CN107906950B - Slow cooling roller kiln for firing foamed ceramics - Google Patents
Slow cooling roller kiln for firing foamed ceramics Download PDFInfo
- Publication number
- CN107906950B CN107906950B CN201711465894.1A CN201711465894A CN107906950B CN 107906950 B CN107906950 B CN 107906950B CN 201711465894 A CN201711465894 A CN 201711465894A CN 107906950 B CN107906950 B CN 107906950B
- Authority
- CN
- China
- Prior art keywords
- roller
- cooling
- blowing
- kiln
- groups
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 36
- 238000010583 slow cooling Methods 0.000 title claims abstract description 18
- 238000010304 firing Methods 0.000 title claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 102
- 238000007664 blowing Methods 0.000 claims abstract description 80
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 229910052573 porcelain Inorganic materials 0.000 claims description 10
- 238000005187 foaming Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 238000009413 insulation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011449 brick Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
- 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 being carried by a conveyor
- F27B9/2407—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 being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
-
- 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 specially adapted for furnaces of these types
-
- 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 specially adapted for furnaces of these types
- F27B9/36—Arrangements of heating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D9/00—Cooling of furnaces or of charges therein
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/007—Cooling of charges therein
- F27D2009/0072—Cooling of charges therein the cooling medium being a gas
- F27D2009/0075—Cooling of charges therein the cooling medium being a gas in direct contact with the charge
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Tunnel Furnaces (AREA)
Abstract
The slow cooling roller kiln for firing the foamed ceramics is formed by connecting a plurality of kiln bodies, wherein each kiln body is internally provided with a hollow cavity, a sagger for containing the foamed ceramic raw material, a roller conveying device for conveying the movement of the sagger and a cooling device for blowing cooling air into the kiln body are arranged in the cavity, and at least one group of roller conveying devices periodically rotate back and forth; the two sides of the transmission direction of each group of roller conveying devices are respectively provided with a set of heating elements, and a row of cooling tube groups parallel to the roller conveying devices are arranged above and below each group of roller conveying devices. According to the invention, the cooling pipe groups on the upper part and the lower part of the roller conveying device are used for blowing and cooling the roller conveying device, and the heating elements on the two sides of the roller conveying device are used for temperature compensation, so that cooling air flows are uniformly blown and scattered on the surfaces of the sagger and the foamed ceramic blank body to form a disturbance flow field, each part is uniformly cooled, and the cooling effect and the cooling efficiency are improved.
Description
Technical Field
The invention relates to the field of production of foamed ceramic heat-insulating boards, in particular to a slow cooling roller kiln for firing foamed ceramics.
Background
Currently, as a novel building thermal insulation material, a foamed ceramic thermal insulation board is increasingly applied, the existing foamed ceramic thermal insulation board is usually fired in a gas tunnel kiln or a gas roller kiln, and raw materials are crystallized, foamed and sintered to be formed under specific thermal process conditions. Specifically, raw materials are distributed in a sagger, the sagger is placed on a kiln car paved with refractory materials, a plurality of kiln cars are clung to each other, and the raw materials sequentially pass through sections such as smoke discharging, preheating, heating, constant temperature, quenching, slow cooling and the like in a tunnel kiln along a track, and finally exit the kiln.
After the existing technology for firing the foamed ceramic product heat-insulating plate and the heat-insulating brick is subjected to high-temperature melting foaming, the heat-insulating plate and the heat-insulating brick are required to be subjected to rapid cooling treatment, and a molten liquid phase exists in a blank at the moment in a rapid cooling zone, so that the blank can be directly cooled by blowing air without cracking. The temperature of the fired product is rapidly reduced to below 800 ℃ in a rapid cooling zone and then slowly cooled.
When the existing kiln cools the foamed ceramics slowly, the foamed ceramics are cooled generally through blowing air at the blowing openings at two sides of the kiln wall, so that the side cooling is too fast, the intermediate cooling is uneven, and the cooling effect is poor. Because of the self-heat-preservation characteristic of the foamed ceramic product, good uniform cooling is required, especially when the foamed ceramic product with large specification is fired, the product is easy to crack and deform when the temperature difference is large due to uneven cooling of the section, and the problems result in low cooling efficiency, long firing period and reduced product quality and yield.
Disclosure of Invention
In order to solve the problems of uneven cooling and poor cooling effect, which are caused by slow cooling of the existing kiln for foaming ceramic, and further to lower cooling efficiency and reduce product quality and yield, the invention provides a slow cooling roller kiln for firing foaming ceramic.
