CN202112233U

CN202112233U - Tube bundle drier

Info

Publication number: CN202112233U
Application number: CN2011201774567U
Authority: CN
Inventors: 徐静; 马俊; 胡晓军; 吕岩峰; 张玉胜; 陈婷; 张颖; 金铭
Original assignee: JIANGSU MYANDE FOOD MACHINERY CO Ltd
Current assignee: Myande Group Co Ltd
Priority date: 2011-05-30
Filing date: 2011-05-30
Publication date: 2012-01-18
Anticipated expiration: 2021-05-30

Abstract

The utility model relates to a tube bundle drier, which belongs to the technical field of cereal machinery. A rotor shaft is arranged in the center of a tube bundle rotor of the tube bundle drier, a drive end of the rotor shaft is a fixed end, a driven end of the rotor shaft is a moving end, a double-row self-aligning roller bearing is mounted at the fixed end, a double-row cylindrical roller bearing is mounted at the moving end, the double-row cylindrical roller bearing comprises a bearing inner ring, a bearing outer ring and double-row cylindrical rollers supported between the bearing inner ring and the bearing outer ring, the bearing inner ring is sleeved on the rotor shaft in an interference fit manner, the bearing inner ring is capable of axially moving in the double-row cylindrical rollers, the inner end face and the outer end face of the bearing inner ring are axially fixed to the rotor shaft respectively through an inner press ring and an outer press ring, the outer peripheral face of the bearing outer ring is a spherical surface supported in a spherical rotating seat, and the spherical rotating seat is fixed in a bearing block. When the rotor shaft is elongated on heating, the rotor shaft can move in the cylindrical rollers along with the bearing inner ring, and the outer spherical peripheral surface of the bearing outer ring is supported in the spherical rotating seat so as to achieve self-aligning.

Description

A kind of pipe bundle drier

Technical field

The utility model relates to a kind of pipe bundle drier, belongs to the grain machinery technical field.

Background technology

Pipe bundle drier comprises the tube bank rotor; The tube bank centre of rotor is provided with armature spindle, feeds heat transfer medium in the tube bank, and armature spindle drives the rotation of tube bank rotor under the driving of drive unit; Material is added in the body by casing one end; Drop in the rotation tube bank it fully is heated, make material remove moisture and then drying through hot-air convection again, take away by air exhauster behind the Hot air quilt steam-laden.Tube bank is equipped with scraping wings on the rotor, makes the material thermally equivalent and moves to the discharging opening direction.

Because will expand after the heating of tube bank rotor, the relative support of the drive end of armature spindle is fixed, and is stiff end, the driven end of armature spindle is a free end, and with the elongation of compensation armature spindle, two ends are passed through bearings respectively on support.

Existing pipe bundle drier; The compensating form of some mobile terminal is: adopts bearing outer ring in bearing block, to move and compensates, but this structure, the distance that bearing outer ring moves is limited by bearing block; Distance is short, can not adapt to the occasion of large scale tube bank heat expansion distance.

Also the compensating form of some mobile terminal is: bearing block and bearing integral move or swing, but this structure is high to the bearing block processing request, is prone to get stuck.

Because the span between the two end supports point is big, coaxial difficulty needs aligning, more be to adopt self-aligning bearing, but self-aligning bearing is loosening easily after locking, and causes bearing enclose to slide, and causes restraining the rotor string easily and moves, and causes harmful effects such as bumping shell.

The utility model content

The purpose of the utility model is, overcomes the problem that exists in the prior art, provides a kind of aligning the reliable and big pipe bundle drier of nose balance amount.

For solving above technical problem, a kind of pipe bundle drier that the utility model provided comprises the tube bank rotor; Said tube bank centre of rotor is provided with armature spindle; The drive end of said armature spindle is a stiff end, and driven end is the mobile terminal, and said stiff end is equipped with double-row self-aligning roller bearing; Said mobile terminal is equipped with Biserial cylindrical roller bearing, and said Biserial cylindrical roller bearing comprises bearing inner race, bearing outer ring and is supported on the double-row cylindrical roller between the said bearing enclose; Said bearing inner race is sleeved on the said armature spindle, between the two interference fit; Said bearing inner race can axially move in said double-row cylindrical roller, and the interior outer face of bearing inner race is respectively through interior hold-down ring and external compression ring and said armature spindle realization axial restraint; The outer peripheral face of said bearing outer ring is sphere and is supported in the sphere rotating seat that said sphere rotating seat is fixed in the bearing block.

