Powder concentrator for calcium carbonate powder production

Abstract

The utility model discloses a powder concentrator for calcium carbonate powder production, and particularly relates to the technical field of calcium powder production, the powder concentrator comprises a screening box, the top end of the screening box is provided with a feeding hopper, the bottom end of the screening box is connected with a fine powder discharging pipe and a coarse powder discharging pipe, the screening box is further provided with a screening part, the feeding hopper comprises a hopper part in a funnel shape, and the hopper part is provided with a feeding port. A discharging part is integrally formed at the bottom of the hopper part; the interior of the discharging part is hollow to form a discharging channel, a pretreatment mechanism is further arranged on the discharging part, and the pretreatment mechanism comprises a crushing part and a filter screen which are arranged in the discharging channel; the pretreatment mechanism is arranged in the feed hopper, so that calcium carbonate powder can be pretreated, the feed hopper can be prevented from being blocked, feeding of the powder concentrator is facilitated, caked calcium carbonate powder can be prevented from remaining in the powder concentrator, screening of the calcium carbonate powder is facilitated, and screening efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of calcium powder production, in particular to a powder classifier for producing calcium carbonate powder. Background Art

[0002] At present, in the production process of calcium carbonate powder, a powder selector is generally required to screen the calcium carbonate powder to screen out calcium carbonate powder of different finenesses, so as to facilitate the screening out of calcium carbonate powder that does not meet the fineness requirements and re-crush it until the fineness of the calcium carbonate powder meets the requirements, thereby achieving high-quality production of calcium carbonate powder.

[0003] For example, in the Chinese patent publication number CN219309387U, a powder classifier for calcium powder production is disclosed. The feed hopper can be covered by installing a hopper cover, and calcium powder is added to the powder classifier through the feed hopper. The pillar can support the support plate, and the support plate can support the hopper cover control mechanism. The second motor can drive the screw to rotate, the screw can drive the sliding sleeve to move, and the sliding sleeve can drive the second convex bracket to move. The control rod is axially connected to the first convex bracket, the second convex bracket can drive the control rod to move, and the control rod can drive the first convex bracket to rotate, thereby driving the bucket. The cover rotates to control the bucket cover, realizing automatic control of the opening and closing of the bucket cover, facilitating the feeding operation and preventing the calcium powder from flying out of the powder classifier. However, when the calcium carbonate powder is screened, if it is damp, it is easy to agglomerate. However, the above-mentioned powder classifier lacks a structure for pre-treating the calcium carbonate powder, which often causes the feed hopper to be blocked, affecting the feeding of the powder classifier. In addition, the agglomerated calcium carbonate powder is difficult to be screened out and is easy to remain in the powder classifier, affecting the powder classifier's screening of the calcium carbonate powder, which is not conducive to the efficient screening of the calcium carbonate powder. Utility Model Content

[0004] The purpose of this utility model is to provide a powder classifier for producing calcium carbonate powder to solve the above-mentioned shortcomings in the technology.

[0005] In order to achieve the above-mentioned object, the utility model provides the following technical solution: a powder classifier for producing calcium carbonate powder, comprising a screening box, a feed hopper is installed at the top of the screening box, and a fine powder discharge pipe and a coarse powder discharge pipe are connected to the bottom of the screening box, and a screening component is also provided on the screening box, the feed hopper includes a funnel-shaped hopper portion, and a discharge portion is integrally formed at the bottom of the hopper portion;

[0006] The internal hollow space of the discharge part forms a discharge channel, and a pretreatment mechanism is also provided on the discharge part. The pretreatment mechanism includes a crushing part and a filter screen arranged in the discharge channel. The crushing part is also connected to a power part that drives it to rotate, and the crushing part is located above the filter screen.

[0007] Preferably, the crushing member comprises two rotatable shafts, and crushing rollers are mounted on both of the shafts.

[0008] Preferably, the power part includes a third motor fixed on one side of the blanking part, one end of the two shafts extends to the outside of the blanking part, and is respectively installed with a second sub-gear and a second main gear that mesh with each other, the main shaft of the third motor is connected to one end of one of the shafts, and a protective shell that covers the third motor, the second sub-gear and the second main gear is also installed on the side wall of the blanking part.

[0009] Preferably, an inclined guide plate is fixed on one side of the inner wall of the discharge part, and a drop opening for the calcium carbonate powder to fall is left between the lower end of the guide plate and the inner wall of the discharge part, and the two crushing rollers are located between the guide plate and the filter screen.

