Lubricating pump pressure regulating overflow and pressure value sensing device

Abstract

The utility model relates to the technical field of lubricating pumps, in particular to a lubricating pump pressure regulating overflow and pressure value sensing device which comprises a monitoring cavity fixed on a pump plate, the monitoring cavity partially extends outwards to form an H-shaped fluid cavity, the four ends of the monitoring cavity are open, one side of the monitoring cavity is provided with an oil pressure input end, and the other side of the monitoring cavity is provided with an oil pressure output end. An oil pressure input end is arranged on one side of the monitoring cavity, an oil pressure output end is arranged on the other side of the monitoring cavity, a pressure piston is arranged in an opening in the side, opposite to the oil pressure input end, in the monitoring cavity, a pressure transmission guide rod is arranged at one end of the pressure piston, and a pressure monitoring spring arranged on the outer side of the pressure transmission guide rod in a sleeving mode is further arranged at the end of the pressure piston. The monitoring cavity is provided with a microswitch, and the pressure transmission guide rod corresponds to a control handle of the microswitch. The lubricating pump pressure regulating overflow and pressure value sensing device is high in automation degree, and when the pressure in a pipeline is low and no oil is available, a worker can be reminded to add lubricating oil in time.

Description

Technical Field

[0001] This utility model relates to the field of lubrication pump technology, specifically a lubrication pump pressure regulating overflow and pressure value sensing device. Background Technology

[0002] A lubrication pump is a lubrication device that supplies lubricant to lubrication points. It is suitable for lubricating large, medium, and small equipment across various industries, and is particularly suitable for equipment with strict lubrication metering requirements. It offers accurate lubrication metering, saves oil, produces no pollution, requires no maintenance, has low production costs, and ensures reliable system operation, guaranteeing various lubrication requirements of equipment.

[0003] However, with existing lubrication pumps, it is inconvenient for operators to control the timing of adding lubricating oil when conveying oil. If the oil is not added in time, the lubrication pump will work without load when there is no oil in the conveying channel, which will cause serious damage to the equipment and even lead to irreversible failure. At the same time, failure to add lubricating oil to the mechanical equipment in a timely manner will also affect the normal operation of the equipment. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this utility model provides a lubrication pump pressure regulation overflow and pressure value sensing device, which can remind personnel to add lubricating oil in a timely manner, avoid the lubrication pump from working under no-load, and ensure that lubricating oil can be added to mechanical equipment in a timely manner. This solves the problem of not being able to add lubricating oil to mechanical equipment in a timely manner, thereby affecting the normal operation of the equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lubrication pump pressure regulation overflow and pressure value sensing device, comprising a monitoring cavity fixed to a pump plate, wherein the monitoring cavity extends outward to form an H-shaped fluid cavity and is open at all four ends, one side of the monitoring cavity has an oil pressure input end, and the other side of the monitoring cavity has an oil pressure output end, wherein a pressure piston is disposed in the opening on the side of the monitoring cavity opposite to the oil pressure input end, one end of the pressure piston is provided with a pressure transmission guide rod, and the end of the pressure piston is also provided with a pressure monitoring spring sleeved on the outside of the pressure transmission guide rod, wherein a micro switch is provided on the monitoring cavity, and the pressure transmission guide rod corresponds to the control handle of the micro switch. The lubrication pump and gear pump provide concentrated oil pressure. The oil enters from the oil pressure input end, fills the monitoring chamber, and then flows out from the oil pressure output end. When the pressure in the monitoring chamber reaches a certain level, it pushes the pressure piston and pressure transmission guide rod, compressing the pressure monitoring spring. This causes the pressure transmission guide rod to press the micro switch handle, thereby turning the micro switch on or off. The PLC computer determines that the lubrication supply is complete based on the on / off cycle.

[0006] Furthermore, both ends of the monitoring cavity penetrate the pump plate, and one end of the monitoring cavity is locked to the pump plate by a fixing nut. After the monitoring cavity and the pump plate are quickly installed, monitoring can be performed through the monitoring cavity.

[0007] Furthermore, the hydraulic input terminal and the hydraulic output terminal are respectively installed into the openings on both sides of the monitoring cavity through connecting joints.

[0008] Furthermore, a microswitch base is fixed to the end of the monitoring cavity. The microswitch is mounted on the microswitch base with fixing screws. Part of the microswitch base extends into the opening of the monitoring cavity. The pressure transmission guide rod extends into the microswitch base and can extend out from the microswitch base. One end of the pressure monitoring spring abuts against the pressure piston, and the other end abuts against the microswitch base. The microswitch can be mounted above the pressure transmission guide rod through the microswitch base, facilitating the pressure transmission guide rod to transmit pressure to the microswitch's opening handle.

