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CN-224227173-U - Gas permeation uniformity optimizing device for carburizing furnace

CN224227173UCN 224227173 UCN224227173 UCN 224227173UCN-224227173-U

Abstract

The utility model relates to the technical field of heat treatment equipment, in particular to a gas permeation uniformity optimizing device for a carburizing furnace, which comprises a furnace body, wherein a plurality of groups of inner protection backing rings are fixedly arranged on the inner wall of the furnace body along the vertical direction, the number of each group of inner protection backing rings is two, the inner protection backing rings are annular, annular air pipes are arranged between the two inner protection backing rings in each group, an upper air outlet and a lower air outlet which are mutually symmetrical are arranged on the inner annular side surface of each annular air pipe, branch pipes penetrating out of the furnace body are fixedly arranged on the side surface of each annular air pipe, main gas pipes are fixedly arranged on the plurality of branch pipes, a plurality of temperature control electric heaters are fixedly arranged in the furnace body, and a plugging cover is arranged at the top of the furnace body and is driven to be opened and closed by a left cylinder and a right cylinder. The utility model has better carburizing effect, avoids dead angles and obviously improves the carburization uniformity.

Inventors

  • QIAN MEI
  • HE SHAOCHUN
  • MA RUICHAO
  • FENG LIPING

Assignees

  • 楚雄活塞销有限公司

Dates

Publication Date
20260512
Application Date
20250613

Claims (8)

  1. 1. The gas permeation uniformity optimizing device for the carburizing furnace comprises a furnace body (1) and is characterized in that a plurality of groups of inner protection backing rings (14) which are arranged along the vertical direction are fixedly arranged on the inner wall of the furnace body (1), the number of the inner protection backing rings (14) is two, the inner protection backing rings (14) are annular, annular air pipes (21) are arranged between the inner protection backing rings (14) in each group, an upper air outlet hole (211) and a lower air outlet hole (211) which are symmetrical to each other are arranged on the inner annular side surface of the annular air pipes (21), branch pipes (20) penetrating out of the furnace body (1) are fixedly arranged on the side surfaces of the annular air pipes (21), a main air pipe (2) is fixedly arranged on a plurality of branch pipes (20), a plurality of temperature-control electric heaters (13) are fixedly arranged in the furnace body (1), and a blocking cover (32) is arranged at the top of the furnace body (1) and is driven to be opened and closed by left and right air cylinders (30).
  2. 2. The gas permeation uniformity optimizing device for a carburizing furnace according to claim 1, wherein a lower projection of said annular gas pipe (21) is located inside a lower projection of said inner protection grommet (14), and said temperature-controlling electric heater (13) is located below the corresponding inner protection grommet (14).
  3. 3. The gas permeation uniformity optimizing device for a carburizing furnace according to claim 1, wherein a group of the gas outlet holes (211) located at the upper side are arranged to be inclined upward by 30-60 degrees, and a group of the gas outlet holes (211) located at the lower side are arranged to be inclined downward by 15-45 degrees.
  4. 4. The gas permeation uniformity optimizing device for a carburizing furnace according to claim 1, wherein a beam plate (3) is arranged above the furnace body (1), the beam plate (3) is fixedly arranged on an external frame body, and the air cylinder (30) is fixedly arranged on the beam plate (3).
  5. 5. The gas permeation uniformity optimizing device for a carburizing furnace according to claim 1, wherein a bolt plate (31) is fixedly installed at the tail end of a telescopic shaft of the cylinder (30), and the plugging cover (32) is detachably installed on the bottom surface of the bolt plate (31).
  6. 6. The gas permeation uniformity optimizing device for a carburizing furnace, according to claim 1, is characterized in that a drain pipe (10) is fixedly arranged at the bottom of the furnace body (1), and a valve (11) is fixedly arranged on the drain pipe (10).
  7. 7. The gas permeation uniformity optimizing device for a carburizing furnace according to claim 1, wherein a plurality of supporting legs (12) are fixedly arranged at the bottom of the furnace body (1), drainage inclined planes (141) are arranged on the side surfaces of the inner protection backing rings (14), the drainage inclined planes (141) on the upper inner protection backing rings (14) in each group are inclined downwards by 30-60 degrees, and the drainage inclined planes (141) on the lower inner protection backing rings (14) in each group are inclined upwards by 30-60 degrees.
  8. 8. The gas permeation uniformity optimizing device for a carburizing furnace, according to claim 1, is characterized in that an upper plugging ring (15) is fixedly installed on a top cylinder of the furnace body (1), a sealing ring (151) is embedded in the upper surface of the upper plugging ring (15), and the plugging cover (32) abuts against the upper surface of the upper plugging ring (15) for sealing operation.

