Screw pump and intelligent lubricating oil injection device

Abstract

The present invention discloses a screw pump for oil injection device, which includes: a reduction motor; a transmission shaft connected to the output shaft of the reduction motor; a pump body, which includes a bushing and a stator and a rotor arranged in the bushing, and the rotor is connected to the transmission shaft; wherein the reduction motor is provided with a transmission shaft sleeve coaxially with its output shaft, the bushing is coaxially connected to the transmission shaft sleeve, the transmission shaft is arranged in the transmission shaft sleeve, a magnet is arranged on the transmission shaft, and a magnetic field sensor is arranged on the transmission shaft sleeve to measure the number of times the magnet rotates with the transmission shaft and passes through the magnetic field sensor. The present invention also discloses an intelligent lubricating oil injection device using the above-mentioned screw pump. The present invention can accurately measure the number of revolutions of the rotor, and then accurately control the amount of oil injection of the screw pump by controlling the number of revolutions of the screw pump rotor.

Description

Technical Field

[0001] The present invention relates to the field of lubricating oil injection devices for mechanical equipment, and more specifically, to a screw pump and a lubricating oil intelligent injection device. Background Art

[0002] With the rapid development of automation and intelligence in my country's petrochemical industry, enterprises have put forward higher requirements for the safe, stable and continuous production of production equipment. Therefore, the daily maintenance of equipment has received more and more attention from enterprises. Lubrication is the first priority in equipment maintenance. The choice of lubrication method and the quality of lubrication effect will have a direct impact on the safety, stability and continuous production of the equipment.

[0003] The original equipment's lubricating oil injection was mainly based on manual operation, which basically relied on the workers' work experience. Therefore, the injection of lubricating oil may be too much or too little, both of which will have a negative impact on the equipment. Therefore, an oil injector has been developed in the prior art to inject oil into the equipment. However, the oil pump used in the existing oil injector still cannot achieve regular and quantitative oil injection for the equipment. Summary of the invention

[0004] An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

[0005] Another object of the present invention is to provide a screw pump for an oil injection device, which can accurately measure the number of revolutions of the rotor. Since the delivery volume of the stator and rotor in the screw pump is determined, the oil injection amount of the screw pump can be accurately controlled by controlling the number of revolutions of the screw pump rotor.

[0006] In order to achieve these purposes and other advantages according to the present invention, a screw pump for an oil injection device is provided, comprising:

[0007] Gear motor;

[0008] A transmission shaft connected to the output shaft of the reduction motor;

[0009] A pump body, comprising a bushing and a stator and a rotor disposed in the bushing, wherein the rotor is connected to the transmission shaft;

[0010] Among them, a transmission shaft sleeve is arranged on the reduction motor coaxially with its output shaft, the bushing is coaxially connected to the transmission shaft sleeve, the transmission shaft is arranged in the transmission shaft sleeve, a magnet is arranged on the transmission shaft, and a magnetic field sensor is arranged on the transmission shaft sleeve to measure the number of times the magnet passes through the magnetic field sensor as the transmission shaft rotates.

[0011] Preferably, the transmission shaft is connected to the rotor via a cross shaft.

[0012] Preferably, the reduction motor comprises a reducer and a motor connected to the reducer, and the reducer output shaft and the motor are arranged in parallel on the same side of the reducer.

[0013] Another object of the present invention is to provide an intelligent lubricating oil injection device, which can inject lubricating oil in a quantitative manner according to user needs, and can also inject lubricating oil at a scheduled time according to user needs.

[0014] In order to achieve these purposes and other advantages according to the present invention, a lubricating oil intelligent oil injection device is provided, comprising: an oil bag and the above-mentioned screw pump, and the lubricating oil intelligent oil injection device also includes:

[0015] The control system is used to obtain the single oil injection amount, calculate the number of rotations of the single oil injection transmission shaft according to the oil absorption amount of the screw pump per one rotation of the transmission shaft measured in advance, and control the single action of the reduction motor according to the number of rotations of the single oil injection transmission shaft.

