An oil filler for facilitating the filling of lubricating oil

Abstract

The utility model discloses an oil filler convenient to fill lubricating oil belongs to oil filler field. A kind of oil filler convenient to fill lubricating oil, including lower pipeline, the upper end of lower pipeline is provided with upper pipeline, the upper end in lower pipeline is provided with piston, the upper end of piston is provided with extrusion block, the upper end recess of extrusion block is provided with annular movable cavity. The utility model solves the existing hydraulic single point special oil filler, the problem that the efficiency of pressing plate oil discharge and the precision of oil discharge reduce, influence the injection effect of lubricating oil, the utility model directly extrudes extrusion block by the rotation of pusher piece, can make extrusion block longitudinal movement and extrude lubricating oil, and when filling lubricating oil to lower pipeline inside, need not reverse adjustment and pull, only need to continue to rotate pusher piece clockwise, can make filled lubricating oil initiative push extrusion block and piston reset, operation is simpler.

Description

Technical Field

[0001] This utility model relates to the field of oil injectors, specifically an oil injector that facilitates the filling of lubricating oil. Background Technology

[0002] A lubricator is a device whose main function is to inject lubricating oil into specific connection points at regular intervals and in measured quantities through an external pipeline, thereby achieving automatic replenishment of lubricating oil. The design of this device is similar to that of a syringe. By precisely controlling the delivery volume and time interval of lubricating oil, it ensures that mechanical equipment receives continuous lubrication during operation, thereby reducing wear and extending service life. Lubricating oil injectors are widely used, especially in various industrial equipment and machinery that require regular lubrication. They can effectively improve work efficiency and reduce maintenance costs, making them an indispensable tool in modern production.

[0003] Chinese patent CN216113293U discloses a hydraulic single-point dedicated oil injector, including an oil cylinder; a base detachably connected to one end of the oil cylinder, with an oil outlet nozzle on the part of the base outside the oil cylinder, and an oil outlet hole connecting the oil outlet nozzle and the oil cylinder; and a top cover detachably connected to the other end of the oil cylinder. The top cover is equipped with a gas spring that extends and retracts along the axial direction of the oil cylinder. By replacing the helical spring in the existing oil injector with a gas spring, based on the characteristic of the gas spring having a small change in elastic force, the oil chamber volume of the oil injector can be appropriately increased, extending the service life of the oil injector and reducing the frequency of oil replenishment.

[0004] During the oil injection process, the hydraulic single-point dedicated oil injector of the above-mentioned patent can inject oil by the lateral movement of the pressure plate. When oil needs to be replenished after using this solution, the compression of the gas spring position is required to drive the pressure plate to reset. Otherwise, it is difficult to push the pressure plate to reset by relying solely on the force during the replenishment of oil, because the rear end of the pressure plate is continuously pushed by the gas spring, making it difficult to replenish the oil in the subsequent oil injector. Utility Model Content

[0005] The purpose of this invention is to provide an oil injector that facilitates filling with lubricating oil. By rotating the push plate, the extrusion block is directly squeezed, which allows the extrusion block to move longitudinally and squeeze out the lubricating oil. When filling the lubricating oil into the lower pipe, there is no need for reverse adjustment or pulling. The filled lubricating oil can actively push the extrusion block and piston to reset, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an oil injector for easy filling of lubricating oil, comprising a lower pipe, an upper pipe at the upper end of the lower pipe, a piston at the upper end of the lower pipe, a squeezing block at the upper end of the piston, an annular movable cavity at the upper end of the squeezing block, a squeezing ring at the lower end of the movable cavity, a lowest point at one end of the squeezing ring, a highest point at the other end of the squeezing ring, and an inclined surface on the surface of the squeezing ring that spirals clockwise from the lowest point to the highest point. The clockwise spiraling inclined surface can push a pushing plate at the lower end, which can be pushed to discharge lubricating oil, and can be reset without restriction after all the lubricating oil is discharged.

[0007] Preferably, a pushing plate is provided at the upper end of the outer side of the active cavity. One end of the pushing plate is positioned with its highest point facing the lowest point of the extrusion ring, and the other end of the pushing plate is positioned with its lowest point facing the highest point of the extrusion ring. The surface of the pushing plate is provided with an inclined surface that spirals clockwise from the highest point to the lowest point. The pre-reserved pushing plate can push the extrusion block at the lower end, which in turn squeezes the extrusion block to compress the lubricant inside the pipe, thereby realizing the discharge and addition of the lubricant.

[0008] Preferably, the inclined surface formed from the highest point to the lowest point of the pushing plate is in close contact with the inclined surface trajectory formed from the lowest point to the highest point of the extrusion ring. The in close contact inclined trajectory can facilitate the discharge of lubricant and facilitate the longitudinal downward movement of the extrusion block after it is pushed.

