Pneumatic oil injection device and control method thereof

Abstract

The invention discloses a pneumatic oil injection device and a control method thereof, comprising an oil injection machine, an oil distributor, a control valve group and a controller, wherein the oil distributor is connected to the oil injection machine and the control valve group, and the controller is electrically connected to the oil injection machine and the control valve group. The controller controls the oil injection machine through a program to pump oil into the oil distributor, and the controller controls the oil distributor through a program to perform fixed-point or multi-point oil supply and lubrication on lubrication points of a used equipment in a timely and quantitative manner, thereby realizing partial oil supply and lubrication control and full oil supply and lubrication control, as well as sequential oil supply and lubrication control and simultaneous oil supply and lubrication control, with low manufacturing cost and high intelligence. When an abnormal situation occurs, automatic shutdown or automatic pressure relief can be realized, and abnormal indication can be realized through lights, thereby improving the running quality of the equipment and ensuring safety and reliability.

Description

Technical Field

[0001] The invention belongs to the technical field of grease lubrication machinery, and in particular relates to a pneumatic oil injection device and a control method thereof. Background Art

[0002] The oiling machine is an auxiliary equipment used to add lubricating oil to machines and other equipment during the industrial production process. It is an indispensable tool for industrial production. At present, the lubrication method for the concrete mixing host in the concrete mixing industry is basically to adopt a self-lubricating mode with an automatic oiling machine configured at both ends of the mixing host. The existing automatic oiling machine has a small single oil output and low oil output pressure. The oil output is not smooth or no oil is output if the oil pipe is long. Improper oil pipe arrangement or untimely grease replenishment can easily cause shaft seal oil shortage and shaft seal failure. It cannot flexibly adjust the amount of grease according to the different needs of each lubrication point during multi-point lubrication. The oil supply lubrication method is relatively simple and the manufacturing cost is high. Therefore, there is an urgent need for a lubrication device that can output a large amount of oil at a time, has a high oil output pressure, can be accurately adjusted and controlled according to the needs of different lubrication points, has multiple lubrication modes and low manufacturing cost. Summary of the invention

[0003] In order to overcome the deficiencies in the prior art, the purpose of the present invention is to provide a pneumatic oil injection device and its control method which have high single oil output pressure, large oil output, can perform timed fixed-point lubrication or timed multi-point lubrication, can flexibly adjust the amount of grease according to the different needs of the lubrication points, and have multiple lubrication modes, and have low manufacturing cost.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a pneumatic oil injection device, including an oil injection machine, an oil separator, a control valve group and a controller, the oil separator connects the oil injection machine and the control valve group, and the controller electrically connects the oil injection machine and the control valve group.

[0005] The oil injection machine is a pneumatic oil injection machine.

[0006] The oil distributor includes a reversing valve, which is multiple and connected side by side. The reversing valve is provided with multiple first oil outlets and multiple first valve core ports. A first main oil circuit and a first branch oil circuit are provided inside the reversing valve. The first branch oil circuit of the reversing valve is connected to the first main oil circuit of the reversing valve, and the first valve core port of the reversing valve is connected to the control valve group. The first main oil circuits of each reversing valve are connected.

[0007] The oil separator is an integral body provided with multiple second oil outlets and multiple second valve core ports. A second main oil circuit and a second branch oil circuit are provided inside the oil separator. The second branch oil circuit of the oil separator is connected to the second main oil circuit of the oil separator, and the second valve core port of the oil separator is connected to the control valve group.

[0008] The control valve group includes a solenoid valve, which is multiple and connected side by side. The solenoid valve is provided with multiple outlets and multiple drains. A main circuit and a branch circuit are provided inside the solenoid valve. The branch circuit of the solenoid valve is connected to the main circuit of the solenoid valve, and the outlet of the solenoid valve is connected to the oil separator. The main circuits of the various solenoid valves are connected.

[0009] The solenoid valve is a pneumatic solenoid valve.

[0010] The solenoid valve is a hydraulic solenoid valve.

[0011] The control valve group is provided with a pressure gauge, the pressure gauge is connected to the pressure relief valve, and the controller is electrically connected to the pressure gauge and the pressure relief valve.

[0012] The controller is a PLC controller.

[0013] A control method for a pneumatic oil injection device, including a partial oil supply lubrication control method and a full oil supply lubrication control method;

[0014] The partial oil supply lubrication control method comprises:

[0015] Step 1: The controller starts the oil injection machine through program control, and the oil injection machine pumps lubricating grease into the oil separator;

[0016] Step 2: The controller opens part of the outlets of the solenoid valve in the control valve group through program control, and the high-pressure air or hydraulic oil or hydraulic oil enters the corresponding valve core port on the oil distributor through the outlet;

[0017] Step 3: High-pressure air or hydraulic oil or hydraulic oil enters the oil separator through the valve core port, pushing the oil separator to open the corresponding oil outlet, and lubricating grease enters some lubrication points of the equipment through the oil outlet to perform lubrication operations;

