CN211887439U

CN211887439U - Replaceable wear-resistant sleeve for spiral pusher mandrel

Info

Publication number: CN211887439U
Application number: CN202020006431.XU
Authority: CN
Inventors: 杨超; 高建生; 卢仁伟; 王存林
Original assignee: CSSC Nanjing Luzhou Machine Co Ltd
Current assignee: CSSC Nanjing Luzhou Machine Co Ltd
Priority date: 2020-01-02
Filing date: 2020-01-02
Publication date: 2020-11-10
Anticipated expiration: 2030-01-02

Abstract

The utility model relates to a spiral pusher mandrel is with removable wear-resisting cover, wear-resisting cover is including wear-resisting cover body, wear-resisting cover body is the tubular structure system has the bellied card limit of round on the wear-resisting cover body, and wear-resisting cover body is convex with the cross sectional shape of card limit at length direction, and wear-resisting cover is installed behind the connecting hole the excircle size of wear-resisting cover body slightly is less than mandrel excircle size, card limit and the laminating of mandrel hole. The utility model has the advantages that after the wear-resisting cover of spiral pusher mandrel connecting hole installation carbide, can not contact with the material, can not cause connecting hole wearing and tearing and damage under the normal use condition, can guarantee that spiral pusher does not take place because of the defective unbalance problem that produces of quality, improvement spiral pusher life-span and spiral shell machine operating stability crouches. If the wear-resistant sleeve is worn or damaged and needs to be repaired, the wear-resistant sleeve can be directly replaced, and the device is convenient to maintain, short in time, low in cost and good in effect.

Description

Replaceable wear-resistant sleeve for spiral pusher mandrel

Technical Field

The utility model relates to a spiral shell machine abrasionproof decreases device crouches, concretely relates to spiral pusher mandrel is with removable wear-resisting cover belongs to engineering machine tool technical field.

Background

The horizontal screw centrifuge is a sedimentation device for horizontal screw discharging and continuous operation, and the working principle is as follows: the rotary drum and the screw rotate at a high speed in the same direction at a certain difference, the materials are continuously introduced into a distribution bin of the screw conveyor through a feeding pipe, enter the rotary drum after being accelerated, the heavier solid matters are deposited on the wall of the rotary drum to form a slag deposit layer under the action of centrifugal force, and the screw conveyor continuously pushes the deposited solid matters to the conical end of the rotary drum and pushes the solid matters out of the machine through a slag outlet. Several connecting holes are uniformly distributed on the spindle of the screw conveyor, so that materials enter the rotary drum from the material distribution bin to start to be separated, and in the process, the materials can rub against the connecting holes, so that the connecting holes are abraded, the abrasion loss is increased along with the increase of the operation time, the abrasion is uneven, and finally the screw conveyor generates larger unbalance, so that the vibration intensity of the whole horizontal screw conveyor is increased, and the horizontal screw conveyor cannot operate. For some special materials, such as oil sludge, which contains more hard particle impurities, the abrasion phenomenon is particularly obvious, and the special materials need to be returned to a factory after being used for a period of time to repair the screw pusher again.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: aiming at the defects in the prior art, the replaceable wear-resistant sleeve for the spindle of the screw pusher is provided, so that the wear generated by the connecting hole of the screw conveyor can be reduced as much as possible.

In order to reach above purpose, the utility model provides a spiral pusher mandrel is with removable wear-resisting cover, wear-resisting cover is installed in the epaxial connecting hole of spiral pusher mandrel, wear-resisting cover is including wear-resisting cover body, wear-resisting cover body is the tubular structure system has the bellied card limit of round on the wear-resisting cover body, and wear-resisting cover body is convex with card limit in length direction's cross sectional shape, and wear-resisting cover is installed behind the connecting hole the excircle size of wear-resisting cover body slightly is less than mandrel excircle size, card limit and the laminating of mandrel hole.