The technical scheme adopted by the invention for solving the technical problems is as follows: the slow cooling roller kiln for firing the foamed ceramics is formed by connecting a plurality of kiln bodies, each kiln body is internally provided with a hollow cavity, a sagger for containing the foamed ceramics raw material, a roller conveying device for conveying the sagger to move and a cooling device for blowing cooling air into the kiln body are arranged in the cavity, at least one group of roller conveying devices are horizontally arranged in the cavity, each group of roller conveying devices comprises a row of a plurality of conveying rollers which are rotationally arranged in the cavity in a horizontal plane, and after the ends of the same side of all conveying rollers in the group of roller conveying devices extend out of the kiln body, the rollers are driven to synchronously and periodically rotate by a roller transmission mechanism; a set of heating elements are respectively arranged at two sides of the transmission direction of each set of roller conveying device in the cavity, the heating elements at two sides are positioned at two sides of a sagger placed on the set of roller conveying devices, and each set of heating elements is a furnace wire spirally wound on the surface of the porcelain tube; the upper part and the lower part of each group of roller conveying device are respectively provided with a row of cooling pipe groups parallel to the roller conveying devices, each row of cooling pipe groups consists of a plurality of blowing pipes which are arranged in parallel with the conveying roller in the same horizontal plane, blowing openings for blowing air to the adjacent roller conveying devices are distributed on each blowing pipe along the length direction of each blowing pipe, and each blowing pipe is connected with a cooling air source in the cooling device through a hose so that cooling air flow in the cooling air source enters each blowing pipe and is blown into a cavity of the kiln body through the blowing openings.
As a preferred embodiment of the invention, the kiln body comprises a frame and a fireproof heat-insulating layer paved along the inner wall of the frame, and a hollow cuboid cavity is formed in the middle of the frame after the fireproof heat-insulating layer is paved.
As another preferred embodiment of the present invention, any one of the conveying rollers in each set of roller conveying devices and the conveying roller in the corresponding position in the adjacent roller conveying device are located in the same vertical plane, and each blowing pipe is located above or below the adjacent two conveying rollers in one set of roller conveying devices.
As another preferred embodiment of the present invention, the uppermost row of the cooling tube groups is blown only to the roller conveying devices adjacent below it, and the lowermost row of the cooling tube groups is blown only to the roller conveying devices adjacent above it, and when the roller conveying devices are two or more groups, there is a row of the cooling tube groups between the two groups of the roller conveying devices, and the row of the cooling tube groups is blown to the two groups of the roller conveying devices adjacent to both upper and lower sides thereof, respectively, at the same time.
As another preferred embodiment of the invention, any blowing pipe in the uppermost row of cooling pipe groups is positioned above the middle position of two conveying rollers in the adjacent roller conveying device below the blowing pipe, the blowing ports on the blowing pipe are in two rows, and the two rows of blowing ports incline to blow to the two conveying rollers nearest to the blowing pipe; any blowing pipe in the cooling pipe group at the lowest part is positioned below the middle position of two conveying rollers in the adjacent roller conveying device above the blowing pipe, the blowing ports on the blowing pipe are in two rows, and the two rows of blowing ports incline to blow to the two conveying rollers nearest to the blowing ports; any one blowing pipe in a row of cooling pipe groups between two groups of roller conveying devices is positioned above or below the middle position of two adjacent conveying rollers in any one group of roller conveying devices, four rows of blowing openings on the blowing pipe are inclined to blow to the four nearest conveying rollers.
As another preferred embodiment of the present invention, the angle between the air blast opening and the vertical plane is 15-25 °.
As another preferred embodiment of the invention, the kiln body is also provided with an exhaust device for adjusting the pressure in the kiln body and exhausting hot gas, the exhaust device comprises exhaust pipes respectively arranged at the top of the kiln body, the bottom ends of the exhaust pipes extend into the top of the cavity in the kiln body, and the upper ends of the exhaust pipes are provided with exhaust valves.
As another preferred embodiment of the invention, all blowpipes in each row of cooling pipe groups are communicated with one branch pipe on the kiln body through hoses, all branch pipes are communicated with a main pipeline after being gathered, and the main pipeline is connected with a cooling air source in the cooling device through a pressure reducing valve.
As another preferred embodiment of the invention, the cooling tube sets are closed at one end, the other end is connected with a cooling air source in the cooling device through a hose, and the closed ends of two adjacent rows of cooling tube sets are respectively positioned at two sides of the advancing direction of the roller rod conveying device.
As another preferred embodiment of the present invention, the upper portion of the heating element is above the upper surface of the sagger placed on the roller conveyor corresponding thereto, and the bottom portion of the heating element is higher than the bottom surface of the sagger placed on the set of roller conveyors.
