CN-224227151-U - Drag chain type multi-layer low-temperature tempering furnace

CN224227151UCN 224227151 UCN224227151 UCN 224227151UCN-224227151-U

Abstract

A drag chain type multi-layer low-temperature tempering furnace is used for carrying out low-temperature tempering operation on bearing and steel ball workpieces and comprises a furnace body, heating elements, an air flow circulation mechanism, multi-layer inner and outer chain belt brackets, a plurality of chain belt driving mechanisms and a plurality of annular conveying chain belts, wherein the furnace body is provided with a furnace chamber and a feeding and discharging hole, the heating elements and the air flow circulation mechanism are arranged in the furnace chamber, the multi-layer inner and outer chain belt brackets are vertically stacked and respectively arranged in the furnace chamber and below the furnace body, two ends of the inner chain belt brackets extend from the feeding and discharging holes, the plurality of chain belt driving mechanisms are respectively arranged at two ends of the inner chain belt brackets of each layer of the multi-layer inner chain belt brackets corresponding to the multi-layer inner chain belt brackets, and the plurality of annular conveying chain belts are respectively sleeved on the inner and outer chain belt brackets and the chain belt driving mechanisms which are close to the bottom side wall of the furnace body in sequence. Therefore, the productivity of the tempering operation of the workpieces can be improved by multiple times, and the simultaneous tempering operation of different tempering requirements of batch workpieces can be met.

Inventors

GUO YONGSHENG

Assignees

爱协林热处理系统(北京)有限公司

Dates

Publication Date: 20260512
Application Date: 20250527

Claims (10)

