CN212338176U - Graphene sealing device of internal mixer - Google Patents

Abstract

The utility model relates to a graphite alkene sealing device of banbury mixer, including rotating ring, stationary ring, graphite and compel tight unit, the rotating ring suit is at the rotor periphery side of banbury mixer, transition fit and installation key round pin between rotating ring and the rotor, drive the rotating ring synchronous revolution through the key round pin when the rotor rotates, the stationary ring is motionless when the rotating ring rotates, because graphite inlays on the tip sealing surface in the stationary ring, peel off graphite alkene between rotating ring and the stationary ring in the sealed motion process of mechanical contact friction, graphite alkene helps the lubrication thereby reaches the oil-free self-lubricating purpose; the use cost is greatly reduced, and the requirements of energy conservation and environmental protection are also met; meeting the actual use requirement.

Description

Graphene sealing device of internal mixer

Technical Field

The utility model relates to a banbury mixer field, concretely relates to graphite alkene sealing device of banbury mixer.

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 a patent application with the application number of 201822216578.7 and the name of double-acting ring and single-fixed ring interlocking internal pressure type sealing device to the national intellectual property office, the technical scheme recorded by the patent application can effectively prevent powder from leaking, parts do not need to be frequently maintained and replaced, and the sealing is completely realized without material leakage.

SUMMERY OF THE UTILITY MODEL

There is the defect to prior art, the utility model discloses how to solve sealing device high technical problem of the temperature that generates heat, provide a graphite alkene sealing device of banbury mixer for this reason, concrete technical scheme is as follows:

the utility model provides a graphite alkene sealing device of banbury mixer, includes rotating ring, stationary ring, graphite and compels tight unit, and the rotating ring suit is at the rotor periphery side of banbury mixer, and transition fit and installation key round pin between rotating ring and the rotor, and the rotor drives the rotating ring synchronous revolution through the key round pin when rotating, and the stationary ring is fixed motionless, and graphite is inlayed on the sealed face of stationary ring tip, compels tight unit drive rotating ring top tight stationary ring, and graphite is rubbed and is produced graphite.

As a preferred scheme of the utility model, there are 1 each of rotating ring, stationary ring, compel tight unit include compel tight nut and spring, the stationary ring is fixedly mounted in the side wall glasses wallboard of banburying chamber of the Banbury mixer, the rotor is from inside to outside to suit stationary ring, rotating ring, gasket sequentially, compel tight nut suit on the external screw thread of the rotor, compel tight nut cavity mount spring, one end of spring is against the inner wall of compel tight nut; the other end of the fixed ring is propped against the gasket, and the screwing depth of the packing nut into the rotor is adjusted so that the movable ring presses the sealing surface of the end part of the fixed ring.

As an optimized scheme of the utility model, still include wear-resisting steel bushing and carbide ring, wear-resisting steel bushing, carbide ring, rotating ring, stationary ring respectively have 1, wear-resisting steel bushing fixed mounting is in the side wall glasses wallboard of banburying chamber, rotor one end is passed wear-resisting steel bushing and the periphery side suit rotating ring, the stationary ring passes through screw fixed mounting and is compressed tightly on the periphery side of rotating ring on the exposed terminal surface of wear-resisting steel bushing and suit, the packing unit includes packing screw and spring, rotating ring inner chamber installation spring, packing screw, one end of spring is pushed against the rotor lateral wall; the other end of the hard alloy ring is propped against the tightening screw, and the hard alloy ring is in friction contact with the graphite.

As a preferred scheme of the utility model, still include wear-resisting steel bushing, stationary ring respectively have 1, and the rotating ring has 2 and is first rotating ring and second rotating ring respectively, compel tight unit including compel tight screw, spring and top, the stationary ring passes through screw fixed mounting on the exposed terminal surface of wear-resisting steel bushing, and wear-resisting steel bushing fixed mounting is in the banburying chamber lateral wall of banburying machine, and rotor one end passes wear-resisting steel bushing and the periphery side is outwards suit first rotating ring, second rotating ring in proper order, and the stationary ring compresses tightly at first rotating ring, second rotating ring periphery side, and graphite has two sets, and graphite of each group has a plurality of graphite, and first rotating ring inner chamber installation spring, spring one end and first rotating ring inner wall contact; 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 arranged in an inner cavity of a second movable ring, the inner cavity of the first movable ring is larger than that of the second movable ring, a tightening screw is arranged in the inner cavity of the second movable ring and is in contact with the top, the spring elastically drives the first movable ring and the second movable ring to move oppositely relatively, and the first movable ring and the second movable ring are in frictional contact with graphite.

