Energy-saving cold dryer capable of filtering dust and removing oil and use method thereof

Abstract

The present invention discloses an energy-saving cold dryer capable of filtering dust and removing oil and a method for using the same, and relates to the technical field of cold dryers, including a filter pipe, a filter rack installed on the inner wall of the filter pipe, and a dust and oil filter installed on the inner wall of the filter rack. The present invention filters dust and removes oil from the gas that is about to enter the air intake pipe by setting the filter pipe, the filter rack and the dust and oil filter, thereby reducing the workload of the cold dryer, obtaining the pressure at both ends of the dust and oil filter through two wireless pressure sensors, and obtaining the pressure difference data through the pressure difference calculation module, when the pressure difference data to be detected exceeds a preset threshold, the microprocessor module sends an instruction to the PLC controller, and the PLC controller regulates the actuator to control the automatic replacement component to complete the automatic replacement of the filter pipe, thereby reducing the pollution of dust and oil mist to the cold dryer itself, improving the heat exchange efficiency of the equipment, and achieving the effect of energy saving and increasing the service life.

Description

Technical Field

[0001] The invention relates to the technical field of cold dryers, and in particular to an energy-saving cold dryer capable of filtering dust and removing oil, and a use method thereof. Background Art

[0002] Cold dryer is the abbreviation of refrigerated dryer. Cold dryer adopts new technology and belongs to the air source processing component in the pneumatic system. It uses refrigerant to exchange heat with compressed air. It can reduce the temperature of compressed air to the dew point temperature in the range of 2℃-10℃, analyze the water in the air and perform drying treatment.

[0003] The defects of the existing cold dryer are:

[0004] 1. Patent document US07766152B2 discloses a freeze dryer, but the above document lacks a dust filtering and oil removal device, so it is impossible to reduce the pollution of dust and oil mist to the freeze dryer, which easily leads to a decrease in heat exchange efficiency and fails to achieve the technical problem of energy saving and prolonging service life;

[0005] 2. Patent document JP2013117345A discloses a refrigeration dryer, but the above document has a technical problem that when the dust filter and oil removal filter is detected to be clogged, the dust filter and oil removal filter cannot be automatically and accurately replaced;

[0006] 3. Patent document JP2015108507A discloses a freeze dryer, but the above document has a complicated procedure for removing the filter screen used for filtering, and the technical problem of being unable to quickly complete the disassembly and repair of the filter screen pipeline;

[0007] 4. Patent document CN216845358U discloses a dust-filtering and oil-removing cold dryer. However, in the above document, a filter device is only installed at the inlet position, and no filter device is added at the outlet position, which easily causes dust and oil mist to still exist in the exhaust gas. Summary of the invention

[0008] The object of the present invention is to provide an energy-saving cold dryer capable of filtering dust and removing oil and a method of using the same, so as to solve the technical problems raised in the above-mentioned background technology.

[0009] To achieve the above object, the present invention provides the following technical solution: an energy-saving cold dryer capable of filtering dust and removing oil, comprising a filter pipe, a filter rack is installed on the inner wall of the filter pipe, a dust and oil filter is installed on the inner wall of the filter rack, a group of wireless pressure sensors are installed on the inner wall of the filter pipe, and the installation positions of the wireless pressure sensors are respectively on one side and the other side of the dust and oil filter;

[0010] The wireless pressure sensor is connected to a pressure difference calculation module via a wireless network, the pressure difference calculation module is connected to a threshold preset module via a bidirectional electrical connection, the pressure difference calculation module is electrically connected to a microprocessor module, the wireless pressure sensor is used to transmit the collected data to the pressure difference calculation module via WiFi transmission, and calculate the pressure difference of a group of wireless pressure sensors, when the pressure difference exceeds a preset threshold, it is determined that the filter is clogged, and the data is sent to the microprocessor module for processing;

[0011] The microprocessor module is electrically connected to a PLC controller, and the PLC controller is electrically connected to an actuator, and the actuator includes an automatic replacement component, and the automatic replacement component is used to automatically replace the filter pipe.

[0012] Preferably, the automatic replacement component includes a top plate, a protective shell is installed at the bottom of the top plate, an exhaust pipe is installed through one side of the top of the top plate, an intake pipe is installed through the other side of the top of the top plate, a slide groove is opened in the middle of the other side of the top of the top plate, a slider is installed on the inner wall of the slide groove, a threaded rod is installed through a thread on one side of the slider, and one end of the threaded rod passes through the inner wall of the slide groove to install a first servo motor, and one end of the first servo motor is installed on one side of the top plate.

[0013] Preferably, a support plate is installed on the top of the slider, a support frame is installed on one side of the top of the support plate, a bearing is installed on the inner wall of the support frame, a rotating disk is installed on the inner side of the bearing, a plurality of mounting holes are opened on one side of the rotating disk, and the inner wall of the mounting hole is movably connected to the outer wall of the filter pipe, an annular groove is opened on the other side of the outer wall of the rotating disk, a group of rollers are movably connected to the inner wall of the annular groove, and the bottom of the roller is installed on the other side of the top of the support plate, a rotation angle sensor is embedded in the axis of the rotating disk, and the rotation angle sensor is electrically connected to the microprocessor module.

