Rotary oil distribution valve mechanism

Abstract

The utility model discloses a rotary oil distribution valve mechanism, and belongs to the technical field of oil supply equipment. Comprising an outer wall sleeve, a mandrel and an inner core, a front end cover is arranged at the front end of the outer wall sleeve, an end cover oil inlet hole is formed in the outer end face of the front end cover, two end cover oil outlet holes are formed in the inner end face of the front end cover, and the included angle of the circle centers corresponding to the two end cover oil outlet holes is 45 degrees. The outer wall sleeve is provided with eight oil outlets which are arranged in an array mode and are arranged in four axial rows and two radial columns, the included angle of circle centers corresponding to the two columns of oil outlets is also 45 degrees, the mandrel is arranged in the outer wall sleeve, four oil passing holes are formed in the side wall of the mandrel and correspond to the four rows of oil outlets, and the four oil passing holes are evenly distributed in the circumferential direction of the mandrel. One oil passing hole corresponds to two oil outlets for supplying oil, a driving shaft is arranged at the rear end of the core shaft, and the inner core is arranged in the core shaft. The lubricating device has the advantages that the function of lubricating eight paths of different point positions is realized by controlling the rotation of the internal core shaft through one motor, and the oil feeding efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil supply equipment, and particularly relates to a rotary oil distribution valve mechanism. Background Art

[0002] To ensure the normal and stable operation of large-scale equipment, various lubricators are often required to quantitatively deliver lubricating oil. Lubrication systems are widely used because they can reduce wear on moving parts in various equipment and extend their service life. With the accelerated development of Industry 4.0, the demand for mechanical equipment lubrication, especially reliable intelligent lubrication equipment, is gradually increasing in traditional manufacturing. Traditional lubrication equipment requires one solenoid valve to control one pipeline and can only correspond to one lubrication point. Multiple solenoid valves are required for multiple points, which is costly and prone to lubricant leakage, causing pollution.

[0003] A multi-way oil distributor is a device designed to automatically lubricate large equipment during operation. Currently, there are transversely movable oil distributors on the market, but these only have six branches and can scrape a small amount of grease from the inner cavity wall during transverse movement, causing contamination.

[0004] In view of the above-mentioned prior art, the applicant has made a useful design, and the technical solution to be introduced below is produced in this context. Utility Model Content

[0005] The purpose of the utility model is to provide a rotary oil distribution valve mechanism which has a simple structure and can meet the lubrication needs of multiple points at the same time.

[0006] The purpose of the present utility model is achieved in this way. A rotary oil distribution valve mechanism comprises an outer wall sleeve, a core shaft and an inner core. The outer wall sleeve is provided with a front end cover at the opening at the front end. The front end cover is provided with an end cover oil inlet hole on the outer end surface, and two end cover oil outlet holes connected with the end cover oil inlet hole are provided on the inner end surface. The center angle corresponding to the two end cover oil outlet holes is 45 degrees. The outer wall sleeve is provided with a rear end cover at the opening at the rear end. The outer wall sleeve is provided with eight oil outlets arranged in an array in four axial rows and two radial rows. The center angle corresponding to the two rows of oil outlets is also 45 degrees. The core shaft is arranged in the outer wall sleeve. The core shaft is on the side wall and forms four oil holes corresponding to the four rows of oil outlets. The four oil holes are evenly distributed around the circumference of the core shaft. One oil hole corresponds to two oil outlets. The oil is supplied through the opening, the core shaft is equipped with a front end bearing at the front end, the outer wall sleeve is respectively formed with bearing cavities at the openings at the front and rear ends, the front end bearing is arranged in the bearing cavity at the front end of the outer wall sleeve, the core shaft is provided with a drive shaft at the rear end, the drive shaft is sleeved with a rear end bearing, the rear end bearing is arranged in the bearing cavity at the rear end of the outer wall sleeve, a sealing sleeve cavity is formed on the rear end cover, a U-shaped oil seal is arranged in the sealing sleeve cavity, the drive shaft passes through the U-shaped oil seal and is connected to the external motor transmission, the inner core is arranged in the core shaft, and the inner core is evenly distributed on the outer circumference with four oil guide grooves extending from the front end along the length direction, the rear ends of the four oil guide grooves respectively correspond to the four oil holes on the core shaft, and when the external motor drives the core shaft to rotate, the oil outlet holes of the two end covers are connected with the four oil guide grooves one by one.

[0007] In a specific embodiment of the present invention, the core shaft is formed with a bearing installation step at the front end for supporting the front end bearing.

[0008] In another specific embodiment of the present invention, a front O-ring is provided at the junction of the front end cover and the front end of the outer wall sleeve, and a rear O-ring is provided at the junction of the rear end cover and the rear end of the outer wall sleeve.

