Lubricating pump with liquid level detection device

Abstract

The lubricating pump comprises an oil storage barrel and a base, an oil pressing disc is slidably connected into the oil storage barrel, a supporting frame is connected to the end, away from the base, of the oil storage barrel, the supporting frame is slidably connected with a first magnetic block, the first magnetic block is slidably connected to the supporting frame in the length direction of the oil storage barrel, and the supporting frame is connected with a moving assembly; the moving assembly is used for driving the first magnetic block to move along with the oil pressing disc, the supporting frame is provided with a position detector, the position detector is electrically connected with a controller, and the controller is electrically connected with a first indicator lamp. When the liquid level of lubricating oil in the oil storage barrel is low, the oil pressing disc is arranged at the bottom end of the oil storage barrel, the first magnetic block is close to the position detector, the position detector detects the first magnetic block and outputs a signal, and after the controller receives the signal, the controller controls the first indicator lamp to be turned on so as to remind an operator to add the lubricating oil. Therefore, an operator can supplement the lubricating oil in the oil storage barrel in time.

Description

Technical Field

[0001] This application relates to the field of lubrication pumps, and more particularly to a lubrication pump with a liquid level detection device. Background Technology

[0002] A lubrication pump is a lubrication device that supplies lubricant to lubrication points. Mechanical equipment requires regular lubrication. Previously, lubrication was mainly done manually after a certain maintenance cycle, based on the equipment's operating condition. Lubrication pumps simplify this maintenance process. Lubrication pumps are divided into manual lubrication pumps and electric lubrication pumps.

[0003] Chinese Patent CN114923105A discloses a centralized lubrication pump, comprising an oil storage tank with a base on the bottom and a top cover on the top surface, an oil pressure plate sealed to the inner wall of the oil storage tank, a spring mechanism with its upper end connected to the top cover and its lower end connected to the oil pressure plate, a rotating device mounted on the base and located inside the oil storage tank, a rotating arm fixedly connected to the rotating device, a stirring rod with its lower end fixedly connected to the rotating arm and its upper end rotatably connected to the oil pressure plate, and a motor connected to the rotating device via an output shaft for driving the rotating device to rotate. The stirring rod is a telescopic rod, and the top cover has a vent hole. This centralized lubrication pump effectively solves the problems of insufficient grease mixing and easy grease contamination caused by using a fixed-length stirring rod inside the grease tank.

[0004] Regarding the aforementioned technologies, oil storage tanks are typically made of opaque materials, making it difficult for operators to determine the level of lubricating oil inside the tank, thus hindering timely replenishment of the lubricating oil. Utility Model Content

[0005] To facilitate the detection of the lubricant level in the oil storage tank and to replenish the lubricant in a timely manner, this application provides a lubrication pump equipped with a level detection device.

[0006] The lubrication pump with a liquid level detection device provided in this application adopts the following technical solution:

[0007] A lubrication pump with a liquid level detection device includes an oil storage tank and a base. The oil storage tank is connected to the base, and a pressure plate is slidably connected inside the oil storage tank. The periphery of the pressure plate is in contact with the inner wall of the oil storage tank. The pressure plate is slidably connected to the oil storage tank along its length. A support frame is connected to one end of the oil storage tank away from the base. A first magnetic block is slidably connected to the support frame along its length. A moving component is connected to the support frame to drive the first magnetic block to move with the pressure plate. A position detector is provided on the support frame. The position detector is electrically connected to a controller, and the controller is electrically connected to a first indicator light. The position detector senses the first magnetic block and outputs a signal. The controller receives the signal and controls the first indicator light to illuminate. When the position detector senses the first magnetic block, the pressure plate is located at the bottom of the oil storage tank, and the controller receives the signal and controls the first indicator light to illuminate.

[0008] By adopting the above technical solution, during use, as the lubricating oil in the oil storage tank decreases, the lubricating oil level drops, and the pressure plate follows the lubricating oil level down. When the pressure plate descends, the moving component drives the first magnetic block to move along the length of the oil storage tank. When the lubricating oil level in the oil storage tank is low, the pressure plate is located at the bottom of the oil storage tank, and the first magnetic block is close to the position detector. The position detector detects the first magnetic block and outputs a signal. After receiving the signal, the controller controls the first indicator light to light up, thereby reminding the operator to add lubricating oil, so that the operator can replenish the lubricating oil in the oil storage tank in a timely manner.

