CN110259766B

CN110259766B - Integrated high-pressure oil injection and vacuum pumping equipment

Info

Publication number: CN110259766B
Application number: CN201910549458.5A
Authority: CN
Inventors: 李银
Original assignee: Beijing Bojian Transmission Technology Co ltd
Current assignee: Shaanxi Ruichuang Electronic Technology Co ltd
Priority date: 2019-06-24
Filing date: 2019-06-24
Publication date: 2020-10-02
Anticipated expiration: 2039-06-24
Also published as: CN110259766A

Abstract

The invention provides an integrated high-pressure oil injection and vacuum pumping device, which comprises an oil tank for storing oil, an oil pumping pipeline and an oil return pipeline which are respectively connected with the oil tank and external equipment to be supplied with oil, an electric pump which is connected with the oil pumping pipeline and provides oil injection power, and a vacuum pump which is used for vacuumizing the equipment to be supplied with oil, wherein a filter for filtering the oil is arranged on the oil return pipeline, the oil tank comprises a base, a hollow transparent barrel body with one end hermetically arranged on the base, a sealing upper cover is arranged at an opening at the other end of the barrel body, and a transparent observation barrel which can accommodate preset oil inlet amount is arranged at an inlet of the oil return pipeline in the oil tank. According to the oil level monitoring device, the transparent barrel body and the transparent observation barrel which is arranged independently are adopted, the oil quality and the oil amount change in the barrel body are directly observed from the outside, meanwhile, the observation barrel is utilized to prevent return oil from directly entering the barrel body, and the oil in the whole barrel body is prevented from being polluted by the return oil which does not reach the standard after filtration.

Description

Integrated high-pressure oil injection and vacuum pumping equipment

Technical Field

The invention relates to the field of high-pressure oil injection, filtration and vacuum pumping of equipment, in particular to an integrated high-pressure oil injection and vacuum pumping device which realizes vacuum pumping and high-pressure oil injection of hydraulic equipment and instrument equipment and can filter oil in the equipment in the process of high-pressure oil injection.

Background

In the prior art, an oil filling vehicle performs oil filling operation on designated equipment through a motor and a vacuum pump, for example, hydraulic oil of hydraulic equipment is supplemented, and before oil filling, the vacuum pump is used for performing vacuum pumping operation on the equipment. In addition, some oil injection vehicles are used for pumping out residual oil in the equipment for filtering and then recharging the residual oil into the equipment.

The existing oil injection vehicle has single function, or can only realize vacuumizing and oil injection, or can only realize filtering effect, and does not have an oil injection vehicle with three functions. In addition, the tank body of the oiling vehicle for storing oil is generally made of stainless steel materials, the internal oil storage capacity and the external quality of the oil cannot be known, the filtered oil discharged from the inside of the equipment is directly discharged into the tank body, and once the oil filtering effect does not meet the requirement, the clean oil in the tank body can be simultaneously polluted.

The filter on the existing oil injection vehicle is usually installed in a stainless steel cover in a fixed mode, so that the filtering effect of oil cannot be directly observed from the outside, and the filter is very complicated to disassemble and assemble during maintenance or replacement. In addition, the motor for pumping oil is also arranged in the tank body, so that not only is an additional sealing structure required to be added, but also the oil quality is influenced.

Disclosure of Invention

The invention aims to provide an integrated high-pressure oil injection and vacuum pumping device which realizes vacuum pumping and high-pressure hydraulic oil injection of equipment to be oiled and filters oil in the equipment in the oil injection process.

The oil tank comprises a base, a hollow transparent barrel body, a sealing upper cover, a transparent observation barrel and an oil filter, wherein the hollow transparent barrel body is hermetically arranged on the base through one end, the sealing upper cover is arranged at an opening at the other end of the barrel body, the transparent observation barrel is arranged at an inlet of the oil return pipeline in the oil tank and used for accommodating preset oil inlet amount, and the oil filter is arranged on the oil return pipeline.

In one embodiment of the present invention, an overflow pipeline is connected to the oil pumping pipeline, one end of the overflow pipeline is connected to the oil pumping pipeline, the other end of the overflow pipeline is connected to the oil tank, an overflow valve is installed on the overflow pipeline, and an overflow pipe is vertically installed at an outlet of the overflow pipeline in the oil tank.

In one embodiment of the present invention, the upper cover includes an inner cover sealingly fitted into the opening at the upper end of the tub, and a press cover for fixing the inner cover at a current position, the inner cover includes an inner ring inserted into the opening end of the tub, and an outer ring in contact with the end of the opening end of the tub, an elastic ring gasket is installed between the outer ring and the end of the opening end of the tub, the area of the press cover is larger than that of the inner cover, and a fixing rod connected to the base is installed at the periphery of the press cover.

