Mill feeding device and mill system
By introducing a sealing structure of sleeves and flanges into the grinder feeding device, the problem of material backflow at the feed end of the traditional grinder is solved, effectively collecting materials and reducing waste, and improving processing efficiency and safety.
Patent Information
- Application Number
- CN202422141881.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-09-02
AI Technical Summary
During bauxite processing, the feed end of the traditional slurry mill is not completely closed to the grinder body, causing material backflow, affecting the ore volume, increasing power consumption, and may cause safety and environmental protection problems.
A grinder feeding device is designed, including a feed pipe, a seal and a feeding mechanism. The seal is composed of a sleeve and a flange. The sleeve is connected to the feeding pipe, and the flange is softly connected to the inner wall of the mill. The feeding mechanism is arranged under the feeding tube to collect the overflowing slurry.
Reduces material overflow, avoids waste, reduces power consumption, and improves safety and environmental protection performance.
Smart Images
Figure CN223263973U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of mill technology, and specifically relates to a mill feeding device and a mill system. Background Art
[0002] The Bayer process is a common method for extracting alumina from bauxite. This process involves mixing bauxite with a blending solution and grinding it through a slurry mill to create a slurry that meets the process requirements. The slurry mill is a key piece of equipment in this process, grinding the bauxite to the desired fineness.
[0003] In traditional slurry mill operation, bauxite and mixing fluid are added through the mill's feed port, while the ground slurry is discharged through the discharge port. However, because the feed port is not completely sealed from the mill body, and the parabolic motion of the grinding body during grinding, material backflow can occur at both the feed and discharge ports. This backflow not only reduces ore loading and increases mill power consumption, but can also pose safety and environmental concerns.
[0004] Traditional methods mostly use a receiving hopper, which cannot completely avoid material spillage and is relatively difficult to process after final reception. Therefore, the traditional method has obvious disadvantages. Summary of the Invention
[0005] In order to solve the above technical problems, the present application provides a mill feeding device and a mill system.
[0006] The technical solution adopted to achieve the purpose of this application is a mill feeding device, comprising:
[0007] a feed pipe extending into the feed port of the mill and communicating with the feed port of the mill;
[0008] The sealing member includes a sleeve and a flange connected in sequence, wherein the sleeve is sleeved on and connected to the feed pipe, and a gap is set between the sleeve and the feed port of the mill; the flange is located inside the feed port of the mill and is softly connected to the inner wall of the feed port of the mill;
[0009] The material receiving mechanism is arranged at the lower end of the feed pipe and is spaced apart from the outer wall of the feed port of the mill.
[0010] In some embodiments, the axis of the sleeve and the flange are arranged perpendicularly.
[0011] In some embodiments, the sleeve is made of metal; the flange is made of rubber.
[0012] In some embodiments, the sleeve is sleeved on the outer wall of the feeding pipe and is welded to the feeding pipe;
[0013] The sleeve and the flange are provided with a plurality of corresponding connection holes, and the sleeve and the flange are fixedly connected by fasteners passing through the connection holes.
[0014] In some embodiments, the outer diameter of the sleeve is smaller than the aperture of the feed port;
[0015] The outer edge of the flange is annular, and the outer edge of the flange contacts the inner wall of the feed port of the mill to cover the gap between the sleeve and the feed port of the mill.
[0016] In some embodiments, the material receiving mechanism includes a material receiving box, which is arranged below the feed pipe and has a gap with the end surface of the feed port of the grinder.
[0017] In some embodiments, the cross section of the material receiving box is arc-shaped, and the end surface of the material receiving box matches the arc-shaped surface of the feeding tube, so that the material receiving box fits the feeding tube.
[0018] In some embodiments, the material receiving box is provided with a mother liquid feed port and a mother liquid discharge port;
[0019] The material receiving mechanism further includes a mother liquid pipeline connected to the mother liquid feed port and a discharge pipeline connected to the discharge port;
[0020] The mother liquor pipeline and the discharge pipeline are arranged in parallel.
