Lubricating pump capable of conveniently detecting low liquid level

Abstract

The utility model relates to a lubricating pump facilitating low liquid level detection, and relates to the field of lubricating pumps, the lubricating pump comprises a barrel, a base, an oil supplementing piece and a controller, the barrel is vertically arranged at the top of the base, an oil pressing plate and a downward pressing piece are arranged in the barrel, the downward pressing piece is connected to the top of the oil pressing plate and used for pressing the oil pressing plate downwards, and the controller is connected with the base. The oil pressing plate is in sliding connection with the cylinder body in the height direction of the cylinder body, the oil supplementing piece is communicated with the cylinder body, a detection assembly is arranged at the top of the base and located below the oil pressing plate, and the detection assembly and the oil supplementing piece are both electrically connected with the controller. The lubricating pump has the advantages that the liquid level of lubricating oil in the barrel can be monitored conveniently, and the situation that the lubricating pump cannot work due to oil shortage is avoided as much as possible.

Description

Technical Field

[0001] The present application relates to the field of lubrication pumps, and in particular to a lubrication pump that is convenient for detecting low liquid levels. Background Art

[0002] At present, the lubrication pump is a lubrication device that can supply lubricant to the lubrication parts. Mechanical equipment usually needs regular lubrication. In the past, the main way of lubrication was to perform manual lubrication after a certain maintenance cycle according to the working condition of the equipment, such as grease. Lubrication pumps can make this maintenance work easier. Lubrication pumps are divided into manual lubrication pumps and electric lubrication pumps.

[0003] The Chinese utility model with application number CN202322423360.X discloses an electric lubricating pump with filtering effect, including a cylinder fixedly mounted on the upper end of the base, and an inner cavity is opened at the inner end of the base, a first gear is arranged at the inner end of the inner cavity, and the shaft end of the first gear is connected to the output end of the motor, and a synchronous belt is connected to the outer side of the first gear, and the inner end bearing of the inner cavity is connected to a movable shaft, and the outer surface of the movable shaft is connected to a second gear, and the outer side of the second gear is connected to the synchronous belt. The electric lubricating pump with filtering effect is provided with a guide block and a filter screen, through the filter screen on the surface of the inner cylinder, and the engagement connection between the guide block and the bottom groove, so that the rotation force generated by the motor drives the inner cylinder to rotate in the cylinder through the meshing transmission of the gear synchronous belt, and the lubricating oil inside the inner cylinder will quickly flow to the inside of the cylinder through the filter screen under the action of centrifugal force, and the lubricating oil is filtered through the filter screen to achieve oil filtration and prevent impurities from clogging the pump body.

[0004] During the operation of the lubrication pump, the lubricating oil in the lubrication pump gradually decreases, causing the liquid level to drop. However, the general cylinder is made of aluminum or other metals, and the liquid level of the lubricating oil in the cylinder cannot be observed, which can easily cause the pump to stop working due to lack of oil. Utility Model Content

[0005] In order to facilitate monitoring of the lubricating oil level in the cylinder and to avoid the lubrication pump from failing to work due to lack of oil, the present application provides a lubrication pump that is easy to detect low liquid level.

[0006] The present application provides a lubrication pump that is convenient for detecting low liquid level, which adopts the following technical solution:

[0007] A lubrication pump that is convenient for detecting low liquid level, comprises a cylinder, a base, an oil replenishing member and a controller, the cylinder being vertically arranged on the top of the base, an oil pressure plate and a downward pressure member being arranged in the cylinder, the downward pressure member being connected to the top of the oil pressure plate and used for pressing down the oil pressure plate, the oil pressure plate being slidably connected to the cylinder along the height direction of the cylinder, the oil replenishing member being communicated with the cylinder, a detection component being arranged on the top of the base, the detection component being located below the oil pressure plate, the detection component and the oil replenishing member being electrically connected to the controller, the detection component being used for detecting that the distance between the oil pressure plate and the top of the base is too small and outputting an oil shortage signal, the controller being used for receiving the oil shortage signal and controlling the oil replenishing member to replenish oil into the cylinder.

[0008] By adopting the above technical solution, when the lubrication pump is in use, the oil pressure plate is above the lubricating oil, the lubricating oil in the cylinder gradually decreases, and the lower pressure piece can press down the oil pressure plate, and the oil pressure plate gradually approaches the top of the base until the detection component detects that the distance between the oil pressure plate and the top of the base is too small, that is, the lubricating oil is less, and the controller can control the oil replenishing piece to replenish oil into the cylinder. After the lubricating oil in the cylinder increases, the oil pressure plate gradually rises, so that the lubricating oil level in the cylinder can be monitored to minimize the possibility that the lubrication pump cannot work due to lack of oil.

