Intelligent oiler

Abstract

This invention discloses an intelligent oil injector, comprising an oil cup, an oil reservoir, and a housing, further comprising: a cam rotor pump disposed within the housing, wherein the oil inlet of the cam rotor pump is connected to the oil nozzle of the oil reservoir, and the oil outlet of the cam rotor pump is connected to the oil outlet at the bottom of the housing via an oil outlet pipe; and a motor disposed within the housing and below the cam rotor pump, wherein the motor output shaft is connected to a gearbox input shaft, and the gearbox output shaft is connected to the cam rotor pump input shaft. A magnet is disposed on the cam rotor pump input shaft, and a magnetic field sensor is disposed on the cam rotor pump housing to measure the number of times the magnet passes through the magnetic field sensor as the cam rotor pump input shaft rotates, thereby determining the number of rotations of the cam rotor pump input shaft. This invention can accurately control the oil injection volume of the intelligent oil injector by controlling the number of rotations of the cam rotor pump input shaft.

Description

Technical Field

[0001] This invention relates to the field of lubricating oil injection devices for mechanical equipment. More specifically, this invention relates to an intelligent oil injector. Background Technology

[0002] With the rapid development of automation and intelligence in my country's petrochemical industry, enterprises have placed higher demands on the safe, stable, and continuous production of their equipment. Therefore, the daily maintenance of equipment is receiving increasing attention from enterprises. Lubrication is paramount in equipment maintenance; the choice of lubrication method and the effectiveness of lubrication directly impact the safety, stability, and continuous production of the equipment.

[0003] Previously, lubrication of the equipment was mainly done manually, relying heavily on the worker's experience. This meant that the amount of lubricating oil injected could be too much or too little, both of which could negatively impact the equipment. Therefore, oil injectors have been developed to inject oil into the equipment. However, the oil pumps used in existing oil injectors still cannot provide timely and precise oil injection. Summary of the Invention

[0004] One object of the present invention is to solve at least the above-mentioned problems and to provide at least the advantages that will be described later.

[0005] Another objective of this invention is to provide an intelligent oil injector that can accurately measure the number of rotations of the input shaft of a cam rotor pump. Since the delivery volume of one rotation of the cam rotor pump is fixed, the oil injection amount of the intelligent oil injector can be accurately controlled by controlling the number of rotations of the input shaft of the cam rotor pump.

[0006] To achieve these and other advantages according to the present invention, an intelligent oil injector is provided, comprising an oil cup, an oil reservoir, and a housing, wherein the oil reservoir is disposed on the top of the housing, the oil cup is disposed over the oil reservoir and detachably connected to the housing, and a spring and a pressure cap are further disposed between the oil cup and the oil reservoir, and the device further comprises:

[0007] A cam rotor pump is disposed inside the housing, with the oil inlet of the cam rotor pump facing upward and the oil outlet facing downward. A first through hole is provided at the top of the housing, through which the oil nozzle of the oil tank passes and communicates with the oil inlet of the cam rotor pump. An oil outlet is provided at the bottom of the housing, and the oil outlet of the cam rotor pump is communicated with the oil outlet through an oil outlet pipe.

[0008] An electric motor is disposed within the housing and located below the cam rotor pump. The output shaft of the electric motor is connected to an input shaft of a gearbox, and the output shaft of the gearbox is connected to the input shaft of the cam rotor pump.

[0009] The cam rotor pump has a magnet installed on its input shaft and a magnetic field sensor installed on its housing to measure the number of times the magnet passes through the magnetic field sensor as the cam rotor pump's input shaft rotates, thereby determining the number of rotations of the cam rotor pump's input shaft.

[0010] Preferably, the intelligent oil injector further includes:

[0011] The control system is communicatively connected to the magnetic field sensor and the motor. The control system is used to obtain the single oil injection volume set by the user, calculate the number of rotations of the cam rotor pump input shaft in a single operation based on the oil injection volume of the cam rotor pump when the input shaft rotates once, which is measured in advance, and the control system also uses the magnetic field sensor to count the number of rotations of the cam rotor pump input shaft, thereby controlling the start and stop of the motor in a single operation.

[0012] Preferably, the control system is also used to acquire the total oil filling time set by the user, calculate the total number of oil fillings based on the pre-stored total oil volume of the oil tank and the single oil filling volume set by the user, calculate the single oil filling time based on the time it takes for the input shaft of the cam rotor pump to rotate one revolution and the number of revolutions of the input shaft of the cam rotor pump in a single cycle, calculate the actual total oil filling time based on the total number of oil fillings and the single oil filling time, and finally calculate the oil filling interval based on the total oil filling time set by the user, the actual total oil filling time, and the total number of oil fillings, and control the motor to operate at a timed interval based on the oil filling interval.