[0009] Furthermore, an O-ring is embedded in the monitoring cavity, and the microswitch base abuts against the O-ring. When the microswitch base is partially embedded in the monitoring cavity, the O-ring ensures its sealing performance.

[0010] Furthermore, the monitoring chamber has an opening on its right side, and an oil-sealing screw is installed at the opening. Removing the oil-sealing screw allows for inspection of whether the oil delivery channels within the monitoring chamber are aging.

[0011] Furthermore, a steel ball is installed in the monitoring chamber on one side opposite the oil pressure output end, and an overflow spring is also provided in the monitoring chamber to abut against the steel ball. The steel ball can block the outlet on this side. When the pressure inside the monitoring chamber is too high, the steel ball moves and compresses the overflow spring. When the steel ball no longer blocks the outlet on this side, some fluid will flow out from the outlet on this side, realizing the pressure regulation function.

[0012] Furthermore, a hollow pressure adjusting screw is provided at the end of the monitoring cavity via a set nut, with one end of the pressure adjusting screw abutting against the overflow spring. A steel ball is inserted into the outlet on this side, and the pressure adjusting screw restricts the overflow spring below the steel ball. Finally, the pressure adjusting screw is locked to the end of the monitoring cavity via the set nut, thus completing the installation of the above structure.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] 1. The pressure regulating overflow and pressure value sensing device of this lubrication pump is simple and convenient to operate, with a high degree of automation. When the pressure in the pipeline is low and there is no oil available, it can promptly remind the staff to add lubricating oil. At the same time, when the pressure in the pipeline is too high, it can also release the pressure in the pipeline to reduce safety hazards.

[0015] 2. The pressure regulating overflow and pressure value sensing device of this lubrication pump, when the pressure in the pipeline is normal, the piston is under pressure, which is transmitted to the micro switch through the pressure transmission guide rod, thereby driving the micro switch to turn on or off. The PLC computer determines that the lubrication supply is complete according to the method of turning on or off once. If there is no oil in the oil tank, the gear pump of the lubrication pump will not have oil to supply, and its pressure will not reach a certain value. The internal piston will not reciprocate, and the micro switch will not provide a signal to the PLC computer for turning on or off once. The PLC will then issue an oil-free and pressure-free alarm message to remind the staff to add lubricating oil in time.

[0016] 3. The pressure regulating overflow and pressure value sensing device of this lubrication pump can block the pressure relief outlet with steel balls. When the pressure inside the monitoring chamber is too high, the steel balls will be moved by the pressure and compress the overflow spring. When the steel balls are no longer blocking the outlet on that side, some fluid will flow out from the outlet on that side, thus realizing the pressure regulating function. This avoids the possibility that excessive pressure, if not dealt with in time, may lead to pipeline rupture or equipment explosion, threatening the personal safety of operators. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram showing the positions of the micro switch and the pressure transmission guide rod in this utility model;

[0019] Figure 3 This is a schematic diagram showing the positions of the steel ball and the overflow spring in this utility model.

[0020] In the diagram: 1. Pressure output wire; 2. Fixing screw; 3. Micro switch; 4. Micro switch base; 5. Pressure monitoring spring; 6. Pressure transmission guide rod; 7. O-ring seal; 8. Pressure piston; 9. Oil plug screw; 10. Pump plate; 11. Monitoring chamber; 12. Connecting joint; 13. Oil pressure input end; 14. Oil pressure output end; 15. Steel ball; 16. Fixing nut; 17. Overflow spring; 18. Set nut; 19. Pressure adjusting screw. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-3The lubrication pump pressure regulation overflow and pressure value sensing device in this embodiment includes a monitoring cavity 11 fixed on the pump plate 10. The monitoring cavity 11 extends outward to form an H-shaped fluid cavity and has four open ends. One side of the monitoring cavity 11 has an oil pressure input end 13 and the other side of the monitoring cavity 11 has an oil pressure output end 14.

[0023] The bottom end of the monitoring chamber 11 is passed through the pump plate 10, and one end is locked onto the pump plate 10 by the fixing nut 16. After the monitoring chamber 11 and the pump plate 10 are installed, the monitoring work can be carried out through the monitoring chamber 11. During operation, the oil enters the monitoring chamber 11 through the oil pressure input end 13 and is discharged from the oil pressure output end 14.