[0021] In a second aspect of the present application, a mill system is provided, comprising:
[0022] The mill body is equipped with a feed inlet and a discharge end;
[0023] An exhaust assembly is provided at the discharge end;
[0024] The above-mentioned mill feeding device is arranged at the feed port.
[0025] In some embodiments, the exhaust assembly includes an exhaust duct connected to the discharge end and an exhaust fan provided in the exhaust duct.
[0026] As can be seen from the above technical solution, the present application provides a mill feeding device and a mill system, wherein the mill feeding device includes a feed pipe, a seal and a material receiving mechanism, the feed pipe extends into the feed port of the mill and is connected to the feed port of the mill; the seal includes a sleeve and a flange connected in sequence, the sleeve is sleeved on the feed pipe and connected to the feed pipe, and a gap is set between the sleeve and the feed port of the mill; the flange is located inside the feed port of the mill and is softly connected to the inner wall of the feed port of the mill; the material receiving mechanism is located at the lower end of the feed pipe and is set with a gap between the outer wall of the feed port of the mill. By arranging seals between the feed pipe and the feed port of the mill, the overflow of the slurry is reduced to a certain extent, and by arranging the material receiving mechanism below the feed pipe, the overflowed slurry is collected to avoid waste. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 Schematic diagram of the structure of the grinding system in the embodiment of the present application.
[0028] Figure 2 This is a schematic structural diagram of the mill feeding device in an embodiment of the present application.
[0029] Figure 3 Schematic diagram of the structure of the sealing member in the embodiment of the present application.
[0030] Figure 4 This is a side view of the material receiving mechanism and the feed pipe according to an embodiment of the present application.
[0031] Figure 5 This is a side view of the feed pipe and the feed port of the mill according to an embodiment of the present application.
[0032] Explanation of the reference numerals: 100 - mill feeding device, 110 - feeding pipe, 120 - sealing element, 121 - sleeve, 122 - flange, 130 - receiving mechanism, 131 - receiving box, 132 - mother liquor pipeline, 133 - discharge pipeline; 134 - mother liquor feeding port, 200 - mill system, 210 - mill body, 211 - feeding port, 212 - discharge end, 220 - exhaust assembly, 221 - exhaust fan, 222 - exhaust pipeline. DETAILED DESCRIPTION
[0033] In order to enable those skilled in the art to which this application belongs to understand this application more clearly, the technical solution of this application is described in detail below through specific embodiments in conjunction with the accompanying drawings.
[0034] In the embodiment of the present application, a mill feeding device is provided, as shown in the attached Figure 1 、 Figure 2 and Figure 3As shown, the mill feeding device 100 includes a feeding pipe 110, a sealing member 120 and a material receiving mechanism 130, wherein the feeding pipe 110 extends into the feeding port 211 of the mill and is communicated with the feeding port 211 of the mill; the sealing member 120 includes a sleeve 121 and a flange 122 connected in sequence, the sleeve 121 is sleeved on the feeding pipe 110 and connected to the feeding pipe 110, and a gap is set between the sleeve 121 and the feeding port 211 of the mill; the flange 122 is located inside the feeding port 211 of the mill and is softly connected to the inner wall of the feeding port 211 of the mill; the material receiving mechanism 130 is arranged at the lower end of the feeding pipe 110 and is set with a gap between the outer wall of the feeding port 211 of the mill.
[0035] The feed pipe 110 and the feed port 211 of the mill are clearance-fitted, as shown in FIG. Figure 5 As shown, the distance between the feed pipe 110 and the feed inlet 211 of the mill is d. Therefore, the material entering the feed inlet 211 of the mill through the feed pipe 110 may overflow from the gap. Therefore, by providing a seal 120 between the feed inlet 211 of the mill and the feed pipe 110, the amount of grinding slurry overflowing from the gap can be reduced to a certain extent.