[0009] Preferably, the inner wall of the upper pipe is evenly distributed with four slide rails, and the outer wall of the extrusion block is evenly distributed with four limiting blocks that are slidably connected to the inside of the slide rails. The limiting blocks by the slide rails can facilitate the longitudinal sliding of the extrusion block, facilitate the extrusion block to drive the piston to extrude the lubricant, and facilitate the extrusion of the lubricant from the lower pipe.

[0010] Preferably, a transmission ring is arranged around the upper end of the upper pipe, and the transmission ring and the upper pipe are an integral structure. A transmission block is arranged in the middle of the transmission ring, and the transmission block passes through the transmission ring and is welded and fixed to the center position of the push plate. The lower push plate can be output through the position of the transmission block, and the push plate will not be unable to rotate due to the transmission ring wrapping around the push plate.

[0011] Preferably, a servo motor is provided at the upper end of the transmission ring, and a protective cover that is threaded to the outer wall of the transmission ring is provided at the upper end of the servo motor. The detachable protective cover facilitates the disassembly and adjustment of the servo motor, and facilitates the maintenance and replacement of the servo motor.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] In this invention, when the piston moves longitudinally within the lower pipe to inject lubricating oil, the extrusion block is formed by a rotating push plate within the movable chamber. The push plate, rotating longitudinally upwards from its highest point to its lowest point, directly presses the extrusion ring, which has rotated longitudinally upwards from its lowest point to its highest point, in a clockwise direction. After the push plate reaches the highest point of the extrusion ring, there is no need to reset the push plate counter-clockwise. At this point, the highest point of the push plate is above the lowest point of the extrusion ring. This process is achieved by removing the oil injection check valve and repositioning the piston within the lower pipe. When new lubricating oil is injected, the injected lubricating oil can push the piston and the extrusion block and reset them. When the servo motor is restarted, the push plate can rotate clockwise to repeatedly push the extrusion block. The servo motor does not need to adjust the rotation direction to deal with the replenishment of lubricating oil in the lower pipe, reducing the operation of replenishing lubricating oil in the lower pipe and reducing the extra operations when replenishing lubricating oil. After the lubricating oil is completely discharged, lubricating oil can be replenished directly. Correspondingly, after the lubricating oil is injected, it can also be discharged directly by rotation. During the lubricating oil replenishment process, the step of adjusting the piston is skipped, making the oil replenishment operation simpler and more convenient. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0015] Figure 2 This is a cross-sectional view showing the piston position relationship of this utility model;

[0016] Figure 3 This is an exploded view of the servo motor position relationship of this utility model;

[0017] Figure 4 For the present utility model Figure 3 Enlarged view of a portion of region A in the middle;

[0018] Figure 5 For the present utility model Figure 3 Enlarged view of a portion of region B in the middle;

[0019] Figure 6 This is a schematic diagram of the spiral trajectory of the extrusion ring of this utility model;

[0020] Figure 7 This is a cross-sectional view of the internal structure of the protective cover of this utility model;

[0021] Figure 8 This is a schematic diagram showing the positional relationship of the limiting lever of this utility model.

[0022] In the diagram: 1. Protective cover; 2. Servo motor; 3. Upper pipe; 4. Oil injection check valve; 6. Piston; 7. Extrusion block; 8. Transmission ring; 9. Restriction lever; 10. Transmission block; 11. Pusher plate; 12. Highest point of pusher plate; 13. Lowest point of pusher plate; 14. Movable cavity; 15. Restriction block; 16. Slide rail; 17. Extrusion ring; 18. Highest point of extrusion ring; 19. Lowest point of extrusion ring; 20. Lower pipe. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments.

[0024] like Figure 1 and Figure 3 As shown, an oil injector for easy filling of lubricating oil in this embodiment includes a lower pipe 20. An oil injection check valve 4 is provided at the lower end of the lower pipe 20, and the oil injection check valve 4 is fixedly connected to the lower pipe 20 by bolts. The lubricating oil discharged from the lower pipe 20 will be discharged to the required position through the oil injection check valve 4. The oil injection check valve 4 will also restrict the entry of external foreign objects to prevent them from entering the lower pipe 20.

[0025] like Figure 2 As shown, an upper pipe 3 is provided at the upper end of the lower pipe 20, and the upper pipe 3 and the lower pipe 20 are an integral structure. A piston 6 is provided at the upper end of the lower pipe 20. After the structure inside the upper pipe 3 pushes the piston 6, the piston 6 slides longitudinally along the lower pipe 20. The piston 6 can squeeze the lubricating oil inside the lower pipe 20, and the lubricating oil injection is completed by the squeezing of the piston 6.

