CN209926834U

CN209926834U - Integrated preparation furnace kiln for inorganic powder and products

Info

Publication number: CN209926834U
Application number: CN201920688114.8U
Authority: CN
Inventors: 赵友谊
Original assignee: JINGANG NEW MATERIALS CO Ltd
Current assignee: JINGANG NEW MATERIALS CO Ltd
Priority date: 2019-05-14
Filing date: 2019-05-14
Publication date: 2020-01-10
Anticipated expiration: 2029-05-14

Abstract

The utility model discloses an integration preparation kiln of inorganic powder and goods, this kiln include base, the kiln body, kiln hood cover, kiln hood and burning subassembly, the kiln body on be located kiln hood cover and kiln hood cover between turn right from a left side and seal in proper order and be provided with cover and the blast hood of unloading. The kiln comprises a kiln body and is characterized in that an induced draft port is arranged on the upper side of the kiln head cover, an air inlet is formed in the blast cover, and an air inlet hole is formed in the blast cover on the kiln body. The kiln body is positioned in the discharging cover and is provided with a plurality of discharging holes along the circumferential direction. Meanwhile, the device is combined with the preparation method to simultaneously finish the calcination of the inorganic powder and the sintering of the inorganic product, thereby not only avoiding the energy consumption caused by the use of kiln furniture, but also improving the thermal efficiency and the calcination speed in the calcination process.

Description

Integrated preparation furnace kiln for inorganic powder and products

Technical Field

The utility model relates to the technical field of inorganic non-metallic materials, in particular to an integrated preparation furnace kiln of inorganic powder and products and a preparation method thereof.

Background

In the inorganic powder and product preparation industry, the calcination of the inorganic powder and the sintering of the inorganic product are both independently carried out. The inorganic powder is calcined in rotary kiln, and the inorganic product is sintered in pushed slab kiln, tunnel kiln or roller kiln. When the inorganic product is sintered by adopting a pushed slab kiln, a tunnel kiln and a roller kiln, the prepared inorganic product green body is placed in a special sagger or directly placed on a pushed slab of the pushed slab kiln or a roller bed cushion plate of the roller kiln or a kiln car of the tunnel kiln, and then is sent into the kiln to be sintered according to the sintering process of the inorganic product. In the process, kiln furniture such as saggars, push plates, backing plates and kiln cars absorb a large amount of heat, the firing time of the products is prolonged, the energy consumption in the firing process of the inorganic products is increased, and the fired inorganic products can be taken out from the saggars or other kiln furniture after being cooled, so that the automation of the firing process is not easy to realize, the production period is long, the production efficiency is low, the working environment of workers is severe, the labor intensity is high, and great potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

In view of the above problems, the present invention provides an integrated preparation kiln for inorganic powder and products, which can simultaneously accomplish the calcination of inorganic powder and the sintering of inorganic products, and not only can not generate the energy consumption caused by the use of kiln furniture, but also can improve the thermal efficiency and the firing speed of the firing process.

And simultaneously, the utility model also provides an integration preparation method of inorganic powder and goods, this method fuses mutually through the calcination with inorganic powder and the sintering of inorganic products, has not only improved production efficiency, and inorganic powder can wrap up inorganic products effectively at the in-process of sintering moreover, increases inorganic products's directly receives the hot area, makes the sintering more abundant, has improved the efficiency of sintering, meanwhile has still reduced energy consumption.

The utility model provides a technical scheme that its technical problem adopted is:

an integrated preparation furnace kiln for inorganic powder and products comprises a base, a kiln body, a kiln head cover, a kiln tail cover and a combustion assembly, wherein a driving device for driving the kiln body to rotate is arranged between the base and the kiln body;

an induced draft port is arranged on the upper side of the kiln head cover, an air inlet is arranged on the blast cover, and an air inlet hole is arranged in the blast cover on the kiln body;

the kiln body is positioned in the discharging cover and is provided with a plurality of discharging holes along the circumferential direction.

Furthermore, the combustion assembly comprises a combustor arranged on the kiln tail cover, a lengthened connecting pipe is arranged on a nozzle of the combustor, and a suspended end of the lengthened connecting pipe penetrates through the blast cover.

