CN209875954U - Double-acting ring and single-fixed ring interlocking internal pressure type sealing device - Google Patents
Double-acting ring and single-fixed ring interlocking internal pressure type sealing device Download PDFInfo
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- CN209875954U CN209875954U CN201822216578.7U CN201822216578U CN209875954U CN 209875954 U CN209875954 U CN 209875954U CN 201822216578 U CN201822216578 U CN 201822216578U CN 209875954 U CN209875954 U CN 209875954U
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Abstract
The utility model relates to a double-movable ring and single-fixed ring interlocking internal pressure type sealing device, which comprises a wear-resistant steel bushing with a hollow structure, a first movable ring, a second movable ring and a fixed ring, wherein one end of a rotor passes through the wear-resistant steel bushing, the outer peripheral side of the rotor is sleeved with the first movable ring and the second movable ring in sequence, a spring is arranged in the inner cavity of the first movable ring, and one end of a top is arranged in the inner cavity of the first movable ring; the other end of the rotor is arranged in an inner cavity of a second movable ring, a countersunk screw is arranged in the inner cavity of the second movable ring, when the rotor rotates at a high speed to work, the first movable ring and the second movable ring synchronously rotate to form a wear-resistant steel bushing, the fixed ring is fixed and does not move, the first movable ring and the second movable ring reversely move under the action of a spring to respectively touch the left inner side and the right inner side of the fixed ring to generate a pressure friction sealing effect, a multi-layer step interlocking internal pressure type sealing structure is formed between the wear-resistant steel bushing, the first movable ring, the second movable ring and the fixed ring, the sealing performance is better, no gap is left, powder leakage can be effectively prevented, frequent maintenance and part replacement are not needed, the cost is saved.
Description
Technical Field
The invention relates to the field of internal mixers, in particular to a double-acting ring and single-fixed ring interlocking internal pressure type sealing device.
Background
An internal mixer, also called kneading machine, mainly used for plasticating and mixing of rubber, is a mechanical equipment which is equipped with a pair of rotors with specific shapes and relatively rotating and can plasticate and mix polymer material in a clearance mode under the closed state of adjustable temperature and pressure, and is mainly formed from internal mixing chamber, rotor sealing device, feeding and pressing device, discharging device, driving device and machine base, etc. said internal mixer is environment-friendly, and the quality of mixed rubber material is good and bad, and mainly depends on rotor sealing device, mixing temperature, filling quantity, rotor rotating speed, mixing time, top-pushing bolt pressure and rotor structure, in which the rotor sealing device is one of important influencing factors, and mainly because the rotor is subjected to axial thrust, radial force, circumferential force, repeated torsion, pressure given by top-pushing bolt, friction rubber material, impact force, And the influence of temperature and the like, if the sealing device of the joint surface of the rotor and the machine body is not good, the phenomena of powder leakage and material leakage can occur, the quality of the rubber compound is influenced, and the surrounding environment is polluted, so the good and bad sealing performance of the internal mixer is one of important indexes for measuring the quality of one internal mixer.
