Anti-blocking bentonite grinding mill

Abstract

The present disclosure relates to the technical field of bentonite processing, and one embodiment of the present disclosure provides an anti-blocking bentonite grinding machine, which comprises a Raymond grinding machine body and a butt joint pipeline, the butt joint pipeline is connected to the air inlet end at the bottom of the Raymond grinding machine body, a filtering and heating assembly is arranged in the butt joint pipeline, a heating and heat preservation assembly is arranged outside the Raymond grinding machine body, the heating and heat preservation assembly comprises a jacket layer, the jacket layer is fixedly attached around the outer surface of the air inlet part of the Raymond grinding machine body, one end of the jacket layer is provided with an air inlet pipeline, the other end of the jacket layer is provided with an air outlet pipeline, and a plurality of first heating pipes are arranged in the jacket layer. Through the above technical scheme, the technical problem that when the mixture flows through the conveying pipeline with low temperature, the steam is rapidly condensed, the dry bentonite powder is re-hydrated and caked, and the caked bentonite powder is attached to the inner wall of the pipeline to cause blockage is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of bentonite processing, and more specifically, to an anti-clogging bentonite grinding mill. Background Technology

[0002] In the field of bentonite deep processing, grinding mills are key equipment for grinding blocky or granular bentonite into fine powder (commonly 200-500 mesh). The ground bentonite fine powder is widely used in cat litter, coatings, drilling mud, and other fields. The fineness and flowability of the powder directly determine the application performance of the product. However, bentonite has strong hygroscopicity. Even after pretreatment, the raw material will still contain 3%-8% moisture. Moreover, traditional bentonite grinding mills generally do not have heating and heat preservation functions. During the grinding process, the moisture in the raw material evaporates when heated, and when it cools down, it easily condenses into wet powder on the inner wall of the pipe, causing pipe blockage and seriously restricting production efficiency and equipment stability. Traditional grinding mills have grinding chambers and conveying pipes designed for ambient temperature. During grinding, the heat generated by mechanical friction causes the moisture in the bentonite to evaporate, forming a powder-gas mixture containing moist steam. When this mixture flows through the cooler conveying pipes, the steam rapidly condenses, causing the dry bentonite powder to reabsorb moisture and clump together, adhering to the inner wall of the pipes. As the clumps accumulate, the pipe cross-section gradually shrinks, leading to anything from slower powder flow and reduced production capacity to complete pipe blockage, requiring shutdown and pipe disassembly for cleaning. Frequent shutdowns not only interrupt production but also increase labor maintenance costs. Therefore, developing a bentonite grinding mill with heating and insulation functions and the ability to prevent pipeline blockage has become an urgent need for the industry to solve production pain points and improve equipment stability. Utility Model Content

[0003] To overcome the above-mentioned defects, the embodiments of this disclosure provide an anti-clogging bentonite grinding mill, which solves the technical problem in the prior art where, when the mixture flows through a low-temperature conveying pipe, the steam quickly condenses, causing the dry bentonite fine powder to reabsorb moisture and clump together, adhering to the inner wall of the pipe and causing blockage.

[0004] According to one aspect, at least one embodiment of this disclosure provides an anti-clogging bentonite grinding mill, comprising: The Raymond mill body and the connecting pipe, wherein the connecting pipe is connected to the air inlet end at the bottom of the Raymond mill body; A filter heating assembly is disposed in the docking pipe; A heating and insulation component is disposed on the outside of the Raymond mill body; The heating and insulation component includes an outer jacket layer, which is attached and fixed around the outer surface of the air inlet section of the Raymond mill body. An air inlet pipe is provided on one side surface of the outer jacket layer, and an air outlet pipe is provided on the other side surface of the outer jacket layer. Several first heating tubes are provided inside the outer jacket layer.

[0005] As a further technical solution, a pair of first insulation covers and a second insulation cover are respectively fitted and connected to the outside of the Raymond mill body. The first insulation covers and the second insulation covers are fixedly connected by bolts. One end of the air outlet pipe is connected to one of the first insulation covers.