In the invention, the conveying roller is preferably made of silicon carbide;
in the invention, the length of the porcelain tubes in the heating element is fixed, so the heating element is actually formed by arranging a plurality of porcelain tubes along the conveying direction of the roller rod and then spirally winding furnace wires on the surface of the porcelain tubes;
in the invention, the sagger is a cuboid cavity surrounded by a heat-resistant ceramic plate and a bottom plate; the cooling air source provides intermittent pulse cooling air;
in the invention, the roller transmission mechanism drives all conveying rollers in each group of roller conveying devices to synchronously and periodically reciprocate, so that the roller conveying device can be easily realized in the prior art, for example, the transmission mechanism used in a glass tempering furnace is needed, and therefore, the specific structure is not repeated;
in the invention, when two or more roller conveying devices are arranged, the roller conveying devices are uniformly distributed along the height direction of a cavity in the kiln body, a row of cooling pipe groups are shared between two adjacent roller conveying devices, roller sleeves are sleeved at two end parts of any one conveying roller in the roller conveying devices, the conveying rollers are in clearance fit with the roller sleeves, and each roller sleeve is fixed in a refractory heat-insulating layer arranged in the kiln body.
The beneficial effects are that: according to the invention, the reciprocating roller rod conveying device is adopted to drive the sagger containing the foaming ceramic raw material to move back and forth, in the process, the cooling pipe groups on the upper part and the lower part of the sagger are used for blowing and cooling the sagger, and the heating elements on the two sides of the sagger are used for temperature compensation, so that cooling air flows are uniformly blown and scattered on the surfaces of the sagger and the foaming ceramic blank, a disturbance flow field is formed in the cooling process of the foaming ceramic, and all parts are uniformly cooled, so that the cooling effect and the cooling efficiency are improved; the heating elements on the two sides can ensure that the heat is supplemented when the foamed ceramics and the kiln body are cooled too fast, and the edge parts and the center of the foamed ceramic plate are ensured to be cooled uniformly and synchronously.
Drawings
FIG. 1 is a schematic side view of a kiln body of the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a schematic view of the structure of the uppermost blowpipe;
FIG. 5 is a schematic view of the construction of a blowpipe between two sets of roller conveyor devices;
FIG. 6 is a schematic view of the structure of the lowermost blowpipe;
reference numerals: 1. kiln body, 101, frame, 102, refractory insulation layer, 2, roller conveying device, 201, conveying roller, 202, roller transmission mechanism, 3, heating element, 301, porcelain tube, 302, furnace wire, 4, cooling device, 401, cooling air source, 402, relief valve, 403, hose, 404, cooling tube group, 405, blast opening, 5, exhaust device, 501, blast pipe, 502, exhaust valve, 6, sagger.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-6, a slow cooling roller kiln for firing foamed ceramics is formed by connecting a plurality of kiln bodies 1, each kiln body 1 is internally provided with a hollow cavity, a sagger 6 for containing foamed ceramic raw materials, a roller conveying device 2 for conveying the movement of the sagger 6 and a cooling device 4 for blowing cooling air into the kiln bodies 1 are arranged in the cavity, at least one group of roller conveying devices 2 are horizontally arranged in the cavity, each group of roller conveying devices 2 comprises a row of a plurality of conveying rollers 201 which are rotationally arranged in the cavity in a horizontal plane, and after the ends of the same side of all conveying rollers 201 in the group of roller conveying devices 2 extend out of the kiln bodies 1, the rollers are driven to synchronously and periodically rotate by a roller transmission mechanism 202; a set of heating elements 3 is respectively arranged at two sides of the transmission direction of each set of roller conveying device 2 in the cavity, the heating elements 3 at two sides are positioned at two sides of a sagger 6 placed on the set of roller conveying devices 2, and each set of heating elements 3 is a furnace wire 302 spirally wound on the surface of a porcelain tube 301; a row of cooling pipe groups 404 parallel to the roller rod conveying devices 2 are arranged above and below each roller rod conveying device 2, each row of cooling pipe groups 404 consists of a plurality of blowing pipes which are arranged in parallel with the conveying roller rods 201 in the same horizontal plane, blowing openings 405 for blowing air to the adjacent roller rod conveying devices 2 are distributed on each blowing pipe along the length direction of each blowing pipe, and each blowing pipe is connected with a cooling air source 401 in the cooling device 4 through a hose 403, so that cooling air flow in the cooling air source 401 enters each blowing pipe and is blown into a cavity of the kiln body 1 through the blowing openings 405.
