CN112050628A - Kiln for removing wax by using waste heat - Google Patents

Kiln for removing wax by using waste heat Download PDF

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Publication number
CN112050628A
CN112050628A CN202010967694.1A CN202010967694A CN112050628A CN 112050628 A CN112050628 A CN 112050628A CN 202010967694 A CN202010967694 A CN 202010967694A CN 112050628 A CN112050628 A CN 112050628A
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chamber
wax
kiln
temperature
wall
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CN202010967694.1A
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CN112050628B (en
Inventor
易依
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Xupu Yifeng Fine Ceramics Co ltd
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Xupu Yifeng Fine Ceramics Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
    • F27B9/021—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces having two or more parallel tracks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
    • F27B9/028—Multi-chamber type furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor
    • F27B9/243—Endless-strand conveyor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/36—Arrangements of heating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/40—Arrangements of controlling or monitoring devices

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)

Abstract

The invention discloses a kiln for removing wax by utilizing waste heat, which comprises a kiln body and a conveying mechanism. Through setting up the dewaxing room, make the waste heat of sintering chamber directly transmit to in the dewaxing room through first inner wall to promote the inside temperature of dewaxing room, in order to reduce and carry out the heat supply to the dewaxing room through the external energy. Compared with the existing kiln which utilizes gas to transfer the heat energy in the sintering section to the de-waxing section, the invention has higher efficiency of utilizing the solid heat conduction. Moreover, although the prior art can utilize the waste heat to a certain extent, the heat energy of the sintering section cannot be prevented from being diffused to the external space through the outer wall, and the invention adopts a semi-wrapping mode, so that the heat energy diffused through the outer wall can be fully utilized, and the utilization efficiency of the waste heat is higher. Furthermore, with the same principle, the cooling chamber of the invention can also utilize the residual heat of the sintering section, so as to realize the effect of gradually and controllably cooling without using external energy for heating.

Description

Kiln for removing wax by using waste heat
Technical Field
The invention relates to the technical field of de-waxing kilns, in particular to a kiln for removing wax by utilizing waste heat.
Background
The ceramic molding comprises various processes such as injection molding, dry powder molding, hot-press casting molding and the like, wherein the hot-press casting molding process can mold products with complex shapes and has the advantages of simple process, low mold finished products and the like, so that the ceramic molding is widely used. When using the hot-press molding process, the ceramic greenware must be de-waxed prior to sintering.
The existing de-waxing process usually adopts a combustion or electric heating mode to directly heat a kiln, so that a ceramic mud blank in the kiln is heated and heated, and de-waxing is realized. On the one hand, combustion for dewaxing or heating by electric heat consumes a large amount of energy, and on the other hand, waste heat generated during sintering is dissipated to the outside space and is not effectively utilized.
Disclosure of Invention
The invention mainly aims to provide a kiln for removing wax by utilizing waste heat, and aims to solve the problem that the waste heat generated by sintering during ceramic processing is not effectively utilized.
In order to achieve the purpose, the kiln for removing wax by utilizing waste heat provided by the invention comprises a kiln body and a conveying mechanism; the furnace body comprises a first furnace body and a second furnace body which are connected with each other in the horizontal direction; the first furnace body comprises two outer side walls which are arranged in parallel at intervals along the connecting line direction of the first furnace body and the second furnace body, the two outer side walls are vertically arranged, the two outer side walls extend towards the inside of the second furnace body to divide the second furnace body into two dewaxing chambers and one sintering chamber, and a cooling chamber is formed in the first furnace body; each outer side wall extends towards the interior of the second furnace body to form a first inner wall; the two wax removing chambers are connected with the sintering chamber, the two wax removing chambers are respectively and symmetrically distributed on two sides of the sintering chamber, each wax removing chamber and the sintering chamber share one first inner wall, and the length of the wax removing chamber along the extension direction of the first inner wall is equal to the length of the sintering chamber along the extension direction of the first inner wall; a heating device is arranged in the sintering chamber; the cooling chamber is connected with the sintering chamber, the cooling chamber is positioned on the other side of the sintering chamber, the cooling chamber and the sintering chamber share a second inner wall, and the width of the cooling chamber is equal to that of the sintering chamber; the conveying mechanisms are divided into two groups, and each group of conveying mechanism comprises two vertically-mounted rollers, a conveying belt and a plurality of object stages; each side wall and each first inner wall are provided with a rolling shaft; the conveyor belt is sleeved on the side wall on the same side and the two rolling shafts on the first inner wall, and the conveyor belt sequentially passes through the external space, the wax removal chamber, the sintering chamber and the cooling chamber; the objective table is arranged on one surface of the conveyor belt far away from the rolling shaft; the inner wall and the side wall of the furnace body are provided with a passage opening at the position passing through the conveyor belt.