[0016] Preferably, the control system is also used to obtain the total time taken to fill the oil bag with oil, calculate the total number of times the oil bag is filled with oil according to the preset total oil volume and the single oil filling volume, and then calculate the single oil filling time according to the time taken for the transmission shaft to rotate one circle and the number of rotations of the transmission shaft during a single oil filling measured in advance, and then calculate the actual total time taken to fill the oil bag according to the total number of times the oil bag is filled with oil and the single oil filling time, and finally calculate the oil filling interval duration according to the total oil filling time, the actual total time taken to fill the oil bag and the total number of times the oil bag is filled with oil, and control the timing action of the reduction motor according to the oil filling interval duration.

[0017] Preferably, one end of the stator and the rotor in the screw pump away from the transmission shaft is the inlet of the screw pump, and the oil bag outlet is connected to the inlet of the screw pump.

[0018] Preferably, the intelligent lubricating oil injection device further comprises:

[0019] The housing has an open top, and the screw pump is arranged in the housing.

[0020] An oil bag seat is covered on the top of the outer shell, the oil bag is arranged on the outer top surface of the oil bag seat, a first through hole is opened on the oil bag seat to connect the oil bag outlet with the screw pump inlet, a second through hole is opened at the lower end of the outer shell, an oil outlet nozzle is coaxially connected to the outside of the second through hole, a screw pump outlet is arranged on the sleeve wall of the bushing in the screw pump near the transmission shaft, and the screw pump outlet is connected with the oil outlet nozzle through an oil outlet pipe.

[0021] Preferably, the intelligent lubricating oil injection device further comprises: an oil cup, a first spring and a pressure cover, the oil cup cover is arranged outside the oil bag and is clamped with the housing, the first spring and the pressure cover are both arranged in the oil cup, the pressure cover is arranged on the top of the oil bag, and the first spring is compressed and arranged between the oil cup and the first pressure cover;

[0022] The top of the oil sac is concave to form a sac body which is folded and retracted in the axial direction of the oil sac and is coaxial with the oil sac. When the sac body is fully extended, the axial length of the sac body is not less than the axial length of the oil sac body when the oil sac is fully contracted. A first pressure plate is arranged inside the sac body.

[0023] The center of the oil cup bottom and the center of the pressure cover are both provided with a rod hole for passing the rod body, and the rod body is used to press the first pressure plate when the oil bag is fully contracted to squeeze out the remaining lubricating grease in the oil bag.

[0024] Preferably, the gland includes a circular groove and a second pressing plate covering the notch of the circular groove, and the second pressing plate presses against the top of the oil bag;

[0025] The rod-penetrating hole arranged at the center of the gland includes a first rod-penetrating hole arranged at the center of the bottom of the circular groove and a second rod-penetrating hole arranged at the center of the second pressing plate, and the diameter of the first rod-penetrating hole is smaller than the diameter of the second rod-penetrating hole;

[0026] The rod body is connected to the first pressing plate after passing through the first rod-penetrating hole and the second rod-penetrating hole, a disc is provided on the rod body so as to just pass through the second rod-penetrating hole, a bayonet is provided on the edge of the second through hole, a block is provided on the edge of the disc so as to just pass through the bayonet, and a second spring surrounding the rod body is also provided on the disc;

[0027] In the initial state, the sac is folded and contracted, the disc is located above the second pressure plate, the block is misaligned with the bayonet, the second spring is in a compressed state, the upper end is pressed against the inner bottom surface of the circular groove, the lower end is pressed against the disc, and the upper end of the rod body is not lower than the outer top surface of the bottom of the oil cup.

[0028] Preferably, the rod penetration hole provided at the center of the bottom of the oil cup is the third rod penetration hole;

[0029] The rod body is a telescopic rod, and the fixed part and the movable part of the telescopic rod rotate synchronously;

[0030] A circular cover plate is coaxially arranged outside the third rod penetration hole, the diameter of the circular cover plate is larger than the third rod penetration hole, the fixed part of the telescopic rod is connected to the circular cover plate, the movable part of the telescopic rod is connected to the first pressure plate, and the disc is connected to the movable part of the telescopic rod.

