Main shaft bearing provided with oil pump and used for overhang roll flour mill

Abstract

The invention discloses a main shaft bearing with an oil pump for an overhang roll flour mill, and belongs to the technical field of overhang roll flour mills, the main shaft bearing comprises a gear box, a bearing seat is embedded and fixedly connected in an inner cavity of the gear box, a through groove is formed in the top of the bearing seat, and an upper bearing for the overhang roll flour mill is connected to the inner wall of the through groove of the bearing seat; a lower bearing is arranged on the lower portion of the upper bearing, inner rings of the upper bearing and the lower bearing are in interference fit with a main shaft, an oil pumping disc used for the suspension roller grinding machine oil pump is arranged on the adjacent sides of the upper bearing and the lower bearing, the top face of the oil pumping disc is fixedly connected with the main shaft in an embedded mode, and a threaded groove used for the suspension roller grinding machine oil pump is turned in the outer curved face of the oil pumping disc. A vertical concave hole used for an overhanging roller grinding machine oil pump is formed in the rotation center of the bottom face of the main shaft, a transverse concave hole communicated with the vertical concave hole and used for the overhanging roller grinding machine oil pump is formed in the outer surface of the main shaft, oil pumping can be carried out, and the situation that equipment cannot operate normally due to oil leakage at the position of the upper bearing is prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of suspension roller mills, in particular to a main shaft bearing with an oil pump for a suspension roller mill. Background Art

[0002] Suspension roller mill is widely used in metallurgy, building materials, chemical industry, mining, highway construction, water conservancy and hydropower and other industries to crush and grind mineral materials. Suspension roller mill is mainly composed of main machine, analyzer, powder collector, fan, pipeline and other components. The qualified particle size materials in the silo are continuously fed into the grinding chamber of the main machine through the feeder for grinding. The ground powder is carried away by the air flow blown into the mill by the centrifugal fan and classified by the analyzer. The powder that meets the fineness enters the cyclone powder collector through the pipeline with the air flow for separation and collection. The finished powder is discharged through the unloading valve. The separated air flow is sucked into the centrifugal fan by the return air duct at the upper end of the cyclone powder collector. The unqualified powder is separated by the analyzer and thrown to the cylinder wall, falls along the cylinder wall and returns to the mill for grinding.

[0003] The main machine is a kind of powder making equipment, which mainly uses the scraper in the main machine to scoop up the material on the liner, and send the material between the grinding ring and the grinding roller, and complete the powder making through the extrusion and grinding of the grinding roller and the grinding ring. The current structure of the main machine is detailed in the Chinese patent document, the central lubrication system of the main machine of the suspended roller mill (authorization announcement number CN203309485U), in which the main shaft drives the grinding roller hanger, the grinding roller component is placed on the grinding roller hanger, and the grinding roller is installed on the grinding roller component. The scraper frame and the grinding roller hanger are connected by bolts, and a bearing is installed between the scraper frame and the bearing seat. The lubricating oil flows into the bearing through the center hole of the main shaft and the oil pipe. After the user uses it, the upper bearing often leaks oil and the equipment cannot operate normally. Summary of the invention

[0004] The object of the present invention is to provide a main shaft bearing with an oil pump for a suspension roller mill, so as to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a main shaft bearing for a suspension roller mill with an oil pump, comprising a gear box for the suspension roller mill, a bearing seat is embedded and fixedly connected in the inner cavity of the gear box, a through groove is provided on the top of the bearing seat, an upper bearing for the suspension roller mill is connected to the inner wall of the through groove of the bearing seat, a lower bearing is provided at the lower part of the upper bearing, the inner rings of the upper bearing and the lower bearing are interference-fitted with the main shaft, an oil pump pan for the suspension roller mill oil pump is provided on the adjacent sides of the upper bearing and the lower bearing, the top surface of the oil pump pan is embedded and fixedly connected with the main shaft, a threaded groove for the suspension roller mill oil pump is machined on the outer curved surface of the oil pump pan, a vertical concave hole for the suspension roller mill oil pump is provided at the rotation center of the bottom surface of the main shaft, and a transverse concave hole for the suspension roller mill oil pump connected to the vertical concave hole is provided on the outer surface of the main shaft.

[0006] Preferably, the inner top wall of the main shaft is higher than the upper bearing, and the transverse recessed hole of the main shaft is higher than the upper bearing.

[0007] Preferably, the outer ring of the lower bearing is connected to the inner wall of the gear box.

[0008] Preferably, a lower end cover is provided at the lower part of the main shaft, and the top surface of the lower end cover is fixedly connected to the gear box.

