Screening device of calcium carbonate pulverizer

Abstract

The utility model relates to a calcium carbonate pulverizer screening device which comprises a box body (10) and a screen mesh (11), a plurality of mesh holes (12) are formed in the screen mesh (11), and the screen mesh (11) is arranged in the box body (10) and used for screening calcium carbonate raw materials entering the box body (10). The driving assembly (20) drives a rotating shaft (22) to intermittently rotate and move up and down through a motor (21) and drives a deflector rod (23) and a plurality of insertion rods (24) on the deflector rod (23) to intermittently rotate and move up and down, the insertion rods (24) are inserted into meshes (12) to eject calcium carbonate raw materials in the meshes (12), the meshes (12) are prevented from being blocked by large calcium carbonate raw materials, and the influence on the working efficiency of the flour mill is avoided; the insertion rod (24) is separated from the mesh (12) and then rotates to stir the calcium carbonate raw material on the screen (11), so that the smaller calcium carbonate raw material leaks from the mesh (12), and the working efficiency of the flour mill is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of calcium carbonate production equipment, in particular to a calcium carbonate grinding mill screening device. Background Art

[0002] Calcium carbonate is an inorganic compound that exists in rocks such as aragonite, calcite, chalk, limestone, marble, and travertine. It is also the main component of some animal bones or shells. Calcium carbonate powder can be filled in rubber to increase the volume of the product; in the construction industry, calcium carbonate powder can increase the toughness and strength of concrete; in the plastics industry, calcium carbonate powder can play a skeleton role in plastic products, improving the stability, hardness, gloss and flatness of plastic products. The uses of calcium carbonate powder of different particle sizes are also very different, so calcium carbonate powder needs to be crushed, ground and screened.

[0003] The Chinese utility model patent with the authorization announcement number CN218132380U discloses a grinding machine with a screening mechanism for preparing calcium carbonate, which uses a first grinding member and a second grinding member for primary grinding, and a grinding scraper and a grinding screen for secondary grinding and screening, respectively, to achieve the crushing, grinding and screening of calcium carbonate raw materials. However, the defect is that the mesh of the screen is easily blocked by larger calcium carbonate raw materials, thereby affecting the working efficiency of the crusher. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the mesh of the existing grinding mill with a screening mechanism for preparing calcium carbonate is easily blocked by larger calcium carbonate raw materials, thereby affecting the working efficiency of the pulverizer.

[0005] In order to solve the above problems, the utility model provides a calcium carbonate grinding machine screening device, including a box body, a screen, and a plurality of mesh holes on the screen. The screen is arranged in the box body and is used to screen the calcium carbonate raw materials entering the box body. The utility model also includes a driving assembly, which includes a rotating shaft driven by a motor to intermittently rotate and move up and down, the rotating shaft is fixed to a lever, and a plurality of insertion rods are evenly fixed on the lever. The insertion rods are inserted into the mesh holes to push out the calcium carbonate raw materials in the mesh holes, and the insertion rods are rotated after being separated from the mesh holes to move the calcium carbonate raw materials on the screen.

[0006] The calcium carbonate grinding mill screening device provided by the utility model also has the following technical features:

[0007] The bottom of the screen is coaxially fixed with the support tube, the support tube is fixed with the box body, the screen and the support tube are coaxially provided with a through hole, and a rotating shaft which moves and rotates relatively therewith is arranged in the through hole.

[0008] The output shaft of the motor is coaxially fixed with the incomplete gear, the incomplete gear can mesh with the complete gear, the complete gear is coaxially fixed with the rotating shaft, the complete gear is fixed with one end of the ejector pin, the other end of the ejector pin contacts the upper surface of the arcuate ejector block or the disc, the arcuate ejector block is fixed on the outer edge of the upper surface of the disc, and the disc is coaxially fixed with the output shaft of the motor.

[0009] The complete gear is connected with the support ring bearing and is coaxially arranged. The support ring is fixed to one end of a tension spring. The tension spring is sleeved outside the rotating shaft, and the other end of the tension spring is fixed to the bottom of the box body.

[0010] The thickness of the incomplete gear is greater than the stroke of the rotating shaft moving up and down.

[0011] The arc-shaped top block is oriented in the same direction as the teeth on the incomplete gear.

