A secondary continuous modification device for calcium carbonate

Abstract

The utility model relates to a kind of calcium carbonate secondary continuous modification device, including mixer, the discharge end of the mixer is connected with dust collection pipe, discharge reversing valve is arranged on the dust collection pipe, the rear end of the discharge reversing valve is provided with first discharge port and second discharge port, the first discharge port is communicated with the feed end of elevator by first conveying pipe, the discharge end of the elevator is connected with the feed end of the mixer by second conveying pipe, the second discharge port is connected to sink bin.The utility model can make calcium carbonate secondary modification, realize modification sufficient, improve the effect of modification.

Description

Technical Field

[0001] This utility model relates to the field of modified calcium carbonate production technology, and in particular to a calcium carbonate secondary continuous modification device. Background Technology

[0002] Heavy calcium carbonate, due to its wide availability and excellent properties, is widely used in plastics, rubber, coatings, adhesives, sealants, pigments, toothpaste, and paper, and is a polymer-based composite material. However, due to the inorganic nature of heavy calcium carbonate powder, its compatibility with organic resins is poor. To improve the mechanical and overall properties of calcium carbonate-filled polymer-based composites and expand their applications in polymer composites, surface modification is necessary. Previously, the modification was performed using the equipment mentioned in the Chinese patent application number CN202322591506.1, publication number CN221156352U, entitled "A Continuous Modification Tank Structure for Calcium Carbonate." The previous approach involved adding all the modifier to the mixer at once, modifying it, and then directly transferring it to the raw material silo, resulting in insufficient modification and poor modification effect. Summary of the Invention

[0003] The purpose of this invention is to provide a calcium carbonate secondary continuous modification device, which enables calcium carbonate to undergo secondary modification, achieves sufficient modification, and improves the modification effect.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a calcium carbonate secondary continuous modification device, comprising a mixer, wherein the discharge end of the mixer is connected to a dust collection pipe, a discharge diverter valve is provided on the dust collection pipe, and a first discharge port and a second discharge port are provided at the rear end of the discharge diverter valve, the first discharge port is connected to the feed end of an elevator via a first conveying pipe, the discharge end of the elevator is connected to the feed end of the mixer via a second conveying pipe, and the second discharge port is connected to a settling bin.

[0005] Furthermore, a settling chamber is provided between the first conveying pipe and the feed end of the elevator.

[0006] Furthermore, the settling chamber transports materials to the elevator via a built-in auger screw conveyor.

[0007] Furthermore, the mixing chamber of the mixer has a dispersing wheel, and the dispersing wheel is provided with secondary dispersing blades.

[0008] Furthermore, a modifier feeder is provided on the side wall of the mixer.

[0009] The beneficial effects of this utility model are as follows: First, all the calcium carbonate raw material is fed into the mixer through the feed end. Then, half of the modifier is added to the mixer through the reagent feeder to modify the calcium carbonate powder. Hot air conveys the first-modified calcium carbonate to the integrated pipe. At this time, the first outlet of the integrated pipe's discharge diversion valve is connected to the channel of the first conveying pipe, while the second outlet of the integrated pipe's discharge diversion valve is closed. The first-modified calcium carbonate powder is then conveyed to the elevator through the dust collection pipe and the first conveying pipe. The elevator and the second conveying pipe then re-add the first-modified calcium carbonate powder back into the mixer through the feed end. The other half of the modifier is then added to the mixer for a second modification. At this time, the second outlet of the integrated pipe's discharge diversion valve is opened, while the first outlet of the integrated pipe's discharge diversion valve is closed to the channel of the first conveying pipe. The second-modified calcium carbonate is then conveyed to the sedimentation chamber for subsequent use. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a diagram showing the internal structure of the settling chamber in this utility model; Figure 3 This is a diagram showing the internal structure of the mixing machine in this utility model.

[0011] The components are: 1. Mixer, 2. Dust collection pipe, 3. Discharge diverting valve, 4. First conveying pipe, 5. Elevator, 6. Second conveying pipe, 7. Feeding end of mixer, 8. Settling bin, 9. Screw conveyor, 10. Modifier feeder, 11. Dispersing wheel, 12. Secondary dispersing blade. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Please see Figures 1 to 3This utility model provides an embodiment: a calcium carbonate secondary continuous modification device, including a mixer 1, the discharge end of the mixer 1 is connected to a dust collection pipe 2, the dust collection pipe 2 is provided with a discharge diversion valve 3, the rear end of the discharge diversion valve 3 is provided with a first discharge port and a second discharge port, the first discharge port is connected to the feed end of the elevator 5 through a first conveying pipe 4, the discharge end of the elevator 5 is connected to the feed end 7 of the mixer through a second conveying pipe 6, and the second discharge port is connected to a settling bin. The mixer 1 used in this utility model is the mixer 1 designed in application number CN202322591506.1, which was filed prior to this application. The calcium carbonate raw material is first fully fed into the mixer 1 through the feed end 7. Then, half of the required amount of modifier is added to the mixer 1 through the reagent feeder to modify the calcium carbonate powder. Hot air conveys the first modified calcium carbonate to the integrated pipe. At this time, the first outlet of the integrated pipe's discharge diversion valve 3 is connected to the channel of the first conveying pipe 4, and the channel of the second outlet of the integrated pipe's discharge diversion valve 3... The first modified calcium carbonate powder is transported to the elevator 5 via the dust collection pipe 2 and the first conveying pipe 4. The elevator 5 and the second conveying pipe 6 then feed the first modified calcium carbonate powder back into the mixer 1 through the mixer feed end 7. The remaining half of the modifier is then introduced into the mixer 1 for a second modification. At this time, the second outlet of the integrated pipe's discharge diversion valve 3 opens, while the first outlet of the integrated pipe's discharge diversion valve 3 and the first conveying pipe 4 close. The second-modified calcium carbonate is then conveyed to the settling chamber for further use. Compared to calcium carbonate that has only undergone one modification, calcium carbonate that has undergone two modifications has a more complete modification and a better modification effect.

