CN-121977352-A - Multi-temperature-zone continuous sintering furnace

CN121977352ACN 121977352 ACN121977352 ACN 121977352ACN-121977352-A

Abstract

The invention discloses a multi-temperature-zone continuous sintering furnace, which relates to the technical field of sintering furnaces and comprises a sintering furnace fixing seat and a sintering furnace rotary drum, wherein the sintering furnace fixing seat rotates relative to the sintering furnace rotary drum; according to the invention, the materials in the sintering furnace rotary drum can be stirred and pushed to the high temperature area, so that uneven heating of the materials in the temperature area in each stage is avoided, the second helical blade can scrape the inner wall of the sintering furnace rotary drum, so that the materials are prevented from being retained in the inner wall of the sintering furnace rotary drum, the third helical blade is contacted with the stirring pin, and the stirring pin stirs the third helical blade, so that the materials at the bottom end part of the sintering furnace rotary drum are pushed from the low temperature area to the high temperature area, and the continuity of material conveying in the sintering furnace rotary drum is ensured.

Inventors

HUANG BO
DING ZHENGHE
LIU DONGLAI
WAN YI
ZHANG LEIDA
HE JUN
ZHANG JIANYAO

Assignees

上海尼侃真空技术有限公司

Dates

Publication Date: 20260505
Application Date: 20260126

Claims (10)

1. The utility model provides a continuous fritting furnace of many temperature areas, includes fritting furnace fixing base (1) and fritting furnace rotary drum (2), fritting furnace fixing base (1) rotates relative fritting furnace rotary drum (2), the inside of fritting furnace rotary drum (2) is divided into the temperature area of three stage, be provided with axis of rotation (3) between fritting furnace fixing base (1), the inside rotation of axis of rotation (3) relative fritting furnace rotary drum (2) is connected, the one end of fritting furnace fixing base (1) is provided with feed inlet (6), and the other end of fritting furnace fixing base (1) is provided with discharge gate (7), characterized in that, fritting furnace rotary drum (2)'s inside is provided with mixing and stirring subassembly (4), mixing and stirring subassembly (4) include three first helical blade (41) of group, three group first helical blade (41) both ends all weld reinforcing rod (42), every reinforcing rod (42) all welds with fritting furnace rotary drum (2) mutually, and each first helical blade (41) all rotates with fritting furnace rotary drum (2)'s) inner wall relatively, first helical blade (41) is used for carrying out the equal welding of material of a pair of helical blade (41) both ends (41) with sintering furnace rotary drum (2), the three groups of the first fixing shafts (44) are respectively erected between the corners of the spacing blocks (43), a plurality of second spiral blades (45) are welded between the outer parts of the first fixing shafts (44) and the spacing blocks (43), the second spiral blades (45) are in contact with the inner part of the sintering furnace rotary drum (2), and the second spiral blades (45) and the inner wall of the sintering furnace rotary drum (2) are in friction action and are used for scraping the inner wall heating materials of the sintering furnace rotary drum (2).
2. The multi-temperature-zone continuous sintering furnace according to claim 1, wherein three groups of the spacing blocks (43) respectively correspond to three-stage temperature zones inside the sintering furnace rotary drum (2), three groups of the first spiral blades (41) are respectively positioned in the three-stage temperature zones inside the sintering furnace rotary drum (2), the outer diameter of each first spiral blade (41) is matched with the diameter of the inner wall of the sintering furnace rotary drum (2), the first spiral blades (41) are used for stirring materials inside the three-stage temperature zones, the pitches of the three first spiral blades (41) are sequentially increased, the first spiral blades (41) with large pitches are positioned in a low-temperature zone, the first spiral blades (41) with small pitches are positioned in a high-temperature zone, and the first spiral blades (41) with different pitches are different in turning speeds for heating materials.
3. The multi-temperature-zone continuous sintering furnace according to claim 2, wherein first preformed holes are formed in corners of each spacer block (43) and at intersections of the spacer blocks (43) and each first fixed shaft (44), first rotating sleeves (46) are mounted in the first preformed holes, and each first fixed shaft (44) is rotationally connected with the spacer block (43) through the first rotating sleeve (46), and the first rotating sleeve (46) is used for ensuring normal rotation of the first fixed shaft (44).
4. A multi-temperature zone continuous sintering furnace according to claim 3, characterized in that a reserving groove (47) is formed in the middle of each second spiral blade (45) and at the intersection position of the first fixed shaft (44) and the first spiral blade (41), and the reserving groove (47) is used for preventing the second spiral blade (45) from interfering with the first spiral blade (41) when rotating.
5. The multi-temperature-zone continuous sintering furnace according to claim 4, wherein a first spur gear (48) is arranged at the end part of each first fixed shaft (44) and at the low-temperature-zone partition block (43), a second spur gear (49) is arranged outside the rotating shaft (3) and at the low-temperature-zone partition block (43), and each first spur gear (48) is meshed with the second spur gear (49).
6. A multi-temperature zone continuous sintering furnace according to claim 5, characterized in that the second spur gear (49) is rotatably connected to the end of the rotating shaft (3), three first spur gears (48) are arranged in an annular array on the surface of the spacer block (43) with respect to the axis of the rotating shaft (3), the first spur gears (48) and the second spur gears (49) being adapted to ensure the rotation of the second helical blades (45) on the respective first fixed shafts (44).
7. The multi-temperature-zone continuous sintering furnace according to claim 6, wherein a material pushing assembly (5) is arranged at the edge of each spacer block (43) and positioned at the opposite positions of two adjacent sets of spacer blocks (43), the material pushing assembly (5) comprises side strips (51), the side strips (51) are integrally arranged at two ends of each edge of each spacer block (43), each edge of each side strip (51) is provided with a second fixed shaft (52), the second fixed shafts (52) are erected on two side strips (51) of each edge of each spacer block (43), two ends of each second fixed shaft (52) are respectively connected with the side strips (51) in a rotating mode, a third spiral blade (53) and a stirring blade (57) are welded on the outer portion of each second fixed shaft (52), at least six stirring pins (56) are welded on the inner wall of the sintering furnace (2), the stirring pins (56) are used for stirring blades (57) which synchronously rotate along with the spacer blocks (43), and the third spiral blades (53) and the stirring blades (57) are used for heating materials in different temperature zones in different stages.
8. The multi-temperature-zone continuous sintering furnace according to claim 7, wherein the end parts of the side strips (51) are respectively provided with a second preformed hole, a second rotating sleeve (54) is arranged in each second preformed hole, each second fixed shaft (52) is rotationally connected with the end parts of the side strips (51) through the second rotating sleeve (54), and the second rotating sleeve (54) is used for ensuring the normal rotation of the second fixed shafts (52).
9. A multi-temperature zone continuous sintering furnace according to claim 8, characterized in that both ends of the second fixed shaft (52) are screwed with fixing nuts (55), the fixing nuts (55) are used for limiting the stirring blade (57) between two side strips (51), the axis position of each stirring pin (56) is staggered from the plane position of the spacing block (43), and at least three ends of the stirring pins (56) are contacted with the stirring blade (57) to ensure that the stirring pin (56) rotates the stirring blade (57) around the second fixed shaft (52).
10. The multi-temperature zone continuous sintering furnace according to claim 9, wherein the position of the stirring pin (56) is located in the rotation range of the stirring blade (57) when the stirring blade (57) rotates along with the spacer block (43), and the stirring blade (57) rotates along with the stirring pin (56) when the spacer block (43) rotates relative to the sintering furnace drum (2).

