CN210718681U

CN210718681U - Kiln ash discharge and recovery device in low-alkali cement production process

Info

Publication number: CN210718681U
Application number: CN201921225668.0U
Authority: CN
Inventors: 潘凤祎; 刘振河; 杨海峰; 李红江; 李宗光
Original assignee: Dengfeng Zhonglian Dengdian Cement Co ltd
Current assignee: Dengfeng Zhonglian Dengdian Cement Co ltd
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-06-09
Anticipated expiration: 2029-07-31

Abstract

The utility model discloses a kiln dust discharge recovery device in low alkali cement production process, through setting up a conveyer, No. two conveyers and screw conveyer, can carry the kiln dust to No. two conveyers through a conveyer, realize tentatively moving up, then carry the kiln dust again to the screw conveyer through No. two conveyers again, then upwards move the kiln dust along the outside of kiln body through the screw conveyer, and then can heat the water in the kiln body through the waste heat of kiln dust, and then make the temperature rise, then transmit the heat of water to the kiln chamber, thereby can carry out the preliminary heating to the kiln intracavity portion, reach the effect of preheating; meanwhile, the arrangement of the first conveyor, the second conveyor and the spiral conveyor can discharge kiln dust to the top end of the kiln, and then the kiln dust is conveyed to the recycling box to be recycled, so that the subsequent continuous use is facilitated.

Description

Kiln ash discharge and recovery device in low-alkali cement production process

Technical Field

The utility model relates to a kiln dust discharges recovery unit, specifically is a kiln dust discharges recovery unit in the low alkali cement production process.

Background

In some areas where cement is mostly alkaline and located at seaside, when concrete is poured, sand and stone are mostly collected from seaside, so cracks often appear on the poured concrete building. Low alkali cements can solve this problem. The low alkali cement can be produced by a simple method of mixing 30 to 60% of blast furnace slag into a cement raw material. This cement has an extremely low alkali content as compared with ordinary cement, and therefore, has received attention from the cement industry, the construction industry and other sectors. Meanwhile, a way is found for blast furnace slag.

In the production process of the low-alkali cement, the burning time is long, the amount of the produced kiln dust is large, so that the kiln dust needs to be discharged periodically, and the phenomenon that the use of a kiln is easily influenced due to excessive kiln dust in the kiln is avoided. At present, what most adopted the mode of kiln ash is artificial mode, and is not only inefficiency, simultaneously, still makes workman's health scald because of high temperature easily, and in addition, traditional kiln ash is collecting the back, does not have recycle again, and has a large amount of heats in the kiln ash, leads to thermal waste. In this regard, improvements are needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a kiln ash discharges recovery unit in low alkali cement production process to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a kiln dust discharge and recovery device in the production process of low-alkali cement comprises a kiln body and a recovery box, wherein the kiln body comprises a kiln cavity and a preheating layer arranged on the periphery of the kiln cavity, a material conveying layer is arranged on the outer side of the preheating layer, a plurality of heat conduction pipes are arranged between the material conveying layer and the preheating layer, a spiral conveyor is arranged in the material conveying layer, and a heat insulation layer is arranged on the outer side of the material conveying layer; the kiln ash groove of the bottom in kiln chamber connects the feed inlet of a conveyer, the feed inlet of No. two conveyers is connected to the discharge gate of a conveyer, the discharge gate setting of No. two conveyers is in the top of screw conveyer's feed inlet, the one end that screw conveyer is located the top is formed with the bulge angle, and the feed inlet of collection box is connected through the baffle box in the below of this bulge angle.

As a further aspect of the present invention: the first conveyor and the second conveyor are both arranged in an upward inclined mode, motors are mounted at one ends of the first conveyor and the second conveyor, middle shafts and spiral conveying blades are arranged inside the first conveyor and the second conveyor, an output shaft of each motor is connected with one end of each middle shaft through a coupling, and the spiral conveying blades are fixed on the outer sides of the middle shafts.