Preferably, the side wall of the roller is formed with a gear; the side wall of the rolling shaft is provided with a limiting ring which protrudes outwards.
Preferably, the conveyor belt is a steel belt and is formed by sequentially hinging steel plates;
one side of the steel plate is provided with a rack which can be meshed with the gear; the one side that the steel sheet was formed with the rack is formed with the bar spacing groove, and the spacing groove can cooperate with the spacing ring.
Preferably, a temperature rising device, a ventilation device and a temperature sensor are arranged in the wax removing chamber; the temperature raising device is used for raising the temperature in the de-waxing chamber; the ventilation device is used for reducing the temperature in the de-waxing chamber; the temperature sensor is used for detecting the temperature in the de-waxing chamber.
Preferably, the kiln utilizing waste heat to remove wax further comprises a controller, and the controller is respectively in signal connection with the temperature rising device, the ventilation device and the temperature sensor; the controller is used for acquiring temperature information detected by the temperature sensor and respectively controlling the opening and closing of the heating device and the ventilation device according to the temperature information; when the temperature information does not reach the preset low temperature value, the controller sends a starting signal to the heating device, and when the temperature information exceeds the preset high temperature value, the controller sends a starting signal to the ventilation device; and when the temperature information is between the preset low temperature value and the preset high temperature value, the controller respectively sends closing signals to the heating device and the ventilation device.
Preferably, a rolling door is installed at the top end of each passage opening; the rolling door is used for separating two adjacent spaces.
Preferably, a vertically arranged mounting plate is formed in the sintering chamber, and the first inner walls on the two sides are symmetrical along the central plane of the mounting plate; heating devices are arranged on two sides of the mounting plate.
Preferably, the objective table comprises a top plate and a bottom plate which are vertically distributed, the top plate is connected with the bottom plate through a rod, and the objective table is fixedly connected with one surface of the steel plate, which deviates from the rack.
Preferably, the temperature range of the dewaxing chamber is: 0-600 ℃; the temperature range of the sintering chamber is as follows: 600-1200 ℃.
Preferably, the heat source of the heating device is from a silicon molybdenum rod or a silicon carbon rod.
According to the technical scheme, the wax removal chamber sharing the first inner wall with the sintering chamber is arranged, so that waste heat of the sintering chamber can be directly transmitted into the wax removal chamber through the first inner wall, the internal temperature of the wax removal chamber is increased, and heat supply to the wax removal chamber through an external energy source is reduced. Compared with the existing kiln which utilizes gas to transfer heat energy in the sintering section to the de-waxing section, the kiln which utilizes waste heat to remove wax has higher efficiency of utilizing solid heat conduction. Moreover, although the prior art can utilize the waste heat to a certain extent, the heat energy of the sintering section cannot be prevented from being diffused to the external space through the outer wall, and the kiln utilizing the waste heat to remove the wax adopts a semi-wrapping mode, so that the heat energy diffused through the outer wall can be fully utilized, and the utilization efficiency of the waste heat is higher. Moreover, by the same principle, the cooling chamber of the kiln utilizing the waste heat to remove the wax can also utilize the waste heat of the sintering section, so that the effect of gradually and controllably cooling without using external energy for increasing the temperature is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a kiln for removing wax by using waste heat according to the present invention;
FIG. 2 is a schematic cross-sectional view of a kiln for removing wax by using waste heat according to the present invention;
FIG. 3 is a schematic sectional view of the furnace body;
FIG. 4 is a schematic view of a roller;
FIG. 5 is a schematic structural view of a steel plate;
FIG. 6 is a schematic view of the stage;
fig. 7 is a schematic diagram of the movement process of the conveying mechanism.
