CN220728910U - Kiln and kiln system - Google Patents

Abstract

The utility model relates to an energy memory production technical field particularly, relates to a kiln and kiln system, the unit of airing exhaust of stove tail includes stop valve, stove tail air exhaust fan and stove tail exhaust pipe, the one end of stove tail air exhaust pipe with the house steward intercommunication of airing exhaust, the other end of stove tail air exhaust pipe with the fan intercommunication of airing exhaust of stove tail, the stop valve install in the stove tail air exhaust pipe, just the stop valve is located the house steward of airing exhaust with between the fan of airing exhaust of stove tail. The aim of the present application is to provide a kiln and a kiln system, which aim at least one technical problem described in the prior art.

Description

Kiln and kiln system

Technical Field

The application relates to the technical field of energy storage device production, in particular to a kiln and a kiln system.

Background

The lithium ion battery has the advantages of high voltage, high capacity, good cyclicity, good safety, environmental protection, no memory effect, rapid charge and discharge and the like, and is widely applied to energy storage power supply systems such as hydraulic power, firepower, wind power, solar power stations and the like, and a plurality of fields such as electric tools, electric motorcycles, military equipment, aerospace and the like. At present, lithium batteries are gradually expanded to the fields of electric bicycles, electric automobiles and the like. In lithium ion batteries, the positive electrode material accounts for 1/3 of the total battery, and the cost is 70% of the total finished product.

In the production process of the anode material, the roasting process is particularly critical, the influence of the temperature and atmosphere during roasting on the product performance is very obvious, and the maintenance of the stable temperature field and kiln atmosphere during the reaction process is a key factor for ensuring the product performance. The tail exhaust and the cooling exhaust of the kiln share one exhaust pipeline, and because the tail exhaust pipeline and the cooling exhaust pipeline are mutually communicated, air flow in the cooling exhaust pipeline is easy to flow backwards into the tail exhaust pipeline of the kiln to enter the hearth, so that the atmosphere in the kiln is unstable.

Disclosure of Invention

The present application aims to address at least one technical problem described in the background art, and to provide a kiln and a kiln system.

In order to achieve the above purpose, the present application adopts the following technical scheme:

one aspect of the application provides a kiln, comprising an exhaust header pipe, a cooling exhaust unit, a tail exhaust unit and a kiln body, wherein a kiln hearth is formed in the kiln body and comprises a kiln cooling section and a kiln roasting section, the kiln body comprises a jacket, the position of the jacket corresponds to that of the kiln cooling section, the cooling exhaust unit is communicated with an inner cavity of the jacket, the tail exhaust unit is communicated with the kiln roasting section, the cooling exhaust unit is communicated with the exhaust header pipe,

the tail exhaust unit comprises a stop valve, a tail exhaust fan and a tail exhaust pipeline, one end of the tail exhaust pipeline is communicated with the exhaust main pipe, the other end of the tail exhaust pipeline is communicated with the tail exhaust fan, the stop valve is arranged on the tail exhaust pipeline, and the stop valve is positioned between the exhaust main pipe and the tail exhaust fan.

Optionally, an air inlet communicated with the inner cavity of the jacket is formed at the top end of the jacket.

The beneficial effect of this technical scheme lies in: compared with the method that the gas outside the kiln is directly sent into the kiln cooling section in the hearth to cool the corresponding materials, the gas flows sequentially through the air inlet, the inner cavity of the jacket and the cooling exhaust unit to cool the kiln cooling section, and the cooling gas flow can hardly disturb the atmosphere in the kiln hearth.

Optionally, at least two air inlets are formed on the jacket, the kiln cooling section and the kiln roasting section are arranged in a first direction, and each air inlet is arranged in the first direction, and the first direction is parallel to a horizontal plane.

The beneficial effect of this technical scheme lies in: the more air inlets can increase the air flow entering the inner cavity of the jacket, so that the cooling speed of the cooling section of the kiln is increased; and the air inlets are arranged in the first direction, so that the air flow entering the jacket from the air inlets can comprehensively cover the kiln cooling section, and each part of the kiln cooling section can be cooled more uniformly.

