Vertical stirring and grinding equipment for coal water slurry

Abstract

The invention relates to the technical field of mineral processing, in particular to vertical stirring and grinding equipment for coal water slurry. The coal water slurry vertical stirring and grinding equipment comprises a containing assembly, a grinding assembly, a power assembly and a filtering and flow collecting assembly, the containing assembly is provided with a grinding cavity, the grinding cavity is a regular octagonal prism extending in the vertical direction, and the grinding cavity is provided with two sets of oppositely-arranged discharging openings; each group of discharge ports comprises three discharge ports which are respectively formed in three connected side walls of the grinding cavity, the grinding assembly is arranged in the grinding cavity, the power assembly can drive the grinding assembly to rotate around a vertical shaft, the filtering and flow collecting assembly comprises two groups of filtering and flow collecting structures, each group of filtering and flow collecting structures is arranged corresponding to one group of discharge ports, and the filtering and flow collecting structures are arranged in the grinding cavity. Each group of filtering and collecting structures comprises a collecting cabin, a screen and a discharging pipe, the collecting cabin is provided with a collecting cavity, the collecting cavity is communicated with one group of discharging openings at the same time, each discharging opening in the group of discharging openings is blocked by the screen, and the discharging pipe is used for conveying the coal water slurry in the collecting cavity to the collecting cabin.

Description

Technical Field

[0001] This invention relates to the field of mineral processing technology, and more particularly to a vertical mixing and grinding equipment for coal-water slurry. Background Technology

[0002] Coal-water slurry (CWS) is a solid-liquid two-phase fluid fuel made from approximately 60-70% pulverized coal, 29-39% water, and about 1% chemical additives through a specific process. It possesses petroleum-like fluidity, allowing for pumping, atomization, and stable combustion, earning it the nickname "liquid coal." As a clean coal-based fuel, coal-water slurry technology is of great significance for the clean and efficient utilization of coal, replacing fuel oil, and reducing pollutant emissions.

[0003] The preparation process of coal-water slurry mainly includes crushing, grinding, mixing, and shearing homogenization. Among these, grinding is the most critical step in determining the particle size distribution (gradation) and morphology of the coal powder. The ideal particle size distribution is that large particles fill the gaps, medium particles act as intermediaries, and small particles fill the micro-gaps, achieving the closest possible packing of particles. This is essential for producing high-concentration, low-viscosity coal-water slurry. Furthermore, the quality of the coal-water slurry directly determines its combustion efficiency and environmental performance. Existing grinding equipment suffers from low grinding efficiency and poor grinding effect. In addition, existing grinding equipment has few outlets, making discharge difficult and prone to blockage.

[0004] Therefore, there is an urgent need to invent a vertical mixing and grinding equipment for coal-water slurry to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a vertical mixing and grinding equipment for coal-water slurry, so as to improve the grinding effect and grinding efficiency of coal-water slurry and increase the discharge efficiency of coal-water slurry.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Vertical mixing and grinding equipment for coal-water slurry includes:

[0008] The assembly includes a grinding chamber, which is a regular octagonal prism extending vertically. The grinding chamber has two sets of opposite discharge ports, each set of discharge ports including three discharge ports respectively disposed on three side walls connected to the grinding chamber.

[0009] The powertrain is mounted on the housing assembly;

[0010] A grinding assembly is disposed inside the grinding chamber. The output end of the power assembly is connected to the input end of the grinding assembly, and the power assembly is capable of driving the grinding assembly to rotate about a vertical axis.

[0011] The filter collection assembly includes two sets of filter collection structures, each set of filter collection structures being correspondingly arranged with a set of discharge ports. Each set of filter collection structures includes a collection chamber, a screen, and a discharge pipe. The collection chamber is fixed to the outside of the receiving assembly and has a collection cavity. The collection cavity is simultaneously connected to a set of discharge ports. Each discharge port in the set of discharge ports is sealed with the screen. The discharge pipe is connected to the collection cavity and the collection chamber respectively, and the discharge pipe is used to transport the coal-water slurry in the collection cavity to the collection chamber.

[0012] As an optional solution, the housing assembly includes:

[0013] The grinding chamber is a regular octagonal prism extending along the vertical direction, and the grinding chamber has the grinding cavity;

[0014] The support chamber is a cylindrical structure with an open top. The inner cavity of the support chamber has a regular octagonal cross-section. The support chamber is fitted around the outer periphery of the grinding chamber, and the power assembly is mounted on the support chamber.

[0015] As an optional solution, the grinding chamber includes:

[0016] A grinding base plate, wherein the projection of the grinding base plate along the vertical direction is a regular octagon;

[0017] Eight grinding side plates are used to form a grinding cylinder. The projection of the inner cavity of the grinding cylinder along the vertical direction is a regular octagon. The grinding base plate is fixed to the lower end of the grinding cylinder and seals the lower opening of the grinding cylinder.