[0031] The present invention has at least the following beneficial effects:

[0032] 1. The screw pump can accurately measure the number of revolutions of the rotor. Since the delivery volume of the screw pump is determined by one revolution of the rotor, the oil injection amount of the screw pump can be accurately controlled by controlling the number of revolutions of the screw pump rotor.

[0033] 2. The reduction motor is directly connected to the pump body through the rotating shaft, and the transmission shaft drives the rotor to rotate through the cross shaft. This structure not only enables the rotor to rotate and swing, but also avoids the occurrence of shaft derailment. At the same time, it also avoids the problems of many wearing parts and complicated installation caused by the use of turbines and belt drives in existing reduction motors.

[0034] 3. Since the capacity of the oil bag in the oil filling device is fixed, the equipment can be oiled regularly and quantitatively according to the single oil filling amount and the total time for oil bag oil filling set by the user.

[0035] 4. The oil bag is directly connected to the screw pump, and the lubricating oil enters the screw pump more directly, avoiding the resistance caused by the oil inlet pipe used in the existing oiler (the increase of the oil inlet pipe will increase the flow resistance of the grease), and greatly enhancing the oiling ability under low and ultra-low temperature.

[0036] 5. The pump body and motor of the screw pump are arranged in parallel on the same side of the reducer. In addition, the screw pump is directly connected to the oil bag, so that the components in the oil injection device are arranged reasonably, the occupied space is reduced, and the overall volume of the oil injection device is reduced, so it can be applied to more scenarios with limited use space.

[0037] 6. Since the oil bladder is a foldable and retractable bladder body, even if it is folded and contracted to its shortest state, the oil bladder still has a certain accumulated height, so that there is still a lot of lubricating oil in the cavity in the center part of the oil bladder that does not fold. The present application uses a rod body to press the first pressure plate, so that when the oil bladder is folded to its shortest state, the bladder body stretches and squeezes out the cavity in the center part of the oil bladder that does not fold, thereby achieving the effect of draining the lubricating oil in the oil bladder as much as possible and avoiding residual waste of lubricating oil.

[0038] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 The side structural diagram of the screw pump of the present invention is

[0040] Figure 2 This is a schematic diagram of the side structure of the intelligent lubricating oil injection device according to one embodiment of the present invention;

[0041] Figure 3 This is a schematic diagram of the external structure of the intelligent lubricating oil injection device according to an embodiment of the present invention.

[0042] Figure 4 A schematic side structural diagram of an initial state of a lubricating oil intelligent oil injection device according to another embodiment of the present invention;

[0043] Figure 5It is a schematic diagram of the side structure of the intelligent lubricating oil injection device according to another embodiment of the present invention when squeezing the remaining lubricating oil in the oil bag;

[0044] Figure 6 It is a schematic diagram of the top view of the structure of the second pressing plate, the disc and the telescopic rod of the present invention. DETAILED DESCRIPTION

[0045] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0046] It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0047] like Figure 1 As shown, the present invention provides a screw pump for an oil injection device, comprising:

[0048] Reduction motor 1;

[0049] A transmission shaft 2 connected to the output shaft of the reduction motor 1;

[0050] A pump body 3, comprising a bushing 301 and a stator 302 and a rotor 303 disposed in the bushing 301, wherein the rotor 303 is connected to the transmission shaft 2;

[0051] Among them, a transmission shaft sleeve 4 is arranged coaxially on the reduction motor 1 and its output shaft, the bushing 301 is coaxially connected to the transmission shaft sleeve 4, the transmission shaft 2 is arranged in the transmission shaft sleeve 4, a magnet is arranged on the transmission shaft 2, and a magnetic field sensor 6 is arranged on the transmission shaft sleeve 4 for measuring the number of times the magnet passes through the magnetic field sensor 6 as the transmission shaft 2 rotates.

