End cover sealing device of permanent magnet drum magnetic separator

Abstract

The utility model discloses a permanent -magnetic cylinder type magnetic separator end cover sealing device, including the sealing assembly of installation in the both ends of magnetic separator, the magnetic separator includes the cylinder body of setting on the main shaft to and the end cover of symmetrical setting of cylinder body both ends, bearing sleeve, plummer block and bearing gland, the sealing assembly includes: sealing cone sleeve end cover, cone sleeve sealing ring and cone sleeve gland, through the one end embedding sealing cone sleeve end cover with cone sleeve sealing ring of cone sleeve gland, and the other end is connected with sealing cone sleeve end cover through bolt, and through the tightness of adjusting bolt is adjusted to the sealing effect of cone sleeve sealing ring, has guaranteed better sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of magnetic separator sealing technology, specifically to a permanent magnet drum-type magnetic separator end cover sealing device. Background Technology

[0002] Permanent magnet drum separators are used to separate iron ore from other impurities in metallic and non-metallic mines. They are widely used in mineral processing plants, building material waste separation plants, and cement plants, and can be divided into dry and wet types. Wet permanent magnet drum separators are used in mineral processing plants to separate iron minerals from ores. This equipment features high efficiency, energy saving, environmental friendliness, and convenient automated operation, making it a commonly used device in the iron removal process of mineral processing plants. In the mineral processing process, after the ore is ground in a ball mill, a suitable mixture of ore and water (referred to as slurry) flows to the processing platform. Mineral processing reagents are added to the slurry to separate other metals by flotation. The tailings flow evenly to the permanent magnet drum separator to begin the process. To ensure more thorough iron removal, approximately one-third of the drum diameter of the permanent magnet drum separator is immersed in the magnetic separator tank. Powered by an electric motor, the permanent magnet drum separator rotates. Inside the drum, permanent magnets attract iron-containing metals. As the drum rotates, the iron ore adsorbed on it is carried out of the area without a permanent magnetic field, and finally the iron ore falls off naturally, achieving the effect of separating the slurry from the iron ore.

[0003] During iron removal operations, the cylinder is directly immersed in the slurry tank. As the cylinder rotates, the slurry in the tank is drawn in and rotates along with the cylinder and the end caps at both ends. Due to inertia, the slurry adsorbed on the end caps rotates to its highest point and then flows downwards under gravity, passing through the bearing cap, bearing sleeve, and sealing cap. During use, the main shaft remains stationary, supporting the cylinder, while the cylinder rotates. After prolonged use, loosening may occur between the main shaft and the sealing cap. At this time, water or slurry can enter the bearing sleeve through the gap between the main shaft and the sealing cap, and then enter the self-aligning roller bearing. This can lead to damage to the self-aligning roller bearing due to poor lubrication or foreign objects inside the bearing.

[0004] A search revealed that Chinese utility model patent CN202199420U discloses a drum end cover with a water-retaining ring, comprising an end cover 1, a water-retaining ring 2, a bearing sleeve 3, a bearing 4, a main shaft 5, a groove 6, and a drum 7. While this patent can prevent corrosion of the main shaft, bearings, and other transmission components caused by the downward flow of slurry, it still has the following technical drawbacks:

[0005] On the one hand, only a water-retaining ring is installed at the end cap, and the bearing sleeve and the end cap are fixed with bolts. After long-term use, there is still a situation where the bolts loosen, causing gaps between the end cap and the bearing sleeve, which in turn allows slurry to enter the bearing sleeve and cause corrosion to the bearing.

[0006] On the other hand, the slurry is diverted only by setting a water-blocking ring and the groove structure formed between the water-blocking ring and the end cap. Without setting a sealing structure to protect the bearing from airtightness, the bearing is still at risk of rust and corrosion.

[0007] The key to solving the above technical problems lies in developing a permanent magnet drum-type magnetic separator end cover sealing device with good sealing performance and strong specificity, which still has gaps and poor sealing effect. Summary of the Invention

[0008] In view of the shortcomings of the above-mentioned background technology, this utility model has made improvements and innovations, aiming to provide a sealing device for the end cover of a permanent magnet drum magnetic separator. By setting a sealing component, a better sealing effect is achieved. The conical sleeve pressure ring cooperates with the conical sleeve sealing ring. By adjusting the conical sleeve pressure cover bolt, the conical sleeve pressure cover squeezes the conical sleeve sealing ring to achieve a better sealing effect.

[0009] Another objective of this invention is to achieve a better sealing effect by setting the interior of the sealing cone sleeve end cap to be a pen-shaped cylindrical-cone assembly and using it together with a matching cone sleeve sealing ring. The conical end presses against the contact end of the sealing cone sleeve end cap, and the deformation caused by the pressing causes a sealing structure to be formed inside the sealing cone sleeve end cap.

