Slurry stirring device
By designing a slurry stirring device including a stirring assembly and a scraping assembly, the problem of slurry deposition caused by difficult contact with the bottom of the barrel of traditional equipment is solved, and a higher cleaning efficiency and reduced operation and maintenance cost are achieved.
Patent Information
- Application Number
- CN202510438876.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2025-06-06
AI Technical Summary
Traditional mixing equipment is difficult to contact the bottom of the barrel, resulting in slurry deposition and bonding, increasing cleaning frequency and operation and maintenance costs.
A slurry stirring device including a barrel, a stirring assembly and a scraping assembly is designed. The stirring assembly consists of a rotating shaft and a stirring blade. The scraping assembly is arranged between the stirring blades. The scraping assembly and the stirring blade are spaced apart, and are close to the barrel in the radial direction of the rotating shaft to reduce slurry deposition.
It effectively reduces the deposition and bonding of the slurry at the bottom of the barrel, improves the cleaning efficiency of the slurry stirring device, and reduces operation and maintenance costs.
Smart Images
Figure CN120094448A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of mine filling slurry stirring equipment, and in particular to a slurry stirring device. Background Art
[0002] Backfill mining technology is a mining method widely used in metal mines and non-metal mines. One of its core links is the preparation and transportation of backfill slurry. In the preparation process of backfill slurry, the role of the mixing equipment is to evenly mix the tailings, cementitious materials and water to form a stable backfill slurry.
[0003] During the stirring process of the filling slurry, the stirring blades of the traditional design are difficult to contact the bottom area of the tank, which makes the existing stirring equipment generally have the problem of slurry deposition and adhesion, resulting in increased cleaning frequency and higher operation and maintenance costs. Summary of the invention
[0004] In view of this, the present application provides a slurry stirring device, the purpose of which is to solve one of the technical problems in the prior art.
[0005] To achieve the above objectives, the technical solutions adopted in this application are as follows: In a first aspect, the present invention provides a slurry stirring device, comprising: Barrel; A stirring assembly is disposed in the barrel, the stirring assembly comprises a rotating shaft and a plurality of stirring blades, and the plurality of stirring blades are arranged at intervals along the axial direction of the rotating shaft; A plurality of scraper assemblies are connected to the rotating shaft, each of the scraper assemblies is arranged between two adjacent stirring blades, the scraper assemblies are spaced apart from the stirring blades, and in the radial direction of the rotating shaft, the spacing distance between the end of the scraper assembly and the barrel is smaller than the spacing distance between the end of the stirring blade and the barrel.
[0006] In an optional embodiment, the scraper assembly includes: A connecting member, the connecting member is connected to the rotating shaft and is arranged to be inclined relative to the radial direction of the rotating shaft; A scraper is connected to the side of the connecting member away from the rotating shaft. In the radial direction of the rotating shaft, the scraper is arranged on the side of the stirring blade close to the barrel and is spaced apart from the stirring blade.
[0007] In an optional embodiment, the barrel is provided with a feed port and a discharge port, the feed port and the discharge port are spaced apart along the axial direction of the rotating shaft, and the end of the connecting member away from the rotating shaft is inclined toward the feed port.
[0008] In an optional embodiment, the scraper member includes at least one scraper, and the scraper includes a main body and a blade. The main body is connected to the connecting member, and the blade is connected to a side of the main body away from the connecting member.
[0009] In an optional embodiment, the edge of the blade portion is in the shape of an arc with a concave center or an arc with a convex center.
[0010] In an optional embodiment, the spacing distance between the edge of the blade and the barrel is L1, which satisfies: 10mm≤L1≤15mm.
[0011] In an optional embodiment, when there are multiple scrapers, multiple main bodies are connected close to the end of the connecting member, and multiple main bodies are spaced apart from the end of the connecting member.
[0012] In an optional embodiment, when there are multiple scrapers, the edge shapes of at least two of the blades are complementary.
[0013] In an optional embodiment, in the axial direction of the rotating shaft, the width of the connecting member is L2, and the distance between two adjacent stirring blades is L3, satisfying: 0.56≤L2 / L3≤0.67.
[0014] In an optional embodiment, in the rotation direction of the rotating shaft, there is a phase difference angle between the stirring blade and the scraper assembly, and the stirring blade leads the scraper assembly by 10° to 20°.
