CN215810032U

CN215810032U - Powder baking system

Info

Publication number: CN215810032U
Application number: CN202122431197.2U
Authority: CN
Inventors: 叶远航; 覃晓明
Original assignee: Foshan Golden Milky Way Intelligent Equipment Co Ltd
Current assignee: Foshan Golden Milky Way Intelligent Equipment Co Ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-02-11
Anticipated expiration: 2031-10-09

Abstract

The application relates to the technical field of drying equipment, in particular to a powder baking system, which comprises powder feeding equipment, a baking kettle and a cooling kettle; the discharge hole of the powder feeding equipment is connected with the feed inlet of the baking kettle through a pipeline; the discharge hole of the baking kettle is connected with the feed hole of the cooling kettle through a pipeline; the outer wall of the baking kettle is provided with a heating jacket; the heating jacket is provided with a heating medium inlet and a heating medium outlet; the baking kettle is provided with an air inlet and an air outlet; a first double-screw belt asymmetric propeller is arranged in the baking kettle; the first double helical asymmetric propeller comprises an outer helical ribbon propeller and an inner helical ribbon propeller which have different diameters. This application has good drying efficiency and stoving effect, has solved effectively and has had the low and poor technical problem of stoving effect of drying efficiency among the prior art.

Description

Powder baking system

Technical Field

The application relates to the technical field of drying equipment, in particular to a powder baking system.

Background

Conventional powder is dried by using a hot air circulation drying oven (hot air circulation drying box), the hot air circulation drying oven adopts a high-temperature-resistant long-shaft circulating fan, forced hot air heated by an electric heating tube or a steam heat exchanger circulates in the box, the whole box body adopts a fully-closed structure, most of hot air circulates in the box, moist hot air is discharged, fresh air is supplemented, and the materials are dried under the action of forced ventilation. The powder material is dried by using the hot air circulation drying oven, the powder material is required to be placed in a baking pan and sent into the hot air circulation drying oven for drying, the dried powder material is taken out for use or storage after the drying is finished, and then new powder material is added for drying. The hot air circulation oven requires more manual operation in use, is inconvenient to use, and can cause dust flying in operation to pollute air, so that operators can inhale dust to cause damage. In the stoving effect, when using heated air circulation oven stoving powder, the powder is static not upset, probably leads to the powder of lower floor to obtain better stoving effect, and drying efficiency is lower moreover, needs the longer time just to enable all powder stoving to reach the requirement, and the back cooling of powder stoving also needs to spend a large amount of time simultaneously, when the big bulk powder drying of demand handles, drying operation is troublesome, and demand drying time is long.

SUMMERY OF THE UTILITY MODEL

In view of this, the present application aims to provide a powder baking system, which effectively solves the technical problems of low drying efficiency and poor drying effect in the prior art.

In order to achieve the purpose, the application provides the following technical scheme:

a powder baking system comprises a powder feeding device, a baking kettle and a cooling kettle;

the discharge hole of the powder feeding equipment is connected with the feed inlet of the baking kettle through a pipeline;

the discharge hole of the baking kettle is connected with the feed hole of the cooling kettle through a pipeline;

the outer wall of the baking kettle is provided with a heating jacket;

the heating jacket is provided with a heating medium inlet and a heating medium outlet;

the baking kettle is provided with an air inlet and an air outlet;

a first double-screw belt asymmetric propeller is arranged in the baking kettle;

the first double helical asymmetric propeller comprises an outer helical ribbon propeller and an inner helical ribbon propeller which have different diameters.

Preferably, in the above-mentioned powder baking system, the air inlet and the air outlet are respectively provided at the bottom and the top of the baking vessel.

Preferably, in the above powder baking system, the air inlet is connected to a nitrogen charging pipe for supplying dry nitrogen gas into the baking kettle.

Preferably, in the above powder baking system, a dust collector is disposed at the air outlet.

Preferably, in one of the above-mentioned powder baking systems, the heating medium inlet and the heating medium outlet are provided at the bottom and the top of the heating jacket, respectively.

Preferably, in the above powder baking system, the outer wall of the cooling kettle is provided with a cooling jacket;

the cooling jacket is provided with a cooling medium inlet and a cooling medium outlet.

Preferably, in one of the above-mentioned powder baking systems, the cooling medium inlet and the cooling medium outlet are provided at the bottom and the top of the cooling jacket, respectively.

Preferably, in the powder baking system, the powder feeding device is provided with a dust removing device.

Preferably, in the above powder baking system, a second double-screw asymmetric propeller is arranged in the cooling kettle;

the second twin-screw asymmetric propeller comprises an outer screw band propeller and an inner screw band propeller which have different diameters.