[0018] As an optional feature, the housing assembly further includes:

[0019] The first fixing member has a grinding end face for each of the grinding side plates. Ear plates are provided on both sides of the grinding end face along the horizontal direction. When the eight grinding side plates form the grinding cylinder, the ear plates extend into the inner cavity of the grinding cylinder. The two ear plates in two adjacent grinding side plates abut against each other. The first fixing member is configured to fix the two abutting ear plates together.

[0020] As an optional solution, the filter collection assembly further includes:

[0021] The clamping assembly includes a clamping plate, a pivot platform, and a clamping structure. The clamping plate is disposed on the outside of the discharge port and faces the discharge port. The end face of the clamping plate near the receiving assembly has a clamping groove for receiving the screen. The pivot platform is fixed to the outside of the receiving assembly. The pivot platform is rotatably connected to the lower end of the clamping plate about a horizontal axis. The clamping structure can press the upper end of the clamping plate against the outside of the receiving assembly.

[0022] As an optional solution, the clamping structure includes:

[0023] Mounting platform, fixed to the outside of the housing assembly;

[0024] A snap-on plate, slidably engaged with the mounting platform, is located on the side of the clamping plate away from the receiving assembly, and the snap-on plate can drive the clamping plate to press against the receiving assembly; and

[0025] A locking element that can lock and fix the buckle plate to the mounting platform.

[0026] As an optional solution, the powertrain includes:

[0027] Mounting base, disposed above the housing assembly;

[0028] A transmission component, mounted on the mounting base, has its output end connected to the input end of the grinding assembly; and

[0029] A drive unit is mounted on the transmission unit, and the output end of the drive unit is connected to the input end of the transmission unit. The drive unit is used to drive the grinding assembly to rotate around the vertical axis.

[0030] As an optional solution, the transmission component includes a housing, a circulating pump, a transmission body, and an air-cooling structure. The housing is mounted on the mounting base, the drive component is mounted on the housing, the housing contains cooling oil, the transmission body is immersed in the cooling oil, the circulating pump drives the cooling oil to circulate within the air-cooling structure and the housing, and the air-cooling structure cools the cooling oil.

[0031] As an optional solution, the grinding assembly includes:

[0032] The mounting shaft extends along the vertical direction and is located inside the grinding chamber. The upper end of the mounting shaft is connected to the output end of the power assembly, and the power assembly can drive the mounting shaft to rotate about the central axis of the mounting shaft.

[0033] A plurality of grinding discs, the plurality of grinding discs being fixedly fixed to the mounting shaft at axial intervals along the mounting shaft; and

[0034] Multiple grinding rods are provided, and multiple grinding rods are fixed on each grinding disc. The multiple grinding rods in the same grinding disc are arranged in a circular interval around the central axis of the mounting shaft.

[0035] As an optional solution, the vertical mixing and grinding equipment for coal-water slurry also includes:

[0036] A cleaning assembly having six cleaning ends, each of which is corresponding to a screen at a discharge port, the cleaning ends being configured to spray cleaning fluid toward the screen, the spraying range of the cleaning ends being greater than the area of ​​the screen.

[0037] The beneficial effects of this invention are:

[0038] The vertical mixing and grinding equipment for coal-water slurry provided by this invention, by setting a grinding chamber within the housing assembly and configuring the grinding chamber as a regular octagonal prism structure extending vertically, increases the disturbance between the coal-water slurry and the circulating grinding media when the power assembly drives the grinding assembly within the grinding chamber to rotate. This not only improves the impact, shearing, and grinding effect of the grinding media on the coal-water slurry but also increases the grinding efficiency of the coal-water slurry. Furthermore, by setting two sets of oppositely arranged discharge ports within the grinding chamber, ensuring that each set includes three discharge ports, and that the three discharge ports in each set are respectively located on the three connected side walls of the grinding chamber, the discharge efficiency and uniformity of the coal-water slurry from the grinding chamber are improved. Two sets of filter collection structures are set up in the filter collection assembly, with each set of filter collection structures corresponding to a set of discharge ports. Each set of filter collection structures is equipped with a collection chamber, a screen, and a discharge pipe. The screen is sealed at each discharge port, and the collection chamber is fixed to the outside of the housing assembly. The collection chamber in the collection chamber is simultaneously connected to the three discharge ports in the set of discharge ports. It can collect the water-coal slurry discharged along the set of discharge ports and after filtration in the collection chamber. The water-coal slurry in the collection chamber is transported to the collection chamber by the discharge pipes connected to the collection chamber and the collection chamber respectively. This greatly improves the discharge efficiency of water-coal slurry and solves the blockage problem caused by untimely discharge during the discharge process. Attached Figure Description

[0039] Figure 1 This is a first structural schematic diagram of the vertical stirring and grinding equipment for coal-water slurry provided in an embodiment of the present invention;

[0040] Figure 2 This is a cross-sectional schematic diagram of the vertical stirring and grinding equipment for coal-water slurry provided in an embodiment of the present invention;

[0041] Figure 3 This is a second structural schematic diagram of the vertical stirring and grinding equipment for coal-water slurry provided in an embodiment of the present invention;