[0015] Compared with the prior art, the beneficial effects of the present application are as follows: the present application proposes a slurry stirring device, comprising a barrel, a stirring assembly and multiple scraper assemblies, the stirring assembly being arranged in the barrel, the stirring assembly comprising a rotating shaft and multiple stirring blades, the multiple stirring blades being arranged at intervals along the axial direction of the rotating shaft; multiple scraper assemblies are connected to the rotating shaft, each of the scraper assemblies is arranged between two adjacent stirring blades, the scraper assemblies and the stirring blades are arranged at intervals, and in the radial direction of the rotating shaft, the spacing distance between the end of the scraper assembly and the barrel is smaller than the spacing distance between the end of the stirring blade and the barrel, thereby reducing the problem of slurry deposition and adhesion at the bottom of the barrel, improving the cleaning efficiency of the slurry stirring device, and reducing operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 A schematic diagram of the structure of a slurry stirring device in some embodiments of the present application is shown; Figure 2 One of the structural schematic diagrams of the scraper assembly in some embodiments of the present application is shown; Figure 3 The second structural schematic diagram of the scraper assembly in some embodiments of the present application is shown; Figure 4 One of the schematic structural diagrams of the blade portion in some embodiments of the present application is shown; Figure 5 The second schematic diagram of the structure of the blade in some embodiments of the present application is shown.
[0018] Explanation of the main component symbols: 100-slurry stirring device; 110-barrel; 111-feed port; 112-discharge port; 121-rotating shaft; 122-stirring blade; 130-scraper assembly; 131-connecting piece; 1311-connecting column; 1312-connecting plate; 132-scraper; 1321-scraper; 13211-main body; 13212-blade. DETAILED DESCRIPTION
[0019] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.
[0020] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0022] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0023] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0024] The function of the slurry stirring device is to evenly mix the tailings, cementitious materials and water to form a stable filling slurry. Due to the high viscosity and high concentration of the filling slurry, the stirring blades of the traditional design are short and difficult to contact the bottom area of the barrel. The slurry is easy to accumulate at the bottom of the barrel during the stirring process, resulting in increased cleaning frequency and higher operation and maintenance costs.
[0025] like Figure 1 As shown, the embodiment of the present application provides a slurry stirring device 100, which is mainly used for stirring and filling slurry. The slurry stirring device 100 includes a barrel 110, a stirring assembly and a plurality of scraper assemblies 130.
[0026] The stirring assembly is disposed in the barrel 110 and is driven to rotate by a motor. The stirring assembly includes a rotating shaft 121 and a plurality of stirring blades 122, and the plurality of stirring blades 122 are arranged at intervals along the axial direction of the rotating shaft 121. Figure 1 As shown, the cross section of the stirring blade 122 is triangular, and the stirring blades 122 are arranged at intervals between two adjacent stirring blades 122 on the same side. The stirring blades 122 are arranged alternately on the upper and lower sides of the rotating shaft 121.
[0027] The plurality of scraper assemblies 130 are connected to the rotating shaft 121 , so that the scraper assemblies 130 rotate along with the rotating shaft 121 .
[0028] Each scraper assembly 130 is disposed between two adjacent stirring blades 122, and the scraper assembly 130 is spaced apart from the stirring blades 122. Figure 1As shown, the scraper assemblies 130 are arranged at intervals between two adjacent scraper assemblies 130 on the same side, and the scraper assemblies 130 distributed on the upper and lower sides of the rotating shaft 121 are arranged alternately, thereby increasing the scraping area of the scraper assemblies 130 on the side wall of the barrel 110. Figure 1 As shown, the barrel 110 is placed horizontally, and the slurry in the barrel 110 tends to accumulate at the bottom.
[0029] In the radial direction of the rotating shaft 121, the distance between the end of the scraper assembly 130 and the barrel 110 is smaller than the distance between the end of the stirring blade 122 and the barrel 110. In this way, during the rotation of the scraper assembly 130, the slurry attached to the side wall of the barrel 110 is re-mixed into the stirring cycle, effectively reducing the problem of slurry adhesion and accumulation on the bottom wall of the barrel 110, and reducing the cleaning frequency and operation and maintenance costs of the slurry stirring device.
[0030] In some embodiments, the scraper assembly 130 includes a connecting member 131 and a scraper member 132 .