[0012] The method of "a plurality of meshes are provided on the screen" is that: a group of meshes is arranged corresponding to the number and position of the plurality of insertion rods, and the plurality of groups of meshes are arranged on the screen by rotating the group of meshes around the rotation axis multiple times at equal angles;

[0013] The intermittent rotation angle of the rotating shaft is equal to the angle between the adjacent groups of meshes.

[0014] A feeding port is provided at the bottom of the box body, and the bottom wall of the box body is inclined toward the feeding port. A collecting box is provided at the bottom of the feeding port for collecting the processed calcium carbonate raw materials falling from the feeding port.

[0015] The collection box is fixed on the bracket, the bracket is fixed to the motor, the bracket is fixed to one end of the support rod, and the other end of the support rod is fixed to the bottom of the box body.

[0016] The utility model has the following beneficial effects: the motor drives the rotating shaft to rotate intermittently and move up and down, drives the lever and the multiple insertion rods thereon to rotate intermittently and move up and down, the insertion rods are inserted into the mesh to push out the calcium carbonate raw materials in the mesh, avoids the mesh being blocked by larger calcium carbonate raw materials, and avoids affecting the working efficiency of the grinding mill; in addition, after the insertion rods are separated from the mesh, they are rotated to shift the calcium carbonate raw materials on the screen, so that smaller calcium carbonate raw materials leak from the mesh, further improving the working efficiency of the grinding mill. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional view of the utility model;

[0018] Figure 2 It is a partial axonometric drawing of the utility model. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0020] like Figure 1 to Figure 2 As shown, the calcium carbonate grinding mill screening device of the utility model includes a box body 10, a screen 11, a plurality of mesh holes 12 are formed on the screen 11, the screen 11 is arranged in the box body 10, and is used for screening the calcium carbonate raw material entering the box body 10, and also includes a driving assembly 20, which includes a rotating shaft 22 driven by a motor 21 to intermittently rotate and move up and down, the rotating shaft 22 is fixed to a lever 23, a plurality of insertion rods 24 are evenly fixed on the lever 23, the insertion rods 24 are inserted into the mesh holes 12 to push out the calcium carbonate raw material in the mesh holes 12, and the insertion rods 24 are rotated after being separated from the mesh holes 12 to move the calcium carbonate raw material on the screen 11.

[0021] The utility model drives the rotating shaft 22 to rotate intermittently and move up and down through the motor 21, so as to drive the lever 23 and the multiple insertion rods 24 thereon to rotate intermittently and move up and down. The insertion rods 24 are inserted into the mesh 12 to push out the calcium carbonate raw materials in the mesh 12, so as to avoid the mesh 12 being blocked by the larger calcium carbonate raw materials and to avoid affecting the working efficiency of the mill. In addition, after the insertion rods 24 are separated from the mesh 12, they are rotated to move the calcium carbonate raw materials on the screen 11, so that the smaller calcium carbonate raw materials leak from the mesh 12, thereby further improving the working efficiency of the mill.

[0022] The inserting rod 24 is disposed on the lower surface of the shifting rod 23 .

[0023] Preferably, the bottom of the screen 11 is coaxially fixed to the support tube 25, the support tube 25 is fixed to the box 10, the screen 11 and the support tube 25 are coaxially provided with a through hole 26, and a rotating shaft 22 is provided in the through hole 26 for relative movement and rotation.

[0024] Preferably, the output shaft of the motor 21 is coaxially fixed with the incomplete gear 27, the incomplete gear 27 can mesh with the complete gear 28, the complete gear 28 is coaxially fixed with the rotating shaft 22, the complete gear 28 is fixed to one end of the top pin 29, the other end of the top pin 29 contacts the upper surface of the arc-shaped top block 30 or the disk 31, the arc-shaped top block 30 is fixed to the outer edge of the upper surface of the disk 31, and the disk 31 is coaxially fixed with the output shaft of the motor 21.

[0025] The utility model drives the incomplete gear 27 to rotate through the output shaft of the motor 21, drives the complete gear 28 to rotate intermittently, drives the lever 23 and the multiple insertion rods 24 thereon to rotate intermittently; the output shaft of the motor 21 drives the disc 31 and the arc-shaped top block 30 thereon to rotate, and the disc 31 and the arc-shaped top block 30 thereon alternately contact the other end of the top pin 29, driving the rotating shaft 22 to reciprocate up and down.