Preferably, in the above powder baking system, the outer helical ribbon paddle and the inner helical ribbon paddle are specifically an upturning paddle or a pressing paddle.

Compared with the prior art, the beneficial effects of this application are:

the application provides a powder baking system, when the operation, the material is carried to baking the cauldron after from throwing powder equipment, baking the cauldron and pressing from both sides the heating medium that the cover utilizes flow to heat the material in baking the cauldron through the heating of outer wall, and stir through the material of first pair spiral shell area asymmetric screw in to baking the cauldron and turn, make the material can the thermally equivalent, rethread air inlet lets in dry gas, dry gas takes away the steam in the material and toasts the cauldron through the gas vent discharge, thereby reach the stoving effect, the material after the final cooling kettle is dried cools off, obtain the dry material of normal atmospheric temperature. In the stirring process, the diameter of the outer spiral paddle is larger and is used for driving external materials to turn over; interior spiral shell area oar internal diameter is little for drive inside material and turn, adopt the outer spiral shell area oar and the interior spiral shell area oar of diameter difference, be favorable to increasing the fluidic disorderly degree of material in toasting the cauldron, form the turbulent flow, make more abundant of material stirring, not only can improve stirring efficiency, but also can make the interior material of cauldron can fully flow and carry out the heat transfer, good drying efficiency and stoving effect have, have the low and poor technical problem of stoving effect of drying efficiency among the prior art effectively solved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a powder baking system according to an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a baking oven of the powder baking system according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a powder feeding apparatus of a powder baking system according to an embodiment of the present application.

In the figure:

100. powder feeding equipment; 110. a powder feeding port; 120. a dust removal device; 200. baking the kettle; 210. a heating jacket; 211. a heating medium inlet; 212. a heating medium outlet; 220. an air inlet; 221. a nitrogen charging pipe; 230. an exhaust port; 231. a dust remover; 300. cooling the kettle; 310. a cooling jacket; 311. a cooling medium inlet; 312. a cooling medium outlet; 410. a first twin-screw asymmetric propeller; 420. a second twin-screw asymmetric propeller; 431. the outer screw is provided with a paddle; 432. the inner screw is provided with a paddle; 500. a drive assembly.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of 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 embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

Conventional powder is dried by using a hot air circulation drying oven (hot air circulation drying box), the hot air circulation drying oven adopts a high-temperature-resistant long-shaft circulating fan, forced hot air heated by an electric heating tube or a steam heat exchanger circulates in the box, the whole box body adopts a fully-closed structure, most of hot air circulates in the box, moist hot air is discharged, fresh air is supplemented, and the materials are dried under the action of forced ventilation. The powder material is dried by using the hot air circulation drying oven, the powder material is required to be placed in a baking pan and sent into the hot air circulation drying oven for drying, the dried powder material is taken out for use or storage after the drying is finished, and then new powder material is added for drying. The hot air circulation oven requires more manual operation in use, is inconvenient to use, and can cause dust flying in operation to pollute air, so that operators can inhale dust to cause damage. In the stoving effect, when using heated air circulation oven stoving powder, the powder is static not upset, probably leads to the powder of lower floor to obtain better stoving effect, and drying efficiency is lower moreover, needs the longer time just to enable all powder stoving to reach the requirement, and the back cooling of powder stoving also needs to spend a large amount of time simultaneously, when the big bulk powder drying of demand handles, drying operation is troublesome, and demand drying time is long. This embodiment provides a powder baking system, has solved effectively and has had the technical problem that drying efficiency is low and the stoving effect is poor among the prior art.

Referring to fig. 1-3, an embodiment of the present application provides a powder baking system, which includes a powder feeding apparatus 100, a baking kettle 200, and a cooling kettle 300; the discharge hole of the powder feeding device 100 is connected with the feed inlet of the baking kettle 200 through a pipeline; the discharge hole of the baking kettle 200 is connected with the feed hole of the cooling kettle 300 through a pipeline; the outer wall of the baking kettle 200 is provided with a heating jacket 210; the heating jacket 210 is provided with a heating medium inlet 211 and a heating medium outlet 212; the baking kettle 200 is provided with an air inlet 220 and an air outlet 230; a first double-spiral-belt asymmetric propeller 410 is arranged in the baking kettle 200; the first dual band asymmetric propeller 410 includes outer and

inner band propellers

431, 432 of different diameters.

More specifically, the top of the baking kettle 200 is provided with a driving assembly 500, the central axis of the first double-helical-ribbon asymmetric propeller 410 is arranged along the vertical direction, and the driving assembly 500 is connected with the first double-helical-ribbon asymmetric propeller 410 and is used for driving the first double-helical-ribbon asymmetric propeller 410 to rotate; the diameter of the outer screw belt propeller 431 is larger than that of the inner screw belt propeller 432, and the diameter of the outer screw belt propeller 431 is slightly smaller than the inner diameter of the baking kettle 200; the walls of the baking vessel 200 are made of a thermally conductive material so that the fluid medium in the heating jacket 210 can exchange heat with the contents of the baking vessel 200.