[0031] like Figure 1 and Figure 2 As shown, the connecting member 131 is used to form a stable connection between the scraper assembly 130 and the rotating shaft 121. The connecting member 131 includes a plurality of connecting columns 1311 and a connecting plate 1312, and the connecting columns 1311 connect the rotating shaft 121 and the connecting plate 1312.
[0032] In one embodiment, the connection column 1311 and the connection plate 1312 are both made of steel, and anti-sticking coatings are provided on the surfaces of the connection column 1311 and the connection plate 1312 to prevent slurry from being deposited on the surface of the connector 131 .
[0033] The plurality of connecting posts 1311 are arranged at intervals. During the rotation of the scraper assembly 130 , the slurry can pass through the gaps between the connecting posts 1311 , thereby reducing the deposition of the slurry on the surface of the rotating shaft 121 and reducing the overall weight of the scraper assembly 130 .
[0034] The connecting plate 1312 is welded to the connecting column 1311, and the connecting plate 1312 is used to extend the length of the connecting member 131 and reduce the distance between the scraper 132 and the inner wall of the barrel 110. By providing the connecting plate 1312, the connecting plate 1312 is plate-shaped, and such a structure increases the overall stability of the connecting member 131 and reduces the deformation of the connecting member 131 during the slurry stirring process.
[0035] The connecting member 131 is connected to the rotating shaft 121 and is arranged to be inclined relative to the radial direction of the rotating shaft 121. Figure 1 As shown, the width direction of the connecting plate 1312 is parallel to the circumferential direction of the side wall of the barrel 110, and the connecting member 131 is inclined, which can accelerate the movement of the slurry in the discharge direction.
[0036] In one embodiment, the connecting member 131 is disposed at 1 / 3 of the distance between two adjacent stirring blades, and utilizes the eddy current effect when the rotating shaft 121 rotates to actively "suck" the slurry into the stirring area instead of passively scraping it.
[0037] In some embodiments, the scraper 132 is connected to the side of the connecting member 131 away from the rotating shaft 121. In the radial direction of the rotating shaft 121, the scraper 132 is arranged on the side of the stirring blade 122 close to the barrel 110, and is spaced apart from the stirring blade 122. In this way, sufficient space is reserved for installing the scraper 132 to avoid interference between the scraper 132 and the stirring blade 122. At the same time, it can also speed up the pushing of the slurry from the side wall of the barrel 110 to the stirring blade 122, thereby improving the scraping effect.
[0038] In some embodiments, Figure 1 As shown, the barrel 110 is provided with a feed port 111 and a discharge port 112 , which are spaced apart along the axial direction of the rotating shaft 121 , and the end of the connecting member 131 away from the rotating shaft 121 is inclined toward the feed port 111 .
[0039] like Figure 1 As shown, the feed port 111 is arranged at the upper left of the barrel 110, and the discharge port 112 is arranged at the lower right of the barrel 110. The end of the connecting member 131 away from the rotating shaft 121 is inclined toward the direction close to the feed port 111, so that the scraper 132 is inclined relative to the inner wall of the barrel 110. The scraper 132 provides an oblique inward force for the slurry attached to the bottom wall of the barrel 110, so that the slurry moves toward the direction of the rotating shaft 121. Under the stirring action of the rotating shaft 121 and the stirring blade 122, the slurry moves from the feed port 111 to the discharge port 112.
[0040] See also Figure 1 , above the rotating shaft 121, the end of the connecting member 131 away from the rotating shaft 121 is inclined toward the direction close to the feed port 111, and below the rotating shaft 121, the end of the connecting member 131 away from the rotating shaft 121 is inclined toward the direction away from the feed port 111. However, when the lower connecting member 131 rotates to the upper position, the end of the connecting member 131 away from the rotating shaft 121 becomes inclined toward the direction close to the feed port 111, so that all the connecting members 131 are set in one direction.
[0041] In some embodiments, the scraper 132 includes at least one scraper 1321 , and the scraper 1321 includes a main body 13211 and a blade 13212 . The main body 13211 is connected to the connector 131 , and the blade 13212 is connected to a side of the main body 13211 away from the connector 131 .
[0042] In one embodiment, if Figure 2As shown, the scraper 132 includes a scraper 1321, a main body 13211 is plate-shaped, the main body 13211 and the connecting plate 1312 are spliced to form a structure radially inclined relative to the rotating shaft 121, and the blade 13212 is arranged at the end of the inclined structure.