[0026] Preferably, see Figure 1 The complete gear 28 is connected to the support ring 32 bearing and is coaxially arranged. The support ring 32 is fixed to one end of a tension spring 33. The tension spring 33 is sleeved outside the rotating shaft 22, and the other end of the tension spring 33 is fixed to the bottom of the box body 10.

[0027] Through the above arrangement, the utility model realizes that the insertion rod 24 is always in contact with the screen 11 , and the insertion rod 24 always has a tendency to be inserted into the mesh 12 .

[0028] Preferably, the thickness of the incomplete gear 27 is greater than the stroke of the rotating shaft 22 moving up and down.

[0029] Through the above arrangement, the utility model realizes that the incomplete gear 27 can always mesh with the complete gear 28, thereby avoiding failure of the connection between the two.

[0030] Preferably, see Figure 2 The arc-shaped top block 30 and the teeth on the incomplete gear 27 are oriented in the same direction.

[0031] Through the above arrangement, the utility model realizes that when the ejector pin 29 moves from the arc-shaped ejector block 30 to the upper surface of the disc 31, the teeth on the incomplete gear 27 disengage from the complete gear 28, and the insertion rod 24 is inserted into the mesh 12 to eject the calcium carbonate raw material in the mesh 12; when the ejector pin 29 moves from the upper surface of the disc 31 to the arc-shaped ejector block 30, the insertion rod 24 disengages from the mesh 12, and the teeth on the incomplete gear 27 begin to mesh with the complete gear 28, driving the lever 23 and the multiple insertion rods 24 thereon to rotate, so as to move the calcium carbonate raw material on the screen 11.

[0032] The line connecting the center of the arc-shaped top block 30 and the center of the teeth on the incomplete gear 27 is arranged along the radial direction of the disk 31 .

[0033] Preferably, see Figure 2 The method of "a plurality of meshes 12 are provided on the screen 11" is: a group of meshes 12 is arranged corresponding to the number and position of a plurality of insertion rods 24, and the plurality of groups of meshes 12 are arranged on the screen 11 by rotating the group of meshes 12 around the rotating shaft 22 for multiple times at equal angles;

[0034] The intermittent rotation angle of the rotating shaft 22 is equal to the angle between the adjacent groups of meshes 12 .

[0035] Through the above arrangement, the utility model can realize that before and after the rotating shaft 22 intermittently rotates, the inserting rod 24 on the shifting rod 23 can be inserted into the mesh 12 to push out the calcium carbonate raw material in the mesh 12.

[0036] Preferably, see Figure 1A feeding port 13 is provided at the bottom of the box body 10 , and the bottom wall of the box body 10 is inclined toward the feeding port 13 . A collecting box 14 is provided at the bottom of the feeding port 13 for collecting the processed calcium carbonate raw materials falling from the feeding port 13 .

[0037] Preferably, see Figure 1 The collection box 14 is fixed on the bracket 15 , the bracket 15 is fixed to the motor 21 , the bracket 15 is fixed to one end of the support rod 16 , and the other end of the support rod 16 is fixed to the bottom of the box body 10 .

[0038] The working principle of the utility model is as follows:

[0039] First, the calcium carbonate raw material to be screened is put into the box 10 from the top, and the motor 21 is started. The output shaft of the motor 21 drives the incomplete gear 27 to rotate, drives the complete gear 28 to rotate intermittently, and drives the lever 23 and the multiple insertion rods 24 thereon to rotate intermittently; the output shaft of the motor 21 drives the disc 31 and the arc-shaped top block 30 thereon to rotate, and the disc 31 and the arc-shaped top block 30 thereon alternately contact the other end of the top pin 29, driving the rotating shaft 22 to move up and down reciprocatingly;

[0040] Specifically, when the ejector pin 29 moves from the arc-shaped ejector block 30 to the upper surface of the disc 31, the teeth on the incomplete gear 27 are disengaged from the complete gear 28. Under the action of the tension spring 33, the rotating shaft 22 and the lever 23 drive the insertion rod 24 to insert into the mesh 12 to eject the calcium carbonate raw material in the mesh 12, thereby preventing the mesh 12 from being blocked by the larger calcium carbonate raw material and affecting the working efficiency of the mill.