[0014] Preferably, a first gear is installed in the middle of the outer wall of the rotating disk, a second gear is installed on the outer wall of the first gear, a mounting frame is movably connected to the outer wall of the second gear, a brake is installed on one side of the mounting frame, a first rotating rod is installed on the input end of the brake, and one end of the first rotating rod passes through one side of the mounting frame and is installed in the middle of one side of the second gear, a reducer is installed on the other end of the mounting frame, a second rotating rod is installed on the output end of the reducer, and one end of the second rotating rod passes through the other side of the mounting frame and is installed in the middle of the other side of the second gear, and a second servo motor is installed on the input end of the reducer.

[0015] Preferably, a first sealing gasket is installed on the inner wall of the output end of the filter pipe, and the inner wall of the first sealing gasket is installed at one end of the outer wall of the air inlet pipe, one end of the filter pipe is movably connected with a second sealing gasket, a fixing ring is installed on one side of the second sealing gasket, and the inner wall of the fixing ring is installed on the outer wall of the air inlet pipe, and a group of limiting holes are opened on the outer wall of the filter pipe, and the inner wall of the limiting hole is movably connected with a limiting block, the tail end of the outer wall of the limiting block is movably connected to the inner wall of the limiting groove, and the limiting groove is opened on the inner wall of the installation hole, the inner wall of the limiting groove is movably connected with a pressure spring, and one end of the pressure spring is movably connected to the other end of the limiting block, a rope is installed in the middle of the other end of the limiting block, and the other end of the rope passes through the inner wall of the limiting groove and a pulling block is installed, the outer wall of the rope is movably connected with a guide groove, and the guide groove is opened on one side of the rotating disk, and the front end of the inner wall of the guide groove is installed on the outer wall of the pulling block, the tail end of the inner wall of the guide groove is installed with a guide wheel, and the outer wall of the guide wheel is movably connected to the outer wall of the rope.

[0016] Preferably, a base is installed at the bottom of the protective shell, a plurality of ventilation holes are opened at the bottom of the front side of the protective shell, a fixing frame is installed at the bottom of the inner wall of the protective shell, a group of fans are installed on the inner wall of the fixing frame, and a compressor, a condenser, an evaporator and a filter assembly are respectively installed in the protective shell, and the compressor (48), the condenser (49), the evaporator (50) and the filter assembly are all electrically connected to the actuator (9).

[0017] Preferably, the compressor is used to compress the air sucked into the air intake pipe into high-pressure gas, and transport it to the condenser through a pipeline, cool the high-temperature and high-pressure gas discharged from the compressor, and condense the moisture therein into liquid water and discharge it through a first discharge pipe. The high-pressure gas after preliminary cooling is input into the evaporator through a pipeline, and the temperature of the high-pressure gas is further reduced, so that the remaining water and oil therein condense into liquid and are discharged through a second discharge pipe, and one end of the outer wall of the first discharge pipe and the second discharge pipe are both installed through the bottom of the back side of the protective shell, a circulating heat dissipation pipe is installed at one end of the condenser, the inner wall of the circulating heat dissipation pipe is filled with cooling water, a cooling box is installed at one end of the circulating heat dissipation pipe, and the bottom of the cooling box is installed on the inner bottom wall of the protective shell.

[0018] Preferably, the filtering assembly includes an oil removal filter and a fine dust collector, the oil removal filter is used to further remove residual oil mist components in the compressed air, the fine dust collector is used to further filter out tiny particulate matter that is difficult to detect with the naked eye, and the input end of the oil removal filter is movably connected to the output end of the evaporator through a pipeline, the output end of the oil removal filter is movably connected to the input end of the fine dust collector through a pipeline, and the output end of the fine dust collector is movably connected to the input end of the exhaust pipe through a pipeline.

[0019] Preferably, the working steps of the energy-saving cold dryer capable of filtering dust and removing oil are as follows:

[0020] S1. Filter dust and remove oil from the gas that will enter the intake pipe through the filter pipe, filter frame and dust and oil filter;

[0021] S2. The pressure at both ends of the dust and oil filter is obtained through two wireless pressure sensors, and the pressure difference data is obtained through the pressure difference calculation module. When the pressure difference data to be detected exceeds the preset threshold, the microprocessor module sends a command to the PLC controller, and the PLC controller controls the actuator to control the automatic replacement component to complete the automatic replacement of the filter pipe;

[0022] S3. The first sealing cushion and the second sealing cushion are used to improve the sealing effect of the filter pipe and the air intake pipe;

[0023] S4, by pulling the pull block to drive the rope to move, through the setting of the guide wheel, the rope movement can pull the limiting block out of the limiting hole and move it into the limiting groove, then the filter pipe can be taken out from the installation hole, so as to facilitate the disassembly, maintenance and cleaning of the filter pipe;

[0024] S5. The setting of the fan and the air vents is helpful to improve the air circulation efficiency in the protective shell, and then the cooling efficiency of the circulating heat dissipation pipe and the cooling water in the cooling box is improved through the fan. The oil removal filter and the fine dust collector in the filter assembly are used to further filter the gas to be discharged, thereby improving the cleanliness of the gas discharged from the exhaust pipe.