With respect to prior art, the utility model has been obtained following beneficial effect: bearing inner race is fixed on the armature spindle, when armature spindle receives thermal stretching; Armature spindle can move in cylindrical roller together with bearing inner race; Bearing outer ring and bearing block relative fixed are compared with self-aligning bearing, and the axially movable length of armature spindle increases greatly; And can make bearings at both ends seat maintenance level, stressed even; The outer peripheral face of bearing outer ring is sphere and is supported in the sphere rotating seat, through the rotation of bearing outer ring in the sphere rotating seat, can play the effect of aligning.

As the preferred version of the utility model, the length of said bearing inner race is greater than the length of said bearing outer ring.The length of lengthening bearing inner race can make axial compensation rate bigger.

Description of drawings

Fig. 1 is the structural representation of the utility model pipe bundle drier.

Fig. 2 is the enlarged drawing at A position among Fig. 1.

Fig. 3 is the enlarged drawing at B position among Fig. 1.

Among the figure: 1 tube bank rotor; 2 armature spindles; 3 double-row self-aligning roller bearings; 4 Biserial cylindrical roller bearings; The 4a bearing inner race; The 4b cylindrical roller; The 4c bearing outer ring; 4d sphere rotating seat; 5 bearing blocks; Hold-down ring in 6; 7 external compression rings; 8 locking nuts.

The specific embodiment

Like Fig. 1, Fig. 2 and shown in Figure 3, the pipe bundle drier of the utility model, the center of tube bank rotor 1 is provided with armature spindle 2; The drive end of armature spindle 2 is a stiff end; Driven end is the mobile terminal, and stiff end is equipped with double-row self-aligning roller bearing 3, and the mobile terminal is equipped with Biserial cylindrical roller bearing 4.

As shown in Figure 2, Biserial cylindrical roller bearing comprises bearing inner race 4a, bearing outer ring 4c and is supported on the double-row cylindrical roller 4b between the bearing enclose; Bearing inner race 4a is sleeved on the armature spindle 2, between the two interference fit.Bearing inner race 4a can in double-row cylindrical roller 4b, axially move and length greater than the length of bearing outer ring 4c; Hold-down ring 6 and external compression ring 7 in the interior outer face of bearing inner race 4a is respectively equipped with; Interior hold-down ring 6 is between the shaft shoulder of bearing inner race 4a and armature spindle 2, and locking nut 8 is pressed in the outside of external compression ring 7 with external compression ring 7, bearing inner race 4a axial restraint.The outer peripheral face of bearing outer ring 4c is sphere and is supported in the sphere rotating seat that sphere rotating seat 4d is fixed in the bearing block 5.

In the work, bearing inner race 4a is fixed on the armature spindle 2, and when tube bank rotor 1 received thermal stretching, armature spindle 2 was to mobile terminal expansion and mobile.This moment, bearing outer ring 4c and bearing block 5 were fixed; Tube bank rotor 1, armature spindle 2 and bearing inner race 4a slide in double-row cylindrical roller 4b through bearing inner race 4a and realize whole moving; The length that axially-displaceable moves is bigger, and can make bearings at both ends seat maintenance level, and is stressed even.The outer peripheral face of bearing outer ring 4c is sphere and is supported among the sphere rotating seat 4d, through the rotation of bearing outer ring 4c in sphere rotating seat 4d, can play the effect of aligning.

Except that the foregoing description, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.

Claims

1. pipe bundle drier; Comprise the tube bank rotor, said tube bank centre of rotor is provided with armature spindle, and the drive end of said armature spindle is a stiff end; Driven end is the mobile terminal; Said stiff end is equipped with double-row self-aligning roller bearing, it is characterized in that: said mobile terminal is equipped with Biserial cylindrical roller bearing, and said Biserial cylindrical roller bearing comprises bearing inner race, bearing outer ring and is supported on the double-row cylindrical roller between the said bearing enclose; Said bearing inner race is sleeved on the said armature spindle, between the two interference fit; Said bearing inner race can axially move in said double-row cylindrical roller, and the interior outer face of bearing inner race is respectively through interior hold-down ring and external compression ring and said armature spindle realization axial restraint; The outer peripheral face of said bearing outer ring is sphere and is supported in the sphere rotating seat that said sphere rotating seat is fixed in the bearing block.

2. pipe bundle drier according to claim 1 is characterized in that: the length of said bearing inner race is greater than the length of said bearing outer ring.