[0009] Preferably, there is a gap between the bottom surface of the main shaft and the lower end cover for the lubricating oil to flow.

[0010] Preferably, an oil mark is installed on the side of the gear box.

[0011] Compared with the prior art, the technical effects and advantages of the present invention are as follows: The main shaft bearing with an oil pump for a suspension roller mill has an upper bearing and a lower bearing that are arranged to fix the rotation position of the main shaft when the main shaft rotates, and the main shaft drives the oil pump pan to rotate during the rotation process. The surface of the oil pump pan has a threaded groove for the oil pump of the suspension roller mill, and the oil pump pan pushes the lubricating oil to flow downward during the rotation of the main shaft, so that the lubricating oil flows through the lower bearing, and at the same time, the lubricating oil flows to the top of the upper bearing through the vertical concave holes and the horizontal concave holes provided on the main shaft, so as to achieve lubrication of the upper bearing, thereby solving the problem that the equipment cannot operate normally due to oil leakage at the upper bearing. The main shaft bearing with an oil pump for a suspended roller mill has the advantages of simple structure, low production cost, and reliable and stable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 For the present invention Figure 1 A magnified view of the structure at center C.

[0014] Description of reference numerals: In the figure: 1. Bearing seat; 2. Upper bearing; 3. Spindle; 4. Oil mark; 5. Pump oil pan; 6. Gear box; 7. Lower bearing; 8. Lower end cover. DETAILED DESCRIPTION

[0015] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0016] Unless otherwise defined, the up, down, left, right, front, back, inside and outside directions involved in this document are based on the up, down, left, right, front, back, inside and outside directions in the figures shown in the present invention, and are explained here together.

[0017] The connection method can be bonding, welding, bolt connection, etc., depending on actual needs.

[0018] In order to solve the problem that the main shaft bearing with oil pump for suspension roller mill often leaks oil at the upper bearing during use, and the equipment cannot operate normally, please refer to Figure 1 to Figure 2 The structure of the device body is as follows: it includes a gear box 6 for a suspension roller mill, a bearing seat 1 is embedded and fixedly connected in the inner cavity of the gear box 6, a through groove is provided on the top of the bearing seat 1, an upper bearing 2 for the suspension roller mill is connected to the inner wall of the through groove of the bearing seat 1, a lower bearing 7 is provided at the lower part of the upper bearing 2, the inner rings of the upper bearing 2 and the lower bearing 7 are interference-fitted with a main shaft 3, an oil pump pan 5 for an oil pump for the suspension roller mill is provided on the adjacent sides of the upper bearing 2 and the lower bearing 7, the top surface of the oil pump pan 5 is embedded and fixedly connected with the main shaft 3, a threaded groove for the oil pump for the suspension roller mill is machined on the outer curved surface of the oil pump pan 5, a vertical concave hole for the oil pump for the suspension roller mill is provided at the rotation center of the bottom surface of the main shaft 3, and a transverse concave hole for the oil pump for the suspension roller mill connected to the vertical concave hole is provided on the outer surface of the main shaft 3.

[0019] In this embodiment, the gear box 6 provides support and fixing for the bearing seat 1 and the lower bearing 7, and the bearing seat 1 provides support and fixing for the upper bearing 2. At the same time, the upper bearing 2 and the lower bearing 7 fix the rotation position of the main shaft 3, providing conditions for the relative rotation of the main shaft 3 and the gear box 6. When the main shaft 3 rotates, the pump oil pan 5 follows the main shaft 3 to rotate synchronously in the same direction, and the outer surface of the pump oil pan 5 has a threaded groove for the oil pump of the suspended roller mill. During the rotation of the pump oil pan 5, the threaded groove of the pump oil pan 5 pushes the lubricating oil inside the gear box 6 to flow downward, so that the lubricating oil is The oil passes through the vertical and horizontal recessed holes on the main shaft 3, so that the lubricating oil falls into the ball at the top of the upper bearing 2, providing lubrication for the upper bearing 2 and preventing the upper bearing 2 from leaking oil and causing the equipment to not operate normally. The height of the through groove on the top of the bearing seat 1 is higher than the height of the upper bearing 2, and the bottom surface of the upper bearing 2 is flush with the bottom surface of the bearing seat 1, so that the top surface of the upper bearing 2 is lower than the top surface of the bearing seat 1. When the lubricating oil flows into the ball at the top of the upper bearing 2, the lubricating oil is always in the through groove of the bearing seat 1, which is convenient for the lubricating oil to flow downward through the upper bearing 2, thereby realizing the recycling of the lubricating oil.