[0010] Another objective of this invention is to provide a first ring and a second ring on the sealing cone sleeve end cap, and to provide a skeleton oil seal between the sealing cone sleeve end cap and the bearing cap, so that the slurry carried by inertia is diverted through the space between the first ring and the second ring, thereby reducing slurry residue and achieving a better sealing effect.

[0011] To solve the above problems and achieve the above-mentioned objectives, this utility model is implemented by adopting the following design structure and the following technical solution:

[0012] A permanent magnet drum-type magnetic separator end cover sealing device includes sealing assemblies installed at both ends of the magnetic separator. The magnetic separator includes a drum body sleeved on the main shaft, and end covers, bearing sleeves, self-aligning bearings, and bearing caps symmetrically arranged at both ends of the drum body. The sealing assemblies include:

[0013] The sealing cone sleeve end cap has an inner wall that is a pen-shaped cylindrical-conical assembly. The opening end is cylindrical and the contact end is conical. The inner cylindrical-conical assembly matches the rubber sealing cone sleeve sealing ring, and its contact end is embedded in a pre-set groove in the middle of the bearing cover.

[0014] The cone sleeve sealing ring is a cylindrical-conical assembly with a length shorter than that of the sealing cone sleeve end cap, and is embedded inside the sealing cone sleeve end cap.

[0015] The conical sleeve gland has one end embedded in the sealing conical sleeve end cap and abutting against the conical sleeve sealing ring, and the other end connected to the sealing conical sleeve end cap by bolts. The sealing effect of the conical sleeve sealing ring can be adjusted by adjusting the tightness of the bolts.

[0016] Preferably, after the main shaft passes through the cylinder, end caps, bearing sleeves, self-aligning bearings, bearing glands, sealing cone sleeve end caps, cone sleeve sealing rings, and cone sleeve glands are sequentially fitted at both ends of the cylinder.

[0017] A skeleton oil seal is provided between the sealing cone sleeve end cap and the bearing gland.

[0018] Preferably, the sealing conical end cap includes:

[0019] The first ring is located at the opening end of the sealing cone sleeve end cap, and several holes are provided on the first ring for connection with the cone sleeve gland.

[0020] The second ring is located on the side wall of the sealing cone sleeve end cap. Several holes corresponding to the inner ring of the bearing cover are opened on the second ring, and it is connected and fixed by bolts to the sealing cone sleeve end cap.

[0021] Preferably, one end of the conical sleeve gland is provided with a third ring, and the other end is embedded in the sealing conical sleeve end cap and in close contact with the conical sleeve sealing ring. The third ring has a hole corresponding to the first ring, and the conical sleeve gland and the sealing conical sleeve end cap are connected by conical sleeve gland bolts.

[0022] Preferably, the outer ring of the bearing cap has several through holes corresponding to the inner circles of the bearing sleeve and the end cap, and the three are connected by several bearing cap bolts passing through the bearing cap, bearing sleeve and end cap in sequence.

[0023] Preferably, the outer circumference of the end cap is provided with several holes that match the cylinder body, and are connected and fixed by end cap bolts.

[0024] Preferably, a self-aligning bearing is provided between the bearing cap and the bearing sleeve, and an end cap skeleton oil seal is also provided at the connection between the bearing sleeve and the end cap.

[0025] Preferably, the conical sleeve sealing ring is made of rubber.

[0026] Preferably, a gap is provided between the first ring and the second ring, so that a drainage groove is formed between the first ring and the second ring.

[0027] Preferably, after the third ring comes into close contact with the conical sleeve sealing ring, there is a gap between it and the first ring, so that a drainage groove is formed between the third ring and the first ring.

[0028] Working principle: In the operation of the permanent magnet drum magnetic separator end cover sealing device with the above design structure, by tightening the cone sleeve cover bolt 211, the cone sleeve cover 21 pushes the cone sleeve sealing ring 22 into the sealing cone sleeve end cover 23. Because the cone sleeve sealing ring 22 has a cylindrical cone-shaped structure and is consistent with the internal structure of the sealing cone sleeve end cover 23, during the process of the cone sleeve cover 21 squeezing the cone sleeve sealing ring 22, the rubber material of the cone sleeve sealing ring 22 deforms, achieving a better sealing effect and ensuring a one-time sealing guarantee.