The most used sealing device of the existing internal mixer is a fork external pressure type sealing device which is composed of a fork steel plate, a supporting spring, a small oil cylinder, a pressing end cover, a fixed ring and a movable ring; because the fork external pressure type sealing device only has two stress points when being used for pressing the outer pressure of the end cover, the external pressure balance is difficult to control and the external pressure balance is used on the pressing end cover, the static ring and the dynamic ring can not be fully contacted when the pressing end cover is unbalanced in stress, and the phenomenon of powder leakage and material leakage can occur when the dynamic ring and the static ring contact the friction sealing surface with a gap when the rotor rotates; the phenomenon of leakage can also occur when the pressure applied to the rubber compound exceeds the external pressure of the sealing device, and only one sealing contact surface is arranged between the fixed ring and the movable ring, so that the rubber compound is easy to wear and damage, and the disassembly, assembly and maintenance are not easy due to the limited space. The long-term leakage can occur during the operation, which not only causes a great deal of waste of the sizing material and increases the production cost, but also influences the field management of enterprises and can not meet the actual use requirements. In order to solve the problems, the applicant submits an invention patent with application number 201720229144.3 named as a rotor sealing device of an internal mixer to the national intellectual property office, the recorded technical scheme can effectively prevent powder from leaking, frequent maintenance and part replacement are not needed, but the sealing performance of the single-moving ring and single-fixed ring sealing device can be further improved in practical use, and complete sealing and no material leakage are realized.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a double-acting ring and single-fixed ring interlocking internal pressure type sealing device of an internal mixer with better sealing effect, which can realize no material leakage completely, and the specific technical scheme is as follows:
a double-movable ring and single-fixed ring interlocking internal pressure type sealing device comprises a wear-resistant steel sleeve with a hollow structure, a first movable ring, a second movable ring and a fixed ring, wherein the wear-resistant steel sleeve is fixedly installed in the side wall of an internal mixing chamber of an internal mixer, one end of a rotor penetrates through the wear-resistant steel sleeve, the outer peripheral sides of the rotor are sequentially sleeved with the first movable ring and the second movable ring outwards, the first movable ring and the second movable ring are located between the inner peripheral side of the wear-resistant steel sleeve and the outer peripheral side of the rotor, the fixed ring is fixedly installed on the exposed end face of the wear-resistant steel sleeve through screws and is sleeved and tightly pressed on the outer peripheral sides of the first movable ring and the second movable ring, a key pin is installed between the first movable ring and the rotor in an interference manner, the rotor drives the first movable ring and the second movable ring to synchronously rotate through the key pin when rotating, a spring is installed in the; the other end of the ejector pin is contacted with the ejector pin, and one end of the ejector pin is arranged in the inner cavity of the first movable ring; and the other end is installed in the second rotating ring inner chamber, and first rotating ring inner chamber is greater than the second rotating ring inner chamber, and the countersunk screw is installed to the second rotating ring inner chamber, and the countersunk screw contacts with the top, and the relative antiport of first rotating ring, second rotating ring of spring elastic drive, first rotating ring, second rotating ring touch the stationary ring respectively about the inboard and produce the sealed effect of pressure friction and prevent that the rotor from leaking the material.
As a preferable scheme of the present invention, the outer peripheral side of the first moving ring is provided with a first step and a second step which protrude outward, the first step and the second step are separated to form a first groove, the outer peripheral side of the second moving ring is provided with a third step which protrudes outward, the inner peripheral side of the stationary ring is provided with a fourth step and a fifth step which protrude inward, the fourth step and the fifth step are separated to form a second groove, when the stationary ring is sleeved with the first moving ring and the second moving ring, the first step is embedded between the fourth step and the inner peripheral side of the wear-resistant steel sleeve, the fourth step is embedded in the first groove, the second step and the third step are embedded in the second groove, and the fifth step is embedded in the tail end of the second moving ring.
In a preferred embodiment of the present invention, the wear-resistant steel bushing, the first moving ring, the second moving ring, and the stationary ring are two and are respectively installed at the left and right ends of the rotor.
In a preferred embodiment of the present invention, the spring has a plurality of springs and is arranged around the central axis of the first rotating ring in an equi-circumferential manner.
In a preferred embodiment of the present invention, the wear-resistant steel sleeve is provided with a cooling water channel.
In a preferred embodiment of the present invention, the fixed ring is provided with a vertical process oil inlet hole, and the lubricating oil is injected into the friction portion between the fixed ring and the first and second moving rings from the process oil inlet hole.
As a preferable scheme of the present invention, the first moving ring, the second moving ring and the fixed ring are made of high hardness and high wear resistance materials.
The invention has the beneficial effects that: the double-acting ring, single stationary ring interlocking internal pressure formula sealing device is through the wear-resisting steel bushing of mutually supporting, first rotating ring, the second rotating ring, the stationary ring obtains good sealed effect, the rotor is at high-speed rotation during operation, first rotating ring, the synchronous rotation of second rotating ring is and wear-resisting steel bushing, the stationary ring is fixed motionless, first rotating ring, the reverse movement of second rotating ring is frictional contact stationary ring respectively under the spring action, wear-resisting steel bushing, first rotating ring, the second rotating ring, form multilayer step interlocking internal pressure formula seal structure between the stationary ring, the leakproofness is better, do not leave the clearance and can effectively prevent the powder leakage, need not frequent maintenance and renewal part, the cost is saved, satisfy the in-service use needs.