Optionally, the cooling exhaust unit further includes a cooling exhaust pipe, a cooling exhaust fan and a cooling exhaust air pipe, the cooling exhaust air pipe includes a cooling exhaust main pipe portion and a plurality of cooling exhaust branch pipe portions all with the cooling exhaust main pipe portion communicates, the cooling exhaust main pipe portion with the cooling exhaust fan communicates, each cooling exhaust branch pipe portion all with the inner chamber of jacket communicates in the first direction each cooling exhaust branch pipe portion with each air intake staggered arrangement, one end of the cooling exhaust pipe is connected the main pipe of airing exhaust, the other end of the cooling exhaust pipe is connected the cooling exhaust fan.

The beneficial effect of this technical scheme lies in: and the cooling exhaust branch pipe parts and the air inlets are staggered in the first direction, so that air flow entering the inner cavity of the jacket through the air inlets can be timely discharged by the cooling exhaust branch pipe parts, the heat exchange efficiency between the air flow and air in the cooling section of the kiln is improved, and the heat exchange speed is improved.

Optionally, a plurality of cooling air outlets communicated with the inner cavity of the jacket are arranged at the top end of the jacket, and each cooling air outlet is communicated with each cooling air exhaust branch pipe part in a one-to-one correspondence manner.

The beneficial effect of this technical scheme lies in: because the hot air flows upwards and the cold air flows downwards when convection is formed by the cold air flows, the cooling air outlet is arranged at the top end of the jacket, and the upward flowing hot air which has completed heat exchange with the air in the cooling section of the kiln is easier to discharge from the inner cavity of the jacket, so that the cooling efficiency of the cooling section of the kiln is improved.

Optionally, the tail air exhaust unit further includes a tail air exhaust air pipe, the tail air exhaust air pipe includes a tail air exhaust main pipe portion and a plurality of tail air exhaust branch pipe portions all communicated with the tail air exhaust main pipe portion, each the tail air exhaust branch pipe portion is communicated with the kiln roasting section, and each the tail air exhaust branch pipe portions are uniformly arranged in the first direction.

The beneficial effect of this technical scheme lies in: therefore, the air flow in the kiln roasting section can be uniformly sent out through the exhaust branch pipe parts at the tail of the kiln, so that the air flow in the kiln roasting section can flow relatively smoothly, and the disturbance to the atmosphere in the kiln roasting section is reduced.

Optionally, a plurality of tail air exhaust ports communicated with the kiln roasting section are arranged at the top end of the kiln body, and each tail air exhaust port is communicated with each tail air exhaust branch pipe part in a one-to-one correspondence manner.

The beneficial effect of this technical scheme lies in: the hotter air flow in the kiln roasting section can rise from bottom to top, and the tail air exhaust port is arranged at the top end of the kiln body, so that the hotter air flow can be discharged in a homeotropic manner, and the disturbance of the atmosphere in the kiln roasting section caused by the change of the air flow direction is reduced.

Optionally, a heat insulation layer is covered on the top of the kiln body, the position of the heat insulation layer corresponds to the position of the kiln roasting section, and the tail exhaust branch pipe part penetrates through the heat insulation layer and is connected with the tail exhaust air port.

The beneficial effect of this technical scheme lies in: the heat preservation layer can reduce heat loss of a roasting section of the kiln and improve the quality of a roasted workpiece; in particular, the heat in the kiln roasting section is not easy to be lost from the top of the kiln roasting section, the temperature difference between the upper gas and the lower gas in the kiln roasting section is reduced, and then the condition of air flow convection is reduced, so that the aim of reducing atmosphere disturbance is fulfilled.

Optionally, the tail air exhaust unit further comprises a control module, wherein the control module is used for opening the stop valve when the tail air exhaust fan is started so that air flow can enter the tail air exhaust pipeline, and is used for closing the stop valve when the tail air exhaust fan is closed.

The beneficial effect of this technical scheme lies in: the stop valve and the tail exhaust fan are simultaneously opened and simultaneously closed, so that the possibility that air flow flows backwards into the roasting section of the kiln from the tail exhaust pipeline can be effectively reduced; compared with a control module which is used for enabling the stop valve and the tail exhaust fan to be opened and/or closed in sequence, the control module which is needed by enabling the stop valve and the tail exhaust fan to be opened and closed simultaneously is relatively simple in structure, easier to manufacture and lower in cost.