Further, the combustion assembly comprises a fuel supply pipe consisting of a supply section, a connecting section and a rotating section, the supply section is fixedly arranged on the outer side wall of the kiln body between the kiln head cover and the discharging cover, the rotating section is coaxially arranged with the kiln body and is connected with a fuel supply source through a rotary joint, the supply section is communicated with the rotating section through the connecting section, a plurality of groups of combustors are arranged on the outer side wall of the kiln body between the kiln head cover and the discharging cover, and fuel inlets of the combustors are connected with the supply section through branch pipes.

Further, the burner comprises a burner, a fuel inlet of the burner is connected with the supply section of the fuel supply pipe through a branch pipe, and an air inlet of the burner is connected with the second air blower.

Furthermore, the burner block arranged on the side wall of the kiln body is higher than the inner side wall of the kiln body.

Furthermore, the left end of the rotating section passes through the kiln head cover and then is connected with a fuel supply source through a rotary joint.

Furthermore, the blanking holes are distributed in a certain width area of the kiln body along the axial direction.

Further, a material guide hopper is arranged at the upper end of the first discharge opening.

An integrated preparation method of inorganic powder and products comprises the following steps,

firstly, preparing a blank of an inorganic product by batching, pulverizing, molding and drying;

secondly, adding raw material powder of inorganic powder and the blank of the inorganic product prepared in the first step into the kiln body according to a certain proportion;

thirdly, starting the furnace;

fourthly, continuously adding raw material powder of inorganic powder and the blank of the inorganic product into the feed hopper according to a certain proportion.

The utility model has the advantages that:

first, as far as the device is concerned

1. The preparation device can simultaneously finish the calcination of inorganic powder and the sintering of inorganic products, realize the synchronous production of the inorganic powder and the inorganic products in the same kiln, and effectively improve the production efficiency.

2. Aiming at the sintering of inorganic products, the traditional sintering mode of adopting a pushed slab kiln, a tunnel kiln and a roller kiln is changed, and kiln furniture such as saggars, backing plates, pushed slabs and kiln cars are not needed in the sintering process, so that energy consumption caused by the use of the kiln furniture is avoided, and the thermal efficiency and the sintering speed in the sintering process are improved.

3. The kiln body is provided with the blast hood, and the inorganic product sintered by primary cooling can be directly discharged from the second discharge port, so that the mechanical and automatic operation can be easily realized from the material entering the kiln to the finished product sintering leaving the kiln, the problem that the mechanical and automatic operation is not easily realized when the inorganic product is sintered by using a push plate kiln, a tunnel kiln and a roller kiln is solved, and the mechanization and automation level of the sintering process is effectively improved.

Secondly, in terms of the preparation method

1. The method integrates the processing steps by fusing the calcination of the inorganic powder and the sintering of the inorganic product, thereby effectively improving the production efficiency.

2. The method combines the calcination of the inorganic powder and the sintering of the inorganic product, so that the inorganic powder can effectively wrap the inorganic product in the sintering process, the direct heat receiving area of the inorganic product is increased, the sintering is more sufficient, and the sintering efficiency is improved.

3. The method combines the calcination of the inorganic powder and the sintering of the inorganic product, the inorganic powder can play a role of buffering in the sintering process, the inorganic product is prevented from being broken and damaged due to mutual collision in the sintering process, and the sintering of the inorganic product in a swinging kiln and a rotary kiln is realized.

4. The method combines the calcination of the inorganic powder and the sintering of the inorganic product, and the inorganic powder and the inorganic product are matched and interacted with each other in the sintering process, so that the method has a good gain effect.

Drawings

FIG. 1 is a front view of a manufacturing apparatus;

FIG. 2 is a schematic view showing an internal structure of a manufacturing apparatus;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

FIG. 4 is a schematic view showing the overall arrangement of a combustion assembly in the second embodiment;

FIG. 5 is an enlarged schematic view of portion B of FIG. 4;

FIG. 6 is an enlarged schematic view of a portion C of FIG. 4;

FIG. 7 is a sectional view taken along line A-A of FIG. 4;

FIG. 8 is an enlarged view of the portion D in FIG. 7

FIG. 9 is a schematic view showing the arrangement of the combustion supply pipe in the second embodiment;

FIG. 10 is a schematic flow chart of an integrated preparation method of inorganic powder and a product.