[0043] The blade 13212 is made of a polymer material. For example, the blade 13212 is made of polytetrafluoroethylene (PTFE), which has high wear resistance and a wear rate of ≤0.5 mm / thousand hours.
[0044] The surface of the blade 13212 is polished by mechanical polishing to reduce the adhesion of slurry. At the same time, an anti-adhesion coating is provided on the surface of the main body 13211 to reduce the adhesion of slurry and extend the practical life of the scraper 1321.
[0045] In some embodiments, the blade portion 13212 and the main body portion 13211 are connected in a detachable manner, such as a bolt connection, to facilitate replacement of a damaged blade portion 13212 .
[0046] like Figure 2 , Figure 4 and Figure 5 As shown, the edge of the blade 13212 away from the rotation axis 121 is straight or curved. In one embodiment, when the edge of the blade 13212 away from the rotation axis 121 is curved, the curved edge of the blade 13212 matches the circumferential curve of the side wall of the barrel 110 to avoid stress concentration.
[0047] In some embodiments, the edge of the blade 13212 is in an arc shape with a concave middle portion or a convex middle portion. In this way, when rotating, a small amount of slurry can flow through the concave portion between the blade 13212 and the side wall of the barrel 110, thereby avoiding rigid contact between the slurry and the blade 13212, automatically adjusting the pressure between the blade 13212 and the side wall of the barrel 110 and the pressure caused by the slurry on the blade 13212, reducing deformation of the blade 13212 during the scraping process, improving the scraping effect, and extending the service life of the blade 13212.
[0048] In some embodiments, the distance between the edge of the blade 13212 and the barrel 110 is L1, which satisfies: 10mm≤L1≤15mm. Such a distance can avoid excessive friction between the scraper 1321 and the side wall of the barrel 110, reduce wear, and enable the scraper 1321 to effectively scrape off the accumulated slurry. This distance can also adapt to the irregular shape surface that may exist on the side wall of the barrel 110, so that the scraper 1321 can better adapt to different working environments.
[0049] The distance L1 between the edge of the blade 13212 and the barrel 110 is not limited to the exemplified values and is 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, etc.
[0050] It is understandable that some filling slurries have high viscosity, and during the stirring process, the slurry accumulates into clumps at the bottom of the barrel 110. It is difficult to scoop up the clumped slurry using only a single scraper 1321, and the scraping effect is poor.
[0051] To solve the above problem, a plurality of scrapers 1321 are provided, wherein a plurality of main bodies 13211 are connected close to the end of the connecting member 131 , and a plurality of main bodies 13211 are spaced apart from the end of the connecting member 131 .
[0052] For example, Figure 3 As shown, there are three scrapers 1321 , which are respectively connected to the connecting plate 1312 , and the main body 13211 is plate-shaped. The three main bodies 13211 cross at the ends close to the connecting member 131 and are connected to the connecting member 131 , simplifying the structure of the scraper 132 .
[0053] The multiple main bodies 13211 are spaced apart from the ends of the connecting member 131, so that the multiple blades 13212 are separated, and the multiple blades 13212 simultaneously scrape the slurry attached to the inner wall of the barrel 110. The same scraper 1321 scrapes the same part of the bottom wall of the barrel 110 three times during one rotation of the rotating shaft 121, making it easier to scrape off the slurry that has clumped on the bottom wall of the barrel 110, thereby improving the scraping efficiency and the scraping effect.
[0054] In one embodiment, when the connecting member 131 has a plurality of blades 13212. Figure 3 As shown, a scraper assembly 130 has three blades 13212, and the edge shapes of the three blades 13212 may be different. Figure 3 The edge of the blade 13212 (not shown) is straight, and the edge of one blade 13212 is an arc shape with a concave middle portion, see Figure 4 The edge of the middle blade 13212 is an arc-shaped edge with a concave middle portion, see Figure 5 The edge of the middle blade portion 13212.
[0055] In some embodiments, when there are multiple scrapers 1321 , the edge shapes of at least two blades 13212 are complementary.
