Filtration equipment for coal mill hydraulic systems

Abstract

Provides filtration equipment for coal mill hydraulic systems. The device comprises an equipment box 1 and supporting components, a removable equipment cover plate 2 on the top of the equipment box, a feed hopper 3 connected to the top of the cover plate, side through-holes on the top of both sides of the equipment box, a rotating shaft 5 rotatably connected to the lower part of the lateral through-hole, a protective baffle 6 and an elastic connecting frame plate attached to the top and inside of the rotating shaft, respectively, a filtering mesh plate attached at the center of the elastic connecting frame plate, and a semi-triangular elastic flow guide inclined plate attached to the top of the frame plate. Locking posts 10 are attached on both sides of the front of the protective baffle, and locking tubes 11 are evenly spaced at the center of both sides of the equipment box, forming a removable engagement structure. The device uses the rotating shaft system to adjust the angle of the elastic connecting frame plate, utilizing gravity and elastic deformation characteristics to achieve a self-cleaning function for impurities. The elastic flow guide inclined plate and the filtering mesh plate form a narrow-angle guide structure, adaptively adjusting the guide angle through deformation and preventing tapered oil accumulation.

Description

[Technical Field]

[0001] The present invention relates to the field of filtration technology, and more particularly to filtration devices for coal mill hydraulic systems. [Background technology]

[0002] Filtration devices in coal mill hydraulic systems are important devices used to maintain hydraulic system cleanliness in coal processing. Their core function is to block solid impurities from the hydraulic oil and ensure stable operation. Traditional filtration devices generally use a fixed frame structure, with the filter mesh plate and support member directly fixed by a rigid link. However, this design has many technical flaws that have become apparent over time. When the filter mesh plate becomes clogged with impurities, the operation must be completely stopped and manually cleaned, which not only affects production continuity but also easily causes wear and tear on the connectors due to frequent removal operations. At the same time, rigid frames cannot absorb the impact energy of impurity particles due to deformation. Under the action of high-speed fluid, stress concentration occurs on the surface of the filter components, resulting in localized deformation and mesh tearing, significantly shortening the equipment's service life.

[0003] In addition, existing flow guide structure designs have obvious drawbacks. Conventional flow guide plates are usually flat or have a single curvature, and are aligned perpendicular or at a certain angle with the filter mesh plate. However, this layout tends to form a tapered deposition area at the interface between the flow guide plate and the filter mesh plate during impurity treatment. As the impurity layer thickens, the actual filtration area is significantly compressed, resulting in a rapid increase in the system pressure difference. Furthermore, rigid flow guide structures cannot dynamically adjust according to the liquid flow rate, often resulting in uneven flow diversion under fluctuating flow rates. It is also noteworthy that the locking mechanism of conventional filtration devices uses a bolted fastening system, and maintenance requires the connection parts to be loosened one by one with special tools, which poses the risk of component slippage and is a time-consuming task. A completely rigid connection cannot provide temporary support during the cleanup process, making it difficult to pay attention to both maintenance and structural stability. In light of these issues, we propose a filtration device for a coal mill hydraulic system. Summary of the Invention [Problem to be solved by the invention]

[0004] In view of the shortcomings of the existing technology, the present invention provides a filtering device for a coal mill hydraulic system to solve the above-mentioned technical problem that a tapered accumulation area is easily formed at the boundary between the flow guide plate and the filtering mesh plate, making it difficult to pay attention to both maintenance work and structural stability. [Means for solving the problem]

[0005] In order to achieve the above objectives, the present invention provides the following technical solution: a filtering device for a coal mill hydraulic system, comprising: The apparatus includes an equipment box and an equipment cover plate provided on the upper surface of the equipment box, the feed side of the upper surface of the equipment cover plate is connected to a feed hopper, and side through-grooves are provided on both sides of the upper portion of the equipment box; The rotating shaft is rotatably connected to the lower part of the inner cavity of the side through-groove, and a protective baffle and an elastic connecting frame plate are respectively attached to the upper and inner surfaces of the rotating shaft, a filtering mesh plate is attached at the center of the elastic connecting frame plate, and an elastic flow guide inclined plate is provided on the inner surface of the upper surface of the elastic connecting frame plate, and the elastic flow guide inclined plate is designed as a semicircular triangle; The locking posts are provided on both sides of the front of the protective baffle, and locking tubes are provided evenly at the center of both sides of the equipment box, and the locking posts are engaged with the locking tubes. The operator pours the oil to be filtered into the equipment box through the feed hopper on the top of the equipment cover plate, and the oil slides down into the equipment box along the slope of the feed hopper.