The above is a basic embodiment of the present invention, and further improvements, optimizations, and limitations may be made on the above basis:
as a preferred embodiment of the invention, the kiln body 1 comprises a frame 101 and a refractory heat-insulating layer 102 paved along the inner wall of the frame 101, and a hollow cuboid cavity is formed in the middle of the frame 101 after the refractory heat-insulating layer 102 is paved;
as another preferred embodiment of the present invention, any one conveying roller 201 in each set of roller conveying devices 2 and the conveying roller 201 at the corresponding position in the adjacent roller conveying devices 2 are located in the same vertical plane, and each blowing pipe is located above or below two adjacent conveying rollers 201 in one set of roller conveying devices 2;
as another preferred embodiment of the present invention, the uppermost row of the cooling tube groups 404 blows only to the adjacent roller conveying devices 2 below it, the lowermost row of the cooling tube groups 404 blows only to the adjacent roller conveying devices 2 above it, and when the roller conveying devices 2 are more than two groups, a row of the cooling tube groups 404 is provided between the two groups of the roller conveying devices 2, and the row of the cooling tube groups 404 blows simultaneously to the two groups of the roller conveying devices 2 adjacent to the upper and lower sides thereof, respectively;
as another preferred embodiment of the present invention, any one of the blowing pipes in the uppermost row of the cooling pipe group 404 is located above the middle position of the two conveying rollers 201 in the adjacent roller conveying device 2 below the blowing pipe, and the blowing openings 405 on the blowing pipe are in two rows, and the two rows of blowing openings are inclined to blow to the two conveying rollers 201 nearest to the blowing openings; any blowing pipe in the cooling pipe group 404 positioned at the lowest part is positioned below the middle position of two conveying rollers 201 in the adjacent roller conveying device 2 above the blowing pipe, and two rows of blowing openings 405 on the blowing pipe are inclined to blow to the two nearest conveying rollers 201; any one blowing pipe in a row of cooling pipe groups 404 positioned between two groups of roller conveying devices 2 is positioned above or below the middle position of two adjacent conveying rollers 201 in any one group of roller conveying devices 2 in the two groups of roller conveying devices 2, and four rows of blowing openings 405 on the blowing pipe are inclined to blow air to the four nearest conveying rollers 201;
as another preferred embodiment of the present invention, the angle between the air blowing opening 405 and the vertical plane is 15-25 °;
as another preferred embodiment of the present invention, an exhaust device 5 for adjusting the pressure in the kiln body 1 and exhausting hot gas is further disposed in the kiln body 1, the exhaust device 5 includes exhaust pipes 501 disposed at the top of the kiln body 1, the bottom ends of the exhaust pipes 501 extend into the top of the inner chamber of the kiln body 1, and an exhaust valve 502 is disposed at the upper end;
as another preferred embodiment of the present invention, all blowpipes in each row of cooling pipe groups 404 are communicated with one branch pipe on the kiln body 1 through a hose 403, all branch pipes are summarized and then communicated with a main pipe, and the main pipe is connected with a cooling air source 401 in the cooling device 4 through a pressure reducing valve 402;
as another preferred embodiment of the present invention, the cooling tube set 404 is closed at one end and connected at the other end to the cooling air source 401 in the cooling device 4 via a hose 403, and the closed ends of the adjacent two rows of cooling tube sets 404 are located at both sides of the advancing direction of the roller conveyor 2, respectively;
as another preferred embodiment of the present invention, the upper part of the heating element 3 is above the upper surface of the sagger 6 placed on the corresponding roller conveyor 2, and the bottom of the heating element 3 is higher than the bottom surface of the sagger 6 placed on the set of roller conveyors 2;
in the invention, two groups of exhaust devices 5 are arranged at the front and rear sides of the middle of the top of the kiln body 1 respectively;
in the present invention, the conveying roller 201 is preferably made of silicon carbide;
in the invention, since the length of the porcelain tubes 301 in the heating element 3 is fixed, the heating element 3 is actually formed by arranging a plurality of porcelain tubes 301 along the conveying direction of the roller rod and then spirally winding the surface of the porcelain tubes with the furnace wire 302;
in the invention, the sagger 6 is a cuboid cavity surrounded by a heat-resistant ceramic plate and a bottom plate; the cooling air source 401 provides intermittent pulse cooling air, wherein the intermittent pulse cooling air is used for controlling the intermittent air supply of the cooling air source 401 by adopting pulse signals;
in the present invention, the roller transmission mechanism 202 drives all the conveying rollers 201 in each group of roller conveying devices 2 to make synchronous periodic reciprocating rotation, which is easy to be realized in the prior art, for example, the transmission mechanism used in the glass tempering furnace is only needed, therefore, the specific structure is not described in detail;
in the invention, when two or more roller conveying devices 2 are arranged, the roller conveying devices 2 are uniformly distributed along the height direction of the cavity in the kiln body 1, a row of cooling tube groups 404 are shared between two adjacent roller conveying devices 2, roller sleeves are sleeved at two ends of any one conveying roller 201 in the roller conveying devices 2, the conveying roller 201 is in clearance fit with the roller sleeves, and each roller sleeve is fixed in a refractory heat preservation layer 102 arranged in the kiln body 1.