[0025] Preferably, the step S2 further includes the following steps:

[0026] S21. The first servo motor drives the threaded rod to rotate, thereby driving the slider and the support plate to move, thereby enabling the filter pipe to be separated from the air intake pipe. Through the setting of the reducer and the second servo motor, the reducer is used to reduce the rotation speed and increase the torque at the same time, thereby providing sufficient power. Through the position setting of the mounting holes, the angles between the four mounting holes are all 90 degrees. Therefore, the rotation angle of the rotating disk is monitored in real time through the rotation angle sensor. When the rotation angle reaches 90 degrees, the brake will lock the first gear, thereby locking the angle of the rotating disk, and then controlling the first servo motor to drive the threaded rod to rotate in the opposite direction, thereby connecting the filter pipe and the air intake pipe to each other, and automatically completing the installation of the filter pipe.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The present invention filters dust and removes oil from the gas that is about to enter the air intake pipe by setting a filter pipe, a filter frame and a dust and oil filter, thereby reducing the workload of the cold dryer. The pressures at both ends of the dust and oil filter are obtained through two wireless pressure sensors, and the pressure difference data is obtained through a pressure difference calculation module. When the pressure difference data to be detected exceeds a preset threshold, the microprocessor module sends a command to the PLC controller, and the PLC controller controls the actuator to control the automatic replacement component to complete the automatic replacement of the filter pipe, thereby reducing the pollution of dust and oil mist to the cold dryer itself, improving the heat exchange efficiency of the equipment, and achieving the effect of energy saving and increasing the service life;

[0029] 2. The present invention controls the first servo motor through the actuator to drive the threaded rod to rotate, thereby driving the slider and the support plate to move, thereby enabling the filter pipe to be separated from the air intake pipe. Through the arrangement of the reducer and the second servo motor, the reducer is used to reduce the rotation speed and increase the torque at the same time, thereby providing sufficient power. Through the position arrangement of the mounting holes, the angles between the four mounting holes are all 90 degrees. Therefore, the rotation angle of the rotating disk is monitored in real time through the rotation angle sensor. When the rotation angle reaches 90 degrees, the brake will lock the first gear, thereby locking the angle of the rotating disk, and then controlling the first servo motor to drive the threaded rod to rotate in the opposite direction, thereby connecting the filter pipe and the air intake pipe to each other, and automatically completing the installation of the filter pipe.

[0030] 3. The present invention is conducive to improving the sealing effect of the filter pipe and the air intake pipe by using the first sealing cushion and the second sealing cushion. By pulling the pull block to drive the rope to move, the rope movement can pull the limiting block out of the limiting hole and move it into the limiting groove through the setting of the guide wheel. At this time, the filter pipe can be taken out of the installation hole, thereby facilitating the disassembly, maintenance and cleaning of the filter pipe.

[0031] 4. The present invention is beneficial to improving the air circulation efficiency in the protective shell through the arrangement of the fan and the air vents, thereby improving the condenser when cooling the high-temperature and high-pressure gas, using the circulating cooling water to exchange heat with the high-temperature gas in the condenser to take away the heat, and improving the cooling efficiency of the circulating heat dissipation pipeline and the cooling water in the cooling box through the fan, and cooperating with the oil removal filter and the fine dust collector in the filter assembly to further filter the gas to be discharged, thereby improving the cleanliness of the gas discharged from the exhaust pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the system flow of the present invention;

[0033] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0034] Figure 3 For the present invention Figure 2Schematic diagram of the structure at A in the middle;

[0035] Figure 4 It is a schematic diagram of the mounting hole structure of the present invention;

[0036] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at B in the middle;

[0037] Figure 6 It is a schematic diagram of the front cross-sectional structure of the protective shell of the present invention;

[0038] Figure 7 It is a schematic diagram of the structure of the rotating disk of the present invention;

[0039] Figure 8 For the present invention Figure 7 Schematic diagram of the structure at C in the middle;

[0040] Fig. 9 It is a schematic diagram of the side cross-sectional structure of the protective shell of the present invention;

[0041] Fig.10 It is a schematic diagram of the workflow of the present invention.

[0042] In the figure: 1. filtration pipe; 2. filter frame; 3. dust and oil filter; 4. wireless pressure sensor; 5. pressure difference calculation module; 6. threshold preset module; 7. microprocessor module; 8. PLC controller; 9. actuator; 10. top plate; 11. protective shell; 12. exhaust pipe; 13. intake pipe; 14. slide; 15. slider; 16. threaded rod; 17. first servo motor; 18. support plate; 19. support frame; 20. bearing; 21. rotating disk; 22. mounting hole; 23. annular groove; 24. roller; 25. rotation angle sensor; 26. first gear; 27. second gear; 28. mounting frame; 29. ​​brake; 3 0. First rotating rod; 31. Speed ​​reducer; 32. Second rotating rod; 33. Second servo motor; 34. First sealing pad; 35. Second sealing pad; 36. Fixed ring; 37. Limiting hole; 38. Limiting block; 39. Limiting groove; 40. Pressure spring; 41. Rope; 42. Guide groove; 43. Guide wheel; 44. Base; 45. Air vent; 46. Fixed bracket; 47. Fan; 48. Compressor; 49. Condenser; 50. Evaporator; 52. First discharge pipe; 53. Second discharge pipe; 54. Oil removal filter; 55. Fine dust collector; 56. Circulating heat dissipation duct; 57. Cooling water; 58. Cooling box; 59. Pull block. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Example 1: Please refer to Figure 1 , an embodiment provided by the present invention: an energy-saving cold dryer capable of filtering dust and removing oil, comprising a filter pipe 1, a filter frame 2 is installed on the inner wall of the filter pipe 1, a dust and oil filter 3 is installed on the inner wall of the filter frame 2, a group of wireless pressure sensors 4 are installed on the inner wall of the filter pipe 1, and the installation positions of the wireless pressure sensors 4 are respectively on one side and the other side of the dust and oil filter 3;