Another aspect of the present application provides a kiln system comprising a sagger and a kiln provided herein, the sagger disposed within the kiln firebox.

Optionally, the system provided by the application further comprises an air inlet device, wherein the air inlet device is arranged below the sagger, and the air inlet device is communicated with the kiln hearth.

The beneficial effect of this technical scheme lies in: because when the air current is formed, the hot air flows from bottom to top, and the air inlet device is arranged below the sagger, when the air enters the kiln hearth from the lower part of the sagger, the original hot air in the kiln hearth can enter the tail exhaust air pipe in a homeotropic manner, so that the convection which possibly occurs in the kiln hearth is reduced, and the disturbance to the atmosphere in the hearth is reduced.

The technical scheme that this application provided can reach following beneficial effect:

the utility model provides a kiln and kiln system, when using, the cooling exhaust unit is arranged in the gas discharge in the inner chamber of clamp cover, the tail exhaust unit is arranged in the gas discharge in the kiln calcination section, when need not to discharge the interior gas of kiln calcination section, when need stop the tail exhaust fan, need at first close the stop valve, perhaps close the stop valve when stopping tail exhaust fan, make the air current can no longer circulate in the tail exhaust pipe, and then make the air current that circulates in the cooling exhaust pipe be difficult to get into in the kiln calcination section through the tail exhaust pipe, make the air current in the cooling exhaust pipe flow backward flow kiln calcination section difficult to take place, reach the purpose that reduces the inside possibility that appears the atmosphere unstable condition of kiln.

Additional features and advantages of the present application will be set forth in the description which follows, or may be learned by the practice of the present application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are used in the description of the embodiments will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are of some embodiments of the present application and that other drawings may be derived from these drawings without the exercise of inventive effort.

FIG. 1 is a schematic view of a portion of a kiln system according to an embodiment of the present application;

FIG. 2 is a schematic view of a part of the structure of an embodiment of a kiln provided in the examples of the present application;

fig. 3 is a schematic view of a part of the structure of an embodiment of a kiln according to an embodiment of the present application.

Reference numerals:

1-a kiln roasting section; 2-an insulating layer;

3-a kiln cooling section; 4-sagger;

5-jacket; 6, an air inlet;

7-a furnace tail exhaust air pipe; 8-cooling the exhaust air pipe;

9-cooling an exhaust fan; 10-a furnace tail exhaust fan;

11-cooling exhaust pipes; 12-a tail exhaust pipeline;

13-an exhaust header pipe; 14-a stop valve;

15-kiln hearth; 16-cooling the main exhaust pipe part;

17-cooling exhaust branch pipe part; 18-main exhaust pipe part of furnace tail;

19-a tail exhaust branch pipe part; 20-filtering net.

Detailed Description

The following description of the embodiments of the present application will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

As shown in fig. 1 to 3, one aspect of the present application provides a kiln, comprising an exhaust header 13, a cooling exhaust unit, a tail exhaust unit and a kiln body, wherein a kiln hearth 15 is formed in the kiln body, the kiln hearth 15 comprises a kiln cooling section 3 and a kiln roasting section 1, the kiln body comprises a jacket 5, the position of the jacket 5 corresponds to the position of the kiln cooling section 3, the cooling exhaust unit is communicated with an inner cavity of the jacket 5, the tail exhaust unit is communicated with the kiln roasting section 1, the cooling exhaust unit is communicated with the exhaust header 13,

the tail exhaust unit comprises a stop valve 14, a tail exhaust fan 10 and a tail exhaust pipeline 12, one end of the tail exhaust pipeline 12 is communicated with the exhaust main pipe 13, the other end of the tail exhaust pipeline 12 is communicated with the tail exhaust fan 10, the stop valve 14 is arranged on the tail exhaust pipeline 12, and the stop valve 14 is positioned between the exhaust main pipe 13 and the tail exhaust fan 10.