[0052] Specifically, the magnet is arranged on the collar 5, and the collar 5 is sleeved on the transmission shaft 2. The magnetic field sensor 6 generates a signal and counts when the magnet is closest. When the transmission shaft 2 rotates one circle, the magnet approaches the magnetic field sensor 6 once, thereby triggering the magnetic field sensor 6 to count once. The transmission shaft 2 is connected to the screw pump rotor 303, so when the screw pump is in use, the number of revolutions of the rotor 303 can be measured by the magnetic field sensor 6.

[0053] In the above embodiment, since the screw pump can accurately measure the number of revolutions of the rotor 303 and the delivery volume of the screw pump rotor 303 is determined by one revolution, the oil injection amount of the screw pump can be accurately controlled by controlling the number of revolutions of the screw pump rotor 303.

[0054] In another embodiment, the transmission shaft 2 is connected to the rotor 303 via a cross shaft 7, and the transmission shaft 2 drives the rotor 303 to rotate via the cross shaft 7. This structure not only enables the rotor to rotate and swing, but also avoids the occurrence of shaft derailment. At the same time, it also avoids the problems of many wearing parts and complicated installation caused by the use of turbines and belt drives in the existing reduction motor 1.

[0055] In another embodiment, the reduction motor 1 includes a reducer 102 and a motor 101 connected to the reducer 102, and the output shaft of the reducer 102 and the motor 101 are arranged in parallel on the same side of the reducer 102. Since the output shaft of the reduction motor 1 (i.e., the output shaft of the reducer 102) is connected to the transmission shaft 2 and the pump body 3 in sequence, this structure also enables the pump body 3 and the motor 101 to be arranged in parallel on the same side of the reducer 102, and the arrangement of various components is more compact, so that the oil injection device using this screw pump can reduce a certain volume, and can be applied to more scenarios with limited use space.

[0056] like Figures 2-3 As shown, the present invention also provides a lubricating oil intelligent oil injection device, comprising: an oil bag 8 and the screw pump in the above embodiment, and the lubricating oil intelligent oil injection device also includes:

[0057] Control systems;

[0058] Specifically, the control system may include a CPU and a touch panel 9 , wherein the touch panel 9 is used to allow the user to input various required settings, and the CPU obtains the various required settings input by the user from the touch panel 9 , and then controls the action of the reduction motor 1 according to a built-in program.

[0059] For example, in one embodiment, the user inputs the single oil injection amount from the touch panel 9, the CPU obtains the single oil injection amount, calculates the number of rotations of the single oil injection transmission shaft according to the oil suction amount of the screw pump per one rotation of the transmission shaft measured in advance, and controls the single action of the reduction motor 1 according to the number of rotations of the single oil injection transmission shaft.

[0060] For example, in another embodiment, the user not only inputs the single oil filling amount but also inputs the total time taken for oil filling of the oil bag from the touch panel 9. The CPU obtains the single oil filling amount and the total time taken for oil filling of the oil bag, calculates the total number of oil fillings of the oil bag according to the preset total oil amount and the single oil filling amount, and then calculates the single oil filling time according to the time taken for the transmission shaft to rotate one circle and the number of rotations of the transmission shaft after a single oil filling measured in advance, and then calculates the actual total time taken for the oil bag according to the total number of oil fillings and the single oil filling time, and finally calculates the oil filling interval time according to the total oil filling time, the actual total time taken for the oil bag and the total number of oil fillings of the oil bag ((total time taken for oil filling of the oil bag - actual total time taken for the oil bag) / (total number of oil fillings of the oil bag - 1)), and controls the timing action of the reduction motor 1 according to the oil filling interval time.

[0061] In the above embodiment, since the capacity of the oil bag 8 in the oil filling device is determined, the delivery volume of the screw pump rotor 303 during one rotation is determined, and the time taken for the screw pump rotor 303 to rotate one circle is also determined, the equipment can be oiled in a timely and quantitative manner according to the single oil filling amount set by the user and the total time taken for the oil bag to be oiled.