In one embodiment of the present invention, a through-threaded hole is provided in a position of the inner lid corresponding to the annular gasket, and a non-tail bolt is screwed into the through-threaded hole.

In an embodiment of the invention, an annular fixed cavity with an open end is installed at the center of the circle of the base, a connector penetrating through the base and connected with the oil return pipeline is arranged on the outer side of the bottom of the annular fixed cavity, a fixing piece for fixing the annular fixed cavity in the base is screwed on one penetrating end of the connector, and the observation barrel is hermetically inserted into the open end of the annular fixed cavity through one end.

In one embodiment of the present invention, an oil discharge pipeline communicating with the inside of the observation tub is provided in the base, and a screw-type sealing plug is attached to the oil discharge pipeline.

In an embodiment of the present invention, the oil passages of the oil pumping pipeline, the oil return pipeline and the overflow pipeline are respectively formed by movable connectors, each movable connector includes a through pipe, a steering joint and a detachable joint, the through pipe is a hollow pipe with two open ends, the steering joint is provided with a jack for one end of the through pipe to be hermetically inserted and connected, and a connecting pipe communicated with the jack and perpendicular to the jack, the detachable joint is provided with a through jack for one end of the through pipe to be hermetically inserted and connected, and a connecting pipe communicated with the through jack and perpendicular to the through jack, and one end of the through jack is provided with a sealing plug for movably sealing the through jack.

In one embodiment of the invention, the filter comprises an oil inlet joint for connecting external equipment, a grooved oil receiving cylinder for fixing the oil inlet joint at a mounting point, a filter cover sleeved on the oil inlet joint is installed in the grooved oil receiving cylinder, the oil return pipeline is communicated with the bottom of the grooved oil receiving cylinder, and a transparent pipe is hermetically sleeved outside the grooved oil receiving cylinder; the body of the grooved oil receiving cylinder is provided with an observation window for directly observing the filter cover, and the bottom of the grooved oil receiving cylinder is provided with a limiting piece for limiting the transparent pipe to the current sleeving position.

In one embodiment of the invention, a screwing plug for controlling on-off is installed on the oil return pipeline.

In an embodiment of the present invention, the electric pump is installed outside the oil tank, the electric pump includes a dc motor and a plunger pump, an output shaft of the dc motor is connected to a permanent magnet rotor through a motor transmission shaft, a permanent magnet inner rotor that is rotated by magnetic force transmission is installed inside the permanent magnet rotor, the permanent magnet inner rotor is connected to an output shaft of the plunger pump through a pump transmission shaft, the pump oil pipeline output from one end of the oil tank is communicated with a conventional oil cavity of the plunger pump, and a high-pressure oil cavity of the plunger pump is communicated with a pump oil joint that supplies oil to external equipment.

According to the oil tank, the transparent barrel body and the transparent observation barrel which is arranged independently are adopted, the oil quality and the oil quantity change in the barrel body are directly observed from the outside, meanwhile, the observation barrel is utilized to prevent return oil from directly entering the barrel body, the oil in the whole barrel body is prevented from being polluted by the return oil which does not reach the standard after filtration, and the filtration quality of the return oil can be directly observed manually through the barrel body and the observation barrel, so that the return oil which does not reach the standard after filtration is directly discharged out of the oil tank before overflowing the observation barrel.

The invention can process the oil return which does not reach the standard in advance, and achieves the purposes of reducing waste, finding problems in time and processing the problems by increasing manual monitoring on the quality of the oil return.

Drawings

FIG. 1 is a schematic perspective view of an integrated high pressure oil injection and evacuation device according to an embodiment of the present invention;

FIG. 2 is a front view of the integrated high pressure oil injection and evacuation device of one embodiment of the present invention;

FIG. 3 is a schematic perspective view of an oil tank according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of an oil tank according to an embodiment of the present invention;

FIG. 5 is a schematic view of a flexible connection according to an embodiment of the present invention;

FIG. 6 is a schematic view of the sealing plug of FIG. 5;

FIG. 7 is a schematic view of a filter attachment configuration according to one embodiment of the present invention;

FIG. 8 is a schematic view of the filter arrangement of FIG. 7;

FIG. 9 is a schematic view of a screwed plug disposed on an oil return line of a base according to an embodiment of the present invention;

FIG. 10 is a schematic view of an electric pump connection configuration according to an embodiment of the present invention;

FIG. 11 is a schematic illustration of an oil circuit for supplying oil to an electric pump in accordance with an embodiment of the present invention;

fig. 12 is a schematic view of the electric pump according to an embodiment of the present invention.