[0013] Preferably, the intelligent oil injector further includes:

[0014] A touch panel is disposed on the outer wall of the housing. The touch panel is connected to the control system and is used to acquire setting information input by the user.

[0015] Preferably, the intelligent oil injector further includes:

[0016] A battery pack is disposed inside the housing and located to the left of the cam rotor pump, and the battery pack is electrically connected to the motor.

[0017] Preferably, the oil cup is provided with a horizontal partition to divide the space inside the oil cup into an upper pressure chamber and a lower pressure chamber. The spring and the pressure cap are disposed in the lower pressure chamber. The side wall of the lower pressure chamber is provided with a first air hole for communicating with the external air pressure.

[0018] The upper pressure chamber is a sealed chamber. A sleeve is provided at the center of the upper pressure chamber. The lower end of the sleeve is connected to the partition plate, and the upper end is connected to the inner bottom surface of the oil cup. A second air hole is provided on the side wall of the sleeve. A second through hole is provided at the center of the partition plate. The second through hole is located within the inner hole of the sleeve and the inner diameter of the second through hole is the same as the inner diameter of the sleeve. A pressure rod is provided on the top of the pressure cap. The pressure rod passes through the second through hole and extends into the sleeve. The pressure rod is slidably sealed to the inner wall of the sleeve. Initially, the top of the pressure rod is located above the second air hole.

[0019] The oil cup has a first threaded hole at the bottom portion outside the sleeve, and a first one-way valve connected to the first threaded hole, which is used to fill the upper pressure chamber outside the sleeve with high-pressure gas. The oil cup also has a second threaded hole at the bottom portion inside the sleeve, and a second one-way valve connected to the second threaded hole, which is used to connect the pressure rod with the pressure cap when the top of the pressure rod is above the second air hole, so that the sleeve is connected to the external air pressure through the second one-way valve. When the top of the pressure rod is below the second air hole, a high-pressure chamber is formed because the sleeve is connected to the upper pressure chamber outside the sleeve, and the second one-way valve isolates the sleeve from the external air pressure.

[0020] Preferably, the second vent is located at one-third of the height of the sleeve from bottom to top.

[0021] This invention offers at least the following advantages: It accurately measures the number of rotations of the input shaft of the cam rotor pump. Since the delivery volume of one rotation of the cam rotor pump is fixed, the oil injection volume of the intelligent oiler can be accurately controlled by controlling the number of rotations of the input shaft. Furthermore, compared to screw pumps, cam rotor pumps are more efficient, have better self-priming capabilities, and exhibit virtually zero wear between components, resulting in a longer service life. They also prevent wear particles from being introduced into the lubricating grease, ensuring better safety. Additionally, when the grease in the oil tank is depleted, the spring gradually extends, reducing the pressure applied to the oil tank. At this point, the cam rotor pump's oil extraction becomes relatively slow. This invention addresses this by altering the oil cup structure, dividing the oil cup into different pressure chambers. When the spring pushes the pressure cap until it gradually extends and the pressure weakens, the top of the pressure rod on the pressure cap moves below the second vent. At this time, the high-pressure gas in the upper pressure chamber fills the sleeve, continuing to exert strong pressure on the pressure rod and pressure cap, thus compensating for the insufficient spring pressure and enabling the cam rotor pump to extract oil quickly and powerfully again.

[0022] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the internal structure of the intelligent oil injector according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the external structure of the intelligent oil injector according to an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of the intelligent oil injector according to another embodiment of the present invention. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0027] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are all conventional methods, and the reagents and materials described are all commercially available unless otherwise specified. In the description of this invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] like Figures 1-2 As shown, the present invention provides an intelligent oil injector, including an oil cup 1, an oil reservoir 2, and a housing 3. The oil reservoir 2 is disposed on the top of the housing 3, and the oil cup 1 covers the oil reservoir 2 and is detachably connected to the housing 3. A spring 4 and a pressure cap 5 are also disposed between the oil cup 1 and the oil reservoir 2. The invention also includes:

[0029] A cam rotor pump 6 is disposed inside the housing 3. The oil inlet of the cam rotor pump 6 faces upward and the oil outlet faces downward. A first through hole is provided at the top of the housing 3. The oil nozzle of the oil tank 2 passes through the first through hole and communicates with the oil inlet of the cam rotor pump 6. An oil outlet 7 is provided at the bottom of the housing 3. The oil outlet of the cam rotor pump 6 is communicated with the oil outlet 7 through an oil outlet pipe 8.