[0042] Figure 4This is a second cross-sectional schematic diagram of the vertical stirring and grinding equipment for coal-water slurry provided in an embodiment of the present invention;

[0043] Figure 5 This is a schematic diagram of the conveying branch pipeline provided in an embodiment of the present invention;

[0044] Figure 6 yes Figure 4 A magnified view of a section at point A in the middle;

[0045] Figure 7 This is a cross-sectional schematic diagram of the filter collection assembly and support chamber provided in an embodiment of the present invention;

[0046] Figure 8 This is a first structural schematic diagram of the clamping assembly, screen, and support chamber provided in an embodiment of the present invention;

[0047] Figure 9 This is a second structural schematic diagram of the clamping assembly, screen, and support chamber provided in an embodiment of the present invention;

[0048] Figure 10 This is a schematic diagram of the support cabin and the flow collection cabin provided in an embodiment of the present invention;

[0049] Figure 11 This is a cross-sectional schematic diagram of the overflow pipe provided in an embodiment of the present invention;

[0050] Figure 12 This is a schematic diagram of the structure of the driving component, transmission component, and grinding assembly provided in the embodiments of the present invention.

[0051] In the picture:

[0052] 100. Housing assembly; 110. Grinding chamber; 111. First discharge port; 112. Grinding side plate; 1121. Ear plate; 120. Support chamber; 121. Second discharge port; 130. Grinding cavity; 140. Feed pipe; 150. Overflow pipe; 151. Overflow baffle; 160. Sand replenishment pipe; 170. First fixing component;

[0053] 200. Filter manifold assembly; 210. Screen; 220. Manifold chamber; 221. Manifold cavity; 222. First window; 230. Clamping assembly; 231. Clamping structure; 2311. Buckle plate; 2312. Locking element; 2313. Mounting platform; 232. Clamping plate; 2321. Clamping groove; 2322. First handle; 233. Pivot platform; 240. Discharge pipe;

[0054] 300. Grinding assembly; 310. Mounting shaft; 320. Grinding disc; 330. Grinding rod; 340. Coupling;

[0055] 400. Powertrain; 410. Drive components; 420. Transmission components; 421. Transmission body; 422. Air-cooled structure; 430. Mounting bracket;

[0056] 500. Cleaning assembly; 510. Main delivery pipeline; 520. Branch delivery pipeline; 521. Liquid outlet;

[0057] 600. Base. Detailed Implementation

[0058] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0059] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0060] In the description of this invention, 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 being 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 being 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.

[0061] Coal-water slurry (CWS) is a solid-liquid two-phase fluid fuel made from approximately 60-70% pulverized coal, 29-39% water, and about 1% chemical additives through a specific process. It possesses petroleum-like fluidity, can be pumped, atomized, and burned stably, earning it the reputation of "liquid coal." As a clean coal-based fuel, coal-water slurry technology plays a significant role in the clean and efficient utilization of coal, replacing fuel oil, and reducing pollutant emissions. The preparation process of coal-water slurry mainly includes crushing, grinding, mixing, and shearing homogenization. Among these, grinding is the most critical step in determining the particle size distribution (gradation) and morphology of the pulverized coal. The ideal particle size distribution is that large particles fill the gaps, medium particles act as intermediaries, and small particles fill the micro-gaps, achieving the closest possible packing between particles. This is essential for producing a high-concentration, low-viscosity coal-water slurry. Furthermore, the quality of the coal-water slurry directly determines its combustion efficiency and environmental performance. Existing grinding equipment suffers from low grinding efficiency and poor grinding effect. In addition, existing grinding equipment has few outlets, making discharge difficult and prone to blockage.

[0062] To solve the above problems, such as Figures 1-4 As shown, this embodiment provides a vertical mixing and grinding device for coal-water slurry. This vertical mixing and grinding device includes a receiving assembly 100, a filter and collection assembly 200, a grinding assembly 300, and a power assembly 400. The receiving assembly 100 has a grinding chamber 130, which is a regular octagonal prism extending vertically. The grinding chamber 130 has two sets of oppositely arranged discharge ports, each set including three discharge ports respectively disposed on three connected side walls of the grinding chamber 130. The power assembly 400 is mounted on the receiving assembly 100, and the grinding assembly 300 is disposed within the grinding chamber 130. The output end of the power assembly 400 is connected to the input end of the grinding assembly 300. The 0 can drive the grinding assembly 300 to rotate around the vertical axis. The filter collection assembly 200 includes two sets of filter collection structures. Each set of filter collection structures is set with a set of discharge ports. Each set of filter collection structures includes a collection chamber 220, a screen 210 and a discharge pipe 240. The collection chamber 220 is fixed on the outside of the receiving assembly 100. The collection chamber 220 has a collection cavity 221. The collection cavity 221 is connected to a set of discharge ports. Each discharge port in the set of discharge ports is sealed with a screen 210. The discharge pipe 240 is connected to the collection cavity 221 and the collection chamber respectively. The discharge pipe 240 is used to transport the coal-water slurry in the collection cavity 221 to the collection chamber.