[0026] To facilitate lubrication and subsequent replenishment of lubricating oil to the lower pipe 20, a compression block 7 is provided at the upper end of the piston 6. An annular movable cavity 14 is recessed at the upper end of the compression block 7. A compression ring 17 is provided at the lower end of the movable cavity 14. One end of the compression ring 17 is provided with the lowest point 19 and the other end is provided with the highest point 18. The surface of the compression ring 17 is provided with an inclined surface that spirals clockwise from the lowest point 19 to the highest point 18. The compression ring 17 with a spiraling upward trajectory is easily pushed, allowing the compression block 7 to drive the piston 6 to move longitudinally downward within the lower pipe 20.

[0027] Furthermore, a pushing plate 11 is provided at the upper end of the exterior of the movable cavity 14, such as... Figure 4 As shown, one end of the pusher plate 11 is provided with the highest point 12 of the pusher plate facing the lowest point 19 of the extrusion ring, and the other end of the pusher plate 11 is provided with the lowest point 13 of the pusher plate facing the highest point 18 of the extrusion ring. The surface of the pusher plate 11 is provided with an inclined surface that spirals clockwise from the highest point 12 to the lowest point 13 of the pusher plate.

[0028] It is worth mentioning that the inclined plane formed by the highest point 12 of the push plate and the lowest point 13 of the push plate coincides with the inclined plane formed by the lowest point 19 of the extrusion ring and the highest point 18 of the extrusion ring, and the slopes formed by the two are the same. In this case, the clockwise rotation of the push plate 11 will directly squeeze the surface of the extrusion ring 17 inside the extrusion block 7. Moreover, after the piston 6 slides longitudinally until all the lubricating oil inside the lower pipe 20 is discharged, the position of the highest point 12 of the push plate 11 slides along the surface of the extrusion ring 17 to the position of the highest point 18 of the extrusion ring. When it is necessary to replenish the lubricating oil inside the lower pipe 20, there is no need to manually adjust the push plate 11 in reverse. Rotation is performed without adjusting the output direction of servo motor 2, without pulling piston 6 to reset, and without additional adjustment of the highest point 12 of push plate. After the highest point 12 of push plate rotates 360 degrees, it is now above the lowest point 19 of extrusion ring. Lubricating oil is directly filled into the lower pipe 20, which can directly reset piston 6. After piston 6 and extrusion block 7 are reset, the position of the highest point 12 of push plate will also re-enter the position of the lowest point 19 of extrusion ring. Servo motor 2 corresponding to the upper end of push plate 11 is then started, and push plate 11 continues to rotate clockwise driven by servo motor 2.

[0029] In order to ensure that the extrusion block 7 can respond to the pushing of the pusher plate 11, and to facilitate the longitudinal sliding of the extrusion block 7 along the upper pipe 3, as follows: Figure 5 and Figure 6 As shown, four slide rails 16 are evenly distributed around the inner wall of the upper pipe 3, and four limiting blocks 15 are evenly distributed around the outer wall of the extrusion block 7. The limiting blocks 15 are embedded in the slide rails 16 and are slidably connected to the inside of the slide rails 16. When the pushing plate 11 slides longitudinally, the limiting blocks 15 will slide in the trajectory provided by the slide rails 16, which makes it easier for the extrusion block 7 to squeeze the lubricating oil inside the lower pipe 20, and also makes it easier for the extrusion block 7 to actively reset when filling the lower pipe 20 with lubricating oil.

[0030] To facilitate the transmission of the push plate 11 and to enable the push plate 11 to rotate clockwise, a transmission ring 8 is arranged around the upper end of the upper pipe 3. The transmission ring 8 and the upper pipe 3 are an integral structure. A transmission block 10 is arranged in the middle of the transmission ring 8. The transmission block 10 passes through the transmission ring 8 and is welded and fixed to the center of the push plate 11. The upper end of the transmission ring 8 can output to the lower end of the transmission block 10. The transmission ring 8 can also wrap and protect the lower end of the upper pipe 3 and the internal structure and lubricating oil of the upper pipe 3.

[0031] Furthermore, a servo motor 2 is mounted on the upper end of the transmission ring 8, and the output shaft of the servo motor 2 is connected to the transmission block 10 via a slot. The output shaft of the servo motor 2 can be embedded inside the transmission block 10, facilitating connection between the transmission block 10 and the servo motor 2. Figure 7As shown, a protective cover 1 is provided on the upper part of the servo motor 2, and the inner wall of the protective cover 1 is threadedly engaged with the outer wall of the transmission ring 8. The protective cover 1 can be installed on the outside of the transmission ring 8 by rotating it, and the servo motor 2 can be protected by the protective cover 1.