[0018] Step 4: After the lubrication operation is completed, the controller closes the outlet of the solenoid valve in the control valve group and the oil injection machine through program control, and the partial oil supply lubrication ends;

[0019] The overall oil supply lubrication control method comprises:

[0020] Step 1: The controller starts the oil injection machine through program control, and the oil injection machine pumps lubricating grease into the oil separator;

[0021] Step 2: The controller opens all outlets of the solenoid valves in the control valve group through program control, and high-pressure air or hydraulic oil enters the corresponding valve core ports on the oil distributor through the outlets;

[0022] Step 3: High-pressure air or hydraulic oil enters the oil separator through the valve core port, pushing the oil separator to open the corresponding oil outlet, and lubricating grease enters various lubrication points of the equipment through the oil outlet to perform lubrication operations;

[0023] Step 4: After the lubrication operation is completed, the controller closes the outlet of the solenoid valve in the control valve group and the oil injection machine through program control, and all oil supply and lubrication are completed.

[0024] A control method for a pneumatic oil injection device, including a sequential oil supply lubrication control method and a simultaneous oil supply lubrication control method;

[0025] The sequential oil supply lubrication control method comprises:

[0026] Step 1: The controller starts the oil injection machine through program control, and the oil injection machine pumps lubricating grease into the oil separator;

[0027] Step 2: The controller opens the outlets of the solenoid valves in the control valve group in sequence through program control, and the high-pressure air or hydraulic oil enters the corresponding valve core ports on the oil distributor in sequence through the outlets;

[0028] Step 3: High-pressure air or hydraulic oil enters the oil separator through the valve core port, pushing the oil separator to open the corresponding oil outlets in sequence, and the lubricating grease enters the various lubrication points of the equipment in sequence through the oil outlets to perform lubrication operations;

[0029] Step 4: After the lubrication operation is completed, the controller closes the outlet of the solenoid valve in the control valve group and the oil injection machine through program control, and the oil supply and lubrication are completed in sequence;

[0030] The simultaneous oil supply lubrication control method comprises:

[0031] Step 1: The controller starts the oil injection machine through program control, and the oil injection machine pumps lubricating grease into the oil separator;

[0032] Step 2: The controller opens the outlet of the solenoid valve in the control valve group through program control at the same time, and the high-pressure air or hydraulic oil enters the corresponding valve core port on the oil distributor through the outlet at the same time;

[0033] Step 3: High-pressure air or hydraulic oil enters the oil separator through the valve core port, pushing the oil separator to open the corresponding oil outlets at the same time, and lubricating grease enters various lubrication points of the equipment through the oil outlets at the same time to perform lubrication operations;

[0034] Step 4: After the lubrication operation is completed, the controller closes the outlet of the solenoid valve in the control valve group and the oil injection machine through program control, and the oil supply and lubrication are completed at the same time.

[0035] The beneficial effects of the present invention are:

[0036] 1. The controller used is a PLC controller, which controls the oiling machine through the program to automatically add lubricating grease to the lubrication points of the equipment, which is highly economical.

[0037] 2. It has multiple lubrication modes, which can deliver lubricating grease to each lubrication point in a timely and quantitative manner according to the different needs of each lubrication point. At the same time, it can adjust the oil supply method and pumping times at any time according to the actual usage of each lubrication point of the equipment to meet its needs. It can effectively reduce the loss of lubricating grease and realize intelligent control of lubricating grease filling, with a high degree of intelligence.

[0038] 3. Compressed gas as the power source of pneumatic oiling machine is easy to obtain, easy to use, and has little pollution. It is energy-saving and environmentally friendly. The pneumatic oiling machine has a high single-time output of lubricating grease with high pressure and large flow, which can not only ensure smooth long-distance oil supply and lubrication, but also adapt to the layout of most oil pipes and meet the multi-point lubrication needs of the equipment. The oil separator has low manufacturing cost and good practicality.

[0039] 4. When an abnormal situation occurs, the pressure is lower or higher than the set range, and the machine will automatically shut down or release the pressure. The abnormality indication will be realized through the light, which will improve the operation quality of the equipment and make it safe and reliable.

[0040] In general, the present invention realizes large oil output, high oil output pressure, timed and quantitative lubrication of multiple lubrication points, diverse lubrication modes, high intelligence, low manufacturing cost, good practicality, safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural schematic diagram of the present invention;

[0042] Figure 2 This is a schematic diagram of the structure of the oil separator of the present invention;

[0043] Figure 3 for Figure 2 Schematic diagram of the AA section;

[0044] Figure 4 This is a schematic diagram of the structure of the control valve group of the present invention;

[0045] Figure 5 This is a schematic diagram of the connection between the oil separator and the control valve group of the present invention;

[0046] Figure 6 This is a schematic diagram of the structure of an oil separator according to Embodiment 2 of the present invention;

[0047] Figure 7 for Figure 6 Schematic diagram of the middle BB section;

[0048] Figure 8 It is a schematic diagram of the control system of the present invention;

[0049] In the figure: 1. box body, 2. oil injection machine, 3. oil supply main pipe, 4. oil distributor, 40. reversing valve, 41. first main oil circuit, 42. first oil outlet, 43. first branch oil circuit, 44. first valve core port, 45. first valve core, 46. second main oil circuit, 47. second oil outlet, 48. second branch oil circuit, 49. second valve core port, 410. second valve core, 5. oil supply branch pipe, 6. controller, 7. branch pipe, 8. control valve group, 80. solenoid valve, 81. main circuit, 82. branch, 83. outlet, 84. drain, 9. pressure gauge, 10. pressure relief valve. DETAILED DESCRIPTION

[0050] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings and preferred embodiments.

