CN209350676U - Hold sealed swivel nut - Google Patents

Abstract

The utility model discloses a kind of sealed swivel nuts in end, including sleeve and the helical blade being set on sleeve outer wall, at least one end face of the sleeve is equipped with sealed groove, sealing ring is equipped in the sealed groove, the two sides of the sealing ring are equipped with outer ring lip, the outer ring lip is towards the outside of sealing ring radial direction, and two outer ring lips are tilted to the two sides of sealing ring respectively.The sealed swivel nut in end described in the utility model uses the form of end sealing, and use the sealing ring with self-sealing effect, guarantee sealing effect, mandrel is prevented to be corroded, mandrel service life is improved, the replacement cycle of mandrel is extended, reduces production cost, it prevents corrosive liquid from flowing backwards simultaneously and enters material, promote downstream product quality.

Description

Hold sealed swivel nut

Technical field

The utility model relates to the utility model relates to rubber post-processing technology fields, and in particular to a kind of sealed spiral shell in end Set.

Background technique

Rubber after chemical synthesis or natural rubber it is acquired and agglomerate after, a large amount of water is contained on inside particles and surface Point, it not can be used directly the various modified process and rubber product in downstream industry.It, can after being handled by Waste water screen preliminary hydro-extraction To remove a large amount of moisture, then it is aided with subsequent other rubber post-processing drying equipments and packaging facilities, can be mentioned for downstream industry Blocky, granular, three kinds of forms of powdery are divided into according to the difference of type for the qualified preliminary product of rubber.The spiral shell of expansion-exsiccation machine Bar is composed of mandrel and multiple swivel nuts, stability, the charging form difference of rubber grain, rubber by rubber grain inlet amount The influence of the factors such as the water content difference of glue particle, in long-term unstable turn state, this process will lead to every two spiral shell The end face being in close contact between set generates the gap to differ in size everywhere.Inside micelle particle outside swivel nut and there is temperature in surface Spend that higher, pressure is biggish, has corrosive liquid, this liquid can be got into gap, lead to the corrosion of mandrel, because The reason of intensity, mandrel material selection structural alloy steel, the corrosion of unbearable such liquid.Mandrel belongs to non-in integral device Often important position, intensity can reduce after corrosion, and the risk of fracture increases, and service life reduces.And corrosive liquids is long-term It is present in the gap between swivel nut and mandrel the change that can generate color, can be squeezed out from gap under certain conditions, with Rubber grain enters downstream, affects to the quality of downstream product.

Utility model content

The it is proposed of the utility model in view of the above problems, and a kind of sealed swivel nut in end of researching and designing.The utility model is adopted Technological means is as follows:

A kind of sealed swivel nut in end, including sleeve and the helical blade being set on sleeve outer wall, the sleeve is at least One end face is equipped with sealed groove, is equipped with sealing ring in the sealed groove, the two sides of the sealing ring are equipped with outer ring lip Mouthful, the outer ring lip is towards the outside of sealing ring radial direction, and two outer ring lips are tilted to the two sides of sealing ring respectively.

Further, the width of the sealed groove is greater than the radial width of the sealing ring in sealed states, described The end cross-sectional of outer ring lip is sector, the arc surface of sector towards sealing ring axially inner side, one of the sector Radius edge is flushed with the lateral surface of outer ring lip.

Further, the internal diameter of the sealing ring is equal to the internal diameter of the sealed groove.

Further, the helical blade includes front and back, and the front is the face for applying thrust to material, described The outer wall of helical blade be equipped with wear-resisting cage plate, the wear-resisting cage plate include be attached at helical blade positive cage plate main body and The section for being placed on helical blade outside edges is the bending part of U-shaped, and the cage plate main body is structure as a whole with bending part, the set The edge of plate main body is removably fixed on sleeve, and the edge of the cage plate main body is embedded in the outer wall of sleeve and the cage plate main body Outer wall flushed with the outer wall of sleeve, the edge of the bending part is embedded in the back side of helical blade and the lateral wall of the bending part It is flushed with the back side of helical blade, the hardness of the wear-resisting cage plate is greater than the hardness of helical blade.

Further, hardfacing alloy layer is equipped on the outer bottom of the bending part, the hardness of the hardfacing alloy layer is big In the hardness of the wear-resisting cage plate.

Further, the corresponding central angle of the helical blade is 320 degree, and the helical blade is equipped with 4 screw fans The cricoid wear-resisting cage plate of shape, the corresponding central angle of each wear-resisting cage plate is 80 degree.

Further, the inner wall of the edge side of the bending part is equipped with arc-shaped retention bead circumferentially, The back side of the helical blade is equipped with the limiting groove cooperated with the retention bead.

Further, the opposite direction of edge joint towards the helical blade direction of rotation in the circumferential direction of adjacent wear-resisting cage plate inclines Tiltedly.