As an optimized scheme of the utility model, still include wear-resisting steel bushing and carbide ring, wear-resisting steel bushing, stationary ring respectively have 1, and the rotating ring has 2 to be first rotating ring and second rotating ring respectively, and carbide ring has 2 to be first carbide ring and second carbide ring respectively, compel tight unit includes compel tight screw, spring and top, and rotor one end is passed wear-resisting steel bushing and the periphery side is in proper order outwards suit first rotating ring, second rotating ring, and the stationary ring compresses tightly at first rotating ring, second rotating ring periphery side, and the stationary ring inner chamber is installed two sets of graphite, and each set of graphite has a plurality of graphite, installs first carbide ring between first rotating ring and the stationary ring, installs the second carbide ring between second rotating ring and the stationary ring, and the spring is installed to the first rotating ring inner chamber, and spring one end contacts with first rotating ring inner wall; 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 of the first rotating ring is arranged in an inner cavity of a second rotating ring, the inner cavity of the first rotating ring is larger than that of the second rotating ring, a tightening screw is arranged in the inner cavity of the second rotating ring, the tightening screw is in contact with the top, the spring elastically drives the first rotating ring and the second rotating ring to move oppositely, and the first rotating ring and the second rotating ring respectively drive the first hard alloy ring and the second hard alloy ring to be in frictional contact with graphite.

As a preferred embodiment of the present invention, the springs are arranged in a plurality of and equally circumferential rows around the center axis of the rotating ring.

The utility model has the advantages that: the fixed ring is fixed when the movable ring rotates, and the graphite is embedded on the sealing surface of the inner end part of the fixed ring, so that graphene is stripped between the movable ring and the fixed ring in the mechanical contact friction sealing movement process (a mechanical stripping method), and the graphene is beneficial to lubrication so as to achieve the purpose of oil-free self-lubrication; the use cost is greatly reduced, and the requirements of energy conservation and environmental protection are also met; meeting the actual use requirement.

Drawings

FIG. 1 is a schematic view of a first embodiment of a sealing device of the present invention engaged with a rotor;

fig. 2 is a schematic structural view of a first embodiment of the sealing device of the present invention;

FIG. 3 is an enlarged view at B in FIG. 2;

fig. 4 is an exploded view of a first embodiment of the sealing device of the present invention;

FIG. 5 is a schematic view of a second embodiment of a sealing device of the present invention engaged with a rotor;

fig. 6 is a schematic structural view of a second embodiment of the sealing device of the present invention;

FIG. 7 is an enlarged view at C in FIG. 6;

fig. 8 is an exploded view of a second embodiment of the sealing device of the present invention;

fig. 9 is a schematic view of a third embodiment of the sealing device of the present invention engaged with a rotor;

fig. 10 is a schematic structural view of a third embodiment of the sealing device of the present invention;

FIG. 11 is an enlarged view at D of FIG. 10;

fig. 12 is an exploded view of a third embodiment of the sealing device of the present invention;

figure 13 is a schematic view of a fourth embodiment of the sealing device of the present invention engaged with a rotor;

fig. 14 is a schematic structural view of a fourth embodiment of the sealing device of the present invention;

FIG. 15 is an enlarged view at E in FIG. 14;

fig. 16 is an exploded view of a fourth embodiment of the sealing device of the present invention;

fig. 17 is a schematic diagram of the distribution position of graphite in the sealing device 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", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the indicated position or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 ~ 17, a graphite alkene sealing device of banbury mixer, including rotating ring 1, the stationary ring 2, graphite 3 and compel tight unit, 1 suit of rotating ring is at 4 periphery sides of the rotor of banbury mixer, transition fit and installation key round pin 5 between rotating ring 1 and the rotor 4, rotor 4 drives rotating ring 1 synchronous revolution through key round pin 5 during the rotation, graphite 3 inlays on 2 end seal faces of stationary ring, graphite 3 is arranged around 2 center pin circumference of stationary ring, compel tight unit drive rotating ring 1 top tight stationary ring 2 to produce sealed effect, graphite 3 can produce graphite alkene by the friction in the rotating process of rotating ring 1, reach self-lubricating effect.