[0062] More specifically, the control system can also be used to record the number of times the oil has been filled. Since the total number of times the oil bag has been filled has been calculated before, the remaining number of oil fillings can also be calculated and fed back to the user. Similarly, since the oil filling interval has also been calculated, the remaining number of oil filling days can also be calculated and fed back to the user. In order to allow the user to know the above feedback information as soon as possible, a wireless transmission module can also be set in the control system, and software that communicates with the control system can be set on the user's fixed terminal or mobile terminal host computer to obtain feedback information from the control system.

[0063] like Figures 4 to 6 As shown, in another embodiment, the end of the stator 302 and the rotor 303 in the screw pump away from the transmission shaft 2 is the inlet of the screw pump, and the outlet of the oil bag 8 is connected to the inlet of the screw pump. The oil bag 8 is directly connected to the screw pump, and the lubricating oil enters the screw pump more directly, avoiding the resistance caused by the use of the oil inlet pipe in the existing oiler (the increase of the oil inlet pipeline will increase the flow resistance of the grease), and greatly enhancing the oiling ability under low and ultra-low temperature.

[0064] In another embodiment, the intelligent lubricating oil injection device further comprises:

[0065] The housing 10 has an open top, and the screw pump is disposed in the housing 10.

[0066] The oil bag seat 11 is covered on the top of the outer shell 10, and the oil bag 8 is arranged on the outer top surface of the oil bag seat 11. The oil bag seat 11 is provided with a first through hole to connect the outlet of the oil bag 8 with the inlet of the screw pump. The lower end of the outer shell 10 is provided with a second through hole, and the outside of the second through hole is coaxially connected with an oil outlet nozzle 25. The bushing 301 in the screw pump is provided with a screw pump outlet near the sleeve wall of the transmission shaft 2, and the screw pump outlet is connected with the oil outlet nozzle 25 through an oil outlet pipe 26.

[0067] In the above embodiment, the pump body 3 of the screw pump and the motor 101 are arranged in parallel on the same side of the reducer 102, and the screw pump is directly connected to the oil bag 8, so that the components in the oil injection device are reasonably arranged, the occupied space is reduced, and the overall volume of the oil injection device is reduced, so that it can be applied to more scenarios with limited use space.

[0068] In another embodiment, the intelligent lubricating oil injection device further includes: an oil cup 12, a first spring 13 and a pressure cover 14, the oil cup 12 is disposed outside the oil bag 8 and is clamped with the housing 10, the first spring 13 and the pressure cover 14 are both disposed in the oil cup 12, the pressure cover 14 is disposed on the top of the oil bag 8, and the first spring 13 is compressed and disposed between the oil cup 12 and the first pressure cover 14;

[0069] The top of the oil bladder 8 is concave to form a sac 15 which is folded and retracted in the axial direction of the oil bladder 8 and is coaxial with the oil bladder 8. When the sac 15 is fully extended, the axial length of the sac 15 is not less than the axial length of the oil bladder 8 when the oil bladder 8 is fully contracted. A first pressing plate 16 is arranged in the sac 15.

[0070] The center of the bottom of the oil cup 12 and the center of the pressure cover 14 are both provided with a rod hole for passing a rod body. The rod body is used to press the first pressure plate 16 when the oil bag 8 is fully contracted to squeeze out the remaining lubricating grease in the oil bag 8.

[0071] During use of the above embodiment, when the oil bladder 8 is compressed to its shortest, a rod is used to pass through the rod hole at the center of the bottom of the oil cup 12 and the center of the pressure cover 14 to press against the first pressure plate 16, so that the bladder 15 stretches to squeeze out the lubricating oil still remaining in the cavity in the center part of the oil bladder 8 where no folding occurs, thereby achieving the effect of draining the lubricating oil in the oil bladder 8 as much as possible and avoiding residual waste of the lubricating oil.

[0072] However, in the above embodiment, when the intelligent lubricating oil injection device is used, the rod has to be manually pressed against the first pressure plate 16, which is inconvenient to use. Therefore, this problem is further improved in the following embodiments.

