A calcium hydroxide purification device

Abstract

The present invention discloses a calcium hydroxide purification device, belonging to the field of calcium hydroxide purification, which includes a disc cylinder. A covering ring is rotatably connected to the outer side of the disc cylinder. The covering ring is provided with a first through groove. A plurality of second through grooves are annularly arranged on the outer circumferential surface of the disc cylinder. The first through groove and the second through groove can be aligned. A plurality of drying and powder-making devices are arranged at the bottom of the disc cylinder. In the present invention, when the covering ring rotates to the corresponding drying and powder-making device, that is, the first through groove and the second through groove at this position can be aligned, the slowly flowing thick calcium hydroxide mixture is spread on the drying and powder-making device, so as to facilitate rapid drying in a thin layer manner. When the covering ring covers all the second through grooves, the thick calcium hydroxide mixture will not flow out. By drying in batches in a thin layer, compared with the piled-up drying of a large amount of thick calcium hydroxide mixture, on the one hand, the drying is sufficient, and on the other hand, it can be dried step by step in batches, thereby improving the drying and use efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of calcium hydroxide purification, and particularly to a calcium hydroxide purification device. Background Art

[0002] Calcium carbonate is an inorganic compound. When containing impurities, it is yellowish or grayish. During production, the limestone is roughly crushed to 150 mm, and the fine slag below 30 - 50 mm is screened out. The screened limestone and fuel are added into the kiln from the top of the kiln regularly and quantitatively, calcined at 900 - 1200 degrees Celsius, and then cooled to obtain the finished product. However, the purity of the prepared calcium oxide is not high. When using calcium carbonate to prepare calcium hydroxide, the impurities mixed in the calcium oxide will affect the purity of calcium hydroxide. Therefore, it is necessary to treat the calcium hydroxide solution to obtain high-purity calcium hydroxide crystals. At the same time, during the process of precipitating calcium hydroxide crystals, it is necessary to cool down the calcium hydroxide solution to reduce the solubility of calcium hydroxide, so that calcium hydroxide precipitates in the form of crystals.

[0003] The patent document with the application number CN202021174970.0 discloses a purification device for calcium hydroxide production, including a reaction kettle. A reactor support frame is additionally installed at the inner bottom end of the reaction kettle, and a reactor is additionally installed at the upper end of the reactor support frame. The feeding end of the reactor protrudes above the reaction kettle; a filtering device is additionally installed at the upper end of the reaction kettle, and the filtering device is erected directly above the reactor.

[0004] Before the calcium hydroxide extracted above precipitates calcium hydroxide crystals, the calcium hydroxide solution is filtered first, which can filter out impurities and improve the purity of calcium hydroxide crystals. The calcium hydroxide used in food additives is generally in powder form. The above process produces primary calcium hydroxide viscous substances. In the prior art, the drying device used in the purification process can only dry the accumulated calcium hydroxide viscous substances. The thickness of calcium hydroxide is large, the drying time is long, and the efficiency is low. Therefore, a drying device for further purification in cooperation with the above reaction kettle is proposed to obtain purified calcium hydroxide powder. Summary of the Invention

[0005] The purpose of the present invention is to solve the disadvantages existing in the prior art, and a calcium hydroxide purification device is proposed to solve the problems existing in the prior art.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A calcium hydroxide purification device includes a disc cylinder. A covering ring is rotatably connected to the outside of the disc cylinder. The covering ring is provided with a first through groove. A plurality of second through grooves are annularly arranged on the outer circular surface of the disc cylinder. The first through groove and the second through groove can be aligned. A plurality of drying and powder-making devices are arranged at the bottom of the disc cylinder;

[0008] Each drying and powder-making device includes two baffle plates arranged in parallel. The baffle plates are fixedly connected to the disc cylinder. An elastic plate is slidably connected between the baffle plates. One end of the elastic plate is fixedly connected to the disc cylinder. A support plate is fixedly connected to the upper side of the disc cylinder. A heating plate is fixedly connected to the bottom of the support plate. One end of the upper side of the support plate is fixedly connected to a telescopic rod. The end of the telescopic rod is fixedly connected to a suspension plate. A sleeve is fixedly connected to the bottom of the suspension plate. One end of the sleeve is of an open structure. The other end of the sleeve is fixedly connected to a collecting pipe. An arc-shaped convex block is arranged inside the sleeve, and the arc-shaped convex block is used for extruding the elastic plate.

[0009] Preferably, the elastic plate is a stainless steel plate. A sealing strip is arranged on the side of the elastic plate which is a stainless steel plate. Side plates are fixedly connected to the ends of the elastic plate.

[0010] Preferably, the telescopic rod is one of an electric push rod, a hydraulic rod or a cylinder.

