A central support for a concentrator

Abstract

The utility model discloses a center support of concentrator belongs to the field of supporting part of concentrator, the device includes the support body, the support body has the bearing mounting hole for installing bearing and the frame connecting portion for being connected with the frame of concentrator, the support body is the split type structure, including the upper seat and the lower seat, be equipped with the stepped joint surface between the bottom of upper seat and the top of lower seat, be equipped with the lubricating hole on the lower seat, the top of lower seat is equipped with the annular oil tank, the lubricating hole is communicated with the annular oil tank, with the annular oil tank and bearing mounting hole intercommunication, through the split type structure design of adoption between upper seat and lower seat, only need to disassemble the bolt and replace upper seat or lower seat, do not need to replace the support as a whole, in addition, through the lubricating hole and annular oil tank and bearing mounting hole intercommunication, can directly inject the lubricating grease through the lubricating hole and reach the bearing evenly through the annular oil tank, realized the bearing lubrication without disassembling the support, reduced the downtime maintenance time.

Description

Technical Field

[0001] This utility model relates to the field of concentrator support components, and in particular to a central support for a concentrator. Background Technology

[0002] A thickener is a solid-liquid separation device widely used in mining, chemical, and environmental protection fields. Its core function is to use the low-speed rotation of a rotating drum to cause solid particles in the suspension to settle to the drum wall using gravity or centrifugal force. The solid material is then scraped off by a scraping device, ultimately reducing the water content of the suspension and increasing the concentration of solid materials. It is a key pre-processing device for subsequent material processing or wastewater treatment. The central support is the core support and positioning component for the stable operation of the thickener drum. Due to the large size of the thickener drum and its need to withstand its own weight, the weight of the material inside the drum, and the radial impact force generated by rotation, it must be connected to the frame through the central support to ensure stable rotation of the drum along a fixed axis. Therefore, the central support is the bridge component connecting the thickener frame and the drum.

[0003] The existing central support mounted on the thickener is often cast in one piece. The support is fixedly connected to the frame and drum of the thickener, without a separate design. Its working process is roughly as follows: the central support supports the drum by installing bearings through the inner hole, and bears the weight of the drum, the material load and the radial impact force. When the inner hole of the support wears due to the fit with the bearing, the entire support needs to be removed and replaced with a new support. At the same time, when lubricating the bearing, the support must be removed first before the internal bearing can be lubricated.

[0004] This leads to some shortcomings: First, when the inner hole of the support used to install the bearing is worn excessively, the entire center support needs to be disassembled and replaced, resulting in high maintenance costs. Second, when the bearing needs lubrication, the thickener must be shut down first, and then the center support must be disassembled, resulting in a long downtime for maintenance. Utility Model Content

[0005] The present invention provides a central support for a concentrator, which can solve the problem that the central support of a concentrator in the prior art needs to be replaced as a whole when it is worn.

[0006] A central support for a concentrator includes a support body having a bearing mounting hole for mounting a bearing and a frame connection portion for connecting to the concentrator frame. The support body is a split structure, including an upper support and a lower support. A stepped joint surface is provided between the bottom of the upper seat and the top of the lower seat; The lower seat is provided with a lubrication hole, and the top of the lower seat is provided with an annular oil groove. The lubrication hole is connected to the annular oil groove, and the annular oil groove is connected to the bearing mounting hole.

[0007] Preferably, the upper seat and the lower seat are fixedly connected by bolts, and the bolts pass through the upper seat and are threadedly connected to the lower seat.

[0008] Preferably, there are multiple bolts, and the multiple bolts are evenly distributed along the circumferential direction of the upper seat.

[0009] Preferably, the stepped mating surface includes a lower convex step and an upper convex step, the lower convex step being located at the bottom of the upper seat and the upper convex step being located at the top of the lower seat, and the lower convex step and the upper convex step being adapted to fit together.

[0010] Preferably, the lower convex step has an inner wall facing the axis of the support body, and the upper convex step has an outer wall away from the axis of the support body, with the inner wall of the lower convex step abutting against the outer wall of the upper convex step.

[0011] Preferably, the lubrication hole extends radially along the lower seat and penetrates the side wall of the lower seat, with one end extending to the outer circular surface of the lower seat and the other end extending to the inner circular surface of the lower seat.

[0012] Preferably, the inner wall of one end of the lubrication hole extending to the outer circular surface of the lower seat is provided with a thread, and a grease nipple is connected to the thread, the grease nipple being in communication with the lubrication hole.

[0013] Preferably, the annular oil groove is formed on the side of the lower seat top facing the stepped mating surface, and the annular oil groove is arranged around the outer periphery of the bearing mounting hole.

[0014] Preferably, both the upper and lower seats are annular structures, the axis of the upper seat coincides with the axis of the lower seat, and the bearing mounting hole is located in the inner hole of the upper seat.