[0047] The wireless pressure sensor 4 is connected to a pressure difference calculation module 5 via a wireless network, the pressure difference calculation module 5 is connected to a threshold preset module 6 via a bidirectional electrical connection, the pressure difference calculation module 5 is electrically connected to a microprocessor module 7, the wireless pressure sensor 4 is used to transmit the collected data to the pressure difference calculation module 5 via WiFi transmission, and calculate the pressure difference of a group of wireless pressure sensors 4, when the pressure difference exceeds the preset threshold, it is determined that the filter is clogged, and the data is sent to the microprocessor module 7 for processing;

[0048] The microprocessor module 7 is electrically connected to a PLC controller 8, and the PLC controller 8 is electrically connected to an actuator 9, and the actuator 9 includes an automatic replacement component, and the automatic replacement component is used to automatically replace the filter pipe 1;

[0049] Furthermore, by setting up the filtering pipe 1, the filter frame 2 and the dust and oil removal filter 3, the gas that will enter the intake pipe 13 is filtered and de-oiled, thereby reducing the workload of the cold dryer, and the pressures at both ends of the dust and oil removal filter 3 are obtained through two wireless pressure sensors 4, and the pressure difference data is obtained through the pressure difference calculation module 5. When the pressure difference data to be detected exceeds the preset threshold, the microprocessor module 7 sends an instruction to the PLC controller 8, and the PLC controller 8 controls the actuator 9 to control the automatic replacement component to complete the automatic replacement of the filtering pipe 1, thereby reducing the pollution of dust and oil mist to the cold dryer itself, improving the heat exchange efficiency of the equipment, and achieving the effect of energy saving and increasing service life.

[0050] Example 2: Please refer to Figure 2 , Figure 3 , Figure 7 and Figure 8 An embodiment of the present invention is as follows: an automatic replacement assembly includes a top plate 10, a protective shell 11 is installed at the bottom of the top plate 10, an exhaust pipe 12 is installed through one side of the top of the top plate 10, an air intake pipe 13 is installed through the other side of the top of the top plate 10, a slide groove 14 is opened in the middle of the other side of the top of the top plate 10, a slider 15 is installed on the inner wall of the slide groove 14, a threaded rod 16 is installed through one side of the slider 15, and one end of the threaded rod 16 penetrates the inner wall of the slide groove 14 to install a first servo motor 17, and one end of the first servo motor 17 is installed on one side of the top plate 10;

[0051] A support plate 18 is installed on the top of the slider 15, a support frame 19 is installed on one side of the top of the support plate 18, a bearing 20 is installed on the inner wall of the support frame 19, a rotating disk 21 is installed on the inner side of the bearing 20, a plurality of mounting holes 22 are opened on one side of the rotating disk 21, and the inner wall of the mounting hole 22 is movably connected to the outer wall of the filter pipe 1, a circular groove 23 is opened on the other side of the outer wall of the rotating disk 21, a group of rollers 24 are movably connected to the inner wall of the circular groove 23, and the bottom of the roller 24 is installed on the other side of the top of the support plate 18, a rotation angle sensor 25 is installed in the axis of the rotating disk 21, and the rotation angle sensor 25 is electrically connected to the microprocessor module 7;

[0052] A first gear 26 is installed at the middle of the outer wall of the rotating disk 21, a second gear 27 is installed at the outer wall of the first gear 26, a mounting frame 28 is movably connected to the outer wall of the second gear 27, a brake 29 is installed at one side of the mounting frame 28, a first rotating rod 30 is installed at the input end of the brake 29, and one end of the first rotating rod 30 passes through one side of the mounting frame 28 and is installed at the middle of one side of the second gear 27, a reducer 31 is installed at the other end of the mounting frame 28, a second rotating rod 32 is installed at the output end of the reducer 31, and one end of the second rotating rod 32 passes through the other side of the mounting frame 28 and is installed at the middle of the other side of the second gear 27, and a second servo motor 33 is installed at the input end of the reducer 31;

[0053] Furthermore, the first servo motor 17 is controlled by the actuator 9 to drive the threaded rod 16 to rotate, thereby driving the slider 15 and the support plate 18 to move, so that the filter pipe 1 can be separated from the air intake pipe 13. Through the setting of the reducer 31 and the second servo motor 33, the reducer 31 is used to reduce the rotation speed and increase the torque at the same time, thereby providing sufficient power. Through the position setting of the mounting holes 22, the angles between the four mounting holes 22 are all 90 degrees. Therefore, the rotation angle of the rotating disk 21 is monitored in real time through the rotation angle sensor 25. When the rotation angle reaches 90 degrees, the brake 29 will lock the first gear 26, thereby locking the angle of the rotating disk 21, and then controlling the first servo motor 17 to drive the threaded rod 16 to rotate in the opposite direction, thereby connecting the filter pipe 1 and the air intake pipe 13 to each other, and automatically completing the installation of the filter pipe 1.