Detailed Description

As shown in fig. 1, 2 and 3, in one embodiment of the present invention, an integrated high pressure oil filling and vacuum pumping apparatus 100 is provided for replacing and filtering oil for various vehicles or mechanical equipment. The oil tank is characterized by comprising a movable frame 101 with wheels, an oil tank 10 for storing oil is mounted on the frame 101, an oil pumping pipeline 20 for connecting the oil tank 10 to supply the oil in the oil tank 10 to external equipment to be supplied with oil, an oil return pipeline 30 for pumping the oil in the equipment to be supplied with oil back to the oil tank 10, an electric pump 40 for providing oil injection power and a vacuum pump 2 for vacuumizing the equipment to be supplied with oil are connected to the oil pumping pipeline 20, a filter 50 for filtering return oil is mounted on the oil return pipeline 30, connectors 102 for conveniently connecting the equipment to be supplied with oil are respectively arranged on the frame 101, and the oil pumping pipeline 20 and the oil return pipeline 30 are respectively connected with input ends of the connectors 102.

The oil tank 10 is installed on the upper part of the frame 101, and comprises a disk-shaped base 11 fixed with the frame 101, and a hollow transparent barrel body 12 as a containing cavity, wherein the two ends of the barrel body 12 are open, and are vertically and hermetically installed on the base 11 through one end, the opening at the other end of the barrel body 12 is sealed through an upper cover 13, a transparent observation barrel 14 for containing preset oil inlet amount is vertically installed in the oil tank 10, the two ends of the observation barrel 14 are open, and the bottom of the observation barrel is hermetically installed above an oil return hole 32 of an oil return pipeline 30 in the base 11.

In operation, the device 100 can be manually pushed to the equipment to be supplied with oil, and the oil tank of the equipment to be supplied with oil is respectively connected with the oil pumping connector 21 of the oil pumping pipeline 20 and the oil return connector 31 of the oil return pipeline 30 on the frame 101 through hoses. The oil tank 10 is stored with oil in advance, the vacuum pump 2 is started through the control box 3 on the frame 101 to vacuumize the oil tank of the equipment to be supplied with oil, so as to prevent air from mixing into the oil, after the vacuumization is finished, the vacuum pump 2 is closed, the electric pump 40 is opened, the oil in the oil tank 10 is automatically injected into the oil tank of the equipment to be supplied with oil through the oil pumping pipeline 20 until the oil injection operation is finished, and then the electric pump 40 is stopped to finish the operation.

During the oil filling process, the oil quantity and the oil quality in the oil tank 10 can be directly observed through the transparent barrel body 12, so that corresponding treatment can be timely carried out. The oil referred to in the present embodiment refers to hydraulic oil used for equipment.

In addition, when oil inside the equipment to be oil-supplied needs to be filtered, the oil quantity in the oil tank 10 needs to be lower than the height of the observation barrel 14 inside, so that the oil can be injected and the oil return pipeline 30 can be started to perform oil pumping in a circulating operation mode, and the oil return pipeline 30 can also be independently started to perform oil pumping operation on the equipment to be oil-supplied; during operation, oil in an oil tank of equipment to be supplied is pumped into the filter 50 on the oil return pipeline 30 through the electric pump 40, the return oil is filtered and then enters the observation barrel 14 of the oil tank 10 through the oil return pipeline 30, at the moment, whether the filtered return oil meets the filtering requirement can be directly observed through the barrel body 12 and the observation barrel 14, if the condition is met, the oil in the observation barrel 14 enters the barrel body 12 from the upper part after being full, and finally returns to the equipment to be supplied through the oil pumping pipeline 20; if the oil is not qualified, the oil return operation can be stopped or the oil which cannot reach the standard in filtration can be directly discharged out of the barrel body 12 through the observation barrel 14, the filter 50 can be replaced to change the filtering effect, the oil in the observation barrel 14 needs to be discharged before overflowing into the barrel body 12, and the oil in the whole barrel body 12 is prevented from being polluted.

In order to conveniently discharge oil which does not meet the conditions in the observation barrel 14, an oil discharge pipeline which is independently communicated with the interior of the observation barrel 14 is arranged on the base 11, and a screwed sealing plug is arranged at the opening of the oil discharge pipeline; in the oiling process, sealed end cap seals the oil extraction pipeline, and when observing that the oil that gets into in the observation bucket 14 filters not meeting the standard, can directly unscrew sealed end cap, makes the oil of observing in the bucket 14 directly discharge outside the staving 12 along the oil extraction pipeline, prevents that the oil that does not reach the standard from getting into in the staving 12.

The barrel body 12 and the observation barrel 14 in this embodiment are made of organic plastic or glass.

In a power-off or temporary state, oil in the oil tank 10 can be conveyed to equipment to be supplied with oil through the manual connector 103 by the manual pumping pump 1, meanwhile, a manual pressure gauge 102 for displaying pressure during manual oil supply can be mounted on the frame 101, and the manual pumping pump 1 can be used as a branch of the oil pumping pipeline 20.

