Calcium carbonate preparation system and method

Abstract

The invention relates to the field of calcium carbonate preparation, in particular to a calcium carbonate preparation system and method.The calcium carbonate preparation system comprises a preparation cylinder, a plurality of leakage grooves are formed in the preparation cylinder, a filter bag is fixedly connected into the preparation cylinder, a blocking cover is fixedly connected to the upper end of the preparation cylinder, the multiple leakage grooves are blocked by the blocking cover, a pressing plate is slidably connected into the preparation cylinder, and a feeding hopper is fixedly connected to the upper end of the pressing plate; a hollow cylinder is rotatably connected to the middle of the pressing plate, a hollow pipe is slidably connected into the hollow cylinder, a plurality of through holes are formed in the hollow pipe, the lower end of the hollow pipe is in an inverted cone shape, a spring is arranged between the upper end of the hollow pipe and the top wall of the hollow cylinder, and a plurality of crushing cutters are rotatably connected to the hollow pipe; according to the calcium carbonate crushing and loosening device disclosed by the invention, a dehydrated calcium carbonate caking part can be directly crushed and loosened, and the preparation efficiency of calcium carbonate is further improved.

Description

Technical Field

[0001] This invention relates to the field of calcium carbonate preparation, and more particularly to a calcium carbonate preparation system and method. Background Technology

[0002] Light calcium carbonate, also known as precipitated calcium carbonate or simply light calcium carbonate, is produced by calcining limestone and other raw materials to generate lime and carbon dioxide, then adding water to slake the lime to produce lime milk, and then introducing carbon dioxide to carbonate the lime milk to produce calcium carbonate precipitate. Finally, it is obtained by dehydration, drying, and pulverization. Alternatively, sodium carbonate and calcium chloride can undergo a double decomposition reaction to produce calcium carbonate precipitate, which is then dehydrated, dried, and pulverized. In the process of preparing light calcium carbonate, the calcium carbonate after dehydration is prone to caking, and it needs to be crushed separately to turn it into powder. This process is time-consuming and costly, so the efficiency of calcium carbonate preparation needs to be further improved. Summary of the Invention

[0003] In view of this, the technical problem to be solved by the present invention is to provide a calcium carbonate preparation system and method, which can directly crush and loosen the agglomerated part of dehydrated calcium carbonate, thereby further improving the preparation efficiency of calcium carbonate.

[0004] A calcium carbonate preparation system includes a preparation cylinder with multiple slots. A filter bag is fixedly connected inside the preparation cylinder. A baffle is fixedly connected to the upper end of the preparation cylinder, blocking the multiple slots. A pressure plate is slidably connected inside the preparation cylinder. A feed hopper is fixedly connected to the upper end of the pressure plate. A hollow cylinder is rotatably connected to the middle of the pressure plate. A hollow tube is slidably connected inside the hollow cylinder. The hollow tube has multiple through holes. The lower end of the hollow tube is inverted conical. A spring is provided between the upper end of the hollow tube and the top wall of the hollow cylinder.

[0005] Multiple crushing blades are rotatably connected to the hollow tube, and a torsion spring is fixedly connected to the rotatable connection between each crushing blade and the hollow tube.

[0006] A flexible hose is rotatably connected to the upper end of the hollow cylinder.

[0007] A drive wheel is rotatably connected to the feed hopper, and a driven wheel is fixedly connected to the hollow cylinder. The drive wheel and the driven wheel mesh and drive each other.

[0008] A calcium carbonate preparation system further includes a collection cylinder, wherein the preparation cylinder is rotatably connected inside the collection cylinder. Attached Figure Description

[0009] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0010] Figure 1 and Figure 2 This is a schematic diagram of the overall structure of the preparation system;

[0011] Figure 3 This is a cross-sectional view of the structure of the prepared cylinder;

[0012] Figure 4 This is a schematic diagram of the pressure plate structure;

[0013] Figure 5 This is a cross-sectional view of the filter bag structure;

[0014] Figure 6 This is a schematic diagram of the feed hopper structure;

[0015] Figure 7 This is a schematic diagram of the hose structure;

[0016] Figure 8 This is a cross-sectional view of the hollow tube structure;

[0017] Figure 9 This is a schematic diagram of the structure of the crusher blade;

[0018] Figure 10 This is a schematic diagram of the trough structure. Detailed Implementation

[0019] The present invention will be described in detail with reference to the accompanying drawings in the embodiments of the present invention.