The kiln that this application provided, when using, the cooling exhaust unit is arranged in the gas discharge in the inner chamber of pressing from both sides cover 5, the tail exhaust unit is arranged in the gas discharge in the kiln calcination section 1, when need not to discharge the interior gas of kiln calcination section 1, when need stop tail exhaust fan 10, need at first close stop valve 14, perhaps close stop valve 14 when stopping tail exhaust fan 10, make the air current can no longer circulate in tail exhaust duct 12, and then make the air current that circulates in the cooling exhaust duct be difficult to get into in the kiln calcination section 1 through tail exhaust duct 12, make the air current in the cooling exhaust duct flow backward flow kiln calcination section 1's the difficult emergence, reach the purpose that reduces the inside possibility that appears the atmosphere unstable condition of kiln.

Optionally, an air inlet 6 communicating with the inner cavity of the jacket 5 is formed at the top end of the jacket 5.

That is, the gas enters the inner cavity of the jacket 5 from the outside of the kiln through the air inlet 6 to cool the kiln cooling section 3, and the gas absorbs heat and then is discharged through the cooling exhaust unit and the exhaust manifold 13 in sequence.

Compared with the method that the gas outside the kiln is directly sent into the kiln cooling section 3 in the hearth to cool the corresponding materials, the gas flows through the air inlet 6, the inner cavity of the jacket 5 and the cooling exhaust unit in sequence to cool the kiln cooling section 3, and the cooling gas flow can hardly disturb the atmosphere in the kiln hearth. Preferably, a filter screen 20 is provided on the air intake 6.

Optionally, at least two air inlets 6 are formed on the kiln body, the kiln cooling section 3 and the kiln roasting section 1 are arranged in a first direction, and each air inlet 6 is arranged in the first direction, and the first direction is parallel to a horizontal plane.

The parallelism described in the embodiments of the present application include absolute parallelism and approximate parallelism. In this embodiment, the number of the air inlets 6 may be two, five, seven or nine, and preferably, the number of the air inlets 6 is seven.

The more air inlets 6 can increase the air flow entering the inner cavity of the jacket 5, so as to increase the cooling speed of the kiln cooling section 3; and each air inlet 6 is arranged in the first direction, so that the air flow entering the jacket 5 from each air inlet 6 can cover the kiln cooling section 3 more comprehensively, and each part of the kiln cooling section 3 can be cooled more uniformly. Of course, in the embodiment of the present application, the air inlets 6 may be arranged in a direction perpendicular to the first direction and parallel to the horizontal plane.

Optionally, the cooling exhaust unit further includes a cooling exhaust pipe, cooling exhaust fans 9 and a cooling exhaust air pipe 8, the cooling exhaust air pipe 8 includes a cooling exhaust main pipe portion 16 and a plurality of cooling exhaust branch pipe portions 17 that are all communicated with the cooling exhaust main pipe portion 16, the cooling exhaust main pipe portion 16 is communicated with the cooling exhaust fans 9, each cooling exhaust branch pipe portion 17 is all communicated with an inner cavity of the jacket 5 in the first direction, each cooling exhaust branch pipe portion 17 and each air inlet 6 are staggered, one end of the cooling exhaust pipe 11 is connected with the exhaust main pipe 13, and the other end of the cooling exhaust pipe 11 is connected with the cooling exhaust fans 9.

The plurality of fingers in the embodiments of the present application refer to at least two. Preferably, there is only one cooling exhaust branch pipe portion 17 between each adjacent two of the air intake openings 6, and there is only one air intake opening 6 between each adjacent two of the cooling exhaust branch pipe portions 17.

In the first direction, the cooling exhaust branch pipe parts 17 and the air inlets 6 are staggered, so that air flow entering the inner cavity of the jacket 5 through the air inlets 6 can be timely discharged by the cooling exhaust branch pipe parts 17, the heat exchange efficiency between the air flow and air in the kiln cooling section 3 is improved, and the heat exchange speed is improved. Of course, the cooling exhaust branch pipe portions 17 and the air inlets 6 may be provided separately from each other, instead of being staggered.

Optionally, a plurality of cooling air outlets are arranged at the top end of the jacket 5 and communicated with the inner cavity of the jacket 5, and each cooling air outlet is communicated with each cooling air exhaust branch pipe part 17 in a one-to-one correspondence.