The utility model discloses set up connecting hole department on spiral pusher mandrel, the wear-resisting cover of installation carbide, when the material got into the rotary drum from the cloth storehouse, not contacted with the mandrel connecting hole, but entered the rotary drum through the wear-resisting cover of carbide, because the wear resistance of carbide material is very good, the washing away of material can not lead to the fact wearing and tearing almost. When the wear-resistant sleeve is worn or damaged greatly due to special materials or extreme use conditions, the wear-resistant sleeve can be replaced directly, and the device is quick and convenient.

Further, the inner diameter of the wear-resistant sleeve body is 100 x 72mm, the height is 24mm, and the thickness is 10 mm.

Further, the length of card limit is 5mm, and the thickness is 6 mm.

Furthermore, a first bonding layer is arranged on the outer surface of the wear-resistant sleeve body.

Furthermore, a second bonding layer is arranged on the upper surface of the clamping edge.

Further, the first adhesive layer is connected to the second adhesive layer.

Furthermore, the first bonding layer and the second bonding layer are made of adhesives.

Further, the thickness of the first bonding layer and the second bonding layer is 0.05 mm.

Further, the wear-resisting sleeve consists of a lining and an alloy sleeve, and the lining is arranged on the outer circle of the alloy sleeve.

Furthermore, an O-shaped ring groove for installing an O-shaped ring is formed in the outer circle of the bushing, so that the abrasion-resistant sleeve is prevented from being affected by materials.

The utility model has the advantages that after the wear-resisting cover of spiral pusher mandrel connecting hole installation carbide, can not contact with the material, can not cause connecting hole wearing and tearing and damage under the normal use condition, can guarantee that spiral pusher does not take place because of the defective unbalance problem that produces of quality, improvement spiral pusher life-span and spiral shell machine operating stability crouches. If the wear-resistant sleeve is worn or damaged and needs to be repaired, the wear-resistant sleeve can be directly replaced, and the device is convenient to maintain, short in time, low in cost and good in effect.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of the middle wear-resistant sleeve of the present invention.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Fig. 3 is a sectional view taken along line B-B of fig. 1.

Fig. 4 is an installation schematic diagram of the middle wear-resistant sleeve of the present invention.

Fig. 5 is a sectional view taken along line a-a of fig. 4.

Fig. 6 is a partially enlarged view of fig. 5.

In the figure: 1. the bearing comprises a lining, 2 parts of an alloy sleeve, 3 parts of a mandrel, 4 parts of a connecting hole, 5 parts of a wear-resistant sleeve and 6 parts of an O-shaped ring.

Detailed Description

Example one

As shown in fig. 1 to 5, a replaceable wear sleeve for a screw pusher mandrel, the wear sleeve 5 being mounted in a connection hole 4 in the screw pusher mandrel 3. The spiral pusher mandrel 3 is provided with a plurality of connecting holes 4 which are uniformly arranged, the wear-resistant sleeve 5 comprises a wear-resistant sleeve body, the wear-resistant sleeve body is of a cylindrical structure, a circle of raised clamping edge is arranged on the wear-resistant sleeve body, the cross section of the lower end surface of the wear-resistant sleeve body and the clamping edge in the length direction are both arc-shaped, the excircle size of the wear-resistant sleeve body after installation is slightly smaller than that of the mandrel 3, and the clamping edge is tightly attached to the inner hole of the mandrel 3. Wherein the inner diameter of the wear-resistant sleeve body is 100 multiplied by 72mm, the height is 24mm, and the thickness is 10 mm; the length of card limit is 5mm, and the thickness is 6 mm. Be equipped with first tie coat at the surface of wear-resisting cover body, be equipped with the second tie coat at the upper surface on card limit, first tie coat links to each other with the second tie coat, and first tie coat, second tie coat all adopt the bonding agent to make, and the bonding agent adopts epoxy polyester 2014 (Araldite 2014 promptly) to glue, and the thickness of first tie coat, second tie coat is 0.05 mm.

