CN216132172U

CN216132172U - Equipment for drying carbide slag by using calcium oxide

Info

Publication number: CN216132172U
Application number: CN202121864795.2U
Authority: CN
Inventors: 刘茂利
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-03-25
Anticipated expiration: 2031-08-11

Abstract

The utility model relates to a device for drying carbide slag by calcium oxide, which comprises a storage bin, a drying tube, a vacuum pump and a conveying device, wherein the drying tube is L-shaped, the storage bin is positioned above the vertical part of the drying tube and is communicated with the upper end of the vertical part of the drying tube, the lower surface of the horizontal part of the drying tube is provided with a discharge hole, and the discharge hole is arranged at the end part far away from the storage bin.

Description

Equipment for drying carbide slag by using calcium oxide

Technical Field

The utility model belongs to the technical field of comprehensive recovery of chemical byproduct resources, and particularly relates to equipment for drying carbide slag by using calcium oxide.

Background

The carbide slag is the slag which takes Ca (OH)2 calcium hydroxide as the main component after acetylene gas is obtained by hydrolyzing carbide. After the carbide slag is dehydrated for one time, the water content of the carbide slag is still higher than 40 percent. The carbide slag can be used as a substitute of slaked lime, is widely applied to buildings, chemical industry, metallurgy, agriculture and the like, and the demand of wet desulphurization or dry desulphurization technology adopted in the field of thermal power on the carbide slag is increased year by year. When the carbide slag contains a large amount of moisture, the carbide slag is thick slurry, is difficult to store and transport and is easy to leak and pollute; the landfill or stockpiling treatment is easy to pollute the earth surface and underground water system, thereby destroying the surrounding ecological environment. Therefore, the key point of the comprehensive utilization of the calcium carbide waste slag is that the water content of the calcium carbide waste slag is reduced, and new impurities are not brought in the recycling process. The carbide slag is efficiently utilized, so that not only can good social, economic and environmental benefits be brought, but also the waste can be changed into valuable.

In the prior art, the device for reducing the moisture in the carbide slag generally utilizes an external heating type roller to dry the carbide slag, the external heating is used for drying the carbide slag, the drying cost is high, the drying process is long, other devices are required to be matched for drying in the external heating mode, and the overall drying efficiency is low. Therefore, the market needs a new drying device with the characteristics of short drying process, low drying cost, high drying efficiency, no new other components, and the like.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a device for drying carbide slag by using calcium oxide, which is used for solving the problems that the drying process is long, the drying cost is high, other devices are required to be matched for drying when external heating is performed, and the overall drying efficiency is low in the prior art.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the equipment for drying the carbide slag by using the calcium oxide is provided, comprises a storage bin 1 and a drying pipe 2, and is characterized in that: still include vacuum pump 3 and conveyor, drying tube 2 be L shape, feed bin 1 be located the top at 2 vertical positions of drying tube, and with the upper end intercommunication at 2 vertical positions of drying tube, the lower surface at 2 horizontal positions of drying tube be equipped with discharge gate 6, discharge gate 6 locate the tip of keeping away from

feed bin

1, 2 upper surfaces of drying tube upwards protruding formation cross-sections be the portion of breathing in 13 of isosceles trapezoid shape, vacuum pump 3 sealed upper end center department of locating portion of breathing in 13, the conveyor level locate the horizontal position of drying tube 2 bottom in, the vertical position of drying tube 2 be equipped with feed valve 10.

Further, conveyor be screw conveyor, screw conveyor include hob 4 and motor 5, hob 4 rotatable locate the interior bottom of the horizontal position of drying tube 2, motor 5 locate the horizontal position of drying tube 2 and be close to the outer tip of feed bin 1, hob 4 the tip that is close to motor 5 rotate and connect on motor 5.

Further, the screw rod 4 of the screw conveying mechanism is a single screw rod or a double screw rod.

Further, drying tube 2 be equipped with bearing 9 in the tip inboard that is close to discharge gate 6, bearing 9 quantity and hob 4 correspond, hob 4 keep away from the tip of feed bin 1 and rotate to cup joint in corresponding bearing 9.

Further, the device also comprises a discharge valve 11, wherein the discharge valve 11 is arranged at the discharge hole 6.

Further, the outer surfaces of the storage bin 1 and the drying tube 2 are both provided with a heat-insulating layer 12, the outer layer of the heat-insulating layer 12 is an aluminum skin 14, and the middle of the heat-insulating layer 12 is heat-insulating cotton 15. Compared with the prior art, the utility model has the following beneficial effects:

(1) the calcium oxide and carbide slag are mixed and then enter the drying pipe from the storage bin, the mixed material is moved through the conveying device, air is sucked through the vacuum pump, negative pressure evaporation is formed in the drying pipe, the evaporation speed is high, the carbide slag in the drying pipe is gradually dried and moved to the discharge port to be discharged, the structure is simple, the drying cost is low, and the drying process is short.