1. A drag chain type multi-layer low temperature tempering furnace for low temperature tempering operation of bearing and steel ball workpieces, comprising: furnace body, several heating element and air current circulation mechanism, the inside furnace that has of furnace, the furnace body in two on the axial of furnace two relative lateral walls have seted up respectively with communicating feed inlet and the discharge gate of furnace, several heating element and air current circulation mechanism all set up in the furnace, its characterized in that still includes: the multi-layer chamber inner chain belt bracket, the multi-layer chamber outer chain belt bracket, a plurality of chain belt driving mechanisms and a plurality of annular conveying chain belts, wherein the multi-layer chamber inner chain belt bracket is in an up-down lamination shape and is arranged in the hearth at intervals, two end parts of each layer of chamber inner chain belt bracket are respectively extended to the outer side of the furnace body from the feeding hole and the discharging hole, the multi-layer chamber outer chain belt bracket is also in an up-down lamination shape and is arranged below the furnace body at intervals, the plurality of chain belt driving mechanisms correspond to the multi-layer chamber inner chain belt bracket and are respectively arranged at two ends of each layer of chamber inner chain belt bracket, and the plurality of annular conveying chain belts are respectively sleeved on the chamber inner chain belt bracket, the chamber outer chain belt bracket and the chain belt driving mechanisms which are close to the bottom side wall of the furnace body in sequence.
2. The drag chain type multi-layer low temperature tempering furnace according to claim 1, wherein the lengths of the inner-chamber chain belt brackets of each layer are sequentially increased from bottom to top, the lengths of the outer-chamber chain belt brackets of each layer are sequentially increased from top to bottom, and the circumferences of the annular conveying chain belts are sequentially increased from inside to outside.
3. The drag chain type multi-layer low temperature tempering furnace according to claim 1, wherein the multi-layer external chamber chain belt bracket is composed of a plurality of support columns and multi-layer external chamber brackets, each layer of external chamber brackets is composed of a plurality of support beams and two groove rails, the support columns are vertically and uniformly and symmetrically arranged on two lower sides of the bottom side wall of the furnace body along the axial direction of the furnace chamber, the support beams of the multi-layer external chamber brackets are horizontally and fixedly arranged between the two support columns from bottom to top at intervals, the two groove rails of each layer of external chamber brackets are parallel to each other along the axial direction of the furnace chamber, the grooves are opposite to each other at intervals and fixedly arranged on the upper parts of the support beams of each layer of external chamber brackets, and the lower belt sections of the annular conveying chains outside the furnace chamber are slidably and correspondingly embedded in the two groove rails of each layer of external chamber brackets.
4. The drag chain type multi-layer low temperature tempering furnace according to claim 1, wherein the multi-layer chamber inner chain belt bracket is composed of a plurality of struts and multi-layer chamber inner brackets, each layer of the chamber inner brackets is composed of a plurality of pi-shaped supporting beams and two chain rails, each pi-shaped supporting beam is composed of a horizontal cross beam and two vertical beams vertically connected to two ends of the cross beam, the plurality of pi-shaped supporting beams of the chamber inner brackets of the lowest layer are arranged on two sides of the upper part of the inner bottom side wall of the hearth by arranging the lower end parts of the two vertical beams at intervals in a fixed mode, the plurality of pi-shaped supporting beams of the rest layers are arranged on the upper end parts of the two vertical beams at the lower part in a laminated mode respectively by arranging the lower end parts of the two vertical beams at intervals in a sequential mode, the plurality of struts are vertically and uniformly arranged between the plurality of cross beams of the chamber inner brackets of the lowest layer and the bottom side wall of the hearth, the plurality of the pi-shaped supporting beams of the rest layers are arranged on the upper end parts of the two chain wheels of the inner side walls of the chamber inner brackets at intervals corresponding to each other, and the sliding wheel can be arranged on the upper end parts of the two side rails of the inner side brackets of the inner side walls of the chamber inner brackets of the hearth in a sliding belt.
5. The drag chain type multi-layer low-temperature tempering furnace according to claim 1, further comprising two bearing frames, wherein the two bearing frames are respectively arranged at the outer sides of the feed inlet and the discharge outlet, an empty arrangement space is formed in the bearing frames, two ends of the multi-layer inner-bore chain belt bracket, which are positioned at the outer sides of the feed inlet and the discharge outlet, are respectively fixedly combined on the two bearing frames, part belt sections of the plurality of annular conveying chain belts, which are positioned at the outer sides of the feed inlet and the discharge outlet, are movably accommodated in the arrangement space, and the plurality of chain belt driving mechanisms are arranged on the two bearing frames and are in driving connection with the plurality of annular conveying chain belts.
6. The drag chain type multi-layer low temperature tempering furnace according to claim 5, wherein the chain belt driving mechanism is composed of a gear motor, a driving chain belt guide roller, a driven chain belt guide roller and an annular chain, the gear motor is mounted on one side of the bearing frame, the driving chain belt guide roller and the driven chain belt guide roller are both horizontally and vertically arranged at two ends of the inner chain belt bracket adjacent to and far away from the gear motor respectively in the extending direction of the inner chain belt bracket, the two ends of the driving chain belt guide roller and the driven chain belt guide roller are rotatably fixed on the bearing frame through bearings, the circumferential roller surfaces of the driving chain belt guide roller and the driven chain belt guide roller are provided with a plurality of teeth, the belt sections of the two ends of the inner chain belt bracket are respectively wrapped on the circumferential roller surfaces of the driving chain belt guide roller and the driven chain belt guide roller and meshed with the teeth thereon, one end fixing sleeves of the driving chain belt guide roller adjacent to the gear motor are provided with chain wheels, and the driving end of the gear motor is fixedly provided with driving chain wheels, and the chain wheels are connected with the annular chain through sleeves.
7. The drag chain type multi-layer low temperature tempering furnace according to claim 5, further comprising a feed end protection cover and a discharge end protection cover, wherein the feed end protection cover and the discharge end protection cover are formed by splicing and assembling profile steel, steel plates and connecting pieces, and the feed end protection cover and the discharge end protection cover are respectively covered on the outer sides of the bearing frames at the feed port and the discharge port and are connected with the furnace body.
8. The drag chain type multi-layer low temperature tempering furnace according to claim 1, further comprising a feeding mechanism, wherein the feeding mechanism is arranged at the outer side of the feeding hole and is composed of a hopper lifting device, a ball distributing device and a plurality of distributing channels, the hopper lifting device is composed of a hopper and a lifting part, the bearing and steel ball workpieces to be tempered contained in the hopper are lifted to a height higher than the uppermost-layer in-chamber chain belt bracket through the lifting part, the ball distributing device is arranged below the hopper after lifting, the feeding ends of the distributing channels are connected with the ball distributing device, the discharging ends of the distributing channels are respectively arranged at the feeding ends of the multi-layer in-chamber chain belt bracket, and the heights of the feeding ends of the distributing channels are higher than the heights of the discharging ends of the distributing channels, and the ball distributing device receives the bearing and steel ball workpieces conveyed by the hopper and selectively conveys the bearing and steel ball workpieces into the distributing channels.
9. The drag chain type multi-layer low temperature tempering furnace according to claim 8, further comprising a discharging mechanism, wherein the discharging mechanism is arranged on the outer side of the discharging hole and consists of a plurality of thrusters and a plurality of discharging channels, the thrusters are respectively arranged on one side of the discharging ends of the multi-layer inner chain belt bracket, the feeding ends of the discharging channels are respectively arranged on the other side of the discharging ends of the multi-layer inner chain belt bracket, the discharging ends of the discharging channels are connected with a collecting device or a next process device, and the feeding ends of the discharging channels are higher than the discharging ends of the discharging channels.
10. The drag chain type multi-layer low temperature tempering furnace according to claim 9, further comprising a central control unit, wherein the central control unit is electrically connected with the heating element, the air circulation mechanism, the chain belt driving mechanism, the lifting part, the ball separating device and the pushing device respectively.