This embodiment adopts transparent staving and the transparent observation bucket of independent setting, by the change of outside direct observation to the oil and the oil mass in the staving, utilizes the observation bucket to avoid the oil return directly to get into in the staving simultaneously, prevents to filter the oil in the oil pollution whole staving that does not reach standard, sees through the staving in addition and observes the filtration quality that the bucket can directly observe the oil return by the manual work to outside it directly discharges the oil tank before the oil return that does not reach standard overflows the observation bucket in filtering.

This embodiment can handle not up to standard oil return in advance, through increasing the artifical control to the oil return quality, reaches the purpose that reduces the waste and in time discover the problem and handle the problem.

The oiling equipment of this embodiment possesses evacuation, filtration and oiling three kinds of functions simultaneously, has improved the application scope of oiling car.

In one embodiment of the present invention, in order to prevent the oil to be supplied from being excessively filled into the oil tank, an overflow line 60 may be connected to the pump oil line 20, one end of the overflow line 60 is connected to the pump oil line 20, and the other end is connected to the oil tank 10, a spill valve 61 is installed at the connection between the overflow line 60 and the pump oil line 20, and an overflow pipe 62 is vertically installed at the outlet of the overflow line 60 in the oil tank 10, as shown in fig. 4.

When the oil pump pipeline 20 is full of oil to be output to the oil supply equipment, the oil pressure in the oil pump pipeline 20 is increased, and when the increased pressure reaches a preset value, the overflow valve 61 is opened, so that the redundant oil enters the overflow pipeline 60 and then enters the oil tank 10 and is discharged to the barrel body 12 from the upper end of the overflow pipe 62.

The height of the overflow pipe 62 is generally required to be higher than the height of the oil amount conventionally stored in the barrel body 12, so that an oil filler can directly see through the barrel body 12 to see whether the upper end of the overflow pipe 62 is filled with oil or not to determine whether the oil filling work is completed. The overflow pipe 62 can be made of a transparent material or a metal material.

As shown in fig. 4, the upper lid 13 for sealing the tub 12 includes an inner lid 131 sealingly fitted into an opening at the upper end of the tub 12, and a pressing lid 132 for pressing and fixing the inner lid 131 at a current position, in order to facilitate sealing and opening of the tub 12; the inner lid 131 is a circular structure made of metal and having a stepped protrusion, the protrusion of the inner lid 131 is an inner ring 1311 for insertion into the open end of the tub 12, the circular portion of the inner lid 131 is an outer ring 1312 in contact with the open end of the tub 12, and an elastic ring gasket 133 is installed between the outer ring 1312 and the open end of the tub 12. The cover 132 has a metal plate-like structure attached to the upper surface of the outer ring 1312 of the inner cover 131, and has an area larger than that of the inner cover 131, and a fixing rod 17 connected to the base 11 of the oil tank is attached to the periphery of the cover 132.

During installation, the inner cover 131 is inserted into the opening end of the barrel body 12 through the inner ring 1311, then the outer ring 1312 is pressed on the edge of the opening end of the barrel body 12, and the annular gasket 133 is placed on the opening end of the barrel body 12, so that the sealing effect can be improved, meanwhile, the rigid contact between the inner cover 131 and the barrel body 12 can be avoided, and the barrel body 12 is prevented from being damaged.

Gland 132 is placed at the upper surface of inner cup 131, and dead lever 17 is the metal pole, and the usable screw thread of dead lever 17 or nut are connected with gland 132 and base 11 respectively, through the nut on the tightening dead lever 17, can make gland 132 fix inner cup 131 at the open end of staving 12, prevent that inner cup 131 is not hard up and reduce the leakproofness, have overcome the difficult fixed problem of direct trompil of organic material. In the pressing process of the pressing cover 132, the annular gasket 133 may slow down the pressing force between the inner lid 131 and the tub 12, preventing damage to the open end of the tub 12. In the present embodiment, the pressing cover 132 has a rectangular structure, and the fixing levers 17 are installed at four rectangular corners outside the area of the inner cover 131.

During oil injection, negative pressure is formed inside the oil tank 10 under the suction of the electric pump 40, and in this state, the upper cover 13 is not easy to open, in the present embodiment, four threaded holes 134 are symmetrically arranged at positions of the inner cover 131 corresponding to the annular gasket 133, a tailless bolt is screwed into each threaded hole 134, and the tail of the installed tailless bolt cannot expose the upper surface of the inner cover 131, so as to avoid affecting the fixation of the gland 132.