[0006] After the oil enters the equipment box, it first comes into contact with the elastic flow guide swash plate, which has a semi-triangular design, allowing the oil to be evenly distributed over the surface of the elastic connecting frame plate through its inclined structure, preventing the oil from accumulating in one place.

[0007] The dispersed oil passes through the filtering mesh plate at the center of the elastic connecting frame plate, and the filtering mesh plate blocks the impurities in the oil. The acceptable oil passes through the mesh and falls to the bottom of the device box, while the impurities remain on the surface of the filtering mesh plate.

[0008] The impact of the oil causes a small amount of elastic deformation in the elastic flow guide inclined plate and the elastic connecting frame plate, which absorbs the impact force, reduces the direct pressure of the oil material on the filtering mesh plate, and prevents impurities from clogging the mesh due to the vibration effect.

[0009] The protective baffle is rotated on the rotating shaft to adjust the relative angle with the elastic connecting frame plate. When the protective baffle is vertical, it completely covers the side through-holes and prevents oil from overflowing. When the filtering parts need to be cleaned or replaced, rotate the protective baffle outward to a horizontal position, exposing the elastic connecting frame plate and facilitating operation.

[0010] When the protective baffle is turned outward, the locking post enters the locking tube, making an engagement connection, cleaning impurities on the over-mesh plate, and then resetting it after completion.

[0011] Preferably, the locking posts have locking holes evenly spaced on both sides, and the locking tube has a central groove at the top, and the locking posts are inserted into the groove through the groove at the top of the locking tube.

[0012] Preferably, the locking tube has elastic projections evenly spaced on both sides of its inner wall, and the projections correspond in shape and position to the holes. When the post is inserted, the projections are pushed out and deformed, and after the post is fully inserted, the projections are reset and embedded in the holes to form a lock.

[0013] Preferably, the device box has a locating hole on the periphery of its upper surface, and the device cover plate has a locating post on the periphery of its lower surface, which is inserted and connected to the locating hole. The device cover plate is aligned with the locating hole on the upper surface of the device box through the locating post on the lower surface, and the locating post and the locating hole are inserted and fitted by vertically pushing down.

[0014] Preferably, a flow guide base is attached to the bottom surface of the equipment box, and the entire flow guide base has a tapered design. After the oil enters the equipment box, it flows along the conical surface of the flow guide base and diffuses around, while the flow diverting cone under the equipment cover plate guides the oil entering the feed hopper.

[0015] Preferably, a diverting cone is attached below the cover plate of the device, and the diverting cone is located at a position corresponding to the feed hopper, and the diverting holes are evenly arranged on the surface of the diverting cone, and the material is dispersed through the diverting holes evenly arranged on the surface of the diverting cone, and then multiple fine streams are formed, which enter the subsequent processing zone along different paths. [Effects of the Invention]

[0016] Compared with the prior art, the present invention provides a filtering device for coal mill hydraulic system, which has the following beneficial effects: In the filtering device of the coal mill hydraulic system, the rotary connection adopted by the rotary shaft system gives the elastic connecting frame plate the function of adjusting the angle. When the filtering efficiency of the filtering mesh plate decreases due to the accumulation of impurities, the tilt angle of the frame plate can be changed by rotating the rotary shaft, and self-cleaning function can be realized by using gravity. In addition, the impact energy of the impurities can be effectively absorbed by the buffering properties of the elastic material, and the service life of the filtering parts can be extended. The elastic flow guide slanted plate and the filtering mesh plate have a semi-triangular structure, which forms a square fit, forming a flow guide and a diversion effect during the process of impurities falling, and preventing the formation of a cone-shaped accumulation of oil on the frame plate surface.In addition, the deformation characteristics of the elastic material allow the flow guide angle to be adjusted, greatly improving the utilization rate of the filtering area. The locking mechanism formed by the protective baffle and the locking column can maintain rigid support for the filtering components during the cleaning process through a locking connection with the locking tubes on both sides of the box. Once cleaning is completed, the components can be quickly removed and attached by simply releasing the lock, achieving both structural stability and ease of maintenance. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a schematic diagram of the overall structure of the present invention; [Figure 2] 2 is a cross-sectional view of the device box and the device cover plate according to the present invention; FIG. [Figure 3] 2 is a partial cross-sectional view of a cover plate of the device according to the present invention; [Figure 4] 1 is a schematic diagram showing the rotation structure of the filtering mesh plate on the device box of the present invention. [Figure 5] 1 is a schematic diagram of a rotating shaft and its connecting structure according to the present invention; [Figure 6]1 is a schematic diagram of the separation structure of the locking post and the locking hole of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention, but it is clear that the described embodiments are only a part of the embodiments of the present invention, and are not all of the embodiments. Based on the embodiments of the present invention, all other embodiments that can be obtained by those skilled in the art without any creative efforts fall within the protection scope of the present invention.

