CN114017655B

CN114017655B - Automatic oiling device

Info

Publication number: CN114017655B
Application number: CN202111300241.4A
Authority: CN
Inventors: 罗军建; 刘伟忠
Original assignee: Fengshun County Taiyada Industry Co ltd
Current assignee: Fengshun County Taiyada Industry Co ltd
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2023-01-10
Anticipated expiration: 2041-11-04
Also published as: CN114017655A

Abstract

The invention relates to the technical field of oil injection, in particular to an automatic oil injection device, which comprises an oil drum, an oil pump, a proportional valve, an oil injection nozzle, an oil storage component and a drainage component, wherein the oil drum, the oil pump, the proportional valve and the oil injection nozzle are sequentially communicated, an oil storage cavity is arranged in the oil storage component, an oil liquid level and the oil storage cavity form an air cavity, the air cavity is communicated with an output port of the oil pump, the drainage component comprises a detection port, an oil inlet, a first oil outlet and a second oil outlet, when the pressure of the detection port is fixed, the oil inlet is communicated with the first oil outlet, when the pressure of the detection port is increased, the oil inlet, the first oil outlet and the second oil outlet are communicated, the detection port is communicated with the air cavity, the oil inlet is communicated with the bottom end of the oil storage cavity, the first oil outlet is communicated with the proportional valve, and the second oil outlet is communicated with the oil drum.

Description

Automatic oiling device

Technical Field

The invention relates to the technical field of oil injection, in particular to an automatic oil injection device.

Background

Many mechanical equipment running parts are lubricated, and grease lubrication is one of the most common ways of lubrication at present. At present, grease injection equipment is roughly divided into two types, namely manual grease injection equipment and motorized grease injection equipment, wherein the two types of grease injection equipment are different in applied environment and characteristics. The motorized butter oiling machine has the characteristics of large oil output, relatively lasting and high efficiency of oiling, simple operation, labor saving, quantitative running towards oiling, clean and environment-friendly oiling process and the like, and is increasingly valued in the industry.

The problems that the output of an oil pump is unstable, oil outlet bubbles are more, the instantaneous release pressure is unstable, the viscosity of oil is high, the constant pressure output cannot be realized and the like in the current industry cannot be solved, and the precise oil quantity control cannot be realized.

Chinese patent CN201510656680.7 discloses an automatic bearing grease squirt. The oil tank is characterized by comprising an oil tank, an oil delivery pipe controlled by an oil pump and an electromagnetic valve, and a reciprocating cylinder which is positioned on a machine body and drives a gear rack mechanism to move, wherein the oil delivery pipe controlled by the electromagnetic valve is connected with the upper end of a hollow shaft, the hollow shaft penetrates through a 7-shaped supporting plate, a gear of the gear rack mechanism is arranged on the hollow shaft, the lower end of the hollow shaft is connected with an oil filling change-over oil box and an oil filling nozzle, and a rack of the gear rack mechanism is connected with a piston head of the reciprocating cylinder; the left side of the upper cover plate of the oil injection change-over oil box is connected with the lower end of the hollow shaft through threads, and the right side of the lower cover plate of the oil injection change-over oil box is connected with an oil injection nozzle through threads.

When the oil pump of this oiling machine was closed, its oil that pumps because of inertia can produce pressure to the pipeline, easily makes next time produce oil unstablely, and then the uncontrollable oil output.

Disclosure of Invention

In view of the above, it is necessary to provide an automatic oiling device for solving the problems in the prior art.

In order to solve the problems of the prior art, the invention adopts the technical scheme that:

the utility model provides an automatic oiling device, includes oil drum, oil pump, proportional valve, pump nipple, oil storage subassembly and drainage subassembly, oil drum, oil pump, proportional valve and pump nipple communicate in proper order, are provided with the oil storage chamber that extends along vertical direction in the oil storage subassembly, and oil storage intracavity fluid is not full of, and oil level and oil storage chamber form the air chamber, and the air chamber passes through the delivery outlet intercommunication of pipeline and oil pump, and the drainage subassembly is including detecting mouthful, oil inlet, first oil-out and second oil-out, detects a pressure intensity regularly, and oil inlet and first oil-out intercommunication, when detecting mouthful pressure intensity increase, oil inlet, first oil-out and second oil-out intercommunication, it communicates with the air chamber through pipeline and detection mouth, and the oil inlet passes through the bottom intercommunication of pipeline with the oil storage chamber, first oil-out and proportional valve intercommunication, and second oil-out and oil drum intercommunication.