[0009] Optionally, the moving component includes a moving rod, a chain, and a resetting component. The length direction of the moving rod is consistent with the length direction of the oil storage tank. The moving rod is slidably connected to the support frame along its length direction. The first magnetic block is connected to the periphery of the moving rod. One end of the chain is connected to the moving rod, and the other end of the chain is connected to the pressure plate. The resetting component is used to drive the moving rod to move along the length direction of the oil storage tank and reset it.

[0010] By adopting the above technical solution, during use, the pressure plate descends with the lubricating oil level, and one end of the chain moves with the pressure plate. When the chain is straightened, the lubricating oil level continues to descend, and the pressure plate descends with the lubricating oil level. The pressure plate drives the chain to move, and the chain pulls the moving rod to move along the length of the oil storage tank, causing the first magnetic block to move with the moving rod and drive the first magnetic block to approach the position detector. This allows the position detector to detect the first magnetic block and output a signal. After receiving the signal, the controller controls the first indicator light to light up, thereby prompting the operator to replenish the lubricating oil in time. The addition of a chain allows part of the distance the pressure plate moves to be offset by the chain between the moving rod and the pressure plate, thereby reducing the moving distance of the moving rod.

[0011] Optionally, a support frame is rotatably connected to a disc, and the disc is connected to a cylinder. The central axis of the cylinder is collinear with the central axis of the disc. One end of the chain passes through the circumference of the cylinder and is wound around the cylinder. An elastic element is provided on the side of the disc away from the cylinder. The elastic element drives the disc to rotate and drives the chain to be wound around the cylinder. The disc is slidably connected to the support frame along the length of the oil storage tank. The support frame is connected to a driving element, which is used to drive the disc to move along the length of the oil storage tank and reset.

[0012] By adopting the above technical solution, the chain is wound up in the cylinder during use, thereby reducing the space occupied by the chain and reducing the possibility of chain tangling and knotting. When the pressure plate drops with the lubricating oil level, one end of the chain moves with the pressure plate, the chain drives the cylinder to rotate, and the chain is unwound. When lubricating oil is replenished, the lubricating oil level rises, the pressure plate rises with the lubricating oil level, one end of the chain moves with the pressure plate, and the elastic element drives the chain to be wound up in the cylinder.

[0013] Optionally, the support frame is connected to a connecting cylinder, the length direction of which is consistent with the length direction of the moving rod, and the moving rod is slidably connected to the connecting cylinder along its length direction.

[0014] By adopting the above technical solution, the moving rod is slidably connected to the connecting cylinder along its length direction during use. The addition of the connecting cylinder limits the movement direction of the moving rod, allowing it to move stably in a predetermined direction.

[0015] Optionally, the support frame has a movable groove, the length of which is consistent with the length of the oil storage tank. The driving component includes a first spring and a movable block. The length of the first spring is consistent with the length of the oil storage tank. One end of the first spring is connected to the movable groove, and the other end of the first spring is connected to the movable block. The movable block is slidably connected to the movable groove along its length. The disc is rotatably connected to the movable block.

[0016] By adopting the above technical solution, after the chain is unwound, the pressure plate continues to descend with the lubricating oil level. The pressure plate drives the chain to move, the chain drives the cylinder to move downward along the length of the oil storage tank, the cylinder drives the disc and the moving block to move downward along the length of the moving groove, and the chain drives the moving rod to move along its length, thereby driving the first magnetic block to approach the position detector. The moving block moves and squeezes the first spring. When lubricating oil is added to the oil storage tank, the lubricating oil level in the oil storage tank rises, thereby driving the pressure plate to move. The chain follows the pressure plate and drives the chain to rewind on the cylinder, causing the first spring to return to its shape and push the moving block to move upward along the length of the moving groove, thereby driving the disc and the cylinder to reset, thus facilitating the chain to drive the moving rod to move downward along the length of the oil storage tank.