In addition, the wear-resistant sleeve 5 is formed by hot press fit of a bushing 1 and an alloy sleeve 2, wherein the bushing 1 is made of stainless steel, the alloy sleeve 2 is made of hard alloy, the alloy sleeve 2 is not allowed to have defects such as crack collapse angles, and an O-shaped ring groove is machined in the outer circle of the bushing 1 and used for installing an O-shaped ring 6. The O-shaped ring 6 is arranged in the O-shaped ring groove of the wear-resistant sleeve 5 and is arranged in the connecting hole 4 together with the wear-resistant sleeve 5, so that the material is prevented from influencing the installation stability of the wear-resistant sleeve 5.

During installation, the wear-resistant sleeve 5 is tightly attached to the connecting hole 4 in the mandrel 3 through the excircle and the plane of the wear-resistant sleeve for positioning, an adhesive is coated on the positioning surface of the wear-resistant sleeve 5 before installation, an O-shaped ring is installed again, the wear-resistant sleeve 5 is tightly attached to the connecting hole 4, and the wear-resistant sleeve 5 is tightly attached to the connecting hole 4 all the time and cannot fall off due to the action of centrifugal force in the operation process of the horizontal screw centrifuge. After the material gets into spiral pusher cloth feed bin from the inlet pipe, get into the rotary drum through carbide wear-resisting cover 5 after accelerating and separate, at this in-process, the material can not contact connecting hole 4, because carbide wear-resisting cover 5's wear resistance is excellent, can not produce wearing and tearing hardly. In case special circumstances need to be changed wear-resisting cover 5, only need with old wear-resisting cover 5 pull down install new again can, it is swift convenient to dismantle the installation.

In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.

Claims

1. The utility model provides a spiral pusher mandrel is with removable wear-resisting cover which characterized in that: wear-resisting cover is installed in the connecting hole on the spiral pusher mandrel, wear-resisting cover is including wear-resisting cover body, wear-resisting cover body is the tubular structure wear-resisting cover body is gone up the system and is had the bellied card limit of round, and wear-resisting cover body is arc with the cross sectional shape of card limit in length direction, the excircle size of wear-resisting cover body slightly is less than mandrel excircle size, card limit and the laminating of mandrel hole.

2. The replaceable wear sleeve for a screw pusher mandrel of claim 1, wherein: the inner diameter of the wear-resistant sleeve body is 100 mm multiplied by 72mm, the height is 24mm, and the thickness is 10 mm.

3. The replaceable wear sleeve for a screw pusher mandrel of claim 2, wherein: the length of card limit is 5mm, and thickness is 6 mm.

4. The replaceable wear sleeve for a screw pusher mandrel of claim 2, wherein: the outer surface of the wear-resistant sleeve body is provided with a first bonding layer.

5. The replaceable wear sleeve for a screw pusher mandrel as claimed in claim 4, wherein: and a second bonding layer is arranged on the upper surface of the clamping edge.

6. The replaceable wear sleeve for a screw pusher mandrel as claimed in claim 5, wherein: the first adhesive layer is connected to the second adhesive layer.

7. The replaceable wear sleeve for a screw pusher mandrel as claimed in claim 6, wherein: the first bonding layer and the second bonding layer are made of adhesives.

8. The replaceable wear sleeve for a screw pusher mandrel of claim 7, wherein: the thickness of the first bonding layer and the second bonding layer is 0.05 mm.

9. The replaceable wear sleeve for a screw pusher mandrel of claim 1, wherein: the wear-resistant sleeve consists of a bushing and an alloy sleeve, and the bushing is arranged on the outer circle of the alloy sleeve.

10. The replaceable wear sleeve for a screw pusher mandrel of claim 9, wherein: and an O-shaped ring groove for mounting an O-shaped ring is formed on the excircle of the bushing.