[0063] This vertical mixing and grinding equipment for coal-water slurry, by setting a grinding chamber 130 within the housing assembly 100 and configuring the grinding chamber 130 as a regular octagonal prism structure extending vertically, increases the disturbance between the coal-water slurry and the circulating grinding media when the power assembly 400 drives the grinding assembly 300 within the grinding chamber 130 to rotate. This not only improves the impact, shearing, and grinding effect of the grinding media on the coal-water slurry but also increases the grinding efficiency of the coal-water slurry. Furthermore, by setting two sets of oppositely arranged discharge ports within the grinding chamber 130, ensuring that each set includes three discharge ports, and that the three discharge ports in each set are respectively located on the three connected side walls of the grinding chamber 130, the discharge efficiency and uniformity of the coal-water slurry from the grinding chamber 130 are improved. Combined with the filter collection assembly 20... Two sets of filter collection structures are set up inside the assembly 100, with each set of filter collection structures corresponding to a set of discharge ports. Each set of filter collection structures is equipped with a collection chamber 220, a screen 210, and a discharge pipe 240. The screen 210 is blocked at each discharge port, and the collection chamber 220 is fixed to the outside of the housing assembly 100. The collection cavity 221 in the collection chamber 220 is simultaneously connected to the three discharge ports in the set of discharge ports. The water-coal slurry discharged along the set of discharge ports and filtered is integrated into the collection cavity 221. The water-coal slurry in the collection cavity 221 is transported to the collection chamber by the discharge pipe 240, which is connected to the collection cavity 221 and the collection chamber respectively. This greatly improves the discharge efficiency of the water-coal slurry and solves the blockage problem caused by untimely discharge during the discharge process.

[0064] It should be noted that the vertical mixing and grinding equipment for coal-water slurry in this embodiment also includes a base 600, and the housing assembly 100 is installed on the base 600 to achieve stable support for the housing assembly 100.

[0065] In one alternative embodiment, the vertical mixing and grinding equipment for coal-water slurry also includes a cleaning assembly 500. The cleaning assembly 500 has six cleaning ends, each corresponding to a screen 210 at a discharge port. The cleaning ends are configured to spray cleaning fluid onto the screen 210, with the spray range of the cleaning ends exceeding the area of ​​the screen 210. By incorporating the cleaning assembly 500 within the vertical mixing and grinding equipment for coal-water slurry, and ensuring that the cleaning assembly 500 has six cleaning ends, each corresponding to a screen 210 at a discharge port, and utilizing the feature that the spray range of the cleaning ends exceeds the area of ​​the screen 210, effective cleaning of the screen 210 is achieved, further preventing blockage at the discharge port.

[0066] It should be noted that, in this embodiment, as Figure 1 and Figure 5As shown, the cleaning assembly 500 includes a main conveying pipeline 510 and six branch conveying pipelines 520. Each branch conveying pipeline 520 corresponds to a screen 210 at a discharge port. Each branch conveying pipeline 520 has multiple outlets 521 to allow the cleaning fluid to be discharged simultaneously through multiple outlets 521. Each branch conveying pipeline 520 serves as a cleaning end. In this embodiment, the six discharge ports are divided into two groups, each group including three discharge ports arranged in sequence. For the two discharge ports at both ends of a group of three discharge ports, the branch conveying pipeline 520 extends horizontally into the collecting cavity 221, directly opposite the discharge ports. For the middle discharge port of a group of three discharge ports, the branch conveying pipeline 520 extends vertically into the collecting cavity 221, directly opposite the discharge port.

[0067] Optionally, the housing assembly 100 includes a grinding chamber 110 and a support chamber 120. The grinding chamber 110 is a regular octagonal prism extending vertically and has a grinding cavity 130. The support chamber 120 is a cylindrical structure with an open top and an octagonal cross-section. The support chamber 120 is fitted around the outer periphery of the grinding chamber 110, and the power assembly 400 is mounted on the support chamber 120. By dividing the housing assembly 100 into the grinding chamber 110 and the support chamber 120, providing the grinding cavity 130 within the grinding chamber 110, and fitting the support chamber 120 around the outer periphery of the grinding chamber 110, the protection of the grinding cavity 130 can be improved, and the structural strength of the housing assembly 100 can be enhanced.

[0068] It should be noted that in this embodiment, the grinding chamber 110 has six first discharge ports 111 and the support chamber 120 has six second discharge ports 121. When the support chamber 120 is fitted outside the grinding cavity 130, each first discharge port 111 is directly opposite to a second discharge port 121.

[0069] Furthermore, in this embodiment, the grinding chamber 130 and the support chamber 120 are fixed by snapping together with the edges of a regular octagonal prism, eliminating the need for additional fasteners such as bolts. This effectively solves the problem of the grinding chamber 130 detaching from the support chamber 120 due to bolt breakage.