Description

Gas permeation uniformity optimizing device for carburizing furnace Technical Field The utility model relates to the technical field of heat treatment equipment, in particular to a gas permeation uniformity optimizing device for a carburizing furnace. Background Carburization is a common metal surface heat treatment process, and carburization gas is permeated into the surface of a metal workpiece at high temperature, so that the hardness, wear resistance and fatigue strength of the surface of the workpiece are improved, and in the carburization process, the permeation uniformity of the carburization gas in a carburizing furnace directly influences the quality of a carburized layer on the surface of the workpiece. The invention discloses an industrial carburizing furnace, which comprises a motor, a working cavity, a working box door and a controller, wherein the motor is positioned in the middle of the top of the working cavity, the output end of the motor penetrates through the top of the working cavity and extends into the working cavity, a first rotating rod is fixedly connected to the part of the output end of the motor, which is positioned outside the working cavity, a rigid rope is wound on the part of the output end of the motor, which is positioned outside the working cavity, a pulley is arranged on the outer side of the working cavity, a second rotating rod is arranged at the bottom of the working cavity, penetrates through the bottom of the working cavity and extends into the working cavity, the rigid rope on the output end of the motor extends to the second rotating rod through the pulley, the rigid rope is wound on the second rotating rod, and a heating cylinder, a ventilation net cylinder and a leakage unit are further arranged in the working cavity. Although the technical scheme has the advantages of novel design, improvement of the carburization efficiency of steel parts and the like, most carburization furnaces still have some defects in the aspect of gas permeation at present, such as simple gas inlet structure of the traditional carburization furnace, only a simple gas inlet pipeline is adopted for gas inlet, local vortex or gas flow dead angles are easy to form after gas enters the furnace, partial region gas concentration is too high, and other region gas concentration is insufficient, so that the thickness and hardness of a carburized layer on the surface of a workpiece are uneven. Along with the continuous improvement of the quality requirements of industrial production on metal parts, the development of a device capable of effectively optimizing the gas permeation uniformity in a carburizing furnace has important practical significance. Disclosure of utility model The utility model aims to provide a gas permeation uniformity optimizing device for a carburizing furnace, which aims to solve the defects in the prior art. In order to achieve the above purpose, the present utility model provides the following technical solutions: The utility model provides a carburizing furnace is with gas permeation homogeneity optimizing apparatus, includes the furnace body, fixed mounting has the multiunit on the inner wall of furnace body along the interior protection backing ring that vertical direction set up, every group the quantity of interior protection backing ring is two, interior protection backing ring is cyclic annular, two in every group all be provided with annular trachea between the interior protection backing ring, be provided with two sets of ventholes of mutual symmetry about annular tracheal inner ring shape side, fixed mounting has the wearing out on the tracheal side of annular the lateral pipe of furnace body, a plurality of fixed mounting has main gas pipe on the lateral pipe, the inside fixed mounting of furnace body has a plurality of accuse temperature electric heater, the top of furnace body is provided with the shutoff lid, the shutoff lid is through controlling two cylinder drive and is opened and shut. Preferably, the lower projection of the annular air pipe is positioned in the lower projection of the inner protection backing ring, and the temperature-control electric heater is positioned below the corresponding inner protection backing ring. Preferably, a group of air outlet holes positioned above are inclined upwards by 30-60 degrees, and a group of air outlet holes positioned below are inclined downwards by 15-45 degrees; The arrangement can make the air outlet more uniform, and improve the subsequent gas permeation effect. Preferably, a beam plate is arranged above the furnace body, the beam plate is fixedly arranged on an external frame body, and the air cylinder is fixedly arranged on the beam plate. Preferably, a bolt plate is fixedly arranged at the tail end of the telescopic shaft of the air cylinder, and the plugging cover is detachably arranged on the bottom surface of the bolt plate. Preferably, a drain pipe is fixedly arranged at the bottom of the furnace body