In the figure: 1-kiln body, 11-wheel belt, 12-blanking hole, 13-air inlet hole, 2-base, 21-riding wheel, 31-motor, 32-speed reducer, 33-driving wheel, 34-driven wheel, 4-kiln head cover, 41-feed hopper, 42-guide chute, 43-induced draft opening, 5-discharge cover, 51-first discharge opening, 52-guide hopper, 6-blast cover, 61-air inlet, 7-kiln tail cover, 71-second discharge opening, 81-burner, 82-lengthened connecting pipe, 91-burner, 92-branch pipe, 93-second blower, 94-valve, 951-supply section, 952-connecting section, 953-rotation section and 96-rotary joint.

Detailed Description

Example one

As shown in figure 1, the integrated preparation furnace kiln for inorganic powder and products comprises a base 2 and a kiln body 1 which is rotatably connected with the base 2, wherein a driving device for driving the kiln body 1 to rotate is arranged between the base 2 and the kiln body 1. The kiln body 1 is obliquely arranged in a mode of being high at the left and low at the right, or is horizontally arranged, and the material is axially conveyed by utilizing the conveying plate in the kiln body. Preferably, when the kiln body is obliquely arranged, the included angle between the axis of the kiln body 1 and the horizontal plane is 2-8 degrees.

As a specific embodiment, as shown in fig. 1, at least two belt pulleys 11 are arranged on the kiln body 1, two support wheels 21 for supporting the kiln body 1 are symmetrically arranged on the base 2 below each belt pulley 11, and the belt pulleys 11 are pressed on the support wheels 21. The driving device comprises a motor 31, a speed reducer 32, a driving wheel 33 and a driven wheel 34. An output shaft of the speed reducer 32 is connected with the driving wheel 33, and a driven wheel 34 meshed with the driving wheel 33 is arranged on the kiln body 1.

As shown in fig. 1, a kiln head hood 4, a discharging hood 5, a blast hood 6 and a kiln tail hood 7 are sequentially arranged on a kiln body 1 from left to right, and the kiln head hood 4, the discharging hood 5, the blast hood 6 and the kiln tail hood 7 are respectively in sealing connection with the kiln body 1. The kiln head hood 4, the discharging hood 5, the blast hood 6, the kiln tail hood 7 and the kiln body 1 form a closed space together.

In the traditional rotary kiln, a sealed connecting structure exists between the kiln head cover 4, the kiln tail cover 7 and the kiln body 1. Therefore, the sealing structures between the discharge hood 5, the blast hood 6 and the kiln body 1 can be realized by adopting the traditional sealing mechanisms between the kiln head hood 4, the kiln tail hood 7 and the kiln body 1, which belongs to the prior art and is not described herein again.

The outer side surface of the kiln head cover 4 is provided with a feed hopper 41, the feed hopper 41 is provided with a guide chute 42, the guide chute 42 is arranged in a downward inclined manner, and the guide chute 42 extends into the kiln body 1.

And an induced draft port 43 is arranged on the upper side of the kiln head cover 4, and the induced draft port 43 is connected with an induced draft fan through a pipeline. The air blowing cover 6 is provided with an air inlet 61, and the air inlet 61 is connected with a first air blower through a pipeline. As shown in fig. 2, an air inlet 13 is arranged in the blast hood 6 on the kiln body 1. Preferably, the number of the air inlet holes 13 is multiple, and the air inlet holes are uniformly distributed along the circumferential direction.

This is mainly due to two considerations: firstly, the induced draft fan is used for inducing air through the induced draft opening 43 during operation, the air blower is used for blowing air through the air inlet 61, the airflow in the kiln flows axially from right to left along the axis of the kiln body 1, and the flow of the airflow is matched with the burner 81 to realize the control of a temperature field in the kiln. Secondly, when the sintered inorganic product enters the cooling area surrounded by the blast hood 6 from the sintering area of the kiln body 1, the inorganic product can be uniformly cooled by blowing cold air into the kiln body 1. The preliminarily cooled inorganic product continues to move rightward along the axis of the kiln body 1 and is finally discharged through the second discharge port 71 of the kiln tail cover 7. Is beneficial to realizing mechanized and automatic operation.