When it is desired to open the inner lid 131, the tailless bolt may be tightened to bring the front end thereof into contact with the annular gasket 133 and press the annular gasket 133 to form a pocket communicating with the inside of the tub body 12, which allows the inside and the outside of the tub body 12 to communicate with each other, thereby balancing the pressure inside and outside the tub body 12, and then the inner lid 131 may be easily opened.

In addition, a pressure gauge 135 reflecting the pressure inside the tub 12 and a purge valve 136 for releasing the pressure inside the tub 12 may be installed on the upper cover 13.

An annular ring 111 with an upward opening is arranged on a base 11 of the oil tank 10, the bottom end of the barrel body 12 is inserted into the annular ring 111, an annular fixed cavity 112 with an open end is arranged at the center of the annular ring 111 of the base 11, the annular fixed cavity 112 is of a tubular structure with one open end, the open end is upward, a connector 113 communicated with the inside is vertically arranged at the bottom, the connector 113 penetrates out of the base 11 and is connected with an oil return pipeline 30, a fixing part 114 is screwed on one end of the connector 113 penetrating out of the base 11, the fixing part 114 screws the connector 113 relative to the base 11 to enable the bottom surface of the annular fixed cavity 112 to be tightly attached to the inner surface of the base 11, and the fixing part 114 can be; the bottom end of the sight glass 14 is inserted into the open end of the annular fixed chamber 112.

Multiple annular sealing grooves can be arranged at the contact positions of the barrel body 12 and the annular ring 111, the upper cover 13 and the like and at the joints of the annular fixing cavity 112 and the observation barrel 14 and the bottom 11, so as to improve the sealing effect of the joints.

As shown in fig. 5, in one embodiment of the present invention, the oil passages of the pump oil line 20, the oil return line 30 and the overflow line 60 are respectively formed by movable joints 70 that are movably disassembled, and the specific movable joints 70 include a through pipe 71 for transferring oil, a steering joint 72 for a corner, and a disassembling joint 73 for facilitating the disassembly of the through pipe 71.

The through pipe 72 is a hollow straight pipe with two open ends, the steering joint 71 is an integral structure, and is provided with a jack 711 for sealing and inserting one end of the through pipe 72 and a connecting pipe 712 which is communicated with the jack 711 and is vertical to the jack 711; the detachable connector 73 is also an integral structure, and is provided with a through-hole 732 for hermetically inserting one end of the through-pipe 72, and a connection pipe 731 which is communicated with the through-hole 732 and perpendicular to the through-hole 732, and a sealing plug 733 which movably seals the through-hole 732 is mounted at one end of the through-hole 732.

When in connection, the through pipe 72 with the corresponding length can be selected according to the length of a conveying path, a steering joint 71 and a dismounting joint 73 are adopted at a position needing to change direction, two ends of the same through pipe 72 are respectively inserted into a through hole 711 and a through hole 732 of the steering joint 71 and the dismounting joint 73, connecting

pipes

712 and 731 of the steering joint 71 and the dismounting joint 73 can be respectively used for connecting another through pipe 72 or a connecting point on the base 11 or the frame 101, corresponding sealing grooves and sealing rings are respectively arranged in the through hole 711 and the through hole 732 or at two ends of the through pipe 72, and the through pipe 72 is directly connected in an inserting manner.

The sealing plug 733 is screwed into one end of the through hole 732 corresponding to the through pipe 72 through a screw, and is normally used for sealing an outlet of the end of the through hole 732, so that the detachable joint 73, the through pipe 72 and the steering joint 71 form a communicated oil conveying pipeline, and the angle and direction of the connecting

pipes

712 and 731 can be adjusted according to the direction of the pipeline.

When maintenance or adjustment of each pipeline is needed, the sealing plug 733 can be screwed out of the through hole 732, the through pipe 72 is pulled out of the through channel 732, and the through pipe 72 can be detached or replaced individually under the condition that the positions of the detaching joint 73 and the steering joint 71 are kept unchanged, so that other parts can be detached or installed step by step. According to the embodiment, each part can be installed in a sectional mode when being installed, any module in the device can be independently disassembled and installed under the condition that the oil tank 10 and other parts do not need to be moved, maintenance efficiency and installation efficiency are greatly improved, the capacity that a connecting point between each pipeline and each part bears rigid impact can be improved, pipeline leakage is reduced, and sealing effect is improved.

As shown in fig. 6, in order to prevent one end of the sealing plug 733 near the oil passage from affecting the oil passage in the release joint 73, a plurality of fixing posts 734 may be provided at an end of the sealing plug 733 inserted into the through hole 732 and axially protruding and spaced from each other. The gaps between the fixing posts 734 can form oil paths for oil to pass through, and the fixing posts 734 can limit the insertion depth of the through pipe 72 to prevent the insertion end of the through pipe 72 from blocking the passage inside the connecting pipe 731.