Description

Drag chain type multi-layer low-temperature tempering furnace Technical Field The utility model relates to the technical field of low-temperature tempering furnaces, in particular to a drag chain type multi-layer low-temperature tempering furnace. Background At present, the drag chain type low-temperature tempering furnace is basically of a single-layer chain (net) belt structure, and because of the limitation of the space of an operation field, the number of tempering stations of the single-layer drag chain type low-temperature tempering furnace is limited, and the requirement of tempering operation of a large number of workpieces cannot be met, so that the production efficiency is severely restricted. In addition, the existing low-temperature tempering furnace has a single operation mode, and can not meet the treatment of different tempering requirements of batch workpieces in a short time. Therefore, how to provide a drag chain type low temperature tempering furnace with small occupied area and high productivity, which can meet various tempering requirements of workpieces, has become one of the technical problems to be solved in the art. Disclosure of utility model The technical scheme aims to solve the technical problem of how to provide a drag chain type low-temperature tempering furnace which is specially used for carrying out low-temperature tempering operation on bearing and steel ball workpieces, has small occupied area and high productivity and can meet various tempering requirements of batch workpieces. In order to solve the technical problem, the technical scheme provides a drag chain type multi-layer low-temperature tempering furnace for carrying out low-temperature tempering operation on a bearing and steel ball workpieces, the drag chain type multi-layer low-temperature tempering furnace comprises a furnace body, a plurality of heating elements, an airflow circulation mechanism, a multi-layer chamber inner chain belt bracket, a multi-layer chamber outer chain belt bracket, a plurality of chain belt driving mechanisms and a plurality of annular conveying chain belts, wherein the furnace body is internally provided with a furnace chamber, two opposite side walls of the furnace body in the axial direction of the furnace chamber are respectively provided with a feed inlet and a discharge outlet which are communicated with the furnace chamber, the heating elements and the airflow circulation mechanism are all arranged in the furnace chamber, the multi-layer chamber inner chain belt bracket is in an upper-lower lamination shape and is arranged in the furnace chamber at intervals, two end parts of each layer chamber inner chain belt bracket are respectively extended to the outer side of the furnace body from the feed inlet and the discharge outlet, the multi-layer chamber outer chain belt bracket is also in an upper-lower lamination shape and is arranged below the furnace body at intervals, the multi-layer chamber inner chain belt driving mechanisms are respectively arranged at two ends of each layer chamber inner chain belt bracket, and the multi-layer inner chain belt driving mechanisms are respectively arranged at the near ends of each layer inner chain belt bracket, and the chain belt driving mechanism is respectively arranged at the far from the bottom of the chamber inner chain belt bracket and the inner chain belt bracket. Therefore, the production capacity of the tempering operation of the workpiece can be increased by multiple times under the condition of not occupying extra space and consuming more energy, and each annular conveying chain belt can independently drive and operate so as to meet the simultaneous tempering operation of different tempering demands of batch workpieces. As another implementation of the technical scheme, the lengths of the inner chain belt brackets of the layers of bores are sequentially increased from bottom to top, the lengths of the outer chain belt brackets of the layers of bores are sequentially increased from top to bottom, and the circumferences of the annular conveying chain belts are sequentially increased from inside to outside. Accordingly, the transmission parts of the annular conveying chain belts can be ensured to be independent to each other, so that running interference between the transmission parts is prevented. As another implementation of the technical scheme, the multi-layer chamber outer chain belt bracket is composed of a plurality of supporting columns and multi-layer chamber outer brackets, each layer of chamber outer brackets is composed of a plurality of supporting beams and two groove rails, the supporting columns are vertically and uniformly and symmetrically arranged on two sides of the lower portion of the bottom side wall of the furnace body along the axial direction of the furnace chamber, the supporting beams of the multi-layer chamber outer bracket are horizontally and fixedly arranged between the two corresponding supporting col