[0019] The present invention provides a technical solution of a filtering device for a coal mill hydraulic system, referring to Figures 1, 2, 4, 5 and 6, which includes: The device comprises an equipment box 1 and an equipment cover plate 2 provided on the upper surface of the equipment box 1, a feed hopper 3 is connected to the feed side of the upper surface of the equipment cover plate 2, and side through grooves 4 are provided on the upper both sides of the equipment box 1, The rotating shaft 5 is rotatably connected to the lower part of the bore of the side through-groove 4, and a protective baffle 6 and an elastic connecting frame plate 7 are respectively attached to the upper and inner surfaces of the rotating shaft 5, a filtering mesh plate 8 is attached to the center of the elastic connecting frame plate 7, and an elastic flow guide inclined plate 9 is provided on the inner surface of the upper surface of the elastic connecting frame plate 7, and the elastic flow guide inclined plate 9 is designed as a semicircular triangle; The locking columns 10 are provided on both sides of the front of the protective baffle 6, and the locking tubes 11 are evenly provided at the center of both sides of the equipment box 1, and the locking columns 10 engage with the locking tubes 11. The operator pours the oil to be filtered into the equipment box 1 through the feed hopper 3 on the top of the equipment cover plate 2, and the oil slides down into the equipment box 1 along the slope of the feed hopper 3.

[0020] After oil enters the device box 1, it first comes into contact with the elastic flow guide swash plate 9. The elastic flow guide swash plate 9 has a semi-triangular design, which allows the oil to be evenly distributed over the surface of the elastic connecting frame plate 7 due to its inclined structure, preventing the oil from accumulating in one place.

[0021] The dispersed oil passes through the filtering mesh plate 8 located at the center of the elastic connecting frame plate 7, and the filtering mesh plate 8 blocks the impurities in the oil. The acceptable oil passes through the mesh and falls to the bottom of the device box 1, while the impurities remain on the surface of the filtering mesh plate 8.

[0022] The impact of the oil causes a small amount of elastic deformation in the elastic flow guide inclined plate 9 and the elastic connecting frame plate 7, which absorbs the impact force, reduces the direct pressure of the oil material on the filtering mesh plate 8, and prevents impurities from clogging the mesh due to the vibration effect.

[0023] The protective baffle 6 is rotated on the rotary shaft 5 to adjust the relative angle with the elastic connecting frame plate 7. When the protective baffle 6 is vertical, it completely covers the side through-groove 4 and prevents oil from overflowing. When the filtering parts need to be cleaned or replaced, the protective baffle 6 is rotated outward to a horizontal position, exposing the elastic connecting frame plate 7 and facilitating operation. When the protective baffle 6 is turned outward, the locking posts 10 enter the locking tubes 11 to make an engagement connection, clean the impurities on the overmesh plate 8, and then reset it after completion.

[0024] The semi-triangular structure of the elastic flow guide swash plate 9 not only achieves uniform oil distribution, but also buffers the impact of oil with its elastic properties, reducing mechanical wear on the filtering mesh plate 8 and extending the life of the device. The engaging connection between the locking post 10 and the locking tube 11 allows for quick installation and removal of the protective baffle 6, facilitating regular cleaning of the filtering components. The inverted design of the protective baffle 6 prevents the operator from directly contacting the internal moving parts, improving safety during maintenance.