[0054] Example 3: Please refer to Figure 2 , Figure 4 and Figure 5, an embodiment provided by the present invention: a first sealing gasket 34 is installed on the inner wall of the output end of the filter pipe 1, and the inner wall of the first sealing gasket 34 is installed on one end of the outer wall of the intake pipe 13, a second sealing gasket 35 is movably connected to one end of the filter pipe 1, a fixing ring 36 is installed on one side of the second sealing gasket 35, and the inner wall of the fixing ring 36 is installed on the outer wall of the intake pipe 13, a group of limiting holes 37 are opened on the outer wall of the filter pipe 1, and a limiting block 38 is movably connected to the inner wall of the limiting hole 37, and the tail end of the outer wall of the limiting block 38 is movably connected to the inner wall of the limiting groove 39, and the limiting groove 39 is opened On the inner wall of the mounting hole 22, the inner wall of the limiting groove 39 is movably connected with a pressure spring 40, and one end of the pressure spring 40 is movably connected to the other end of the limiting block 38, a rope 41 is installed in the middle of the other end of the limiting block 38, the other end of the rope 41 passes through the inner wall of the limiting groove 39 and is installed with a pull block 59, the outer wall of the rope 41 is movably connected with a guide groove 42, and the guide groove 42 is opened on one side of the rotating disk 21, and the front end of the inner wall of the guide groove 42 is installed on the outer wall of the pull block 59, and the tail end of the inner wall of the guide groove 42 is installed with a guide wheel 43, and the outer wall of the guide wheel 43 is movably connected to the outer wall of the rope 41;

[0055] Furthermore, the first sealing gasket 34 and the second sealing gasket 35 are helpful to improve the sealing effect of the filter pipe 1 and the air intake pipe 13. By pulling the pull block 59 to drive the rope 41 to move, and through the setting of the guide wheel 43, the movement of the rope 41 can pull the limiting block 38 out of the limiting hole 37 and move it to the limiting groove 39. At this time, the filter pipe 1 can be taken out from the installation hole 22, thereby facilitating the disassembly, maintenance and cleaning of the filter pipe 1.

[0056] Example 4: Please refer to Figure 6 and Fig. 9 , an embodiment provided by the present invention: a base 44 is installed at the bottom of the protective shell 11, a plurality of air holes 45 are opened at the bottom of the front of the protective shell 11, a fixing frame 46 is installed at the bottom of the inner wall of the protective shell 11, a group of fans 47 are installed on the inner wall of the fixing frame 46, a compressor 48, a condenser 49, an evaporator 50 and a filter assembly are installed in the protective shell 11, and the compressor 48, the condenser 49, the evaporator 50 and the filter assembly are all electrically connected to the actuator 9;

[0057] The compressor 48 is used to compress the air sucked into the air intake pipe 13 into high-pressure gas, and transport it to the condenser 49 through a pipeline, cool the high-temperature and high-pressure gas discharged from the compressor 48, and condense the water therein into liquid water and discharge it through the first discharge pipe 52. The high-pressure gas after preliminary cooling is input into the evaporator 50 through a pipeline, and the temperature of the high-pressure gas is further reduced, so that the remaining water and oil therein condense into liquid and are discharged through the second discharge pipe 53, and one end of the outer wall of the first discharge pipe 52 and the second discharge pipe 53 are both installed through the bottom of the back of the protective shell 11, and a circulating heat dissipation pipeline 56 is installed at one end of the condenser 49, and the inner wall of the circulating heat dissipation pipeline 56 is filled with cooling water 57, and a cooling box 58 is installed at one end of the circulating heat dissipation pipeline 56, and the bottom of the cooling box 58 is installed on the inner bottom wall of the protective shell 11;

[0058] The filter assembly includes an oil removal filter 54 and a fine dust collector 55. The oil removal filter 54 is used to further remove the residual oil mist components in the compressed air, and the fine dust collector 55 is used to further filter out the tiny particulate matter that is difficult to detect with the naked eye. The input end of the oil removal filter 54 is movably connected to the output end of the evaporator 50 through a pipeline, and the output end of the oil removal filter 54 is movably connected to the input end of the fine dust collector 55 through a pipeline, and the output end of the fine dust collector 55 is movably connected to the input end of the exhaust pipe 12 through a pipeline.

[0059] Furthermore, the provision of the fan 47 and the air vents 45 is helpful in improving the air circulation efficiency in the protective shell 11, thereby improving the condenser 49 when cooling the high-temperature and high-pressure gas. The cooling water 57 is used to circulate and exchange heat with the high-temperature gas in the condenser 49 to take away the heat. The fan 47 is used to improve the cooling efficiency of the circulating heat dissipation pipe 56 and the cooling water 57 in the cooling box 58. The oil removal filter 54 and the fine dust collector 55 in the filter assembly are used to further filter the gas to be discharged, thereby improving the cleanliness of the gas discharged from the exhaust pipe 12.