[0014] Please continue reading. Figure 1 As shown in one embodiment of this utility model, a settling chamber 8 is provided between the first conveying pipe 4 and the feed end of the elevator 5. The settling chamber 8 can settle the first modified calcium carbonate conveyed through the first discharge port and the first conveying pipe 4, thereby better conveying the calcium carbonate to the elevator 5 and improving the conveying efficiency.

[0015] Please continue reading. Figure 1 , Figure 2 As shown, in one embodiment of this utility model, the settling bin 8 conveys materials to the elevator 5 via a built-in auger screw conveyor 9. The auger screw conveyor 9 can transport calcium carbonate settled at the bottom of the settling bin 8 to the feed end of the elevator 5.

[0016] Please continue reading. Figure 3As shown in one embodiment of the present invention, the mixing chamber of the mixer 1 has a dispersing wheel 11, and the dispersing wheel 11 is provided with secondary dispersing blades 12. The dispersing wheel 11 and the secondary dispersing blades 12 can further improve the wind force of the vortex wind, and can better disperse the modifier and heavy calcium carbonate.

[0017] Please continue reading. Figure 1 As shown in one embodiment of this utility model, a modifier feeder 10 is provided on the side wall of the mixer 1. The feeder can be used to add modifier twice, and the amount of modifier added twice can be controlled by controlling the timing of the addition.

[0018] This invention operates on the following principle: Calcium carbonate raw material is first fed into mixer 1 through feed end 7. Then, half the required amount of modifier is added to mixer 1 via a reagent feeder to modify the calcium carbonate powder. Hot air then transports the first-modified calcium carbonate to the integrated pipe. At this time, the first outlet of the integrated pipe's discharge diversion valve 3 is connected to the channel of the first conveying pipe 4, while the second outlet of the integrated pipe's discharge diversion valve 3 is closed. The first-modified calcium carbonate powder passes through a dust collector. Pipe 2 and the first conveying pipe 4 are conveyed to the elevator 5. The first modified calcium carbonate powder is then fed back into the mixer 1 through the feed end of the mixer 1 via the elevator 5 and the second conveying pipe 6. The other half of the modifier is then introduced into the mixer 1 for a second modification. At this time, the channel of the second discharge port of the discharge diversion valve 3 of the integrated pipe is opened, and the first discharge port of the discharge diversion valve 3 of the integrated pipe and the channel of the first conveying pipe 4 are closed. The second modified calcium carbonate is then conveyed to the sedimentation chamber for subsequent use.

[0019] The above description is only a preferred embodiment of the present utility model and should not be construed as a limitation of this application. All equivalent changes and modifications made within the scope of the patent application of the present utility model should be included in the scope of the present utility model.

Claims

1. A continuous secondary modification device for calcium carbonate, comprising a mixer, characterized in that: The discharge end of the mixer is connected to a dust collection pipe, and a discharge diversion valve is provided on the dust collection pipe. The rear end of the discharge diversion valve is provided with a first discharge port and a second discharge port. The first discharge port is connected to the feed end of the elevator via a first conveying pipe. The discharge end of the elevator is connected to the feed end of the mixer via a second conveying pipe. The second discharge port is connected to the sedimentation bin.

2. The calcium carbonate secondary continuous modification device according to claim 1, characterized in that: A settling chamber is provided between the first conveying pipe and the feed end of the elevator.

3. The calcium carbonate secondary continuous modification device according to claim 2, characterized in that: The settling chamber transports materials to the elevator via a built-in auger screw conveyor.

4. The calcium carbonate secondary continuous modification device according to claim 1, characterized in that: The mixing chamber of the mixer has a dispersing wheel, and the dispersing wheel is equipped with secondary dispersing blades.

5. The calcium carbonate secondary continuous modification device according to claim 1, characterized in that: The side wall of the mixer is equipped with a modifier feeder.

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