[0009] In another specific embodiment of the present invention, the inner core is provided with a pair of locking keys on the front end side wall, and the core shaft is provided with keyways corresponding to the locking keys at the front end opening. The locking keys and keyways cooperate to fix the inner core in the inner cavity of the core shaft.

[0010] Due to the adoption of the above-mentioned structure, the utility model can add more oil circuit branches on the basis of not changing the external dimensions of the existing oil distribution valve, adopts four main oil circuits to form eight oil outlet branches corresponding to eight different lubrication points, and controls the rotation of the internal core shaft by a motor to connect the main oil circuit to the branch oil circuits respectively to realize the lubrication function of the eight different points, with high oil supply efficiency; each branch is an independent oil channel and will not interfere with each other; the deep hole in the cavity adopts the nesting form of the inner core surface milling groove inserted into the outer wall, which reduces the difficulty of deep hole processing and the consumption of drill bits, increases reliability and saves manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 This is a schematic structural diagram of the inner side of the front end cover of the present invention.

[0013] In the figure: 1. Outer wall sleeve, 11. Oil outlet, 12. Bearing cavity; 2. Core shaft, 21. Oil hole, 22. Front bearing, 23. Drive shaft, 24. Rear bearing, 25. Bearing mounting step, 26. Keyway; 3. Inner core, 31. Oil guide groove, 32. Locking key; 4. Front cover, 41. End cover oil inlet hole, 42. End cover oil outlet hole; 5. Rear cover, 51. Sealing sleeve cavity, 52. U-type oil seal; 6. Front O-ring; 7. Rear O-ring. DETAILED DESCRIPTION

[0014] The specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings. However, the description of the embodiments does not limit the technical solution. Any changes in form rather than substance based on the concept of the present invention should be regarded as within the scope of protection of the present invention.

[0015] In the following description, all concepts related to directionality (or orientation) such as up, down, left, right, front and back are with respect to the position state of the figure being described, and are intended to facilitate public understanding. Therefore, they should not be understood as special limitations on the technical solutions provided by the present invention.

[0016] See Figure 1 and Figure 2The utility model relates to a rotary oil-dividing valve mechanism, which adopts four main oil circuits to form eight oil outlet branches, corresponding to eight different lubrication points respectively. The rotary oil-dividing valve mechanism comprises an outer wall sleeve 1, a core shaft 2 and an inner core 3. The outer wall sleeve 1 is provided with a front end cover 4 at the front end opening, and the front end cover 4 is provided with an end cover oil inlet hole 41 on the outer end surface, through which the external lubricating oil enters the mechanism, and two end cover oil outlet holes 42 are provided on the inner end surface to communicate with the end cover oil inlet hole 41, and the angle between the center of the two end cover oil outlet holes 42 is 45 degrees; the outer wall sleeve 1 is provided with a rear end cover 5 at the rear end opening. A front end O-ring 6 is provided at the junction of the front end cover 4 and the front end of the outer wall sleeve 1, and a rear end O-ring 7 is provided at the junction of the rear end cover 5 and the rear end of the outer wall sleeve 1, thereby ensuring the effective sealing of the outer wall sleeve 1. The outer wall sleeve 1 is provided with eight oil outlets 11 arranged in an array in four axial rows and two radial rows. The eight oil outlets 11 correspond to eight lubrication points. The angle between the center of the circle corresponding to the two rows of oil outlets 11 is 45 degrees. The core shaft 2 is arranged in the outer wall sleeve 1. The core shaft 2 forms four oil holes 21 on the side wall corresponding to the four rows of oil outlets 11. The four oil holes 21 are evenly distributed around the circumferential direction of the core shaft 2, that is, two adjacent oil holes 21 are 90 degrees apart in the circumferential direction of the core shaft 2. One oil hole 21 corresponds to two oil outlets 11 in the same row. The core shaft 2 is formed with a bearing mounting step 25 at the front end for supporting the front end bearing 22. The outer wall sleeve 1 is formed with bearing cavities 12 at the openings at the front and rear ends respectively. The front end bearing 22 is arranged in the bearing cavity 12 at the front end of the outer wall sleeve 1. The core shaft 2 is provided with a drive shaft 23 at the rear end. The drive shaft 23 is sleeved with a rear end bearing 24, which is located in the bearing cavity 12 at the rear end of the outer wall sleeve 1. The rear end cover 5 is formed with a sealing sleeve cavity 51, which is equipped with a U-shaped oil seal 52. The drive shaft 23 passes through the U-shaped oil seal 52 and is connected to the external motor. The inner core 3 is disposed within the core shaft 2. The inner core 3 is provided with a pair of locking keys 32 on the front side wall. The core shaft 2 is provided with keyways 26 at the front opening corresponding to the locking keys 32. The locking keys 32 and keyways 26 cooperate to secure the inner core 3 within the inner cavity of the core shaft 2. The inner core 3 has four oil guide grooves 31 evenly distributed on the outer circumference, extending from the front end along the length direction. The rear ends of the four oil guide grooves 31 correspond to the four oil holes 21 on the core shaft 2.