[0073] In another embodiment, the gland 14 includes a circular groove 1401 and a second pressing plate 1402 covering the notch of the circular groove 1401, and the second pressing plate 1402 presses against the top of the oil bag 8;

[0074] The rod-penetrating hole arranged at the center of the gland 14 includes a first rod-penetrating hole arranged at the center of the bottom of the circular groove 1401 and a second rod-penetrating hole arranged at the center of the second pressing plate 1402, and the diameter of the first rod-penetrating hole is smaller than the diameter of the second rod-penetrating hole;

[0075] The rod body is connected to the first pressing plate 16 after passing through the first rod-penetrating hole and the second rod-penetrating hole. A disc 17 is also provided on the rod body so as to just pass through the second rod-penetrating hole. A bayonet is provided on the edge of the second through hole. A block 18 is provided on the edge of the disc 17 so as to just pass through the bayonet. A second spring 19 surrounding the rod body is also provided on the disc 17.

[0076] In the initial state, the capsule 15 is folded and contracted, the disc 17 is located above the second pressure plate 1402, the block 18 is misaligned with the bayonet, the second spring 19 is in a compressed state, the upper end is pressed against the inner bottom surface of the circular groove 1401, the lower end is pressed against the disc 17, and the upper end of the rod body is not lower than the outer top surface of the bottom of the oil cup 12.

[0077] During use of the above embodiment, when the oil bag 8 is compressed to the shortest, the staff rotates the rod body to align the block 18 with the bayonet. Under the elastic force of the second spring 19, the disc 17 can move downward through the second rod hole, thereby driving the rod body to move downward. The first pressure plate 16 at the lower end of the rod body can apply pressure to the bag body 15, thereby assisting the screw pump to suck out the lubricating oil in the cavity in the central part of the oil bag 8 where no folding occurs.

[0078] The above embodiment overcomes the defect that it is inconvenient to use the rod manually to press the first pressure plate 16. In order to make it more convenient for the staff to operate, the rod needs to be set to a certain length. Generally, the length of the rod is not less than the height of the oil cup 12. In this way, the upper end of the rod will not sink into the oil cup 12, which is convenient for the staff to hold. However, when the oil bag 8 is full of oil, the length of the upper end of the rod extending out of the oil cup 12 is too long, which is not only unsightly but also takes up space. If some scenarios have restrictions on the use space of the oil filling device, the above-mentioned intelligent lubricating oil filling device is difficult to use. Therefore, this problem is further improved in the following embodiments.

[0079] In another embodiment, the rod penetration hole provided at the center of the bottom of the oil cup 12 is the third rod penetration hole;

[0080] The rod body is a telescopic rod 20, and the fixed part and the movable part of the telescopic rod 20 rotate synchronously;

[0081] A circular cover plate 21 is coaxially arranged outside the third rod penetration hole, and the diameter of the circular cover plate 21 is larger than that of the third rod penetration hole. The fixed part of the telescopic rod 20 is connected to the circular cover plate 21, the movable part of the telescopic rod 20 is connected to the first pressing plate 16, and the disc 17 is connected to the movable part of the telescopic rod 20.

[0082] During use of the above embodiment, since the rod body is a telescopic rod 20, the rod body can be gradually extended as the oil bag 8 gradually contracts. At the same time, since the fixed part and the movable part of the telescopic rod 20 rotate synchronously, the staff only needs to rotate the circular cover plate 21 to drive the telescopic rod 20 to rotate, thereby completing the operation of aligning the clamping block 18 with the clamping port.

[0083] The above embodiment uses the telescopic rod 20 so that the rod body can be completely hidden in the oil cup 12, which is not only beautiful and does not take up space, but also makes the above intelligent lubricating oil injection device suitable for use in small spaces.

[0084] Specifically, the circumferential surface of the circular cover plate 21 is provided with anti-slip teeth or the top surface of the circular cover plate 21 is provided with a knob 22 , which makes it convenient for the staff to hold the circular cover plate 21 .