As a further aspect of the present invention: the preheating layer is filled with full water, a water inlet and a water outlet are formed in the top end and the bottom end of the preheating layer respectively, the water inlet is connected with a water tank through a water pipe, and a water pump is installed in the water tank.

As a further aspect of the present invention: the heat preservation layer is a rock wool slab layer.

As a further aspect of the present invention: one side of the bottom end of the recycling box is provided with an ash discharge port, and the ash discharge port is externally connected with a movable cover through a hinge.

Compared with the prior art, the beneficial effects of the utility model are that:

by arranging the first conveyor, the second conveyor and the screw conveyor, kiln dust can be conveyed to the second conveyor through the first conveyor to realize preliminary upward movement, then the kiln dust is conveyed into the screw conveyor through the second conveyor again, and then the kiln dust is moved upwards along the outer side of the kiln body through the screw conveyor, so that water in the kiln body can be heated through waste heat of the kiln dust, the water temperature is raised, and the heat of the water is transferred into the kiln cavity, so that the interior of the kiln cavity can be preliminarily heated, and the preheating effect is achieved; simultaneously, this a conveyer, No. two conveyers and screw conveyer's setting can discharge the top of kiln with the kiln ash, then is retrieved in being carried the collection box again to convenient follow-up continuation is used, and in addition, when the kiln ash was carried in the collection box, the heat of kiln ash reduced, can not cause harm to the staff, and then can not scald the staff.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the structure of the present invention.

Fig. 3 is a structural diagram of the first conveyor of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, in the embodiment of the present invention, a kiln dust discharge and recovery device in a low alkali cement production process includes a kiln body 1 and a recovery box 5, wherein the kiln body 1 includes a kiln cavity 6 and a preheating layer 7 arranged at the periphery of the kiln cavity 6, a material conveying layer 8 is arranged at the outer side of the preheating layer 7, a plurality of heat conduction pipes 13 are arranged between the material conveying layer 8 and the preheating layer 7, a screw conveyor 4 is arranged in the material conveying layer 8, and a heat preservation layer 9 is arranged at the outer side of the material conveying layer 8; the feed inlet of conveyer 2 is connected to the kiln ash groove of the bottom in kiln chamber 6, and the feed inlet of No. two conveyer 3 is connected to the discharge gate of conveyer 2, and the discharge gate setting of No. two conveyer 3 is in the top of screw conveyer 4's feed inlet, and the one end that screw conveyer 4 is located the top is formed with the bulge angle, and the feed inlet of collection box 5 is connected through the baffle box in the below of this bulge angle.

The first conveyor 2 and the second conveyor 3 are both arranged in an upward inclined manner, one ends of the first conveyor 2 and the second conveyor 3 are both provided with a motor 10, the interiors of the first conveyor 2 and the second conveyor 3 are both provided with a central shaft 11 and a spiral conveying blade 12, an output shaft of the motor 10 is connected with one end of the central shaft 11 through a coupling, and the outer side of the central shaft 11 is both fixed with the spiral conveying blade 12; kiln ash enters into the feed inlet of conveyor 2, then the work of motor 10 of conveyor 2, it rotates to drive axis 11, and then make axis 11 rotate and drive the helical conveying blade 12 rotation in its outside, and then make helical conveying blade 12 carry kiln ash to discharge gate department, then enter into No. two conveyors 3 through the discharge gate again, then the work of motor 10 of No. two conveyors 3, it rotates with axis 11 and helical conveying blade 12 that is connected with it to drive, thereby drive the inside kiln ash of No. two conveyors 3 and remove to discharge gate department, make kiln ash get into the feed end of helical conveying machine 4 through the discharge gate of No. two conveyors 3.

The preheating layer 7 is filled with full water, a water inlet and a water outlet are respectively formed at the top end and the bottom end of the preheating layer 7, the water inlet is connected with a water tank through a water pipe, and a water pump is installed in the water tank; the water pump works, and water in the water tank is conveyed to the preheating layer 7 through the water pipe, so that the water can be conveniently and subsequently heated.