[0030] The motor 9 is disposed inside the housing 3 and located below the cam rotor pump 6. The output shaft of the motor 9 is connected to the input shaft of a gearbox 10, and the output shaft of the gearbox 10 is connected to the input shaft of the cam rotor pump 6.

[0031] The cam rotor pump 6 has a magnet on its input shaft and a magnetic field sensor 11 on its housing to measure the number of times the magnet passes through the magnetic field sensor 11 as the cam rotor pump 6 rotates, thereby determining the number of rotations of the input shaft of the cam rotor pump 6.

[0032] Specifically, the magnet can be set on the collar, which is fitted onto the input shaft of the cam rotor pump 6. The magnetic field sensor 11 generates a signal and counts when the magnet is closest. When the input shaft of the cam rotor pump 6 rotates once, the magnet approaches the magnetic field sensor 11 once, thereby triggering the magnetic field sensor 11 to count once. Therefore, when the cam rotor pump 6 is in use, the number of rotations can be measured by the magnetic field sensor 11.

[0033] In the above embodiments, by setting a magnet on the input shaft of the cam rotor pump 6 and setting a magnetic field sensor 11 on the housing of the cam rotor pump 6, the number of rotations of the input shaft of the cam rotor pump 6 can be accurately measured. Since the conveying volume of one rotation of the cam rotor pump 6 is fixed, the oil injection amount of the intelligent oiler can be accurately controlled by controlling the number of rotations of the input shaft of the cam rotor pump 6. At the same time, compared with the screw pump, the cam rotor pump 6 has higher efficiency, better self-priming ability, and virtually zero wear between the components of the cam rotor pump 6, resulting in a longer service life of the pump. It also does not produce wear particles that are introduced into the lubricating grease, thus ensuring good safety.

[0034] In another embodiment, the smart oil injector further includes:

[0035] The control system is communicatively connected to the magnetic field sensor 11 and the motor 9. The control system is used to obtain the single oil injection volume set by the user, calculate the number of rotations of the input shaft of the cam rotor pump 6 in a single operation based on the oil injection volume of the cam rotor pump 6 when the input shaft rotates one revolution, which is measured in advance, and the control system also uses the magnetic field sensor 11 to count the number of rotations of the input shaft of the cam rotor pump 6, thereby controlling the start and stop of the motor 9 in a single operation.

[0036] In the above embodiments, since the amount of oil injected by the cam rotor pump 6 is fixed when the input shaft of the cam rotor pump 6 rotates one revolution, the number of revolutions of the input shaft of the cam rotor pump 6 can be accurately controlled by the control system, magnet and magnetic field sensor 11, so that the cam rotor pump 6 outputs the single injection amount set by the user. Compared with manual oil injection, the oil injection amount in the above embodiments is more accurate.

[0037] In another embodiment, the control system is also used to acquire the total oil filling time of the oil tank 2 set by the user, calculate the total number of oil fillings of the oil tank 2 based on the pre-stored total oil volume of the oil tank 2 and the single oil filling volume set by the user, calculate the single oil filling time based on the time it takes for the input shaft of the cam rotor pump 6 to rotate one revolution and the number of revolutions of the input shaft of the cam rotor pump 6 in a single cycle, calculate the actual total time of the oil tank 2 based on the total number of oil fillings of the oil tank 2 and the single oil filling time, and finally calculate the oil filling interval length based on the total oil filling time of the oil tank 2 set by the user, the actual total time of the oil tank 2, and the total number of oil fillings of the oil tank 2, and control the motor 9 to operate at a timed interval according to the oil filling interval length.

[0038] In the above embodiments, since the total oil volume of oil tank 2, the oil injection volume of cam rotor pump 6 when the input shaft of cam rotor pump 6 rotates once, and the time taken for the input shaft of cam rotor pump 6 to rotate once are fixed, plus the single injection volume set by the user and the total injection time of oil tank 2, the injection interval can be accurately calculated, thereby realizing the timed and quantitative injection of oil into the oil-using equipment. Compared with manual injection, the above embodiments not only have more accurate oil injection volume, but also extremely precise control of injection time.

[0039] More specifically, the control system can also be used to record the number of times oil has been injected. Since the total number of times oil pack 2 has been injected has been calculated, it can also calculate and provide feedback to the user on the remaining number of times oil can be injected. Similarly, since the oil injection interval has also been calculated, it can also calculate and provide feedback to the user on the remaining number of days for oil injection, etc. In order to allow the user to receive the above feedback information as soon as possible, the control system can also be equipped with a wireless transmission module. Software that communicates with the control system can be installed on the user's fixed terminal or mobile terminal or other host computer to obtain the feedback information from the control system.