The first implementation mode comprises the following steps: as shown in fig. 1 to 4, a graphene sealing device of an internal mixer comprises a rotating ring 1, a fixed ring 2, graphite 3 and a packing unit, wherein the rotating ring 1 and the fixed ring 2 are respectively provided with 1, the packing unit comprises a packing nut 6 and a spring 7, the rotating ring 1 and a rotor 4 are in transition fit and are provided with a key pin 5, the rotor 4 drives the rotating ring 1 to synchronously rotate through the key pin 5 when rotating, the graphite 3 is embedded in a sealing surface at the end part of the fixed ring, one group of graphite is provided, each group of graphite is provided with a plurality of graphites, the fixed ring 2 is fixedly arranged in a side wall glasses wallboard of the internal mixer, the rotor 4 is sequentially sleeved with the fixed ring 2, the rotating ring 1 and a gasket 8 from inside to outside, the rotor 4 is in threaded connection with the packing nut 6, the spring 7 is arranged in an inner cavity of the packing nut, and one end of; the other end is supporting gasket 8, twists reverse and compels tight nut 6 along rotor axial displacement, compels tight nut 6 drive spring 7, gasket 8, rotating ring 1 and compresses tightly the sealed face of stationary ring 2 along axial displacement and produce the sealed effect of friction and prevent the sizing material and leak, simultaneously because inlay on the sealed face of stationary ring has graphite material, produces graphite alkene between mechanical contact friction seal in-process rotating ring and the stationary ring, sealing device A has two and seals about the rotor.

The second embodiment: as shown in figures 5-8, the graphene sealing device of the internal mixer comprises a moving ring 1, a fixed ring 2, graphite 3, a packing unit, a wear-resistant steel sleeve 9 and a hard alloy ring 10, wherein 1 wear-resistant steel sleeve 9, a hard alloy ring 10, a moving ring 1 and a fixed ring 2 are respectively arranged, the wear-resistant steel sleeves are fixedly arranged in a side wall eyeglass wallboard of the internal mixer, one end of a rotor 4 penetrates through the wear-resistant steel sleeve 9, the moving ring 1 is sleeved on the outer peripheral side of the rotor 4, the fixed ring 2 is fixedly arranged on the exposed end face of the wear-resistant steel sleeve 9 through a screw 2a and is sleeved and tightly pressed on the outer peripheral side of the moving ring 1, the graphite 3 is embedded on a sealing face of the end part of the fixed ring, each group of graphite comprises a plurality of graphites, the moving ring 1 and the rotor 4 are in transition fit and provided with a key pin 5, the moving ring 1 is driven to synchronously rotate through the key pin 5 when the rotor 4 rotates, the screw 11 is tightly pressed, and one end of the spring 7 is propped against the side wall of the rotor 4; the other end of the rotor 4 is propped against the tightening screw 11, when the rotor 4 rotates at a high speed to work, the rotor 4 drives the moving ring 1 and the hard alloy ring 10 to synchronously rotate, the wear-resistant steel bushing 9 and the fixed ring 2 are fixed, the hard alloy ring 10 is in friction contact with the graphite 3, the graphite 3 is rubbed to generate graphene, two sealing devices A are used for sealing the left side and the right side of the rotor, and two sealing devices A are used for sealing the left side and the right side of the rotor.