[0020] See Figures 3-10 The diagram shows an embodiment of the present invention capable of breaking down and loosening dehydrated calcium carbonate agglomerates. Further,

[0021] A calcium carbonate preparation system includes a preparation cylinder 101 with multiple slots 102. A filter bag 103 is fixedly connected to the preparation cylinder 101 by bolts. A baffle 104 is fixedly connected to the upper end of the preparation cylinder 101 by bolts, blocking the multiple slots 102. A pressure plate 205 is slidably connected inside the preparation cylinder 101. A feed hopper 206 is welded and fixedly connected to the upper end of the pressure plate 205. A hollow cylinder 301 is rotatably connected to the middle of the pressure plate 205 through a bearing. A hollow tube 302 is slidably connected inside the hollow cylinder 301. Multiple through holes 304 are opened on the hollow tube 302. The lower end of the hollow tube 302 is inverted conical. A spring 303 is provided between the upper end of the hollow tube 302 and the top wall of the hollow cylinder 301.

[0022] When using the preparation system, the operator first pours a calcium hydroxide solution into the preparation cylinder 101. The calcium hydroxide solution flows into the preparation cylinder 101 through the feed hopper 206. Then, carbon dioxide gas is introduced into the hollow cylinder 301. The carbon dioxide passes through the hollow cylinder 301 and immerses itself in the hollow tube 302. Finally, it is discharged into the calcium hydroxide solution through multiple through holes 304, allowing the carbon dioxide to fully react with the calcium hydroxide to produce calcium carbonate precipitate and water. After the two have completely reacted, the calcium carbonate precipitates at the bottom of the preparation cylinder 101 after a period of time. At this point, the baffle 104 is removed, exposing the multiple drainage grooves 102 on the preparation cylinder 101. Then, the water can seep out through the filter bag 103 and finally be discharged through the multiple slots 102 on the preparation cylinder 101. After the water is drained, the operator controls the pressure plate 205 to move downward. The pressure plate 205 drives the bottom of the hollow tube 302 to first insert into the calcium carbonate powder. When the hollow tube 302 contacts the bottom of the preparation cylinder 101, the hollow tube 302 slides differentially inside the hollow cylinder 301, and the spring 303 is compressed by force. The pressure plate 205 continues to move downward and squeezes the calcium carbonate powder, so that the excess water in the calcium carbonate is squeezed out, thereby promoting water discharge and increasing the dehydration speed.

[0023] After extrusion and dehydration, the remaining moist calcium carbonate powder in the preparation cylinder 101 is compacted, and the hollow tube 302 is located in the calcium carbonate powder. Then, the preparation cylinder 101 is controlled to rotate around its own axis. The centrifugal force generated when the preparation cylinder 101 rotates can throw out the excess water in the calcium carbonate, thereby further realizing the dehydration function.

[0024] After centrifugation and dehydration, the operator controls the pressure plate 205 to move upwards. The pressure plate 205 drives the hollow tube 302 to move upwards. Since the hollow tube 302 is located in the compacted calcium carbonate powder and the lower end of the hollow tube 302 is inverted conical, the upward movement of the hollow tube 302 will drive the compacted calcium carbonate powder, causing the clumps of calcium carbonate powder to crack and break. Then, by controlling the hollow cylinder 301 to drive the hollow tube 302 to rotate, the clumps are further loosened, thus solving the problem of easy clumping during the dehydration of calcium carbonate powder.

[0025] Finally, as the hollow tube 302 rotates, hot air is introduced into the hollow cylinder 301, allowing the hot air to be discharged through multiple through holes 304, which achieves the effect of uniformly drying the calcium carbonate powder and further improves the loosening effect of the calcium carbonate powder.

[0026] See Figures 7-9 The diagram illustrates an embodiment according to the present invention that can further improve the loosening effect.

[0027] Multiple crushing blades 305 are rotatably connected to the hollow tube 302 via bearings, and a torsion spring 306 is fixedly connected to the rotatable connection between each crushing blade 305 and the hollow tube 302.

