A calcium carbonate grinding classification structure

Abstract

The utility model relates to calcium carbonate grinding technical field, and disclose a kind of calcium carbonate grinding grading structure, including grinding cylinder, top is equipped with feed hopper and built-in crushing roller and carries out preliminary crushing, bottom is equipped with discharge port.Grinding cavity is equipped with support rod, and it is installed with the grading filter screen of upward convex cambered surface shape on it, and the calcium carbonate after crushing is classified.Larger particles are guided to fixed roller by upper grading filter screen, and are ground by grinding roller with tooth slot;Smaller particles are further filtered and ground by lower grading filter screen.Electric motor driving gear is engaged with the tooth slot on grinding roller, and drives grinding roller to rotate.This design realizes the preliminary crushing and grading grinding of calcium carbonate, improves grinding efficiency and quality, and avoids the problem of excessive wear caused by material particle size mismatch of grinding equipment.

Description

Technical Field

[0001] This utility model relates to the field of calcium carbonate grinding technology, specifically a calcium carbonate grinding and grading structure. Background Technology

[0002] In the processing of calcium carbonate, grinding is a crucial step, as its effectiveness directly affects the quality of the calcium carbonate product and its subsequent applications.

[0003] Existing calcium carbonate grinding technologies typically lack preliminary crushing of calcium carbonate, leading to significant particle size variations during subsequent grinding and impacting overall grinding efficiency. Furthermore, most existing grinding structures do not perform classification processing on the crushed calcium carbonate; grinding calcium carbonate of different sizes together not only fails to ensure adequate grinding of all particle sizes, affecting grinding quality, but also results in a mismatch between the calcium carbonate size and the grinding equipment, leading to excessive wear on the equipment. Therefore, those skilled in the art have provided a calcium carbonate grinding classification structure to address the problems mentioned in the background. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a calcium carbonate grinding and grading structure to solve the problem that existing calcium carbonate grinding equipment usually lacks preliminary crushing treatment of calcium carbonate, and most existing grinding structures do not perform grading treatment on the crushed calcium carbonate, which easily leads to the problem of excessive wear of the grinding equipment due to the mismatch between the size of the calcium carbonate and the grinding equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a calcium carbonate grinding and grading structure, comprising a grinding cylinder, a feed hopper at the top of the grinding cylinder, a discharge port at the bottom of the grinding cylinder, a crushing roller on the lower side of the feed hopper, a grinding chamber inside the grinding cylinder located below the crushing roller, a support rod vertically mounted in a ring shape in the middle of the grinding chamber, a grading filter screen mounted on the support rod, a fixed roller mounted around the grading filter screen, a grinding roller sleeved around the fixed roller, a toothed groove on the outer wall of the grinding roller, retaining rings mounted on both sides of the upper side of the toothed groove, a motor mounted on the outer wall of the grinding cylinder, and a gear connected to the output end of the motor.

[0006] Preferably, the graded filter screen has an upwardly convex arc shape, which facilitates the diversion of crushed calcium carbonate.

[0007] Preferably, the connection between the discharge port and the grinding chamber is bucket-shaped.

[0008] Preferably, the toothed grooves are arranged in a ring array on the periphery of the grinding roller.

[0009] Preferably, the gear penetrates the wall of the grinding cylinder and engages with the tooth groove. When the motor starts, the gear rotates, which in turn drives the grinding roller to rotate, thus starting the grinding operation.

[0010] Preferably, a support is installed at the bottom of the grinding cylinder.

[0011] Compared with the prior art, the present invention provides a calcium carbonate grinding and grading structure, which has the following beneficial effects:

[0012] By designing a crushing roller below the feed hopper, the calcium carbonate is pre-crushed, preparing it for subsequent grinding and improving overall grinding efficiency. A support rod and two grading filters are installed inside the grinding chamber to classify the crushed calcium carbonate. Larger particles are first guided by the upper grading filter to the fixed roller for grinding, while smaller particles are further filtered by the lower grading filter before being ground by their corresponding grinding roller. This graded grinding ensures that calcium carbonate of different sizes is fully ground, improving grinding quality and avoiding excessive wear on the grinding equipment caused by a mismatch between the size of the calcium carbonate and the grinding equipment. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a calcium carbonate grinding and grading structure provided in an embodiment of this application.

[0014] Figure 2 This is a cross-sectional view of the grinding cylinder in a calcium carbonate grinding and grading structure provided in an embodiment of this application.

[0015] Figure 3 This is a cross-sectional view of the graded filter screen in a calcium carbonate grinding and grading structure provided in an embodiment of this application.

[0016] Figure 4 This is a cross-sectional view of the grinding roller in a calcium carbonate grinding and grading structure provided in an embodiment of this application.