[0009] Preferably, the detection component includes a moving block and a proximity sensor, the proximity sensor is electrically connected to the controller, the moving block is located below the oil pressure plate, the proximity sensor is located below the moving block, and the proximity sensor is used to detect the approach of the moving block and output an oil shortage signal.

[0010] By adopting the above technical solution, when the oil pressure plate drops to press down the moving block as the lubricating oil in the cylinder gradually decreases, the moving block approaches the proximity sensor. When the proximity sensor detects that the moving block approaches, it outputs an oil shortage signal, and the controller controls the oil replenishing part to replenish oil into the cylinder.

[0011] Preferably, an elastic member is provided between the moving block and the proximity sensor, one end of the elastic member is connected to the bottom of the moving block, and the other end of the elastic member is connected to the proximity sensor.

[0012] By adopting the above technical solution, when the oil pressure plate presses down the moving block, the moving block moves close to the proximity sensor and the elastic part is compressed. When the controller controls the oil replenishing part to replenish oil into the cylinder, the oil pressure plate moves away from the moving block, and the elastic part elastically resets the moving block to make the moving block move away from the proximity sensor.

[0013] Preferably, the elastic member is a first spring, which is vertically arranged and has two ends respectively connected to the moving block and the proximity sensor.

[0014] By adopting the above technical solution, the first spring is compressed while the moving block moves close to the proximity sensor, and the first spring can reset the moving block away from the proximity sensor, so that the first spring can avoid interfering with the proximity sensor as much as possible.

[0015] Preferably, the detection component further comprises a guide tube, the guide tube is vertically arranged, the bottom end of the moving block is located in the guide tube, the top end of the moving block protrudes out of the top end of the guide tube, and the proximity sensor is located in the guide tube.

[0016] By adopting the above technical solution, the moving block can move along the guide tube in the guide tube to approach or move away from the proximity sensor. The guide tube can play a guiding role, which can improve the movement stability of the moving block, thereby improving the detection accuracy of the proximity sensor.

[0017] Preferably, a section of the guide tube located above the proximity sensor is provided with a plurality of through holes.

[0018] By adopting the above technical solution, the lubricating oil in the cylinder can enter the guide tube through the through hole, so as to balance the pressure inside and outside the cylinder. When the moving block moves close to the proximity sensor, the moving block can squeeze the lubricating oil in the guide tube, and the lubricating oil can be squeezed out of the guide tube through the through hole. When the moving block moves away from the proximity sensor, negative pressure is present in the guide tube, and the lubricating oil outside the guide tube can be sucked into the guide tube, so as to facilitate the movement of the moving block in the guide tube.

[0019] Preferably, a first limiting ring is provided at the top end of the guide tube, and a second limiting ring is sleeved on one end of the moving block located in the guide tube, and the first limiting ring is used to limit the second limiting ring.

[0020] By adopting the above technical solution, when the elastic member elastically resets the moving block, the moving block moves away from the proximity sensor, and the second limiting ring is limited by the first limiting ring, thereby limiting the moving block.

[0021] Preferably, the proximity sensor is a magnet proximity sensor, the moving block comprises a shell and a magnetic block, a receiving groove is provided at the bottom of the shell, the magnetic block is located in the receiving groove, and the opening of the receiving groove is opposite to the proximity sensor.

[0022] By adopting the above technical solution, the oil pressure plate can press down the shell, and the shell drives the magnetic block to approach the magnet proximity sensor, so that the magnet proximity sensor can detect the approach of the magnet.

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

[0024] 1. When the lubrication pump is in use, the oil pressure plate is above the lubrication oil, and the lubrication oil in the cylinder gradually decreases. The lower pressure piece can press down the oil pressure plate, and the oil pressure plate gradually approaches the top of the base until the detection component detects that the distance between the oil pressure plate and the top of the base is too small, that is, the lubrication oil is less. The controller can control the oil replenishing piece to replenish oil into the cylinder. After the lubrication oil in the cylinder increases, the oil pressure plate gradually rises, so that the lubrication oil level in the cylinder can be monitored to avoid the lubrication pump from failing to work due to lack of oil.

[0025] 2. When the oil pressure plate drops to press the moving block as the lubricating oil in the cylinder gradually decreases, the moving block approaches the proximity sensor. When the proximity sensor detects that the moving block approaches, it outputs an oil shortage signal, and the controller controls the oil replenishing part to replenish oil into the cylinder;

[0026] 3. When the oil pressure plate presses down the moving block, the moving block moves close to the proximity sensor and the elastic part is compressed. When the controller controls the oil replenishing part to replenish oil into the cylinder, the oil pressure plate moves away from the moving block, and the elastic part elastically resets the moving block to make the moving block move away from the proximity sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a lubrication pump that is convenient for detecting low liquid level according to an embodiment of the present application.