[0015] Preferably, the frame connection portion is a mounting hole provided on the outer circular side wall of the lower seat, and the mounting hole extends along the axial direction of the lower seat.

[0016] The beneficial effects of this utility model are as follows: By adopting a split structure design between the upper and lower seats and achieving a detachable connection via bolts, when the inner hole of the upper seat wears, only the bolts need to be removed to replace the upper seat, eliminating the need to replace the entire support, thus reducing maintenance costs. Simultaneously, the stepped joint surface formed by the lower convex step at the bottom of the upper seat and the upper convex step at the top of the lower seat, with the inner wall of the lower convex step abutting against the outer wall of the upper convex step, increases the contact area and forms radial rigidity constraint, effectively resisting the radial impact force of the rotating drum, preventing relative misalignment between the upper and lower seats, and improving structural stability. Furthermore, the interconnection between the lubrication hole and the annular oil groove, and the connection between the annular oil groove and the bearing mounting hole, allows for direct injection of grease through the lubrication hole and even delivery to the bearing via the annular oil groove, enabling bearing lubrication without disassembling the support, reducing downtime for maintenance. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the central support of this concentrator; Figure 2 This is a front view of the center support of the concentrator; Figure 3 for Figure 2 A cross-sectional view along the cutting line AA.

[0018] Explanation of reference numerals in the attached figures: 1. Upper seat; 2. Lower seat; 3. Stepped mating surface; 31. Lower convex step; 32. Upper convex step; 4. Lubrication hole; 5. Annular oil groove; 6. Bolt; 7. Thread; 8. Grease fitting. Detailed Implementation

[0019] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0020] like Figures 1 to 3 As shown in the figure, the present invention provides a central support for a concentrator, including a support body, the support body having a bearing mounting hole for mounting a bearing and a frame connecting part for connecting with the concentrator frame, the support body having a split structure, including an upper support 1 and a lower support 2; A stepped joint surface 3 is provided between the bottom of the upper seat 1 and the top of the lower seat 2; The lower seat 2 is provided with a lubrication hole 4, and the top of the lower seat 2 is provided with an annular oil groove 5. The lubrication hole 4 is connected to the annular oil groove 5, and the annular oil groove 5 is connected to the bearing mounting hole.

[0021] The support body is designed as a split structure of upper support 1 and lower support 2, which are in contact through a stepped mating surface 3, allowing upper support 1 and lower support 2 to be separated independently. Because traditional supports are often made in one piece, they need to be replaced as a whole after wear. By splitting it into upper support 1 and lower support 2, when the inner hole of upper support 1 that mates with the bearing is worn, only upper support 1 needs to be replaced, without replacing the entire support, thus reducing maintenance costs. The stepped mating surface 3 makes the contact area between upper support 1 and lower support 2 larger than that of traditional planar mating surfaces, which can transmit axial loads more stably. The lubrication hole 4 of lower support 2 is connected to the annular oil groove 5 of upper support 1, and the annular oil groove 5 is connected to the bearing mounting hole, forming a lubrication channel from the outside to the bearing. In contrast, traditional supports require disassembly to lubricate the bearing. This design allows grease to be injected directly through the lubrication hole 4, which then reaches the bearing through the annular oil groove 5, simplifying the lubrication operation and reducing downtime for maintenance.

[0022] The upper seat 1 and the lower seat 2 are fixedly connected by bolts 6, which pass through the upper seat 1 and are threadedly connected to the lower seat 2.

[0023] The upper seat 1 and the lower seat 2 are detachably connected by bolts 6. After passing through the upper seat 1, the bolts 6 are tightened by engaging with the threaded holes of the lower seat 2. Since the upper seat 1 needs to be replaced or maintained regularly, the upper seat 1 and the lower seat 2 can be quickly separated by removing the bolts 6 without moving the concentrator drum or frame. This solves the problem of adjusting the position of the drum when disassembling and assembling the traditional integrated support, thus improving the efficiency of disassembly and assembly. At the same time, the tightening effect of the bolts 6 ensures that the upper seat 1 and the lower seat 2 fit tightly together during operation, avoiding relative displacement due to vibration.

[0024] The bolts 6 are provided in multiple quantities, and the multiple bolts 6 are evenly distributed along the circumferential direction of the upper seat 1.

[0025] Multiple bolts 6 are evenly distributed along the circumference of the upper seat 1. Each bolt 6 applies axial clamping force to the upper and lower seats. The multiple evenly distributed bolts 6 can make the joint surface of the upper seat 1 and the lower seat 2 more uniformly stressed, avoid the generation of local gaps, enhance the stability of the overall structure, and better resist the radial torque generated when the drum rotates, preventing the upper and lower seats from rotating relative to each other.