Further, the material of the wear-resisting cage plate is austenitic stainless steel, and the material of the hardfacing alloy layer is carbonization Tungsten hard alloy.

Further, the edge of the cage plate main body is fixed by screws on sleeve.

Compared with the prior art, the sealed swivel nut in end described in the utility model uses the form of end sealing, and uses tool There is the sealing ring of self-sealing effect, guarantee sealing effect, mandrel is prevented to be corroded, improves mandrel service life, extend mandrel Replacement cycle reduces production cost, while preventing corrosive liquid from flowing backwards and entering material, promotes downstream product quality.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the present embodiment.

Fig. 2 is cutaway view Amplified image at the A of Fig. 1.

Fig. 3 is the schematic diagram of Fig. 2 in sealed states.

Fig. 4 is enlarged drawing at the C of Fig. 3.

Fig. 5 is the right view of Fig. 1.

Fig. 6 is the B-B sectional view of Fig. 1.

Fig. 7 is the structural schematic diagram of the sealed swivel nut in end described in the utility model embodiment (without wear-resisting cage plate).

Fig. 8 is the schematic diagram of neighbouring wear-resistant swivel nut seam crossing in the utility model embodiment.

Specific embodiment

As shown in Figures 1 to 5, the sealed swivel nut in a kind of end, including sleeve 1 and the helical-blade being set on 1 outer wall of sleeve Piece 2, at least one end face of the sleeve 1 are equipped with sealed groove 10, and sealing ring 11 is equipped in the sealed groove, described close The two sides of seal 11 are equipped with outer ring lip 12, the outer ring lip 12 outside radial towards sealing ring 11, and two outer rings Lip 12 is tilted to the two sides of sealing ring respectively, since there are pressure for material itself, so that sealing ring 11 itself has self-sealing Effect.

The width of the sealed groove 10 is greater than the radial width of the sealing ring 11 in sealed states, the sealing ring 11 internal diameter is equal to the internal diameter of the sealed groove 10, forms cavity between the lateral surface and sealing ring of sealed groove 10 in this way 14, liquid enters cavity 14 from the gap between two swivel nuts, applies pressure to sealing ring 11, while applying to outer ring lip 12 Pressure realizes the self-sealing effect of better seal circle 11.The end cross-sectional of the outer ring lip 12 is sector 13, the sector Axially inner side of 13 arc surface towards sealing ring 11, the lateral surface of described fan-shaped 13 radius edge and outer ring lip 12 Flush so that in sealed states, the lateral surface of two outer ring lips 12 respectively with the bottom surface of sealed groove 10 and adjacent swivel nut Sealing surface fitting, and gap is also not present between the edge and sealing surface of outer ring lip 12, it is real under the pressure of material Now better self-sealing effect.

As shown in Fig. 1 and Fig. 5 to Fig. 7, sleeve 1 and helical blade 2 described in the present embodiment are integrated, the spiral Blade 2 includes front and back, and the front is the face for applying thrust to material, and the outer wall of the helical blade is equipped with wear-resisting Cage plate 3, the wear-resisting cage plate 3 include being attached at the positive cage plate main body 4 of helical blade 2 and being placed on outside 2 edge of helical blade The section in portion is the bending part 5 of U-shaped, and the cage plate main body 4 is structure as a whole with bending part 5, and the edge of the cage plate main body 4 can Disassembly is fixed on sleeve 1, the outer wall of the edge insertion sleeve 1 of the cage plate main body 4 and the outer wall and set of the cage plate main body 4 The outer wall of cylinder 1 flushes, and the edge of the bending part 5 is embedded in the back side of helical blade 2 and the lateral wall and spiral of the bending part 5 The back side of blade 2 flushes, and the hardness of the wear-resisting cage plate 3 is greater than the hardness of helical blade 2.

Hardfacing alloy layer 6 is equipped on the outer bottom of the bending part 5, the hardness of the hardfacing alloy layer 6 is greater than described The hardness of wear-resisting cage plate 3 is used in combination with wear-resisting cage plate 3 using hardfacing alloy layer 6, provides double shield for the abrasion of swivel nut, Further decrease the swivel nut degree of wear under same operating condition.The outer bottom of bending part 5 refers to the edge face contact with helical blade 2 Part outer surface, finally as the bushing of the edge surface of entire swivel nut and expansion-exsiccation machine friction structure each other.

The inner wall of the edge side of the bending part 5 is equipped with arc-shaped retention bead 7 circumferentially, the spiral The back side of blade 2 is equipped with the limiting groove 8 cooperated with the retention bead 7.