[0024] It should be noted that the hydraulic input end 13 and the hydraulic output end 14 are respectively installed into the openings on both sides of the monitoring cavity 11 through the connecting joint 12. Chinese patent CN 207132002 U discloses a quick connection sealing structure for a pipe. The above patent describes its specific connection structure and principle, so it will not be repeated here.

[0025] In this embodiment, as Figure 1-2 As shown, a pressure piston 8 is installed in the opening on one side of the monitoring chamber 11 opposite to the oil pressure input end 13. One end of the pressure piston 8 is provided with a pressure transmission guide rod 6. The end of the pressure piston 8 is also provided with a pressure monitoring spring 5 sleeved on the outside of the pressure transmission guide rod 6. A micro switch 3 is provided on the monitoring chamber 11. The pressure transmission guide rod 6 corresponds to the control handle of the micro switch 3.

[0026] The lubrication pump and gear pump supply concentrated oil pressure. The oil enters from the oil pressure input end 13, fills the chamber of the monitoring cavity 11, and flows out from the oil pressure output end 14. When the pressure in the monitoring cavity 11 reaches a certain level, it pushes the pressure piston 8 and the pressure transmission guide rod 6, compressing the pressure monitoring spring 5. This causes the pressure transmission guide rod 6 to press the handle of the micro switch 3, thereby turning the micro switch 3 on or off. The PLC computer determines that the lubrication supply is complete based on the on / off cycle. If there is no oil in the oil tank, the gear pump of the lubrication pump will not supply oil, and its pressure will not reach a certain value. The internal pressure piston 8 will not reciprocate, and the micro switch 3 will not provide an on / off signal to the PLC computer. The PLC will then issue an oil-free and pressure-free alarm message to remind the staff to add lubricating oil in time.

[0027] Furthermore, a pressure value output wire 1 is installed on the micro switch 3. After the micro switch 3 is turned on, the pressure signal can be output through the pressure value output wire 1.

[0028] In addition, a micro switch base 4 is fixed to the end of the corresponding monitoring cavity 11. The micro switch 3 is installed on the micro switch base 4 by fixing screw 2. Part of the micro switch base 4 extends into the opening of the monitoring cavity 11. The pressure transmission guide rod 6 extends into the micro switch base 4 and can extend out from the micro switch base 4. One end of the pressure monitoring spring 5 abuts against the pressure piston 8, and the other end abuts against the micro switch base 4.

[0029] The micro switch 3 can be installed above the pressure transmission guide rod 6 via the micro switch base 4, so that the pressure transmission guide rod 6 can transmit pressure to the opening handle of the micro switch 3.

[0030] An O-ring 7 is also embedded in the monitoring cavity 11. The micro switch base 4 abuts against the O-ring 7. When part of the micro switch base 4 is embedded in the monitoring cavity 11, the O-ring 7 can ensure its sealing.

[0031] Furthermore, the monitoring chamber 11 has an opening on the right side, and an oil-sealing screw 9 is provided at the opening. The opening can be blocked by the oil-sealing screw 9. When the oil-sealing screw 9 is removed, the oil supply channel inside the monitoring chamber 11 can be checked to determine whether the oil leakage is caused by friction or aging due to long-term use, and to remind the staff to troubleshoot the fault in time.

[0032] In this embodiment, as Figure 1 , Figure 3 As shown, a steel ball 15 is provided in the opening on one side of the monitoring chamber 11 opposite to the oil pressure output terminal 14. An overflow spring 17 that abuts against the steel ball 15 is also provided in the monitoring chamber 11. The steel ball 15 can block the outlet on this side. When the pressure in the monitoring chamber 11 is too high, the steel ball 15 moves and compresses the overflow spring 17. When the steel ball 15 no longer blocks the outlet on this side, some fluid will flow out from the outlet on this side, realizing the pressure regulation function.

[0033] In addition, a hollow pressure adjusting screw 19 is provided at the end of the monitoring cavity 11 via a set nut 18. One end of the pressure adjusting screw 19 abuts against the overflow spring 17. When the end of the pressure adjusting screw 19 is installed, the steel ball 15 is inserted into the outlet on that side, and the pressure adjusting screw 19 restricts the overflow spring 17 below the steel ball 15. Finally, the pressure adjusting screw 19 is locked to the end of the monitoring cavity 11 by the set nut 18, thus realizing the installation of the above structure.