[0041] When the top pin 29 moves from the upper surface of the disc 31 to the arc-shaped top block 30, the insertion rod 24 is separated from the mesh 12, and the teeth on the incomplete gear 27 begin to mesh with the complete gear 28, driving the lever 23 and the multiple insertion rods 24 thereon to rotate, so as to move the calcium carbonate raw materials on the screen 11, so that the smaller calcium carbonate raw materials leak from the mesh 12, further improving the working efficiency of the mill;

[0042] According to this cycle, the insertion rod 24 on the push rod 23 is inserted into a plurality of meshes 12 formed by a group of meshes 12 in turn, so as to gradually push out the calcium carbonate raw materials in the plurality of meshes 12 .

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A calcium carbonate grinding mill screening device, comprising a housing (10), a screen (11), the screen (11) being provided with a plurality of mesh holes (12), the screen (11) being arranged in the housing (10) and used for screening calcium carbonate raw materials entering the housing (10), characterized in that: The invention also comprises a driving assembly (20), which comprises a rotating shaft (22) driven by a motor (21) to intermittently rotate and move up and down, the rotating shaft (22) being fixed to a lever (23), a plurality of insertion rods (24) being evenly fixed on the lever (23), the insertion rods (24) being inserted into the mesh (12) to push out the calcium carbonate raw material in the mesh (12), and the insertion rods (24) being rotated after being separated from the mesh (12) to move the calcium carbonate raw material on the screen (11).

2. The calcium carbonate grinding mill screening device according to claim 1, characterized in that: The bottom of the screen (11) is coaxially fixed to the support cylinder (25), the support cylinder (25) is fixed to the box body (10), the screen (11) and the support cylinder (25) are coaxially provided with a through hole (26), and a rotating shaft (22) is provided in the through hole (26) for relative movement and rotation.

3. The calcium carbonate grinding mill screening device according to claim 2, characterized in that, The output shaft of the motor (21) is coaxially fixed to the incomplete gear (27), the incomplete gear (27) can mesh with the complete gear (28), the complete gear (28) is coaxially fixed to the rotating shaft (22), the complete gear (28) is fixed to one end of a top pin (29), the other end of the top pin (29) is in contact with the upper surface of an arc-shaped top block (30) or a disc (31), the arc-shaped top block (30) is fixed to the outer edge of the upper surface of the disc (31), and the disc (31) is coaxially fixed to the output shaft of the motor (21).

4. The calcium carbonate grinding mill screening device according to claim 3, characterized in that: The complete gear (28) is connected to the support ring (32) bearing and is coaxially arranged. The support ring (32) is fixed to one end of a tension spring (33). The tension spring (33) is sleeved outside the rotating shaft (22). The other end of the tension spring (33) is fixed to the bottom of the box body (10).

5. The calcium carbonate grinding mill screening device according to claim 3, characterized in that: The thickness of the incomplete gear (27) is greater than the stroke of the rotating shaft (22) moving up and down.

6. The calcium carbonate grinding mill screening device according to claim 3, characterized in that: The arc-shaped top block (30) and the teeth on the incomplete gear (27) are oriented in the same direction.

7. The calcium carbonate grinding mill screening device according to claim 1, characterized in that: The screen (11) is provided with a plurality of mesh holes (12) in such a manner that: a group of mesh holes (12) is arranged corresponding to the number and position of a plurality of insertion rods (24), and the plurality of groups of mesh holes (12) are arranged on the screen (11) by rotating the group of mesh holes (12) around a rotation axis (22) at equal angles for a plurality of times; The intermittent rotation angle of the rotating shaft (22) is equal to the angle between adjacent groups of mesh holes (12).

8. The calcium carbonate grinding mill screening device according to claim 1, characterized in that: The bottom of the box body (10) is provided with a feed opening (13), the bottom wall of the box body (10) is arranged to be inclined toward the feed opening (13), and the bottom of the feed opening (13) is provided with a collecting box (14) for collecting the fully processed calcium carbonate raw material falling from the feed opening (13).

9. The calcium carbonate grinding mill screening device according to claim 8, characterized in that: The collection box (14) is fixed on the bracket (15), the bracket (15) is fixed to the motor (21), the bracket (15) is fixed to one end of the support rod (16), and the other end of the support rod (16) is fixed to the bottom of the box body (10).

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