The corresponding central angle of the helical blade 2 is 320 degree, and it is cricoid that the helical blade is equipped with 4 spiral fan shapeds Wear-resisting cage plate 3, the corresponding central angle of each wear-resisting cage plate is 80 degree.Spiral fan shaped ring-type, which refers to, is seen as sector on axial visual angle Ring structure is the helical structure being bonded with helical blade at radial visual angle again.The design of separate structure, is easily installed, right In retention bead 7 being arranged and the case where limiting groove 8, wear-resisting cage plate is screwed in from the end of helical blade 2 one by one and by cage plate 4 edge of main body is fixed on sleeve, the case where for being not provided with retention bead 7 and limiting groove 8, is covered one by one to helical-blade Cage plate main body 4 is simultaneously fixed on sleeve by the edge of piece 2.The setting of split type wear-resisting cage plate is not only more convenient installation, And in case of concentrated wear, one of wear-resisting cage plate is only needed to change, the maintenance cost of equipment is reduced.The present embodiment In, the edge of the cage plate main body 4 is fixed by screws on sleeve 1, is fastened by screw, is applied to bending part 5 certain Radially inward pulling force makes bending part 5 sufficiently be connected to the edge of helical blade.

It is fillet at the internal bend of the bending part 5, the inner wall of the bending part 5 is bonded with the edge of helical blade 2. The material of the wear-resisting cage plate 3 is austenitic stainless steel, and the material of the hardfacing alloy layer 6 is Talide.

As shown in figure 8, the negative side of direction of rotation of the edge joint in the circumferential direction of adjacent wear-resisting cage plate 3 towards helical blade To inclination, that is to say, that on helical blade direction of rotation, the inclined end face positioned at the edge of the wear-resisting cage plate in front pushes down position The direction D in the inclined end face of the wear-resistant sleeve edges of boards edge at rear, figure is the direction of rotation of helical blade.It is rotated in this way in screw rod When, material can compress the seam crossing of wear-resisting cage plate to the reaction force of helical blade, and avoiding being used for a long time causes seam crossing to grind Damage even tilts.

Embodiment described above only describe the preferred embodiments of the invention, not to model of the invention It encloses and is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical side of the invention The various changes and improvements that case is made should all be fallen into the protection scope that claims of the present invention determines.

Claims (10)

1. a kind of sealed swivel nut in end, including sleeve and the helical blade being set on sleeve outer wall, it is characterised in that: the set At least one end face of cylinder is equipped with sealed groove, is equipped with sealing ring in the sealed groove, the two sides of the sealing ring are all provided with There is outer ring lip, the outer ring lip is towards the outside of sealing ring radial direction, and two outer ring lips are respectively to the two sides of sealing ring Inclination.

2. the sealed swivel nut in end according to claim 1, it is characterised in that: the width of the sealed groove is greater than described close The radial width of seal in sealed states, the end cross-sectional of the outer ring lip are sector, the arc surface direction of the sector One radius edge of the axially inner side of sealing ring, the sector is flushed with the lateral surface of outer ring lip.

3. the sealed swivel nut in end according to claim 2, it is characterised in that: the internal diameter of the sealing ring is equal to the sealing The internal diameter of groove.

4. the sealed swivel nut in end as claimed in any of claims 1 to 3, it is characterised in that: the helical blade packet Front and back is included, the front is the face for applying thrust to material, and the outer wall of the helical blade is equipped with wear-resisting cage plate, institute Stating wear-resisting cage plate includes being attached at the positive cage plate main body of helical blade and being placed on the section of helical blade outside edges as U-shaped Bending part, the cage plate main body is structure as a whole with bending part, and the edge of the cage plate main body is removably fixed on sleeve, The outer wall of edge insertion sleeve and the outer wall of the cage plate main body of the cage plate main body are flushed with the outer wall of sleeve, the bending The edge in portion is embedded in the back side of helical blade and the lateral wall of the bending part is flushed with the back side of helical blade, the wear-resistant sleeve The hardness of plate is greater than the hardness of helical blade.

5. the sealed swivel nut in end according to claim 4, it is characterised in that: be equipped with heap on the outer bottom of the bending part Soldering layer gold, the hardness of the hardfacing alloy layer are greater than the hardness of the wear-resisting cage plate.

6. the sealed swivel nut in end according to claim 5, it is characterised in that: the corresponding central angle of the helical blade is 320 degree, the helical blade is equipped with the cricoid wear-resisting cage plate of 4 spiral fan shapeds, and the corresponding central angle of each wear-resisting cage plate is 80 degree.

7. the sealed swivel nut in end according to claim 6, it is characterised in that: on the inner wall of the edge side of the bending part Equipped with arc-shaped retention bead circumferentially, the back side of the helical blade is equipped with the limit cooperated with the retention bead Groove.

8. the sealed swivel nut in end according to claim 6 or 7, it is characterised in that: in the circumferential direction of adjacent wear-resisting cage plate The opposite direction of edge joint towards helical blade direction of rotation tilts.

9. the sealed swivel nut in end according to claim 8, it is characterised in that: the material of the wear-resisting cage plate be austenite not Become rusty steel, and the material of the hardfacing alloy layer is Talide.

10. the sealed swivel nut in end according to claim 8, it is characterised in that: the edge of the cage plate main body passes through screw It is fixed on sleeve.