[0010] Preferably, the screening component includes a rotating shaft rotatably installed inside the screening box, a plurality of connecting rods are installed on the outer wall of the rotating shaft, and a scraper plate is installed at one end of each of the connecting rods, one side of the scraper plate is in contact with the inner wall of the screening box, and a second motor is also fixed to one side of the screening box, and the second motor is used to drive the rotating shaft to rotate.

[0011] Preferably, a cover plate is provided on the top of the hopper portion to cover it, and a flip component is also provided on one side of the hopper portion to drive the cover plate to flip and open.

[0012] Preferably, the flipping component includes a fixing frame fixed on the side wall of the hopper portion, and a flipping frame installed on one side of the cover plate, a rotating cavity is opened at the top of the fixing frame, rotating shafts are installed on both sides of the bottom end of the flipping frame and are located in the rotating cavity, and one end of one of the rotating shafts extends to the outside of the fixing frame and is installed with a first sub-gear, a first motor is also fixed on the side wall of the fixing frame, and a first main gear meshing with the first sub-gear is installed on the main shaft of the first motor, and a protective box covering the first motor, the first sub-gear and the first main gear is also fixed on one side of the fixing frame.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] 1. By setting a pretreatment mechanism in the feed hopper, when calcium carbonate powder is added to the feed hopper, normal calcium carbonate powder falls into the screening box through the filter holes on the filter screen, while agglomerated calcium carbonate powder can be broken up by the pretreatment mechanism and falls into the screening box through the filter holes on the filter screen, thereby achieving pretreatment of calcium carbonate powder. This not only avoids clogging of the feed hopper and facilitates feeding of the powder classifier, but also solves the problem that agglomerated calcium carbonate powder is difficult to be screened out and easily remains in the powder classifier, affecting the powder classifier's screening of calcium carbonate powder, thereby facilitating the screening of calcium carbonate powder and improving screening efficiency.

[0015] 2. An inclined guide plate is set on the inner wall of the discharge part of the feed hopper. When the calcium carbonate powder is added to the hopper, the calcium carbonate powder first falls onto the guide plate, then slides downward along the inclined direction of the guide plate, and falls from the discharge port. This increases the flow of the calcium carbonate powder and slows down the falling speed of the calcium carbonate powder, which is conducive to the crushing parts to evenly crush the calcium carbonate powder, thereby facilitating the subsequent screening of the calcium carbonate powder and further improving the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 This is one of the overall structural diagrams of the utility model;

[0018] Figure 2 For this utility model Figure 1 Schematic diagram of the structure when the middle cover is opened;

[0019] Figure 3 This is the second schematic diagram of the overall structure of the utility model;

[0020] Figure 4 For this utility model Figure 1 sectional view of

[0021] Figure 5 For this utility model Figure 4 Front view of

[0022] Figure 6 For this utility model Figure 1 Front view of

[0023] Figure 7 For this utility model Figure 2 Front view of

[0024] Figure 8This is a cross-sectional view of the feed hopper of the present utility model;

[0025] Figure 9 It is a structural diagram of the turning component of the utility model.

[0026] Description of reference numerals:

[0027] 1. Screening box; 2. Feed hopper; 21. Hopper part; 22. Discharging part; 3. Cover plate; 4. Turning part; 41. Fixing frame; 42. Turning frame; 43. Protective box; 44. First motor; 45. First main gear; 46. First sub-gear; 5. Fine powder discharge pipe; 6. Screening part; 61. Second motor; 62. Scraper plate; 7. Pretreatment mechanism; 71. Guide plate; 72. Crushing roller; 73. Filter screen; 74. Protective shell; 75. Second sub-gear; 76. Second main gear; 77. Third motor; 8. Coarse powder discharge pipe. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] The utility model provides Figures 1-9 The powder concentrator for producing calcium carbonate powder shown in the figure includes a screening box 1, a feed hopper 2 is installed at the top of the screening box 1, and a fine powder discharge pipe 5 and a coarse powder discharge pipe 8 are connected to the bottom of the screening box 1. The screening box 1 is also provided with a screening component 6. The feed hopper 2 includes a funnel-shaped hopper portion 21, and a discharge portion 22 is integrally formed at the bottom of the hopper portion 21.

[0030] The internal hollow space of the discharge part 22 forms a discharge channel, and a pretreatment mechanism 7 is also provided on the discharge part 22. The pretreatment mechanism 7 includes a crushing part and a filter screen 73 arranged in the discharge channel. The crushing part is also connected to a power part that drives it to rotate, and the crushing part is located above the filter screen 73.