[0070] In this embodiment, as Figure 4As shown, the grinding chamber 110 includes a grinding base plate and eight grinding side plates 112. The grinding base plate has a regular octagonal projection along the vertical direction. The eight grinding side plates 112 together form a grinding cylinder. The inner cavity of the grinding cylinder has a regular octagonal projection along the vertical direction. The grinding base plate is fixed to the lower end of the grinding cylinder and seals the lower opening of the grinding cylinder. By using the eight grinding side plates 112 to form the grinding cylinder, making the inner cavity of the grinding cylinder have a regular octagonal projection along the vertical direction, and using the grinding base plate with a regular octagonal projection along the vertical direction to seal the lower opening of the grinding cylinder, the grinding chamber 110 can be formed.

[0071] Specifically, such as Figure 6 As shown, the housing assembly 100 also includes a first fixing member 170. Each grinding side plate 112 has a grinding end face, and ear plates 1121 are provided on both sides of the grinding end face in the horizontal direction. When the eight grinding side plates 112 form a grinding cylinder, the ear plates 1121 extend into the inner cavity of the grinding cylinder. The two ear plates 1121 in two adjacent grinding side plates 112 abut against each other. The first fixing member 170 is configured to fix the two ear plates 1121 that abut against each other. By providing a grinding end face within each grinding side plate 112, and providing ear plates 1121 on both sides of the grinding end face along the horizontal direction, the ear plates 1121 can extend into the inner cavity of the grinding cylinder when the eight grinding side plates 112 form a grinding cylinder. This achieves the effect of two ear plates 1121 within adjacent grinding side plates 112 abutting against each other. The first fixing member 170 is used to fix the two abutting ear plates 1121 together, thus assembling two grinding side plates 112, thereby achieving the effect of eight grinding side plates 112 together forming a grinding cylinder. Furthermore, since the ear plates 1121 are located within the grinding cavity 130, they can further increase the disturbance between the coal-water slurry and the circulating grinding media, improving the impact, shearing, and grinding effects of the grinding media on the coal-water slurry.

[0072] It should be noted that in this embodiment, the first fixing component 170 is a bolt and a nut. The bolt's thread passes through the two lugs 1121 in sequence and is then threaded onto the nut. This bolt and nut fixing method not only provides good fixing effect but also facilitates disassembly and assembly, making subsequent inspection and maintenance easier.

[0073] The receiving assembly 100 in this embodiment includes a feed pipe 140 and a sand replenishment pipe 160. The feed pipe 140 is located at the lower end of the support chamber 120 and communicates with the grinding chamber 130. The feed pipe 140 is configured to supply water-coal slurry raw material to the grinding chamber 130. The sand replenishment pipe 160 is located at the upper end of the support chamber 120 and communicates with the grinding chamber 130. The sand replenishment pipe 160 is configured to replenish grinding media into the grinding chamber 130.

[0074] In an alternative embodiment, such as Figures 7-9As shown, the filter collection assembly 200 also includes a clamping assembly 230, which includes a clamping plate 232, a pivot platform 233, and a clamping structure 231. The clamping plate 232 is disposed outside the second discharge port 121 of the support chamber 120 and is directly opposite to the second discharge port 121. The end face of the clamping plate 232 near the support chamber 120 has a clamping groove 2321 for accommodating the screen 210. The pivot platform 233 is fixed to the outside of the support chamber 120. The pivot platform 233 is rotatably connected to the lower end of the clamping plate 232 about a horizontal axis. The clamping structure 231 can press the upper end of the clamping plate 232 against the outside of the support chamber 120. By setting a clamping assembly 230 in the filter collection assembly 200, the clamping plate 232 of the clamping assembly 230 is positioned outside the second discharge port 121 and directly opposite the second discharge port 121. A clamping groove 2321 for accommodating the screen 210 is set on the end face of the clamping plate 232 near the support chamber 120. The pivot platform 233 fixed to the outside of the support chamber 120 is rotatably connected to the clamping plate 232 around the horizontal axis. The clamping structure 231 presses the upper end of the clamping plate 232 against the outside of the support chamber 120, which can press the screen 210 contained in the clamping groove 2321 against the outside of the support chamber 120 and seal the screen 210 against the outside of the second discharge port 121. This not only achieves filtration of the coal-water slurry discharged along the second discharge port 121, but also improves the replacement efficiency of the screen 210 and reduces the difficulty of replacing the screen 210. When the screen 210 needs to be replaced, the clamping structure 231 is loosened, and the lower end of the clamping plate 232 rotates around the horizontal axis. At this time, the upper end of the clamping plate 232 moves away from the support chamber 120, providing space for the screen 210 to be disassembled and assembled. After the screen 210 to be replaced is taken out from the clamping groove 2321, the new screen 210 is refilled into the clamping groove 2321. Then, the upper end of the clamping plate 232 is driven to abut against the support chamber 120, so that the new screen 210 re-seals the second discharge port 121. Finally, the clamping structure 231 is used again to abut against the outer side of the support chamber 120.