[0017] In the diagram: 1. Grinding cylinder; 2. Feed hopper; 3. Discharge port; 4. Crushing roller; 5. Motor; 6. Gear; 7. Support; 8. Grinding chamber; 9. Support rod; 10. Grading filter; 11. Fixed roller; 12. Grinding roller; 13. Snap ring; 14. Tooth groove. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] This utility model provides a technical solution, a calcium carbonate grinding and grading structure. Please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 and Figure 4 The grinding cylinder includes a grinding cylinder 1, a feed hopper 2 at the top of the grinding cylinder 1, a discharge port 3 at the bottom of the grinding cylinder 1, a crushing roller 4 at the lower side of the feed hopper 2, a grinding chamber 8 inside the grinding cylinder 1, the grinding chamber 8 being located below the crushing roller 4, a support rod 9 being vertically installed in a ring shape in the middle of the grinding chamber 8, a grading filter 10 being installed on the support rod 9, a fixed roller 11 being installed around the grading filter 10, a grinding roller 12 being sleeved around the fixed roller 11, a toothed groove 14 being opened on the outer wall of the grinding roller 12, retaining rings 13 being installed on both sides of the upper side of the toothed groove 14, a motor 5 being installed on the outer wall of the grinding cylinder 1, and a gear 6 being driven and connected to the output end of the motor 5.

[0020] The grading filter 10 has an upwardly convex arc shape, which facilitates the diversion of crushed calcium carbonate. The discharge port 3 is shaped like a bucket where it connects with the grinding chamber 8. The toothed grooves 14 are arranged in a ring array on the periphery of the grinding roller 12. The gear 6 penetrates the wall of the grinding cylinder 1 and meshes with the toothed grooves 14. When the motor 5 starts, the gear 6 rotates, which drives the grinding roller 12 to rotate, and then the grinding work begins. A bracket 7 is installed at the bottom of the grinding cylinder 1.

[0021] The working principle of this device is as follows: A feed hopper 2 is opened at the top of the grinding cylinder 1, and a crushing roller 4 is set below the feed hopper 2 to initially crush the calcium carbonate fed into the feed hopper 2. The crushed calcium carbonate falls into the grinding chamber 8 inside the grinding cylinder 1. A support rod 9 is vertically installed in the middle of the grinding chamber 8, and two grading screens 10 are installed on the support rod 9 from top to bottom. A fixed roller 11 is installed on the periphery of each grading screen 10. The fixed roller 11 is annular, and a grinding roller 12 is set on the periphery of the fixed roller 11. A retaining ring 13 is installed on the outer wall of the grinding roller 12. The retaining ring 13 can be rotated and engaged with the inner wall of the grinding cylinder 1. A toothed groove 14 is opened on the outer wall of the grinding roller 12. The toothed groove 14 is arranged in a ring array. A motor 5 is installed on the outer wall of the grinding cylinder 1. A gear 6 is installed at the output end of the motor 5. The gear 6 penetrates the cylinder wall of the grinding cylinder 1 and meshes with the toothed groove 14. When the motor 5 is started, the gear 6 rotates and drives the grinding roller 12 to rotate.

[0022] When the broken calcium carbonate falls onto the upper grading filter 10, the larger calcium carbonate particles fall onto the fixed roller 11 along with the curved surface of the grading filter 10. As the grinding roller 12 around the fixed roller 11 rotates, it is ground. As the larger calcium carbonate particles are filtered, the remaining calcium carbonate is filtered again by the lower grading filter 10, and then ground by the fixed roller 11 and grinding roller 12 around the lower grading filter 10. This structure achieves the effect of grading and grinding, and the larger calcium carbonate particles fall into the lower grinding assembly after being ground above, which can avoid the problem of excessive wear caused by the grinding assembly encountering calcium carbonate of mismatched specifications.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] In this document, unless otherwise expressly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A calcium carbonate grinding and grading structure, comprising a grinding cylinder (1), characterized in that: The grinding cylinder (1) has a feed hopper (2) at the top and a discharge port (3) at the bottom. A crushing roller (4) is provided on the lower side of the feed hopper (2). A grinding chamber (8) is provided inside the grinding cylinder (1) and is located below the crushing roller (4). A support rod (9) is vertically installed in a ring shape in the middle of the grinding chamber (8). A grading filter (10) is installed on the support rod (9). A fixed roller (11) is installed on the periphery of the grading filter (10). A grinding roller (12) is sleeved on the periphery of the fixed roller (11). A toothed groove (14) is provided on the outer wall of the grinding roller (12). A retaining ring (13) is installed on both sides of the upper side of the toothed groove (14). A motor (5) is installed on the outer wall of the grinding cylinder (1). A gear (6) is driven by the output end of the motor (5).

2. The calcium carbonate grinding and grading structure according to claim 1, characterized in that: The graded filter (10) has an upwardly convex arc shape.

3. The calcium carbonate grinding and grading structure according to claim 1, characterized in that: The outlet (3) is connected to the grinding chamber (8) in a bucket shape.

4. The calcium carbonate grinding and grading structure according to claim 1, characterized in that: The toothed grooves (14) are arranged in a ring array on the periphery of the grinding roller (12).

5. The calcium carbonate grinding and grading structure according to claim 1, characterized in that: The gear (6) penetrates the wall of the grinding cylinder (1) and then meshes with the tooth groove (14).

6. The calcium carbonate grinding and grading structure according to claim 1, characterized in that: A bracket (7) is installed at the bottom of the grinding cylinder (1).

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