[0029] A first ring 231 and a second ring 232 are provided on the sealing cone sleeve end cap 23, and a skeleton oil seal 234 is provided between the sealing cone sleeve end cap 23 and the bearing cover 16 and is connected to the bearing cover 16 by embedding. During the rotation of the magnetic separator 1, the slurry brought to the high position by the rotation flows downward. Because the sealing cone sleeve end cap 23 is embedded in the bearing cover 16, the slurry is prevented from entering and is guided to the bottom along the groove formed between the first ring 231 and the second ring 232, thus achieving secondary sealing protection.

[0030] One end of the cone sleeve cap 21 has an annular structure, and the other end is embedded in the inside of the sealing cone sleeve end cap 23 and in close contact with the cone sleeve sealing ring 22. The splashed slurry is diverted to the bottom along the groove formed by the splicing of the third ring 212 and the first ring 231, achieving a three-layer sealing guarantee.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0032] 1. This utility model sets up a conical sleeve cover, a conical sleeve sealing ring, and a sealing conical sleeve end cap. The conical sleeve cover and the sealing conical sleeve end cap are connected by a conical sleeve cover bolt. During the tightening of the bolt, the conical sleeve cover is embedded in the sealing conical sleeve end cap and comes into close contact with the conical sleeve sealing ring, causing the conical sleeve sealing ring to deform and achieve a better sealing effect.

[0033] 2. This utility model sets the sealing cone sleeve end cap to have a cylindrical cone assembly inside, and provides a matching cone sleeve sealing ring. The deformation of the cone part during the extrusion process achieves a better sealing effect, while the cylindrical part provides uniform force and support during the extrusion process.

[0034] 3. This utility model achieves the function of slurry diversion by setting a first ring and a second ring, and by forming a groove between the first ring and the second ring;

[0035] 4. This utility model achieves the function of slurry diversion by setting a third ring and the groove formed between the third ring and the first ring. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the usage state of this utility model;

[0037] Figure 2 This is a schematic diagram of the overall structure of the magnetic separator 1 of this utility model;

[0038] Figure 3 This is a schematic diagram showing the connection relationship between the cylinder 11, the main shaft 12, and the end cap 13 of this utility model;

[0039] Figure 4 This is a cross-sectional view of the magnetic separator 1 of this utility model;

[0040] Figure 5 This is a schematic diagram of part of the structure of this utility model;

[0041] Figure 6 This is a schematic diagram of the overall exploded structure of this utility model;

[0042] Figure label:

[0043] 1-Magnetic separator, 11-Drum body, 12-Main shaft, 13-End cover, 14-Bearing sleeve, 15-Self-aligning bearing, 16-Bearing gland, 131-End cover skeleton oil seal, 161-Bearing gland bolt;

[0044] 2-Sealing assembly, 21-Conical sleeve gland, 22-Conical sleeve sealing ring, 23-Sealing conical sleeve end cap, 211-Conical sleeve gland bolt, 212-Third ring, 231-First ring, 232-Second ring, 233-Sealing conical sleeve end cap bolt, 234-Skeleton oil seal. Detailed Implementation

[0045] To make the technical means, inventive features, and achieved objectives and effects of this utility model readily understandable, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0046] like Figures 1 to 6 As shown, this embodiment provides a permanent magnet drum-type magnetic separator end cover sealing device, including sealing components 2 installed at both ends of the magnetic separator 1. The magnetic separator 1 includes a drum 11 sleeved on the main shaft 12, and end covers 13, bearing sleeves 14, self-aligning bearings 15, and bearing caps 16 symmetrically arranged at both ends of the drum. The sealing components 2 include:

[0047] The sealing cone sleeve end cap 23 has an inner wall that is a pen-shaped cylindrical-conical assembly. The opening end is cylindrical and the contact end is conical. The inner cylindrical-conical assembly matches the rubber sealing cone sleeve sealing ring 22, and its contact end is embedded in the groove preset in the middle of the bearing cover 16.

[0048] Conical sleeve sealing ring 22, the conical sleeve sealing ring 22 is a cylindrical-conical combination with a length less than that of the sealing conical sleeve end cap 23, and is embedded inside the sealing conical sleeve end cap 23;

[0049] The conical sleeve cap 21 has one end embedded in the sealing conical sleeve end cap 23 and abuts against the conical sleeve sealing ring 22, and the other end is connected to the sealing conical sleeve end cap 23 by bolts. The sealing effect of the conical sleeve sealing ring 22 can be adjusted by adjusting the tightness of the bolts.

[0050] Furthermore, after the main shaft 12 passes through the cylinder 11, end caps 13, bearing sleeves 14, self-aligning bearings 15, bearing covers 16, sealing cone sleeve end caps 23, cone sleeve sealing rings 22 and cone sleeve covers 21 are sequentially fitted at both ends of the cylinder 11.