[0017] Optionally, the reset component includes a second spring and a third spring. The length direction of the second spring is consistent with the length direction of the moving rod, and the length direction of the third spring is consistent with the length direction of the second spring. The second spring is disposed inside the connecting cylinder and sleeved on the moving rod. The length direction of the second spring is consistent with the length direction of the moving rod. The end of the second spring near the oil storage tank is connected to the inner wall of the connecting cylinder, and the other end of the second spring is connected to the moving rod. One end of the third spring is connected to the end of the moving rod away from the oil storage tank, and the other end of the third spring is connected to the inner wall of the connecting cylinder.

[0018] By adopting the above technical solution, when the pressure plate descends with the liquid level, the chain moves with the pressure plate. The chain drives the moving rod to move along its length. When the moving rod moves downward along its length, the first spring is compressed and deformed, and the second spring is stretched and deformed. When the pressure plate rises with the liquid level, the first and second springs return to their original shapes and drive the moving rod to move upward along its length, thereby facilitating the reset of the moving rod.

[0019] Optionally, the connecting cylinder has an opening at the end away from the oil storage tank, and the end of the connecting cylinder away from the oil storage tank is covered with an installation cover. The installation cover is used to open or close the opening at one end of the connecting cylinder, and the installation cover is detachably connected to the connecting cylinder.

[0020] By adopting the above technical solution, the second spring will wear out after long-term use, which will affect the reset of the moving rod. When replacing the second spring, the mounting cover is removed from the connecting cylinder, so that the opening at one end of the connecting cylinder is opened, which makes it easier to replace the second spring and reduces the situation where the moving rod cannot reset due to the wear of the second spring.

[0021] Optionally, the connecting cylinder includes a first cylinder and a second cylinder, the central axis of the first cylinder and the central axis of the second cylinder are collinear, one end of the first cylinder is connected to the support frame, the other end of the first cylinder is detachably connected to the second cylinder, and the end of the second cylinder away from the first cylinder is connected to the mounting cover.

[0022] By adopting the above technical solution, the first spring will wear out after long-term use. When replacing the first spring, the second cylinder is removed from the first cylinder to facilitate the replacement of the first spring and reduce the possibility of the moving rod failing to return to its original position due to wear of the first spring.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. When the lubricating oil level in the oil storage tank is low, the pressure plate is located at the bottom of the oil storage tank, and the first magnetic block is close to the position detector. The position detector detects the first magnetic block and outputs a signal. After receiving the signal, the controller controls the first indicator light to light up, thereby reminding the operator to add lubricating oil, so that the operator can replenish the lubricating oil in the oil storage tank in a timely manner.

[0025] 2. During use, the pressure plate descends with the lubricating oil level, and one end of the chain moves with the pressure plate. When the chain is straightened, the lubricating oil level continues to descend, and the pressure plate descends with the lubricating oil level. The pressure plate drives the chain to move, and the chain pulls the moving rod to move along the length of the oil tank, causing the first magnetic block to move with the moving rod and drive the first magnetic block to approach the position detector. This allows the position detector to detect the first magnetic block and output a signal. After receiving the signal, the controller controls the first indicator light to light up, thereby prompting the operator to replenish the lubricating oil in time. The addition of a chain allows part of the distance the pressure plate moves to be offset by the chain between the moving rod and the pressure plate, thereby reducing the moving distance of the moving rod.

[0026] 3. When the pressure plate descends with the liquid level, the chain moves with the pressure plate. The chain drives the moving rod to move along its length. When the moving rod moves downward along its length, the first spring is compressed and deformed, and the second spring is stretched and deformed. When the pressure plate rises with the liquid level, the first and second springs return to their original shapes and drive the moving rod to move upward along its length, thus facilitating the reset of the moving rod. Attached Figure Description

[0027] Figure 1 This is the front view of this embodiment.

[0028] Figure 2 This is a partial cross-sectional view of this embodiment.