[0006] As a further technical solution, both the first and second insulation covers are provided with a circulation partition, and a connecting pipe is provided between the first and second insulation covers. One of the second insulation covers is provided with an exhaust pipe at the top. Both the first and second insulation covers are made of insulation material.

[0007] According to another aspect, in at least one embodiment of the present invention, the filter heating assembly includes a mounting groove, which is formed on the surface of the docking pipe. The mounting groove has a U-shaped opening structure, and a filter screen is inserted and connected inside the mounting groove.

[0008] As a further technical solution, the filter screen is sealed and fitted to the inner wall of the mounting groove, and two sets of second heating tubes are provided in the docking pipe, with the two sets of second heating tubes located on both sides of the filter screen respectively.

[0009] As a further technical solution, the top and bottom of the filter screen are provided with protrusions, and the upper and lower surfaces of the docking pipe are rotatably connected to limit rods by pins, with the limit rods fitting against the side end faces of the protrusions.

[0010] As a further technical solution, the first heating tube corresponds to the connection position of the air inlet pipe and the air outlet pipe respectively.

[0011] As a further technical solution, the circulating partition is spiral in shape and is located around the outer wall of the Raymond mill body.

[0012] The beneficial effects of the embodiments disclosed herein are as follows: In this disclosure, the heating and insulation component solves the problem of bentonite clumping due to low-temperature moisture absorption through a layered circulating insulation design. The outer layer, together with the first and second insulation covers, envelops the main body, forming an all-around insulation structure. After hot air enters through the air inlet pipe, the first heating pipe provides supplemental heating, and then the circulating layer evenly covers the main body, preventing localized excessively low temperatures. The spiral circulating layer extends the hot air path, improving insulation efficiency. This structure maintains a stable high-temperature environment for the main body, preventing the fine bentonite powder from clumping upon cooling after grinding, avoiding pipe blockage, reducing downtime for cleaning, ensuring continuous grinding, adapting to the strong hygroscopic properties of bentonite, and improving production efficiency and equipment stability. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0014] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure; Figure 2 This is an isometric sectional view of the present disclosure; Figure 3 This is another isometric sectional view from which this disclosure is presented; Figure 4 Appendix to this disclosure Figure 2 Enlarged view of part A in the middle; In the diagram: 1. Raymond mill main body; 2. Connecting pipe; 3. Heating and insulation components; 3-1. Outer jacket; 3-2. Air inlet pipe; 3-3. Air outlet pipe; 3-4. First heating tube; 3-5. First insulation cover; 3-6. Second insulation cover; 3-7. Circulation partition; 3-8. Connecting pipe; 3-9. Exhaust pipe; 4. Filter heating components; 4-1. Mounting groove; 4-2. Filter screen; 4-3. Second heating tube; 4-4. Protrusion; 4-5. Limiting rod. Detailed Implementation

[0015] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0016] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0017] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0018] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0019] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0020] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] like Figures 1-4 As shown, it illustrates an anti-clogging bentonite grinding mill according to an embodiment of the present disclosure, comprising: Raymond mill body 1 and connecting pipe 2, wherein the connecting pipe 2 is connected to the air inlet end at the bottom of Raymond mill body 1; A filter heating assembly 4 is disposed in the docking pipe 2; Heating and heat preservation component 3, which is disposed on the outside of the Raymond mill body 1; The heating and insulation component 3 includes an outer jacket 3-1, which is fitted and fixed around the outer surface of the air inlet section of the Raymond mill body 1. An air inlet pipe 3-2 is provided on one side surface of the outer jacket 3-1, and an air outlet pipe 3-3 is provided on the other side surface. Several first heating tubes 3-4 are disposed inside the outer jacket 3-1. A pair of first insulation covers 3-5 and a second insulation cover 3-6 are respectively fitted and connected to the outside of the Raymond mill body 1. The first insulation covers 3-5 are spaced apart by a... The first and second insulation covers 3-6 are fixedly connected by bolts. One end of the air outlet pipe 3-3 is connected to one of the first insulation covers 3-5. Both the first insulation cover 3-5 and the second insulation cover 3-6 are provided with circulation partitions 3-7. A connecting pipe 3-8 connects the first insulation cover 3-5 and the second insulation cover 3-6. An exhaust pipe 3-9 is provided on the top of one of the second insulation covers 3-6. Both the first insulation cover 3-5 and the second insulation cover 3-6 are made of insulation material.

