sealing effect is also improved.
Drawings
FIG. 1 is a schematic view of a conventional rotary joint structure;
FIG. 2 is a schematic structural view of the spring adjustment device of the present invention;
fig. 3 is a usage state diagram of the present invention.
In the figure: 1-square head, 2-large stud, 3-large nut, 4-bottom plate, 5-gasket, 6-small nut, 7-small stud, 8-spring, 9-cavity, 10-first fixing ring, 11-second fixing ring, 12-rotating shaft, 13-sealing area, 14-lifting lug and 15-spring adjusting device.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
It should be noted that all the directional terms such as "upper" and "lower" referred to herein are used with respect to the view of the drawings, and are only for convenience of description, and should not be construed as limiting the technical solution.
Referring to fig. 2, a spring adjusting device for rotary joint department, including the screw rod, the screw rod includes big double-screw bolt 2 and little double-screw bolt 7, be provided with bottom plate 4 between big double-screw bolt 2 and the little double-screw bolt 7, big double-screw bolt 2 both ends are integrated connection square head 1 and bottom plate 4 respectively, big double-screw bolt 2 middle part is fixed with big nut 3, use bottom plate 4 to install gasket 5 and little nut 6 in proper order by near and far away as referring to on the little double-screw bolt 7, spring 8 is compressed tightly on bottom plate 4 by gasket 5 and little nut 6, realizes the compression capacity of spring 8 through adjusting little nut 6.
Through the scheme, in actual use, the compression amount of the spring 8 can be realized by adjusting the small nut 6.
In one embodiment, see fig. 3, the large stud 2 is mounted on a swivel spring 8 base; a tooth hole is formed in the base of the rotary joint spring 8, the large stud 2 is installed by matching with an inner screw thread in the tooth hole, and the large nut 3 is tightly attached to the base of the rotary joint spring 8; sealant is coated between the large nut 3 and the base of the rotary joint spring 8, and a lifting lug 14 is further arranged on the base of the rotary joint spring 8.
Through the scheme, the installation of the spring adjusting device 15 is realized, and the installation position is determined.
In one embodiment, the outer diameter of the base plate 4 is 2-3mm larger than the outer diameter of the spring 8.
In one embodiment, the washer 5 and nut are 2mm smaller than the inner diameter of the spring 8.
In one embodiment, the other end of the spring 8 is connected to a rotating shaft 12.
Through the scheme, the spring 8 can fix the position of the rotating shaft 12 constantly, and the pressure on the rotating shaft 12 is unchanged by matching with the adjusting action of the spring adjusting device 15, so that the sealing performance is improved.
In one embodiment, the spring 8 is located in a cavity 9 of the rotary joint, and the cavity 9 is filled with a liquid or gaseous medium.
In one embodiment, the rotating shaft 12 has a collar, which is in contact with the first graphite fixing ring 10 and the second graphite fixing ring 11, and is axially positioned by the first graphite fixing ring 10 and the second graphite fixing ring 11, and the contact position forms a sealing area 13.
There is sliding friction between solid fixed ring 10 of graphite and the solid fixed ring two 11 of graphite and the pivot, after using a period, solid fixed ring 10 of graphite and the solid fixed ring two 11 of graphite can the wearing and tearing attenuation, spring 8 extension, spring 8's pressure reduces, 2 the pressure reduction between the solid fixed ring of graphite and the pivot, sealing performance variation, under the effect of spring adjusting device 15, adjust spring 8's compressive strain, when the solid fixed ring 10 of graphite and the solid fixed ring two 11 wearing and tearing attenuation of graphite, when appearing leaking, through adjusting big nut 3 on this device, compress spring 8, compensate the solid fixed ring 10 of graphite and the solid fixed ring two 11's of graphite wearing and tearing volume, make the solid fixed ring 10 of graphite and the solid fixed ring two 11 of graphite and the pivot pressure between not reduce, realize leak-proof purpose.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A spring adjustment device for use at a swivel joint, characterized by: the screw rod comprises a large stud and a small stud, a bottom plate is arranged between the large stud and the small stud, the two ends of the large stud are respectively connected with a square head and the bottom plate in an integrated mode, a large nut is fixed in the middle of the large stud, a gasket and the small nut are sequentially installed on the small stud from near to far by taking the bottom plate as a reference, a spring is pressed on the bottom plate through the gasket and the small nut, and the compression amount of the spring is achieved by adjusting the small nut.
2. A spring adjustment device for use at a swivel joint as claimed in claim 1, wherein: the large stud is installed on the rotary joint spring base.
3. A spring adjustment device for use at a swivel joint as claimed in claim 2, wherein: the rotary joint spring base is provided with a tooth hole, the large stud is matched with the inner screw thread in the tooth hole to realize installation, and the large nut is tightly attached to the rotary joint spring base.
4. A spring adjustment device for use at a swivel joint as claimed in claim 1, wherein: and a sealant is coated between the large nut and the rotary joint spring base.
5. A spring adjustment device for use at a swivel joint as claimed in claim 1, wherein: the outer diameter of the bottom plate is 2-3mm larger than that of the spring.
6. A spring adjustment device for use at a swivel joint as claimed in claim 1, wherein: the inner diameter of the gasket and the nut is 2mm smaller than that of the spring.
7. A spring adjustment device for use at a swivel joint as claimed in claim 1, wherein: the other end of the spring is connected to the rotating shaft.
8. A spring adjustment device for use at a swivel joint as claimed in claim 1 or 7, wherein: the spring is positioned in a cavity of the rotary joint, and a medium is injected into the cavity.
9. A spring adjustment device for use at a swivel joint as claimed in claim 7, wherein: the rotating shaft is axially positioned by the first graphite fixing ring and the second graphite fixing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020229898.0U CN211875369U (en) | 2020-02-29 | 2020-02-29 | Spring adjusting device used at rotary joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020229898.0U CN211875369U (en) | 2020-02-29 | 2020-02-29 | Spring adjusting device used at rotary joint |
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| Publication Number | Publication Date |
|---|---|
| CN211875369U true CN211875369U (en) | 2020-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020229898.0U Active CN211875369U (en) | 2020-02-29 | 2020-02-29 | Spring adjusting device used at rotary joint |
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| CN (1) | CN211875369U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112975809A (en) * | 2021-02-07 | 2021-06-18 | 广东韶钢松山股份有限公司 | Fixing device of hydraulic wrench for adjusting large spring of coke oven |
-
2020
- 2020-02-29 CN CN202020229898.0U patent/CN211875369U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112975809A (en) * | 2021-02-07 | 2021-06-18 | 广东韶钢松山股份有限公司 | Fixing device of hydraulic wrench for adjusting large spring of coke oven |
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