[0011] Preferably, support columns are fixedly connected to the bottom of the disc cylinder, and bases are fixedly connected to the lower ends of the support columns.

[0012] Preferably, the base is disc-shaped and a counterweight is arranged inside it.

[0013] Preferably, side plates are fixedly connected to the upper side of the disc cylinder. A motor is fixedly connected to the side plates. A gear is fixedly connected to the device of the motor. Tooth grooves are arranged on the upper outer side of the covering ring. The gear is meshed with the covering ring through the tooth grooves.

[0014] Preferably, the upper end of the disc cylinder is of an open structure, and a filter screen is fixedly connected to the upper end of the disc cylinder.

[0015] Preferably, a support plate and an arc-shaped plate are fixedly connected inside the sleeve. The arc-shaped convex block is fixed on the support plate and faces the arc-shaped plate.

[0016] Preferably, an air inlet pipe is fixedly connected to one side of the sleeve. The air inlet pipe is used for inputting clean air. A sealing gasket is fixedly connected to the open end of the sleeve.

[0017] Preferably, the collecting pipes are jointly fixedly connected to an annular hose, and the annular hose is connected to a dust collector through an air pipe.

[0018] The advantages of the present invention are as follows: The calcium hydroxide purification device provided by the present invention rotates the covering ring to the corresponding drying and powder-making device, that is, the first through groove and the second through groove at this position can be aligned, and the thick calcium hydroxide mixture flowing out slowly is spread on the drying and powder-making device, so as to facilitate rapid drying in a thin layer manner. When the covering ring covers all the second through grooves, the thick calcium hydroxide mixture will no longer flow out. By using the method of drying in batches in thin layers, compared with the piled-up drying of a large amount of thick calcium hydroxide mixture, on the one hand, the drying is sufficient, and on the other hand, it can be dried step by step in batches, thereby improving the drying and use efficiency.

[0019] In the present invention, a thin layer of calcium hydroxide is formed on the surface of the elastic plate by the thick calcium hydroxide mixture, and then it is rapidly dried by the heating plate. Under the action of the telescopic rod, the sleeve covers the elastic plate and the baffle together, and at the same time, through the extrusion of the arc-shaped convex block, the elastic plate forms a state where the middle part bulges upward. When the elastic plate forms a state where the middle part bulges upward, the thin layer of dried calcium hydroxide on the upper surface of the elastic plate does not deform with the elastic plate but cracks, which is convenient for collection by the collection pipe. By using the process method of drying in thin layers multiple times, it is convenient to quickly form dry purified calcium hydroxide, so there is no need to wait until all the large quantities of calcium hydroxide are dried, thereby optimizing the drying process and improving production efficiency.

[0020] In the present invention, on the one hand, the air pipe can blow the thin layer of dried calcium hydroxide through air flow, and on the other hand, it can prevent the dust in the drying place from mixing into the purified calcium hydroxide collected, so that the purified calcium hydroxide finally collected by the dust collector will not be contaminated, thereby ensuring the purity of the purified calcium hydroxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the schematic diagram of the basic structure of the present invention;

[0022] Figure 2 is Figure 1 the partial enlarged view of E in

[0023] Figure 3 is the schematic diagram of the connection structure of the annular hose in the present invention;

[0024] Figure 4 is the schematic sectional view of the present invention;

[0025] Figure 5 is Figure 4 the partial enlarged view of F in

[0026] Figure 6 is the working schematic diagram of the arc-shaped convex block extruding the elastic plate. DETAILED DESCRIPTION OF THE INVENTION

[0027] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] As Figures 1-6 shown, a calcium hydroxide purification device provided by the present invention includes a disc cylinder 1. The bottom of the disc cylinder 1 is fixedly connected to a support column 11. The lower end of the support column 11 is fixedly connected to a base 12. The base 12 is disc-shaped and is provided with a counterweight inside. The upper end of the disc cylinder 1 is of an open structure. The upper end of the disc cylinder 1 is fixedly connected to a filter screen 111. After the filtration is completed, the filter screen 111 can be removed, and a suitable pressing plate is placed in the disc cylinder 1 to squeeze out the viscous calcium hydroxide in the disc cylinder 1. The outer side of the disc cylinder 1 is rotatably connected to a covering ring 2. The upper side of the disc cylinder 1 is fixedly connected to a side plate 13. The side plate 13 is fixedly connected to a motor 14. The device of the motor 14 is fixedly connected to a gear 15. The upper end of the outer side of the covering ring 2 is provided with a tooth groove. The gear 15 is engaged with the covering ring 2 through the tooth groove. The covering ring 2 is provided with a first through groove 21. A plurality of second through grooves 22 are arranged in an annular array on the outer circumferential surface of the disc cylinder 1. The first through groove 21 and the second through groove 22 can be aligned. A plurality of drying and powder-making devices 3 are provided at the bottom of the disc cylinder 1;