Drawings
FIG. 1 is a schematic view of the sealing device of the present invention in cooperation with a rotor;
FIG. 2 is a schematic view of the construction of the sealing device of the present invention;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is an exploded view of the wear-resistant steel sleeve, the first moving ring, the second moving ring and the stationary ring of the present invention;
fig. 5 is a schematic diagram of the distribution of the springs in the first rotating ring of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the positions or elements referred to must have specific orientations, be constructed and operated in specific orientations, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.
As shown in fig. 1 to 3, a double-movable ring and single-fixed ring interlocking internal pressure type sealing device comprises a wear-resistant steel sleeve 1 with a hollow structure, a first movable ring 2, a second movable ring 3 and a fixed ring 4, wherein the wear-resistant steel sleeve 1, the first movable ring 2, the second movable ring 3 and the fixed ring 4 are respectively provided with two parts and are respectively installed at the left end and the right end of a rotor 5, one end surface of the wear-resistant steel sleeve 1 is directly contacted with a sizing material, the other end surface is exposed outside, the wear-resistant steel sleeve 1 is fixedly installed in the side wall of a mixing chamber of a mixer through screws, one end of the rotor 5 penetrates through the wear-resistant steel sleeve 1, the outer side of the rotor is sequentially sleeved with the first movable ring 2 and the second movable ring 3, the first movable ring 2 and the second movable ring 3 are positioned between the inner side of the wear-resistant steel sleeve 1 and the outer side of the rotor 3, the fixed ring 4 is fixedly installed on the exposed end surface of the outer side of the wear-, key pins 6 are arranged among the first moving ring 2, the second moving ring 3 and the rotor 3 in an interference fit manner, the rotor 5 drives the first moving ring 2 and the second moving ring 3 to synchronously rotate through the key pins 6 when rotating, a spring 7 is arranged in an inner cavity of the first moving ring 2, and one end of the spring 7 is in contact with the inner wall of the first moving ring 2; the other end of the ejector pin is contacted with the ejector pin 8, and one end of the ejector pin 8 is arranged in the inner cavity of the first movable ring 2; and the other end is installed in 3 inner chambers of second rotating ring, the 2 inner chambers of first rotating ring are greater than the 3 inner chambers of second rotating ring, countersunk screw 9 is installed to the 3 inner chambers of second rotating ring, countersunk screw 9 contacts with top 8, the first rotating ring 2 of spring 7 elastic drive, the relative reverse motion of second rotating ring 3, first rotating ring 2 is to left then second rotating ring 3 is to right, first rotating ring 2, the friction contact respectively of second rotating ring 3 is inboard about the fixed ring 4 and produce the pressure friction sealing effect and prevent the rotor leakage, first rotating ring 2, second rotating ring 3, the mutual friction sealing cooperation of fixed ring 4 prevents rotor 5 leakage.
As shown in fig. 3 and 4, the outer periphery of the first moving ring 2 is provided with a first step 21 and a second step 22 which are protruded outwards, the first step 21 and the second step 22 are separated to form a first groove 23, the outer periphery of the second moving ring 3 is provided with a third step 31 which is protruded outwards, the inner periphery of the fixed ring 4 is provided with a fourth step 41 and a fifth step 42 which are protruded inwards, the fourth step 41 and the fifth step 42 are separated to form a second groove 43, when the fixed ring 4 is sleeved with the first moving ring 2 and the second moving ring 3, the first step 21 is embedded between the fourth step 41 and the inner periphery of the wear-resistant steel sleeve 1, the fourth step 41 is embedded in the first groove 23, the second step 22 and the third step 31 are embedded in the second groove 43, the fifth step 42 is embedded in the tail end of the second moving ring 3, and one end of the spring 7 drives the first moving ring 2 to move inwards; the other end drives the second movable ring 3 to move outwards through the top 8, the second step 22 is in contact with the fourth step 41, the third step 31 is in contact with the fifth step 42, the embedding fit is clearance fit, and the compressible spring 7 of the first movable ring 2 and the second movable ring 3 horizontally moves for 0.5mm and is completely sealed without a gap.