[0051] Among them, a skeleton oil seal 234 is provided between the sealing cone sleeve end cover 23 and the bearing cover 16.

[0052] Furthermore, the sealing cone end cap 23 includes:

[0053] The first ring 231 is disposed at the opening end of the sealing cone sleeve end cap 23. The first ring 231 has several holes for connecting with the cone sleeve pressure cap 21.

[0054] The second ring 232 is located on the side wall of the sealing cone sleeve end cap 23. The second ring 232 has several holes corresponding to the inner ring of the bearing cover 16. It is connected and fixed by the sealing cone sleeve end cap bolts 233.

[0055] Furthermore, one end of the conical sleeve cap 21 is provided with a third ring 212, and the other end is embedded in the sealing conical sleeve end cap 23 and in close contact with the conical sleeve sealing ring 22. The third ring 212 has a hole corresponding to the first ring 231. The conical sleeve cap 21 and the sealing conical sleeve end cap 23 are connected by the conical sleeve cap bolt 211.

[0056] Before using the end cover sealing device of the permanent magnet drum magnetic separator with the above-described design structure, the device must first be assembled. The operator first inserts the main shaft 12 onto the drum body 11, and then installs the end covers 13 at both ends of the drum body 11. Figure 3As shown, the end cap 13 is connected to the cylinder 11 as a whole by bolts. At this time, the end cap 13 is provided with an end cap skeleton oil seal 131. The self-aligning bearing 15 is embedded in the bearing sleeve 14, and the bearing cover 16 is embedded in the bearing sleeve 14 to limit the self-aligning bearing 15. The bearing cover bolt 161 is used to connect the bearing cover 16, the bearing sleeve 14 and the end cap 13 through the corresponding holes. The skeleton oil seal 234 is embedded in the bearing cover 16, and the tapered sleeve sealing ring 22 is embedded in the bearing cover 16. The sealing tapered sleeve end cap 23 is inserted into the main shaft 12. The tapered sleeve cap bolt 211 passes through the third ring 212 and the first ring 231 on the tapered sleeve cap 21 to assemble the sealing assembly 2. The sealing assembly 2 is then fitted onto the main shaft 12 and moved until it is embedded inside the bearing cap 16. At this point, a skeleton oil seal 234 is provided between the bearing cap 16 and the sealing tapered sleeve end cap 23. The sealing tapered sleeve end cap bolt is then used to connect and fix the assembly by passing through the corresponding holes in the second ring 232 and the inner circle of the bearing cap 16. Figure 6 As shown, the assembly of the sealing device is now complete.

[0057] During use, the operator tightens the cone sleeve cover bolt 211, causing the cone sleeve cover 21 to push the cone sleeve sealing ring 22 into the sealing cone sleeve end cover 23. Because the cone sleeve sealing ring 22 has a cylindrical and conical structure and is consistent with the internal structure of the sealing cone sleeve end cover 23, the cone sleeve cover 21 compresses the cone sleeve sealing ring 22, and the rubber material of the cone sleeve sealing ring 22 deforms during the process, achieving a better sealing effect and ensuring a one-time sealing guarantee.

[0058] A first ring 231 and a second ring 232 are provided on the sealing cone sleeve end cap 23, such as Figure 5 As shown, a skeleton oil seal 234 is provided between the sealing cone sleeve end cap 23 and the bearing cover 16, and is connected to the bearing cover 16 by embedding. During the rotation of the magnetic separator 1, the slurry brought to the high position by the rotation flows downward. Because the sealing cone sleeve end cap 23 is embedded in the bearing cover 16, the slurry is prevented from entering, and is guided to the bottom along the groove formed between the first ring 231 and the second ring 232, thus achieving secondary sealing protection.

[0059] One end of the cone sleeve cap 21 has an annular structure, and the other end is embedded in the inside of the sealing cone sleeve end cap 23 and in close contact with the cone sleeve sealing ring 22. The splashed slurry is diverted to the bottom along the groove formed by the splicing of the third ring 212 and the first ring 231, achieving a three-layer sealing guarantee.

[0060] During use, the magnetic separator 1 is placed inside the slurry tank. During rotation, the cylinder 11 rotates while the main shaft 12 remains stationary. The slurry is carried to the upper end of the cylinder 11 and flows downward naturally under gravity. During the flow, it is guided from between the first ring 231 and the second ring 232 to the bottom and back into the slurry tank. The remaining splashed slurry splashes between the third ring 212 and the first ring 231 and is guided again. The residual slurry cannot enter the bearing cover 16 due to the sealing structure 2, ensuring a better sealing effect. After long-term use, the operator tightens the cone sleeve cover bolt 211 to press the cone sleeve sealing ring 22 into the cone sleeve cover 21, ensuring the effectiveness of the seal.

