Calcium carbonate powder grading device

Abstract

The utility model relates to the technical field of grading devices, in particular to a calcium carbonate powder grading device which comprises a grading box body, the top of the grading box body is connected with a pretreatment box, a filter screen is arranged in the pretreatment box, a scattering mechanism is arranged above the filter screen, and a feeding hopper is installed at the top of the pretreatment box. A discharging pipe communicated to the interior of the grading box body is installed at the bottom of the pretreatment box, an electromagnetic valve is installed on the discharging pipe, a heavy powder outlet is formed in the position, right opposite to the discharging pipe, of the bottom of the grading box body, and a positive pressure air pipe is connected to the position, close to the heavy powder outlet, of one end of the grading box body; one end of the grading box body is connected with a positive-pressure air pipe, the positive-pressure air pipe is connected with a positive-pressure fan, the other end of the grading box body is connected with a negative-pressure air pipe, the negative-pressure air pipe is connected with a negative-pressure fan, and a light powder outlet is formed in the position, close to the negative-pressure air pipe, of the bottom of the grading box body; according to the utility model, caked powder is scattered, so that the grading effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grading devices, and more specifically to a calcium carbonate powder grading device. Background Art

[0002] In the manufacture of calcium carbonate powder, the powder coming out of the crushing equipment has different coarseness and fineness. According to different usage requirements or quality standards, the calcium carbonate powder needs to be graded. Grading can ensure that the calcium carbonate powder has a specific particle size distribution and physical properties.

[0003] When the air separation device is used to classify the calcium carbonate powder, the different masses of calcium carbonate powders of different particle sizes are utilized, and different forces are applied to them in the airflow, thereby achieving classification. However, the calcium carbonate powder is easily affected by moisture and agglomerates, which makes it easy for some light powder to stick together during the separation process and fall to the discharge port of the heavy powder, reducing the classification effect. Utility Model Content

[0004] The utility model aims to provide a calcium carbonate powder classification device to break up agglomerated powder and improve the classification effect.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] A calcium carbonate powder grading device comprises a grading box, the top of the grading box is connected to a pretreatment box, a filter is arranged in the pretreatment box, a breaking mechanism is arranged above the filter, a feed hopper is installed on the top of the pretreatment box, a discharge pipe connected to the inside of the grading box is installed at the bottom of the pretreatment box, a solenoid valve is installed on the discharge pipe, a heavy powder outlet is opened at the bottom of the grading box facing the discharge pipe, one end of the grading box is connected to a positive pressure air duct near the heavy powder outlet, the positive pressure air duct is connected to a positive pressure fan, the other end of the grading box is connected to a negative pressure air duct, the negative pressure air duct is connected to a negative pressure fan, and a light powder outlet is opened at the bottom of the grading box near the negative pressure air duct.

[0007] Furthermore, the breaking up mechanism includes a rotating shaft rotatably arranged in the pretreatment box, a sleeve is fixedly sleeved on the rotating shaft, a plurality of breaking up rods are fixedly connected to the sleeve, and a driving motor for driving the rotating shaft to rotate is installed on the outside of the pretreatment box.

[0008] Furthermore, a micro vibration motor is installed at the bottom of the filter screen, and a protective shell is arranged on the outside of the micro vibration motor.

[0009] Furthermore, an electric heating wire is embedded in the bottom of the pretreatment box.

[0010] Furthermore, a baffle is provided in the grading box near the negative pressure air duct.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The magnetic calcium carbonate powder enters the pretreatment box through the feed hopper, the agglomerated magnetic calcium carbonate powder is dispersed by a dispersing mechanism, the dispersed magnetic calcium carbonate powder passes through a filter screen, and the undispersed agglomerates remain on the filter screen waiting to be dispersed by the dispersing mechanism, and the dispersed powder enters the grading box through a discharge pipe, the positive pressure air duct inputs air, and the negative pressure air duct draws air away, under the action of the positive pressure air duct and the negative pressure air duct, the heavy powder directly falls into the heavy powder outlet, and the light material approaches the negative pressure air duct under the action of the air flow, and finally falls into the light powder outlet, so that the calcium carbonate powder is graded. The utility model disperses the agglomerated powder and improves the grading effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] 1. Classification box; 101. Heavy powder outlet; 102. Light powder outlet; 2. Pretreatment box; 3. Filter; 4. Feed hopper; 5. Discharge pipe; 6. Solenoid valve; 7. Positive pressure air duct; 8. Negative pressure air duct; 9. Rotating shaft; 10. Sleeve; 11. Breaking rod; 12. Driving motor; 13. Micro vibration motor; 14. Electric heating wire; 15. Blocking net. DETAILED DESCRIPTION