[0075] Specifically, the clamping structure 231 includes a mounting platform 2313, a buckle plate 2311, and a locking element 2312. The mounting platform 2313 is fixed to the outside of the receiving assembly 100. The buckle plate 2311 is slidably engaged with the mounting platform 2313 and is located on the side of the clamping plate 232 away from the support compartment 120. The buckle plate 2311 can drive the clamping plate 232 to press against the receiving assembly 100. The locking element 2312 can lock the buckle plate 2311 and the mounting platform 2313 in place. When it is necessary to loosen the upper end of the clamping plate 232 from the outside of the support compartment 120, the locking element 2312 is first removed from the side of the clamping plate 232 away from the support compartment 120. At this time, the lower end of the clamping plate 232 can rotate relative to the support compartment 120 around a horizontal axis under the action of the pivot platform 233, thereby achieving the effect of loosening the upper end of the clamping plate 232 from the outside of the support compartment 120.

[0076] It should be noted that in this embodiment, the buckle plate 2311 is a cuboid, and a waist-shaped hole extending vertically is provided in the center of the buckle plate 2311. A limiting protrusion that slides with the waist-shaped hole is provided in the mounting platform 2313. When the limiting protrusion abuts against the upper end of the waist-shaped hole, the lower end of the buckle plate 2311 is located on the side of the clamping plate 232 away from the support chamber 120. When the limiting protrusion abuts against the lower end of the waist-shaped hole, there is no part of the buckle plate 2311 located on the side of the clamping plate 232 away from the support chamber 120, so that the upper end of the buckle plate 2311 can move towards the side away from the support chamber 120.

[0077] Furthermore, in this embodiment, the locking element 2312 is a screw, which passes through the oblong hole and is threadedly fixed to the mounting platform 2313. This achieves the fixation of the buckle plate 2311 to the mounting platform 2313. Moreover, the upper end of the clamping plate 232 is provided with a first handle 2322. When it is necessary to rotate the clamping plate 232, the first handle 2322 can be grasped to rotate the clamping plate 232, improving the convenience of operation.

[0078] To further improve the clamping effect of the clamping assembly 230 on the screen 210, the clamping assembly 230 has two sets of mating structures, consisting of a pivot platform 233 and a clamping structure 231 arranged in the vertical direction. The two sets of mating structures are respectively set at both ends of the clamping plate 232 so that both ends of the clamping plate 232 simultaneously abut against the outside of the support chamber 120.

[0079] Optionally, such as Figure 10 As shown, the upper end of the flow chamber 220 has three first windows 222, each of which is directly opposite a clamping assembly 230. When it is necessary to replace the screen 210, the first window 222 can be opened to remove the screen 210 to be replaced from the flow chamber 221 and the new screen 210 can be sealed outside the second discharge port 121.

[0080] As an optional solution, such as Figure 10 and Figure 11 As shown, the housing assembly 100 also includes an overflow pipe 150, wherein the overflow pipe 150 is located at the upper end of the support chamber 120, and the lower end of the overflow pipe 150 is connected to the grinding chamber 130. The overflow pipe 150 extends from bottom to top while tilting outward at 45° to prevent the grinding media or coal-water slurry from overflowing.

[0081] Furthermore, in this embodiment, a plurality of overflow baffles 151 are arranged sequentially along the axial direction of the overflow pipe 150. The overflow baffles 151 are semi-circular plates that precisely block half of the inner cavity of the overflow pipe 150. The projections of two adjacent overflow baffles 151 along the axial direction of the overflow pipe 150 do not contact each other, so as to form a curved overflow cavity in the inner cavity of the overflow pipe 150, further preventing the grinding media or coal-water slurry from overflowing.

[0082] like Figure 1 , Figure 2 as well as Figure 12 As shown, the power assembly 400 includes a mounting base 430, a transmission component 420, and a drive component 410. The mounting base 430 is positioned above the support chamber 120. The transmission component 420 is mounted on the mounting base 430, and its output end is connected to the input end of the grinding assembly 300. The drive component 410 is mounted on the transmission component 420, and its output end is connected to the input end of the transmission component 420. The drive component 410 drives the grinding assembly 300 to rotate around a vertical axis. By providing the mounting base 430 above the support chamber 120, mounting the transmission component 420 on the mounting base 430, and mounting the drive component 410 on the transmission component 420, connecting the input end of the transmission component 420 to the output end of the drive component 410, and connecting the output end of the transmission component 420 to the grinding assembly 300, the grinding of the coal-water slurry within the grinding chamber 130 can be achieved by the drive component 410 driving the grinding assembly 300 to rotate around a vertical axis. Furthermore, the transmission component 420 can convert the high-speed, low-torque power output by the drive component 410 into low-speed, high-torque power, thereby improving the grinding effect on the coal-water slurry. It should be noted that in this embodiment, the drive component 410 is a three-phase asynchronous motor. The specific structure and working principle of the three-phase asynchronous motor are existing technologies and will not be described in detail here.