[0028] Figure 2 This is a schematic structural diagram of a lubrication pump with its cylinder hidden, which is convenient for detecting low liquid levels according to an embodiment of the present application.

[0029] Figure 3 It is a partial structural schematic diagram of a lubrication pump that is convenient for detecting low liquid levels according to an embodiment of the present application, and is used to display the detection component.

[0030] Figure 4 It is a partial structural cross-sectional view of a lubrication pump that is convenient for detecting low liquid levels according to an embodiment of the present application, and is used to display elastic parts.

[0031] Description of reference numerals:

[0032] 100, cylinder; 101, oil pressure plate; 102, lower pressure piece;

[0033] 200, base;

[0034] 300, oil filling parts;

[0035] 400, detection assembly; 401, moving block; 402, proximity sensor; 403, guide tube; 404, through hole; 405, first limiting ring; 406, second limiting ring; 407, housing; 408, magnetic block; 409, receiving groove;

[0036] 500. Elastic parts. DETAILED DESCRIPTION

[0037] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0038] The present application embodiment discloses a lubrication pump that is convenient for detecting low liquid level. Figure 1 and Figure 2 The lubrication pump for detecting low liquid level includes a cylinder 100 and a base 200. The cylinder 100 is installed on the top of the base 200. The cylinder 100 is filled with lubricating oil. A pressing piece 102 and an oil pressure plate 101 are provided in the cylinder 100. The lubricating oil is located between the oil pressure plate 101 and the top of the base 200. The oil pressure plate 101 is used to press the lubricating oil through the pressing piece 102. The cylinder 100 is connected to an oil replenishing piece 300, and the oil replenishing piece 300 is used to replenish the lubricating oil into the cylinder 100.

[0039] Reference Figure 1 and Figure 2 The cylinder 100 is hollow cylindrical and vertically connected to the top of the base 200. The oil pressure plate 101 is disc-shaped and horizontally arranged. The lower pressing piece 102 is located above the oil pressure plate 101. The lower pressing piece 102 adopts a second spring, which is arranged vertically. The top of the second spring is connected to the inner wall of the top of the cylinder 100, and the bottom of the second spring is connected to the center of the top of the oil pressure plate 101. When the lower pressing piece 102 presses the oil pressure plate 101 downward, the oil pressure plate 101 is slidably connected to the inner wall of the cylinder 100 in the vertical direction. The oil replenishing piece 300 adopts an oil pump, which is connected to the bottom of the cylinder 100 through a pipeline.

[0040] Reference Figure 2 , Figure 3 and Figure 4 A detection assembly 400 is disposed on the top of the base 200, and the detection assembly 400 includes a moving block 401, a proximity sensor 402, and a guide tube 403. The guide tube 403 is a vertically disposed circular tube, which is located at the bottom of the cylinder 100 and fixed to the top of the base 200. A first limiting ring 405 is integrally formed on the inner circumferential wall of the top end of the guide tube 403, and the first limiting ring 405 is annular and its central axis is colinear with the central axis of the guide tube 403.

[0041] The moving block 401 includes a shell 407 and a magnetic block 408. The shell 407 is cylindrical and is inserted into the first limiting ring 405. The top of the shell 407 protrudes from the top of the guide tube 403. The bottom of the shell 407 is located in the guide tube 403 and is provided with a receiving groove 409. The receiving groove 409 is opened downward. The magnetic block 408 is located in the receiving groove 409 and connected to the inner wall of the receiving groove 409. The shell 407 is sleeved with a second limiting ring 406. The second limiting ring 406 is annular and located below the first limiting ring 405. The outer peripheral wall of the second limiting ring 406 is slidably connected to the inner peripheral wall of the guide tube 403 in the vertical direction. The proximity sensor 402 adopts a magnetic proximity sensor. The probe of the magnetic proximity sensor is vertically arranged in the bottom end of the guide tube 403 and faces the magnetic block 408. A plurality of through holes 404 are formed on the peripheral wall of the guide tube 403. In the present embodiment, each through hole 404 is distributed in a section of the guide tube 403 above the probe of the proximity sensor 402. An elastic member 500 is disposed in the guide tube 403. The elastic member 500 is a first spring. The first spring is vertically disposed. The top end of the first spring is connected to one end of the housing 407 located in the guide tube 403, and the bottom end of the first spring is connected to the probe of the magnet proximity sensor.

[0042] The proximity sensor 402 is electrically connected to a controller, which is a S7-200 PLC, and the oil replenishing member 300 is electrically connected to the controller. The proximity sensor 402 is used to detect the proximity of the magnetic block 408 and output an oil shortage signal, and the controller is used to receive the oil shortage signal and control the oil replenishing member 300 to replenish oil into the cylinder 100.