The heat insulation layer 9 is a rock wool slab layer; can play a role in heat preservation.

One side of the bottom end of the recycling box 5 is provided with an ash discharge port, and the ash discharge port is externally connected with a movable cover through a hinge; the movable cover is convenient to open, so that kiln dust in the recovery box 5 is discharged through the dust discharge port, and subsequent recycling is convenient.

The working principle is as follows: kiln dust enters a feeding hole of a first conveyor 2, then a motor 10 of the first conveyor 2 works to drive a center shaft 11 to rotate, further the center shaft 11 rotates to drive a spiral conveying blade 12 on the outer side of the center shaft to rotate, further the spiral conveying blade 12 conveys the kiln dust to a discharging hole, then the kiln dust enters a second conveyor 3 through the discharging hole, then the motor 10 of the second conveyor 3 works to drive the center shaft 11 and the spiral conveying blade 12 connected with the center shaft to rotate, so that the kiln dust inside the second conveyor 3 is driven to move towards the discharging hole, the kiln dust enters a feeding end of the spiral conveyor 4 through the discharging hole of the second conveyor 3, then a driving motor of the spiral conveyor 4 works to drive the spiral conveyor 4 to work, so that the kiln dust is conveyed to the top end at the bottom end, when the kiln dust is conveyed in a conveying layer 8, the heat of the kiln dust is conveyed to a preheating layer 7 by a heat conduction pipe 13, thereby heat water, when the temperature improves, can reach the effect of preheating to the inside preliminary heating that carries on of kiln chamber 6, when the kiln ash is carried screw conveyer 4's top, can enter into collection box 5 through the baffle box again, play the effect of retrieving, convenient follow-up recycle.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a recovery unit is discharged to kiln ash in low alkali cement production process, includes kiln body (1) and collection box (5), its characterized in that: the kiln comprises a kiln body (1) and a kiln cover (6), wherein the kiln body comprises a kiln cavity (6) and a preheating layer (7) arranged on the periphery of the kiln cavity (6), a material conveying layer (8) is arranged on the outer side of the preheating layer (7), a plurality of heat conduction pipes (13) are arranged between the material conveying layer (8) and the preheating layer (7), a spiral conveyor (4) is arranged in the material conveying layer (8), and a heat insulation layer (9) is arranged on the outer side of the material conveying layer (8); the kiln dust groove of the bottom of kiln chamber (6) connects the feed inlet of a conveyer (2), the feed inlet of No. two conveyer (3) is connected to the discharge gate of a conveyer (2), the discharge gate setting of No. two conveyer (3) is in the top of the feed inlet of screw conveyer (4), the one end that screw conveyer (4) are located the top is formed with the protrusion angle, and the feed inlet of collection box (5) is connected through the baffle box in the below of this protrusion angle.

2. The kiln dust discharge and recovery device in the low alkali cement production process according to claim 1, characterized in that: no. one conveyer (2) and No. two conveyer (3) are the tilt up setting, motor (10) are all installed to the one end of No. one conveyer (2) and No. two conveyer (3), the inside of No. one conveyer (2) and No. two conveyer (3) all is provided with axis (11) and helical conveying blade (12), the output shaft of motor (10) passes through the one end of coupling joint axis (11), the outside of axis (11) all is fixed with helical conveying blade (12).

3. The kiln dust discharge and recovery device in the low alkali cement production process according to claim 1, characterized in that: the preheating layer (7) is filled with full water, a water inlet and a water outlet are formed in the top end and the bottom end of the preheating layer (7) respectively, the water inlet is connected with a water tank through a water pipe, and a water pump is installed in the water tank.

4. The kiln dust discharge and recovery device in the low alkali cement production process according to claim 1, characterized in that: the heat-insulating layer (9) is a rock wool slab layer.

5. The kiln dust discharge and recovery device in the low alkali cement production process according to claim 1, characterized in that: one side of the bottom end of the recycling box (5) is provided with an ash discharge port, and a movable cover is connected outside the ash discharge port through a hinge.