The reference numbers illustrate:
Figure BDA0002682936600000031
Figure BDA0002682936600000041
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a kiln for removing wax by utilizing waste heat.
Referring to fig. 1 to 7, the kiln using waste heat to remove wax includes a kiln body 100 and a conveying mechanism 200; the furnace body 100 includes a first furnace body and a second furnace body connected to each other in the horizontal direction; the first furnace body comprises two outer side walls which are arranged along the connecting line direction of the first furnace body and the second furnace body at intervals in parallel, the two outer side walls are vertically arranged, the two outer side walls extend towards the inside of the second furnace body to divide the second furnace body into two dewaxing chambers 110 and one sintering chamber 120, and a cooling chamber 130 is formed in the first furnace body.
Each outer side wall extends towards the interior of the second furnace body to form a first inner wall 141; the two wax discharging chambers 110 are connected with the sintering chamber 120, the two wax discharging chambers 110 are symmetrically distributed on two sides of the sintering chamber 120, each wax discharging chamber 110 shares a first inner wall 141 with the sintering chamber 120, and waste heat in the sintering chamber 120 can be transferred to the wax discharging chamber 110 through the first inner wall 141, so that the internal temperature of the wax discharging chamber 110 is increased, and external energy supply is reduced. The length of the dewaxing chamber 110 along the extending direction of the first inner wall 141 is equal to the length of the sintering chamber 120 along the extending direction of the first inner wall 141.
The sintering chamber 120 is provided therein with a heating device 121, and the heating device 121 includes any one of an electric heating device, a combustion heat generating device, and a chemical temperature raising device.
The cooling chamber 130 is connected to the sintering chamber 120, the cooling chamber 130 is located at the other side of the sintering chamber 120, the cooling chamber 130 and the sintering chamber 120 share a second inner wall 142, and the width of the cooling chamber 130 is equal to the width of the sintering chamber 120.
There are two sets of transport mechanisms 200, each set of transport mechanism 200 comprising two vertically mounted rollers 210, a conveyor belt and a plurality of stages 230; a roller 210 is mounted on each side wall and each first inner wall 141. The stage 230 is used to hold a ceramic slurry to be processed, which is sequentially introduced into the dewaxing chamber 110, the sintering chamber 120, and the cooling chamber 130 from an external space following the conveyor belt by the rotation of the roller 210, and finally returned to the external space from the cooling chamber 130. The operator can load the ceramic blank or unload the ceramic finished product in the external space. The roller 210 is driven to rotate by a motor, the motor is in signal connection with a controller, and the controller can control the on-off of the motor and adjust the working power of the motor.
The conveyor belt is sleeved on the two rollers 210 on the side wall and the first inner wall 141 on the same side, and the conveyor belt sequentially passes through the external space, the dewaxing chamber 110, the sintering chamber 120 and the cooling chamber 130.
The object stage 230 is mounted on a side of the conveyor belt remote from the roller 210, the object stage 230 is fixedly connected to the conveyor belt, and an angle formed by the object stage 230 and the conveyor belt is not changed by the movement of the conveyor belt.
The inner wall and the side wall of the furnace body 100 are formed with a passage opening 150 at a position where the conveyor belt passes through, and the passage opening 150 is used for allowing the conveyor belt and the stage 230 to pass through smoothly.
In the technical scheme of the invention, the wax removal chamber 110 sharing the first inner wall 141 with the sintering chamber 120 is arranged, so that the waste heat of the sintering chamber 120 can be directly transmitted into the wax removal chamber 110 through the first inner wall 141, the internal temperature of the wax removal chamber 110 is raised, and the heat supply to the wax removal chamber 110 through an external energy source is reduced. Compared with the existing kiln which utilizes gas to transfer heat energy in the sintering section to the de-waxing section, the kiln which utilizes waste heat to remove wax has higher efficiency of utilizing solid heat conduction. Moreover, although the prior art can utilize the waste heat to a certain extent, the heat energy of the sintering section cannot be prevented from being diffused to the external space through the outer wall, and the kiln utilizing the waste heat to remove the wax adopts a semi-wrapping mode, so that the heat energy diffused through the outer wall can be fully utilized, and the utilization efficiency of the waste heat is higher. Furthermore, in the same principle, the cooling chamber 130 of the kiln using waste heat for dewaxing according to the present invention can also use the waste heat of the sintering section 120, so as to achieve the effect of gradually and controllably cooling without using external energy for increasing the temperature.