[0043] The implementation principle of a lubrication pump that is convenient for detecting low liquid level in an embodiment of the present application is as follows: during the use of the lubrication pump, the lubricating oil in the cylinder 100 gradually decreases, and the lower pressing member 102 can gradually press down the oil pressing plate 101 to make the oil pressing plate 101 gradually move closer to the top of the base 200. When the lubricating oil in the cylinder 100 is too little, the distance between the oil pressing plate 101 and the top of the base 200 is too small. At this time, the oil pressing plate 101 presses down the shell 407, and the elastic member 500 is deformed. The shell 407 drives the magnetic block 408 to move closer to the probe of the proximity sensor 402. At the same time, the shell 407 squeezes out part of the lubricating oil in the guide tube 403. The proximity sensor 402 detects that the magnetic block 408 is approaching and outputs an oil shortage signal. The controller controls the oil replenishing member 300 to replenish the lubricating oil into the cylinder 100, and the lubricating oil enters the cylinder 100 from the bottom of the cylinder 100.

[0044] As the lubricating oil in the cylinder 100 is input, the lubricating oil can push the oil pressure plate 101 upward to make the oil pressure plate 101 rise, the elastic member 500 resets the shell 407, the magnetic block 408 moves away from the probe of the proximity sensor 402, and part of the lubricating oil enters the guide tube 403, thereby completing the oil replenishment in the cylinder 100, and then it is convenient to monitor the lubricating oil level in the cylinder 100 to try to avoid the lubrication pump from failing to work due to lack of oil.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lubrication pump that is convenient for detecting low liquid level, characterized in that: The invention comprises a cylinder (100), a base (200), an oil replenishing member (300) and a controller, wherein the cylinder (100) is vertically arranged on the top of the base (200), an oil pressure plate (101) and a downward pressure member (102) are arranged in the cylinder (100), the downward pressure member (102) is connected to the top of the oil pressure plate (101) and is used to press the oil pressure plate (101) downward, the oil pressure plate (101) is slidably connected to the cylinder (100) along the height direction of the cylinder (100), and the oil replenishing member (300) is connected to the cylinder (100). The cylinder (100) is connected, a detection component (400) is arranged on the top of the base (200), the detection component (400) is located below the oil pressure plate (101), the detection component (400) and the oil replenishing component (300) are both electrically connected to the controller, the detection component (400) is used to detect that the distance between the oil pressure plate (101) and the top of the base (200) is too small and output an oil shortage signal, and the controller is used to receive the oil shortage signal and control the oil replenishing component (300) to replenish oil into the cylinder (100).

2. The lubrication pump for facilitating low liquid level detection according to claim 1, characterized in that: The detection component (400) comprises a moving block (401) and a proximity sensor (402), wherein the proximity sensor (402) is electrically connected to the controller, the moving block (401) is located below the oil pressure plate (101), and the proximity sensor (402) is located below the moving block (401), and the proximity sensor (402) is used to detect the proximity of the moving block (401) and output an oil shortage signal.

3. The lubrication pump for facilitating low liquid level detection according to claim 2, characterized in that: An elastic member (500) is provided between the moving block (401) and the proximity sensor (402), one end of the elastic member (500) being connected to the bottom of the moving block (401), and the other end of the elastic member (500) being connected to the proximity sensor (402).

4. The lubrication pump for facilitating low liquid level detection according to claim 3, characterized in that: The elastic member (500) adopts a first spring, which is arranged vertically and has two ends respectively connected to the moving block (401) and the proximity sensor (402).

5. The lubrication pump for facilitating low liquid level detection according to claim 2, characterized in that: The detection assembly (400) further comprises a guide tube (403), wherein the guide tube (403) is arranged vertically, the bottom end of the moving block (401) is located in the guide tube (403), the top end of the moving block (401) protrudes from the top end of the guide tube (403), and the proximity sensor (402) is located in the guide tube (403).

6. The lubrication pump for facilitating low liquid level detection according to claim 5, characterized in that: A section of the guide tube (403) located above the proximity sensor (402) is provided with a plurality of through holes (404).

7. The lubrication pump for facilitating low liquid level detection according to claim 5, characterized in that: A first limiting ring (405) is arranged at the top end of the guide tube (403), and a second limiting ring (406) is sleeved on one end of the moving block (401) located inside the guide tube (403), wherein the first limiting ring (405) is used to limit the second limiting ring (406).

8. The lubrication pump for facilitating low liquid level detection according to claim 2, characterized in that: The proximity sensor (402) is a magnetic proximity sensor. The moving block (401) comprises a shell (407) and a magnetic block (408). A receiving groove (409) is provided at the bottom of the shell (407). The magnetic block (408) is located in the receiving groove (409). The opening of the receiving groove (409) is directly opposite to the proximity sensor (402).

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