[0051] Embodiment 1:

[0052] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 8 As shown, a pneumatic oil injection device includes an oil injection machine 2, an oil distributor 4, a control valve group 8 and a controller 6. The oil injection machine 2 is a pneumatic oil injection machine, the controller 6 is a PLC controller, and a two-color indicator light is provided on the controller 6.

[0053] The oil distributor 4 is composed of four reversing valves 40 connected in parallel with each other. The number of reversing valves 40 can be increased or decreased according to the number of lubrication points of the equipment in use. It is economical and practical. Each reversing valve 40 is provided with two first valve core ports 44 and two first oil outlets 42. Each first valve core port 44 corresponds to one first oil outlet 42. The first oil outlets 42 are respectively connected to the oil supply branch pipes 5. The oil supply branch pipes 5 are composed of multiple lubricating oil pipes. The number of oil supply branch pipes 5 is equal to the number of first oil outlets 42. Each reversing valve 40 is provided with one first main oil circuit 41 and two first branch oil circuits 43. The first branch oil circuits 43 are respectively connected to the first main oil circuits 41. The first main oil circuits 41 of the four reversing valves 40 are connected. One end of the connected first main oil circuit 41 is connected to the oiling machine 2 through the oil supply main pipe 3, and the other end is blocked with a plug.

[0054] The control valve group 8 is composed of four solenoid valves 80 connected in parallel with each other. The number of the solenoid valves 80 is half the number of the first valve core ports 44 of the reversing valve 40 in the oil distributor 4. Each solenoid valve 80 is provided with two outlets 83 and two drain ports 84. Each drain port 84 corresponds to one outlet 83. Each solenoid valve 80 is provided with one main path 81 and two branch paths 82. The branch paths 82 are connected to the main paths 81 respectively. The main paths 81 of each solenoid valve 80 are connected. One end of the connected main path 81 is connected to the external pipeline, and the other end is blocked with a plug.

[0055] Each outlet 83 of the solenoid valve 80 in the control valve group 8 is connected to the first valve core port 44 of the corresponding reversing valve 40 in the oil distributor 4 through the branch pipe 7. The number of the branch pipes 7 is equal to the number of the first valve core port 44 of the reversing valve 40 in the oil distributor 4.

[0056] The solenoid valve 80 in the control valve group 8 is a pneumatic solenoid valve or a hydraulic solenoid valve.

[0057] A pressure gauge 9 is connected to the control valve group 8, and a pressure relief valve 10 is connected to the pressure gauge 9. The controller 6 is electrically connected to the pressure gauge 9 and the pressure relief valve 10. The pressure gauge 9 is used to monitor the pressure of the main path 81 entering the control valve group 8. When the pressure of the main path 81 in the control valve group 8 is higher than the pressure setting range, the controller 6 controls the green light in the two-color indicator light through a program to turn on, and at the same time opens the pressure relief valve 10 to relieve the pressure. When the pressure of the main path 81 in the control valve group 8 drops to the pressure setting range, the pressure relief valve 10 is closed, and the green light in the two-color indicator light goes out; when the pressure of the main path 81 in the control valve group 8 is lower than the pressure setting range, the controller 6 controls the red light in the two-color indicator light through a program to turn on, and at the same time turns off the oil injection machine 2. When the pressure of the main path 81 in the control valve group 8 reaches the pressure setting range, the oil injection machine 2 is turned on, and the red light in the two-color indicator light goes out, which can improve the operation quality of the equipment and is safe and reliable.

[0058] According to the different needs of each lubrication point of the equipment, the controller 6 controls the opening time and the pumping times of the oiling machine 2 through a program, so as to realize the timed and quantitative oil supply to the lubrication points of the equipment. The controller 6 controls the outlet 83 corresponding to the solenoid valve 80 in the control valve group 8 through a program, so as to realize the corresponding oil outlet in the oil distributor 4 to provide fixed-point or multi-point oil supply to the lubrication points of the equipment, with a high degree of intelligence.

[0059] The pneumatic oil injection device of the present invention is arranged on the box body 1, and can be moved to different use equipment as needed, and can also be directly installed on the use equipment, which is convenient, fast and has good versatility.

[0060] The control method of the pneumatic oil injection device includes a partial oil supply lubrication control method and a full oil supply lubrication control method.