[0060] Example 5: Please refer to Fig.10 The present invention provides an embodiment: the working steps of the energy-saving cold dryer capable of filtering dust and removing oil are as follows:

[0061] S1, filtering dust and removing oil from the gas that is about to enter the air intake pipe 13 through the filter pipe 1, the filter frame 2 and the dust and oil filter 3;

[0062] S2. The pressures at both ends of the dust and oil filter 3 are obtained through two wireless pressure sensors 4, and the pressure difference data is obtained through the pressure difference calculation module 5. When the pressure difference data to be detected exceeds a preset threshold, the microprocessor module 7 sends a command to the PLC controller 8, and the PLC controller 8 controls the actuator 9 to control the automatic replacement component to complete the automatic replacement of the filter pipe 1;

[0063] S3, the first sealing gasket 34 and the second sealing gasket 35 are used to improve the sealing effect of the filter pipe 1 and the air intake pipe 13;

[0064] S4, by pulling the pull block 59 to drive the rope 41 to move, through the setting of the guide wheel 43, the rope 41 can move to pull the limiting block 38 out of the limiting hole 37 and move it into the limiting groove 39, then the filter pipe 1 can be taken out from the installation hole 22, so as to facilitate the disassembly, maintenance and cleaning of the filter pipe 1;

[0065] S5. The fan 47 and the air vents 45 are provided to improve the air circulation efficiency in the protective shell 11, and the fan 47 is used to improve the cooling efficiency of the circulating heat dissipation pipe 56 and the cooling water 57 in the cooling box 58. The oil removal filter 54 and the fine dust collector 55 in the filter assembly are used to further filter the gas to be discharged, thereby improving the cleanliness of the gas discharged from the exhaust pipe 12.

[0066] S2 also includes the following steps:

[0067] S21, the first servo motor 17 drives the threaded rod 16 to rotate, and then drives the slider 15 and the support plate 18 to move, so that the filter pipe 1 can be separated from the air intake pipe 13. Through the setting of the reducer 31 and the second servo motor 33, the reducer 31 is used to reduce the rotation speed and increase the torque at the same time, so as to provide sufficient power. Through the position setting of the mounting holes 22, the angles between the four mounting holes 22 are all 90 degrees. Therefore, the rotation angle of the rotating disk 21 is monitored in real time through the rotation angle sensor 25. When the rotation angle reaches 90 degrees, the brake 29 will lock the first gear 26, and then lock the angle of the rotating disk 21, and then control the first servo motor 17 to drive the threaded rod 16 to rotate in the opposite direction, so that the filter pipe 1 and the air intake pipe 13 are connected to each other, and the installation of the filter pipe 1 is automatically completed.

[0068] Working principle: through the setting of the filter pipe 1, the filter frame 2 and the dust and oil filter 3, the gas that will enter the intake pipe 13 is filtered and de-oiled, thereby reducing the workload of the cold dryer. Through two wireless pressure sensors 4, the pressure at both ends of the dust and oil filter 3 is obtained, and the pressure difference data is obtained through the pressure difference calculation module 5. When the pressure difference data to be detected exceeds the preset threshold, the microprocessor module 7 sends a command to the PLC controller 8, and the PLC controller 8 controls the actuator 9 to control the automatic replacement component to complete the automatic replacement of the filter pipe 1, thereby reducing the pollution of dust and oil mist to the cold dryer itself and improving the equipment. The heat exchange efficiency of the equipment is improved to achieve the effect of energy saving and prolonging the service life. The first servo motor 17 is controlled by the actuator 9 to drive the threaded rod 16 to rotate, thereby driving the slider 15 and the support plate 18 to move, so that the filter pipe 1 can be separated from the intake pipe 13. The reducer 31 and the second servo motor 33 are set. The reducer 31 is used to reduce the speed and increase the torque at the same time, thereby providing sufficient power. The position setting of the mounting holes 22, the angles between the four mounting holes 22 are all 90 degrees. Therefore, the rotation angle of the rotating disk 21 is monitored in real time by the rotation angle sensor 25. When the rotation angle reaches 90 degrees, the brake 2 9 will lock the first gear 26, and then lock the angle of the rotating disk 21, and then control the first servo motor 17 to drive the threaded rod 16 to rotate in the opposite direction, so that the filter pipe 1 and the air inlet pipe 13 are connected to each other, and the installation of the filter pipe 1 is automatically completed. The first sealing gasket 34 and the second sealing gasket 35 are conducive to improving the sealing effect of the filter pipe 1 and the air inlet pipe 13. By pulling the pull block 59 to drive the rope 41 to move, through the setting of the guide wheel 43, the movement of the rope 41 can pull the limiting block 38 out of the limiting hole 37 and move it into the limiting groove 39, then the filter pipe 1 can be removed from the installation hole 2 2, so as to facilitate the disassembly, maintenance and cleaning of the filter pipe 1. The arrangement of the fan 47 and the air vent 45 is conducive to improving the air circulation efficiency in the protective shell 11, thereby improving the condenser 49. When cooling the high-temperature and high-pressure gas, the cooling water 57 is used to circulate and exchange heat with the high-temperature gas in the condenser 49 to take away the heat, and the cooling efficiency of the cooling water 57 in the circulating heat dissipation pipe 56 and the cooling box 58 is improved by the fan 47. The oil removal filter 54 and the fine dust collector 55 in the filter assembly are used to further filter the gas to be discharged, so as to improve the cleanliness of the gas discharged from the exhaust pipe 12.

[0069] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An energy-saving cold dryer capable of filtering dust and removing oil, comprising a filter pipe (1), characterized in that: A filter rack (2) is installed on the inner wall of the filter pipe (1), a dust and oil removal filter (3) is installed on the inner wall of the filter rack (2), and a group of wireless pressure sensors (4) are installed on the inner wall of the filter pipe (1), and the installation positions of the wireless pressure sensors (4) are respectively on one side and the other side of the dust and oil removal filter (3); The wireless pressure sensor (4) is connected to a pressure difference calculation module (5) via a wireless network, the pressure difference calculation module (5) is connected to a threshold value preset module (6) via a bidirectional electrical connection, the pressure difference calculation module (5) is electrically connected to a microprocessor module (7), the wireless pressure sensor (4) is used to transmit the collected data to the pressure difference calculation module (5) via a WiFi transmission mode, and calculate the pressure difference of a group of wireless pressure sensors (4); when the pressure difference exceeds a preset threshold value, it is determined that the filter is clogged, and the data is sent to the microprocessor module (7) for processing; The microprocessor module (7) is electrically connected to a PLC controller (8), and the PLC controller (8) is electrically connected to an actuator (9), wherein the actuator (9) comprises an automatic replacement component, and the automatic replacement component is used to automatically replace the filter pipe (1); The automatic replacement component comprises a top plate (10), a protective shell (11) is installed at the bottom of the top plate (10), an exhaust pipe (12) is installed through one side of the top of the top plate (10), an intake pipe (13) is installed through the other side of the top of the top plate (10), a slide groove (14) is opened in the middle of the other side of the top of the top plate (10), a slider (15) is installed on the inner wall of the slide groove (14), a threaded rod (16) is installed through one side of the slider (15), one end of the threaded rod (16) is installed through the inner wall of the slide groove (14), and a first servo motor (17) is installed at one end of the threaded rod (16) through the inner wall of the slide groove (14), and one end of the first servo motor (17) is installed on one side of the top plate (10); A support plate (18) is mounted on the top of the slider (15), a support frame (19) is mounted on one side of the top of the support plate (18), a bearing (20) is mounted on the inner wall of the support frame (19), a rotating disk (21) is mounted on the inner side of the bearing (20), a plurality of mounting holes (22) are opened on one side of the rotating disk (21), and the inner walls of the mounting holes (22) are movably connected to the outer wall of the filter pipe (1), a circular groove (23) is opened on the other side of the outer wall of the rotating disk (21), a group of rollers (24) are movably connected to the inner wall of the circular groove (23), and the bottom of the rollers (24) is mounted on the other side of the top of the support plate (18), a rotation angle sensor (25) is mounted on the axis of the rotating disk (21), and the rotation angle sensor (25) is electrically connected to the microprocessor module (7).

2. The energy-saving cold dryer capable of filtering dust and removing oil according to claim 1, characterized in that: A first gear (26) is mounted on the middle of the outer wall of the rotating disk (21), a second gear (27) is mounted on the outer wall of the first gear (26), a mounting frame (28) is movably connected to the outer wall of the second gear (27), a brake (29) is mounted on one side of the mounting frame (28), a first rotating rod (30) is mounted on the input end of the brake (29), and one end of the first rotating rod (30) passes through one side of the mounting frame (28) and is mounted on the middle of one side of the second gear (27), a reducer (31) is mounted on the other end of the mounting frame (28), a second rotating rod (32) is mounted on the output end of the reducer (31), and one end of the second rotating rod (32) passes through the other side of the mounting frame (28) and is mounted on the middle of the other side of the second gear (27), and a second servo motor (33) is mounted on the input end of the reducer (31).

3. The energy-saving cold dryer capable of filtering dust and removing oil according to claim 1, characterized in that: A first sealing gasket (34) is installed on the inner wall of the output end of the filter pipe (1), and the inner wall of the first sealing gasket (34) is installed on one end of the outer wall of the air intake pipe (13); a second sealing gasket (35) is movably connected to one end of the filter pipe (1); a fixing ring (36) is installed on one side of the second sealing gasket (35), and the inner wall of the fixing ring (36) is installed on the outer wall of the air intake pipe (13); a group of limiting holes (37) are opened on the outer wall of the filter pipe (1); a limiting block (38) is movably connected to the inner wall of the limiting hole (37); the tail end of the outer wall of the limiting block (38) is movably connected to the inner wall of the limiting groove (39), and the limiting groove (39) is opened in the mounting hole (22). The inner wall of the limiting groove (39) is movably connected to a pressure spring (40), and one end of the pressure spring (40) is movably connected to the other end of the limiting block (38), a rope (41) is installed in the middle of the other end of the limiting block (38), the other end of the rope (41) passes through the inner wall of the limiting groove (39) and is installed with a pull block (59), the outer wall of the rope (41) is movably connected to a guide groove (42), and the guide groove (42) is opened on one side of the rotating disk (21), and the front end of the inner wall of the guide groove (42) is installed on the outer wall of the pull block (59), and the rear end of the inner wall of the guide groove (42) is installed with a guide wheel (43), and the outer wall of the guide wheel (43) is movably connected to the outer wall of the rope (41).