[0015] like Figure 1 As shown, a calcium carbonate powder grading device comprises a grading box 1, the top of the grading box 1 is connected to a pretreatment box 2, a filter screen 3 is arranged in the pretreatment box 2, a dispersing mechanism is arranged above the filter screen 3, a feed hopper 4 is installed on the top of the pretreatment box 2, a discharge pipe 5 connected to the inside of the grading box 1 is installed at the bottom of the pretreatment box 2, a solenoid valve 6 is installed on the discharge pipe 5, a heavy powder outlet 101 is opened at the bottom of the grading box 1 opposite to the discharge pipe 5, one end of the grading box 1 is connected to a positive pressure air duct 7 near the heavy powder outlet 101, the positive pressure air duct 7 is connected to a positive pressure fan, the other end of the grading box 1 is connected to a negative pressure air duct 8, the negative pressure air duct 8 is connected to a negative pressure fan, and a light powder outlet 102 is opened at the bottom of the grading box 1 near the negative pressure air duct 8.

[0016] The breaking mechanism includes a rotating shaft 9 rotatably arranged in the pretreatment box 2, a sleeve 10 is fixedly sleeved on the rotating shaft 9, a plurality of breaking rods 11 are fixedly connected to the sleeve 10, and a driving motor 12 for driving the rotating shaft 9 to rotate is installed on the outside of the pretreatment box 2.

[0017] A micro vibration motor 13 is installed at the bottom of the filter 3, and a protective shell is arranged on the outside of the micro vibration motor 13; the micro vibration motor 13 drives the filter 3 to vibrate to prevent the filter 3 from being blocked by agglomerated powder, and at the same time drives the powder agglomerates on the filter 3 to move to prevent the agglomerates from accumulating in the dead corners of the breaking mechanism.

[0018] An electric heating wire 14 is embedded in the bottom of the pretreatment box 2; the electric heating wire 14 is provided to heat the powder to prevent the powder from getting damp and agglomerating again.

[0019] A blocking net 15 is provided in the grading box 1 near the negative pressure air duct 8 ; the blocking net 15 is provided to prevent powder from entering the negative pressure air duct 8 .

[0020] Working principle:

[0021] The magnetic calcium carbonate powder enters the pretreatment box 2 through the feed hopper 4, and the driving motor 12 drives the rotating shaft 9 to rotate, driving the sleeve 10 and the breaking rod 11 to rotate. The breaking rod 11 breaks up the agglomerated magnetic calcium carbonate powder, and the broken magnetic calcium carbonate powder passes through the filter screen 3. The unbroken agglomerates remain on the filter screen 3 waiting to be broken up by the breaking rod 11. The broken powder enters the grading box 1 through the discharge pipe 5, and the positive pressure air duct 7 inputs air, and the negative pressure air duct 8 draws out the air. Under the action of the positive pressure air duct 7 and the negative pressure air duct 8, the heavy powder directly falls into the heavy powder outlet 101, and the light material approaches the negative pressure air duct 8 under the action of the airflow, and finally falls into the light powder outlet 102, thereby performing graded treatment on the calcium carbonate powder. The utility model breaks up the agglomerated powder and improves the grading effect.

[0022] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A calcium carbonate powder classification device, characterized in that: The invention comprises a grading box (1), the top of which is connected to a pretreatment box (2), a filter screen (3) is arranged inside the pretreatment box (2), a dispersing mechanism is arranged above the filter screen (3), a feed hopper (4) is installed on the top of the pretreatment box (2), a discharge pipe (5) connected to the inside of the grading box (1) is installed on the bottom of the pretreatment box (2), a solenoid valve (6) is installed on the discharge pipe (5), and the bottom of the grading box (1) is provided with a filter screen (3). A heavy powder outlet (101) is provided at the bottom opposite to the discharge pipe (5); one end of the grading box (1) is connected to a positive pressure air duct (7) near the heavy powder outlet (101); the positive pressure air duct (7) is connected to a positive pressure fan; the other end of the grading box (1) is connected to a negative pressure air duct (8); the negative pressure air duct (8) is connected to a negative pressure fan; a light powder outlet (102) is provided at the bottom of the grading box (1) near the negative pressure air duct (8).

2. The calcium carbonate powder classifying device according to claim 1, characterized in that: The dispersing mechanism comprises a rotating shaft (9) rotatably arranged in the pretreatment box (2), a sleeve (10) being fixedly sleeved on the rotating shaft (9), a plurality of dispersing rods (11) being fixedly connected to the sleeve (10), and a driving motor (12) for driving the rotating shaft (9) to rotate is installed on the outer side of the pretreatment box (2).

3. The calcium carbonate powder classifying device according to claim 1, characterized in that: A micro vibration motor (13) is installed at the bottom of the filter screen (3), and a protective shell is arranged outside the micro vibration motor (13).

4. The calcium carbonate powder classification device according to claim 1, characterized in that: An electric heating wire (14) is embedded in the bottom of the pretreatment box (2).

5. The calcium carbonate powder classification device according to claim 1, characterized in that: A blocking net (15) is provided in the grading box (1) near the negative pressure air duct (8).

Images