Because the hot air flows upwards and the cold air flows downwards when convection is formed by the cold air flows, the cooling air outlet is arranged at the top end of the jacket 5, and the upward flowing hot air which has completed heat exchange with the air in the kiln cooling section 3 flows more easily to be discharged from the inner cavity of the jacket 5, so that the cooling efficiency of the kiln cooling section 3 is improved.

Optionally, the tail air exhaust unit further includes a tail air exhaust air duct 7, the tail air exhaust air duct 7 includes a tail air exhaust main pipe portion 18 and a plurality of tail air exhaust branch pipe portions 19 all communicating with the tail air exhaust main pipe portion 18, each of the tail air exhaust branch pipe portions 19 communicates with the kiln roasting section 1, and each of the tail air exhaust branch pipe portions 19 is uniformly arranged in the first direction.

In this way, the air flow of the kiln roasting section 1 can be uniformly sent out through the tail exhaust branch pipe parts 19, so that the air flow in the kiln roasting section 1 can flow relatively smoothly, and the disturbance to the atmosphere in the kiln roasting section 1 is reduced. Of course, only one tail gas exhaust branch pipe portion 19 may be provided, or each may be provided; the tail gas exhaust branch pipe portions 19 are aligned in a direction perpendicular to the first direction.

Optionally, a plurality of tail air exhaust ports communicated with the kiln roasting section 1 are arranged at the top end of the kiln body, and each tail air exhaust port is communicated with each tail air exhaust branch pipe part 19 in a one-to-one correspondence manner.

The hotter air flow in the kiln roasting section 1 can rise from bottom to top, and the tail air exhaust port is arranged at the top end of the kiln body, so that the hotter air flow can be discharged in a proper direction, and the disturbance of the atmosphere in the kiln roasting section 1 caused by the change of the air flow direction is reduced.

Optionally, a heat insulation layer 2 is covered on the top of the kiln body, the position of the heat insulation layer 2 corresponds to the position of the kiln roasting section 1, and the tail exhaust branch pipe part 19 penetrates through the heat insulation layer 2 and is connected with the tail exhaust air port.

In the embodiment of the application, the heat insulation layer 2 preferably comprises heat insulation bricks and heat insulation cotton. The heat preservation layer 2 is arranged to reduce heat loss of the kiln roasting section 1 and improve the quality of the roasted workpiece; in particular, the heat in the kiln roasting section 1 is not easy to run off from the top of the kiln roasting section 1, the temperature difference between the upper gas and the lower gas in the kiln roasting section 1 is reduced, and then the condition of air flow convection is reduced, so that the aim of reducing atmosphere disturbance is achieved. Of course, the heat-insulating layer 2 can also be made to wrap the whole furnace body.

Optionally, the tail gas exhaust unit further comprises a control module for opening the shut-off valve 14 while the tail gas exhaust fan 10 is activated, enabling a gas flow into the tail gas exhaust duct 12, and for closing the shut-off valve 14 while the tail gas exhaust fan 10 is closed. The stop valve 14 and the tail exhaust fan 10 are simultaneously opened and simultaneously closed, so that the possibility that air flows back into the kiln roasting section 1 from the tail exhaust pipeline 12 can be effectively reduced; compared with the control module which is used for enabling the stop valve 14 and the tail air exhaust fan 10 to be opened and/or closed successively, the control module which is needed for enabling the stop valve 14 and the tail air exhaust fan 10 to be opened and closed simultaneously is relatively simple in structure, easier to manufacture and lower in cost. In this embodiment of the application, the control module may be an electric control switch, where the electric control switch is connected to the stop valve 14 and the tail exhaust fan 10, and the electric control switch controls the stop valve 14 and the tail exhaust fan 10 to open and close simultaneously, and the electric control unit may also be a controller, where the controller opens and closes the stop valve 14 and the tail exhaust fan 10 simultaneously according to a user input signal or according to a preset condition.

Another aspect of the present application provides a kiln system comprising a sagger 4 and a kiln provided herein, the sagger 4 being disposed within the kiln firebox 15.