4. The energy-saving cold dryer capable of filtering dust and removing oil according to claim 1, characterized in that: A base (44) is installed at the bottom of the protective shell (11), a plurality of air holes (45) are opened at the bottom of the front side of the protective shell (11), a fixing frame (46) is installed at the bottom of the inner wall of the protective shell (11), and a group of fans (47) are installed on the inner wall of the fixing frame (46). A compressor (48), a condenser (49), an evaporator (50) and a filter assembly are installed in the protective shell (11), and the compressor (48), the condenser (49), the evaporator (50) and the filter assembly are all electrically connected to the actuator (9).

5. The energy-saving cold dryer capable of filtering dust and removing oil according to claim 4, characterized in that: The compressor (48) is used to compress the air sucked into the air intake pipe (13) into high-pressure gas, and transport it to the condenser (49) through the pipeline, cool the high-temperature and high-pressure gas discharged from the compressor (48), and condense the water therein into liquid water and discharge it through the first discharge pipe (52). The high-pressure gas after preliminary cooling is input into the evaporator (50) through the pipeline, and the temperature of the high-pressure gas is further reduced, so that the remaining water and oil therein condense into liquid and discharge it through the second discharge pipe (53), and one end of the outer wall of the first discharge pipe (52) and the second discharge pipe (53) are both installed through the bottom of the back side of the protective shell (11), and a circulating heat dissipation pipeline (56) is installed at one end of the condenser (49), and the inner wall of the circulating heat dissipation pipeline (56) is filled with cooling water (57). A cooling box (58) is installed at one end of the circulating heat dissipation pipeline (56), and the bottom of the cooling box (58) is installed on the inner bottom wall of the protective shell (11).

6. The energy-saving cold dryer capable of filtering dust and removing oil according to claim 5, characterized in that: The filter assembly comprises an oil removal filter (54) and a fine dust collector (55); the oil removal filter (54) is used to further remove residual oil mist components in the compressed air; the fine dust collector (55) is used to further filter out tiny particulate matter that is difficult to detect with the naked eye; the input end of the oil removal filter (54) is movably connected to the output end of the evaporator (50) through a pipeline; the output end of the oil removal filter (54) is movably connected to the input end of the fine dust collector (55) through a pipeline; and the output end of the fine dust collector (55) is movably connected to the input end of the exhaust pipe (12) through a pipeline.

7. A method for using an energy-saving cold dryer capable of filtering dust and removing oil according to any one of claims 1 to 6, characterized in that: The working steps of this energy-saving cold dryer that can filter dust and remove oil are as follows: S1, filtering and removing dust and oil from gas that is about to enter the air intake pipe (13) through the filter pipe (1), the filter frame (2) and the dust and oil filter (3); S2, obtaining the pressure at both ends of the dust and oil filter (3) through two wireless pressure sensors (4), and obtaining pressure difference data through a pressure difference calculation module (5); when the pressure difference data to be detected exceeds a preset threshold value, the microprocessor module (7) sends a command to a PLC controller (8), and the PLC controller (8) controls the actuator (9) to control the automatic replacement component to complete the automatic replacement of the filter pipe (1); S3, the first sealing cushion (34) and the second sealing cushion (35) are used to improve the sealing effect of the filter pipe (1) and the air intake pipe (13); S4, by pulling the pull block (59) to drive the rope (41) to move, through the setting of the guide wheel (43), the movement of the rope (41) can pull the limiting block (38) out of the limiting hole (37) and move it into the limiting groove (39), so that the filter pipe (1) can be taken out from the installation hole (22), thereby facilitating the disassembly, maintenance and cleaning of the filter pipe (1); S5. The provision of the fan (47) and the air vents (45) is conducive to improving the air circulation efficiency in the protective shell (11), thereby improving the cooling efficiency of the circulating heat dissipation pipeline (56) and the cooling water (57) in the cooling box (58) through the fan (47), and cooperating with the oil removal filter (54) and the fine dust collector (55) in the filter assembly to further filter the gas to be discharged, thereby improving the cleanliness of the gas discharged from the exhaust pipe (12).

8. The method for using the energy-saving cold dryer capable of filtering dust and removing oil according to claim 7, characterized in that: The step S2 also includes the following steps: S21, the first servo motor (17) drives the threaded rod (16) to rotate, thereby driving the slider (15) and the support plate (18) to move, thereby enabling the filter pipe (1) to be separated from the air intake pipe (13). By setting the reducer (31) and the second servo motor (33), the reducer (31) is used to reduce the rotation speed and increase the torque, thereby providing sufficient power. By setting the positions of the mounting holes (22), the angles between the four mounting holes (22) are all 90 degrees. Therefore, the rotation angle of the rotating disk (21) is monitored in real time by the rotation angle sensor (25). When the rotation angle reaches 90 degrees, the brake (29) locks the first gear (26), thereby locking the angle of the rotating disk (21), and then controlling the first servo motor (17) to drive the threaded rod (16) to rotate in the opposite direction, thereby connecting the filter pipe (1) to the air intake pipe (13), and automatically completing the installation of the filter pipe (1).

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