[0026] The stepped mating surface 3 includes a lower convex step 31 and an upper convex step 32. The lower convex step 31 is located at the bottom of the upper seat 1, and the upper convex step 32 is located at the top of the lower seat 2. The lower convex step 31 and the upper convex step 32 are fitted together.

[0027] The stepped mating surface 3 is composed of the lower convex step 31 of the upper seat 1 and the upper convex step 32 of the lower seat 2. The two are complementary in shape and fit tightly together. Traditional planar mating surfaces resist radial forces only through friction, which is prone to displacement after long-term use. The stepped structure increases the contact area of ​​the mating surface, and the interlocking of the steps can provide preliminary radial restraint, reduce the relative movement of the upper and lower seats caused by radial impact, and make the overall support more stable under force.

[0028] The lower convex step 31 has an inner wall facing the axis of the support body, and the upper convex step 32 has an outer wall away from the axis of the support body. The inner wall of the lower convex step 31 abuts against the outer wall of the upper convex step 32.

[0029] The inner wall of the lower convex step 31 and the outer wall of the upper convex step 32 abut against each other, forming a radial rigid constraint. Because the rotating drum will generate radial impact force, the traditional planar joint surface is difficult to effectively resist this force. However, the abutment of the side walls of the steps can directly offset the radial force through the mechanical structure, prevent the upper seat 1 and the lower seat 2 from being offset relative to each other in the radial direction, avoid the formation of gaps after long-term use, ensure the rotation accuracy of the drum, and reduce equipment vibration.

[0030] The lubrication hole 4 extends radially along the lower seat 2 and penetrates the side wall of the lower seat 2. One end of the lubrication hole 4 extends to the outer circular surface of the lower seat 2, and the other end extends to the inner circular surface of the lower seat 2.

[0031] The thread 7 at the outer end of the lubrication hole 4 is threaded to the grease nipple 8, so that the grease nipple 8 and the lubrication hole 4 form a closed channel. Since the grease needs to be injected with a special tool, the grease nipple 8 can be adapted to the grease injection tool to prevent grease leakage during grease injection. At the same time, the thread 7 connection ensures the stability of the grease nipple 8 and prevents it from falling off when the equipment vibrates, thus ensuring the reliability of the lubrication operation.

[0032] The lubrication hole 4 extends to the inner wall of one end of the outer circular surface of the lower seat 2 and is provided with a thread 7. A grease nipple 8 is connected to the thread (7) and the grease nipple 8 is in communication with the lubrication hole 4.

[0033] The thread 7 at the outer end of the lubrication hole 4 is threaded to the grease nipple 8, so that the grease nipple 8 and the lubrication hole 4 form a closed channel. Since the grease needs to be injected with a special tool, the grease nipple 8 can be adapted to the grease injection tool to prevent grease leakage during grease injection. At the same time, the thread 7 connection ensures the stability of the grease nipple 8 and prevents it from falling off when the equipment vibrates, thus ensuring the reliability of the lubrication operation.

[0034] The annular oil groove 5 is located on the top of the lower seat 2 on one side facing the stepped mating surface 3, and the annular oil groove 5 is arranged around the outer periphery of the bearing mounting hole.

[0035] The annular oil groove 5 is located on one side of the top mating surface of the lower seat 2 and surrounds the outer periphery of the bearing mounting hole. It is connected to both the lubrication hole 4 and the bearing mounting hole. Since the bearing needs to be lubricated evenly, the annular structure allows the grease flowing in from the lubrication hole 4 to be evenly distributed along the oil groove and then simultaneously enter the mating gap between the bearing and the mounting hole. This avoids uneven bearing wear caused by insufficient local lubrication and extends the service life of the bearing and the upper seat 1.

[0036] Both the upper seat 1 and the lower seat 2 are annular structures. The axis of the upper seat 1 coincides with the axis of the lower seat 2. The bearing mounting hole is located in the inner hole of the upper seat 1.

[0037] Both the upper seat 1 and the lower seat 2 are annular and coaxial. The bearing mounting hole is the inner hole of the upper seat 1. Since the concentrator drum rotates along the axis, the annular structure and coaxial design can ensure that the rotation center of the drum is consistent with the center of the support, avoiding the additional torque caused by eccentricity, reducing equipment vibration and component wear. At the same time, the annular structure can evenly distribute the load transmitted by the drum, enhancing the overall load-bearing capacity of the support.

[0038] The frame connection part is a mounting hole provided on the outer circular side wall of the lower seat 2, and the mounting hole extends along the axial direction of the lower seat 2.

[0039] The frame connection part is an axial mounting hole on the outer circular side wall of the lower seat 2, which is used to pass fasteners through to connect the frame. Since the support needs to be fixed on the frame to bear the load of the rotating drum, the axially extended mounting hole can make the fasteners tighten along the axis, pressing the lower seat 2 tightly on the frame, ensuring the stability of the connection, preventing the support from loosening due to vibration during operation, and enhancing the overall operational stability of the equipment.