In addition, the number of the roller conveying devices 2 of the present invention may be two, four or more, and fig. 1 to 4 of the present invention only show the layout structure when three sets of roller conveying devices 2 are provided, and when the roller conveying devices 2 are the remaining number, the layout structure is the same as that when three sets of roller conveying devices 2 are provided.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (8)
1. The utility model provides a fire slow cooling roller kiln for foaming ceramic, this slow cooling roller kiln is formed by connecting a plurality of sections kiln body (1), all has hollow cavity in every section kiln body (1), is provided with sagger (6) that are used for holding foaming ceramic raw materials in the cavity, is used for transmitting roller bar conveyor (2) of sagger (6) motion and is used for blowing in cooling air's cooling device (4) in kiln body (1), its characterized in that: the roller conveying devices (2) are at least one group and are horizontally arranged in the cavity, each group of roller conveying devices (2) comprises a row of a plurality of conveying rollers (201) which are rotationally arranged in the cavity in a horizontal plane, and after the ends of the same side of all conveying rollers (201) in the group of roller conveying devices (2) extend out of the kiln body (1), the ends are driven to synchronously and periodically reciprocate by a roller transmission mechanism (202); a set of heating elements (3) is respectively arranged at two sides of the transmission direction of each set of roller conveying device (2) in the cavity, the heating elements (3) at two sides are positioned at two sides of a sagger (6) placed on the set of roller conveying devices (2), and each set of heating elements (3) is a furnace wire (302) spirally wound on the surface of a porcelain tube (301); a row of cooling tube groups (404) parallel to the roller rod conveying devices (2) are arranged above and below each roller rod conveying device (2), each row of cooling tube groups (404) consists of a plurality of blowing pipes which are arranged in parallel to the conveying roller rods (201) in the same horizontal plane, blowing openings (405) for blowing air to the adjacent roller rod conveying devices (2) are distributed on each blowing pipe along the length direction of each blowing pipe, and each blowing pipe is connected with a cooling air source (401) in the cooling device (4) through a hose (403) so that cooling air flow in the cooling air source (401) enters each blowing pipe and is blown into a cavity of the kiln body (1) through the blowing openings (405);
the uniform ends of the cooling tube groups (404) are closed, the other ends of the cooling tube groups are connected with a cooling air source (401) in the cooling device (4) through hoses (403), and the closed ends of two adjacent rows of cooling tube groups (404) are respectively positioned at two sides of the advancing direction of the roller rod conveying device (2);
the upper part of the heating element (3) exceeds the upper surface of the sagger (6) placed on the corresponding roller conveying device (2), and the bottom of the heating element (3) is higher than the bottom surface of the sagger (6) placed on the group of roller conveying devices (2).
2. The slow cooling roller kiln for firing foamed ceramics according to claim 1, wherein: the kiln body (1) comprises a frame (101) and a fireproof heat-insulating layer (102) paved along the inner wall of the frame (101), and a hollow cuboid cavity is formed in the middle of the frame (101) after the fireproof heat-insulating layer (102) is paved.
3. The slow cooling roller kiln for firing foamed ceramics according to claim 1, wherein: any one conveying roller (201) in each group of roller conveying devices (2) and the conveying roller (201) at the corresponding position in the adjacent roller conveying devices (2) are positioned in the same vertical plane, and each blowing pipe is positioned above or below two adjacent conveying rollers (201) in one group of roller conveying devices (2).
4. The slow cooling roller kiln for firing foamed ceramics according to claim 1, wherein: when the roller conveying devices (2) are more than two groups, a row of cooling pipe groups (404) are arranged between the two groups of roller conveying devices (2), and the row of cooling pipe groups (404) respectively blow to the two groups of roller conveying devices (2) which are adjacent to the upper side and the lower side of the roller conveying device.