[0061] Partial oil supply lubrication control method: compressed air enters the oiling machine 2 through the air pipe, the controller 6 controls the oiling machine 2 to start running through the program, the oiling machine 2 pumps the lubricating grease through the oil supply main pipe 3 to the first main oil circuit 41 of the reversing valve 40 in the oil distributor 4, the lubricating grease enters the first branch oil circuit 43 from the first main oil circuit 41, the high-pressure air or the hydraulic oil pumped by the external hydraulic station enters the main circuit 81 of the solenoid valve 80 in the control valve group 8 through the external pipeline, the high-pressure air or hydraulic oil enters the branch circuit 82 from the main circuit 81, the controller 6 controls any one or several circuits of the solenoid valve 80 in the control valve group 8 through the program to attract, the corresponding solenoid valve 80 valve opens, the branch circuit 82 is connected to the corresponding outlet 83, the high-pressure air or hydraulic oil enters the first branch circuit 43 from the branch circuit 82 through the corresponding outlet 83 through the branch pipe 7 A valve core port 44, high-pressure air or hydraulic oil enters the reversing valve 40 through the first valve core port 44, pushing the corresponding first valve core 45 to operate, so that the first branch oil path 43 is connected to the corresponding first oil outlet 42, and the lubricating grease enters the corresponding lubrication point of the equipment through the first branch oil path 43 through the corresponding first oil outlet 42 through the oil supply branch pipe 5 for lubrication operation. After the lubrication operation is completed, the controller controls the oiling machine 2 to stop running through the program, and the oiling machine 2 stops pumping lubricating grease. The controller 6 controls the solenoid valve 80 in the control valve group 8 through the program to disconnect, and the corresponding solenoid valve 80 valve is closed. The high-pressure air or hydraulic oil in the branch pipe 7 is discharged through the corresponding drain port 84, and the corresponding first valve core 45 in the reversing valve 40 is reset. The first branch oil path 43 is disconnected from the corresponding first oil outlet 42, and the partial oil supply lubrication control ends.

[0062] In the partial oil supply lubrication control method, the controller 6 controls the closure of any several circuits of the solenoid valves 80 in the control valve group 8 through program control. When the corresponding valves of the solenoid valves 80 are opened, the program control of the controller 6 can be used to open the valves of the corresponding solenoid valves 80 in sequence to achieve sequential oil supply lubrication control. The program control of the controller 6 can also be used to open the valves of the corresponding solenoid valves 80 at the same time to achieve simultaneous oil supply lubrication control.

[0063] The whole oil supply lubrication control method: compressed air enters the oiling machine 2 through the air pipe, the controller 6 controls the oiling machine 2 to start running through the program, the oiling machine 2 pumps the lubricating grease through the oil supply main pipe 3 to the first main oil circuit 41 of the reversing valve 40 in the oil distributor 4, the lubricating grease enters the first branch oil circuit 43 from the first main oil circuit 41, the high-pressure air or the hydraulic oil pumped by the external hydraulic station enters the main circuit 81 of the solenoid valve 80 in the control valve group 8 through the external pipeline, the high-pressure air or hydraulic oil enters the branch circuit 82 from the main circuit 81, the controller 6 controls the solenoid valve 80 in the control valve group 8 through the program to close, the solenoid valve 80 valves are all opened, the branch circuits 82 are connected to the corresponding outlets 83, and the high-pressure air or hydraulic oil enters the reversing valve 40 in the oil distributor 4 through the branch circuit 7 via the corresponding outlet 83. The first valve core port 44, high-pressure air or hydraulic oil enters the reversing valve 40 through the first valve core port 44, pushing the first valve core 45 to operate, so that the first branch oil path 43 is connected to the first oil outlet 42, and the lubricating grease enters the corresponding lubrication point on the use equipment through the first branch oil path 43 through the first oil outlet 42 through the oil supply branch pipe 5 for lubrication operation. After the lubrication operation is completed, the controller controls the oiling machine 2 to stop running through the program, and the oiling machine 2 stops pumping lubricating grease. The controller 6 controls the solenoid valves 80 in the control valve group 8 to disconnect through the program, and the solenoid valves 80 are all closed. The high-pressure air or hydraulic oil in the branch pipe 7 is discharged through the corresponding drain port 84, and the first valve core 45 in the reversing valve 40 is completely reset, and the first branch oil path 43 is completely disconnected from the first oil outlet 42, and all oil supply and lubrication control is completed.

[0064] In the full oil supply lubrication control method, the controller 6 controls all the solenoid valves 80 in the control valve group 8 through program control to be energized. When all the valves of the solenoid valves 80 are opened, the program control of the controller 6 can be used to open the valves of all the solenoid valves 80 in sequence to achieve sequential oil supply lubrication control. The program control of the controller 6 can also be used to open the valves of all the solenoid valves 80 at the same time to achieve simultaneous oil supply lubrication control.

[0065] Embodiment 2:

[0066] The difference from Example 1 is that the control method of the pneumatic oil injection device includes a sequential oil supply lubrication control method and a simultaneous oil supply lubrication control method.