Specifically, a gear 211 is formed on a side wall of the roller 210; the roller 210 has a retainer ring 212 formed on a side wall thereof to protrude outward. The conveyor belt is a steel belt and is formed by sequentially hinging steel plates 220; one surface of the steel plate 220 is formed with a rack 221, and the rack 221 can be engaged with the gear 211; one side of the steel plate 220, on which the rack 221 is formed, is formed with a strip-shaped limiting groove 222, and the limiting groove 222 can be matched with the limiting ring 212.
By arranging the gear 211 and the rack 221 capable of being meshed with the gear, when the roller 210 drives the conveyor belt to move, the slipping phenomenon is avoided, and the stability of the conveying process is improved. Because the roller 210 is vertically arranged and the conveyor belt is vertically stressed with the roller 210, in order to prevent the conveyor belt from slipping off the roller 210, the horizontally arranged limiting ring 212 and the limiting groove 222 which are mutually matched are arranged, and the limiting ring 212 can be embedded into the limiting groove 222, so that the conveyor belt is prevented from slipping in the vertical direction relative to the roller 210.
Specifically, a temperature raising device, a ventilation device and a temperature sensor are installed in the dewaxing chamber 110; the temperature raising device is used for raising the temperature in the wax discharging chamber 110; the ventilation device is used for reducing the temperature in the wax discharging chamber 110; the temperature sensor is used for detecting the temperature in the dewaxing chamber 110.
Because the temperature control of the dewaxing process is very strict, once the temperature is out of order, the dewaxing may be incomplete or the ceramic mud blank may crack due to expansion, and the condition affects the quality of the finished ceramic product. In order to more precisely control the internal temperature of the dewaxing chamber 110 to meet the dewaxing requirement, a temperature sensor is provided to monitor the temperature in the dewaxing chamber 110 in real time, and an operator can adjust a temperature raising device or a ventilation device according to the displayed temperature information to change the temperature.
Preferably, the kiln utilizing waste heat to remove wax further comprises a controller, and the controller is respectively in signal connection with the temperature rising device, the ventilation device and the temperature sensor; the controller is used for acquiring temperature information detected by the temperature sensor and respectively controlling the opening and closing of the heating device and the ventilation device according to the temperature information; when the temperature information does not reach the preset low temperature value, the controller sends a starting signal to the heating device, and when the temperature information exceeds the preset high temperature value, the controller sends a starting signal to the ventilation device; and when the temperature information is between the preset low temperature value and the preset high temperature value, the controller respectively sends closing signals to the heating device and the ventilation device.
Through installing the controller to require the input to correspond the preset low temperature value and predetermine the high temperature value at moment according to the wax removal, the controller utilizes real-time temperature information to compare with presetting low temperature value and predetermineeing the high temperature value respectively, according to contrast result control rising temperature device and ventilation unit, thereby realize automaticly.
Preferably, a roller door is installed at the top end of each passage opening 150; the rolling door is used for separating two adjacent spaces.
The higher temperature chamber cools too quickly due to the rapid transfer of thermal energy to the adjacent chamber through the port 150, resulting in energy loss. The passage opening 150 is closed by installing a rolling door to improve the heat preservation effect.
Preferably, a vertically arranged mounting plate 122 is formed in the sintering chamber 120, and the two first inner walls 141 are symmetrical along the central plane of the mounting plate 122; the heating devices 121 are mounted on both sides of the mounting plate 122. Set up mounting panel 122 and install heating device 121 detachably on mounting panel 122, be convenient for carry out later stage maintenance or change to heating device 121, simultaneously, heating device 121 can be just to ceramic clay base, improves the intensification effect.
Preferably, the object stage 230 includes a top plate 231 and a bottom plate 232 which are vertically distributed, the top plate 231 and the bottom plate 232 are connected by a rod 233, and the object stage 230 is fixedly connected with a surface of the steel plate 220 facing away from the rack 221. The stage 230 is used for holding and moving the ceramic body. A partition plate is detachably installed between the top plate 231 and the bottom plate 232, and the height of the partition plate can be adjusted. The user can arrange the quantity and the height of baffle according to the concrete size of ceramic clay base, is convenient for process more ceramic clay bases simultaneously.