(2) The conveying mechanism in the calcium oxide carbide slag drying equipment provided by the utility model uses the spiral conveying mechanism, the spiral rod is driven to rotate by the rotation of the motor, the rotation of the spiral rod not only can stir the mixture to ensure that the mixture is fully dried in a negative pressure environment, but also can continuously push the mixture to the discharge hole, so that the whole drying process is continuous and uninterrupted, and the heat-insulating layer is arranged in the calcium oxide carbide slag drying equipment provided by the utility model, so that the temperature in the drying pipe can be ensured not to be continuously reduced, the evaporation speed is increased, and the calcium oxide carbide slag drying equipment is high in drying efficiency and good in drying quality.

Drawings

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

Fig. 1 is a block diagram of an apparatus for drying carbide slag using calcium oxide according to the present invention.

Fig. 2 is a plan view of the inner bottom of the drying tube when the screw conveyor is a double screw.

The device comprises a storage bin 1, a drying pipe 2, a vacuum pump 3, a screw rod 4, a motor 5, a discharge port 6, a first gear 7, a second gear 8, a bearing 9, a feed valve 10, a discharge valve 11, a heat-insulating layer 12, an air suction part 13, an aluminum skin 14 and heat-insulating cotton 15.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings, but the scope of the present invention is not limited by the present embodiment, wherein the mixture mentioned in the present specification is a mixture of calcium oxide and carbide slag, and the present specification is referred to as mixture.

The utility model provides a device for drying carbide slag by calcium oxide, which comprises a storage bin 1 and a drying tube 2, and further comprises a vacuum pump 3 and a conveying device as shown in figure 1, wherein the drying tube 2 is L-shaped, the storage bin 1 is positioned above the vertical part of the drying tube 2 and is communicated with the upper end of the vertical part of the drying tube 2, and when the device is used, the calcium oxide and the carbide slag are mixed and then enter the drying tube 2 from the storage bin 1. The lower surface of the horizontal part of the drying pipe 2 is provided with a discharge port 6, and the discharge port 6 is arranged at the end part far away from the storage bin 1. 2 upper surfaces of drying tube are upwards protruding formation cross-section for the portion of breathing in 13 of isosceles trapezoid shape, and the sealed upper end center department of locating portion of breathing in 13 of vacuum pump 3, the portion of breathing in 13 can make things convenient for vacuum pump 3 to 2 inside bleeds of drying tube for the inside negative pressure of 2 inside vacuum tubes improves carbide slag evaporation rate. The bottom in the horizontal position of drying tube 2 is located to conveyor level, in order to avoid the mixture to continuously get into drying tube 2 for the inside mixture volume of drying tube 2 is too much, causes conveyor pay-off difficulty or causes vacuum pump 3 to breathe in the difficulty, and the vertical position of drying tube 2 is equipped with feed valve 10, comes whether feeding or feeding volume according to the volume adjustment of the inside mixture of drying tube 2.

The conveying device according to the utility model is a conveyor belt or a screw conveyor or other device which can convey the mixture, preferably in order to be able to stir the mixture during the conveying of the mixture, so that the mixture is stirredMixture materialThe evaporation is sufficient, the conveying device is a spiral conveying mechanism and comprises a spiral rod 4 and a motor 5, the spiral rod 4 is rotatably arranged at the inner bottom of the horizontal part of the drying tube 2, the motor 5 is arranged at the horizontal part of the drying tube 2 and close to the outer end part of the storage bin 1, and the end part of the spiral rod 4 close to the motor 5 is rotatably connected to the motor 5.

Preferably, the screw rod 4 of the screw conveying mechanism of the present invention is a single screw rod or a double screw rod. When the screw rod 4 is a single screw rod, the connection mode of the screw rod 4 and the motor 5 is as described above; when the spiral rod 4 is a double-spiral rod, the drying device further comprises two gears, namely a first gear 7 and a second gear 8, the two gears are arranged in the drying tube 2 close to the motor 5, the first gear 7 is rotatably sleeved on the spiral rod 4 rotatably connected with the motor 5 and meshed with the second gear 8, the spiral rod 4 which is not rotatably connected with the motor 5 is rotatably connected on the second gear 8, and the two spiral rods 4 are arranged at the inner bottom of the drying tube 2, as shown in fig. 2.