[0028] In its natural state, the multiple crushing blades 305 are in an extended state due to the action of the torsion springs 306. When the multiple crushing blades 305 are inserted into the calcium carbonate powder, they gather towards the center due to resistance, and the multiple torsion springs 306 are under stress. When centrifugally dehydrated, as the hollow tube 302 moves upward, the upward movement of the multiple crushing blades 305 can promote the crushing of the surrounding clumps of calcium carbonate. When the hollow tube 302 rotates, the multiple crushing blades 305 further crush the calcium carbonate clumps, improving the loosening effect. As the calcium carbonate becomes loose, the multiple crushing blades 305 will fully extend under the action of the torsion springs 306, thereby increasing the crushing range and ensuring that the calcium carbonate is fully loosened.

[0029] See Figure 8 A schematic diagram of an embodiment of the invention, which facilitates the transfer of carbon dioxide gas or hot air into the hollow cylinder 301, is shown. Further,

[0030] The upper end of the hollow cylinder 301 is rotatably connected to the flexible hose 204 via a bearing.

[0031] The hose 204 can be connected to a gas cylinder or hot air blower containing carbon dioxide, thereby facilitating the transfer of carbon dioxide gas or hot air into the hollow cylinder 301 to achieve the effect of calcium carbonate generation or drying.

[0032] See Figure 6 A schematic diagram of an embodiment of the invention that enables the hollow cylinder 301 to rotate is shown. Further,

[0033] A drive wheel 201 is rotatably connected to the feed hopper 206 via a bearing, and a driven wheel 203 is fixedly connected to the hollow cylinder 301 via a key. The drive wheel 201 and the driven wheel 203 mesh and transmit power.

[0034] By controlling the drive wheel 201 to drive the driven wheel 203 to rotate, the hollow cylinder 301 is driven to rotate.

[0035] See Figure 3 The diagram shows an embodiment of the invention that serves to shield and collect water. Further,

[0036] A calcium carbonate preparation system further includes a collection cylinder 401, and a preparation cylinder 101 is rotatably connected to the collection cylinder 401 via a bearing.

[0037] The water ejected from the preparation cylinder 101 during centrifugal dehydration is discharged into the collection cylinder 401, which serves to shield and collect the water.

[0038] See Figure 1 A schematic diagram of an embodiment of the invention, which allows the pressure plate 205 to move downwards or upwards, is shown. Further,

[0039] Two cylinders 406 are fixedly connected to the upper end of the collecting cylinder 401 by bolts, and the pressure plate 205 is fixedly connected to the moving end of the two cylinders 406 by bolts.

[0040] By controlling the extension or retraction of the moving ends of the two cylinders 406, the pressure plate 205 can be moved downward or upward to achieve the function of squeezing and dehydrating.

[0041] See Figure 3 A schematic diagram of an embodiment of the invention capable of driving the hollow tube 302 to rotate is shown. Further,

[0042] The upper end of the collecting cylinder 401 is fixedly connected to the first motor 402 by bolts. The output shaft of the first motor 402 is fixedly connected to the limiting shaft 403 by a coupling. The upper end of the drive wheel 201 is provided with a limiting groove 202.

[0043] After the extrusion and centrifugal dehydration are completed, the control plate 205 moves upward so that the limiting shaft 403 is inserted into the limiting groove 202. At this time, the preparation cylinder 101 is kept fixed. The first motor 402 drives the limiting shaft 403 to drive the drive wheel 201 to rotate, thus realizing the function of rotating the hollow tube 302.

[0044] See Figure 3 A schematic diagram of an embodiment of the present invention capable of driving the preparation cylinder 101 to rotate is shown. Further,

[0045] The lower end of the collecting cylinder 401 is fixedly connected to the second motor 404 by bolts, and the preparation cylinder 101 is fixedly connected to the output shaft of the second motor 404 by a coupling.

[0046] By controlling the second motor 404, the preparation cylinder 101 can be driven to rotate inside the collection cylinder 401, thereby achieving the function of centrifugal dehydration.

[0047] See Figure 3 A schematic diagram of an embodiment of the invention, showing the ability to drain water from the collection cylinder 401, is shown. Further,

[0048] A discharge pipe 405 is installed at the bottom of the collection cylinder 401. Water collected in the collection cylinder 401 can be discharged through the discharge pipe 405 to prevent water level in the collection cylinder 401 from entering the preparation cylinder 101.