Further, the through pipe 72 may be inserted into an opening of the inner hole penetrating one end of the through hole 732 to be provided as the diameter-increased section 721, so as to increase the oil passing amount at the outlet.

As shown in fig. 7 and 8, in an embodiment of the present invention, a filter 50 convenient for observation and replacement is provided, the filter 50 includes an oil inlet joint 54 for oil inlet, the oil inlet joint 54 is fixed on the frame 101 through a screw thread and is communicated with the oil return joint 31, a grooved oil receiving cylinder 51 is installed outside the oil inlet joint 54, a filter cover 52 sleeved on the oil inlet joint 54 is arranged inside the grooved oil receiving cylinder 51, a transparent pipe 53 is hermetically sleeved outside the grooved oil receiving cylinder 51, a limiting member 56 for limiting the transparent pipe 53 to a current sleeving position is arranged at the bottom of the grooved oil receiving cylinder 51, and the oil return pipeline 30 is communicated with the bottom of the grooved oil receiving cylinder 51.

The grooved oil receiving cylinder 51 is a metal cylinder having an open end, a plurality of observation windows are provided in the cylinder body, a radially projecting fixing ring 511 is provided at the open end, and the fixing ring 511 is fixed to the frame 101 by a bolt-equipped snap ring 55 after coming into contact with the frame 101. The filter cover 52 is of a hollow double-layer cylindrical structure, the inner layer is a coarse filter screen, the outer layer is a fine filter screen, oil input by the oil inlet joint 54 enters the filter cover 52, the oil enters the grooved oil receiving cylinder 51 after being filtered by the coarse filter screen and the fine filter screen, the transparent pipe 53 seals an observation window on the grooved oil receiving cylinder 51, and the current state of the filter cover 52 can be directly observed from the outside through the observation window. The transparent tube 53 is sleeved on the outer surface of the grooved oil receiving cylinder 51 in a sleeving and inserting mode, the upper end of the transparent tube is in contact with and sealed with the snap ring 55, the lower end of the transparent tube is positioned at the upper part of the bottom end of the grooved oil receiving cylinder 51, the fixing piece 56 arranged at the bottom end of the grooved oil receiving cylinder 51 can be a stop block or a stop column screwed into a threaded hole in the grooved oil receiving cylinder 51, and at least part of the fixing piece 56 is exposed out of the outer circumferential surface of the grooved oil receiving cylinder 51 and is in contact with the bottom of the transparent tube 53 to support the.

As shown in fig. 9, the oil return line 30 is connected to the interface at the bottom end of the grooved oil receiving cylinder 51, and a screw plug 32 for opening and closing an oil path is installed on the oil return line 30 to prevent oil from flowing out of the oil tank 10 when the filter 50 is maintained, and a specific screw plug 32 may be installed on the oil return line 30 at the base 11, and the screw plug 32 blocks the oil return line 30 when screwing in, and opens the oil return line 30 when screwing out.

Adopt the trough of belt of taking the observation window to connect an oil section of thick bamboo 51 and hyaline tube 53 complex structure, can change the problem that prior art's filter 50 can not observe inside filter mantle 52 state at any time, the trough of belt of metal material connects an oil section of thick bamboo 51 convenient fixed and processing opening simultaneously, interface and screw hole isotructure, utilize independent hyaline tube 53 not only can connect an oil section of thick bamboo 51 to the trough to realize sealed, still conveniently observe user state and the filtration state of filter mantle 52 itself simultaneously, and it is very convenient wholly to dismantle, the maintenance and the change efficiency of filter are greatly improved.

As shown in fig. 10 and 11, in one embodiment of the present invention, in order to improve the driving effect, the electric pump 40 is installed outside the oil tank 10 in an oil-engine-separated arrangement. The electric pump 40 comprises a direct current motor 41 for providing driving power and a plunger pump 42 for pressurizing, wherein an output shaft of the direct current motor 41 is fixedly connected with a permanent magnet rotor 44 through a motor transmission shaft 43, a permanent magnet inner rotor 45 which rotates through magnetic force conduction is installed inside the permanent magnet rotor 44, and the permanent magnet inner rotor 45 is fixedly connected with an output shaft of the plunger pump 42 through a pump transmission shaft 46. As shown in fig. 11, the pumping oil pipe 20 at one end of the oil tank 10 is connected with the plunger pump 42 and enters the normal oil chamber 421 thereof, and the high-pressure oil chamber 422 of the plunger pump 42 is communicated with the pump oil joint 21 of the equipment to be supplied with oil.

The pumping oil pipeline in fig. 10 is connected to the high-pressure oil chamber of the plunger pump to output high-pressure oil, and the pumping oil pipeline in fig. 11 is connected to the oil tank to input normal-pressure oil into the normal-pressure oil chamber 421 of the plunger pump.

The axial leads of the driving shaft of the direct current motor 41, the motor transmission shaft 43, the permanent magnet rotor 44, the permanent magnet inner rotor 45, the pump transmission shaft 46 and the output shaft of the plunger pump 42 are coincident, when the direct current motor 41 works, the permanent magnet rotor 44 is driven to rotate to generate magnetic lines of force, then the permanent magnet inner rotor 45 is driven to rotate to drive the plunger pump 42 to rotate, and the rotation of the plunger pump 42 conveys oil in the conventional oil cavity 421 to the high-pressure oil cavity 422 to form high-pressure oil which is then output to equipment to be supplied with oil. A pressure gauge 22 connected to the oil pumping line 20 may be provided on the frame 101.

The arrangement mode through the oil engine separation can avoid placing the electric pump 40 in the barrel body 12 in the prior art, thereby polluting the problem of oil in the barrel body 12, reducing the sealing grade of the electric pump 40, and facilitating the installation and the later maintenance. The plunger pump 42 is driven by a non-conductive connection, which can reduce the volume of the entire electric pump 40 and improve the stability.

As shown in fig. 12, the specific structure of the electric pump 40 is explained as follows:

the output shaft of direct current motor 41 and plunger pump 42 is arranged relatively, both are through holding the connection shell 47 fixed connection including the intermediate junction piece together, motor drive shaft 43 one end is through inner groovy and direct current motor 41's output shaft connection, the other end inserts in the connecting hole of permanent magnet rotor 44, permanent magnet inner rotor 45 movable mounting is in the inside of permanent magnet rotor 44, and be connected with the one end of pump drive shaft 46 through the connecting hole, the other end cover of pump drive shaft 46 is on the output shaft of plunger pump 42, the high pressure oil pocket 422 of plunger pump 42 sets up the one end rather than the output shaft, and be provided with output channel 423 and be connected to pump oil pipeline 20.

A bearing a431 is fitted between the outer circumference of the motor drive shaft 43 and the inner circumference of the connection housing 47, and in order to prevent a gap from occurring between the bearing a431 and the inner surface of the connection housing 47, a support ring 432 may be fitted over the outer circumference of the bearing a431, the inner circumferential surface of the support ring 432 being in contact with the outer circumferential surface of the bearing a431, the outer circumferential surface being in contact with the inner circumferential surface of the connection housing 47, the support ring 432 being fixed by a bolt 433 penetrating the connection housing 47.

In order to facilitate the connection between the connecting housing 47 and the direct motor 41, an adapter ring 411 may be installed at one end of an output shaft of the direct current motor 41, one end of the adapter ring 411 is inserted into the external housing 47 and fixed to the external housing 47 through a bolt 412, one end of the adapter ring 411 extending into the external housing 47 contacts with the support ring 432 to prevent the support ring 432 from moving axially, meanwhile, a collar a434 for preventing an outer ring of the bearing a431 from moving relative to the support ring 432 is installed at one end of the bearing a431 close to the adapter ring 411, the motor transmission shaft 43 is fixedly connected to the permanent magnet rotor 44 through a bolt 435, and a collar B436 for preventing the motor transmission shaft 43 from moving axially is installed between the motor transmission shaft 43 and the.

An isolation sleeve 441 is mounted at the other end of the permanent magnet rotor 44, the outer circumferential surface of the isolation sleeve is in contact with the inner circumferential surface of the connecting shell 47, the isolation sleeve 441 is used for sealing and isolating an air cavity at one end of the direct current motor 41 and a normal pressure oil cavity 421 at one end of the plunger pump 42, the isolation sleeve 441 is fixed with the connecting shell 47 through a bolt 442, and the plunger pump 42 is fixed with the isolation sleeve 441 through a bolt 424. The pump transmission shaft 46 is installed in the spacer sleeve 441, one end of the pump transmission shaft is fixedly connected with the permanent magnet inner rotor 45 through a bolt 461, the other end of the pump transmission shaft is connected with an output shaft of the plunger pump 42, a bearing B462 is sleeved on the outer circumference of the pump transmission shaft 46, the outer circumferential surface of the bearing B462 is contacted with the inner circumferential surface of the spacer sleeve 441, and a clamping ring C463 for preventing the bearing B462 from axially moving is installed between the bearing B462 and the pump plug pump 42.