This embodiment is when the operation, the material is carried to baking kettle 200 back from throwing powder equipment 100, baking kettle 200 utilizes the material of mobile heating medium to baking kettle 200 through the heating jacket 210 of outer wall to heat, and stir through the material of first pair of spiral shell area asymmetric screw 410 in to baking kettle 200 and turn, make the material can the thermally equivalent, rethread air inlet 220 lets in dry gas, dry gas takes away the steam in the material and discharges baking kettle 200 through gas vent 230, thereby reach the stoving effect, material after last cooling kettle 300 is dried cools off, obtain the dry material of normal atmospheric temperature. In the stirring process, the outer spiral paddle 431 is larger in diameter and is used for driving external materials to turn over; interior spiral shell area oar 432 internal diameter is little for it turns to drive inside material, adopt the different outer spiral shell area oar 431 of diameter and interior spiral shell area oar 432, be favorable to increasing the turbulent degree of the interior material fluid of baking kettle 200, form the turbulent flow, make more abundant of material stirring, not only can improve stirring efficiency, but also can make the interior material of cauldron can fully flow and carry out the heat transfer, good drying efficiency and stoving effect have, the technical problem that has the drying efficiency low and the stoving effect is poor among the prior art has been solved effectively.

Further, in this embodiment, the air inlet 220 and the air outlet 230 are respectively disposed at the bottom and the top of the baking kettle 200, the air inlet 220 and the air outlet 230 disposed in this way can form a gas flow direction from bottom to top in the baking kettle 200, and in the operation of drying the materials in the baking kettle 200, a part of moisture in the materials is heated into water vapor, because the movement trend of the water vapor is upward, when the gas is input through the air inlet 220, the gas can pass through the materials and easily take away the water vapor in the materials, and then the water vapor rises to the air outlet 230 to be discharged to the outside, thereby achieving the drying effect.

Further, in the present embodiment, the gas inlet 220 is connected to a nitrogen filling pipe 221 for supplying dry nitrogen gas into the baking oven 200. Because partial material heating contacts the easy oxidation reaction of air and leads to the material impure, can let in gas through nitrogen filling pipe 221 and take away the steam in the material to baking kettle 200, can utilize the inert characteristic of nitrogen again to avoid the material to be heated to produce chemical reaction, guarantee the purity of the material after the stoving. Meanwhile, the capacity of carrying water vapor by the nitrogen can be effectively increased by drying the nitrogen, so that the water vapor in the material can be more easily taken away by the nitrogen from bottom to top.

More specifically, besides the introduction of nitrogen, other protective gases may also be introduced, and details of this embodiment are not repeated.

Further, in the present embodiment, a dust collector 231 is provided at the exhaust port 230. Because the material is when powder material, the material flows along with gas easily, can prevent through setting up of dust remover 231 on the one hand that the material in the cauldron 200 of toasting floats out of the body, is favorable to reducing the loss of material, and on the other hand can prevent effectively that the dust from discharging to the outside, is favorable to reducing the pollution to the environment.

Further, in the present embodiment, the heating medium inlet 211 and the heating medium outlet 212 are provided at the bottom and the top of the heating jacket 210, respectively. Because the baking kettle 200 is often set to be conical, compared with the material at the top of the baking kettle 200, the material at the bottom of the baking kettle 200 is easier to be heated and dried, and the heating medium outlet 212 is arranged above the heating medium inlet 211, so that the gravity is overcome when the heating medium flows upwards, the time of the heating medium in the heating jacket 210 is prolonged, and the heating medium in the heating jacket 210 can fully exchange heat with the material in the baking kettle 200.

Further, in the present embodiment, the outer wall of the cooling kettle 300 is provided with a cooling jacket 310; the cooling jacket 310 is provided with a cooling medium inlet 311 and a cooling medium outlet 312. Through the arrangement of the cooling jacket 310, not only the external heat dissipation area of the cooling kettle 300 can be effectively increased, but also the heat of the material can be continuously driven by the flowing cooling medium, so that the material can be rapidly cooled to the normal temperature.

Further, in the present embodiment, the cooling medium inlet 311 and the cooling medium outlet 312 are provided at the bottom and the top of the cooling jacket 310, respectively. Because cooling cauldron 300 often sets up to the toper, compare the material at cooling cauldron 300 top, the material of cooling cauldron 300 bottom is cooled off more easily by the cooling, through set up cooling medium export 312 in the top of cooling medium import 311 for the coolant upwards flows and need overcome gravity, is favorable to prolonging the time of cooling medium in cooling jacket 310, makes the cooling medium in cooling jacket 310 can fully exchange the heat with the material in cooling cauldron 300.