5. A slow cooling roller kiln for firing foamed ceramics according to claim 1 or 4, characterized in that: any blowing pipe in the uppermost row of cooling pipe groups (404) is positioned above the middle position of two conveying rollers (201) in the adjacent roller conveying device (2) below the blowing pipe, the number of blowing openings (405) on the blowing pipe is two, and the two rows of blowing openings are inclined to blow to the two conveying rollers (201) nearest to the blowing openings; any blowing pipe in a row of cooling pipe groups (404) at the lowest part is positioned below the middle position of two conveying rollers (201) in the adjacent roller conveying device (2) above the blowing pipe, and blowing openings (405) on the blowing pipe are in two rows and are inclined to blow to the two conveying rollers (201) nearest to the blowing openings; any blowing pipe in a row of cooling pipe groups (404) between two groups of roller conveying devices (2) is positioned above or below the middle position of two adjacent conveying rollers (201) in any group of roller conveying devices (2) in the two groups of roller conveying devices (2), and four rows of blowing openings (405) on the blowing pipe are inclined to blow to four nearest conveying rollers (201).
6. The slow cooling roller kiln for firing foamed ceramics according to claim 1, wherein: the included angle between the air blowing opening (405) and the vertical plane is 15-25 degrees.
7. The slow cooling roller kiln for firing foamed ceramics according to claim 1, wherein: the kiln is characterized in that an exhaust device (5) for adjusting the pressure in the kiln body (1) and exhausting hot air is further arranged in the kiln body (1), the exhaust device (5) comprises exhaust pipes (501) respectively arranged at the top of the kiln body (1), the bottom ends of the exhaust pipes (501) extend into the top of the inner cavity of the kiln body (1), and exhaust valves (502) are arranged at the upper ends of the exhaust pipes.
8. The slow cooling roller kiln for firing foamed ceramics according to claim 1, wherein: all blowpipes in each row of cooling pipe groups (404) are communicated with one branch pipe on the kiln body (1) through hoses (403), all the branch pipes are communicated with a main pipeline after being summarized, and the main pipeline is connected with a cooling air source (401) in the cooling device (4) through a pressure reducing valve (402).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711465894.1A CN107906950B (en) | 2017-12-28 | 2017-12-28 | Slow cooling roller kiln for firing foamed ceramics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711465894.1A CN107906950B (en) | 2017-12-28 | 2017-12-28 | Slow cooling roller kiln for firing foamed ceramics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107906950A CN107906950A (en) | 2018-04-13 |
| CN107906950B true CN107906950B (en) | 2024-01-30 |
Family
ID=61871957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711465894.1A Active CN107906950B (en) | 2017-12-28 | 2017-12-28 | Slow cooling roller kiln for firing foamed ceramics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107906950B (en) |
Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4242086A1 (en) * | 1992-12-14 | 1994-06-16 | Haesler Andreas Ing Grad | Heating of ceramic firing kiln - by blowing IC engine exhaust gas through electrically heated burner jet tubes |
| JP2001208475A (en) * | 2000-01-25 | 2001-08-03 | Ngk Insulators Ltd | Dryer with exhaust duct therein |
| CN101250615A (en) * | 2008-03-19 | 2008-08-27 | 苏州中门子科技有限公司 | Severe-convective cooling system for low-pressure continuous protective atmosphere heat treatment furnace |
| CN101256051A (en) * | 2007-03-01 | 2008-09-03 | 松下电器产业株式会社 | Heat treatment device |
| JP2009014256A (en) * | 2007-07-04 | 2009-01-22 | Sumitomo Metal Mining Co Ltd | Continuous baking furnace |
| CN201772741U (en) * | 2010-08-17 | 2011-03-23 | 柳丹 | Energy-saving tube panel system of wide-body roller kiln for roasting penetrated tiles |