As shown in fig. 5, the springs 7 are arranged in an equi-circumferential manner around the central axis of the first moving ring 2, so as to ensure that the first moving ring 2 and the second moving ring 3 are stressed uniformly and can rub against the fixed ring 4, in this embodiment, the number of the springs 7 is preferably 8, the number of the springs 7 is flexibly increased according to the machine specification, preferably 8-16, the wear-resistant steel bushing 1 is provided with a cooling water channel 11 to prevent the wear-resistant steel bushing 1 from being damaged due to overhigh temperature, the fixed ring 4 is provided with a vertical process oil inlet hole 44, and lubricating oil is injected into the friction positions of the fixed ring 4 and the first moving ring 2 and the second moving ring 3 from the process oil inlet hole 44 to reduce the friction force.
Specifically, the first movable ring 2, the second movable ring 3 and the fixed ring 4 are made of high-hardness and high-wear-resistance materials, are of semi-annular combined detachable structures, are convenient to maintain and replace, and have the advantages that a, the sealing performance is good, and the powder leakage and the glue leakage cannot pollute the surrounding environment; b. the use of lubricating oil is less, and each set of sealing device is provided with only one oil filling hole; c. the used lubricating oil does not need specified grease, and the clean and impurity-free rubber compound softening oil is generally used; d. the used softening oil can be recovered and then used as the softening oil continuously, so that waste is not caused; e. no matter how much axial movement of the rotor occurs, the sealing performance is still effective.
The working state of the rotor 5 during high-speed rotation is used for concretely explaining the working principle of the invention, when the rotor 5 rotates at high speed, once powder leaks, the powder enters a gap between the wear-resistant steel bushing 1 and the rotor 5, the first movable ring 2, the second movable ring 3 and the rotor 5 rotate synchronously, the wear-resistant steel bushing 1 and the fixed ring 4 are fixed, the left end face of a first step 21 of the first movable ring 2 props against the gap of the wear-resistant steel bushing 1 to form a first layer of leakage-proof structure to prevent the powder from leaking, and if the powder continuously enters the gap between the first movable ring 2 and the wear-resistant steel bushing 1, the right end face of the first step 21 of the first movable ring 2 props against the left end face of a fourth step 41 of the fixed ring 4 to form a second layer of leakage-proof structure to prevent the powder from continuously; when powder enters between the first movable ring 2 and the fixed ring 4, the spring 7 drives the first movable ring 2 and the second movable ring 3 to move reversely, the left end face of the second step 22 of the first movable ring 2 is in friction contact with the right end face of the fourth step 41 of the fixed ring 4 to form a third-layer leakage-proof structure, the right end face of the third step 31 of the second movable ring 3 is in friction contact with the right end face of the fifth step 42 to form a fourth-layer leakage-proof structure, the sealing performance is still effective no matter the rotor has axial movement (limited by the fixed ring) or radial slight jumping (clearance fit of the movable ring and the fixed ring), the powder leakage and the glue leakage are effectively prevented from polluting the surrounding environment by blocking of the sealing structure, frequent maintenance and part replacement are not needed, and the cost is saved.
The above description is for the purpose of describing the invention in more detail with reference to specific preferred embodiments, and it should not be construed that the embodiments of the invention are limited to those described herein, and it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a double acting ring, single stationary ring interlocking internal pressure formula sealing device which characterized in that: the rotor comprises a wear-resistant steel sleeve with a hollow structure, a first moving ring, a second moving ring and a fixed ring, wherein the wear-resistant steel sleeve is fixedly arranged in the side wall of an internal mixing chamber of the internal mixer, one end of a rotor penetrates through the wear-resistant steel sleeve, the outer peripheral side of the rotor is sequentially sleeved with the first moving ring and the second moving ring outwards, the first moving ring and the second moving ring are positioned between the inner peripheral side of the wear-resistant steel sleeve and the outer peripheral side of the rotor, the fixed ring is fixedly arranged on the exposed end surface of the wear-resistant steel sleeve through screws and is sleeved and tightly pressed on the outer peripheral sides of the first moving ring and the second moving ring, a key pin is arranged between the first moving ring and the rotor in an interference manner, the rotor drives the first moving ring and the second moving ring to synchronously rotate through the key pin when rotating, a spring is arranged in the; the other end of the ejector pin is contacted with the ejector pin, and one end of the ejector pin is arranged in the inner cavity of the first movable ring; and the other end is installed in the second rotating ring inner chamber, and first rotating ring inner chamber is greater than the second rotating ring inner chamber, and the countersunk screw is installed to the second rotating ring inner chamber, and the countersunk screw contacts with the top, and the relative antiport of first rotating ring, second rotating ring of spring elastic drive, first rotating ring, second rotating ring touch the stationary ring respectively about the inboard and produce the sealed effect of pressure friction and prevent that the rotor from leaking the material.