[0022] In some examples, to achieve comprehensive insulation and temperature compensation for the Raymond mill body 1, prevent bentonite from clumping due to low temperature and moisture, thus avoiding mill blockage and ensuring continuous and stable grinding operations, a heating and insulation component 3 is designed. This component includes an outer jacket 3-1 that is fixedly attached to the outer surface of the air inlet section of the Raymond mill body 1. It is made of a high-temperature resistant and highly airtight material, which can tightly wrap the air inlet section of the body to reduce heat loss. The air inlet pipe 3-2 at one end of the outer jacket 3-1 can be connected to an external heat source (such as a hot air furnace or hot air blower) to provide a heat source for circulating heating. The air outlet pipe 3-3 at the other end is connected to one of the first insulation covers 3-5 to form a hot air conveying channel. Several first heating tubes 3-4 evenly distributed inside the outer jacket 3-1 can reheat the hot air entering the outer jacket 3-1 to ensure that the hot air temperature meets the insulation requirements and prevent the hot air temperature from dropping during the conveying process.

[0023] The Raymond mill body 1 is externally fitted with a pair of first insulation covers 3-5 and second insulation covers 3-6, which are fixedly connected by bolts to form a detachable structure, facilitating equipment maintenance and repair; both are made of high-density insulation materials (such as rock wool and aluminum silicate wool), which can form a layered insulation wrap from the middle and top of the body to reduce heat exchange between the body and the outside.

[0024] The circulation partition 3-7 inside the first insulation cover 3-5 and the second insulation cover 3-6 provides space for hot air circulation. The hot air transported by the air outlet pipe 3-3 enters the circulation partition 3-7 of the first insulation cover 3-5 and then flows into the circulation partition 3-7 of the second insulation cover 3-6 through the connecting pipe 3-8, so as to achieve uniform distribution of hot air in each insulation cover and to simultaneously insulate different areas of the main body, avoiding local temperature drops that could cause bentonite to clump. One of the exhaust pipes 3-9 on the top of the second insulation cover 3-6 can discharge the hot air that has completed the circulation, forming a complete hot air circulation process of air intake, heating, circulating insulation and exhaust, ensuring that the main body is always in a stable high temperature environment, adapting to the moisture-absorbing properties of bentonite, and preventing blockage during the grinding process. During operation, external hot air enters the outer jacket 3-1 through the inlet pipe 3-2. After being heated by the first heating pipe 3-4, the hot air enters the first insulation cover 3-5 and the circulation layer 3-7 through the outlet pipe 3-3, and then flows into the second insulation cover 3-6 and the circulation layer 3-7 through the connecting pipe 3-8, providing all-around insulation for the main body. Finally, it is discharged from the exhaust pipe 3-9. The synergistic effect of circulating hot air and layered insulation ensures stable main body temperature, effectively prevents bentonite blockage, and improves grinding efficiency.

[0025] like Figures 1-4 As shown in the figure, the filter heating assembly 4 in this embodiment includes a mounting groove 4-1, which is formed on the surface of the docking pipe 2. The mounting groove 4-1 has a U-shaped opening structure. A filter screen 4-2 is inserted and connected in the mounting groove 4-1. The filter screen 4-2 is sealed and fitted to the inner wall of the mounting groove 4-1. Two sets of second heating tubes 4-3 are provided in the docking pipe 2. The two sets of second heating tubes 4-3 are respectively located on both sides of the filter screen 4-2. Protrusions 4-4 are provided at the top and bottom of the filter screen 4-2. Limiting rods 4-5 are rotatably connected to the upper and lower surfaces of the docking pipe 2 through pins. The limiting rods 4-5 are attached to the side end faces of the protrusions 4-4.

