CN212081966U

CN212081966U - Drying device for calcium carbonate

Info

Publication number: CN212081966U
Application number: CN202020695455.0U
Authority: CN
Inventors: 杨晓霏; 张发中
Original assignee: Zhejiang Province Jiande City Zheng Fa Calcium Carbonate Co ltd
Current assignee: Zhejiang Province Jiande City Zheng Fa Calcium Carbonate Co ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-12-04
Anticipated expiration: 2030-04-29

Abstract

The utility model discloses a drying device for calcium carbonate, which comprises a drying oven shell, wherein a feeding unit, a heating unit, a scattering unit and a raking unit are arranged in the drying oven shell; a feeding port is formed above the oven shell, and a discharging port is formed in the side wall of the lower part of the oven shell; the feeding unit consists of a plurality of conveying mechanisms which are sequentially connected end to end; the heating unit comprises a heater and a hot gas cavity; the scattering units are sequentially arranged below the tail ends of the corresponding conveying mechanisms; the scattering unit is arranged above the corresponding conveying mechanism in sequence. The calcium carbonate powder on the conveying belt is raked and scattered by the raking and scattering unit; by the scattering unit, the calcium carbonate powder is scattered, and the possibility of calcium carbonate powder caking is avoided by combining the raking and scattering. Through adding in transport mechanism and establishing the heater, add in oven shell bottom and establish the hot-air cavity, it is better to carry out double drying's drying effect to calcium carbonate powder simultaneously.

Description

Drying device for calcium carbonate

Technical Field

The utility model relates to a calcium carbonate processing field, especially a drying device for calcium carbonate.

Background

In the process of calcium carbonate processing, the prepared calcium carbonate needs to be dried for subsequent production. The calcium carbonate drying used in the current factory is usually carried out by using a drying tower or a drying oven.

Drying towers are commonly used for large batch drying and drying ovens are used for small batch drying.

At present, calcium carbonate in a drying box used in a factory is in a static state in a drying process, the surface of the calcium carbonate is easy to dry, and the interior of the calcium carbonate is not dried completely. And because the calcium carbonate is dried in a static state, the phenomenon of calcium carbonate powder agglomeration can occur, and the product quality can be reduced due to the calcium carbonate agglomeration. And what the drying cabinet adopted is that the mode of letting in hot air carries out the drying, can't effectual adjustment drying scale according to the actual conditions of calcium carbonate in the in-service use to cause dry effect not good.

So the calcium carbonate drying cabinet that uses in the factory at present has calcium carbonate and easily appears caking and influence product quality, and the not good problem of drying cabinet actual drying effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a drying device for calcium carbonate. The utility model has the advantages of calcium carbonate can not agglomerate, and the drying cabinet drying effect is better relatively.

The technical scheme of the utility model: a drying device for calcium carbonate comprises an oven shell, wherein a feeding unit, a heating unit, a plurality of scattering units and a plurality of raking units are arranged in the oven shell; a feeding port is formed above the oven shell; a discharge hole is formed in the side wall of the lower part of the oven shell; the feeding unit consists of a plurality of conveying mechanisms which are sequentially connected end to end, and each conveying mechanism comprises a rotating roller and a conveying belt arranged on the rotating roller; the heating unit comprises a heater arranged in the conveying mechanism and a hot air cavity arranged at the bottom of the oven shell; each scattering unit is sequentially arranged below the tail end of the corresponding conveying mechanism; each scattering unit is arranged above the corresponding conveying mechanism in sequence; an exhaust plate is arranged on the top plate of the oven shell; air holes are uniformly distributed on the exhaust plate; and the last conveying mechanism in the feeding unit penetrates from the discharge port to the outer side of the oven shell.

In the drying device for calcium carbonate, each scattering unit comprises a barrel body, a rotating shaft arranged in the barrel body, centrifugal discs respectively arranged above, in the middle and below the rotating shaft, a feeding hopper arranged above the barrel body, and a motor arranged on the outer shell of the oven and corresponding to the rotating shaft; the motor is connected with the rotating shaft through a sleeve penetrating through the barrel body and the shell of the oven; a belt which is respectively connected with the motor and the rotating shaft in a rotating way is arranged in the sleeve; the rotating shaft is driven to rotate by a belt after the motor rotates; a discharge hole is formed below the barrel body.