2. A double acting ring, single fixed ring interlocking internal pressure type sealing device according to claim 1, wherein: the outer periphery of the first movable ring is provided with a first step and a second step which protrude outwards, the first step and the second step are separated to form a first groove, the outer periphery of the second movable ring is provided with a third step which protrudes outwards, the inner periphery of the fixed ring is provided with a fourth step and a fifth step which protrude inwards, the fourth step and the fifth step are separated to form a second groove, when the fixed ring is sleeved with the first movable ring and the second movable ring, the first step is embedded between the fourth step and the inner periphery of the wear-resistant steel sleeve, the fourth step is embedded into the first groove, the second step and the third step are embedded into the second groove, and the fifth step is embedded into the tail end of the second movable ring.
3. A double acting ring, single fixed ring interlocking internal pressure type sealing device according to claim 1 or 2, characterized in that: the wear-resistant steel bushing, the first movable ring, the second movable ring and the fixed ring are respectively provided with two wear-resistant steel bushings and are respectively arranged at the left end and the right end of the rotor.
4. A double acting ring, single fixed ring interlocking internal pressure type sealing device according to claim 1, wherein: the springs are arranged in a plurality of equal circumferences around the central shaft of the first movable ring.
5. A double acting ring, single fixed ring interlocking internal pressure type sealing device according to claim 1, wherein: the wear-resistant steel sleeve is provided with a cooling water channel.
6. A double acting ring, single fixed ring interlocking internal pressure type sealing device according to claim 1, wherein: the fixed ring is provided with a vertical process oil inlet hole, and lubricating oil is injected into the friction part of the fixed ring, the first movable ring and the second movable ring from the process oil inlet hole.
7. A double acting ring, single fixed ring interlocking internal pressure type sealing device according to claim 1, wherein: the first movable ring, the second movable ring and the fixed ring are made of high-hardness and high-wear-resistance materials.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018211053665 | 2018-07-12 | ||
| CN201821105366 | 2018-07-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209875954U true CN209875954U (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822216578.7U Active CN209875954U (en) | 2018-07-12 | 2018-12-27 | Double-acting ring and single-fixed ring interlocking internal pressure type sealing device |
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| CN (1) | CN209875954U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109780215A (en) * | 2018-07-12 | 2019-05-21 | 韦富农 | A kind of double movable ring, Dan Dinghuan interlock inner pressed sealing device |
| CN109780215B (en) * | 2018-07-12 | 2024-04-19 | 广东维钠智能密炼机械科技有限公司 | Double-moving-ring Shan Dinghuan interlocking internal-pressure sealing device |
-
2018
- 2018-12-27 CN CN201822216578.7U patent/CN209875954U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109780215A (en) * | 2018-07-12 | 2019-05-21 | 韦富农 | A kind of double movable ring, Dan Dinghuan interlock inner pressed sealing device |
| CN109780215B (en) * | 2018-07-12 | 2024-04-19 | 广东维钠智能密炼机械科技有限公司 | Double-moving-ring Shan Dinghuan interlocking internal-pressure sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109780215A (en) | 2019-05-21 |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210429 Address after: 529400 pingzhouwei en'an company, Juntang Town, Jiangmen City, Guangdong Province Patentee after: Guangdong Weina intelligent internal mixer Technology Co.,Ltd. Address before: No. 37 Shanggantun, Xiajiu Village, Chuanshan Town, Huanjiang Maonan Autonomous County, Hechi City, Guangxi Zhuang Autonomous Region Patentee before: Wei Funong |