The third embodiment is as follows: as shown in fig. 9 to 12, a graphene sealing device of an internal mixer comprises a moving ring, a fixed ring 2, graphite 3, a clamping unit and a wear-resistant steel sleeve 9, wherein 1 of the wear-resistant steel sleeve 9 and the fixed ring 2 is provided, 2 moving rings are respectively a first moving ring 1a and a second moving ring 1b, the clamping unit comprises a clamping screw 11, a spring 7 and a top head 12, the fixed ring 2 is fixedly mounted on the exposed end surface of the wear-resistant steel sleeve 9 through the screw 2a, the wear-resistant steel sleeve is fixedly mounted in a spectacle wall plate on the side wall of the internal mixer, the graphite is embedded on a sealing surface at the end part of the fixed ring, one end of a rotor 4 penetrates through the wear-resistant steel sleeve 9, the outer peripheral side of the rotor is sequentially sleeved with the first moving ring 1a and the second moving ring 1b, the fixed ring 2 is tightly pressed on the outer peripheral sides of the first moving ring 1a and the second moving ring 1b, the first moving ring, the second moving ring and the rotor are in transition fit and provided with a key pin, two groups of graphite 3 are provided, each group of graphite 3 is provided with a plurality of graphite, a spring 7 is arranged in the inner cavity of the first movable ring 1a, and one end of the spring 7 is in contact with the inner wall of the first movable ring 1 a; the other end of the ejector rod is contacted with the ejector head 12, and one end of the ejector head 12 is arranged in the inner cavity of the first movable ring 1 a; and the other end is installed in the inner chamber of second rotating ring 1b, the inner chamber of first rotating ring 1a is greater than the inner chamber of second rotating ring 1b, the inner chamber of second rotating ring 1b is installed and is forced tight screw 11, it contacts with top 12 to force tight screw 11, spring 7 elastic drive first rotating ring 1a, relative reverse motion of second rotating ring 1b, first rotating ring 1a is to the left then second rotating ring 1b is to the right, a set of graphite in first rotating ring 1a frictional contact left side, a set of graphite in second rotating ring 1b frictional contact right side, sealing device A has two and seals about the rotor.

The fourth embodiment: as shown in fig. 13 to 16, a graphene sealing device of an internal mixer comprises a moving ring 1, a fixed ring 2, graphite 3, a packing unit, a wear-resistant steel sleeve 9 and a hard alloy ring, wherein 1 of each of the wear-resistant steel sleeve 9 and the fixed ring 2 is provided, 2 of the moving rings are respectively a first moving ring 1a and a second moving ring 1b, 2 of the hard alloy rings are respectively a first hard alloy ring 10a and a second hard alloy ring 10b, graphite is embedded on a sealing surface of an end portion of the fixed ring, the wear-resistant steel sleeve is fixedly installed in a side wall glass wallboard of the internal mixer chamber, the packing unit comprises a packing screw 11, a spring 7 and a top 12, one end of a rotor 4 penetrates through the wear-resistant steel sleeve 9 and is sequentially sleeved outside the outer peripheral sides of the first moving ring 1a and the second moving ring 1b, the fixed ring 2 is fixedly installed on an exposed end surface of the wear-resistant steel sleeve 9 through a screw 2a, the fixed ring 2 is tightly pressed on the first moving ring 1a and the second moving ring 1b, two groups of graphite 3 are provided, each group of graphite 3 is provided with a plurality of graphites, a first hard alloy ring 10a is arranged between the first movable ring 1a and the fixed ring 2, a second hard alloy ring 10b is arranged between the second movable ring 1b and the fixed ring 2, a spring 7 is arranged in the inner cavity of the first movable ring 1a, and one end of the spring 7 is in contact with the inner wall of the first movable ring 1 a; the other end of the ejector rod is contacted with the ejector head 12, and one end of the ejector head 12 is arranged in the inner cavity of the first movable ring 1 a; the other end of the first moving ring 1a is arranged in an inner cavity of a second moving ring 1b, the inner cavity of the first moving ring 1a is larger than that of the second moving ring 1b, a clamping screw 11 is arranged in the inner cavity of the second moving ring 1b, the clamping screw 11 is in contact with a top 12, a spring 7 elastically drives the first moving ring 1a and the second moving ring 1b to move oppositely, the first moving ring 1a and the second moving ring 1b respectively drive a first hard alloy ring 10a and a second hard alloy ring 10b to be in frictional contact with graphite 3, namely, the first moving ring 1a drives the first hard alloy ring 10a to be in frictional contact with the graphite 3 on the left side, the second moving ring 1b drives the second hard alloy ring 10b to be in frictional contact with the graphite 3 on the right side, and two sealing devices A are used for sealing left and right sides of rotors.

Specifically, in the above embodiment, the springs are arranged in a plurality of equal circumferences around the central axis of the rotating ring 1, so as to ensure sufficient driving force and uniform stress.

The above description is provided for the purpose of describing the present invention in more detail with reference to the preferred embodiments, and it should not be construed that the present invention is limited to these descriptions, and it will be apparent to those skilled in the art that the present invention can be implemented in many ways without departing from the spirit and scope of the present invention.