[0085] Specifically, the telescopic rod 20 includes a first circular sleeve 2001 and a second circular sleeve 2002 coaxially slidably connected to the first circular sleeve 2001, the first circular sleeve 2001 is provided with a first groove along the length direction, the second circular sleeve 2002 is provided with a second groove along the length direction, and the convex surface of the first groove is tightly attached to the concave surface of the second groove.

[0086] The round sleeve is used in the above embodiment mainly because the round sleeve is more convenient to cooperate with the rod penetration hole on the bottom of the oil cup 12 and the pressure cover 14. In fact, the telescopic rod 20 can also adopt two square sleeves or two sleeves with other polygonal cross-sections. However, in this case, the rod penetration holes on the bottom of the oil cup 12 and the pressure cover 14 need to be larger to accommodate the rotation of the square sleeve or the sleeve with other polygonal cross-sections, which makes it difficult for the sleeve to cooperate well with the rod penetration hole.

[0087] More specifically, a reference line is engraved on the edge of the third rod hole on the outside of the bottom of the oil cup 12. When the knob 22 is aligned with the reference line, the block 18 is aligned with the bayonet. Since the disk 17 and the block 18 are both in the pressure cover 14 in the initial state and cannot be observed, the staff rotates the knob 22 to align the block 18 with the bayonet by feel, which is inconvenient for the staff to use. After the reference line is set in this embodiment, the staff only needs to turn the knob 22 to align with the reference line, which is easier to operate.

[0088] More specifically, a limiting groove 23 is axially provided on the inner wall of the oil cup 12, and a limiting rod 24 is horizontally provided on the edge of the first pressure plate 16, which extends into the limiting groove 23. Since there is friction between the block 18 and the second pressure plate 1402, when the staff rotates the rod body, it is possible that the block 18 drives the pressure cover 14 to rotate synchronously due to friction, resulting in the block 18 being unable to align with the slot on the second pressure plate 1402. Therefore, in this embodiment, the pressure cover 14 is limited so that it can only move up and down along the limiting groove 23 but cannot rotate, thereby ensuring that the operation of the rotating rod body is effective and reliable.

[0089] More specifically, an air pressure balance hole is provided on the oil cup 12. Since the oil cup 12 is almost sealed, the discharge of lubricating oil in the oil bag 8 and the contraction of the oil bag 8 will cause negative pressure to be generated in the oil cup 12, which is not conducive to the operation of the screw pump. Therefore, this embodiment solves this problem by providing an air pressure balance hole in the oil cup 12 to balance the air pressure inside and outside the oil cup 12.