[0031] Specifically, such as Figure 4 、 Figure 5 and Figure 8 As shown, the crushing member comprises two rotatable shafts, on which crushing rollers 72 are mounted.

[0032] Specifically, such as Figure 6-Figure 8 As shown, the power part includes a third motor 77 fixed to one side of the blanking part 22, one end of each of the two shafts extends to the outside of the blanking part 22, and is respectively installed with a second sub-gear 75 and a second main gear 76 that mesh with each other. The main shaft of the third motor 77 is connected to one end of one of the shafts, and a protective shell 74 that covers the third motor 77, the second sub-gear 75 and the second main gear 76 is also installed on the side wall of the blanking part 22.

[0033] Specifically, such as Figure 4 and Figure 5 As shown, the screening component 6 includes a rotating shaft rotatably mounted inside the screening box 1, a plurality of connecting rods are mounted on the outer wall of the rotating shaft, and a scraper plate 62 is mounted on one end of each of the connecting rods. One side of the scraper plate 62 contacts the inner wall of the screening box 1, and a second motor 61 is also fixed to one side of the screening box 1, and the second motor 61 is used to drive the rotating shaft to rotate.

[0034] When screening calcium carbonate powder, the calcium carbonate powder is first added into the screening box 1 through the feed hopper 2, and then the second motor 61 drives the rotating shaft to rotate, so that the rotating shaft drives the scraper plate 62 to rotate through the connecting rod, so as to stir the calcium carbonate powder in the screening box 1, so that the calcium carbonate powder with finer particle size is discharged through the fine powder discharge pipe 5, and the calcium carbonate powder with coarser particle size is discharged through the coarse powder discharge pipe 8, thereby achieving the screening process of calcium carbonate powder;

[0035] When calcium carbonate powder is added to the feed hopper 2, the calcium carbonate powder falls from the hopper part 21 into the discharge part 22. At this time, normal calcium carbonate powder falls into the screening box 1 through the filter holes on the filter screen 73, while the agglomerated calcium carbonate powder remains on the filter screen 73. Subsequently, the second main gear 76 is driven to rotate by the third motor 77, so that the second main gear 76 drives the second sub-gear 75 meshing with it to rotate, thereby realizing the two crushing rollers 72 rotating in opposite directions to crush the agglomerated calcium carbonate powder and let it fall into the screening box 1 through the filter holes on the filter screen 73, thereby realizing the pretreatment of the calcium carbonate powder, preventing the agglomerated calcium carbonate powder from causing the powder classifier to be blocked, which is beneficial to the screening of calcium carbonate powder and improving the screening efficiency.

[0036] Furthermore, in this embodiment, in order to prevent the calcium carbonate powder from overflowing from the feed hopper 2 and generating dust, Figure 1-Figure 7 as well as Figure 9 As shown, a cover plate 3 is provided on the top of the hopper portion 21 to cover it, and a flip component 4 is also provided on one side of the hopper portion 21 to drive the cover plate 3 to flip and open.

[0037] The flipping component 4 includes a fixing frame 41 fixed on the side wall of the hopper portion 21, and a flipping frame 42 installed on one side of the cover plate 3. A rotating cavity is opened at the top of the fixing frame 41, and rotating shafts are installed on both sides of the bottom end of the flipping frame 42 and are located in the rotating cavity. One end of one of the rotating shafts extends to the outside of the fixing frame 41 and is installed with a first sub-gear 46. A first motor 44 is also fixed on the side wall of the fixing frame 41, and a first main gear 45 meshing with the first sub-gear 46 is installed on the main shaft of the first motor 44. A protective box 43 that covers the first motor 44, the first sub-gear 46 and the first main gear 45 is also fixed on one side of the fixing frame 41.

[0038] When calcium carbonate powder is added into the feed hopper 2, the first motor 44 drives the first main gear 45 to rotate, so that the first main gear 45 drives the first sub-gear 46 meshed with it to rotate, and then the first sub-gear 46 drives the flip frame 42 to rotate in the rotating cavity on the fixed frame 41, so that the flip frame 42 drives the cover plate 3 to flip open (as shown in FIG. Figure 2 and Figure 7 As shown in the figure), when the feeding is completed, the first motor 44 drives the first main gear 45 to rotate in the opposite direction again, so that the first main gear 45 drives the first sub-gear 46 to rotate in the opposite direction, thereby driving the cover plate 3 to flip downward, and closing the feed hopper 2, thereby realizing automatic opening and closing of the feed hopper 2, facilitating feeding, preventing dust, and facilitating the screening of calcium carbonate powder.