[0056] Complementary means that the edge shapes of the two edge portions 13212 can be spliced. Figure 4 The edge of the middle blade 13212 and Figure 5The edge of the middle blade 13212 can be spliced, and the curved edges of the two blades 13212 are spliced to form a rectangle. In this way, the blade 13212 allows a small amount of slurry to flow through the depression between the blade 13212 and the side wall of the barrel 110, avoiding rigid contact between the slurry and the blade 13212, and extending the service life of the blade 13212. In addition, by complementing the edge shapes of the two blades 13212, each part of the side wall of the barrel 110 is scraped, so that the scraping effect of the connector 131 with multiple blades 13212 is more uniform.
[0057] In some embodiments, in the axial direction of the rotating shaft 121, the width of the connecting member 131 is L2, and the distance between two adjacent stirring blades 122 is L3, satisfying: 0.56≤L2 / L3≤0.67. In this way, the scraping coverage range of the scraper assembly 130 can be increased without hindering the flow of slurry.
[0058] Specifically, L2 / L3 is 0.56, 0.57, 0.58, 0.59, 0.6, 0.61, 0.62, 0.63, 0.64, 0.65, 0.66, 0.67, etc., but is not limited to the exemplified values.
[0059] In some embodiments, in the rotation direction of the rotating shaft 121, there is a phase difference angle between the stirring blade 122 and the scraper assembly 130, and the stirring blade 122 is 10° to 20° ahead of the scraper assembly 130. The local negative pressure generated by the rotation of the stirring blade 122 is used to guide the material scraped by the scraper 1321 to quickly enter the middle of the barrel 110 and be taken away by the stirring blade 122, thereby improving the stirring efficiency.
[0060] In some embodiments, no scraper assembly 130 is disposed between two adjacent stirring blades 122 near the feed port 111 or the discharge port 112. This prevents the scraper assembly 130 from interfering with the slurry flow, thereby allowing the slurry to flow smoothly.
[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0062] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present application.
Claims
1. A slurry stirring device, characterized in that: include: Barrel; A stirring assembly is disposed in the barrel, the stirring assembly comprises a rotating shaft and a plurality of stirring blades, and the plurality of stirring blades are arranged at intervals along the axial direction of the rotating shaft; A plurality of scraper assemblies are connected to the rotating shaft, each of the scraper assemblies is arranged between two adjacent stirring blades, the scraper assemblies are spaced apart from the stirring blades, and in the radial direction of the rotating shaft, the spacing distance between the end of the scraper assembly and the barrel is smaller than the spacing distance between the end of the stirring blade and the barrel.
2. The slurry stirring device according to claim 1, characterized in that: The scraper assembly comprises: A connecting member, the connecting member is connected to the rotating shaft and is arranged to be inclined relative to the radial direction of the rotating shaft; A scraper is connected to the side of the connecting member away from the rotating shaft. In the radial direction of the rotating shaft, the scraper is arranged on the side of the stirring blade close to the barrel and is spaced apart from the stirring blade.
3. The slurry stirring device according to claim 2, characterized in that: The barrel is provided with a feed port and a discharge port, the feed port and the discharge port are spaced apart along the axial direction of the rotating shaft, and the end of the connecting member away from the rotating shaft is inclined toward the feed port.
4. The slurry stirring device according to claim 2, characterized in that: The scraper member includes at least one scraper, and the scraper includes a main body and a blade. The main body is connected to the connecting member, and the blade is connected to a side of the main body away from the connecting member.
5. The slurry stirring device according to claim 4, characterized in that: The edge of the blade portion is in an arc shape with a concave middle portion or an arc shape with a convex middle portion.
6. The slurry stirring device according to claim 4, characterized in that: The distance between the edge of the blade and the barrel is L1, which satisfies: 10mm≤L1≤15mm.
7. The slurry stirring device according to claim 4, characterized in that: When there are multiple scrapers, multiple main bodies are connected close to the end of the connecting member, and multiple main bodies are spaced apart from the end of the connecting member.
8. The slurry stirring device according to claim 5, characterized in that: When there are plural scrapers, the edge shapes of at least two of the blades are complementary.
9. The slurry stirring device according to any one of claims 2 to 8, characterized in that: In the axial direction of the rotating shaft, the width of the connecting member is L2, and the distance between two adjacent stirring blades is L3, satisfying: 0.56≤L2 / L3≤0.
67.
10. The slurry stirring device according to any one of claims 1 to 8, characterized in that: In the rotation direction of the rotating shaft, there is a phase difference angle between the stirring blade and the scraping assembly, and the stirring blade leads the scraping assembly by 10° to 20°.