Preferably, the drainage assembly comprises a drainage cylinder and a piston piece, the drainage cylinder is arranged along the vertical direction, the top end of the drainage cylinder is provided with a detection pipe communicated with an inner cavity of the drainage cylinder, the detection pipe is communicated with the air cavity through a pipeline, the drainage cylinder is also provided with an oil inlet pipe, a first oil outlet pipe and a second oil outlet pipe, the oil inlet pipe, the first oil outlet pipe and the second oil outlet pipe extend along the radial direction of the drainage cylinder, the second oil outlet pipe is positioned at the bottoms of the oil inlet pipe and the first oil outlet pipe, the oil inlet pipe is communicated with the bottom end of the oil storage cavity through a pipeline, the first oil outlet pipe is communicated with the proportional valve through a pipeline, and the second oil outlet pipe is communicated with the oil drum through a pipeline; the piston piece is coaxially arranged in the drainage cylinder in a sliding mode, the drainage ring groove coaxial with the piston piece is formed in the circumferential surface of the piston piece, when the top pressure of the piston piece is equal to the bottom pressure of the piston piece, the oil inlet pipe, the drainage ring groove and the first oil outlet pipe are sequentially communicated, when the top pressure of the piston piece is larger than the bottom pressure of the piston piece, the piston piece slides in the drainage cylinder along the axial direction, and the oil inlet pipe, the drainage ring groove, the first oil outlet pipe and the second oil outlet pipe are communicated.

Preferably, the drainage assembly further comprises a resetting piece, the resetting piece is arranged in the drainage tube, and two ends of the resetting piece abut against the bottom end of the piston piece and the bottom end of the inner cavity of the drainage tube respectively.

Preferably, the piece that resets is the spring, and the coaxial setting of spring is in the drainage section of thick bamboo, and elastic both ends shutoff butt in the bottom of piston spare and the inner chamber bottom of drainage section of thick bamboo.

Preferably, the drainage assembly further comprises a lifting plate and a linear push rod, the lifting plate is arranged between the bottom end of the inner cavity of the drainage cylinder and the bottom end of the piston piece along the axial sliding direction, the piston piece is arranged between the top end of the lifting plate and the bottom end of the detection tube, the linear push rod is arranged at the bottom end of the drainage cylinder, the output shaft of the linear push rod penetrates through the drainage cylinder along the axial direction, and the top end of the output shaft is fixedly connected with the bottom end of the lifting plate.

Preferably, the drainage assembly further comprises a sealing ring, the sealing ring is sleeved at two ends of the piston piece, the sealing ring is in interference fit with the inner cavity of the drainage cylinder, the sealing ring at the top end is higher than the oil inlet pipe and the first oil outlet pipe, and the sealing ring at the bottom end is lower than the second oil outlet pipe.

Preferably, the two ends of the piston piece are coaxially provided with mounting ring grooves, and the sealing ring is sleeved on the mounting ring grooves.

Preferably, the oiling device further comprises a liquid level sensor, an air pump and a pressure reducing valve, the liquid level sensor is arranged at the top end of the oil storage cavity in the vertical direction, the detection end of the liquid level sensor penetrates the oil level along the vertical direction, the air outlet of the air pump is communicated with the air cavity through a pipeline, and the pressure reducing valve is arranged on the communicating pipeline of the air cavity and the detection port.

Preferably, the oil injection device further comprises a pressure sensor, the pressure sensor is arranged on the drainage component, and the detection end of the pressure sensor extends to the detection port.

Preferably, the oil injection device further comprises a check valve, the check valve is arranged on a communication pipeline between the oil pump and the oil storage cavity, and the check valve is used for guiding the oil to flow from the oil pump to the oil storage cavity.

Compared with the prior art, the beneficial effect of this application is:

1. the oil filling device comprises an oil drum, an oil pump, a proportional valve and an oil filling nozzle, bubbles in pumped oil liquid can be discharged when the oil pump works through the oil storage component, and the oil liquid pumped by the oil pump due to inertia can flow back into the oil drum through the drainage component when the oil pump is closed, so that the stable oil filling process is ensured, and no bubbles are generated;

2. the drainage component of the oil filling device comprises a drainage cylinder and a piston piece which slides in the drainage cylinder along the axial direction, so that when the pressure intensity of the top end of the piston piece is changed under the driving of an oil storage cavity, the drainage ring groove can be selectively communicated with the oil inlet pipe, the first oil outlet pipe and the second oil outlet pipe, and the oil pressure in a pipeline can be released to an oil drum;

3. according to the drainage assembly of the oil injection device, the reset piece is arranged between the piston piece and the bottom end of the inner cavity of the drainage cylinder, so that after oil pressure of a pipeline is released, the piston piece is elastically reset through the reset piece, and the drainage ring groove is continuously communicated with the oil inlet pipe and the first oil outlet pipe, so that the pressure stability of the next oil injection pipe is ensured;

4. according to the drainage assembly of the oil injection device, the lifting plate capable of adjusting the height along the axial direction is arranged between the bottom end of the reset piece and the bottom end of the inner cavity of the drainage cylinder, so that the elasticity borne by the piston piece during resetting can be adjusted conveniently;

5. according to the drainage assembly of the oil injection device, the sealing ring is sleeved on the piston piece in a flowing manner, so that the drainage ring groove is sealed relative to the cavities at two ends of the piston piece, and oil in the drainage ring groove can be prevented from overflowing into the cavities due to pipe pressure;

6. the oil injection device can stably adjust the pressure in the air cavity through the liquid level sensor, the air pump and the pressure reducing valve, and then can adjust the height of the oil level in the oil storage cavity;

7. the oil injection device can monitor the pressure of the detection port in real time through the pressure sensor, so that the pressure of the air cavity can be guided and adjusted manually;

8. this oiling device is through setting up the check valve between oil storage chamber and oil pump, when can preventing that the oil pump from closing, direct reflux of fluid in the oil storage chamber because of the pipe pressure.

Drawings

FIG. 1 is a perspective view of an oil storage assembly and a drainage assembly of an embodiment from a first perspective;

FIG. 2 is a perspective view of the oil storage assembly and the drainage assembly of the embodiment from a second perspective;

FIG. 3 is a front view of the oil storage assembly and the flow directing assembly of the embodiment;

FIG. 4 is a side view of the oil storage assembly and the drainage assembly of an embodiment;

FIG. 5 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 isbase:Sub>A perspective sectional view taken along line A-A of FIG. 4;

FIG. 7 is a partial enlarged view of FIG. 5 at B;

FIG. 8 is a perspective view of the piston member and seal ring of the embodiment;

FIG. 9 is an exploded perspective view of the piston member and seal ring of the embodiment;

FIG. 10 is an axial cross-sectional view of the drain assembly of the embodiment with the oil inlet pipe, the drain relief groove and the first oil outlet pipe in communication;

FIG. 11 is an axial cross-sectional view of the flow directing assembly of the embodiment with the oil inlet pipe, the flow directing relief groove, the first oil outlet pipe and the second oil outlet pipe in communication;

FIG. 12 is a perspective view of an oil storage assembly of an embodiment;

FIG. 13 is a partial exploded perspective view of the oil storage assembly of the embodiment;

FIG. 14 is a perspective view of a drainage assembly of an embodiment;

fig. 15 is an internal structural schematic diagram of the drainage tube of the embodiment.

The reference numbers in the figures are:

1 a-an oil storage cylinder; 1a 1-a second oil inlet pipe; 1a 2-a third oil outlet pipe; 2 a-a drainage tube; 2a 1-a detector tube; 2a 2-an oil inlet pipe; 2a 3-a first oil outlet pipe; 2a 4-a second oil outlet pipe; 2 b-a piston member; 2b 1-a drainage ring groove; 2b 2-arranging a ring groove; 2 c-a reset piece; 2 d-a lifter plate; 2 e-a linear push rod; 2 f-sealing ring; 3-a liquid level sensor; 4-an air pump; 5-a pressure reducing valve; 6-a pressure sensor; 7-one-way valve.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

As shown in fig. 5 and 6:

Based on the embodiment, the existing oil injection equipment comprises an oil drum, an oil pump, a proportional valve and an oil injection nozzle, wherein the oil drum, the oil pump, the proportional valve and the oil injection nozzle are sequentially communicated, and when the oil pump and the proportional valve are started, a certain amount of oil can be injected into the surface of a workpiece by the oil injection nozzle;

the oil tank comprises the oil tank, an oil pump, a proportional valve and an oil filling nozzle, and further comprises a backflow assembly arranged between the oil pump and the proportional valve, wherein oil in an oil storage cavity of the oil storage assembly is not filled, namely the oil level in the oil storage cavity is lower than the top end of the oil storage cavity, so that an air cavity is formed above the oil level;

when the pressure of the air cavity is constant, the pressure of the detection port communicated with the air cavity is constant, namely the oil inlet is communicated with the first oil outlet, so that oil pumped out by the oil pump can flow to the proportional valve completely, and quantitative oil injection is facilitated;

when the metering valve and the oil pump are closed, the metering valve is blocked, and the oil pump pumps a certain amount of oil again due to inertia, so that a water hammer phenomenon is generated in a pipeline due to oil pressure, and the oil pressure can impact a pipeline due to incapability of being released, so that the metering pump and the pipeline can be damaged for a long time;

through setting up oil storage subassembly and drainage subassembly, make the oil pressure in the pipeline recoil to the oil storage chamber, and then make the air cavity volume reduce, its internal pressure increases promptly, make the pressure of the detection mouth with air cavity intercommunication together increase, and then make the oil inlet, first oil-out and second oil-out intercommunication, and the second oil-out is connected with the oil drum, make the oil pressure in the pipeline have the part to flow to the oil drum through the second oil-out, in order to maintain whole pipeline pressure balance, and after releasing the oil pressure, detection mouth pressure balance, make oil inlet and first oil-out intercommunication, thereby be convenient for next oiling maintain the pipe pressure.

Further, in order to solve the problem of how to selectively communicate the oil inlet, the first oil outlet and the second oil outlet when the pressure of the drainage port varies, as shown in fig. 5, 6, 10 and 11:

the drainage assembly comprises a drainage cylinder 2a and a piston member 2b,

the drainage cylinder 2a is arranged along the vertical direction, the top end of the drainage cylinder 2a is provided with a detection pipe 2a1 communicated with an inner cavity of the drainage cylinder, the detection pipe 2a1 is communicated with the air cavity through a pipeline, the drainage cylinder 2a is also provided with an oil inlet pipe 2a2, a first oil outlet pipe 2a3 and a second oil outlet pipe 2a4 which extend along the radial direction of the drainage cylinder, the second oil outlet pipe 2a4 is positioned at the bottoms of the oil inlet pipe 2a2 and the first oil outlet pipe 2a3, the oil inlet pipe 2a2 is communicated with the bottom end of the oil storage cavity through a pipeline, the first oil outlet pipe 2a3 is communicated with the proportional valve through a pipeline, and the second oil outlet pipe 2a4 is communicated with the oil drum through a pipeline;

the piston piece 2b is coaxially arranged in the drainage cylinder 2a in a sliding mode, a drainage ring groove 2b1 which is coaxial with the piston piece 2b is formed in the circumferential surface of the piston piece 2b, when the top end pressure of the piston piece 2b is equal to the bottom end pressure of the piston piece, the oil inlet pipe 2a2, the drainage ring groove 2b1 and the first oil outlet pipe 2a3 are sequentially communicated, when the top end pressure of the piston piece 2b is larger than the bottom end pressure of the piston piece, the piston piece 2b slides in the drainage cylinder 2a along the axial direction, and the oil inlet pipe 2a2, the drainage ring groove 2b1, the first oil outlet pipe 2a3 and the second oil outlet pipe 2a4 are communicated.

Based on the embodiment, when the pressure of the air cavity is balanced, the pressure of the detection port is balanced, so that the drainage ring groove 2b1 is communicated with the oil inlet pipe 2a2 and the first oil outlet pipe 2a3, the oil storage cavity is communicated with the proportional valve, and the oil pump can output oil normally;

when the oil pump and the proportional valve are closed, the oil pump continues to pump out a part of oil due to the inertia effect, so that the pressure in the pipeline is increased, the oil is enabled to flow back to the oil storage cavity, the oil level in the oil storage cavity is enabled to rise, the pressure in the air cavity is enabled to be increased, the detection pipe 2a1 is communicated with the air cavity through a pipeline, the top end of the piston part 2b is enabled to descend in the drainage cylinder 2a along the vertical direction under the pressure effect, the drainage ring groove 2b1 is enabled to be communicated with the oil inlet pipe 2a2, the first oil outlet pipe 2a3 and the second oil outlet pipe 2a4, the oil in the pipe is enabled to flow back to the oil drum through the second oil outlet pipe 2a4 due to the pressure effect, the pipeline pressure can be relieved, the pipeline pressure can be ensured to be consistent with the pipeline pressure before the oil pump is opened, and the next oil injection operation is prevented from being influenced by the stored pipe pressure.

Further, after the piston member 2b provided by the present application slides in the drainage cylinder 2a and still has a pipeline pressure balance, the piston member 2b cannot reset to communicate with the oil inlet pipe 2a2, the drainage ring groove 2b1 and the first oil outlet pipe 2a3, and in order to solve the problem, as shown in fig. 5:

the drainage assembly further comprises a resetting piece 2c, the resetting piece 2c is arranged in the drainage tube 2a, and two ends of the resetting piece 2c are respectively abutted to the bottom end of the piston piece 2b and the bottom end of the inner cavity of the drainage tube 2 a.

Based on the above-mentioned embodiment, when piston spare 2b slides along the axial in drainage tube 2a, so that drainage annular groove 2b1 intercommunication advances oil pipe 2a2, first oil outlet pipe 2a3 and second oil outlet pipe 2a4, in order to ensure to the oil drum release behind the unnecessary fluid in the pipeline, piston spare 2b can reset again, it has drainage annular groove 2b1 intercommunication to advance oil pipe 2a2 and first oil outlet pipe 2a3 to continue, set up piece 2c between the bottom of piston spare 2b and the bottom of drainage tube 2a inner chamber, reset piece 2c has along piston spare 2 b's axial elasticity, it can slide in drainage tube 2a just to need to overcome the elasticity that resets piece 2c when piston spare 2b, and when pipeline pressure is released, piston spare 2b rises along vertical direction under the elastic force that resets piece 2c, and then can make drainage annular groove 2b1 intercommunication advance oil pipe 2a2 and first oil outlet pipe 2a3.

Further, in order to solve the problem of how the restoring member 2c axially restores the piston member 2b, as shown in fig. 5:

the piece that resets 2c is the spring, and the coaxial setting of spring is in drainage tube 2a, and elastic both ends shutoff butt in the bottom of piston spare 2b and the inner chamber bottom of drainage tube 2 a.

Based on the above-mentioned embodiment, because of the piece 2c that resets is the spring, make the spring can set up between the bottom of piston spare 2b and the inner chamber bottom of drainage tube 2a with the axial, the spring has the characteristic that can follow the axial compression, make piston spare 2b when sliding in drainage tube 2a, piston spare 2b need overcome the elasticity of spring and just can follow the axial slip, and after pipeline pressure is released, piston spare 2b resets under the spring action of spring, and then continue to communicate into oil pipe 2a2 and first play oil pipe 2a3 through drainage annular groove 2b1.

As some optional embodiments of this application, the piece that resets 2c is the hydraulic shock absorber, and the hydraulic shock absorber sets up between the bottom of piston spare 2b and the inner chamber bottom of drainage tube 2a along the axial, and the hydraulic shock absorber has the characteristic that need overcome elasticity and just can make its both ends apart from reducing, and after external force disappears, the both ends distance of hydraulic shock absorber resets to can effectively reset piston spare 2 b.

Further, the resetting member 2c provided in the present application still has the defect that the resetting piston member 2b cannot adjust the resetting elasticity thereof in the axial direction, and in order to solve the problem, as shown in fig. 5:

the drainage assembly further comprises a lifting plate 2d and a linear push rod 2e, the lifting plate 2d is arranged between the bottom end of the inner cavity of the drainage cylinder 2a and the bottom end of the piston piece 2b along the axial direction in a sliding mode, the piston piece 2b is arranged between the top end of the lifting plate 2d and the bottom end of the detection tube 2a1, the linear push rod 2e is arranged at the bottom end of the drainage cylinder 2a, the output shaft of the linear push rod 2e penetrates through the drainage cylinder 2a along the axial direction, and the top end of the output shaft is fixedly connected with the bottom end of the lifting plate 2 d.

Based on the above embodiment, because the reset piece 2c is disposed between the bottom end of the piston piece 2b and the bottom end of the inner cavity of the drainage cylinder 2a, the piston piece 2b can move in the drainage cylinder 2a along the axial direction only by overcoming the elastic force of the reset piece 2c, the oil pumps of different models have different output powers, that is, the generated pipe pressures are also different, the pressure that leads to the increase of the air cavity is also different, if the piston piece 2b needs to overcome the same acting force of the reset piece 2c to slide, and when the elastic coefficient of the piston piece 2b is larger, and the detection pipe 2a1 has a lower pressure, the piston piece 2b can not slide in the drainage cylinder 2a because of overcoming the elastic force of the reset piece 2c, by setting the lifting plate 2d between the bottom end of the piston piece 2b and the bottom end of the inner cavity of the drainage cylinder 2a, and the reset piece 2c is disposed between the lifting plate 2d and the lifting plate 2d, by starting the linear push rod 2e, the distance between the lifting plate 2d and the piston piece 2b and the bottom end of the reset piece 2b can be adjusted, and then the distance between the top end of the elastic force of the reset piece 2c can be adjusted, and the elastic coefficient of the reset piece 2b can be adjusted, and then, and the elastic coefficient of the piston piece 2b can be adjusted.

Further, the piston member 2b provided in the present application still has a gap between the circumferential surface of the piston member 2b and the inner wall of the drainage cylinder 2a when sliding in the drainage cylinder 2a, and the oil pressure easily overflows outward through the gap, so as to solve the problem, as shown in fig. 7:

the drainage assembly further comprises a sealing ring 2f, the sealing ring 2f is sleeved at two ends of the piston part 2b, the sealing ring 2f is in interference fit with an inner cavity of the drainage cylinder 2a, the sealing ring 2f at the top end is higher than the oil inlet pipe 2a2 and the first oil outlet pipe 2a3, and the sealing ring 2f at the bottom end is lower than the second oil outlet pipe 2a4.

Based on the above embodiment, because the piston member 2b slides coaxially in the drainage cylinder 2a, the circumferential surface of the piston member 2b has a certain gap with the inner wall of the drainage cylinder 2a, oil easily overflows outwards through the gap due to pipe pressure, the sealing rings 2f are sleeved at the two ends of the piston member 2b, and the sealing rings 2f are in interference fit with the inner wall of the drainage cylinder 2a, so that the drainage ring groove 2b1 is sealed relative to the chambers at the two ends of the piston member 2b, thereby preventing the oil in the drainage ring groove 2b1 from overflowing into the chambers due to pipe pressure, and the sealing ring 2f at the top end is higher than the oil inlet pipe 2a2 and the first oil outlet pipe 2a3, and the sealing ring 2f at the bottom end is lower than the second oil outlet pipe 2a4, so that the drainage ring groove 2b1 is always sealed relative to the chambers in the sliding process of the piston member 2 b.

Further, the application provides that the sealing ring 2f is sleeved on both ends of the piston member 2b, and still has the defect that it is easy to separate from the piston member 2b along the axial direction, in order to solve this problem, as shown in fig. 8 and 9:

the both ends of piston spare 2b are provided with the coaxial settling ring groove 2b2 that is provided with, sealing washer 2f cover is established on settling ring groove 2b 2.

Based on the above embodiment, because of establishing sealing washer 2f at the both ends of piston spare 2b, when piston spare 2b along its axial slip, sealing washer 2f takes place to break away from the phenomenon along the axial of piston spare 2b easily, through settling annular 2b2 at the coaxial setting in the both ends of piston spare 2b, and establish sealing washer 2f on settling annular 2b2, sealing washer 2f is under the restraint at settling annular 2b2 both ends, can't take place to break away from the phenomenon along the axial of piston spare 2b, and then can effectively seal drainage annular 2b1 relative to the cavity.

Further, the oil provided by the present application still has the defect that the liquid level of the oil in the oil storage cavity cannot be adjusted, and in order to solve this problem, as shown in fig. 1, fig. 2 and fig. 3:

oiling device still includes level sensor 3, air pump 4 and relief pressure valve 5, and level sensor 3 sets up on the top of depositing the oil pocket along vertical direction, and level sensor 3's sense terminal penetrates oil level along vertical direction directly, and the gas outlet of air pump 4 passes through pipeline and air chamber intercommunication, and relief pressure valve 5 sets up on air chamber and the communicating pipe way that detects the mouth.

Based on the embodiment, the liquid level sensor 3, the air pump 4 and the pressure reducing valve 5 are all electrically connected with the controller, the air pump 4 is started to enable the air pump 4 to inject a certain amount of gas into the air cavity so as to reduce the height of the liquid level of the oil in the oil storage cavity, and further the pressure in the air cavity can be increased, so that the liquid level of the oil is reduced to a certain height due to the pressure of the air cavity; to raise the height of the oil level, i.e. the air chamber pressure is greater, the oil level is raised by the air chamber pressure being reduced by activating the pressure reducing valve 5; in this process, the level sensor 3 can monitor the height of the oil level in real time so that the controller can accurately control the height of the oil level.

Further, the air chamber provided by the present application still has a defect that the pressure thereof cannot be monitored in real time, and in order to solve this problem, as shown in fig. 7:

oiling device still includes pressure sensor 6, and pressure sensor 6 sets up on the drainage subassembly, and pressure sensor 6's sense terminal extends to detection mouthful department.

Based on the above embodiment, the pressure sensor 6 is electrically connected with the controller, and the pressure at the detection port can be monitored in real time through the pressure sensor 6, so that the pressure at the detection port can be controlled manually.

Further, the air chamber pressure increase that this application provided and then arouse and detect mouthful pressure change, still have the air in the air chamber and easily pass through the defect that oil pump and oil storage chamber intercommunication department flow back, for solving this problem, as shown in fig. 1 and fig. 2:

the oiling device further comprises a one-way valve 7, the one-way valve 7 is arranged on a communicating pipeline between the oil pump and the oil storage cavity, and the one-way valve 7 is used for guiding oil to flow to the oil storage cavity from the oil pump.

Based on above-mentioned embodiment, through setting up check valve 7 on the oil pump with deposit communicating pipe way in oil pocket, and check valve 7 guide fluid from the oil pump flow direction deposit the oil pocket, and then can prevent the direct reflux of fluid in the oil storage chamber, and can stably adjust the pressure in the air chamber.

As some optional embodiments of this application, the oil storage component includes oil storage cylinder 1a, oil storage cylinder 1a sets up along vertical direction, and the top of oil storage cylinder 1a is provided with the second oil inlet pipe 1a1 with the oil pump intercommunication, the bottom of oil storage cylinder 1a is provided with the third oil outlet pipe 1a2 with the oil inlet intercommunication of drainage component, form the oil storage chamber through the inner chamber at oil storage cylinder 1a, so that fluid can half-fill the inner chamber of oil storage cylinder 1a, and then make the oil level above can form the air chamber with the guide opening intercommunication, thereby can effectively get rid of the bubble in the fluid, and release the oil pressure.

The oil filling device comprises an oil drum, an oil pump, a proportional valve and an oil filling nozzle, bubbles in pumped oil liquid can be discharged when the oil pump works through the oil storage component, and the oil liquid pumped by the oil pump due to inertia can flow back into the oil drum through the drainage component when the oil pump is closed, so that the stable oil filling process is ensured, and no bubbles are generated;

the above examples, which are intended to represent only one or more embodiments of the present invention, are described in greater detail and with greater particularity, and are not to be construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides an automatic oiling device, includes oil drum, oil pump, proportional valve and pump nozzle, oil drum, oil pump, proportional valve and pump nozzle communicate in proper order, its characterized in that still includes oil storage subassembly and drainage subassembly, is provided with the oil storage chamber that extends along vertical direction in the oil storage subassembly, and oil storage intracavity fluid is not full of, and oil liquid level forms the air chamber with oil storage chamber, and the air chamber passes through the delivery outlet intercommunication of pipeline and oil pump, and the drainage subassembly is including detecting mouthful, oil inlet, first oil-out and second oil-out, detects a mouthful pressure regularly, oil inlet and first oil-out intercommunication, when detecting mouthful pressure increase, oil inlet, first oil-out and second oil-out intercommunication, it communicates with the air chamber to detect mouthful through pipeline, and the oil inlet passes through the bottom intercommunication of pipeline and oil storage chamber, and first oil-out and proportional valve intercommunication, and second oil-out and oil drum intercommunication.

2. The automatic oiling device according to claim 1, wherein the draining assembly comprises a draining cylinder (2 a) and a piston member (2 b),

the oil tank is characterized in that a drainage cylinder (2 a) is arranged along the vertical direction, a detection pipe (2 a 1) communicated with an inner cavity of the drainage cylinder (2 a) is arranged at the top end of the drainage cylinder (2 a), the detection pipe (2 a 1) is communicated with the air cavity through a pipeline, an oil inlet pipe (2 a 2), a first oil outlet pipe (2 a 3) and a second oil outlet pipe (2 a 4) which extend along the radial direction of the drainage cylinder are further arranged on the drainage cylinder (2 a), the second oil outlet pipe (2 a 4) is positioned at the bottoms of the oil inlet pipe (2 a 2) and the first oil outlet pipe (2 a 3), the oil inlet pipe (2 a 2) is communicated with the bottom end of the oil storage cavity through a pipeline, the first oil outlet pipe (2 a 3) is communicated with a proportional valve through a pipeline, and the second oil outlet pipe (2 a 4) is communicated with an oil tank through a pipeline;

the piston piece (2 b) is coaxially arranged in the drainage cylinder (2 a) in a sliding mode, a drainage ring groove (2 b 1) which is coaxial with the piston piece is formed in the circumferential surface of the piston piece (2 b), when the top pressure of the piston piece (2 b) is equal to the bottom pressure of the piston piece, the oil inlet pipe (2 a 2), the drainage ring groove (2 b 1) and the first oil outlet pipe (2 a 3) are sequentially communicated, when the top pressure of the piston piece (2 b) is larger than the bottom pressure of the piston piece, the piston piece (2 b) slides in the drainage cylinder (2 a) along the axial direction, and the oil inlet pipe (2 a 2), the drainage ring groove (2 b 1), the first oil outlet pipe (2 a 3) and the second oil outlet pipe (2 a 4) are communicated.

3. The automatic oil injection device according to claim 2, wherein the drainage assembly further comprises a resetting piece (2 c), the resetting piece (2 c) is arranged in the drainage tube (2 a), and two ends of the resetting piece (2 c) are respectively abutted against the bottom end of the piston piece (2 b) and the bottom end of the inner cavity of the drainage tube (2 a).

4. An automatic oil injection device according to claim 3, characterized in that the reset element (2 c) is a spring which is coaxially arranged in the drainage tube (2 a), and the two elastic ends are blocked and abutted against the bottom end of the piston element (2 b) and the bottom end of the inner cavity of the drainage tube (2 a).

5. The automatic oil injection device according to claim 2, wherein the drainage assembly further comprises a lifting plate (2 d) and a linear push rod (2 e), the lifting plate (2 d) is axially slidably arranged between the bottom end of the inner cavity of the drainage cylinder (2 a) and the bottom end of the piston member (2 b), the piston member (2 b) is arranged between the top end of the lifting plate (2 d) and the bottom end of the detection tube (2 a 1), the linear push rod (2 e) is arranged at the bottom end of the drainage cylinder (2 a), the output shaft of the linear push rod (2 e) axially penetrates through the drainage cylinder (2 a), and the top end of the output shaft is fixedly connected with the bottom end of the lifting plate (2 d).

6. The automatic oil injection device according to any one of claims 2 to 5, wherein the drainage assembly further comprises sealing rings (2 f), the sealing rings (2 f) are sleeved at two ends of the piston piece (2 b), the sealing rings (2 f) are in interference fit with the inner cavity of the drainage cylinder (2 a), the sealing ring (2 f) at the top end is higher than the oil inlet pipe (2 a 2) and the first oil outlet pipe (2 a 3), and the sealing ring (2 f) at the bottom end is lower than the second oil outlet pipe (2 a 4).

7. The automatic oiling device according to claim 6, wherein the piston member (2 b) is coaxially provided with a mounting ring groove (2 b 2) at both ends, and the sealing ring (2 f) is sleeved on the mounting ring groove (2 b 2).

8. The automatic oil injection device according to claim 1, further comprising a liquid level sensor (3), an air pump (4) and a pressure reducing valve (5), wherein the liquid level sensor (3) is arranged at the top end of the oil storage cavity in the vertical direction, the detection end of the liquid level sensor (3) directly penetrates the oil level in the vertical direction, the air outlet of the air pump (4) is communicated with the air cavity through a pipeline, and the pressure reducing valve (5) is arranged on the communication pipeline of the air cavity and the detection port.

9. The automatic oil injection device according to claim 8, wherein the oil injection device further comprises a pressure sensor (6), the pressure sensor (6) is arranged on the drainage assembly, and the detection end of the pressure sensor (6) extends to the detection port.

10. The automatic oil injection device according to claim 1, wherein the oil injection device further comprises a check valve (7), the check valve (7) is arranged on a communication pipeline between the oil pump and the oil storage cavity, and the check valve (7) is used for guiding the oil to flow from the oil pump to the oil storage cavity.