| CN202057181U (en) * | 2011-04-29 | 2011-11-30 | 佛山市中瓷万丰陶瓷设备有限公司 | Brick adjustment quench-section roller way for kiln construction |
| CN202350503U (en) * | 2011-10-26 | 2012-07-25 | 宁国市志诚机械制造有限公司 | Resistance wire arrangement structure for tunnel furnace |
| CN203163479U (en) * | 2013-01-21 | 2013-08-28 | 汕头市鸿志电子有限公司 | Electric heating roller kiln |
| CN203216290U (en) * | 2013-03-28 | 2013-09-25 | 山东科恒晶体材料科技有限公司 | High-purity alumina roasting kiln heating unit |
| CN203489674U (en) * | 2013-09-25 | 2014-03-19 | 天津市盛通达实验设备有限公司 | Energy-saving box-type fiber resistance furnace |
| CN103743230A (en) * | 2013-12-03 | 2014-04-23 | 信阳方浩实业有限公司 | Roller kiln for producing light insulation ceramic plates (bricks) |
| CN104154742A (en) * | 2014-09-03 | 2014-11-19 | 江苏宇达环保科技股份有限公司 | SCR fully-automatic temperature control roller electrical kiln |
| CN104515400A (en) * | 2014-12-17 | 2015-04-15 | 广东摩德娜科技股份有限公司 | Indirect cooling device capable of reducing temperature difference of wide-section sintering equipment |
| CN204438724U (en) * | 2014-12-30 | 2015-07-01 | 广东摩德娜科技股份有限公司 | A kind of novel air supply device on energy-saving drying kiln |
| CN105241242A (en) * | 2015-09-18 | 2016-01-13 | 宁国市宏达电炉有限公司 | Bottom filling type medium-frequency induction holding furnace equipment |
| JP2016186389A (en) * | 2015-03-27 | 2016-10-27 | 株式会社Ｓｃｒｅｅｎホールディングス | Firing furnace |
| CN205784587U (en) * | 2016-05-26 | 2016-12-07 | 安徽省含山民生瓷业有限责任公司 | A kind of novel in-glaze decoration ceramic roasting stove |
| CN206056251U (en) * | 2016-08-29 | 2017-03-29 | 信阳科美新型材料有限公司 | Light stone heat insulating decorative board fires roller kilns |
| CN106969632A (en) * | 2017-05-03 | 2017-07-21 | 苏州普热斯勒先进成型技术有限公司 | A kind of multiple-layer box type Hybrid Heating stove |
| CN107300318A (en) * | 2017-08-08 | 2017-10-27 | 湖南金炉科技有限责任公司 | A kind of air-cooled roller kilns |
| CN207716845U (en) * | 2017-12-28 | 2018-08-10 | 洛阳北玻硅巢装备技术有限公司 | A kind of firing foamed ceramic slow cooling roller kilns |
-
2017
- 2017-12-28 CN CN201711465894.1A patent/CN107906950B/en active Active
Patent Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4242086A1 (en) * | 1992-12-14 | 1994-06-16 | Haesler Andreas Ing Grad | Heating of ceramic firing kiln - by blowing IC engine exhaust gas through electrically heated burner jet tubes |
| JP2001208475A (en) * | 2000-01-25 | 2001-08-03 | Ngk Insulators Ltd | Dryer with exhaust duct therein |
| CN101256051A (en) * | 2007-03-01 | 2008-09-03 | 松下电器产业株式会社 | Heat treatment device |
| JP2009014256A (en) * | 2007-07-04 | 2009-01-22 | Sumitomo Metal Mining Co Ltd | Continuous baking furnace |
| CN101250615A (en) * | 2008-03-19 | 2008-08-27 | 苏州中门子科技有限公司 | Severe-convective cooling system for low-pressure continuous protective atmosphere heat treatment furnace |
| CN201772741U (en) * | 2010-08-17 | 2011-03-23 | 柳丹 | Energy-saving tube panel system of wide-body roller kiln for roasting penetrated tiles |
| CN202057181U (en) * | 2011-04-29 | 2011-11-30 | 佛山市中瓷万丰陶瓷设备有限公司 | Brick adjustment quench-section roller way for kiln construction |
| CN202350503U (en) * | 2011-10-26 | 2012-07-25 | 宁国市志诚机械制造有限公司 | Resistance wire arrangement structure for tunnel furnace |
| CN203163479U (en) * | 2013-01-21 | 2013-08-28 | 汕头市鸿志电子有限公司 | Electric heating roller kiln |
| CN203216290U (en) * | 2013-03-28 | 2013-09-25 | 山东科恒晶体材料科技有限公司 | High-purity alumina roasting kiln heating unit |
| CN203489674U (en) * | 2013-09-25 | 2014-03-19 | 天津市盛通达实验设备有限公司 | Energy-saving box-type fiber resistance furnace |
| CN103743230A (en) * | 2013-12-03 | 2014-04-23 | 信阳方浩实业有限公司 | Roller kiln for producing light insulation ceramic plates (bricks) |
| CN104154742A (en) * | 2014-09-03 | 2014-11-19 | 江苏宇达环保科技股份有限公司 | SCR fully-automatic temperature control roller electrical kiln |
| CN104515400A (en) * | 2014-12-17 | 2015-04-15 | 广东摩德娜科技股份有限公司 | Indirect cooling device capable of reducing temperature difference of wide-section sintering equipment |
| CN204438724U (en) * | 2014-12-30 | 2015-07-01 | 广东摩德娜科技股份有限公司 | A kind of novel air supply device on energy-saving drying kiln |