Further, in the present embodiment, the powder feeding apparatus 100 is provided with a dust removing device 120. Because when powder material is input into the powder feeding equipment 100 through the powder feeding port 110, dust is easily generated in the powder feeding equipment 100, if the powder conveying speed is too fast, the generated dust easily drifts out from the powder feeding port 110, so that a large amount of dust floats in a workshop to influence the normal operation of workers, the dust generated in the powder feeding process can be taken away through the arrangement of the dust removing device 120, and the situation that the dust drifts everywhere in the workshop is avoided.

Further, in the present embodiment, a second twin-screw asymmetric propeller 420 is disposed in the cooling kettle 300; the second twin screw band asymmetric propeller 420 includes an outer screw band propeller 431 and an inner screw band propeller 432 having different diameters. In the same stirring process, the outer spiral paddle 431 is larger in diameter and is used for driving external materials to turn over; interior spiral shell area oar 432 internal diameter is little for drive inside material and turn, adopt the outer spiral shell area oar 431 and the interior spiral shell area oar 432 that the diameter is different, be favorable to increasing the turbulent degree of material fluid in the cooling kettle 300, form the turbulent flow, make more abundant of material stirring, not only can improve stirring efficiency, but also can make the interior material of cauldron can fully flow and carry out the heat transfer, be favorable to improving cooling efficiency.

More specifically, a driving assembly 500 is disposed on the top of the cooling kettle 300, the central axis of the second twin-screw asymmetric propeller 420 is disposed along the vertical direction, and the driving assembly 500 is connected to the second twin-screw asymmetric propeller 420 for driving the second twin-screw asymmetric propeller 420 to rotate.

Further, in the present embodiment, the outer screw-threaded propeller 431 and the inner screw-threaded propeller 432 are embodied as an upturning propeller or a downturning propeller. In this embodiment, it is preferable that the inner screw belt paddles 432 and the outer screw belt paddles 431 both adopt an upturning paddle, and the materials are turned over in the kettle by stirring and turning in operation, so as to ensure uniform heating of the materials, and it is also possible to use screw belt paddles in different turning directions according to the process requirements, for example, the outer screw belt paddles 431 for turning the materials upward and the inner screw belt paddles 432 for pressing the materials downward.

The beneficial effects of this embodiment:

(1) by using one set of baking system, the powder can be efficiently baked in large batch, complex operation is not needed, and the baking effect is better than that of the traditional hot air circulation baking oven;

(2) the powder feeding equipment 100 is used for feeding powder, a powder feeding area and a working area can be isolated, and meanwhile, the powder feeding equipment 100 with a dust removing function and a special powder feeding room are used, so that the whole working area is effectively prevented from being polluted by dust, the environment is protected, and workers can be ensured to be in proper environment operation;

(3) the dried powder can be cooled more efficiently through the cooling kettle 300, the time for cooling the powder is reduced, and the efficiency is improved;

(4) the powder is dried through the baking kettle 200, the stirring assembly is arranged in the baking kettle, the powder can be turned, the powder is dried uniformly, the drying effect is better, and the efficiency of the powder drying operation is improved.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A powder baking system is characterized by comprising a powder feeding device, a baking kettle and a cooling kettle;

the outer wall of the baking kettle is provided with a heating jacket;

the baking kettle is provided with an air inlet and an air outlet;

2. The powder baking system of claim 1, wherein said air inlet and said air outlet are disposed at the bottom and top of said baking oven, respectively.

3. The powder baking system of claim 2, wherein a nitrogen charging pipe is connected to the air inlet for supplying dry nitrogen gas into the baking oven.

4. The powder baking system of claim 2, wherein a dust collector is disposed at the air outlet.

5. The powder baking system of claim 1, wherein said heating medium inlet and said heating medium outlet are disposed at the bottom and the top of said heating jacket, respectively.

6. The powder baking system of claim 1, wherein the outer wall of the cooling kettle is provided with a cooling jacket;

7. The powder baking system of claim 6, wherein the cooling medium inlet and the cooling medium outlet are disposed at the bottom and the top of the cooling jacket, respectively.

8. The powder baking system of claim 1, wherein the powder feeding device is configured with a dust removing device.

9. The powder baking system of claim 1, wherein a second twin-screw asymmetric propeller is disposed in the cooling kettle;

10. The powder baking system of any one of claims 1 to 9, wherein the outer and inner ribbon paddles are specifically upturned paddles or downturned paddles.