[0020] Specifically, the inner top wall of the main shaft 3 is higher than the upper bearing 2 , and the transverse recessed hole of the main shaft 3 is higher than the upper bearing 2 , and the outer ring of the lower bearing 7 is connected to the inner wall of the gear box 6 .

[0021] In this embodiment, the inner wall of the vertical recessed hole opened on the bottom surface of the main shaft 3 is higher than the upper bearing 2, and the transverse recessed hole connected to the vertical recessed hole is higher than the upper bearing 2. When the main shaft 3 rotates, the lubricating oil is pushed downward by the oil pump pan 5, and the lubricating oil flows into the vertical recessed hole of the main shaft 3, and then the lubricating oil flows into the transverse recessed hole of the main shaft 3. The lubricating oil flows through the transverse recessed hole to the ball at the top of the upper bearing 2.

[0022] Specifically, a lower end cover 8 is provided at the lower part of the main shaft 3, the top surface of the lower end cover 8 is fixedly connected to the gear box 6, a gap for lubricating oil to flow is provided between the bottom surface of the main shaft 3 and the lower end cover 8, and an oil mark 4 is installed on the side of the gear box 6.

[0023] In this embodiment, the lubricating oil inside the gear box 6 needs to immerse the pump oil pan 5 to provide conditions for the pump oil pan 5 to push the lubricating oil to flow downward. The set oil mark 4 is used to monitor the reserve of the lubricating oil inside the gear box 6 in real time. The set lower end cover 8 provides support for the lubricating oil. When the lubricating oil flows downward, the lubricating oil flows into the vertical recessed hole of the main shaft 3 through the gap between the bottom surface of the main shaft 3 and the lower end cover 8.

[0024] How it works The main shaft bearing with oil pump for the suspended roller mill is used by the user. When the user is in use, the rotation of the main shaft 3 is driven by the motor, pulley, gear and other parts. When the main shaft 3 rotates, the main shaft 3 drives the oil pump pan 5 to rotate. Driven by the spiral groove on the oil pump pan 5, the lubricating oil flows through the lower bearing 7, enters the inner cavity of the lower end cover 8, and then passes through the vertical concave hole and the horizontal concave hole of the main shaft 3, so that the lubricating oil flows into the ball of the upper bearing 2, thereby completing the delivery of the lubricating oil.

[0025] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A main shaft bearing for a suspension roller mill with an oil pump, comprising a gear box (6) for the suspension roller mill, characterized in that: A bearing seat (1) is embedded and fixedly connected in the inner cavity of the gear box (6); a through groove is formed on the top of the bearing seat (1); an upper bearing (2) for a suspended roller mill is connected to the inner wall of the through groove of the bearing seat (1); a lower bearing (7) is provided at the lower part of the upper bearing (2); and the inner rings of the upper bearing (2) and the lower bearing (7) are interference-fitted with the main shaft (3); An oil pump pan (5) for a roller mill oil pump is arranged adjacent to the upper bearing (2) and the lower bearing (7); the top surface of the oil pump pan (5) is embedded and fixedly connected with the main shaft (3); a threaded groove for the roller mill oil pump is machined on the outer curved surface of the oil pump pan (5); a vertical concave hole for the roller mill oil pump is provided at the rotation center of the bottom surface of the main shaft (3); and a transverse concave hole for the roller mill oil pump, which is connected to the vertical concave hole, is provided on the outer surface of the main shaft (3).

2. The main shaft bearing with oil pump for a suspension roller mill according to claim 1, characterized in that: The inner top wall of the main shaft (3) is higher than the upper bearing (2), and the transverse recessed hole of the main shaft (3) is higher than the upper bearing (2).

3. A main shaft bearing with an oil pump for a suspension roller mill according to claim 2, characterized in that: The outer ring of the lower bearing (7) is connected to the inner wall of the gear box (6).

4. A main shaft bearing with an oil pump for a suspension roller mill according to claim 3, characterized in that: A lower end cover (8) is provided at the lower portion of the main shaft (3), and a top surface of the lower end cover (8) is fixedly connected to the gear box (6).

5. The main shaft bearing with oil pump for a suspension roller mill according to claim 4, characterized in that: There is a gap between the bottom surface of the main shaft (3) and the lower end cover (8) for lubricating oil to flow.

6. The main shaft bearing with oil pump for a suspension roller mill according to claim 5, characterized in that: An oil mark (4) is mounted on the side of the gear box (6).

Images