[0029] After the calcium hydroxide aqueous solution is subjected to primary filtration, the precipitate is obtained by first standing and precipitating. After the turbid solution above is discharged, a thick bottom mixture is obtained. The mixture first passes through the filter screen 111 and then enters the disc cylinder 1. When the covering ring 2 rotates to the corresponding drying and powder-making device 3, that is, the first through groove 21 and the second through groove 22 at this position can be aligned, the slowly flowing thick calcium hydroxide mixture is spread on the drying and powder-making device 3, so as to facilitate rapid drying in a thin layer manner. When the covering ring 2 covers all the second through grooves 22, the thick calcium hydroxide mixture will not flow out. By using fractional thin-layer drying, compared with the piled-up drying of a large amount of thick calcium hydroxide mixture, on the one hand, the drying is sufficient, and on the other hand, it can be dried batch by batch step by step, thereby improving the drying and use efficiency.

[0030] Each drying and powder-making device 3 includes two baffles 31 arranged in parallel. The baffles 31 are fixedly connected to the disc cylinder 1. An elastic plate 32 is slidably connected between the baffles 31. One end of the elastic plate 32 is fixedly connected to the disc cylinder 1. A support plate 33 is fixedly connected to the upper side of the disc cylinder 1. A heating plate 34 is fixedly connected to the bottom of the support plate 33. The heating method of the heating plate 34 is that the electric heating tube generates heat and dries by heat radiation. One end of the upper side of the support plate 33 is fixedly connected to a telescopic rod 35. The telescopic rod 35 is one of an electric push rod, a hydraulic rod or a cylinder. The end of the telescopic rod 35 is fixedly connected to a suspension plate 36. A sleeve 37 is fixedly connected to the bottom of the suspension plate 36. One end of the sleeve 37 is of an open structure. A collecting pipe 38 is fixedly connected to the other end of the sleeve 37. An arc-shaped convex block 39 is arranged inside the sleeve 37, and the arc-shaped convex block 39 is used to squeeze the elastic plate 32.

[0031] The thick calcium hydroxide mixture slowly discharged from the first through groove 21 flows along the elastic plate 32. When the amount of the thick calcium hydroxide mixture flowing out is appropriate, due to the surface adhesion of the elastic plate 32, the thick calcium hydroxide mixture will not cross the lower edge of the elastic plate 32. The thick calcium hydroxide mixture forms a thin layer on the surface of the elastic plate 32 and is then quickly dried by the heating plate 34. Under the action of the telescopic rod 35, the sleeve 37 covers the elastic plate 32 and the baffle 31 at the same time, and through the extrusion of the arc-shaped convex block 39, the elastic plate 32 forms a state with the middle arched upward. When the elastic plate 32 forms the middle arched upward, the dry calcium hydroxide thin layer on the upper surface of the elastic plate 32 does not deform with the elastic plate 32 but cracks, which is convenient for collection by the collecting pipe 38. Only then can there be a process method of drying the thin layer multiple times, which is convenient for quickly forming dry purified calcium hydroxide, so that it is not necessary to wait until all the large quantities of calcium hydroxide are dried, thus optimizing the drying process and improving production efficiency.

[0032] The elastic plate 32 is a stainless steel plate. A sealing strip is arranged on the side of the elastic plate 32 which is a stainless steel plate. A side plate 321 is fixedly connected to the end of the elastic plate 32. A support plate 371 and an arc-shaped plate 372 are fixedly connected inside the sleeve 37. The arc-shaped convex block 39 is fixed on the support plate 371 and faces the arc-shaped plate 372; convex strips are arranged at intervals on the inner arc surface of the arc-shaped plate 372. When the elastic plate 32 is squeezed between the arc-shaped convex block 39 and the arc-shaped plate 372, while the middle of the elastic plate 32 arches upward, a shearing force is generated to rub the thin layer of dry calcium hydroxide into flakes or powders convenient for passing through the air flow, so as to be convenient for centralized collection through the collecting pipe 38.

[0033] One side of the sleeve 37 is fixedly connected to an air intake pipe 373 for inputting clean air. The open end of the sleeve 37 is fixedly connected with a sealing gasket for forming a seal after squeezing and contacting the disc cylinder 1. The collecting pipe 38 is fixedly connected to an annular hose 381 in common. The annular hose 381 is connected to a dust collector through a trachea. The dust collector is a bag type dust collector, and the dust-containing air flow finally settles in the cloth bag, so as to facilitate the collection of purified calcium hydroxide of the powder. On the one hand, the air intake pipe 373 can impact the thin layer of dried calcium hydroxide through the air flow, and on the other hand, it can prevent the dust in the drying place from being mixed into the collected purified calcium hydroxide, so that the purified calcium hydroxide finally collected by the dust collector will not be contaminated, thus ensuring the purity of the purified calcium hydroxide.