[0026] In some examples, to purify and heat the air entering the Raymond mill body 1, prevent impurities in the air from clogging the internal channels of the mill, and reduce air humidity by heating to prevent bentonite from becoming damp and clumping, thus providing a pre-emptive guarantee against clogging, a filter heating component 4 is designed. This component has a U-shaped mounting groove 4-1 on the surface of the connecting pipe 2, with the opening facing outwards, which facilitates the insertion and removal of the filter screen 4-2, and makes it easy to clean or replace the filter screen 4-2 regularly, avoiding filter screen clogging that affects air intake efficiency. The filter screen 4-2 inserted in the mounting groove 4-1 is sealed and fitted to the inner wall of the mounting groove 4-1. It is made of high-density metal mesh or filter cloth material, which can intercept dust, particles and other impurities in the air, preventing impurities from entering the body with the air and adhering to the surface of the grinding roller and grinding ring, affecting grinding accuracy, or clogging the discharge channel.

[0027] The two sets of second heating tubes 4-3 inside the connecting pipe 2 are located on both sides of the filter screen 4-2, symmetrically distributed and fixed to the inner wall of the pipe by brackets. The second heating tube 4-3 on the air inlet side of the filter screen 4-2 can preheat the incoming cold air, increase the air temperature, reduce the relative humidity of the air, and reduce the contact between the moisture in the air and the bentonite. The second heating tube 4-3 on the air outlet side of the filter screen 4-2 can reheat the filtered air, further increase the air temperature, and ensure that the air temperature entering the main body meets the process requirements, avoiding the internal temperature drop of the main body caused by low temperature air, which may lead to bentonite agglomeration. The dual-stage heating design makes the air temperature rise more evenly, avoids local temperature being too high or too low, and ensures stable heating effect.

[0028] The protrusions 4-4 on the top and bottom of the filter screen 4-2 provide positioning support for the limiting rod 4-5. The limiting rod 4-5, which is rotatably connected to the upper and lower surfaces of the connecting pipe 2 by a pin, can rotate around the pin to a position that fits the side end face of the protrusion 4-4, thus limiting and fixing the filter screen 4-2 and preventing it from shifting or falling off under the impact of airflow. When it is necessary to disassemble the filter screen 4-2, simply rotate the limiting rod 4-5 to disengage it from the protrusion 4-4, which is convenient to operate.

[0029] During operation, the air is first preheated by the second heating pipe 4-3 on the intake side, then filtered for impurities by the filter screen 4-2, and finally reheated by the second heating pipe 4-3 on the outlet side before entering the main body. The filtration and heating work together to purify the intake air and reduce humidity, effectively preventing blockages and ensuring the stable operation of the grinding mill.

[0030] For example, such as Figure 2 As shown, the first heating tube 3-4 corresponds to the connection position of the air inlet pipe 3-2 and the air outlet pipe 3-3, respectively.

[0031] In some examples, the first heating tube 3-4 corresponds to the connection positions of the air inlet pipe 3-2 and the air outlet pipe 3-3, respectively. This design enables precise temperature control of the hot air entering and exiting the outer jacket 3-1. The first heating tube 3-4 at the air inlet pipe 3-2 can directly and quickly heat the newly entering external hot air, preventing low-temperature hot air from flowing directly into the subsequent insulation structure and causing heat loss. The first heating tube 3-4 at the air outlet pipe 3-3 can provide secondary heating for the hot air about to enter the first insulation cover 3-5, ensuring that the temperature of the hot air always meets the insulation requirements and preventing the temperature of the hot air from dropping during the flow through the outer jacket 3-1.

[0032] For example, such as Figure 3 As shown, the circulating partitions 3-7 are spirally arranged around the outer wall of the Raymond mill body 1.

[0033] In some examples, the circulating partitions 3-7 are arranged in a spiral shape around the outer wall of the Raymond mill body 1. This structure significantly extends the flow path of hot air within the partitions, allowing the hot air to fully contact the outer wall of the body and improving heat transfer efficiency. The spiral design also ensures that hot air evenly covers every area of ​​the outer wall of the body, avoiding localized hot air stagnation or excessively rapid flow caused by traditional straight-channel partitions, and preventing localized temperature differences within the body.