| JP2016186389A (en) * | 2015-03-27 | 2016-10-27 | 株式会社Ｓｃｒｅｅｎホールディングス | Firing furnace |
| CN105241242A (en) * | 2015-09-18 | 2016-01-13 | 宁国市宏达电炉有限公司 | Bottom filling type medium-frequency induction holding furnace equipment |
| CN205784587U (en) * | 2016-05-26 | 2016-12-07 | 安徽省含山民生瓷业有限责任公司 | A kind of novel in-glaze decoration ceramic roasting stove |
| CN206056251U (en) * | 2016-08-29 | 2017-03-29 | 信阳科美新型材料有限公司 | Light stone heat insulating decorative board fires roller kilns |
| CN106969632A (en) * | 2017-05-03 | 2017-07-21 | 苏州普热斯勒先进成型技术有限公司 | A kind of multiple-layer box type Hybrid Heating stove |
| CN107300318A (en) * | 2017-08-08 | 2017-10-27 | 湖南金炉科技有限责任公司 | A kind of air-cooled roller kilns |
| CN207716845U (en) * | 2017-12-28 | 2018-08-10 | 洛阳北玻硅巢装备技术有限公司 | A kind of firing foamed ceramic slow cooling roller kilns |
Non-Patent Citations (1)
| Title |
|---|
| 超宽体辊道窑结构的设计;谭映山;中国陶瓷工业;第22卷(第6期);36-40 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107906950A (en) | 2018-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107917615B (en) | Multistage roller kiln for firing foamed ceramic insulation board | |
| US3809544A (en) | Method and apparatus for heating,annealing,tempering,decorating and handling glassware | |
| CN107108311A (en) | For the apparatus and method for the sheet glass for being molded or shaping heating | |
| JPS58501629A (en) | forehearth | |
| CN107906950B (en) | Slow cooling roller kiln for firing foamed ceramics | |
| CN109028937A (en) | A kind of firing foamed ceramic product multisection type roller kilns | |
| CN207716843U (en) | A kind of foamed ceramic firing electricity consumption heated table kiln firing system | |
| CN104561515B (en) | Continuous way bar plate heating stove and heating means thereof | |
| KR890002783B1 (en) | Tunnel kiln | |
| CN211204879U (en) | Gas heat preservation control system of roller kiln cooling zone of glazed decorative brick of foamed ceramic | |
| CN207907686U (en) | A kind of firing exterior insulation multisection type roller kilns | |
| CN207716845U (en) | A kind of firing foamed ceramic slow cooling roller kilns | |
| CN108640492B (en) | A kind of glass tempering furnace | |
| US3744965A (en) | Tunnel kiln | |
| CN208704429U (en) | A kind of firing foamed ceramic product multisection type roller kilns | |
| CN207716842U (en) | A kind of foamed ceramic firing instant cold section roller kilns | |
| US2856172A (en) | Sectional continuous furnace-kiln | |
| CN202002465U (en) | Thermal-insulating ceramic ornamental face brick baking roller hearth kiln | |
| CN214148791U (en) | Be applied to experiment roll table kiln of firing ceramic wall ceramic tile | |
| CN110487073B (en) | Energy-saving partition-free double-layer roller kiln | |
| CN107940989A (en) | A kind of foamed ceramic fires electricity consumption heated table kiln firing system and application method | |
| CN210663859U (en) | Energy-saving double-layer roller kiln without partition plate | |
| CN106322989B (en) | It is a kind of be used to prepare crystallite foaming composite material burn till annealing trunnel kiln | |
| US1982478A (en) | Method of and apparatus for annealing glassware | |
| WO2015015263A2 (en) | A radiating heating module for continuous-cycle firing kilns of ceramic products |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190918 Address after: No. 166, Luoyi Road, Luoyang high tech Zone, Henan Province Applicant after: Luoyang Beibao Silicon Nest Technology Co.,Ltd. Address before: No. 166, Luoyi Road, Luoyang high tech Zone, Henan Province Applicant before: LUOYANG NORTHGLASS SILICON NEST EQUIPMENT TECHNOLOGY CO.,LTD. Applicant before: LUOYANG NORTHGLASS TECHNOLOGY Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No.166, Luoyi Road, high tech Zone, Luoyang City, Henan Province Applicant after: Luoyang Beibo Light Crystal Technology Co.,Ltd. Address before: No.166, Luoyi Road, high tech Zone, Luoyang City, Henan Province Applicant before: Luoyang Beibao Silicon Nest Technology Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |