Automatic lubricating device

Abstract

The invention provides an automatic lubricating device which is used for lubricating a pneumatic screw motor, the automatic lubricating device comprises a lubricating oil tank, an oil suction atomization assembly, a pressure stabilizing pipeline and a main pipeline, the oil suction atomization assembly and the main pipeline are arranged in parallel, and the oil suction atomization assembly is communicated with the main pipeline; a part of compressed gas entering the main pipeline is shunted into the oil suction atomization assembly; a part of the structure of the oil suction atomization assembly is located in the lubricating oil tank, the oil suction atomization assembly sucks lubricating oil in the lubricating oil tank through the negative pressure effect and forms primary oil mist, and the primary oil mist enters the main pipeline and is mixed with the other part of compressed gas in the main pipeline to form lubricating oil mist. Lubricating oil mist is conveyed into the pneumatic screw motor through a main pipeline air outlet. One end of the pressure-stabilizing pipeline is close to the air inlet of the main pipeline and is communicated with the main pipeline; the other end of the pressure-stabilizing pipeline is communicated with the upper part of the lubricating oil tank. According to the technical scheme, the problems that in the prior art, a pneumatic screw motor is poor in lubricating effect and high in labor cost are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mine drilling, in particular to an automatic lubricating device. BACKGROUND

[0002] The pneumatic screw motor is widely used in the construction of directional drilling of soft coal seam in the coal mine, and needs continuous lubrication and cooling during operation to ensure normal work. The traditional lubrication method is manual oil injection, and during the process of connecting the drill pipe, the lubricating oil is intermittently injected into the pneumatic screw motor through the inner channel of the drill pipe.

[0003] However, the traditional oil injection method has low oil misting degree, most of the oil is retained and attached to the inner wall of the drill pipe, the lubrication uniformity is poor, the oil consumption is large, the lubricating oil is wasted seriously, and the lubrication is discontinuous, which reduces the lubrication and cooling effect of the pneumatic screw motor, and increases the labor cost. SUMMARY

[0004] The present application provides an automatic lubricating device to solve the problems of poor lubrication effect and high labor cost of the pneumatic screw motor in the prior art.

[0005] In order to solve the above problems, according to one aspect of the present application, an automatic lubricating device is provided for lubricating the pneumatic screw motor, the automatic lubricating device comprising a lubricating oil tank, an oil suction and atomization assembly, a pressure stabilizing pipeline and a main pipeline, the oil suction and atomization assembly and the main pipeline being connected in parallel and communicating with each other, a part of the compressed gas entering the main pipeline being diverted to the oil suction and atomization assembly; a part of the structure of the oil suction and atomization assembly is located in the lubricating oil tank, the oil suction and atomization assembly absorbs the lubricating oil in the lubricating oil tank by negative pressure, and forms primary oil mist, the primary oil mist enters the main pipeline and mixes with another part of the compressed gas in the main pipeline to form lubricating oil mist, the lubricating oil mist is delivered to the pneumatic screw motor through the gas outlet of the main pipeline; one end of the pressure stabilizing pipeline is close to the gas inlet of the main pipeline and communicates with the main pipeline, and the other end of the pressure stabilizing pipeline communicates with the upper part of the lubricating oil tank.

[0006] Further, the oil suction and atomization assembly comprises a jet atomizer, an atomization air inlet pipe and an atomization mixing pipe, one end of the atomization air inlet pipe, the jet atomizer and one end of the atomization mixing pipe are communicated in sequence, the other end of the atomization air inlet pipe communicates with one side of the main pipeline close to the gas inlet, and the other end of the atomization mixing pipe communicates with one side of the main pipeline away from the gas inlet, wherein the jet atomizer absorbs the lubricating oil in the lubricating oil tank by negative pressure and forms primary oil mist.

[0007] Further, the oil suction and atomization assembly further comprises an oil suction pipe and an oil filter, one end of the oil suction pipe is communicated with the jet atomizer, the other end of the oil suction pipe is connected with the oil filter, the oil filter and a part of the oil suction pipe are arranged in the lubricating oil tank, and the lubricating oil in the lubricating oil tank is used to enter the jet atomizer.

[0008] Further, the jet atomizer comprises an air inlet pipe, a nozzle and a mixing pipe connected in sequence, one end of the air inlet pipe is connected with the atomization air inlet pipe, a part of the nozzle is located in the cavity of the air inlet pipe, one end of the mixing pipe is connected with the atomization mixing pipe, and a part of the nozzle is located in the cavity of the mixing pipe; the mixing pipe is provided with an oil suction port for sucking the lubricating oil in the lubricating oil tank.