[0034] In actual use: Connect the Raymond mill body 1 to the docking pipe 2. Rotate the limiting rod 4-5 to disengage it from the protrusion 4-4 of the filter screen 4-2. Remove the filter screen 4-2 from the mounting slot 4-1 for cleaning or replacement. After resetting, rotate the limiting rod 4-5 to fit the protrusion 4-4 for fixation. Start the filter heating assembly 4. The two sets of second heating tubes 4-3 in the docking pipe 2 begin heating. External air is first heated by the heating tube on the air inlet side, then filtered for impurities by the filter screen 4-2, and finally heated a second time by the heating tube on the air outlet side before entering the main body. At the same time, start the heating and insulation assembly 3. External hot air enters the outer jacket 3-1 through the air inlet pipe 3-2. The first heating tube 3-4 replenishes the temperature of the hot air. The hot air flows into the circulation partition 3-7 of the first insulation cover 3-5 through the air outlet pipe 3-3, and then enters the circulation partition 3-7 of the second insulation cover 3-6 through the connecting pipe 3-8, providing all-round insulation for the main body. The hot air that has completed circulation is discharged from the exhaust pipe 3-9. When the Raymond mill body 1 grinds bentonite, the heating and insulation component 3 maintains the body temperature stably, and the filter heating component 4 ensures that the intake air is dry and clean, preventing the bentonite from absorbing moisture, clumping and clogging the equipment throughout the process.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A clog-resistant bentonite grinding mill, characterized in that, include: Raymond mill body (1) and connecting pipe (2), wherein the connecting pipe (2) is connected to the air inlet end at the bottom of Raymond mill body (1); A filter heating assembly (4) is disposed in the docking pipe (2); Heating and heat preservation component (3), wherein the heating and heat preservation component (3) is disposed outside the Raymond mill body (1); The heating and heat preservation component (3) includes an outer jacket (3-1), which is attached and fixed around the outer surface of the air inlet section of the Raymond mill body (1). An air inlet pipe (3-2) is provided on one side surface of the outer jacket (3-1), and an air outlet pipe (3-3) is provided on the other side surface of the outer jacket (3-1). Several first heating tubes (3-4) are provided inside the outer jacket (3-1).

2. The anti-clogging bentonite grinding mill according to claim 1, characterized in that, The Raymond mill body (1) is fitted with a pair of first insulation covers (3-5) and second insulation covers (3-6) respectively. The first insulation covers (3-5) and the second insulation covers (3-6) are fixedly connected by bolts. One end of the air outlet pipe (3-3) is connected to one of the first insulation covers (3-5).

3. The anti-clogging bentonite grinding mill according to claim 2, characterized in that, Both the first heat insulation cover (3-5) and the second heat insulation cover (3-6) are provided with a circulation partition (3-7), and a connecting pipe (3-8) connects the first heat insulation cover (3-5) and the second heat insulation cover (3-6). One of the second heat insulation covers (3-6) is provided with an exhaust pipe (3-9) at the top. Both the first heat insulation cover (3-5) and the second heat insulation cover (3-6) are made of heat insulation material.

4. The anti-clogging bentonite grinding mill according to claim 1, characterized in that, The filter heating assembly (4) includes a mounting groove (4-1), which is formed on the surface of the docking pipe (2). The mounting groove (4-1) has a U-shaped opening structure, and a filter screen (4-2) is inserted and connected inside the mounting groove (4-1).

5. The anti-clogging bentonite grinding mill according to claim 4, characterized in that, The filter screen (4-2) is sealed and fitted to the inner wall of the mounting groove (4-1). Two sets of second heating tubes (4-3) are provided in the docking pipe (2), and the two sets of second heating tubes (4-3) are located on both sides of the filter screen (4-2).

6. The anti-clogging bentonite grinding mill according to claim 5, characterized in that, The filter screen (4-2) is provided with protrusions (4-4) at the top and bottom. The upper and lower surfaces of the connecting pipe (2) are rotatably connected to limit rods (4-5) by pins. The limit rods (4-5) are attached to the side end face of the protrusions (4-4).

7. The anti-clogging bentonite grinding mill according to claim 1, characterized in that, The first heating tube (3-4) corresponds to the connection position of the air inlet pipe (3-2) and the air outlet pipe (3-3).

8. The anti-clogging bentonite grinding mill according to claim 3, characterized in that, The circulating partitions (3-7) are spiral in shape and are located around the outer wall of the Raymond mill body (1).

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