According to the kiln system provided by the embodiment of the application, the kiln provided by the embodiment of the application is adopted, when the kiln is used, the cooling exhaust unit is used for exhausting gas in the inner cavity of the jacket 5, the tail exhaust unit is used for exhausting gas in the kiln roasting section 1, when the tail exhaust fan 10 is required to be stopped without exhausting gas in the kiln roasting section 1, the stop valve 14 is required to be closed firstly, or the stop valve 14 is required to be closed when the tail exhaust fan 10 is stopped, so that gas flow can not circulate in the tail exhaust pipeline 12 any more, and then the gas flow circulated in the cooling exhaust pipeline 11 is difficult to enter the kiln roasting section 1 through the tail exhaust pipeline 12, so that the situation that the gas flow in the cooling exhaust pipeline 11 flows backwards into the kiln roasting section 1 is difficult to occur, and the aim of reducing the possibility of unstable atmosphere in the kiln is achieved.

Preferably, the kiln system further comprises a control cabinet, the cooling exhaust fan 9, the tail exhaust fan 10 and the stop valve 14 are all connected with the control cabinet, wherein the tail exhaust fan 10 and the stop valve 14 share a group of control programs, and can be controlled to start and stop simultaneously.

Optionally, the kiln system provided by the embodiment of the application further comprises an air inlet device, wherein the air inlet device is arranged below the sagger 4, and the air inlet device is communicated with the kiln hearth.

Because when the air flow is formed, hot air flows from bottom to top, and the air inlet device is arranged below the sagger 4, when the air enters the kiln hearth from the lower part of the sagger 4, the original hot air in the kiln hearth can enter the tail air exhaust pipe in a homeotropic manner, so that the convection which possibly occurs in the kiln hearth is reduced, and the disturbance to the atmosphere in the hearth is reduced.

In order to better explain the kiln and the kiln system provided by the application, the application also provides an application example of the kiln and the kiln system, wherein the application example is as follows:

therefore, the kiln atmosphere is ensured to be stable, and besides ensuring normal air inlet and exhaust, the cooling exhaust is prevented from forming an air flow backward flow to the inside of the kiln body through tail exhaust, so the application example provides a control device of the kiln exhaust system to solve the problems.

The application example provides a control device for a kiln exhaust system, which solves the problem that the atmosphere in the kiln is unstable because the tail exhaust pipeline and the cooling exhaust pipeline are mutually communicated, and the kiln is easy to generate air flow in the cooling exhaust pipeline to flow backwards into the kiln tail exhaust pipeline to enter the hearth.

In order to achieve the purpose of preventing air flow from flowing backwards and guaranteeing stable kiln atmosphere, the application example provides the following technical scheme:

the control device for the kiln exhaust system comprises a kiln hearth, wherein the hearth is communicated with a kiln cooling section, a kiln tail exhaust pipe is connected above the hearth, the kiln tail exhaust pipe is connected with a kiln tail exhaust fan, the kiln tail exhaust fan is connected with an exhaust main pipeline, a jacket is arranged on the periphery of the kiln cooling section, an air inlet and an exhaust pipe are sleeved on the jacket, the exhaust pipe is connected with the exhaust fan, and the exhaust fan is connected with the exhaust main pipeline. A stop valve is arranged between the furnace tail exhaust fan and the exhaust main pipeline.

The cooling exhaust fan, the furnace tail exhaust fan and the stop valve are all connected with the control cabinet, wherein the furnace tail exhaust fan and the stop valve share a group of control programs, and can be controlled to start and stop simultaneously.

The control device of the kiln exhaust system comprises a kiln hearth, wherein the top of the kiln hearth is provided with insulating bricks and heat insulation cotton, a kiln cooling section communicated with the kiln hearth is provided with a sagger for containing materials, a jacket is arranged outside the kiln cooling section, the jacket is provided with an air inlet and a cooling exhaust air pipe, the air inlet is matched with an air filtering device, the cooling exhaust air pipe is connected with a cooling exhaust fan, and the cooling exhaust fan is connected with a cooling exhaust pipeline.