[0036] like Figure 3 As shown, the sealing member 120 includes a sleeve 121 and a flange 122. In some embodiments, in order to ensure that the sleeve 121 is sleeved on the feed pipe 110, the inner diameter of the sleeve 121 is larger than the outer diameter of the feed pipe 110. In other embodiments, in order to ensure the connection fixity, the sleeve 121 and the feed pipe 110 can be fixed by welding. After the sleeve 121 is sleeved on the feed pipe 110, it is fixed by welding. On the one hand, it can ensure that the sleeve 121 is connected to the feed pipe 110 and prevent the sleeve 121 from falling off the feed pipe 110 due to shaking or other reasons; on the other hand, it can ensure the sealing of the connection between the sleeve 121 and the feed pipe 110. After the sleeve 121 is connected to the feed pipe 110, the welding at the connection between the sleeve 121 and the feed pipe 110 reduces the gap between the mill and the feed pipe 110.
[0037] like Figure 1 and Figure 2 As shown, in order to ensure the normal operation of the mill, the sleeve 121 is connected to the feed pipe 110 and a gap is set with the mill. The sleeve 121 can reduce the gap between the sleeve 121 and the feed pipe 110 to a certain extent, but in order to ensure the normal operation of the mill, there must be a gap between the sleeve 121 and the mill.
[0038] like Figure 2As shown, in order to further reduce the gap between the feed pipe 110 and the mill, the flange 122 of the sleeve 121 is softly connected to the feed port 211 of the mill. The soft connection here is inside the mill. The flange 122 can be made of a flexible material so that it can be connected to the inner wall of the mill. The flexible material or structure can allow the flange 122 to produce a certain displacement or deformation during the rotation of the mill, while maintaining the seal between the flange 122 and the feed port 211 and the integrity of the flange 122 structure. It can not only ensure the normal operation of the mill, but also further fill the gap between the feed pipe 110 and the feed port 211 of the mill through the soft connection between the flange 122 and the feed port 211 of the mill, and to a certain extent reduce the amount of material overflowing from the gap during the grinding process.
[0039] like Figure 1 and Figure 2 As shown, since there may be a certain amount of overflow of the grinding slurry in the mill, in some embodiments, a material receiving mechanism 130 is provided at the lower end of the feed pipe 110 to ensure that the grinding slurry overflowing from the mill can be forcibly recovered, thereby reducing material waste to a certain extent.
[0040] like Figure 1 and Figure 2 As shown, in some embodiments, the axis of the sleeve 121 and the flange 122 are arranged vertically. Since the axis of the feed pipe 110 is arranged vertically to the plane where the feed port 211 of the mill is located, the sleeve 121 is sleeved on the feed pipe 110, and the axis of the sleeve 121 is parallel to the axis of the feed pipe 110. At this time, the axis of the sleeve 121 is perpendicular to the flange 122, which can ensure that the flange 122 is parallel to the plane where the feed port 211 of the mill is located. At this time, the flange 122 can cover the gap between the feed pipe 110 and the feed port 211 of the mill.
[0041] like Figure 1 and Figure 2 As shown, in some embodiments, the sleeve 121 is made of metal; the sleeve 121 can be made of iron, as long as the sleeve 121 is welded to the feed pipe 110. The flange 122 is made of rubber, which can ensure a flexible connection between the flange 122 and the mill, play a sealing role, and prevent the mill material from overflowing.
[0042] like Figure 1 and Figure 2As shown, in some embodiments, the sleeve 121 is sleeved on the outer wall of the feed pipe 110 and is welded to the feed pipe 110. The connection between the sleeve 121 and the feed pipe 110 can be connected by welding, which can reduce the gap between the sleeve 121 and the feed pipe 110. In some embodiments, the shape of the sleeve 121 matches the shape of the feed pipe 110. If the feed pipe 110 is cylindrical, the shape of the sleeve 121 is also cylindrical.