[0029] Explanation of reference numerals in the attached drawings: 100, oil storage tank; 110, oil outlet pipe; 120, oil inlet pipe; 130, guide rod; 140, support frame; 150, moving groove; 200, base; 210, first indicator light; 220, second indicator light; 300, pressure plate; 400, first magnetic block; 500, connecting cylinder; 510, first magnet proximity sensor; 520, first cylinder; 530, second cylinder; 540, mounting cover; 550, first annular groove; 560, connecting rod; 570 571. Installation cavity; 600. Second magnet proximity sensor; 610. Moving component; 611. Moving rod; 612. First rod; 613. Second rod; 614. Connecting groove; 620. Second annular groove; 630. Reset component; 631. Second spring; 632. Third spring; 700. Driving component; 710. First spring; 720. Moving block; 800. Disk; 810. Rotating rod; 811. Coil spring; 820. Cylinder; 830. Support plate. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0031] This application discloses a lubrication pump with a liquid level detection device. (Refer to...) Figure 1 and Figure 2 A lubrication pump with a liquid level detection device includes an oil storage tank 100 and a base 200. The oil storage tank 100 is connected to the top of the base 200 and is vertically arranged. The top of the oil storage tank 100 is open, and the oil storage tank 100 is connected to an oil outlet pipe 110 and an oil inlet pipe 120. A guide rod 130 is connected inside the oil storage tank 100. The length direction of the guide rod 130 is consistent with the vertical direction, and the central axis of the guide rod 130 is collinear with the central axis of the oil storage tank 100. A pressure plate 300 is connected inside the oil storage tank 100. The pressure plate 300 is horizontally arranged, and all sides of the pressure plate 300 are in contact with the inner wall of the oil storage tank 100. The pressure plate 300 is slidably sleeved on the guide rod 130, and the central axis of the pressure plate 300 is collinear with the central axis of the guide rod 130. The pressure plate 300 is slidably connected to the oil storage tank 100 along its length.

[0032] Reference Figure 1 and Figure 2 A support frame 140 is connected to the top of the oil storage tank 100, and the length of the support frame 140 is aligned with the vertical direction. A connecting cylinder 500 is connected to the support frame 140, and the length of the connecting cylinder 500 is also aligned with the vertical direction. A first magnetic block 400 is slidably connected inside the connecting cylinder 500, and the first magnetic block 400 is slidably connected within the connecting cylinder 500 along the vertical direction. A moving component 600 is connected to the support frame 140, and the moving component 600 is used to drive the first magnetic block 400 to move with the pressure plate 300.

[0033] Reference Figure 1 and Figure 2 The connecting cylinder 500 has an oil storage tank 100 connected to its side wall, and a position detector, namely a first magnet proximity sensor 510, is connected to a controller. The controller is electrically connected to a first indicator light 210, which is connected to the base 200. The first magnet proximity sensor 510 senses the first magnetic block 400 and outputs a signal. The controller receives the signal and controls the first indicator light 210 to illuminate. When the first magnet proximity sensor 510 senses the first magnetic block 400, the pressure plate 300 is located at the bottom of the oil storage tank 100, the controller receives the signal, and controls the first indicator light 210 to illuminate.

[0034] When the level of lubricating oil in the oil storage tank 100 drops to the low level, the pressure plate 300 drives the first magnetic block 400 to move vertically, so that the first magnetic block 400 approaches the first magnet proximity sensor 510, causing the first magnet proximity sensor 510 to sense the first magnetic block 400 and output a signal. After receiving the signal, the controller controls the first indicator light 210 to light up, thereby prompting the operator to replenish the lubricating oil in time.

[0035] Reference Figure 1 and Figure 2 The connecting cylinder 500 includes a first cylinder 520 and a second cylinder 530. The length direction of the first cylinder 520 is aligned with the vertical direction, and the length direction of the second cylinder 530 is aligned with the length direction of the first cylinder 520. The top end of the first cylinder 520 is connected to the bottom end of the second cylinder 530, and the central axis of the first cylinder 520 is collinear with the central axis of the second cylinder 530. The bottom end of the first cylinder 520 is connected to the support frame 140, and the bottom end of the second cylinder 530 is fitted onto the top end of the first cylinder 520, with an interference fit between the second cylinder 530 and the first cylinder 520. The top end of the second cylinder 530 is open, and a mounting cover 540 is fitted onto the top end of the second cylinder 530. The mounting cover 540 is used to open or close the top opening of the second cylinder 530, and the central axis of the mounting cover 540 is collinear with the central axis of the second cylinder 530. The inner wall and outer wall of the mounting cover 540 are interference fit.