In the drying device for calcium carbonate, a scraping plate tangent to the bottom of the conveyor belt is arranged on the feeding hopper; the scraper can scrape off calcium carbonate adhered to the conveyor belt.

In the drying device for calcium carbonate, an inwardly-contracted retainer ring is arranged in the barrel body; the retaining ring corresponds to the centrifugal disc, and the calcium carbonate is thrown out under the action of the centrifugal disc and then is collected above the next centrifugal disc through the retaining ring, so that the calcium carbonate powder can be fully scattered.

In the drying device for calcium carbonate, each of the raking units includes a ball screw, a stepping motor disposed on the oven housing and connected to the ball screw, a slider disposed on the ball screw, a connecting frame disposed below the slider, and rake teeth disposed on two sides of the connecting frame respectively.

In the drying device for calcium carbonate, one end of the hot air cavity is provided with an air duct penetrating through the shell of the oven, and the air duct is provided with a sealing valve; the upper side of the hot air cavity is provided with an air hole.

Compared with the prior art, the utility model rakes and scatters the calcium carbonate powder on the conveying belt by additionally arranging the raking and scattering unit on the conveying mechanism; the tail end of the conveying mechanism is additionally provided with the scattering unit, so that the calcium carbonate powder is scattered when being sent to the next conveying belt, and the possibility of caking of the calcium carbonate powder is avoided by combining the scattering and scattering. Through adding in transport mechanism and establishing the heater, add in oven shell bottom and establish the hot-air chamber, carry out dual drying to calcium carbonate powder simultaneously, it is better to compare the drying effect who only adopts the hot-air heating. So the utility model has the advantages of calcium carbonate can not agglomerate, and the drying effect of the drying oven is relatively better.

Furthermore, a plurality of heaters are adopted for heating, the working number of the heaters can be selectively controlled in the actual working process, and the working scale of the drying device is effectively adjusted. Through install the scraper blade additional on the income hopper of breaking up the unit, can hang down the calcium carbonate powder of adhesion on the conveyer belt is effectual.

Drawings

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

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is an enlarged view at B in FIG. 1;

fig. 4 is a schematic structural view of the rake teeth and the connecting frame of the present invention;

the labels in the figures are: 1-oven shell, 11-feeding port, 12-discharging port, 13-exhaust plate, 2-conveying mechanism, 21-rotating roller, 22-conveying belt, 31-heater, 32-hot air chamber, 41-barrel, 42-rotating shaft, 43-feeding hopper, 45-scraping plate, 51, 52, 53-centrifugal disc, 6-motor, 61-sleeve, 71-stepping motor, 72-ball screw, 73-slide block, 74-connecting frame and 75-rake teeth.

Detailed Description

The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.

Examples are given. A drying device for calcium carbonate is shown in figures 1-4 and comprises an oven shell 1, wherein a feeding unit, a heating unit, a plurality of scattering units and a plurality of raking units are arranged in the oven shell 1; a feeding port 11 is formed above the oven shell 1; a discharge hole 12 is formed in the side wall of the lower part of the oven shell 1; the feeding unit consists of four conveying mechanisms 2 which are sequentially connected end to end, and each conveying mechanism 2 comprises two rotating rollers 21 and a conveying belt 22 arranged on the rotating rollers 21; the heating unit comprises a heater 31 arranged in the conveying mechanism 2 and a hot air cavity 32 arranged at the bottom of the oven shell 1; each scattering unit is sequentially arranged below the conveying tail end of the corresponding conveying mechanism 2; each scattering unit is arranged above the corresponding conveying mechanism 2 in sequence; an exhaust plate 13 is arranged on the top plate of the oven shell 1; air holes are uniformly distributed on the exhaust plate 13; the last conveying mechanism 2 in the feeding unit penetrates from the discharge port 12 to the outer side of the oven shell 1.

Each scattering unit comprises a barrel body 41, a rotating shaft 42 arranged in the barrel body 41, a centrifugal disc 51, a centrifugal disc 52, a centrifugal disc 53 which are respectively arranged on the upper part, the middle part and the lower part of the rotating shaft 42, a feeding hopper 43 arranged above the barrel body 41, and a motor 6 which is arranged on the oven shell 1 and corresponds to the rotating shaft 42; the motor 6 is connected with the rotating shaft 42 through a sleeve 61 penetrating through the barrel body 41 and the oven shell 1; a belt which is respectively connected with the motor 6 and the rotating shaft 42 in a rotating way is arranged in the sleeve 61; a discharge hole is formed below the barrel body 41.