The kiln furnace is connected with a tail exhaust air pipe, the tail exhaust air pipe is connected with a tail exhaust fan, the tail exhaust fan is connected with a tail exhaust pipeline, the tail exhaust pipeline and the cooling exhaust pipeline are connected to the outside of an exhaust main pipe exhaust workshop, and a stop valve is arranged at the tail end of the tail exhaust pipeline.

Kiln furnace and tail wind pipe of airing exhaust, tail wind pipe and tail wind fan of airing exhaust, tail wind fan and tail wind pipe of airing exhaust, tail wind pipe and stop valve, stop valve and main pipe of airing exhaust, jacket and cooling wind pipe, cooling wind pipe and cooling wind fan of airing exhaust, cooling wind fan and cooling wind pipe of airing exhaust, cooling wind pipe and main pipe of airing exhaust all use flange to connect, have high temperature resistant rubber gasket between the flange.

The cooling exhaust fan, the furnace tail exhaust fan and the stop valve are all connected with the control cabinet, wherein the furnace tail exhaust fan and the stop valve share a group of control programs, and can be controlled to start and stop simultaneously.

Compared with the prior art, the application example provides a control device for a kiln exhaust system, which has the following beneficial effects:

the application example is used for a control device of a kiln exhaust system, the kiln tail exhaust motor and the stop valve are controlled by the same control module through control program linkage, the stop valve is simultaneously and automatically opened when the kiln tail exhaust motor needs to be opened in the process requirement, and the stop valve is simultaneously and automatically closed when the kiln tail exhaust motor needs to be closed in the process requirement production process. The hidden trouble that the internal atmosphere of the kiln is unstable due to the fact that the tail exhaust motor is closed and the cooling exhaust motor is opened and the air flow in the cooling pipeline flows backward into the tail exhaust pipeline and enters the kiln chamber is prevented, and the effect of ensuring the stable air pressure and oxygen content of the kiln chamber is achieved.

And (3) starting a cooling exhaust fan, enabling air flow to enter from the air inlet, cooling hearth materials through the jacket, cooling the hearth materials to a cooling exhaust air pipe and a cooling exhaust pipeline, and finally summarizing the materials to an exhaust main pipe to be discharged out of a workshop.

And starting a furnace tail exhaust fan, and finally summarizing exhaust gas generated in the hearth outside the exhaust workshop through a furnace tail exhaust air pipe and a furnace tail exhaust pipeline.

When the tail exhaust fan is closed and the cooling exhaust fan is started according to the process requirements, a part of air flow can flow into the tail exhaust pipe from the cooling exhaust pipe and finally enter the hearth, atmosphere in the hearth is finally abnormal, a stop valve is additionally arranged at the tail end of the tail exhaust pipe, and the opening of the stop valve is synchronous with the tail exhaust fan, so that the hidden danger of unstable hearth atmosphere caused by air flow backflow is effectively solved, and the effect of ensuring stable air pressure and oxygen content of the hearth of the kiln is achieved.

The application example relates to the field of kilns and provides a method for controlling an exhaust system of a kiln. The furnace tail exhaust pipeline and the cooling exhaust pipeline are mutually communicated, when the furnace tail exhaust fan is closed and the cooling exhaust fan is opened, air flow backflow is easy to form, the stop valve is additionally arranged on the furnace tail exhaust pipeline and is opened and closed to be linked with the exhaust fan, when the furnace tail fan is closed, the stop valve is automatically closed, the air flow backflow of the furnace exhaust can be prevented, and the stable air pressure and oxygen content of a furnace hearth of the furnace are ensured. The method has the characteristics of low cost, simple operation, stable reaction pressure and atmosphere, and the like, and can be used as one of the methods for ensuring the stable atmosphere of the kiln body.

The furnace tail exhaust pipeline and the cooling exhaust pipeline are connected to the exhaust main pipe to be discharged out of the workshop, and a stop valve is not arranged.

Kiln furnace and tail tuber pipe of airing exhaust, tail tuber pipe and tail fan of airing exhaust of stove tail fan and tail exhaust pipe, tail tuber pipe and stop valve, stop valve and main pipe of airing exhaust, clamp cover and cooling tuber pipe of airing exhaust, cooling tuber pipe and cooling fan of airing exhaust, cooling fan and cooling tuber pipe of airing exhaust, cooling tube and main pipe of airing exhaust, the connector uses flange or sleeve joint, does not have rubber gasket between the flange, and is sealed not tight.