[0017] When the external motor drives the core shaft 2 to rotate, the inner core 3 rotates accordingly, and then one of the four oil guide grooves 31 is connected to one of the oil outlet holes 42 of the end cover. The lubricating oil enters the oil guide groove 31 and flows into the corresponding oil outlet 11 through the corresponding oil hole 21 and enters the corresponding lubrication point. The following is a detailed explanation using an example: As the spindle 2 rotates, the first end cap oil hole 42 first connects to an oil guide groove 31. This oil guide groove 31 now corresponds to the first oil outlet 11 in the first row, which supplies oil to the first lubrication point. The spindle 2 continues to rotate in the same direction by 45 degrees. At this time, the oil guide groove 31 connects to the second end cap oil hole 42 and simultaneously supplies oil to the second oil outlet 11 in the first row, supplying oil to the second lubrication point. The spindle 2 continues to rotate in the same direction by 45 degrees. At this time, the two end cap oil holes 42 supply oil to the next oil guide groove 31. This oil guide groove 31 then supplies oil to the third and fourth oil outlets 11 in the second row, supplying oil to the third and fourth lubrication points. Similarly, after one rotation of the spindle 2, the oil can be divided into eight branches to supply oil to eight lubrication points, and the branches will not interfere with each other. If the oil guide groove 31 is not connected to the oil outlet hole 42 of the end cover or the oil outlet 11 , it will be sealed to achieve the pressure maintaining function.

Claims

1. A rotary oil distribution valve mechanism, characterized in that: The invention comprises an outer wall sleeve (1), a core shaft (2) and an inner core (3), wherein the outer wall sleeve (1) is provided with a front end cover (4) at the front end opening, the front end cover (4) is provided with an end cover oil inlet hole (41) on the outer end surface, and two end cover oil outlet holes (42) connected to the end cover oil inlet hole (41) are provided on the inner end surface, and the angle between the centers of the two end cover oil outlet holes (42) is 45 degrees, the outer wall sleeve (1) is provided with a rear end cover (5) at the rear end opening, and the outer wall sleeve (1) is provided with an array of The eight oil outlets (11) are arranged in four axial rows and two radial rows, and the center angles corresponding to the two rows of oil outlets (11) are also 45 degrees. The core shaft (2) is set in the outer wall sleeve (1), and the core shaft (2) forms four oil holes (21) on the side wall corresponding to the four rows of oil outlets (11). The four oil holes (21) are evenly distributed around the circumference of the core shaft (2), and one oil hole (21) corresponds to two oil outlets (11) for oil supply. The core shaft (2) is equipped with a front bearing (22) at the front end. ), the outer wall sleeve (1) is respectively formed with bearing cavities (12) at the openings at the front and rear ends, the front end bearing (22) is arranged in the bearing cavity (12) at the front end of the outer wall sleeve (1), the core shaft (2) is provided with a driving shaft (23) at the rear end, the driving shaft (23) is sleeved with a rear end bearing (24), the rear end bearing (24) is arranged in the bearing cavity (12) at the rear end of the outer wall sleeve (1), the rear end cover (5) is formed with a sealing sleeve cavity (51), the sealing sleeve cavity (51) is provided with a sealing sleeve cavity (51). A U-shaped oil seal (52) is provided. The drive shaft (23) passes through the U-shaped oil seal (52) and is connected to the external motor in a transmission manner. The inner core (3) is provided in the core shaft (2). Four oil guide grooves (31) extending from the front end along the length direction are evenly distributed on the outer peripheral surface of the inner core (3). The rear ends of the four oil guide grooves (31) respectively correspond to the four oil holes (21) on the core shaft (2). When the external motor drives the core shaft (2) to rotate, the two end cover oil outlet holes (42) are connected to the four oil guide grooves (31) one by one.

2. A rotary oil distribution valve mechanism according to claim 1, characterized in that: The core shaft (2) is formed with a bearing installation step (25) at the front end for supporting the front end bearing (22).

3. The rotary oil distribution valve mechanism according to claim 1, characterized in that: A front O-type sealing ring (6) is provided at the junction of the front end cover (4) and the front end of the outer wall sleeve (1), and a rear end O-type sealing ring (7) is provided at the junction of the rear end cover (5) and the rear end of the outer wall sleeve (1).

4. The rotary oil distribution valve mechanism according to claim 1, characterized in that: The inner core (3) is provided with a pair of locking keys (32) on the front end side wall, and the core shaft (2) is provided with a keyway (26) corresponding to the locking keys (32) at the front end opening. The locking keys (32) and the keyway (26) cooperate to fix the inner core (3) in the inner cavity of the core shaft (2).

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