[0067] Sequential oil supply and lubrication control method: compressed air enters the oiling machine 2 through the air pipe, the controller 6 controls the oiling machine 2 to start running through the program, the oiling machine 2 pumps the lubricating grease through the oil supply main pipe 3 to the first main oil circuit 41 of the reversing valve 40 in the oil distributor 4, the lubricating grease enters the first branch oil circuit 43 from the first main oil circuit 41, the high-pressure air or the hydraulic oil pumped by the external hydraulic station enters the main circuit 81 of the solenoid valve 80 in the control valve group 8 through the external pipeline, the high-pressure air or hydraulic oil enters the branch circuit 82 from the main circuit 81, the controller 6 controls any or all of the solenoid valves 80 in the control valve group 8 through the program to be attracted in sequence, the corresponding solenoid valves 80 are opened in sequence, the branch circuits 82 are connected to the corresponding outlets 83, the high-pressure air or hydraulic oil enters the first valve of the reversing valve 40 in the oil distributor 4 through the branch circuit 7 via the corresponding outlet 83 from the branch circuit 82. The core port 44, high-pressure air or hydraulic oil enters the reversing valve 40 through the first valve core port 44 in turn, and pushes the corresponding first valve core 45 to operate in turn, so that the first branch oil path 43 is connected to the corresponding first oil outlet 42, and the lubricating grease enters the corresponding lubrication point of the using equipment through the oil supply branch pipe 5 from the first branch oil path 43 through the corresponding first oil outlet 42 in turn for lubrication operation. After the lubrication operation is completed, the controller controls the oiling machine 2 to stop running through the program, and the oiling machine 2 stops pumping lubricating grease. The controller 6 controls the solenoid valve 80 in the control valve group 8 to disconnect through the program, and the corresponding solenoid valve 80 valve is closed, and the high-pressure air or hydraulic oil in the branch pipe 7 is discharged through the corresponding drain port 84, and the corresponding first valve core 45 in the reversing valve 40 is reset, and the first branch oil path 43 is disconnected from the corresponding first oil outlet 42, and the oil supply and lubrication control is ended in turn.

[0068] Simultaneous oil supply and lubrication control method: compressed air enters the oiling machine 2 through the air pipe, the controller 6 controls the oiling machine 2 to start running through the program, the oiling machine 2 pumps the lubricating grease through the oil supply main pipe 3 to the first main oil circuit 41 of the reversing valve 40 in the oil distributor 4, the lubricating grease enters the first branch oil circuit 43 from the first main oil circuit 41, the high-pressure air or the hydraulic oil pumped by the external hydraulic station enters the main circuit 81 of the solenoid valve 80 in the control valve group 8 through the external pipeline, the high-pressure air or hydraulic oil enters the branch circuit 82 from the main circuit 81, the controller 6 controls any or all of the solenoid valves 80 in the control valve group 8 through the program to be simultaneously attracted, the corresponding solenoid valves 80 are opened at the same time, the branch circuits 82 are connected to the corresponding outlets 83 respectively, and the high-pressure air or hydraulic oil enters the first valve of the reversing valve 40 in the oil distributor 4 through the branch circuit 7 via the corresponding outlet 83. The core port 44, high-pressure air or hydraulic oil enters the reversing valve 40 through the first valve core port 44 at the same time, and at the same time pushes the corresponding first valve core 45 to operate, so that the first branch oil path 43 is connected to the corresponding first oil outlet 42, and the lubricating grease enters the corresponding lubrication point of the using equipment through the first branch oil path 43 through the corresponding first oil outlet 42 and the oil supply branch pipe 5 at the same time for lubrication operation. After the lubrication operation is completed, the controller controls the oiling machine 2 to stop running through the program, and the oiling machine 2 stops pumping lubricating grease. The controller 6 controls the solenoid valve 80 in the control valve group 8 through the program to disconnect, and the corresponding solenoid valve 80 valve is closed. The high-pressure air or hydraulic oil in the branch pipe 7 is discharged through the corresponding drain port 84, and the corresponding first valve core 45 in the reversing valve 40 is reset. The first branch oil path 43 is disconnected from the corresponding first oil outlet 42, and the oil supply and lubrication control is ended at the same time.

[0069] Embodiment 3:

[0070] like Figure 6 and Figure 7 As shown, the difference from Example 1 is that the oil separator 4 is an integral body, and the oil separator 4 is provided with eight second oil outlets 47 and eight second valve core ports 49, each second valve core port 49 corresponds to one second oil outlet 47, and the second oil outlets 47 are respectively connected to the oil supply branch pipe 5, and the oil separator 4 is provided with one second main oil circuit 46 and eight second branch oil circuits 48 inside, and the second branch oil circuits 48 are respectively connected to the second main oil circuit 46, and one end of the second main oil circuit 46 in the oil separator 4 is connected to the oil injection machine 2 through the oil supply main pipe 3, and the other end is blocked with a plug.

[0071] Each outlet 83 of the solenoid valve 80 in the control valve group 8 is connected to the second valve core port 49 on the corresponding oil distributor 4 through the branch pipe 7 .

[0072] Partial oil supply lubrication control method: compressed air enters the oiling machine 2 through the air circuit, the controller 6 controls the oiling machine 2 to start running through the program, the oiling machine 2 pumps the lubricating grease through the oil supply main pipe 3 to the second main oil circuit 46 in the oil distributor 4, the lubricating grease enters the second branch oil circuit 48 from the second main oil circuit 46, the high-pressure air or the hydraulic oil pumped by the external hydraulic station enters the main circuit 81 of the solenoid valve 80 in the control valve group 8 through the external pipeline, the high-pressure air or hydraulic oil enters the branch circuit 82 from the main circuit 81, the controller 6 controls any one or several circuits of the solenoid valve 80 in the control valve group 8 through the program to attract, the corresponding solenoid valve 80 valve opens, the branch circuit 82 is connected to the corresponding outlet 83, the high-pressure air or hydraulic oil enters the second valve of the oil distributor 4 from the branch circuit 82 through the corresponding outlet 83 through the branch pipe 7 The core port 49, high-pressure air or hydraulic oil enters the oil distributor 4 through the second valve core port 49, pushing the second valve core 410 to operate, so that the second oil branch path 48 is connected to the second oil outlet 49, and the lubricating grease enters the corresponding lubrication point of the equipment through the second oil branch path 48 through the second oil outlet 49 through the oil supply branch pipe 5 for lubrication operation. After the lubrication operation is completed, the controller controls the oiling machine 2 to stop running through the program, and the oiling machine 2 stops pumping lubricating grease. The controller 6 controls the corresponding solenoid valve 80 in the control valve group 8 to disconnect through the program, and the corresponding solenoid valve 80 valve is closed. The high-pressure air or hydraulic oil in the branch pipe 7 is discharged through the corresponding drain port 84, and the corresponding second valve core 410 in the oil distributor 4 is reset, and the second oil branch path 48 is disconnected from the corresponding second oil outlet 47, and the partial oil supply lubrication control ends.

[0073] In the partial oil supply lubrication control method, the controller 6 controls the closure of any several circuits of the solenoid valves 80 in the control valve group 8 through program control. When the corresponding solenoid valves 80 are opened, the program control of the controller 6 can be used to open the valves of the corresponding solenoid valves 80 in sequence to achieve sequential oil supply lubrication control. The program control of the controller 6 can also be used to open the valves of the corresponding solenoid valves 80 at the same time to achieve simultaneous oil supply lubrication control.

[0074] The whole oil supply lubrication control method is as follows: compressed air enters the oiling machine 2 through the air pipe, the controller 6 controls the oiling machine 2 to start running through the program, the oiling machine 2 pumps the lubricating grease to the second main oil circuit 46 in the oil distributor 4 through the oil supply main pipe 3, the lubricating grease enters the second branch oil circuit 48 from the second main oil circuit 46, the high-pressure air or the hydraulic oil pumped by the external hydraulic station enters the main circuit 81 of the solenoid valve 80 in the control valve group 8 through the external pipeline, the high-pressure air or hydraulic oil enters the branch circuit 82 from the main circuit 81, the controller 6 controls the solenoid valves 80 in the control valve group 8 to be all sucked in through the program, the corresponding solenoid valves 80 are all opened, the branch circuits 82 are respectively connected to the corresponding outlets 83, the high-pressure air or hydraulic oil enters the second valve core port 49 of the oil distributor 4 through the branch pipe 7 from the branch circuit 82 via the corresponding outlet 83, and the high-pressure air or hydraulic oil enters the second valve core port 49 of the oil distributor 4 through the branch pipe 7. The compressed air or hydraulic oil enters the oil distributor 4 through the second valve core port 49, pushing the second valve core 410 to operate, so that the second oil branch path 48 is connected to the second oil outlet 49, and the lubricating grease enters the corresponding lubrication point of the equipment through the second oil branch path 48 through the second oil outlet 49 through the oil supply branch pipe 5 for lubrication operation. After the lubrication operation is completed, the controller controls the oiling machine 2 to stop running through the program, and the oiling machine 2 stops pumping lubricating grease. The controller 6 controls the solenoid valves 80 in the control valve group 8 to disconnect through the program, and the corresponding solenoid valves 80 are all closed. The high-pressure air or hydraulic oil in the branch pipe 7 is discharged through the corresponding drain port 84, and the corresponding second valve cores 410 in the oil distributor 4 are all reset, and the second oil branch path 48 is disconnected from all connections with the corresponding second oil outlet 47, and all oil supply and lubrication control is ended.

[0075] In the full oil supply lubrication control method, the controller 6 controls all the solenoid valves 80 in the control valve group 8 through program control to be energized. When all the valves of the solenoid valves 80 are opened, the program control of the controller 6 can be used to open the valves of all the solenoid valves 80 in sequence to achieve sequential oil supply lubrication control. The program control of the controller 6 can also be used to open the valves of all the solenoid valves 80 at the same time to achieve simultaneous oil supply lubrication control.

[0076] Embodiment 4:

[0077] The difference from Example 3 is that the control method of the pneumatic oil injection device includes a sequential oil supply lubrication control method and a simultaneous oil supply lubrication control method.