[0036] Reference Figure 1 and Figure 2 The moving assembly 600 includes a moving rod 610, a chain 620, and a resetting component 630. The moving rod 610 is aligned with the vertical direction and is slidably connected to the connecting cylinder 500 along its length. A first magnetic block 400 is embedded around the moving rod 610. One end of the chain 620 is connected to the moving rod 610, and the other end is connected to the oil pressure plate 300. The resetting component 630 is connected to the connecting cylinder 500 and is used to drive the moving rod 610 to move along the length of the oil storage tank 100 and reset it.

[0037] Reference Figure 1 and Figure 2 The inner wall of the connecting cylinder 500 is provided with a first annular groove 550, the length direction of which is consistent with the vertical direction. The moving rod 610 includes a first rod 611 and a second rod 612. The length direction of the first rod 611 is consistent with the vertical direction, and the length direction of the second rod 612 is consistent with the length direction of the first rod 611. The second rod 612 is connected to the top of the first rod 611, and the diameter of the second rod 612 is larger than that of the first rod 611. The central axis of the first rod 611 and the central axis of the second rod 612 are collinear.

[0038] Reference Figure 1 and Figure 2 The reset component 630 includes a second spring 631 and a third spring 632. The length direction of the second spring 631 is consistent with the vertical direction. The second spring 631 is disposed inside the connecting cylinder 500 and sleeved on the first rod 611. The bottom end of the second spring 631 contacts the inner wall of the bottom of the first annular groove 550, and the top end of the second spring 631 contacts the bottom of the second rod 612.

[0039] Reference Figure 1 and Figure 2 The second rod 612 has a connecting groove 613 at its top, with its length aligned with the vertical direction. A second annular groove 614 is formed on the inner wall of the top of the connecting groove 613. A connecting rod 560 is connected inside the connecting cylinder 500, with its length aligned with the vertical direction. The top of the connecting rod 560 is connected to the mounting cover 540. The second rod 612 is slidably fitted onto the connecting rod 560, and the connecting rod 560 is slidably connected to the connecting groove 613 along its length. A third spring 632 is fitted onto the connecting rod 560, with its length aligned with the vertical direction. The top of the third spring 632 is connected to the inner wall of the mounting cover 540, and the bottom of the third spring 632 is connected to the inner wall of the bottom of the second annular groove 614.

[0040] When the moving rod 610 moves downward in the vertical direction along with the pressure plate 300, the second spring 631 and the third spring 632 deform. As the lubricating oil level gradually rises, the second spring 631 and the third spring 632 return to their original shape and drive the moving rod 610 to move upward in the vertical direction, thereby facilitating the reset of the moving rod 610.

[0041] Reference Figure 1 and Figure 2The support frame 140 has a movable groove 150, the length of which is aligned with the vertical direction. A driving component 700 is connected within the movable groove 150. The driving component 700 includes a first spring 710 and a movable block 720. The length of the first spring 710 is aligned with the vertical direction. The bottom end of the first spring 710 is connected to the movable groove 150, and the top end of the first spring 710 is connected to the movable block 720. The movable block 720 is slidably connected within the movable groove 150 along the vertical direction.