[0009] Further, the nozzle has a conical inner cavity, the nozzle comprises a conical pipe and an annular pressing plate, the annular pressing plate is arranged on the outer periphery of the conical pipe, one side of the annular pressing plate is connected with the air inlet pipe, and the other side of the annular pressing plate is connected with the mixing pipe.

[0010] Further, the mixing pipe comprises an oil suction cavity, a contraction cavity, a throat and a diffusion cavity communicated in sequence, a part of the nozzle is located in the oil suction cavity, and the outer wall of the oil suction cavity is provided with an oil suction port; the contraction cavity is a conical structure, the taper angle of the contraction cavity is 19°-23°, the large end of the contraction cavity is connected with the oil suction cavity; the diffusion cavity is a conical structure, the taper angle of the diffusion cavity is 8°-15°, the small end of the diffusion cavity is connected with one end of the throat, the throat is a cylindrical structure, the other end of the throat is connected with the small end of the contraction cavity, and the large end of the diffusion cavity is connected with the atomization mixing pipe.

[0011] Further, the air inlet pipe is a cylindrical structure, the inner diameters of the air inlet pipe and the oil suction cavity are D, the inner diameter of the throat is D / 4-D / 3, and the length of the throat is D.

[0012] Further, the oil suction pipe comprises a matching nut and an oil suction pipe body, the matching nut is fixedly connected with the upper end of the oil suction pipe body, the inner wall of the matching nut is threadedly connected with the jet atomizer, and a part of the oil suction pipe body is located in the lubricating oil tank and used to suck the lubricating oil in the lubricating oil tank.

[0013] Further, the oil filter comprises a core pipe and a filter shell, the filter shell is provided with an upper through hole and a plurality of sieve holes, the plurality of sieve holes are arranged on the outer periphery of the filter shell, the core pipe passes through the upper through hole, the core pipe is a hollow structure, and the core pipe and the oil suction pipe are communicated with each other.

[0014] Further, the main pipeline comprises a pressure stabilizing tee joint, a shunt tee joint, a mixing tee joint and a conveying pipeline, the pressure stabilizing tee joint, the shunt tee joint and the mixing tee joint are sequentially connected in series on the conveying pipeline, the pressure stabilizing tee joint is connected with the pressure stabilizing pipeline, the shunt tee joint is connected with the atomization air inlet pipe, and the mixing tee joint is connected with the atomization mixing pipe.

[0015] Furthermore, the automatic lubrication device also includes a control component connected to the main pipeline. The control component includes a controller, an electromagnetic throttle valve, an oil mist concentration sensor, and a power supply. The electromagnetic throttle valve is located in the delivery pipeline between the diversion tee and the mixing tee. The oil mist concentration sensor is located in the delivery pipeline after the mixing tee. The controller is electrically connected to the electromagnetic throttle valve, the oil mist concentration sensor, and the power supply, respectively.

[0016] In this design, one end of the pressure-stabilizing pipeline is located near the air inlet of the main pipeline and connected to it. The other end of the pressure-stabilizing pipeline is connected to the upper part of the lubricating oil tank, balancing the pressure within the tank and ensuring a stable and continuous supply of lubricating oil. A portion of the compressed gas entering the main pipeline passes through the oil atomizing component, which uses negative pressure to draw in lubricating oil from the tank, mixing it with the compressed gas to form a primary oil mist. This primary oil mist then flows into the main pipeline and mixes with the remaining compressed gas to form a lubricating oil mist. This configuration improves the atomization of the lubricating oil, ensuring uniform and continuous lubrication, optimizing lubricating oil utilization efficiency, preventing oil buildup on the walls, reducing oil waste, and ensuring the working efficiency and safety of the pneumatic screw motor. Furthermore, it eliminates the need for manual lubrication, saving labor costs. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of the automatic lubrication device provided in an embodiment of the present invention is shown;

[0019] Figure 2 A schematic diagram of the jet atomizer is shown;

[0020] Figure 3 A schematic diagram of the oil suction pipe is shown;

[0021] Figure 4 A schematic diagram of the oil filter structure is shown;

[0022] Figure 5 A schematic diagram of the lubricating oil tank is shown.