The jacket is provided with an air inlet, the air inlet belongs to an open type, dust and fragments are sucked, and normal operation of the equipment is affected.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (11)

1. The kiln is characterized by comprising an exhaust main pipe, a cooling exhaust unit, a kiln tail exhaust unit and a kiln body, wherein a kiln hearth is formed in the kiln body and comprises a kiln cooling section and a kiln roasting section, the kiln body comprises a jacket, the position of the jacket corresponds to that of the kiln cooling section, the cooling exhaust unit is communicated with an inner cavity of the jacket, the kiln tail exhaust unit is communicated with the kiln roasting section, the cooling exhaust unit is communicated with the exhaust main pipe,

the tail exhaust unit comprises a stop valve, a tail exhaust fan and a tail exhaust pipeline, one end of the tail exhaust pipeline is communicated with the exhaust main pipe, the other end of the tail exhaust pipeline is communicated with the tail exhaust fan, the stop valve is arranged on the tail exhaust pipeline, and the stop valve is positioned between the exhaust main pipe and the tail exhaust fan.

2. The kiln of claim 1, wherein an air inlet is formed at a top end of the jacket in communication with the interior cavity of the jacket.

3. The kiln of claim 2, wherein at least two of the air intakes are formed in the jacket, the kiln cooling section and the kiln firing section being aligned in a first direction, each of the air intakes being aligned in the first direction, the first direction being parallel to a horizontal plane.

4. The kiln of claim 3, wherein the cooling exhaust unit further comprises a cooling exhaust duct, a cooling exhaust fan and a cooling exhaust duct, the cooling exhaust duct comprises a cooling exhaust main pipe portion and a plurality of cooling exhaust branch pipe portions which are all communicated with the cooling exhaust main pipe portion, the cooling exhaust main pipe portion is communicated with the cooling exhaust fan, each cooling exhaust branch pipe portion is communicated with the inner cavity of the jacket, each cooling exhaust branch pipe portion and each air inlet are staggered in the first direction, one end of the cooling exhaust duct is connected with the exhaust main pipe, and the other end of the cooling exhaust duct is connected with the cooling exhaust fan.

5. The kiln as claimed in claim 4, wherein a plurality of cooling exhaust ports are provided at the top end of the jacket and communicate with the inner cavity of the jacket, and each of the cooling exhaust ports communicates with each of the cooling exhaust branch pipe portions in one-to-one correspondence.

6. The kiln of claim 1, wherein the tail exhaust unit further comprises a tail exhaust plenum, the tail exhaust plenum comprising a tail exhaust main pipe portion and a plurality of tail exhaust branch pipe portions each communicating with the tail exhaust main pipe portion, each of the tail exhaust branch pipe portions communicating with the kiln firing section, each of the tail exhaust branch pipe portions being uniformly aligned in a first direction.

7. The kiln as claimed in claim 6, wherein a plurality of tail gas exhaust ports are provided at the top end of the kiln body and are in communication with the kiln roasting section, each of the tail gas exhaust ports being in one-to-one correspondence with each of the tail gas exhaust branch pipe portions.

8. The kiln as claimed in claim 7, wherein a heat-insulating layer is covered on the top of the kiln body, the position of the heat-insulating layer corresponds to the position of the kiln roasting section, and the tail gas exhaust branch pipe part passes through the heat-insulating layer and is connected with the tail gas exhaust port.

9. The kiln of any one of claims 1 to 8, wherein the tail gas exhaust unit further comprises a control module for opening a shut-off valve while the tail gas exhaust fan is activated to enable gas flow into the tail gas exhaust duct, and for closing the shut-off valve while the tail gas exhaust fan is closed.

10. Kiln system, characterized in that it comprises a sagger and a kiln according to any one of claims 1-9, said sagger being arranged in the kiln furnace.

11. The kiln system of claim 10, further comprising an air intake device disposed below the sagger, the air intake device in communication with the kiln firebox.