[0040] In another embodiment, the smart oil injector further includes:

[0041] A touch panel 12 is disposed on the outer wall of the housing 3. The touch panel 12 is connected to the control system and is used to acquire setting information input by the user. Through the touch panel 12, the user can easily input setting information to the control system, such as: single oil filling volume, total oil filling time of oil tank 2, etc.

[0042] In another embodiment, the smart oil injector further includes:

[0043] The battery pack 13 is disposed inside the housing 3 and located to the left of the cam rotor pump 6, and the battery pack 13 is electrically connected to the motor 9. Using the battery pack 13 to power the motor 9 eliminates the need for wiring harnesses and transformers, making it more convenient to use.

[0044] Specifically, the battery pack 13 can be a rechargeable lithium battery pack or a portable and replaceable dry battery pack. When the intelligent oiler is also equipped with a control system and a touch panel 12, the battery pack 13 is also connected to both of them to supply power.

[0045] like Figure 3 As shown, in another embodiment, a horizontal partition 14 is provided inside the oil cup 1 to divide the space inside the oil cup 1 into an upper pressure chamber and a lower pressure chamber. The spring 4 and the pressure cap 5 are provided in the lower pressure chamber. A first air hole 15 is provided on the side wall of the lower pressure chamber for communicating with the external air pressure.

[0046] The upper pressure chamber is a sealed chamber. A sleeve 16 is provided at the center of the upper pressure chamber. The lower end of the sleeve 16 is connected to the partition 14, and the upper end is connected to the inner bottom surface of the oil cup 1. A second air hole 17 is provided on the side wall of the sleeve 16. A second through hole is provided at the center of the partition 14. The second through hole is located within the inner hole of the sleeve 16 and the inner diameter of the second through hole is the same as the inner diameter of the sleeve 16. A pressure rod 18 is provided on the top of the pressure cap 5. The pressure rod 18 passes through the second through hole and extends into the sleeve 16. The pressure rod 18 is slidably sealed to the inner wall of the sleeve 16. Initially, the top of the pressure rod 18 is located above the second air hole 17.

[0047] The oil cup 1 has a first threaded hole at the bottom of the sleeve 16. A first one-way valve 19, which is threaded into the oil cup 1, is used to fill the upper pressure chamber outside the sleeve 16 with high-pressure gas. The oil cup 1 also has a second threaded hole at the bottom of the sleeve 16. A second one-way valve 20, which is threaded into the oil cup 1, is used to connect the oil cup 16 to the outside air pressure when the top of the pressure rod 18 is above the second air hole 17. When the top of the pressure rod 18 is above the second air hole 17, the pressure rod 18 moves down with the pressure cap 5, and the sleeve 16 is connected to the outside air pressure through the second one-way valve 20. When the top of the pressure rod 18 is below the second air hole 17, the sleeve 16 is connected to the upper pressure chamber outside the sleeve 16 to form a high-pressure chamber, and the second one-way valve 20 isolates the sleeve 16 from the outside air pressure.

[0048] When the oil in the oil tank 2 is sufficient, the spring 4 is compressed to a greater extent, so the spring 4 can provide sufficient pushing force to the pressure cap 5. When the cam rotor pump 6 draws out the lubricating oil, the oil is drawn out quickly and powerfully. However, when the grease in the oil tank 2 is used up, the spring 4 gradually extends, and the pushing force applied to the oil tank 2 gradually decreases. At this time, if only the spring 4 is used to press the pressure cap 5, the cam rotor pump 6 will draw oil relatively slowly. As the amount of oil in the oil tank 2 decreases, the pressure cap 5 gradually moves downwards, causing the pressure rod 18 at the top of the pressure cap 5 to also gradually move downwards. Because the second one-way valve 20 in the sleeve 16 is connected to the external air pressure, the movement of the pressure rod 18 is not hindered. When the spring 4 gradually extends and the pushing force applied to the oil tank 2 is insufficient, the top of the pressure rod 18 moves downwards to below the second air hole 17, allowing the high-pressure gas injected in the upper pressure chamber to rush into the sleeve 16. The air pressure in the sleeve 16 is greater than the external air pressure. The second one-way valve 20 isolates the sleeve 16 from the external air pressure, so the high-pressure gas will pressurize the top of the pressure rod 18. When the spring force of the oil injector 4 is insufficient, the high-pressure gas supplements the pressure on the pressure cap 5, and the cam rotor pump 6 pumps oil quickly and powerfully again.