As shown in fig. 1 and 2, a first discharge opening 51 is formed in the discharge cover 5, a plurality of blanking holes 12 are formed in the kiln body 1 and located in the discharge cover 5, and the plurality of blanking holes 12 are uniformly distributed along the circumferential direction.

Thus, when the calcined inorganic powder and the sintered inorganic product pass through the kiln body 1 surrounded by the discharge cover 5, the inorganic powder enters the discharge cover 5 through the blanking holes 12 on the kiln body wall and is finally discharged through the first discharge opening 51 at the lower end of the discharge cover 5, and the sintered inorganic product continues to move rightward along the axis of the kiln body 1.

Further, in order to completely discharge the calcined inorganic powder from the kiln body 1 and avoid mixing the inorganic powder in the finally obtained inorganic product, as shown in fig. 2, a plurality of rows of blanking holes 12 are axially arranged on the kiln body 1 in the discharging cover 5. As a specific implementation mode, 3 rows of blanking holes 12 are axially arranged on the kiln body 1 in the discharging cover 5 in the embodiment.

Here, the blanking holes 12 may not be arranged separately, and may be arranged irregularly, as long as they are distributed in a certain width area of the kiln body 1 along the axial direction. Preferably, the width of the distribution area is 300-400 mm.

Further, in order to facilitate the discharge of the inorganic powder from the first discharge opening 51, as shown in fig. 3, a material guide hopper 52 is disposed at an upper end of the first discharge opening 51.

As shown in fig. 1 and fig. 2, the combustion assembly includes a burner 81 disposed on the kiln tail cover 7, and an elongated adapter 82 is fixedly disposed on a nozzle of the burner 81, and a free end of the elongated adapter 82 passes through the blast cover 6, as a specific embodiment, the free end of the elongated adapter 82 in this embodiment extends into the discharge cover 5.

Example two

As shown in fig. 4, the combustion assembly includes a fuel supply pipe provided on the kiln body 1, and as shown in fig. 6, 7 and 9, the fuel supply pipe includes a supply section 951, a connection section 952 and a rotation section 953. Wherein the feeding section 951 is fixedly arranged on the outer side wall of the kiln body 1 between the kiln head cover 4 and the discharging cover 5, and the belt 11 and the driven wheel 34 are both provided with through holes for allowing the feeding section 951 to pass through. The rotating section 953 is arranged in the kiln head cover 4 and is coaxial with the kiln body 1. The left end of the turning section 953 passes through the kiln head cover 4 and is connected with a fuel supply source through a rotary joint 96. The connecting section 952 is arranged inside the kiln body 1 and positioned on the right side of the material guide groove 42, one end of the connecting section 952 is connected with the end part of the rotating section 953, and the other end of the connecting section 952 penetrates through the side wall of the kiln body 1 and then is connected with the end part of the feeding section 951. Preferably, the connecting segments 952 are radially disposed.

The construction of the swivel joint 96 is described herein as being conventional and will not be described further herein.

As shown in fig. 4, a plurality of sets of burners are axially disposed on the outer side wall of the kiln body 1 between the kiln head cover 4 and the discharge cover 5, and as a specific implementation, four sets of burners are disposed on the outer side wall of the kiln body 1 in this embodiment. The fuel inlets of the burners are connected to the feed sections 951 of the fuel feed pipes, respectively, by branch pipes 92. The nozzle of the burner extends to the inside of the kiln body 1 through the side wall of the kiln body 1.

Here, the branch pipe 92 may be a hose or a hard pipe.

As shown in fig. 5 and 8, the burner includes a burner 91 fixedly disposed on the kiln body 1, a fuel inlet of the burner 91 is connected to a supply section 951 of the fuel supply pipe through a branch pipe 92, and a valve 94 for controlling a fuel flow is disposed on the branch pipe 92. The air inlet of the burner 91 is connected to a second blower 93.