[0043] like Figure 2 and Figure 3 As shown, in other embodiments, the sleeve 121 and the flange 122 are provided with a plurality of corresponding connection holes, and the sleeve 121 and the flange 122 are fixedly connected by fasteners passing through the connection holes. That is, the sleeve 121 and the flange 122 can be connected and fixed by fasteners such as bolts and screws.
[0044] like Figure 1 and Figure 2 As shown, in some embodiments, the outer diameter of the sleeve 121 is smaller than the aperture of the feed port. After the sleeve 121 is sleeved on the feed pipe 110, a gap is set between the sleeve 121 and the feed port 211 of the mill to prevent the sleeve 121 from affecting the normal operation of the mill.
[0045] like Figure 1 and Figure 3 As shown, in some embodiments, the outer edge of the flange 122 is annular, and the outer edge of the flange 122 contacts the inner wall of the feed port 211 to cover the gap between the sleeve 121 and the feed port 211 of the mill. The outer edge of the flange 122 can be a shape that matches the feed port 211 of the mill, and can be circular or rectangular, etc., and this application does not impose any special restrictions. It is only necessary to ensure that the outer edge of the flange 122 can cover the gap between the sleeve 121 and the feed port 211 of the mill. The flange 122 can cover the gap between the sleeve 121 and the feed port 211 of the mill, which can further prevent the overflow of materials when the mill is in working condition.
[0046] like Figure 1 and Figure 2 As shown, in some embodiments, the material receiving mechanism 130 includes a material receiving box 131, which is disposed below the feed pipe 110 and is spaced from the end face of the feed port 211 of the mill. This ensures that the grinding slurry overflowing from the mill can be forcibly recovered, thereby reducing the waste of grinding slurry to a certain extent.
[0047] like Figure 1 and Figure 4As shown, in some embodiments, the cross section of the material receiving box 131 is arc-shaped, and the end surface of the material receiving box 131 matches the arc-shaped surface of the feeding tube 110, so that the material receiving box 131 fits the feeding tube 110. This ensures that the material receiving box 131 can collect as much material as possible to avoid material waste.
[0048] like Figure 1 and Figure 4 As shown, in other embodiments, the material receiving box 131 is provided with a mother liquor feed port 134 and a material discharge port; the material receiving mechanism 130 further includes a mother liquor pipeline 132 connected to the mother liquor feed port 134 and a material discharge port 133 connected to the material discharge port; the mother liquor pipeline and the material discharge pipeline can be arranged in parallel. In some embodiments, the feed into the feed pipe 110 is generally ore and mother liquor, and the mother liquor pipeline 132 contains pure liquid. When the material is collected in the material receiving box 131, it can be flushed through the mother liquor pipeline to ensure that the material collected in the material receiving box 131 can flow smoothly through the material discharge port 133. In some embodiments, the mother liquid feed port 134 and the discharge port are both located at the upper end of the bottom of the feed box 131. The size of the mother liquid pipe 132 can be smaller than the size of the discharge pipe 133. The mother liquid pipe 132 passes into a liquid with a certain pressure. The liquid in the mother liquid pipe 132 can be flushed through the mother liquid pipe. The size of the mother liquid pipe 132 is smaller than the size of the discharge pipe 133. Under the premise of ensuring that the material collected by the receiving box 131 can be flushed, materials can be saved.
[0049] In some embodiments, the material receiving box 131 , the mother liquid pipeline 132 and the discharge pipeline 133 can be fixedly connected by a bracket to fix the material receiving box 131 , the mother liquid pipeline 132 and the discharge pipeline 133 .
[0050] In a second aspect of the present application, a mill system 200 is provided, comprising a mill body 210, an exhaust assembly 220 and the above-mentioned mill feeding device 100. The mill body 210 is provided with a feed port 211 and a discharge end 212; the exhaust assembly 220 is provided at the discharge end, and the mill feeding device 100 is provided at the feed port 211.