Description

Multi-temperature-zone continuous sintering furnace Technical Field The invention relates to the technical field of sintering furnaces, in particular to a multi-temperature-zone continuous sintering furnace. Background The multi-temperature-zone sintering furnace is composed of five parts of a heating system, a temperature control system, a furnace body structure, a vacuum system and an auxiliary system, wherein the parts are cooperated to realize accurate control of the multi-temperature zones, the multi-temperature-zone sintering furnace sets the heating rate, the heat preservation temperature and the time of each temperature zone through a PLC or a touch screen, each temperature zone is independently controlled in temperature, in the sintering process, a heating element heats different temperature zones according to a set program, a specific temperature gradient is formed in the furnace, a corresponding atmosphere environment or vacuum environment is created through an atmosphere or vacuum system, and continuous sintering of materials is completed under the set temperature and atmosphere conditions; In the prior art, the sintering furnace has certain defects that the material is moved only by rotating the sintering furnace drum in the sintering furnace drum, the material cannot be uniformly stirred when heated in the drum, the material is easy to locally accumulate to form a temperature difference, a large amount of material stays in a low-temperature area to cause insufficient sintering, the product qualification rate is reduced, in addition, the second helical blade cannot realize the scraping function of the inner wall of the drum, the material is extremely easy to adhere and firmly stays in the inner wall, the heat conduction efficiency of the drum is weakened after long-term accumulation, the stability of a temperature field in the furnace is damaged, the difficulty of cleaning the material stays is high, and the production continuity is seriously influenced. Disclosure of Invention The invention aims to provide a multi-temperature-zone continuous sintering furnace so as to solve the problems in the background technology. The aim of the invention can be achieved by the following technical scheme: The utility model provides a many warm areas continuous sintering furnace, includes sintering furnace fixing base and sintering furnace rotary drum, the sintering furnace fixing base rotates with the sintering furnace rotary drum relatively, the inside of sintering furnace rotary drum is the warm area of three stage, be provided with the axis of rotation between the sintering furnace fixing base, the inside rotation of the inside of the relative sintering furnace rotary drum of axis of rotation is connected, the one end of sintering furnace fixing base is provided with the feed inlet, and the other end of sintering furnace fixing base is provided with the discharge gate, the inside of sintering furnace rotary drum is provided with mixing and stirring subassembly, mixing and stirring subassembly includes three first helical blade of group, and three group first helical blade's both ends all weld the reinforcing rod, every reinforcing rod all welds with the sintering furnace rotary drum mutually, and is individual first helical blade all rotates with the inner wall of sintering furnace rotary drum relatively, first helical blade is used for carrying out the material transportation when stirring the material of sintering furnace rotary drum inside, and three groups all weld the piece at the both ends of first helical blade, all erect first fixed axle between the corner of sintering furnace fixing axle, outside and be located each piece and be used for scraping the inside of a plurality of helical blade and second helical blade and the sintering furnace spacer effect of the second helical blade and the inside of sintering furnace rotary drum, the spacer effect is used for scraping the inside the second helical blade and the sintering rotary drum. As a preferable technical scheme of the invention, three groups of the spacing blocks respectively correspond to three-stage temperature areas in the sintering furnace rotary drum, three groups of the first spiral blades are respectively positioned in the three-stage temperature areas in the sintering furnace rotary drum, the outer diameter of each first spiral blade is matched with the diameter of the inner wall of the sintering furnace rotary drum, the first spiral blades are used for stirring materials in the three-stage temperature areas, the pitches of the three first spiral blades are sequentially increased, the first spiral blade with large pitches is positioned in a low-temperature area, the first spiral blade with small pitches is positioned in a high-temperature area, and the speeds of turning the heated materials by the first spiral blades with different pitches are different. As a preferable technical scheme of the invention, first preformed holes are forme