[0039] In addition, in one embodiment, Figure 4 、 Figure 5 and Figure 8 As shown, an inclined guide plate 71 is fixed to one side of the inner wall of the discharge part 22, and a drop opening for the calcium carbonate powder to fall is left between the lower end of the guide plate 71 and the inner wall of the discharge part 22, and the two crushing rollers 72 are both located between the guide plate 71 and the filter screen 73.

[0040] When calcium carbonate powder is added to the hopper portion 21, the calcium carbonate powder first falls onto the guide plate 71, then slides downward along the inclined direction of the guide plate 71, and falls from the drop port, thereby increasing the flow of the calcium carbonate powder and slowing down the falling speed of the calcium carbonate powder, which is conducive to the crushing part to evenly crush the calcium carbonate powder, thereby facilitating the subsequent screening of the calcium carbonate powder and improving the screening efficiency.

[0041] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A powder classifier for producing calcium carbonate powder, comprising a screening box (1), a feed hopper (2) being installed at the top of the screening box (1), a fine powder discharge pipe (5) and a coarse powder discharge pipe (8) being connected at the bottom, and a screening component (6) being further provided on the screening box (1), characterized in that: The feed hopper (2) comprises a funnel-shaped hopper portion (21), and a feed discharge portion (22) is integrally formed at the bottom of the hopper portion (21); The interior of the material discharge portion (22) is hollow to form a material discharge channel, and a pre-treatment mechanism (7) is also provided on the material discharge portion (22). The pre-treatment mechanism (7) comprises a crushing member and a filter screen (73) arranged in the material discharge channel. The crushing member is also connected to a power member for driving the crushing member to rotate, and the crushing member is located above the filter screen (73).

2. A powder classifier for producing calcium carbonate powder according to claim 1, characterized in that: The crushing member comprises two rotatable shafts, and crushing rollers (72) are mounted on both shafts.

3. A powder classifier for producing calcium carbonate powder according to claim 2, characterized in that: The power member comprises a third motor (77) fixed to one side of the material discharge portion (22); one end of each of the two shafts extends to the outside of the material discharge portion (22) and is respectively provided with a second sub-gear (75) and a second main gear (76) meshing with each other; a main shaft of the third motor (77) is connected to one end of one of the shafts; and a protective shell (74) for covering the third motor (77), the second sub-gear (75) and the second main gear (76) is further provided on the side wall of the material discharge portion (22).

4. A powder classifier for producing calcium carbonate powder according to claim 2, characterized in that: An inclined guide plate (71) is also fixed to one side of the inner wall of the material discharge portion (22), and a material drop opening for the calcium carbonate powder to drop is left between the lower end of the guide plate (71) and the inner wall of the material discharge portion (22), and the two crushing rollers (72) are both located between the guide plate (71) and the filter screen (73).

5. The powder classifier for producing calcium carbonate powder according to claim 1, characterized in that: The screening component (6) comprises a rotating shaft rotatably mounted inside the screening box (1); a plurality of connecting rods are mounted on the outer wall of the rotating shaft, and a scraper plate (62) is mounted on one end of each of the connecting rods; one side of the scraper plate (62) contacts the inner wall of the screening box (1); a second motor (61) is also fixed to one side of the screening box (1), and the second motor (61) is used to drive the rotating shaft to rotate.

6. The powder classifier for producing calcium carbonate powder according to claim 1, characterized in that: A cover plate (3) is provided on the top of the hopper portion (21) to cover the hopper portion (21), and a flip component (4) is also provided on one side of the hopper portion (21) to drive the cover plate (3) to flip and open.

7. A powder classifier for producing calcium carbonate powder according to claim 6, characterized in that: The flipping component (4) comprises a fixing frame (41) fixed on the side wall of the hopper portion (21), and a flipping frame (42) mounted on one side of the cover plate (3); a rotating cavity is formed at the top of the fixing frame (41); rotating shafts are mounted on both sides of the bottom end of the flipping frame (42) and are located in the rotating cavity; one end of one of the rotating shafts extends to the outside of the fixing frame (41) and is mounted with a first secondary gear (46); a first motor (44) is also fixed on the side wall of the fixing frame (41); a first main gear (45) meshing with the first secondary gear (46) is mounted on the main shaft of the first motor (44); and a protective box (43) for covering the first motor (44), the first secondary gear (46) and the first main gear (45) is also fixed on one side of the fixing frame (41).

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