[0025] Referring to Figure 6, the locking holes 12 are evenly spaced on both sides of the locking post 10, and an inlet / outlet groove 13 is located at the center of the top of the locking tube 11, with the locking post 10 corresponding to the position of the inlet / outlet groove 13. The locking post 10 is inserted into the locking tube 11 through the inlet / outlet groove 13 at the top of the locking tube 11, and the locking structure design between the locking post 10 and the locking tube 11 enables quick disassembly and assembly of the modular components. Elastic inserting protrusions 14 are evenly spaced on both sides of the inner wall of the locking tube 11, and the elastic inserting protrusions 14 correspond in shape and position to the locking holes 12. When the post 10 is inserted, the elastic projection 14 is extruded and deformed. When the post 10 is fully inserted, the elastic projection 14 is reset and embedded in the hole 12 to form an engagement. The corresponding arrangement of the elastic projection 14 and the hole 12 forms a self-locking mechanical connection, which can maintain a stable locked state in the absence of external force. When it is released, it can be unlocked by applying a certain external force, achieving both connection reliability and operability.

[0026] Referring to Figure 2, positioning holes 16 are installed around the top surface of the equipment box 1, and positioning posts 15 are attached to the bottom surface of the equipment cover plate 2, which are inserted and connected to the positioning posts 15 and the positioning holes 16. The equipment cover plate 2 is aligned with the positioning holes 16 on the top surface of the equipment box 1 through the positioning posts 15 on its underside, and the positioning posts 15 and the positioning holes 16 are inserted and fitted together by a vertical pressing motion. The insertion and fitting of the positioning posts 15 and the positioning holes 16 effectively limits the relative displacement between the equipment box 1 and the equipment cover plate 2, and the quadrilateral symmetrical positioning method ensures uniform contact between the sealing surfaces and prevents sealing failure due to misalignment. A flow guide base 17 is attached to the bottom surface of the equipment box 1, and the entire flow guide base 17 has a tapered design. After entering the equipment box 1, the oil spreads and flows in all directions along the conical surface of the flow guide base 17. At the same time, the flow diverting cone 18 under the equipment cover plate 2 guides the oil entering the feed hopper 3. The streamlined design of the conical flow guide base 17 allows the oil to naturally spread around due to gravity, avoiding oil accumulation due to the right-angle structure, and the angle of the conical surface optimizes the flow resistance characteristics of the discharged material.

[0027] Referring to Figure 3, a diverting cone 18 is installed below the cover plate 2 of the device, corresponding to the position of the feed hopper 3. Diversion holes 19 are evenly distributed on the surface of the diverting cone 18. After the material passes through the evenly distributed diverting holes 19 on the surface of the diverting cone 18 and is dispersed, multiple fine streams are formed, which enter the subsequent processing zone along different paths. The combined structure of the diverting cone 18 and the diverting holes 19 achieves uniform radial distribution of the material, and the conical guide surface reduces direct collision of the material with the feed hopper 3. The evenly distributed diverting holes 19 effectively prevent local overloads from reducing processing efficiency.

[0028] This solution: the operator pours the oil to be filtered into the equipment box 1 through the feed hopper 3 on the top of the equipment cover plate 2, and the oil slides down into the equipment box 1 along the slope of the feed hopper 3.

[0029] After oil enters the device box 1, it first contacts the elastic flow guide swash plate 9. Its semi-triangular sloping structure distributes the oil evenly over the surface of the elastic connecting frame plate 7.

[0030] The dispersed oil passes through the filtering mesh plate 8 at the center of the elastic connecting frame plate 7, impurities in the oil are blocked by the surface of the filtering mesh plate 8, and the passed oil passes through the mesh and falls to the bottom of the device box 1.

[0031] The impact of the oil causes a small amount of elastic deformation in the elastic flow guide swash plate 9 and the elastic connecting frame plate 7, which absorbs the impact force and reduces the direct pressure of the oil material on the filtering mesh plate 8.

[0032] The vibration effect generated during the elastic deformation acts on the filtering mesh plate 8, preventing impurity particles from clogging the mesh structure.

[0033] The protective baffle 6 is rotated on the rotary shaft 5 to adjust the relative angle with the elastic connecting frame plate 7. When the protective baffle 6 is vertical, it completely covers the side through groove 4, preventing oil from overflowing.

[0034] When the filtering components need to be cleaned or replaced, the protective baffle 6 is rotated outward to a horizontal position, and the elastic connecting frame plate 7 is exposed to the outside of the equipment box 1 through the side through-groove 4 .

[0035] While the protective baffle 6 is being inverted, the locking posts 10 on both sides of the front surface of the protective baffle 6 are inserted into the inner cavities of the locking holes 11 through the inlet / outlet grooves 13 at the top of the locking holes 11 .

[0036] The locking post 10 is inserted by squeezing the elastic fitting protrusions 14 on the inner wall of the locking hole 11. After the locking post 10 is fully inserted, the elastic fitting protrusions 14 are reset and fit into the locking holes 12 on both sides of the locking post 10, forming a self-locking engagement.