[0049] A method for preparing a calcium carbonate preparation system, the method comprising the following steps:

[0050] Step 1: Pour the calcium hydroxide solution into the preparation cylinder 101, and then introduce carbon dioxide into the preparation cylinder 101 to produce a reaction, generating calcium carbonate precipitate and water;

[0051] Step 2: Drain the water from the preparation cylinder 101, and at the same time squeeze the calcium carbonate precipitate to promote the removal of excess water;

[0052] Step 3: By controlling the rotation of the preparation cylinder 101, the centrifugal force generated by the preparation cylinder 101 is used to remove the water from the calcium carbonate;

[0053] Step 4: Control the hollow tube 302 to rotate to break up and loosen the clumped calcium carbonate, and use multiple crushing blades 305 to fully crush the calcium carbonate.

[0054] Step 5: Introduce hot air into the hollow tube 302. During the process of crushing and loosening the calcium carbonate, the hot air will fully dry the calcium carbonate to obtain calcium carbonate powder.

Claims

1. A calcium carbonate preparation system, characterized in that: The device includes a preparation cylinder (101), which has multiple slots (102) and a filter bag (103) fixedly connected inside the preparation cylinder (101). A baffle (104) is fixedly connected to the upper end of the preparation cylinder (101) and blocks the multiple slots (102). A pressure plate (205) is slidably connected inside the preparation cylinder (101). A feed hopper (206) is fixedly connected to the upper end of the pressure plate (205). A hollow cylinder (301) is rotatably connected in the middle of the pressure plate (205). A hollow tube (302) is slidably connected inside the hollow cylinder (301). Multiple through holes (304) are opened on the hollow tube (302). The lower end of the hollow tube (302) is inverted conical. A spring (303) is provided between the upper end of the hollow tube (302) and the top wall of the hollow cylinder (301).

2. The calcium carbonate preparation system according to claim 1, characterized in that: Multiple crushing blades (305) are rotatably connected to the hollow tube (302), and a torsion spring (306) is fixedly connected to the rotatable connection between each crushing blade (305) and the hollow tube (302).

3. The calcium carbonate preparation system according to claim 1, characterized in that: The upper end of the hollow cylinder (301) is rotatably connected to a flexible hose (204).

4. The calcium carbonate preparation system according to claim 1, characterized in that: A drive wheel (201) is rotatably connected to the feed hopper (206), and a driven wheel (203) is fixedly connected to the hollow cylinder (301). The drive wheel (201) and the driven wheel (203) mesh and drive each other.

5. The calcium carbonate preparation system according to claim 4, characterized in that: It also includes a collection tube (401), and the preparation tube (101) is rotatably connected inside the collection tube (401).

6. The calcium carbonate preparation system according to claim 5, characterized in that: Two cylinders (406) are fixedly connected to the upper end of the collecting cylinder (401), and the pressure plate (205) is fixedly connected to the moving end of the two cylinders (406).

7. A calcium carbonate preparation system according to claim 6, characterized in that: The upper end of the collecting cylinder (401) is fixedly connected to a first motor (402), and a limit shaft (403) is fixedly connected to the output shaft of the first motor (402). A limit groove (202) is provided on the upper end of the drive wheel (201).

8. The calcium carbonate preparation system according to claim 7, characterized in that: The lower end of the collecting cylinder (401) is fixedly connected to a second motor (404), and the preparation cylinder (101) is fixedly connected to the output shaft of the second motor (404).

9. A calcium carbonate preparation system according to claim 8, characterized in that: A discharge pipe (405) is installed at the bottom of the collecting cylinder (401).

10. The method for preparing a calcium carbonate preparation system according to claim 9, characterized in that: The method includes the following steps: Step 1: Pour the calcium hydroxide solution into the preparation cylinder (101), and then introduce carbon dioxide into the preparation cylinder (101) to produce a reaction, generating calcium carbonate precipitate and water; Step 2: Drain the water from the preparation cylinder (101) and squeeze the calcium carbonate precipitate to promote the removal of excess water; Step 3: By controlling the rotation of the preparation cylinder (101), the centrifugal force generated by the preparation cylinder (101) is used to remove the water from the calcium carbonate; Step 4: Control the hollow tube (302) to rotate to break up and loosen the clumped calcium carbonate, and use multiple crushing blades (305) to fully crush the calcium carbonate; Step 5: Introduce hot air into the hollow tube (302) to fully dry the calcium carbonate during the process of crushing and loosening it, thus obtaining calcium carbonate powder.

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