[0042] Reference Figure 1 and Figure 2 A movable block 720 is rotatably connected to a disc 800, which is vertically positioned. A rotating rod 810 is connected to one side of the disc 800, and the rotating rod 810 is rotatably connected to the movable block 720. A cylinder 820 is connected to the side of the disc 800 away from the rotating rod 810. The central axis of the cylinder 820 is collinear with the central axis of the disc 800. A support disc 830 is connected to the other end of the cylinder 820 away from the disc 800, and the central axis of the support disc 830 is collinear with the central axis of the disc 800. One end of a chain 620 passes through the center of the support disc 830 and wraps around the cylinder 820, and the chain 620 is rotatably connected to the center of the support disc 830. The rotating rod 810 is connected to an elastic element, which is a coil spring 811. One end of the coil spring 811 is connected to the rotating rod 810, and the other end of the coil spring 811 is connected to the moving block 720. When the chain 620 is unwound, the coil spring 811 deforms.

[0043] Reference Figure 1 and Figure 2 An installation cavity 570 is formed in the side wall of the first cylinder 520. A first magnet proximity sensor 510 is installed in the installation cavity 570, and the first magnet proximity sensor 510 is located at the bottom of the installation cavity 570. A second magnet proximity sensor 571 is connected to the top inner wall of the installation cavity 570. The second magnet proximity sensor 571 is electrically connected to the controller, and the controller is electrically connected to a second indicator light 220, which is connected to the base 200. The second magnet proximity sensor 571 is used to sense the first magnetic block 400 and output a signal. The controller is used to receive the signal and control the second indicator light 220 to light up. When the second magnet proximity sensor 571 senses the first magnetic block 400, the oil pressure plate 300 is located at the bottom of the oil storage tank 100. After the second magnet proximity sensor 571 outputs a signal, the controller receives the signal and controls the second indicator light 220 to light up.

[0044] When adding lubricating oil to the oil storage tank 100, as the lubricating oil level rises, the pressure plate 300 moves vertically upward, thereby driving the moving rod 610 to slide vertically into the connecting cylinder 500. This causes the first magnetic block 400 to move vertically upward, bringing it closer to the second magnet proximity sensor 571. After the second magnet proximity sensor 571 senses the first magnetic block 400, it outputs a signal. The controller receives the signal and controls the second indicator light 220 to illuminate, thus indicating to the operator that the lubricating oil in the oil storage tank 100 is at a high level and does not need to be added.

[0045] The implementation principle of a lubricating pump with a liquid level detection device according to an embodiment of this application is as follows: During use, as the lubricating oil level decreases, the pressure plate 300 slides vertically within the oil storage tank 100. The pressure plate 300 drives the chain 620 to stretch, causing the disc 800 and cylinder 820 to rotate, thereby unwinding the chain 620. After the chain 620 is unwound, the pressure plate 300 continues to move downward vertically, thereby driving the moving block 720 to move downward vertically, causing the first spring 710 to deform under compression. The chain 620 follows the moving block 720 downward vertically, and the chain 620 drives the moving rod 610 downward vertically, causing the first magnetic block 400 to approach the first magnet proximity sensor 510. When the first magnetic block 400 approaches the first magnet proximity sensor 510, the first magnet proximity sensor 510 senses the first magnetic block 400 and outputs a signal. The controller receives the signal and controls the first indicator light 210 to illuminate, thereby prompting the operator to replenish lubricating oil in a timely manner. The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lubrication pump with a liquid level detection device, comprising an oil storage tank (100) and a base (200), wherein the oil storage tank (100) is connected to the base (200), and a pressure plate (300) is slidably connected inside the oil storage tank (100), wherein the periphery of the pressure plate (300) is in contact with the inner wall of the oil storage tank (100), and the pressure plate (300) is slidably connected inside the oil storage tank (100) along the length direction of the oil storage tank (100), characterized in that: The oil storage tank (100) is connected to a support frame (140) at the end away from the base (200). The support frame (140) is slidably connected to a first magnetic block (400). The first magnetic block (400) is slidably connected to the support frame (140) along the length of the oil storage tank (100). The support frame (140) is connected to a moving component (600). The moving component (600) is used to drive the first magnetic block (400) to move with the pressure plate (300). The support frame (140) is provided with a position detector. The position detector is electrically connected to a controller. The controller is electrically connected to a first indicator light (210). The position detector is used to sense the first magnetic block (400) and output a signal. The controller is used to receive the signal and control the first indicator light (210) to light up. When the position detector senses the first magnetic block (400), the pressure plate (300) is located at the bottom of the oil storage tank (100). The controller receives the signal and controls the first indicator light (210) to light up.