[0090] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. Lubricating oil intelligent oil filling device, characterized in that: include: An oil bladder and a screw pump, wherein the screw pump comprises: Gear motor; A transmission shaft connected to the output shaft of the reduction motor; A pump body, comprising a bushing and a stator and a rotor disposed in the bushing, wherein the rotor is connected to the transmission shaft; Wherein, a transmission shaft sleeve is provided on the reduction motor coaxially with its output shaft, the bushing is coaxially connected with the transmission shaft sleeve, the transmission shaft is provided in the transmission shaft sleeve, a magnet is provided on the transmission shaft, and a magnetic field sensor is provided on the transmission shaft sleeve to measure the number of times the magnet passes through the magnetic field sensor as the transmission shaft rotates; The lubricating oil intelligent oil injection device also includes: A control system is used to obtain a single oil injection amount, calculate the number of rotations of the single oil injection transmission shaft according to the oil absorption amount of the screw pump when the transmission shaft rotates one circle measured in advance, and control a single action of the reduction motor according to the number of rotations of the single oil injection transmission shaft; The control system is also used to obtain the total time taken to fill the oil bag with oil, calculate the total number of times the oil bag is filled with oil according to the preset total oil volume of the oil bag and the single oil volume, and then calculate the single oil filling time according to the time taken for the transmission shaft to rotate one circle and the number of rotations of the transmission shaft during a single oil filling measured in advance, and then calculate the actual total time taken to fill the oil bag according to the total number of times the oil bag is filled with oil and the single oil filling time, and finally calculate the oil filling interval time according to the total time taken to fill the oil bag with oil, the actual total time taken to fill the oil bag and the total number of times the oil bag is filled with oil, and control the timing action of the reduction motor according to the oil filling interval time; A housing with an open top, wherein the screw pump is disposed in the housing; An oil bladder seat, which is covered and arranged on the top of the housing, the oil bladder is arranged on the outer top surface of the oil bladder seat, a first through hole is opened on the oil bladder seat to connect the oil bladder outlet with the screw pump inlet, a second through hole is opened at the lower end of the housing, an oil outlet nozzle is coaxially connected to the second through hole, a sleeve wall of the bushing in the screw pump is provided with a screw pump outlet near the transmission shaft, and the screw pump outlet is connected with the oil outlet nozzle through an oil outlet pipe; An oil cup, a first spring and a pressure cover, wherein the oil cup cover is arranged outside the oil bag and is clamped with the housing, the first spring and the pressure cover are both arranged in the oil cup, the pressure cover is arranged on the top of the oil bag, and the first spring is compressed and arranged between the oil cup and the first pressure cover; The top of the oil sac is concave to form a sac body which is folded and retracted in the axial direction of the oil sac and is coaxial with the oil sac. When the sac body is fully extended, the axial length of the sac body is not less than the axial length of the oil sac body when the oil sac is fully contracted. A first pressure plate is arranged inside the sac body. The center of the oil cup bottom and the center of the gland are both provided with a rod hole for passing the rod body, and the rod body is used to press the first pressing plate when the oil bag is fully contracted to squeeze out the remaining lubricating grease in the oil bag; The gland includes a circular groove and a second pressing plate covering the notch of the circular groove, and the second pressing plate presses against the top of the oil bag; The rod-penetrating hole arranged at the center of the gland includes a first rod-penetrating hole arranged at the center of the bottom of the circular groove and a second rod-penetrating hole arranged at the center of the second pressing plate, and the diameter of the first rod-penetrating hole is smaller than the diameter of the second rod-penetrating hole; The rod body is connected to the first pressing plate after passing through the first rod-penetrating hole and the second rod-penetrating hole, a disc is provided on the rod body so as to just pass through the second rod-penetrating hole, a bayonet is provided on the edge of the second through hole, a block is provided on the edge of the disc so as to just pass through the bayonet, and a second spring surrounding the rod body is also provided on the disc; In the initial state, the capsule is folded and contracted, the disc is located above the second pressure plate, the block is misaligned with the bayonet, the second spring is in a compressed state, the upper end is pressed against the inner bottom surface of the circular groove, the lower end is pressed against the disc, and the upper end of the rod body is not lower than the outer top surface of the bottom of the oil cup; The rod penetration hole arranged at the center of the bottom of the oil cup is the third rod penetration hole; The rod body is a telescopic rod, and the fixed part and the movable part of the telescopic rod rotate synchronously; A circular cover plate is coaxially arranged outside the third rod penetration hole, the diameter of the circular cover plate is larger than the third rod penetration hole, the fixed part of the telescopic rod is connected to the circular cover plate, the movable part of the telescopic rod is connected to the first pressure plate, and the disc is connected to the movable part of the telescopic rod.

2. The intelligent lubricating oil injection device according to claim 1, characterized in that: The transmission shaft is connected to the rotor via a cross shaft.

3. The intelligent lubricating oil injection device according to claim 1, characterized in that: The reduction motor comprises a reducer and a motor connected to the reducer, and the reducer output shaft and the motor are arranged in parallel on the same side of the reducer.

4. The intelligent lubricating oil injection device according to claim 1, characterized in that: One end of the stator and the rotor in the screw pump away from the transmission shaft is the inlet of the screw pump, and the oil bag outlet is connected to the inlet of the screw pump.

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