Specifically, the temperature range of the de-waxing chamber 110 is: 0-600 ℃; the temperature range of the sintering chamber 120 is: 600-1200 ℃.
Preferably, the heat source of the heating device 121 is from a silicon molybdenum rod or a silicon carbon rod. The silicon-molybdenum rod and the silicon-carbon rod have high heat release efficiency and can generate high temperature required by sintering.
In still another embodiment of the present application, a temperature raising device, a ventilation device, and a temperature sensor are installed in the cooling chamber 130; the temperature raising device is used for raising the temperature in the cooling chamber 130; the ventilation device is used for reducing the temperature in the cooling chamber 130; the temperature sensor is used to detect the temperature in the cooling chamber 130.
Since the cooling process is very strict in controlling the temperature, once the temperature is out of order, the quality of the finished ceramic product may be affected. In order to more precisely control the internal temperature of the cooling chamber 130 to meet the cooling requirement, a temperature sensor is provided to monitor the temperature inside the cooling chamber 130 in real time, and an operator may adjust a temperature raising device or a ventilation device to change the temperature according to the displayed temperature information.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. The kiln for removing wax by using waste heat is characterized by comprising a kiln body (100) and a conveying mechanism (200);
the furnace body (100) comprises a first furnace body and a second furnace body which are connected with each other in the horizontal direction; the first furnace body comprises two outer side walls which are arranged in parallel at intervals along the connecting line direction of the first furnace body and the second furnace body, the two outer side walls are vertically arranged, the two outer side walls extend towards the interior of the second furnace body to divide the second furnace body into two wax removing chambers (110) and a sintering chamber (120), and a cooling chamber (130) is formed in the first furnace body;
each outer side wall extends towards the interior of the second furnace body to form a first inner wall (141); the two wax removal chambers (110) are connected with the sintering chamber (120), the two wax removal chambers (110) are respectively and symmetrically distributed on two sides of the sintering chamber (120), each wax removal chamber (110) and the sintering chamber (120) share a first inner wall (141), and the length of the wax removal chamber (110) in the extension direction of the first inner wall (141) is equal to the length of the sintering chamber (120) in the extension direction of the first inner wall (141);
a heating device (121) is arranged in the sintering chamber (120);
the cooling chamber (130) is connected with the sintering chamber (120), the cooling chamber (130) is positioned at the other side of the sintering chamber (120), the cooling chamber (130) and the sintering chamber (120) share a second inner wall (142), and the width of the cooling chamber (130) is equal to that of the sintering chamber (120);
two groups of conveying mechanisms (200) are provided, wherein each group of conveying mechanisms (200) comprises two vertically-mounted rollers (210), a conveying belt and a plurality of object stages (230); each side wall and each first inner wall (141) are provided with one rolling shaft (210);
the conveyor belt is sleeved on the two rolling shafts (210) on the side wall and the first inner wall (141) at the same side, and the conveyor belt sequentially passes through an external space, the de-waxing chamber (110), the sintering chamber (120) and the cooling chamber (130);
the object stage (230) is arranged on the side of the conveyor belt far away from the roller (210);
the inner wall and the side wall of the furnace body (100) are provided with a passage opening (150) at the position passing through the conveyor belt.
2. The kiln for removing wax by using the residual heat according to claim 1, wherein the side wall of the roller (210) is formed with a gear (211); and a limiting ring (212) protruding outwards is formed on the side wall of the roller (210).
3. The kiln for removing wax by using the residual heat as claimed in claim 2, wherein the conveyor belt is a steel belt, and the conveyor belt is formed by sequentially hinging steel plates (220);
a rack (221) is formed on one surface of the steel plate (220), and the rack (221) can be meshed with the gear (211); one side of the steel plate (220) where the rack (221) is formed is provided with a strip-shaped limiting groove (222), and the limiting groove (222) can be matched with the limiting ring (212).
4. The kiln for removing wax by using the waste heat according to claim 1, wherein a temperature rising device, a ventilation device and a temperature sensor are arranged in the wax removing chamber (110); the temperature raising device is used for raising the temperature in the de-waxing chamber (110); the ventilation device is used for reducing the temperature in the de-waxing chamber (110); the temperature sensor is used for detecting the temperature in the wax discharging chamber (110).