When auger delivery mechanism's hob 4 used for the double helix pole, starter motor 5 when rotating hob 4 of connecting on motor 5, drove first gear 7 and rotate, then second gear 8 rotates, drives hob 4 of connecting on second gear 8 and rotates, and two hobs 4 rotate simultaneously, the intensive mixing mixture for carbide slag is dry abundant, promotes the mixture to the 6 ejection of compact of discharge gate simultaneously, and drying efficiency is high.

The drying tube 2 is provided with the bearings 9 at the inner side of the end part close to the discharge hole 6, the number of the bearings 9 corresponds to that of the spiral rods 4, the end part of each spiral rod 4 far away from the storage bin 1 is rotatably sleeved in the corresponding bearing 9, and the bearing 9 can bear the end part of each spiral rod 4, so that the phenomenon that the end part of each spiral rod 4 is unstable in rotation or easy to damage due to no fixation can be avoided.

The utility model also comprises a discharge valve 11, and the discharge valve 11 is arranged at the discharge hole 6.

The outer surfaces of the storage bin 1 and the drying tube 2 are respectively provided with a heat-insulating layer 12, the outer layer of the heat-insulating layer 12 is an aluminum skin 14, and the middle of the heat-insulating layer 12 is heat-insulating cotton 15. The heat preservation cotton 15 can keep warm for a long time to the inside mixture of equipment, increases the evaporation rate, and the aluminium skin 14 corrosion resistance is better, can protect feed bin 1 and drying tube 2 not corroded increase of service life.

The using principle of the utility model is as follows: when the calcium oxide carbide slag drying equipment is used, the feed valve 10 and the discharge valve 11 are opened, the vacuum pump 3 and the motor 5 are started, calcium oxide and carbide slag are mixed and then enter the drying tube 2 from the storage bin 1, the mixture is naturally evaporated in the process, the motor 5 rotates to drive the screw rod 4 to rotate, the screw rod 4 fully and uniformly stirs the mixture, the vacuum pump 3 sucks gas in the drying tube 2, negative pressure evaporation is formed in the drying tube 2, the evaporation speed is high, the mixture is gradually moved to the discharge port 6 while the screw rod 4 rotates and stirs, the dried mixture is discharged out of the drying tube 2, the evaporation efficiency in the drying tube 2 is increased due to the use of the heat insulation layer 12, and the feed valve 10 is adjusted in real time according to the amount of the mixture in the drying tube 2 in the using process. The scheme of the utility model has the advantages of simple structure, low drying cost, short drying process and high drying efficiency.

The above-mentioned embodiments are merely descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art should fall into the protection scope of the present invention without departing from the design concept of the present invention, and the technical contents of the present invention as claimed are all described in the technical claims.

Claims

1. An apparatus for drying carbide slag by calcium oxide, comprising a silo (1) and a drying tube (2), characterized in that: still include vacuum pump (3) and conveyor, drying tube (2) be L shape, feed bin (1) be located the top at the vertical position of drying tube (2), and communicate with the upper end at the vertical position of drying tube (2), the lower surface at drying tube (2) horizontal position be equipped with discharge gate (6), discharge gate (6) locate the tip of keeping away from feed bin (1), drying tube (2) upper surface upwards protruding formation cross-section be getter portion (13) of isosceles trapezoid shape, vacuum pump (3) sealed upper end center department of locating getter portion (13), the conveyor level locate the horizontal position of drying tube (2) bottom in, the vertical position of drying tube (2) be equipped with feed valve (10).

2. The apparatus for drying carbide slag using calcium oxide according to claim 1, wherein: conveyor be screw conveying mechanism, screw conveying mechanism include hob (4) and motor (5), hob (4) rotatable locate the interior bottom of the horizontal position of drying tube (2), motor (5) locate the horizontal position of drying tube (2) and be close to the outer tip of feed bin (1), hob (4) tip that is close to motor (5) rotate and connect on motor (5).

3. The apparatus for drying carbide slag using calcium oxide according to claim 2, wherein: the screw rod (4) of the screw conveying mechanism is a single screw rod or a double screw rod.

4. The apparatus for drying carbide slag using calcium oxide according to claim 3, wherein: drying tube (2) be equipped with bearing (9) in the tip inboard that is close to discharge gate (6), bearing (9) quantity and hob (4) correspond, hob (4) keep away from the tip of feed bin (1) and rotate to cup joint in bearing (9) that correspond.

5. The apparatus for drying carbide slag using calcium oxide according to claim 1, wherein: still include bleeder valve (11), bleeder valve (11) set up in discharge gate (6) department.

6. The apparatus for drying carbide slag using calcium oxide according to claim 1, wherein: the outer surface of feed bin (1) and drying tube (2) all be equipped with one deck heat preservation (12), the outer of heat preservation (12) be aluminium skin (14), the centre of heat preservation (12) be heat preservation cotton (15).