[0083] As an optional solution, the transmission component 420 includes a housing, a circulating pump, a transmission body 421, and an air-cooling structure 422. The housing is mounted on a mounting base 430, and the drive component 410 is mounted on the housing. Cooling oil is provided inside the housing, and the transmission body 421 is immersed in the cooling oil. The circulating pump drives the cooling oil to circulate between the air-cooling structure 422 and the housing, and the air-cooling structure 422 is used to cool the cooling oil. By mounting the housing on the mounting base 430 and the drive component 410 on the housing, the basic assembly of the powertrain 400 can be achieved. By providing cooling oil inside the housing, immersing the transmission body 421 of the transmission component 420 in the cooling oil, and additionally providing an air-cooling structure 422 for cooling the cooling oil, and using the circulating pump to drive the cooling oil to circulate between the housing and the air-cooling structure 422, air cooling of the cooling oil can be achieved, thereby effectively dissipating heat from the transmission body 421 and significantly improving the cooling effect of the transmission body 421. Understandably, the specific structures and working principles of the air-cooled structure 422, the transmission body 421, the housing, and the circulating pump are all existing technologies and will not be described in detail here.

[0084] Combination Figure 12The specific structure of the grinding assembly 300 is described below. The grinding assembly 300 includes a mounting shaft 310, multiple grinding discs 320, and multiple grinding rods 330. The mounting shaft 310 extends vertically and is located inside the grinding chamber 130. The upper end of the mounting shaft 310 is connected to the output end of the transmission body 421 inside the transmission component 420. The driving component 410 can drive the mounting shaft 310 to rotate around the central axis of the mounting shaft 310. The multiple grinding discs 320 are fixedly fixed on the mounting shaft 310 at intervals along the axial direction of the mounting shaft 310. Multiple grinding rods 330 are fixed on each grinding disc 320. The multiple grinding rods 330 in the same grinding disc 320 are arranged in a circular interval around the central axis of the mounting shaft 310. By setting the vertically extending mounting shaft 310 inside the grinding chamber 130 and connecting the upper end of the mounting shaft 310 to the output end of the transmission body 421, the effect of the driving component 410 driving the mounting shaft 310 to rotate around its own central axis can be achieved. By arranging multiple grinding discs 320 axially spaced on the mounting shaft 310, and fixing multiple grinding rods 330 circumferentially spaced around the central axis of the mounting shaft 310 on each grinding disc 320, the effect of grinding rods 330 and grinding media in the grinding chamber 130 working together to grind coal-water slurry can be achieved.

[0085] It should be noted that, in this embodiment, the grinding assembly 300 includes four grinding discs 320 and twenty grinding rods 330. Three of the four grinding discs 320 have mating through holes, and the remaining one has a mating blind hole. The three grinding discs 320 with mating through holes are sequentially sleeved around the outer periphery of the mounting shaft 310 along the axial direction and locked to the mounting shaft 310 with bolts. The grinding disc 320 with the mating blind hole is fixed to the lower end of the mounting shaft 310 and threaded to the lower end of the mounting shaft 310. In addition, five grinding rods 330 are circumferentially fixed within each grinding disc 320 around the central axis of the mounting shaft 310, and each grinding rod 330 is threaded to the grinding disc 320 with bolts. In other embodiments, the specific number of grinding discs 320 and grinding rods 330 can be adjusted according to actual needs; this embodiment does not impose a specific limitation.

[0086] Furthermore, in this embodiment, the grinding assembly 300 also includes a coupling 340, which fixes the upper end of the mounting shaft 310 to the output end of the transmission body 421 to ensure the transmission stability between the mounting shaft 310 and the output end of the transmission body 421. The coupling 340 in this embodiment is a flanged rigid coupling. The specific structure and working principle of the flanged rigid coupling are existing technologies and will not be described in detail here.