[0078] Sequential oil supply and lubrication control method: compressed air enters the oiling machine 2 through the air pipe, the controller 6 controls the oiling machine 2 to start running through the program, the oiling machine 2 pumps the lubricating grease through the oil supply main pipe 3 to the second main oil circuit 46 in the oil distributor 4, the lubricating grease enters the second branch oil circuit 48 from the second main oil circuit 46, the high-pressure air or the hydraulic oil pumped by the external hydraulic station enters the main circuit 81 of the solenoid valve 80 in the control valve group 8 through the external pipeline, the high-pressure air or hydraulic oil enters the branch circuit 82 from the main circuit 81, the controller 6 controls any or all of the solenoid valves 80 in the control valve group 8 through the program to be attracted in sequence, the corresponding solenoid valves 80 are opened in sequence, the branch circuits 82 are connected to the corresponding outlets 83 respectively, the high-pressure air or hydraulic oil enters the second valve of the oil distributor 4 from the branch circuit 82 through the corresponding outlet 83 through the branch pipe 7 in sequence The core port 49, high-pressure air or hydraulic oil enters the oil distributor 4 through the second valve core port 49, and pushes the second valve core 410 to operate in turn, so that the second oil branch 48 is connected to the second oil outlet 49, and the lubricating grease enters the corresponding lubrication points of the equipment through the second oil branch 48 and the second oil outlet 49 in turn through the oil supply branch pipe 5 for lubrication operation. After the lubrication operation is completed, the controller controls the oiling machine 2 to stop running through the program, and the oiling machine 2 stops pumping lubricating grease. The controller 6 controls the corresponding solenoid valve 80 in the control valve group 8 to disconnect through the program, and the corresponding solenoid valve 80 valve is closed. The high-pressure air or hydraulic oil in the branch pipe 7 is discharged through the corresponding drain port 84, and the corresponding second valve core 410 in the oil distributor 4 is reset, and the second oil branch 48 is disconnected from the corresponding second oil outlet 47, and the oil supply and lubrication control is ended in turn.

[0079] Simultaneous oil supply and lubrication control method: compressed air enters the oiling machine 2 through the air pipe, the controller 6 controls the oiling machine 2 to start running through the program, the oiling machine 2 pumps the lubricating grease through the oil supply main pipe 3 to the second main oil circuit 46 in the oil distributor 4, the lubricating grease enters the second branch oil circuit 48 from the second main oil circuit 46, the high-pressure air or the hydraulic oil pumped by the external hydraulic station enters the main circuit 81 of the solenoid valve 80 in the control valve group 8 through the external pipeline, the high-pressure air or hydraulic oil enters the branch circuit 82 from the main circuit 81, the controller 6 controls any or all of the solenoid valves 80 in the control valve group 8 through the program to be simultaneously attracted, the corresponding solenoid valves 80 are opened at the same time, the branch circuits 82 are connected to the corresponding outlets 83 respectively, and the high-pressure air or hydraulic oil enters the second valve of the oil distributor 4 from the branch circuit 82 through the corresponding outlet 83 through the branch pipe 7 at the same time. The core port 49, high-pressure air or hydraulic oil enters the oil distributor 4 through the second valve core port 49, and at the same time pushes the second valve core 410 to operate, so that the second oil branch path 48 is connected to the second oil outlet 49, and the lubricating grease enters the corresponding lubrication point of the equipment through the second oil branch path 48 through the second oil outlet 49 and the oil supply branch pipe 5 for lubrication operation. After the lubrication operation is completed, the controller controls the oiling machine 2 to stop running through the program, and the oiling machine 2 stops pumping lubricating grease. The controller 6 controls the corresponding solenoid valve 80 in the control valve group 8 to disconnect through the program, and the corresponding solenoid valve 80 valve is closed. The high-pressure air or hydraulic oil in the branch pipe 7 is discharged through the corresponding drain port 84, and the corresponding second valve core 410 in the oil distributor 4 is reset, and the second oil branch path 48 is disconnected from the corresponding second oil outlet 47, and the oil supply and lubrication control is ended.