Claims (6)

1. The utility model provides a graphite alkene sealing device of banbury mixer which characterized in that: including rotating ring, stationary ring, graphite and compel tight unit, the rotating ring suit is at the rotor periphery side of banbury mixer, transition fit and installation key round pin between rotating ring and the rotor, drives the rotating ring synchronous revolution through the key round pin when the rotor rotates, and the stationary ring is fixed motionless, and graphite is inlayed on the sealed face of stationary ring tip, compels tight unit drive rotating ring top tight stationary ring, and graphite is rubbed and is produced graphite alkene.

2. The graphene sealing device of the internal mixer according to claim 1, wherein: the movable ring and the fixed ring are respectively provided with 1, the clamping unit comprises a clamping nut and a spring, the fixed ring is fixedly arranged in a side wall glasses wallboard of a mixing chamber of the internal mixer, the rotor is sequentially sleeved with the fixed ring, the movable ring and a gasket from inside to outside, the clamping nut is sleeved on an external thread of the rotor, the spring is arranged in an inner cavity of the clamping nut, and one end of the spring is propped against the inner wall of the clamping nut; the other end of the fixed ring is propped against the gasket, and the screwing depth of the packing nut into the rotor is adjusted so that the movable ring presses the sealing surface of the end part of the fixed ring.

3. The graphene sealing device of the internal mixer according to claim 1, wherein: the rotor comprises a rotor body, a rotor body and a fixed ring, wherein the rotor body is provided with a side wall, the side wall is provided with a wear-resistant steel bushing, the side wall is provided with a hard alloy ring, the side wall is provided with a rotating ring and a fixed ring, the fixed ring is fixedly arranged on the exposed end surface of the wear-resistant steel bushing through a screw and is sleeved and tightly pressed on; the other end of the hard alloy ring is propped against the tightening screw, and the hard alloy ring is in friction contact with the graphite.

4. The graphene sealing device of the internal mixer according to claim 1, wherein: the clamping device comprises a clamping unit and a clamping unit, wherein the clamping unit comprises a clamping screw, a spring and a top, the fixed ring is fixedly arranged on the exposed end face of the wear-resistant steel sleeve through the screw, the wear-resistant steel sleeve is fixedly arranged in a side wall spectacle wallboard of the mixing chamber, 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 fixed ring is tightly pressed on the outer peripheral sides of the first movable ring and the second movable ring, two groups of graphite are arranged, each group of graphite is provided with a plurality of graphites, the spring is arranged in the inner cavity of the first movable ring, and one end of the spring is contacted with the inner wall of the first movable ring; 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 arranged in an inner cavity of a second movable ring, the inner cavity of the first movable ring is larger than that of the second movable ring, a tightening screw is arranged in the inner cavity of the second movable ring and is in contact with the top, the spring elastically drives the first movable ring and the second movable ring to move oppositely relatively, and the first movable ring and the second movable ring are in frictional contact with graphite.

5. The graphene sealing device of the internal mixer according to claim 1, wherein: the clamping unit comprises a clamping screw, a spring and a top head, 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 fixed ring is tightly pressed on the outer peripheral sides of the first moving ring and the second moving ring, two groups of graphite are arranged in an inner cavity of the fixed ring, each group of graphite comprises a plurality of graphite, the first hard alloy ring is arranged between the first moving ring and the fixed ring, the second hard alloy ring is arranged between the second moving ring and the fixed ring, the spring is arranged in the inner cavity of the first moving ring, and one end of the spring is contacted with the inner wall of the first moving ring; 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 of the first rotating ring is arranged in an inner cavity of a second rotating ring, the inner cavity of the first rotating ring is larger than that of the second rotating ring, a tightening screw is arranged in the inner cavity of the second rotating ring, the tightening screw is in contact with the top, the spring elastically drives the first rotating ring and the second rotating ring to move oppositely, and the first rotating ring and the second rotating ring respectively drive the first hard alloy ring and the second hard alloy ring to be in frictional contact with graphite.

6. The graphene sealing device of the internal mixer according to any one of claims 2 to 5, wherein: the springs are arranged in a plurality of equal circumferences around the central shaft of the movable ring.

Images