5. The kiln for removing wax by using waste heat according to claim 4, further comprising a controller, wherein the controller is in signal connection with the temperature rising device, the ventilation device and the temperature sensor respectively; the controller is used for acquiring temperature information detected by the temperature sensor and respectively controlling the heating device and the ventilation device to be opened and closed according to the temperature information; when the temperature information does not reach a preset low temperature value, the controller sends a starting signal to the heating device, and when the temperature information exceeds the preset high temperature value, the controller sends a starting signal to the ventilation device; and when the temperature information is between the preset low temperature value and the preset high temperature value, the controller respectively sends closing signals to the heating device and the ventilation device.
6. The kiln for removing wax by using residual heat according to any one of claims 1 to 5, wherein a roller shutter door is installed at the top end of each passage opening (150); the roller shutter door is used for separating two adjacent spaces.
7. The kiln for removing wax by using residual heat according to any one of claims 1 to 5, wherein a vertically arranged mounting plate (122) is formed in the sintering chamber (120), and the two first inner walls (141) are symmetrical along the central plane of the mounting plate (122); and heating devices (121) are arranged on two surfaces of the mounting plate (122).
8. The kiln for removing wax by using the waste heat as claimed in any one of claims 1 to 5, wherein the object stage (230) comprises a top plate (231) and a bottom plate (232) which are vertically distributed, the top plate (231) and the bottom plate (232) are connected through a rod (233), and the object stage (230) is fixedly connected with one surface of the steel plate (220) which is far away from the rack (221).
9. The kiln for removing wax by using residual heat according to any one of claims 1 to 5, wherein the temperature range of the wax removing chamber (110) is as follows: 0-600 ℃; the temperature range of the sintering chamber (120) is as follows: 600-1200 ℃.
10. The kiln for removing wax by using residual heat according to any one of claims 1 to 5, characterized in that the heat source of the heating device (121) is from a silicon molybdenum rod or a silicon carbon rod.
CN202010967694.1A 2020-09-15 2020-09-15 Kiln for removing wax by using waste heat Active CN112050628B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09222282A (en) * 1996-02-15 1997-08-26 Ulvac Japan Ltd Continuous heat treatment furnace
US20030143098A1 (en) * 2000-06-28 2003-07-31 Hartmut Weber Method and device for sintering aluminum based sintered parts
JP2011208842A (en) * 2010-03-29 2011-10-20 Finesinter Co Ltd Continuous sintering furnace
CN107062895A (en) * 2017-05-09 2017-08-18 新化县群华陶瓷科技有限公司 Energy-conserving and environment-protective de-waxing kiln and its de-waxing technique
CN206875951U (en) * 2017-05-09 2018-01-12 新化县群华陶瓷科技有限公司 Energy-conserving and environment-protective de-waxing kiln
CN108007188A (en) * 2017-12-21 2018-05-08 新化县新园电子陶瓷有限公司 Kiln for ceramic post sintering de-waxing
WO2020108409A1 (en) * 2018-11-26 2020-06-04 太原开元智能装备有限公司 Externally heated vacuum continuous sintering furnace

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09222282A (en) * 1996-02-15 1997-08-26 Ulvac Japan Ltd Continuous heat treatment furnace
US20030143098A1 (en) * 2000-06-28 2003-07-31 Hartmut Weber Method and device for sintering aluminum based sintered parts
JP2011208842A (en) * 2010-03-29 2011-10-20 Finesinter Co Ltd Continuous sintering furnace
CN107062895A (en) * 2017-05-09 2017-08-18 新化县群华陶瓷科技有限公司 Energy-conserving and environment-protective de-waxing kiln and its de-waxing technique
CN206875951U (en) * 2017-05-09 2018-01-12 新化县群华陶瓷科技有限公司 Energy-conserving and environment-protective de-waxing kiln
CN108007188A (en) * 2017-12-21 2018-05-08 新化县新园电子陶瓷有限公司 Kiln for ceramic post sintering de-waxing
WO2020108409A1 (en) * 2018-11-26 2020-06-04 太原开元智能装备有限公司 Externally heated vacuum continuous sintering furnace

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Denomination of invention: A kiln that utilizes waste heat to remove wax

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