[0023] The above figures include the following reference numerals:

[0024] 1. Lubricating oil tank;

[0025] 11. Housing; 111. Oil inlet; 112. Oil drain outlet;

[0026] 12. Cover plate; 121. Center hole;

[0027] 2. Oil absorption and atomization component;

[0028] 21. Jet atomizer;

[0029] 211, Intake pipe; 2111, First flange; 2112, Second flange;

[0030] 212. Nozzle; 2121. Annular pressure plate; 2122. Conical tube;

[0031] 213. Mixing pipe; 2131. Oil suction chamber; 2132. Contraction chamber; 2133. Throat; 2134. Diffusion chamber; 2135. Third flange; 2136. Oil suction port; 2137. Fourth flange;

[0032] 22. Oil suction pipe; 221. Matching nut; 222. First sealing gasket; 223. Oil suction pipe body; 2231. Fixing body; 224. Second sealing gasket;

[0033] 23. Oil filter; 231. Core tube; 232. Filter housing; 2321. Screen holes;

[0034] 24. Atomizing air intake pipe; 25. Atomizing mixing pipe;

[0035] 3. Control components;

[0036] 31. Controller; 32. Electromagnetic throttle valve; 33. Oil mist concentration sensor; 34. Power supply; 35. Turbine generator;

[0037] 4. Pressure stabilizing pipeline;

[0038] 5. Main pipeline; 51. Pressure stabilizing tee; 52. Diversion tee; 53. Mixing tee; 54. Delivery pipeline. Detailed Implementation

[0039] The technical solutions in at least one embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. The following description of at least one embodiment is merely illustrative and is not intended to limit this application or its applications. Other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are all within the scope of protection of this application.

[0040] like Figures 1 to 5As shown, an embodiment of the present invention provides an automatic lubrication device for lubricating a pneumatic screw motor. The automatic lubrication device includes a lubricating oil tank 1, an oil atomizing component 2, a pressure stabilizing pipeline 4, and a main pipeline 5. The oil atomizing component 2 is connected in parallel with the main pipeline 5 and is also connected to the main pipeline 5. A portion of the compressed gas entering the main pipeline 5 is diverted to the oil atomizing component 2. A portion of the structure of the oil atomizing component 2 is located inside the lubricating oil tank 1. The oil atomizing component 2 draws in the lubricating oil in the lubricating oil tank 1 through negative pressure and forms a primary oil mist. The primary oil mist enters the main pipeline 5 and mixes with another portion of the compressed gas in the main pipeline 5 to form a lubricating oil mist. The lubricating oil mist is delivered to the pneumatic screw motor through the outlet of the main pipeline 5. One end of the pressure stabilizing pipeline 4 is close to the inlet of the main pipeline 5 and is connected to the main pipeline 5. The other end of the pressure stabilizing pipeline 4 is connected to the upper part of the lubricating oil tank 1.

[0041] In this design, one end of the pressure stabilizing pipeline 4 is close to the air inlet of the main pipeline 5 and connected to it. The other end of the pressure stabilizing pipeline 4 is connected to the upper part of the lubricating oil tank 1, balancing the pressure inside the lubricating oil tank 1 and ensuring a stable and continuous supply of lubricating oil. A portion of the compressed gas entering the main pipeline 5 passes through the oil atomizing component 2. The oil atomizing component 2 uses negative pressure to draw in the lubricating oil from the lubricating oil tank 1, mixing it with the compressed gas to form a primary oil mist. This primary oil mist then merges into the main pipeline 5 and mixes with the remaining compressed gas in the main pipeline 5 to form a lubricating oil mist. This configuration improves the atomization degree of the lubricating oil, ensures the uniformity and continuity of lubrication, optimizes the utilization efficiency of the lubricating oil, avoids lubricating oil residue on the walls, reduces lubricating oil waste, ensures the working efficiency and safety of the pneumatic screw motor, and eliminates the need for manual lubrication, saving labor costs.

[0042] like Figure 1 As shown, the oil atomizing assembly 2 includes a jet atomizer 21, an atomizing air inlet pipe 24, and an atomizing mixing pipe 25. One end of the atomizing air inlet pipe 24, one end of the jet atomizer 21, and one end of the atomizing mixing pipe 25 are connected in sequence. The other end of the atomizing air inlet pipe 24 is connected to the side of the main pipe 5 near the air inlet, and the other end of the atomizing mixing pipe 25 is connected to the side of the main pipe 5 away from the air inlet. The jet atomizer 21 draws in the lubricating oil in the lubricating oil tank 1 through negative pressure and forms the lubricating oil into primary oil mist.

[0043] A portion of the compressed air in the main pipe 5 is diverted to the jet atomizer 21 via the atomizing air inlet pipe 24. The jet atomizer 21 draws lubricating oil from the lubricating oil tank 1 under negative pressure. In the jet atomizer 21, the lubricating oil mixes with the compressed air and is converted into primary oil mist. The formed primary oil mist then enters the main pipe 5 through the atomizing mixing pipe 25. This design improves the atomization degree of the lubricating oil, ensuring that the lubricating oil is evenly distributed in the compressed gas, allowing the formed oil mist to fully contact the pneumatic screw motor, thereby improving the utilization rate and lubrication effect of the lubricating oil.

[0044] In some embodiments, the oil suction atomizing assembly 2 further includes an oil suction pipe 22 and an oil filter 23. One end of the oil suction pipe 22 is connected to the jet atomizer 21, and the other end of the oil suction pipe 22 is connected to the oil filter 23. The oil filter 23 and a portion of the oil suction pipe 22 are disposed in the lubricating oil tank 1 to allow the lubricating oil in the lubricating oil tank 1 to enter the jet atomizer 21.

[0045] The oil filter 23 and part of the oil suction pipe 22 are installed in the lubricating oil tank 1, and the two ends of the oil suction pipe 22 are connected to the jet atomizer 21 and the oil filter 23 respectively, so that the lubricating oil in the lubricating oil tank 1 can flow smoothly into the jet atomizer 21, ensuring the continuity and stability of the lubricating oil supply. The oil filter 23 can effectively remove impurities in the lubricating oil, ensuring the purity of the lubricating oil, preventing impurities from clogging the oil suction pipe 22, thereby affecting the atomization effect, improving the reliability and safety of the overall device, and reducing maintenance costs.

[0046] like Figure 2 As shown, the jet atomizer 21 includes an air inlet pipe 211, a nozzle 212, and a mixing pipe 213 connected in sequence. One end of the air inlet pipe 211 is connected to the atomizing air inlet pipe 24. A portion of the nozzle 212 is located inside the cavity of the air inlet pipe 211. One end of the mixing pipe 213 is connected to the atomizing mixing pipe 25. A portion of the nozzle 212 is located inside the cavity of the mixing pipe 213. The mixing pipe 213 has an oil suction port 2136, which is used to draw lubricating oil from the lubricating oil tank 1.

[0047] Compressed gas enters the jet atomizer 21 through the air inlet pipe 211 and is accelerated at the nozzle 212, forming a local negative pressure zone. The lubricating oil in the lubricating oil tank 1 is drawn into the mixing pipe 213 through the oil suction port 2136. The lubricating oil and compressed gas are fully mixed and atomized in the mixing pipe 213 to form a fine oil mist, i.e., the initial oil mist, which is then mixed with the remaining compressed gas in the main pipe 5 through the atomization mixing pipe 25. This arrangement improves the atomization degree of the lubricating oil and enhances the lubrication and cooling effect on the pneumatic screw motor.

[0048] Optionally, the intake pipe 211 has a first flange 2111 and a second flange 2112, which are respectively disposed at the ends of the intake pipe 211. One side of the first flange 2111 is connected to the atomizing intake pipe 24, and one side of the second flange 2112 abuts against one side of the annular pressure plate 2121. The mixing pipe 213 has a third flange 2135 and a fourth flange 2137, which are respectively disposed at the ends of the mixing pipe 213. The fourth flange 2137 is connected to the atomizing mixing pipe 25, and one side of the third flange 2135 abuts against the other side of the annular pressure plate 2121.

[0049] In some embodiments, the nozzle 212 has a conical inner cavity and includes a conical tube 2122 and an annular pressure plate 2121. The annular pressure plate 2121 is disposed on the outer periphery of the conical tube 2122. One side of the annular pressure plate 2121 is connected to the air intake pipe 211, and the other side of the annular pressure plate 2121 is connected to the mixing pipe 213.

[0050] The inner cavity of the nozzle 212 is conical, which increases the flow rate of compressed gas through the nozzle 212 and creates a local negative pressure area in the atomizer 21, which promotes the intake and atomization of lubricating oil.

[0051] The annular pressure plate 2121 facilitates the installation and disassembly of the nozzle 212, while ensuring the reliability and sealing of the connections between the components in the jet atomizer 21, preventing lubricating oil leakage during transmission, and ensuring the stability and efficiency of the nozzle 212 during use.

[0052] like Figure 2 As shown, the mixing tube 213 includes an oil suction chamber 2131, a contraction chamber 2132, a throat 2133, and a diffuser chamber 2134 connected in sequence. A portion of the nozzle 212 is located inside the oil suction chamber 2131, and an oil suction port 2136 is provided on the outer wall of the oil suction chamber 2131. The contraction chamber 2132 has a conical structure with a cone angle of 19° to 23°, and the larger end of the contraction chamber 2132 is connected to the oil suction chamber 2131. The diffuser chamber 2134 has a conical structure with a cone angle of 8° to 15°, and the smaller end of the diffuser chamber 2134 is connected to one end of the throat 2133. The throat 2133 has a cylindrical structure, and the other end of the throat 2133 is connected to the smaller end of the contraction chamber 2132. The larger end of the diffuser chamber 2134 is connected to the atomizing mixing tube 25.

[0053] The outer wall of the oil suction chamber 2131 is provided with an oil suction port 2136, which facilitates the mixing tube 213 to draw in lubricating oil from the lubricating oil tank 1. The contraction chamber 2132 has a conical structure with a cone angle of 19°~23°, and the large end of the contraction chamber 2132 is connected to the oil suction chamber 2131, which increases the flow velocity of the compressed gas and lubricating oil mixture. The throat 2133 is located between the contraction chamber 2132 and the diffuser 2134. The flow velocity of the compressed gas and lubricating oil mixture in the throat 2133 reaches its maximum value, while the pressure drops to its minimum, which further promotes the effect of the jet atomizer 21 in drawing in lubricating oil. The diffuser 2134 has a conical structure with a cone angle of 8°~15°, and the small end of the diffuser 2134 is connected to the throat 2133. The flow velocity of the compressed gas and lubricating oil mixture in the diffuser 2134 decreases and the pressure increases, thus realizing the atomization of the lubricating oil.

[0054] By utilizing the velocity and pressure changes of the compressed gas and lubricating oil mixture in the oil suction chamber 2131, the contraction chamber 2132, the throat 2133, and the diffusion chamber 2134, the process of lubricating oil being drawn from the lubricating oil tank 1 to the jet atomizer 21 is promoted. At the same time, under the Venturi effect, the lubricating oil is atomized, which improves the lubrication effect of the pneumatic screw motor and extends its service life.

[0055] This design improves the reliability of the connections between the components in the oil atomizing assembly 2, enhances the fluid sealing performance of the device, and ensures the lubrication performance of the automatic lubrication device.

[0056] In some embodiments, the intake pipe 211 has a cylindrical structure, the inner diameter of both the intake pipe 211 and the oil suction chamber 2131 is D, the inner diameter of the throat 2133 is D / 4 to D / 3, and the length of the throat 2133 is D.

[0057] This specific dimensional design optimizes the gas flow characteristics in the jet atomizer 21. The inner diameter of the throat 2133 is smaller than the inner diameter of the air inlet pipe 211 and the oil suction chamber 2131, which increases the flow rate of the compressed gas and lubricating oil mixture, reduces the pressure of the compressed gas and lubricating oil mixture, and promotes the intake and atomization of lubricating oil. This setting improves lubrication efficiency and ensures the lubrication effect of the automatic lubrication device on the pneumatic screw motor.

[0058] like Figure 3 As shown, the oil suction pipe 22 includes a mating nut 221 and an oil suction pipe body 223. The mating nut 221 is fixedly connected to the upper end of the oil suction pipe body 223. The inner wall of the mating nut 221 is threadedly connected to the jet atomizer 21. A part of the oil suction pipe body 223 is located inside the lubricating oil tank 1 and is used to draw lubricating oil from the lubricating oil tank 1.

[0059] This design ensures the stability and sealing of the oil suction process. The threaded connection between the nut 221 and the jet atomizer 21 increases the ease of assembly and the reliability of the connection. A part of the oil suction pipe 223 extends into the lubricating oil tank 1 to prevent air suction when the amount of oil in the lubricating oil tank 1 is low, thus ensuring the continuity and efficiency of the lubrication process.

[0060] Optionally, the oil suction pipe 22 further includes a first sealing gasket 222, a second sealing gasket 224, and a fixing body 2231. The fixing body 2231 is disposed on the oil suction pipe body 223, through which the oil suction pipe body 223 passes. The second sealing gasket 224 is disposed on the fixing body 2231, and the first sealing gasket 222 is located inside the mating nut 221. The fixing body 2231 is used to cooperate with the lubricating oil tank 1 to achieve a fixed connection between the oil suction pipe 22 and the lubricating oil tank 1. The second sealing gasket 224 is located between the fixing body 2231 and the upper end face of the lubricating oil tank 1, serving as a buffer and sealing agent, thereby improving the sealing performance of the oil suction pipe 22. The first sealing gasket 222 is located between the lower end face of the oil suction port 2136 and the inner bottom surface of the mating nut 221, serving as a buffer and sealing agent, thereby further improving the sealing performance of the oil suction pipe 22.

[0061] like Figure 4 As shown, the oil filter 23 includes a core tube 231 and a filter housing 232. The filter housing 232 has an upper through hole and multiple sieve holes 2321. The multiple sieve holes 2321 are arranged on the outer periphery of the filter housing 232. The core tube 231 passes through the upper through hole. The core tube 231 has a hollow structure and is connected to the oil suction pipe 22.

[0062] By using multiple sieve holes 2321 on the filter housing 232, impurities in the lubricating fluid sucked into the oil suction pipe 22 are reduced, ensuring the purity of the lubricating oil and preventing impurities in the lubricating fluid from clogging the automatic lubrication device, thus preventing damage to the equipment or reducing lubrication efficiency.

[0063] Meanwhile, the hollow core tube 231 provides a flow path for the lubricating oil, ensuring that the lubricating oil is smoothly drawn into the jet atomizer 21, thereby improving the working efficiency and reliability of the automatic lubrication device.

[0064] In some embodiments, the main pipeline 5 includes a pressure-stabilizing tee 51, a diversion tee 52, a mixing tee 53, and a delivery pipeline 54. The pressure-stabilizing tee 51, the diversion tee 52, and the mixing tee 53 are connected in series on the delivery pipeline 54. The pressure-stabilizing tee 51 is connected to the pressure-stabilizing pipeline 4, the diversion tee 52 is connected to the atomizing air inlet pipe 24, and the mixing tee 53 is connected to the atomizing mixing pipe 25.

[0065] In this embodiment, the main pipeline 5 is composed of a pressure stabilizing tee 51, a diversion tee 52, a mixing tee 53, and a conveying pipeline 54. The pressure stabilizing tee 51, the diversion tee 52, and the mixing tee 53 are connected in series on the conveying pipeline 54 to form an airflow distribution and mixing system.

[0066] The pressure-stabilizing tee 51 ensures pressure balance between the lubricating oil tank 1 and the main pipeline 5, guaranteeing a stable oil intake and improving the continuity and reliability of lubrication. The diverting tee 52 and the mixing tee 53 realize the conversion of lubricating oil into lubricating oil mist, improving the atomization degree of lubricating oil, increasing the utilization rate of lubricating oil, ensuring the lubrication efficiency of the automatic lubrication device, enhancing the working performance of the pneumatic screw motor, and extending the service life of the pneumatic screw motor.

[0067] like Figure 1 As shown, the automatic lubrication device also includes a control component 3, which is connected to the main pipeline 5. The control component 3 includes a controller 31, an electromagnetic throttle valve 32, an oil mist concentration sensor 33, and a power supply 34. The electromagnetic throttle valve 32 is located in the delivery pipeline 54 and between the diversion tee 52 and the mixing tee 53. The oil mist concentration sensor 33 is located in the delivery pipeline 54 and after the mixing tee 53. The controller 31 is electrically connected to the electromagnetic throttle valve 32, the oil mist concentration sensor 33, and the power supply 34.

[0068] The controller 31 is electrically connected to the electromagnetic throttle valve 32, the oil mist concentration sensor 33, and the power supply 34. The power supply 34 is used to supply power to the controller 31. The controller 31 transmits control signals to the electromagnetic throttle valve 32 and the oil mist concentration sensor 33 to adjust the opening and closing of the electromagnetic throttle valve 32 and the working state of the oil mist concentration sensor 33.

[0069] The oil mist concentration sensor 33 is installed in the delivery pipe 54 and located after the mixing tee 53. It is used to monitor the concentration of lubricating oil mist in the main pipe 5 in real time. When the concentration of lubricating oil mist deviates from the set value, the controller 31 can respond quickly and adjust the concentration of lubricating oil mist by adjusting the opening of the electromagnetic throttle valve 32 to ensure that the pneumatic screw motor is continuously and efficiently lubricated.

[0070] Optionally, the control component 3 also includes a turbine generator 35, which is located on the main pipe 5 and downstream of the oil mist concentration sensor 33, and is electrically connected to the power supply 34.

[0071] After the compressed gas in the main pipeline 5 enters the turbine generator 35, the turbine generator 35 converts the potential energy of the compressed gas into electrical energy and transmits it to the power source 34 to provide electrical energy to the power source 34.

[0072] When the opening of the electromagnetic throttle valve 32 increases, the flow rate of compressed gas entering the atomizing air intake pipe 24 decreases, reducing the negative pressure effect in the jet atomizer 21 and decreasing the amount of lubricating oil drawn into the jet atomizer 21, thus resulting in a lower concentration of lubricating oil mist. Conversely, when the opening of the electromagnetic throttle valve 32 decreases, the flow rate of compressed gas entering the atomizing air intake pipe 24 increases, enhancing the negative pressure effect in the jet atomizer 21 and increasing the amount of lubricating oil drawn into the jet atomizer 21, thus increasing the concentration of lubricating oil mist. This design avoids the instability caused by traditional manual lubrication and improves the automation level and working efficiency of the automatic lubrication device.

[0073] like Figure 5 As shown, the lubricating oil tank 1 includes a tank body 11 and a cover plate 12. The cover plate 12 is disposed above the tank body 11 and is fixedly connected to the tank body 11. The tank body 11 has an oil inlet 111 and an oil outlet 112. The oil inlet 111 is disposed on the upper end face of the tank body 11, and the oil outlet 112 is disposed on the side wall at the bottom of the tank body 11. The cover plate 12 has a central hole 121.

[0074] The housing 11 is used to store lubricating oil, and the cover plate 12 is used to seal the housing 11 to prevent external debris from entering the housing 11 and causing lubricating oil contamination. The oil inlet 111 is used to replenish lubricating oil to prevent the lubricating oil level in the housing 11 from being too low and affecting the lubrication effect. The oil drain port 112 is used to drain the residual lubricating oil in the housing 11 to prevent the residual lubricating oil in the housing 11 from deteriorating when the automatic lubrication device is not in use, thus ensuring the lubrication performance of the equipment.

[0075] The formula for calculating the flow rate of compressed air entering main pipe 5 is as follows:

[0076] ;

[0077] in, For the density of lubricating oil, The length of the oil suction pipe 22 The inner diameter of intake pipe 211 The inner diameter of the oil suction pipe 22 is... This is the inner diameter of the larynx 2133. air density, This refers to the concentration of lubricating oil mist.

[0078] The above descriptions are merely some embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0079] The technical features of the embodiments described above can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification.

[0080] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0081] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as exemplary only and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0082] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0083] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0084] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

Claims

1. An automatic lubrication device for lubricating a pneumatic screw motor, characterized in that, The automatic lubrication device includes a lubricating oil tank (1), an oil atomizing component (2), a pressure stabilizing pipeline (4), and a main pipeline (5). The oil atomizing component (2) and the main pipeline (5) are connected in parallel and communicate with each other. A portion of the compressed gas entering the main pipeline (5) is diverted to the oil atomizing component (2). A portion of the structure of the oil atomizing component (2) is located inside the lubricating oil tank (1). The oil atomizing component (2) draws in oil through negative pressure. Take the lubricating oil from the lubricating oil tank (1) and make the lubricating oil form a primary oil mist. The primary oil mist enters the main pipe (5) and mixes with another part of the compressed gas in the main pipe (5) to form a lubricating oil mist. The lubricating oil mist is delivered to the pneumatic screw motor through the air outlet of the main pipe (5). One end of the pressure stabilizing pipeline (4) is close to the air inlet of the main pipe (5) and is connected to the main pipe (5). The other end of the pressure stabilizing pipeline (4) is connected to the upper part of the lubricating oil tank (1).

2. The automatic lubrication device according to claim 1, characterized in that, The oil atomizing assembly (2) includes a jet atomizer (21), an atomizing air inlet pipe (24), and an atomizing mixing pipe (25). One end of the atomizing air inlet pipe (24), one end of the jet atomizer (21), and one end of the atomizing mixing pipe (25) are connected in sequence. The other end of the atomizing air inlet pipe (24) is connected to the side of the main pipe (5) near the air inlet. The other end of the atomizing mixing pipe (25) is connected to the side of the main pipe (5) away from the air inlet. The jet atomizer (21) draws in the lubricating oil in the lubricating oil tank (1) through negative pressure and makes the lubricating oil form the primary oil mist.

3. The automatic lubrication device according to claim 2, characterized in that, The oil suction atomizing assembly (2) also includes an oil suction pipe (22) and an oil filter (23). One end of the oil suction pipe (22) is connected to the jet atomizer (21), and the other end of the oil suction pipe (22) is connected to the oil filter (23). The oil filter (23) and a part of the oil suction pipe (22) are disposed in the lubricating oil tank (1) to allow the lubricating oil in the lubricating oil tank (1) to enter the jet atomizer (21).

4. The automatic lubrication device according to claim 2, characterized in that, The jet atomizer (21) includes an air inlet pipe (211), a nozzle (212), and a mixing pipe (213) connected in sequence. One end of the air inlet pipe (211) is connected to the atomizing air inlet pipe (24). A part of the nozzle (212) is located in the cavity of the air inlet pipe (211). One end of the mixing pipe (213) is connected to the atomizing mixing pipe (25). A part of the nozzle (212) is located in the cavity of the mixing pipe (213). The mixing pipe (213) has an oil suction port (2136) for sucking up the lubricating oil in the lubricating oil tank (1).

5. The automatic lubrication device according to claim 4, characterized in that, The nozzle (212) has a conical inner cavity. The nozzle (212) includes a conical tube (2122) and an annular pressure plate (2121). The annular pressure plate (2121) is disposed on the outer periphery of the conical tube (2122). One side of the annular pressure plate (2121) is connected to the air inlet pipe (211), and the other side of the annular pressure plate (2121) is connected to the mixing pipe (213).

6. The automatic lubrication device according to claim 4, characterized in that, The mixing tube (213) includes an oil suction chamber (2131), a contraction chamber (2132), a throat (2133), and a diffusion chamber (2134) connected in sequence. A portion of the nozzle (212) is located within the oil suction chamber (2131), and the oil suction port (2136) is formed on the outer wall of the oil suction chamber (2131). The contraction chamber (2132) has a conical structure with a cone angle of 19° to 23°. The large end is connected to the oil absorption chamber (2131); the diffusion chamber (2134) is a conical structure with a cone angle of 8°~15°; the small end of the diffusion chamber (2134) is connected to one end of the throat (2133); the throat (2133) is a cylindrical structure; the other end of the throat (2133) is connected to the small end of the contraction chamber (2132); and the large end of the diffusion chamber (2134) is connected to the atomizing mixing tube (25).

7. The automatic lubrication device according to claim 6, characterized in that, The intake pipe (211) has a cylindrical structure. The inner diameter of the intake pipe (211) and the oil suction chamber (2131) is D. The inner diameter of the throat (2133) is D / 4~D / 3. The length of the throat (2133) is D.

8. The automatic lubrication device according to claim 3, characterized in that, The oil suction pipe (22) includes a mating nut (221) and an oil suction pipe body (223). The mating nut (221) is fixedly connected to the upper end of the oil suction pipe body (223). The inner wall of the mating nut (221) is threadedly connected to the jet atomizer (21). A part of the oil suction pipe body (223) is located inside the lubricating oil tank (1) and is used to draw lubricating oil from the lubricating oil tank (1).

9. The automatic lubrication device according to claim 3, characterized in that, The oil filter (23) includes a core tube (231) and a filter housing (232). The filter housing (232) has an upper through hole and a plurality of sieve holes (2321). The plurality of sieve holes (2321) are disposed on the outer periphery of the filter housing (232). The core tube (231) passes through the upper through hole. The core tube (231) has a hollow structure and is interconnected with the oil suction pipe (22).

10. The automatic lubrication device according to claim 2, characterized in that, The main pipeline (5) includes a pressure stabilizing tee (51), a diversion tee (52), a mixing tee (53), and a delivery pipeline (54). The pressure stabilizing tee (51), the diversion tee (52), and the mixing tee (53) are connected in series on the delivery pipeline (54). The pressure stabilizing tee (51) is connected to the pressure stabilizing pipeline (4), the diversion tee (52) is connected to the atomizing air inlet pipe (24), and the mixing tee (53) is connected to the atomizing mixing pipe (25).

11. The automatic lubrication device according to claim 10, characterized in that, The automatic lubrication device also includes a control component (3), which is connected to the main pipeline (5). The control component (3) includes a controller (31), an electromagnetic throttle valve (32), an oil mist concentration sensor (33), and a power supply (34). The electromagnetic throttle valve (32) is located in the delivery pipeline (54) between the diversion tee (52) and the mixing tee (53). The oil mist concentration sensor (33) is located in the delivery pipeline (54) after the mixing tee (53). The controller (31) is electrically connected to the electromagnetic throttle valve (32), the oil mist concentration sensor (33), and the power supply (34).

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