[0037] The worker cleans the exposed elastic connecting frame plate 7 of impurities, and after completion, releases the engagement between the elastic fitting protrusion 14 and the locking hole 12 by external force, resetting the protective baffle 6 to the vertical shielding position.

[0038] The device cover plate 2 is inserted into the positioning holes 16 on the top surface of the device box 1 through the positioning posts 15 on the bottom surface, thereby realizing a sealed connection between the box and the cover plate.

[0039] The oil flows in the equipment box 1 along the conical surface of the flow guide base 17, spreading out around the periphery, and the flow diverting cone 18 below the equipment cover plate 2 guides the oil that has entered the feed hopper 3.

[0040] The diverting holes 19 on the surface of the diverting cone 18 disperse the oil into multiple fine streams, allowing the oil material to enter the filtration area uniformly along different paths.

[0041] It should be noted that, in this document, relational terms such as "first," "second," etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply that any actual relationship or order exists between those entities or operations. Furthermore, the use of "comprises," "includes," or other variations of any of these terms implies an inclusion that is not exclusive. Thus, a process, method, article, or facility that includes a set of elements includes not only those elements but also other elements not expressly listed or that are inherent in such process, method, article, or facility.

[0042] While 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 variations can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is limited by the appended claims and their equivalents. [Explanation of symbols]

[0043] 1 Device Box 2 Device cover plate 3 Feed Hopper 4 Side through groove 5 Rotation Axis 6 Protective Baffles 7 Elastic connecting frame plate 8. Filtration mesh plate 9 Elastic flow guide swash plate 10 Locking pillar 11 Locking tube 12 Locking hole 13 Inlet and outlet 14 Elastic fitting protrusion 15 Positioning pillar 16 Positioning hole 17 Flow Guide Base 18 Diversion Cone 19 Diversion hole

Claims

1. 1. A filtration apparatus for a coal mill hydraulic system, comprising: The apparatus comprises an equipment box (1) and an equipment cover plate (2) provided on the upper surface of the equipment box (1), a feed hopper (3) is connected to the feed side of the upper surface of the equipment cover plate (2), and side through grooves (4) are provided on both upper sides of the equipment box (1); The rotating shaft (5) is rotatably connected to the lower part of the inner cavity of the side through-groove (4), a protective baffle (6) and an elastic connecting frame plate (7) are respectively attached to the upper and inner surfaces of the rotating shaft (5), a filtering mesh plate (8) is attached at the center of the elastic connecting frame plate (7), and an elastic flow guide inclined plate (9) is provided on the inner surface of the upper surface of the elastic connecting frame plate (7), and the elastic flow guide inclined plate (9) is designed in a semicircular triangle; The filtering device of the coal mill hydraulic system is characterized in that the locking posts (10) are provided on both sides of the front of the protective baffle (6), and the locking tubes (11) are evenly provided at the center of both sides of the equipment box (1), and the locking posts (10) are engaged with the locking tubes (11).

2. 2. The filtering device of the coal mill hydraulic system according to claim 1, wherein the locking posts (10) have locking holes (12) evenly arranged on both sides, and the locking tube (11) has an inlet / outlet groove (13) at the center of the top of the locking tube (11), and the locking posts (10) correspond to the positions of the inlet / outlet groove (13).

3. 3. The filtering device of the coal mill hydraulic system according to claim 2, wherein elastic fitting protrusions (14) are evenly attached to both sides of the inner wall of the locking tube (11), and the elastic fitting protrusions (14) correspond to the shapes and positional relationship of the locking holes (12).

4. 2. The filtering device of the coal mill hydraulic system according to claim 1, wherein a positioning hole (16) is provided around the upper surface of the device box (1), and a positioning pillar (15) is attached around the lower surface of the device cover plate (2), and the positioning pillar (15) and the positioning hole (16) are inserted and connected.

5. The filtering device for a coal mill hydraulic system as claimed in claim 1, characterized in that a flow guide base (17) is attached to the underside of the equipment box (1), and the entire flow guide base (17) has a tapered design.

6. 2. The filtering device of the coal mill hydraulic system according to claim 1, wherein a diverting cone (18) is attached below the device cover plate (2), and the diverting cone (18) corresponds to the position of the feed hopper (3), and diverting holes (19) are evenly arranged on the surface of the diverting cone (18).

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