When the direct current motor 41 works, the output shaft of the direct current motor 41 drives the motor transmission shaft 43 and the permanent magnet rotor 44 to rotate synchronously at a high speed, the permanent magnet inner rotor 45, the pump transmission shaft 56 and the plunger pump 42 inside are driven to move synchronously at a high speed and circularly by magnetic force conduction, and the plunger pump 42 can convert hydraulic oil without pressure inside into high-pressure hydraulic oil to flow out of the inner hole of the output channel 423 in the rotating process.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. An integrated high-pressure oil injection and vacuum pumping device comprises an oil tank for storing oil, an oil pumping pipeline and an oil return pipeline which are respectively connected with the oil tank and external equipment to be supplied with oil, an electric pump which is connected with the oil pumping pipeline and provides oil injection power, and a vacuum pump which is used for vacuumizing the equipment to be supplied with oil,

the oil tank comprises a base, a hollow transparent barrel body, a sealing upper cover, a transparent observation barrel and a filter, wherein one end of the hollow transparent barrel body is hermetically arranged on the base, the opening at the other end of the barrel body is provided with the sealing upper cover, the inlet of the oil return pipeline in the oil tank is provided with the transparent observation barrel for accommodating preset oil inlet amount, and the oil return pipeline is provided with the filter for filtering oil;

an overflow pipeline is connected to the oil pumping pipeline, one end of the overflow pipeline is connected with the oil pumping pipeline, the other end of the overflow pipeline is connected with the oil tank, an overflow valve is installed on the overflow pipeline, and an overflow pipe is vertically installed at the outlet of the overflow pipeline in the oil tank;

the oil paths of the oil pumping pipeline, the oil return pipeline and the overflow pipeline are respectively formed by movable connecting pieces, each movable connecting piece comprises a through pipe, a steering joint and a dismounting joint, the through pipes are hollow pipes with openings at two ends, each steering joint is provided with a jack for hermetically splicing one end of each through pipe, and a connecting pipe which is communicated with the jacks and is perpendicular to the jacks, each dismounting joint is provided with a through jack for hermetically splicing one end of each through pipe, and a connecting pipe which is communicated with the through jacks and is perpendicular to the through jacks, and one end of each through jack is provided with a sealing plug for movably sealing the through jacks;

the filter comprises an oil inlet joint for connecting external equipment, a grooved oil receiving cylinder for fixing the oil inlet joint at a mounting point, a filter cover sleeved on the oil inlet joint is mounted in the grooved oil receiving cylinder, the oil return pipeline is communicated with the bottom of the grooved oil receiving cylinder, and a transparent pipe is hermetically sleeved outside the grooved oil receiving cylinder; the body of the grooved oil receiving cylinder is provided with an observation window for directly observing the filter cover, and the bottom of the grooved oil receiving cylinder is provided with a limiting piece for limiting the transparent pipe to the current sleeving position.

2. The integrated high pressure oiling and evacuating equipment according to claim 1,

the sealing upper cover comprises an inner cover which is embedded in an opening at the upper end of the barrel body in a sealing mode, and a gland which is used for fixing the inner cover at the current position, wherein the inner cover comprises an inner ring which is inserted into the opening end of the barrel body and an outer ring which is contacted with the end part of the opening end of the barrel body, an elastic annular gasket is arranged between the outer ring and the end part of the opening end of the barrel body, the area of the gland is larger than that of the inner cover, and a fixing rod which is connected with the base is arranged at the periphery of the gland.

3. The integrated high pressure oiling and evacuating equipment according to claim 2,

and a through threaded hole is formed in the position, corresponding to the annular gasket, of the inner cover, and a tailless bolt is screwed in the through threaded hole.

4. The integrated high pressure oiling and evacuating equipment according to claim 1,

the utility model discloses an observation barrel, including base, observation bucket, oil return pipeline, base, fixing piece, the fixed chamber of annular of taking the open end is installed to the centre of a circle department of base, the bottom outside in the fixed chamber of annular is provided with and wears out the base and with oil return pipeline connects's connector the end of wearing out of connector is twisted and is served will the fixed chamber of annular is fixed the mounting in the base, the observation bucket is in through the sealed cartridge of one end in the open end.

5. The integrated high pressure oiling and evacuating equipment according to claim 4,

an oil discharge pipeline communicated with the inside of the observation barrel is arranged on the base, and a screwing type sealing plug is installed on the oil discharge pipeline.

6. The integrated high pressure oiling and evacuating equipment according to claim 1,

and the oil return pipeline is provided with a screwing type plug for controlling the on-off state.

7. The integrated high pressure oiling and evacuating equipment according to claim 1,

the electric pump is installed the outside of oil tank, the electric pump includes DC motor and plunger pump, DC motor's output shaft passes through motor drive shaft and is connected with permanent magnet rotor, permanent magnet rotor's internally mounted has through magnetic force conduction pivoted permanent magnet inner rotor, permanent magnet inner rotor pass through pump drive shaft with the output shaft of plunger pump is connected, by oil tank one end is exported pump oil pipeline with the conventional oil pocket intercommunication of plunger pump, the high pressure oil pocket of plunger pump with the pump oil head intercommunication for the external equipment fuel feeding.