[0032] Regarding how to control the start and stop of the rotation of the servo motor 2, please refer to the Chinese patent "Control Method and Device for Servo Motor and Control System for Servo Motor" with announcement number CN109560724B. In that application, the rotation of the servo motor is preset and controlled in detail, and the servo motor can be kept in the current state. Therefore, in this application, the control of the servo motor 2 will not be described in detail.

[0033] To prevent the transmission block 10 from rotating counterclockwise and to prevent the transmission block 10 from sliding actively, such as Figure 8 As shown, a limiting plate 9 is provided on one side of the transmission block 10, and the limiting plate 9 is fixedly connected to the upper end of the transmission ring 8 by bolts. The limiting plate 9 fits against the transmission block 10 to limit the rotation direction of the transmission block 10, so that the transmission block 10 can only rotate clockwise.

[0034] Working principle: When lubricating oil is injected, the lower end of the oil injection check valve 4 is connected to the injection position. During lubrication, the servo motor 2 starts, and the output shaft of the servo motor 2 drives the transmission block 10 to rotate. The transmission block 10 drives the lower push plate 11 to rotate. The rotation of the push plate 11 squeezes the squeeze ring 17. During the process of the push plate moving clockwise from the highest point 12 of the push plate along the squeeze ring 17 to the highest point 18 of the squeeze ring, with the slide rail 16 restricting the limiting block 15, the push plate 11 will push the squeeze block 7 outside the movable cavity 14, so that the squeeze block 7 can drive the piston 6 to slide longitudinally in the lower pipe 20. The piston 6 will squeeze the lubricating oil inside the lower pipe 20, and discharge the lubricating oil from the oil injection check valve 4 position to the connection position. After the highest point 12 of the push plate 11 rotates to the highest point 18 of the extrusion ring 17 to complete the complete extrusion of lubricating oil, the lower pipe 20 needs to be replenished with lubricating oil to be injected. There is no need to adjust the output direction of the servo motor 2, pull the piston 6 to reset, or make additional adjustments to the highest point 12 of the push plate. After the highest point 12 of the push plate rotates 360 degrees, it is now above the lowest point 19 of the extrusion ring. The lubricating oil is directly filled into the lower pipe 20. The filled lubricating oil can directly reset the piston 6, allowing the highest point 12 of the push plate to re-enter the lowest point 19 of the extrusion ring. After the lower pipe 20 is rotated and connected to the oil injection check valve 4, the servo motor 2 can rotate clockwise again to inject lubricating oil.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An oil filler for facilitating the filling of lubricating oil, comprising a lower duct (20), characterized in that, The upper end of the lower pipeline (20) is provided with an upper pipeline (3), the upper end inside the lower pipeline (20) is provided with a piston (6), the upper end of the piston (6) is provided with an extrusion block (7), the upper end of the extrusion block (7) is recessed and provided with an annular movable cavity (14), the lower end inside the movable cavity (14) is provided with an extrusion ring (17), one end of the extrusion ring (17) is provided with an extrusion ring lowest point (19), the other end of the extrusion ring (17) is provided with an extrusion ring highest point (18), and the surface of the extrusion ring (17) is provided with a slope spiraling clockwise upward from the extrusion ring lowest point (19) to the extrusion ring highest point (18).

2. The oil filler according to claim 1, wherein The upper end outside the movable cavity (14) is provided with a push piece (11), one end of the push piece (11) is provided with a push piece highest point (12) towards the position of the extrusion ring lowest point (19), the other end of the push piece (11) is provided with a push piece lowest point (13) towards the position of the extrusion ring highest point (18), and the surface of the push piece (11) is provided with a slope spiraling clockwise upward from the push piece highest point (12) to the push piece lowest point (13).

3. The oil filler according to claim 2, wherein The slope formed by the push piece highest point (12) to the push piece lowest point (13) is fitted with the slope trajectory formed by the extrusion ring lowest point (19) to the extrusion ring highest point (18).

4. The oil filler according to claim 1, wherein The inner wall of the upper pipeline (3) is uniformly distributed with four slide rails (16), and the outer wall of the extrusion block (7) is uniformly distributed with four limiting blocks (15) which are slidably connected inside the slide rails (16).

5. The oil filler according to claim 4, wherein The upper end of the upper pipeline (3) is provided with a transmission ring (8), and the transmission ring (8) and the upper pipeline (3) are an integral structure, the middle inside the transmission ring (8) is provided with a transmission block (10), and the transmission block (10) is welded and fixed with the center position of the push piece (11) through the transmission ring (8).

6. The oil filler according to claim 5, wherein The upper end of the transmission ring (8) is provided with a servo motor (2), and the upper end outside the servo motor (2) is provided with a protective cover (1) which is threadedly matched with the outer wall of the transmission ring (8).

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