[0034] In summary, in use, this utility model provides concentrated oil pressure through a gear pump. The oil enters from the oil pressure input end 13, fills the chamber of the monitoring cavity 11, and flows out from the oil pressure output end 14. When a certain pressure is reached in the chamber of the monitoring cavity 11, it pushes the pressure piston 8 and the pressure transmission guide rod 6, compressing the pressure monitoring spring 5. This causes the pressure transmission guide rod 6 to press the handle of the micro switch 3, thereby turning the micro switch 3 on or off. The PLC computer determines that the lubrication supply is complete based on the on / off cycle. If there is no oil in the oil tank, the gear pump of the lubrication pump will not supply oil, and its pressure will not reach a certain value. The internal pressure piston 8 will not reciprocate, and the micro switch 3 will not provide an on / off signal to the PLC computer. The PLC will then issue an oil-free and pressure-free alarm message to remind the staff to add lubricating oil in time. It can also detect the oil supply channel in the monitoring cavity 11 to determine whether oil leakage is caused by friction or aging due to long-term use, and remind the staff to troubleshoot the fault in time.

[0035] Meanwhile, the steel ball 15 can block the outlet on this side. When the pressure inside the monitoring chamber 11 is too high, the steel ball 15 moves and compresses the overflow spring 17. When the steel ball 15 no longer blocks the outlet on this side, some fluid will flow out from the outlet on this side, realizing the pressure regulation function. This avoids the possibility that excessive pressure, if not dealt with in time, may lead to pipeline rupture or equipment explosion, threatening the personal safety of operators.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used merely 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0037] 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, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lubrication pump pressure regulating overflow and pressure value sensing device, characterized in that The utility model provides a kind of oil pressure monitoring device, including fixed on pump plate (10) monitoring cavity (11), the monitoring cavity (11) partially extends outward and forms H-shaped fluid cavity, and four ends are open, the monitoring cavity (11) one side opening has oil pressure input end (13), the other side opening of the monitoring cavity (11) has oil pressure output end (14), the monitoring cavity (11) in with oil pressure input end (13) opposite side opening is provided with pressure piston (8), one end of the pressure piston (8) is equipped with pressure transmission guide rod (6), the end of the pressure piston (8) is further equipped with pressure monitoring spring (5) that is sleeved on the outside of pressure transmission guide rod (6), the monitoring cavity (11) is equipped with microswitch (3), and pressure transmission guide rod (6) corresponds with the control handle of microswitch (3).

2. A lubrication pump pressure regulating overflow and pressure value sensing device according to claim 1, characterized in that: The both ends of the monitoring cavity (11) penetrate the pump plate (10), and one end of the monitoring cavity (11) is locked on the pump plate (10) by the fixing nut (16).

3. A lubrication pump pressure regulating overflow and pressure value sensing device according to claim 1, characterized in that: The oil pressure input end (13) and the oil pressure output end (14) are respectively installed into the opening of the monitoring cavity (11) by the connecting joint (12).

4. A lubricant pump pressure regulating overflow and pressure value sensing device as set forth in claim 1, wherein: The end of the monitoring cavity (11) is fixed with the microswitch seat (4), the microswitch (3) is installed on the microswitch seat (4) by the fixing screw (2), part of the microswitch seat (4) extends into the opening of the monitoring cavity (11), the pressure transmission guide rod (6) extends into the microswitch seat (4) and can be stretched out from the microswitch seat (4), one end of the pressure monitoring spring (5) abuts against the pressure piston (8), and the other end abuts against the microswitch seat (4).

5. A lubricant pump pressure regulating overflow and pressure value sensing device according to claim 4, characterized in that: The monitoring cavity (11) is further embedded with the O-shaped sealing ring (7), and the microswitch seat (4) abuts against the O-shaped sealing ring (7).

6. A lubricant pump pressure regulating overflow and pressure value sensing device as set forth in claim 1, wherein: The right side of the monitoring cavity (11) has an opening, and the opening is provided with the oil plug screw (9).

7. A lubricant pump pressure regulating overflow and pressure value sensing device as set forth in claim 1, wherein: The side opening of the monitoring cavity (11) opposite to the oil pressure output end (14) is provided with the steel ball (15), and the monitoring cavity (11) is further provided with the overflow spring (17) abutting against the steel ball (15).

8. A lubrication pump pressure regulating overflow and pressure value sensing device according to claim 7, characterized in that: The end of the monitoring cavity (11) is provided with the pressure regulating screw (19) in a hollow shape by the locking nut (18), and one end of the pressure regulating screw (19) abuts against the overflow spring (17).

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