[0061] In this utility model, the design of end cap skeleton oil seal 131 and skeleton oil seal 231 achieves better waterproof effect, ensuring long-term use and low failure rate of magnetic separator 1.

[0062] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. A permanent magnet drum-type magnetic separator end cover sealing device, comprising sealing components (2) installed at both ends of a magnetic separator (1), wherein the magnetic separator (1) comprises a drum (11) sleeved on a main shaft (12), and end covers (13), bearing sleeves (14), self-aligning bearings (15), and bearing caps (16) symmetrically arranged at both ends of the drum, characterized in that, The sealing assembly (2) includes: The sealing cone sleeve end cap (23) has an inner wall that is a pen-shaped cylindrical-conical assembly. The opening end is cylindrical and the contact end is conical. The inner cylindrical-conical assembly matches the rubber sealing cone sleeve sealing ring (22), and its contact end is embedded in the groove in the middle of the bearing cover (16). The conical sleeve sealing ring (22) is a cylindrical-conical assembly with a length smaller than that of the sealing conical sleeve end cap (23), and is embedded inside the sealing conical sleeve end cap (23); The cone sleeve cap (21) is embedded at one end into the sealing cone sleeve end cap (23) and abuts against the cone sleeve sealing ring (22). The other end is connected to the sealing cone sleeve end cap (23) by bolts, and the sealing effect of the cone sleeve sealing ring (22) is adjusted by adjusting the tightness of the bolts.

2. The permanent magnet drum-type magnetic separator end cover sealing device according to claim 1, characterized in that, After the main shaft (12) passes through the cylinder (11), end caps (13), bearing sleeves (14), self-aligning bearings (15), bearing covers (16), sealing cone sleeve end caps (23), cone sleeve sealing rings (22) and cone sleeve covers (21) are sequentially fitted at both ends of the cylinder (11). Among them, a skeleton oil seal (234) is provided between the sealing cone sleeve end cap (23) and the bearing cover (16).

3. The permanent magnet drum-type magnetic separator end cover sealing device according to claim 2, characterized in that, The sealing conical sleeve end cap (23) includes: The first ring (231) is located at the opening end of the sealing cone sleeve end cap (23). The first ring (231) has several holes for connecting with the cone sleeve pressure cap (21). The second ring (232) is located on the side wall of the sealing cone sleeve end cap (23). The second ring (232) has several holes corresponding to the inner ring of the bearing cap (16), which are connected and fixed by the sealing cone sleeve end cap bolts (233).

4. The permanent magnet drum-type magnetic separator end cover sealing device according to claim 3, characterized in that, The conical sleeve cap (21) has a third ring (212) at one end and is embedded in the sealing conical sleeve end cap (23) at the other end, which is in close contact with the conical sleeve sealing ring (22). The third ring (212) has a hole corresponding to the first ring (231). The conical sleeve cap (21) and the sealing conical sleeve end cap (23) are connected by the conical sleeve cap bolt (211).

5. The permanent magnet drum-type magnetic separator end cover sealing device according to claim 3, characterized in that, The outer ring of the bearing cap (16) has several through holes corresponding to the inner circles of the bearing sleeve (14) and the end cap (13). Several bearing cap bolts (161) pass through the bearing cap (16), bearing sleeve (14) and end cap (13) in sequence to connect the three.

6. The end cover sealing device for a permanent magnet drum magnetic separator according to claim 5, characterized in that, The end cap (13) has several holes on its outer circumference that match the cylinder (11), and is connected and fixed by end cap bolts (132).

7. The permanent magnet drum-type magnetic separator end cover sealing device according to claim 5, characterized in that, A self-aligning bearing (15) is provided between the bearing cap (16) and the bearing sleeve (14), and an end cap skeleton oil seal (131) is also provided at the connection between the bearing sleeve (14) and the end cap (13).

8. The end cover sealing device for a permanent magnet drum magnetic separator according to claim 1, characterized in that, The conical sleeve sealing ring (22) is made of rubber.

9. A permanent magnet drum-type magnetic separator end cover sealing device according to claim 3, characterized in that, A gap is provided between the first ring (231) and the second ring (232) to form a drainage groove between the first ring (231) and the second ring (232).

10. A permanent magnet drum-type magnetic separator end cover sealing device according to claim 4, characterized in that, After the third ring (212) comes into close contact with the cone sleeve sealing ring (22), there is a gap between it and the first ring (231), so that a drainage groove is formed between the third ring (212) and the first ring (231).

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