[0034] Working principle: for the thick calcium hydroxide mixture, when the covering ring 2 rotates to the corresponding drying and powder making device 3, that is, the first through groove 21 and the second through groove 22 at this position can be aligned, the slowly flowing thick calcium hydroxide mixture covers the surface of the elastic plate 32 to form a thin layer, and then is quickly dried by the heating plate 34. Under the action of the telescopic rod 35, the sleeve 37 covers the elastic plate 32 and the baffle 31 together, and through the extrusion of the arc-shaped convex block 39, the elastic plate 32 forms a state with the middle arched upward. Since the elastic plate 32 forms the middle arched upward, the thin layer of dried calcium hydroxide on the upper surface of the elastic plate 32 does not deform along with the elastic plate 32, but cracks, which is convenient for collection by the collecting pipe 38. Only by using the process method of drying the thin layer multiple times can dry purified calcium hydroxide be quickly formed, so that it is not necessary to wait until all the large quantities of calcium hydroxide are dried, thus optimizing the drying process and improving the production efficiency.

[0035] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A calcium hydroxide purification device, comprising a disc cylinder (1), the outer side of the disc cylinder (1) is rotatably connected with a covering ring (2), the covering ring (2) is provided with a first through groove (21), and a plurality of second through grooves (22) are annularly arranged on the outer circular surface of the disc cylinder (1), and the first through groove (21) and the second through groove (22) can be aligned, and it is characterized in that: A plurality of drying and powder-making devices (3) are provided at the bottom of the disc cylinder (1); Each drying and powder-making device (3) includes two baffles (31) arranged in parallel. The baffles (31) are fixedly connected to the disc cylinder (1). An elastic plate (32) is slidably connected between the baffles (31). One end of the elastic plate (32) is fixedly connected to the disc cylinder (1). A support plate (33) is fixedly connected to the upper side of the disc cylinder (1). A heating plate (34) is fixedly connected to the bottom of the support plate (33). One end of the upper side of the support plate (33) is fixedly connected to a telescopic rod (35). The end of the telescopic rod (35) is fixedly connected to a hanging plate (36). A sleeve (37) is fixedly connected to the bottom of the hanging plate (36). One end of the sleeve (37) is of an open structure. The other end of the sleeve (37) is fixedly connected to a collecting pipe (38). An arc-shaped convex block (39) is provided inside the sleeve (37), and the arc-shaped convex block (39) is used to squeeze the elastic plate (32).

2. The calcium hydroxide purification device according to claim 1, wherein: The elastic plate (32) is a stainless steel plate. A sealing strip is provided on the side of the elastic plate (32) which is a stainless steel plate. A side plate (321) is fixedly connected to the end of the elastic plate (32).

3. The calcium hydroxide purification device according to claim 1, wherein: The telescopic rod (35) is one of an electric push rod, a hydraulic rod or a cylinder.

4. The calcium hydroxide purification device according to claim 1, wherein: Support columns (11) are fixedly connected to the bottom of the disc cylinder (1), and the lower ends of the support columns (11) are fixedly connected to a base (12).

5. The calcium hydroxide purification device according to claim 4, characterized in that: The base (12) is disc-shaped and a counterweight is arranged inside it.

6. The calcium hydroxide purification device according to claim 1, characterized in that: A side plate (13) is fixedly connected to the upper side of the disc cylinder (1). A motor (14) is fixedly connected to the side plate (13). A gear (15) is fixedly connected to the device of the motor (14). Tooth grooves are provided on the upper outer side of the covering ring (2), and the gear (15) is engaged with the covering ring (2) through the tooth grooves.

7. The calcium hydroxide purification device according to claim 1, characterized in that: The upper end of the disc cylinder (1) is of an open structure, and a filter screen (111) is fixedly connected to the upper end of the disc cylinder (1).

8. A calcium hydroxide purification device according to claim 1, characterized in that: A support plate (371) and an arc-shaped plate (372) are fixedly connected inside the sleeve (37), and the arc-shaped convex block (39) is fixed on the support plate (371) and faces the arc-shaped plate (372).

9. The calcium hydroxide purification device according to claim 8, characterized in that: An air inlet pipe (373) is fixedly connected to one side of the sleeve (37), and the air inlet pipe (373) is used for inputting clean air. A sealing gasket is fixedly connected to the open end of the sleeve (37).

10. The calcium hydroxide purification device according to claim 1, characterized in that: The collecting pipes (38) are fixedly connected to a circular hose (381) together, and the circular hose (381) is connected to a dust collector through a trachea.

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