[0040] In summary, the working principle of the central support for a concentrator provided in this embodiment of the present invention is as follows: the frame connecting part of the outer circular side wall of the lower support 2 is fastened to the frame of the concentrator, so that the support is fixed as a whole. The bearing is embedded in the inner hole of the upper support 1, and the inner ring of the bearing cooperates with the journal of the concentrator drum to achieve radial support and axial positioning of the drum. During assembly, the upper support 1 and the lower support 2 are fastened with bolts 6, so that the lower convex step 31 at the bottom of the upper support 1 and the upper convex step 32 at the top of the lower support 2 are tightly fitted at the stepped joint surface 3, and the inner side wall of the lower convex step 31 abuts against the outer side wall of the upper convex step 32. During operation, the weight of the drum and the material load are transmitted to the upper support 1 through the bearing, and then transmitted through the stepped joint surface 3. The force is transferred to the lower seat 2 and ultimately to the frame. The radial impact force generated by the rotation of the drum is directly offset by the contact between the side walls of the lower convex step 31 and the upper convex step 32, preventing radial offset between the upper seat 1 and the lower seat 2. When lubrication is required, grease is injected through the grease nipple 8 on the outer surface of the lower seat 2. The grease flows into the annular oil groove 5 at the bottom of the upper seat 1 through the lubrication hole 4. After being evenly distributed along the oil groove, it enters the mating clearance between the bearing and the inner hole of the upper seat 1 to achieve bearing lubrication. When the inner hole of the upper seat 1 is worn due to long-term mating with the bearing, it is only necessary to remove the bolt 6 to separate the upper seat 1 and the lower seat 2 and replace the upper seat 1 to complete the maintenance. There is no need to replace the entire support. The entire process does not require moving the drum or the frame, ensuring efficient and stable operation of the equipment.

[0041] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A central support for a concentrator, comprising a support body having a bearing mounting hole for mounting a bearing and a frame connecting portion for connecting to a concentrator frame, characterized in that: The support body is a split structure, including an upper support (1) and a lower support (2); A stepped joint surface (3) is provided between the bottom of the upper seat (1) and the top of the lower seat (2). The lower seat (2) is provided with a lubrication hole (4), and the top of the lower seat (2) is provided with an annular oil groove (5). The lubrication hole (4) is connected to the annular oil groove (5), and the annular oil groove (5) is connected to the bearing mounting hole.

2. The central support of the concentrator according to claim 1, characterized in that: The upper seat (1) and the lower seat (2) are fixedly connected by bolts (6), and the bolts (6) are inserted through the upper seat (1) and threadedly connected to the lower seat (2).

3. The central support of the concentrator according to claim 2, characterized in that: The bolts (6) are provided in multiple quantities, and the multiple bolts (6) are evenly distributed along the circumferential direction of the upper seat (1).

4. The central support of the concentrator according to claim 1, characterized in that: The stepped mating surface (3) includes a lower convex step (31) and an upper convex step (32). The lower convex step (31) is located at the bottom of the upper seat (1), and the upper convex step (32) is located at the top of the lower seat (2). The lower convex step (31) and the upper convex step (32) are fitted together.

5. The central support of the concentrator according to claim 4, characterized in that: The lower convex step (31) has an inner wall facing the axis of the support body, and the upper convex step (32) has an outer wall away from the axis of the support body. The inner wall of the lower convex step (31) abuts against the outer wall of the upper convex step (32).

6. The central support of the concentrator according to claim 1, characterized in that: The lubrication hole (4) extends radially along the lower seat (2) and penetrates the side wall of the lower seat (2). One end of the lubrication hole (4) extends to the outer circular surface of the lower seat (2) and the other end extends to the inner circular surface of the lower seat (2).

7. The central support of the concentrator according to claim 6, characterized in that: The lubrication hole (4) extends to the inner wall of one end of the outer circular surface of the lower seat (2) and is provided with a thread (7). A grease nipple (8) is connected to the thread (7) and the grease nipple (8) is in communication with the lubrication hole (4).

8. The central support of the concentrator according to claim 1, characterized in that: The annular oil groove (5) is opened on the top of the lower seat (2) on the side facing the stepped mating surface (3), and the annular oil groove (5) is arranged around the outer periphery of the bearing mounting hole.

9. The central support of the concentrator according to claim 1, characterized in that: Both the upper seat (1) and the lower seat (2) are annular structures. The axis of the upper seat (1) coincides with the axis of the lower seat (2). The bearing mounting hole is located in the inner hole of the upper seat (1).

10. The central support of the concentrator according to claim 1, characterized in that: The frame connection part is a mounting hole provided on the outer circular side wall of the lower seat (2), and the mounting hole extends along the axial direction of the lower seat (2).

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