[0087] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A vertical agitator mill for coal water slurry, characterized by, The application relates to a coal water slurry production device. The device comprises: a containing assembly (100) provided with a grinding cavity (130) extending along a vertical direction, the grinding cavity (130) being a regular octagonal prism, the grinding cavity (130) being provided with two groups of oppositely arranged discharge ports, each group of the discharge ports comprising three discharge ports arranged on three side walls of the grinding cavity (130) respectively; a power assembly (400) mounted on the containing assembly (100); a grinding assembly (300) arranged in the grinding cavity (130), an output end of the power assembly (400) being connected with an input end of the grinding assembly (300), the power assembly (400) being capable of driving the grinding assembly (300) to rotate around a vertical shaft; 2. The coal water slurry vertical agitator mill apparatus according to claim 1, wherein, a filtering and collecting assembly (200), the filtering and collecting assembly (200) comprising two groups of filtering and collecting structures, each group of the filtering and collecting structures being arranged correspondingly to one group of the discharge ports, each group of the filtering and collecting structures comprising a collecting cabin (220), a screen (210) and a discharge pipe (240), the collecting cabin (220) being fixed outside the containing assembly (100), the collecting cabin (220) being provided with a collecting cavity (221), the collecting cavity (221) being communicated with one group of the discharge ports, each of the discharge ports in one group of the discharge ports being blocked by the screen (210), the discharge pipe (240) being connected with the collecting cavity (221) and a collecting cabin respectively, the discharge pipe (240) being used for conveying water-coal slurry in the collecting cavity (221) to the collecting cabin. The containing assembly (100) comprises: a grinding cabin (110), the grinding cabin (110) being a regular octagonal prism extending along the vertical direction, the grinding cabin (110) being provided with the grinding cavity (130); 3. The coal water slurry vertical agitator mill apparatus according to claim 2, wherein, a supporting cabin (120), the supporting cabin (120) being a cylindrical structure with an open upper end, an inner cavity section of the supporting cabin (120) being a regular octagon, the supporting cabin (120) being sleeved on an outer periphery of the grinding cabin (110), the power assembly (400) being mounted on the supporting cabin (120). The grinding cabin (110) comprises: a grinding bottom plate, a projection of the grinding bottom plate along a vertical direction being a regular octagon; 4. The coal water slurry vertical agitator mill apparatus according to claim 3, wherein, eight grinding side plates (112), the eight grinding side plates (112) jointly forming a grinding cylinder body, a projection of an inner cavity of the grinding cylinder body along the vertical direction being a regular octagon, the grinding bottom plate being fixed at a lower end of the grinding cylinder body and blocking an open lower end of the grinding cylinder body. The containing assembly (100) further comprises: The first fixing member (170) is configured to fixedly connect the two abutting ear plates (1121) in the eight grinding side plates (112).

5. The coal water slurry vertical agitator mill apparatus according to any one of claims 1 to 4, wherein, The filter assembly (200) further comprises: The clamping assembly (230) comprises a clamping plate (232), a pivoting table (233), and a clamping structure (231). The clamping plate (232) is arranged outside the discharge port and faces the discharge port. The clamping plate (232) is provided with a clamping groove (2321) for accommodating the screen (210) near the end face of the containing assembly (100). The pivoting table (233) is fixed outside the containing assembly (100). The pivoting table (233) is rotationally connected to the lower end of the clamping plate (232) about a horizontal axis. The clamping structure (231) can abut the upper end of the clamping plate (232) against the outside of the containing assembly (100).

6. The coal water slurry vertical agitator mill apparatus according to claim 5, wherein, The clamping structure (231) comprises: The mounting table (2313) is fixed outside the containing assembly (100); The buckle plate (2311) is in sliding fit with the mounting table (2313). The buckle plate (2311) is located on the side of the clamping plate (232) away from the containing assembly (100). The buckle plate (2311) can drive the clamping plate (232) to abut against the containing assembly (100); and The locking member (2312) can lock and fix the buckle plate (2311) and the mounting table (2313).

7. The coal water slurry vertical agitator mill apparatus according to any one of claims 1 to 4, wherein, The power assembly (400) comprises: The mounting seat (430) is arranged above the containing assembly (100); The transmission member (420) is installed on the mounting seat (430). The output end of the transmission member (420) is connected to the input end of the grinding assembly (300); and The driving member (410) is installed on the transmission member (420). The output end of the driving member (410) is connected to the input end of the transmission member (420). The driving member (410) is used to drive the grinding assembly (300) to rotate about the vertical axis.

8. The coal water slurry vertical agitator mill apparatus according to claim 7, wherein, The transmission member (420) comprises a containing box, a circulating pump, a transmission body (421), and an air cooling structure (422). The containing box is installed on the mounting seat (430). The driving member (410) is installed on the containing box. The containing box is provided with cooling oil liquid. The transmission body (421) is immersed in the cooling oil liquid. The circulating pump is used to drive the cooling oil liquid to circulate in the air cooling structure (422) and the containing box. The air cooling structure (422) is used to cool the cooling oil liquid.

9. The coal water slurry vertical agitator mill apparatus according to any one of claims 1 to 4, wherein, The grinding assembly (300) comprises: a mounting shaft (310) extending along the vertical direction and located in the grinding cavity (130), an upper end of the mounting shaft (310) being connected with an output end of the power assembly (400), the power assembly (400) being capable of driving the mounting shaft (310) to rotate around a central axis of the mounting shaft (310); a plurality of grinding discs (320) fixed on the mounting shaft (310) along an axial direction of the mounting shaft (310); and a plurality of grinding rods (330), each of the grinding discs (320) being fixed with a plurality of the grinding rods (330), the plurality of the grinding rods (330) in the same grinding disc (320) being arranged in a circular interval around the central axis of the mounting shaft (310).

10. The coal water slurry vertical agitator mill apparatus according to any one of claims 1 to 4, wherein, The vertical coal water slurry stirring and grinding device further comprises: a cleaning assembly (500) having six cleaning ends, each of the cleaning ends being correspondingly arranged with the screen (210) at one of the discharge ports, the cleaning end being configured to spray cleaning liquid towards the screen (210), a spraying range of the cleaning end being greater than an area of the screen (210).

Images