The burner described herein may also be an integrated burner. However, as a preferred embodiment, the burner described in this embodiment is of a combined structure, mainly because the burner rotates with the kiln body 1 during operation, so that the smaller the volume of the burner, the better. If the integrated burner is adopted, the turning radius is large, and the sizes of other parts need to be adjusted adaptively according to the size of the burner, for example, the height of the base 2 is increased, and the structural size of the whole equipment is increased.

Further, in order to avoid the inorganic powder or inorganic product in the kiln body 1 from blocking the burner 91 during operation and ensure the normal operation of the burner, as shown in fig. 8, the burner block arranged on the side wall of the kiln body 1 is higher than the inner side wall of the kiln body 1. The burner block and the mounting structure thereof described herein belong to the prior art, and have application in conventional kilns, and are not described herein again.

The rest of the structure is the same as the first embodiment.

EXAMPLE III

The rotating section 953 is arranged in the kiln tail cover 7 and is coaxially arranged with the kiln body 1, the right end of the rotating section 953 penetrates through the kiln tail cover 7 and is connected with a fuel supply source through a rotary joint 96, and the rest of the structure is the same as that of the second embodiment.

An integrated preparation method of inorganic powder and products is shown in fig. 10, and comprises the following steps:

firstly, preparing a blank of an inorganic product by batching, pulverizing, molding and drying.

Secondly, adding raw material powder of inorganic powder and the blank of the inorganic product prepared in the first step into the kiln body 1 according to a certain proportion.

Here, the raw material powder of the inorganic powder and the green body ratio of the inorganic product differ depending on the kind of the inorganic product.

Thirdly, the kiln is started.

Fourthly, the raw powder of the inorganic powder and the green body of the inorganic product are continuously added into the feed hopper 41 according to a certain proportion.

In this case, the raw material powder of the inorganic powder is not only a raw material necessary for firing the inorganic powder but also a buffer and a lubricant between the inorganic products and the kiln body 1.

Claims

1. The utility model provides an integration preparation kiln of inorganic powder and goods, includes base, the kiln body, kiln hood cover, kiln hood and combustion assembly, base and the kiln body between be provided with and be used for driving kiln body pivoted drive arrangement, the kiln hood cover and be provided with the feeder hopper baffle box, the kiln hood cover on be provided with second discharge opening, its characterized in that: the kiln body is provided with a discharging cover and a blast cover which are sequentially sealed from left to right between the kiln head cover and the kiln tail cover;

2. The integrated preparation furnace of inorganic powder and products according to claim 1, characterized in that: the combustion assembly comprises a combustor arranged on the kiln tail cover, a nozzle of the combustor is provided with a lengthened connecting pipe, and the lengthened connecting pipe penetrates through the blast cover.

3. The integrated preparation furnace of inorganic powder and products according to claim 1, characterized in that: the combustion assembly comprises a fuel supply pipe consisting of a supply section, a connecting section and a rotating section, wherein the supply section is fixedly arranged on the outer side wall of a kiln body between a kiln head cover and an unloading cover, the rotating section is coaxially arranged with the kiln body and is connected with a fuel supply source through a rotary joint, the supply section is communicated with the rotating section through the connecting section, a plurality of groups of combustors are arranged on the outer side wall of the kiln body between the kiln head cover and the unloading cover, and fuel inlets of the combustors are connected with the supply section through branch pipes.

4. The integrated preparation furnace of inorganic powder and products according to claim 3, characterized in that: the combustor comprises a burner, a fuel inlet of the burner is connected with a supply section of a fuel supply pipe through a branch pipe, and an air inlet of the burner is connected with a second air blower.

5. The integrated preparation furnace of inorganic powder and products according to claim 4, characterized in that: and the burner block arranged on the side wall of the kiln body is higher than the inner side wall of the kiln body.

6. The integrated preparation furnace of inorganic powder and products according to claim 3, characterized in that: the left end of the rotating section passes through the kiln head cover and then is connected with a fuel supply source through a rotary joint.

7. The integrated preparation furnace of inorganic powder and products according to claim 1, characterized in that: the blanking holes are distributed in a certain width area of the kiln body along the axial direction.

8. The integrated preparation furnace of inorganic powder and products according to claim 1, characterized in that: and a material guide hopper is arranged at the upper end of the first discharge opening.