[0080] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pneumatic oil injection device, Features: It includes an oil injection machine, an oil separator, a control valve group and a controller, wherein the oil separator is connected to the oil injection machine and the control valve group, and the controller is electrically connected to the oil injection machine and the control valve group; The oil distributor comprises a reversing valve, wherein the reversing valve is multiple and connected in parallel with each other, the reversing valve is provided with multiple first oil outlets and multiple first valve core ports, the reversing valve is provided with a first main oil circuit and a first branch oil circuit inside, the first branch oil circuit of the reversing valve is connected to the first main oil circuit of the reversing valve, the first valve core port of the reversing valve is connected to the control valve group, and the first main oil circuits of the reversing valves are connected; The oil separator is a whole with multiple second oil outlets and multiple second valve core ports. The oil separator is provided with a second main oil circuit and a second branch oil circuit inside. The second branch oil circuit of the oil separator is connected to the second main oil circuit of the oil separator, and the second valve core port of the oil separator is connected to the control valve group. The control valve group includes a solenoid valve, which is multiple and connected in parallel. The solenoid valve is provided with multiple outlets and multiple drains. The solenoid valve is provided with a main path and a branch path. The branch path of the solenoid valve is connected to the main path of the solenoid valve, and the outlet of the solenoid valve is connected to the oil separator. The main paths of the various solenoid valves are connected. The control valve group is connected with a pressure gauge, and the pressure gauge is connected with a pressure relief valve. The controller is electrically connected to the pressure gauge and the pressure relief valve. The pressure gauge is used to monitor the pressure of the main road entering the control valve group. When the pressure of the main road in the control valve group is higher than the pressure setting range, the controller controls the green light in the two-color indicator light to turn on through a program, and opens the pressure relief valve to relieve pressure. When the pressure of the main road in the control valve group drops to the pressure setting range, the pressure relief valve is closed, and the green light in the two-color indicator light goes out; when the pressure of the main road in the control valve group is lower than the pressure setting range, the controller controls the red light in the two-color indicator light to turn on through a program, and closes the oil injection machine. When the pressure of the main road in the control valve group reaches the pressure setting range, the oil injection machine is turned on, and the red light in the two-color indicator light goes out.

2. The pneumatic oil injection device according to claim 1, Features: The oil injection machine is a pneumatic oil injection machine.

3. The pneumatic oil injection device according to claim 1, Features: The solenoid valve is a pneumatic solenoid valve.

4. The pneumatic oil injection device according to claim 1, Features: The solenoid valve is a hydraulic solenoid valve.

5. A control method using the pneumatic oil injection device according to any one of claims 1 to 4, Features: Including partial oil supply lubrication control method and full oil supply lubrication control method; The partial oil supply lubrication control method comprises: Step 1: The controller starts the oil injection machine through program control, and the oil injection machine pumps lubricating grease into the oil separator; Step 2: The controller opens part of the outlets of the solenoid valve in the control valve group through program control, and the high-pressure air or hydraulic oil or hydraulic oil enters the corresponding valve core port on the oil distributor through the outlet; Step 3: High-pressure air or hydraulic oil or hydraulic oil enters the oil separator through the valve core port, pushing the oil separator to open the corresponding oil outlet, and lubricating grease enters some lubrication points of the equipment through the oil outlet to perform lubrication operations; Step 4: After the lubrication operation is completed, the controller closes the outlet of the solenoid valve in the control valve group and the oil injection machine through program control, and the partial oil supply lubrication ends; The overall oil supply lubrication control method comprises: Step 1: The controller starts the oil injection machine through program control, and the oil injection machine pumps lubricating grease into the oil separator; Step 2: The controller opens all outlets of the solenoid valves in the control valve group through program control, and high-pressure air or hydraulic oil enters the corresponding valve core ports on the oil distributor through the outlets; Step 3: High-pressure air or hydraulic oil enters the oil separator through the valve core port, pushing the oil separator to open the corresponding oil outlet, and lubricating grease enters various lubrication points of the equipment through the oil outlet to perform lubrication operations; Step 4: After the lubrication operation is completed, the controller closes the outlet of the solenoid valve in the control valve group and the oil injection machine through program control, and all oil supply and lubrication are completed.

6. A control method using the pneumatic oil injection device according to any one of claims 1 to 4, Features: It includes a sequential oil supply lubrication control method and a simultaneous oil supply lubrication control method; The sequential oil supply lubrication control method comprises: Step 1: The controller starts the oil injection machine through program control, and the oil injection machine pumps lubricating grease into the oil separator; Step 2: The controller opens the outlets of the solenoid valves in the control valve group in sequence through program control, and the high-pressure air or hydraulic oil enters the corresponding valve core ports on the oil distributor in sequence through the outlets; Step 3: High-pressure air or hydraulic oil enters the oil separator through the valve core port, pushing the oil separator to open the corresponding oil outlets in sequence, and the lubricating grease enters the various lubrication points of the equipment in sequence through the oil outlets to perform lubrication operations; Step 4: After the lubrication operation is completed, the controller closes the outlet of the solenoid valve in the control valve group and the oil injection machine through program control, and the oil supply and lubrication are completed in sequence; The simultaneous oil supply lubrication control method comprises: Step 1: The controller starts the oil injection machine through program control, and the oil injection machine pumps lubricating grease into the oil separator; Step 2: The controller opens the outlet of the solenoid valve in the control valve group through program control at the same time, and the high-pressure air or hydraulic oil enters the corresponding valve core port on the oil distributor through the outlet at the same time; Step 3: High-pressure air or hydraulic oil enters the oil separator through the valve core port, pushing the oil separator to open the corresponding oil outlets at the same time, and lubricating grease enters various lubrication points of the equipment through the oil outlets at the same time to perform lubrication operations; Step 4: After the lubrication operation is completed, the controller closes the outlet of the solenoid valve in the control valve group and the oil injection machine through program control, and the oil supply and lubrication are completed at the same time.

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