[0049] In another embodiment, the second air hole 17 is located at one-third of the height of the sleeve 16 from bottom to top. When the top of the push rod is at this height, the pressure of the spring 4 is released by more than half. At this time, it is more appropriate to use the high pressure gas in the upper pressure chamber to supplement the pressure of the cover 5.

[0050] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. An intelligent oil injector, comprising an oil cup, an oil reservoir, and a housing, wherein the oil reservoir is disposed on the top of the housing, the oil cup covers the oil reservoir and is detachably connected to the housing, and a spring and a pressure cap are further disposed between the oil cup and the oil reservoir, characterized in that, Also includes: A cam rotor pump is disposed inside the housing, with the oil inlet of the cam rotor pump facing upward and the oil outlet facing downward. A first through hole is provided at the top of the housing, through which the oil nozzle of the oil tank passes and communicates with the oil inlet of the cam rotor pump. An oil outlet is provided at the bottom of the housing, and the oil outlet of the cam rotor pump is communicated with the oil outlet through an oil outlet pipe. An electric motor is disposed within the housing and located below the cam rotor pump. The output shaft of the electric motor is connected to a gearbox input shaft, and the gearbox output shaft is connected to the input shaft of the cam rotor pump. The cam rotor pump has a magnet installed on its input shaft and a magnetic field sensor installed on its housing to measure the number of times the magnet passes through the magnetic field sensor as the cam rotor pump's input shaft rotates, thereby determining the number of rotations of the cam rotor pump's input shaft. The control system is communicatively connected to the magnetic field sensor and the motor respectively. The control system is used to obtain the single oil injection volume set by the user, calculate the number of rotations of the cam rotor pump input shaft in a single operation based on the oil injection volume of the cam rotor pump when the input shaft rotates once in advance and the control system also uses the magnetic field sensor to count the number of rotations of the cam rotor pump input shaft, thereby controlling the start and stop of the motor in a single operation. The oil cup is provided with a horizontal partition to divide the space inside the oil cup into an upper pressure chamber and a lower pressure chamber. The spring and the pressure cap are provided in the lower pressure chamber. The side wall of the lower pressure chamber is provided with a first air hole for communicating with the external air pressure. The upper pressure chamber is a sealed chamber. A sleeve is provided at the center of the upper pressure chamber. The lower end of the sleeve is connected to the partition plate, and the upper end is connected to the inner bottom surface of the oil cup. A second air hole is provided on the side wall of the sleeve. A second through hole is provided at the center of the partition plate. The second through hole is located within the inner hole of the sleeve and the inner diameter of the second through hole is the same as the inner diameter of the sleeve. A pressure rod is provided on the top of the pressure cap. The pressure rod passes through the second through hole and extends into the sleeve. The pressure rod is slidably sealed to the inner wall of the sleeve. Initially, the top of the pressure rod is located above the second air hole. The oil cup has a first threaded hole at the bottom portion outside the sleeve, and a first one-way valve connected to the first threaded hole, which is used to fill the upper pressure chamber outside the sleeve with high-pressure gas. The oil cup also has a second threaded hole at the bottom portion inside the sleeve, and a second one-way valve connected to the second threaded hole, which is used to connect the pressure rod with the pressure cap when the top of the pressure rod is above the second air hole, so that the sleeve is connected to the external air pressure through the second one-way valve. When the top of the pressure rod is below the second air hole, a high-pressure chamber is formed because the sleeve is connected to the upper pressure chamber outside the sleeve, and the second one-way valve isolates the sleeve from the external air pressure.

2. The intelligent oil injector as described in claim 1, characterized in that, The control system is also used to acquire the total oil filling time set by the user, calculate the total number of oil fillings based on the pre-stored total oil volume and the user-set single filling volume, calculate the single filling time based on the time it takes for the cam rotor pump input shaft to rotate one revolution and the number of revolutions the cam rotor pump input shaft makes in a single cycle, calculate the actual total oil filling time based on the total number of oil fillings and the single filling time, and finally calculate the oil filling interval based on the user-set total oil filling time, the actual total oil filling time, and the total number of oil fillings, and control the motor to operate at a timed interval based on the oil filling interval.

3. The intelligent oil injector as described in claim 2, characterized in that, Also includes: A touch panel is disposed on the outer wall of the housing. The touch panel is connected to the control system and is used to acquire setting information input by the user.

4. The intelligent oil injector as described in claim 1, characterized in that, Also includes: A battery pack is disposed inside the housing and located to the left of the cam rotor pump, and the battery pack is electrically connected to the motor.

5. The intelligent oil injector as described in claim 1, characterized in that, The second vent is located at one-third of the height of the sleeve from the bottom to the top.

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