The feeding hopper 43 is provided with a scraping plate 45 tangent to the bottom of the conveyor belt 22.

Each of the raking units comprises a ball screw 72, a stepping motor 71 arranged on the oven shell 1 and connected with the ball screw 72, a slide block 73 arranged on the ball screw 72, a connecting frame 74 arranged below the slide block 73, and rake teeth 75 respectively arranged on two sides of the connecting frame 74.

One end of the hot air cavity 32 is provided with an air duct which penetrates through the oven shell 1, and a sealing valve is arranged on the air duct; the upper side of the hot air cavity 32 is provided with air holes.

The working principle is as follows: the utility model discloses as shown in fig. 1-4, according to the actual calcium carbonate condition of waiting to dry, open heater 31 and constantly let in hot air in to steam chamber 32. After the drying device is preheated, calcium carbonate powder is put into the drying device through the feeding port 11. The calcium carbonate powder falls on the conveyor belt 22 while being heated and dried by the heater 31. The stepping motor 71 drives the ball screw 72 to rotate, the ball screw 72 drives the slide block 73 to do horizontal linear motion, and the connecting frame 74 drives the rake teeth 75 to rake and disperse the calcium carbonate powder on the conveyor belt 22. The calcium carbonate powder after raking up falls into the scattering unit through the feeding hopper 43 at the tail end of the conveying mechanism 2 and is scattered by the centrifugal disc 51, the centrifugal disc 52 and the centrifugal disc 53 in sequence. The broken calcium carbonate powder falls from the tub 41 onto the conveyor belt 22 of the next conveyor mechanism 2. The calcium carbonate powder falls onto the last conveying mechanism 2 and is conveyed out of the drying device through the discharge port 12. Moisture during the drying process is discharged out of the drying apparatus through the airing holes of the airing plate 13.

Claims

1. The utility model provides a drying device for calcium carbonate which characterized in that: the drying oven comprises an oven shell (1), wherein a feeding unit, a heating unit, a plurality of scattering units and a plurality of raking units are arranged in the oven shell (1); a feeding port (11) is arranged above the oven shell (1); a discharge hole (12) is formed in the side wall of the lower part of the oven shell (1); the feeding unit consists of a plurality of conveying mechanisms (2) which are sequentially connected end to end, and each conveying mechanism (2) comprises a rotating roller (21) and a conveying belt (22) arranged on the rotating roller (21); the heating unit comprises a heater (31) arranged in the conveying mechanism (2) and a hot air cavity (32) arranged at the bottom of the oven shell (1); each scattering unit is sequentially arranged below the tail end of the corresponding conveying mechanism (2); each scattering unit is arranged above the corresponding conveying mechanism (2) in sequence; an exhaust plate (13) is arranged on the top plate of the oven shell (1); air holes are uniformly distributed on the exhaust plate (13); the last conveying mechanism (2) in the feeding unit penetrates through the outer side of the oven shell (1) from the discharge hole (12); each scattering unit comprises a ball screw (72), a stepping motor (71) arranged on the oven shell (1) and connected with the ball screw (72), a sliding block (73) arranged on the ball screw (72), a connecting frame (74) arranged below the sliding block (73) and rake teeth (75) respectively arranged on two sides of the connecting frame (74).

2. The drying device for calcium carbonate according to claim 1, characterized in that: each scattering unit comprises a barrel body (41), a rotating shaft (42) arranged in the barrel body (41), centrifugal discs (51, 52 and 53) respectively arranged at the upper part, the middle part and the lower part of the rotating shaft (42), a feeding hopper (43) arranged above the barrel body (41), and a motor (6) arranged on the oven shell (1) and corresponding to the rotating shaft (42); the motor (6) is connected with the rotating shaft (42) through a sleeve (61) penetrating through the barrel body (41) and the oven shell (1); and a belt which is respectively connected with the motor (6) and the rotating shaft (42) in a rotating way is arranged in the sleeve (61).

3. The drying device for calcium carbonate according to claim 2, characterized in that: and a scraping plate (45) tangent to the bottom of the conveyor belt (22) is arranged on the feeding hopper (43).

4. The drying device for calcium carbonate according to claim 1, characterized in that: one end of the hot air cavity (32) is provided with an air duct which penetrates through the oven shell (1), and a sealing valve is arranged on the air duct; the upper side of the hot air cavity (32) is provided with air holes.