2. A lubrication pump with a liquid level detection device according to claim 1, characterized in that: The moving component (600) includes a moving rod (610), a chain (620), and a resetting component (630). The length direction of the moving rod (610) is consistent with the length direction of the oil storage tank (100). The moving rod (610) is slidably connected to the support frame (140) along its length direction. The first magnetic block (400) is connected to the periphery of the moving rod (610). One end of the chain (620) is connected to the moving rod (610), and the other end of the chain (620) is connected to the pressure plate (300). The resetting component (630) is used to drive the moving rod (610) to move along the length direction of the oil storage tank (100) and reset it.

3. A lubrication pump with a liquid level detection device according to claim 2, characterized in that: The support frame (140) is rotatably connected to a disc (800), and the disc (800) is connected to a cylinder (820). The central axis of the cylinder (820) is collinear with the central axis of the disc (800). One end of the chain (620) passes through the circumference of the cylinder (820) and is wound around the cylinder (820). An elastic element is provided on the side of the disc (800) away from the cylinder (820). The elastic element drives the disc (800) to rotate and drives the chain (620) to be wound around the cylinder (820). The disc (800) is slidably connected to the support frame (140) along the length direction of the oil storage tank (100). The support frame (140) is connected to a driving element (700). The driving element (700) is used to drive the disc (800) to move along the length direction of the oil storage tank (100) and reset.

4. A lubrication pump with a liquid level detection device according to claim 2, characterized in that: The support frame (140) is connected to a connecting cylinder (500), the length direction of the connecting cylinder (500) is consistent with the length direction of the moving rod (610), and the moving rod (610) is slidably connected to the connecting cylinder (500) along its length direction.

5. A lubrication pump with a liquid level detection device according to claim 3, characterized in that: The support frame (140) has a moving groove (150) with the length direction of the moving groove (150) aligned with the length direction of the oil storage tank (100). The driving component (700) includes a first spring (710) and a moving block (720). The length direction of the first spring (710) is aligned with the length direction of the oil storage tank (100). One end of the first spring (710) is connected to the moving groove (150), and the other end of the first spring (710) is connected to the moving block (720). The moving block (720) is slidably connected to the moving groove (150) along the length direction of the moving groove (150). The disc (800) is rotatably connected to the moving block (720).

6. A lubrication pump with a liquid level detection device according to claim 2, characterized in that: The reset component (630) includes a second spring (631) and a third spring (632). The length direction of the second spring (631) is consistent with the length direction of the moving rod (610), and the length direction of the third spring (632) is consistent with the length direction of the second spring (631). The second spring (631) is located inside the connecting cylinder (500) and is sleeved on the moving rod (610). The length direction of the second spring (631) is consistent with the length direction of the moving rod (610). The end of the second spring (631) near the oil storage tank (100) is connected to the inner wall of the connecting cylinder (500), and the other end of the second spring (631) is connected to the moving rod (610). One end of the third spring (632) is connected to the end of the moving rod (610) away from the oil storage tank (100), and the other end of the third spring (632) is connected to the inner wall of the connecting cylinder (500).

7. A lubrication pump with a liquid level detection device according to claim 6, characterized in that: The connecting cylinder (500) is open at one end away from the oil storage tank (100), and the connecting cylinder (500) is covered with a mounting cover (540) at the other end away from the oil storage tank (100). The mounting cover (540) is used to open or close the opening at one end of the connecting cylinder (500), and the mounting cover (540) is detachably connected to the connecting cylinder (500).

8. A lubrication pump with a liquid level detection device according to claim 7, characterized in that: The connecting cylinder (500) includes a first cylinder (520) and a second cylinder (530). The central axis of the first cylinder (520) is collinear with the central axis of the second cylinder (530). One end of the first cylinder (520) is connected to the support frame (140). The other end of the first cylinder (520) is detachably connected to the second cylinder (530). The end of the second cylinder (530) away from the first cylinder (520) is detachably connected to the mounting cover (540).

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