[0051] like Figure 1 and Figure 2 As shown, in some embodiments, the exhaust assembly 220 includes an exhaust duct 222 connected to the discharge end and an exhaust fan 221 provided in the exhaust duct 222. The discharge end of the mill is provided with a discharge pipe, wherein the discharge pipe further branches off an exhaust duct 222. By providing the exhaust duct 222 at the discharge end and the exhaust fan 221 on the exhaust duct 222, when feeding begins at the feed inlet 211 of the mill, the exhaust fan 221 can be turned on to exhaust the air in the mill, thereby forming a negative pressure in the mill, thereby ensuring forced feeding of the feed inlet 211 and reducing material spillage from the feed inlet 211.
[0052] Through the above embodiments, the present application has the following beneficial effects or advantages:
[0053] 1) The present application reduces the overflow of slurry to a certain extent by providing a seal 120 between the feed pipe 110 and the feed port 211 of the mill, and at the same time, by providing a material receiving mechanism 130 below the feed pipe 110, the overflowed slurry is collected to avoid waste.
[0054] 2) The present application sets an exhaust assembly 220 at the discharge end 212, and extracts the air in the mill through the exhaust fan 221, so that a negative pressure is formed in the mill, thereby ensuring forced feeding of the feed port 211, reducing the material from being spilled from the feed port 211, and reducing the waste of material.
[0055] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.
[0056] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.
Claims
1. A mill feeding device, characterized in that: include: a feed pipe extending into the feed port of the mill and communicating with the feed port of the mill; The sealing member includes a sleeve and a flange connected in sequence, wherein the sleeve is sleeved on and connected to the feed pipe, and a gap is set between the sleeve and the feed port of the mill; the flange is located inside the feed port of the mill and is softly connected to the inner wall of the feed port of the mill; The material receiving mechanism is arranged at the lower end of the feed pipe and is spaced apart from the outer wall of the feed port of the mill.
2. The mill feeding device according to claim 1, characterized in that The axis of the sleeve and the flange are arranged perpendicularly.
3. The mill feeding device according to claim 1, characterized in that The sleeve is made of metal; the flange is made of rubber.
4. The mill feeding device according to claim 3, characterized in that The sleeve is sleeved on the outer wall of the feed pipe and is welded to the feed pipe; The sleeve and the flange are provided with a plurality of corresponding connection holes, and the sleeve and the flange are fixedly connected by fasteners passing through the connection holes.
5. The mill feeding device according to any one of claims 1 to 4, characterized in that: The outer diameter of the sleeve is smaller than the aperture of the feed port; The outer edge of the flange is annular, and the outer edge of the flange contacts the inner wall of the feed port of the mill to cover the gap between the sleeve and the feed port of the mill.
6. The mill feeding device according to any one of claims 1 to 4, characterized in that: The material receiving mechanism includes a material receiving box, which is arranged below the feed pipe and has a gap with the end surface of the feed port of the grinder.
7. The mill feeding device according to claim 6, characterized in that The cross section of the material receiving box is arc-shaped, and the end surface of the material receiving box matches the arc-shaped surface of the feeding pipe, so that the material receiving box and the feeding pipe are fitted together.
8. The mill feeding device according to claim 6, characterized in that The material receiving box is provided with a mother liquid feed port and a material discharge port; The material receiving mechanism further includes a mother liquid pipeline connected to the mother liquid feed port and a discharge pipeline connected to the discharge port; The mother liquor pipeline and the discharge pipeline are arranged in parallel.
9. A grinding mill system, characterized in that: include: The mill body is equipped with a feed inlet and a discharge end; An exhaust assembly is provided at the discharge end; The mill feeding device according to any one of claims 1 to 8, wherein the mill feeding device is arranged at the feed port.
10. The grinding mill system according to claim 9, characterized in that The exhaust assembly includes an exhaust duct communicated with the discharge end and an exhaust fan arranged in the exhaust duct.