CN114321448A - Mechanical double-line reversing valve and piston coating process - Google Patents
Mechanical double-line reversing valve and piston coating process Download PDFInfo
- Publication number
- CN114321448A CN114321448A CN202210139803.XA CN202210139803A CN114321448A CN 114321448 A CN114321448 A CN 114321448A CN 202210139803 A CN202210139803 A CN 202210139803A CN 114321448 A CN114321448 A CN 114321448A
- Authority
- CN
- China
- Prior art keywords
- small hole
- piston
- communicated
- small
- sliding groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 22
- 230000001105 regulatory effect Effects 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 11
- 239000013077 target material Substances 0.000 claims description 33
- 238000000151 deposition Methods 0.000 claims description 24
- 150000004767 nitrides Chemical class 0.000 claims description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 15
- 238000005121 nitriding Methods 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 6
- 238000007747 plating Methods 0.000 claims description 6
- 230000037452 priming Effects 0.000 claims description 6
- 229910001149 41xx steel Inorganic materials 0.000 claims description 3
- 229910019974 CrSi Inorganic materials 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 230000008021 deposition Effects 0.000 claims description 3
- 238000010891 electric arc Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 2
- 239000004519 grease Substances 0.000 abstract description 76
- 230000001050 lubricating effect Effects 0.000 abstract description 14
- 238000005461 lubrication Methods 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Images
Landscapes
- Actuator (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
A mechanical double-line reversing valve and a piston coating process belong to the technical field of reversing valves; by arranging the first piston, the second piston and the third piston, when the lubricating pump works, grease is pumped into the reversing valve from the lubricating pump, the grease enters one end of the double-line distributor through the reversing valve, the unilateral pressure of the lubricating system can be increased after the grease fills one end of the double-line distributor, the pressure regulating valve overflows to push the inner piston to work after the pressure is increased to the set pressure of the pressure regulating valve of the reversing valve, so that the reversing function is realized, the grease enters the other end of the double-line distributor from the reversing valve, the previously filled end can overflow the grease from the oil outlet of the double-line distributor to play a lubricating role in the process that the other end of the double-line distributor is filled with the grease, and the redundant grease returns to the lubricating pump through the oil return position of the reversing valve to realize the circulating reciprocating work; and a proximity switch sensor is arranged at the right end of the third piston sliding groove, so that the action times of the piston can be monitored, and quantitative accurate lubrication with fixed times can be achieved.
Description
Technical Field
The invention belongs to the technical field of reversing valves, and particularly relates to a mechanical double-line reversing valve and a piston coating process.
Background
At present, the lubrication of the wind driven generator is mainly performed by a progressive and pressure relief type lubrication system, but the failure rate is higher; there are also a few double-line lubrication systems, the mode of electromagnetic valve reversing and positive and negative rotation load reversing of a motor in a pump is used, and a new fault point is formed after partial fault points are solved due to the problem of the design principle, so that a high-reliability double-line lubrication system is urgently needed in the market at present.
Disclosure of Invention
The invention mainly solves the technical problems in the prior art and provides a mechanical double-line reversing valve and a piston plating process.
The technical problem of the invention is mainly solved by the following technical scheme: a mechanical double-line reversing valve and a piston coating process comprise a valve body, wherein an oil return port is arranged at the upper end of the valve body, the upper ends of the left side and the right side of the valve body are respectively provided with an oil inlet, a communicating flow passage is arranged between the two oil inlets, the bottom of the valve body is provided with two oil outlets, the interior of the valve body is sequentially provided with a first piston chute, a second piston chute, a pressure regulating cavity and a third piston chute from top to bottom, a first piston is arranged in the first piston chute, a second piston is arranged in the second piston chute, a third piston is arranged in the third piston chute, two ends of the first piston chute, two ends of the second piston chute and the right end of the third piston chute are respectively provided with a piston plug, the left end of the third piston chute is provided with a proximity switch sensor, the left end of the pressure regulating cavity is provided with a pressure regulating valve, and the right end of the pressure regulating cavity is provided with a plug.
Preferably, the front end face of the valve body is provided with a first small hole, a second small hole, a third small hole, a fourth small hole, a fifth small hole, a sixth small hole, a seventh small hole and an eighth small hole, the rear end face of the valve body is provided with a twenty-eight small hole, a twenty-nine small hole, a thirty-eleven small hole, a thirty-two small hole, a thirty-three small hole, a thirty-fourteen small hole, a thirty-five small hole, a thirty-six small hole, a thirty-five small hole, a thirty-seven small hole, a forty-twelve small hole, a nineteen small hole, a ten small hole, a 1 small hole and a forty-ten small hole, the upper end face of the valve body is provided with a nineteen small hole, a twenty-one small hole, a twenty-twelve small hole, a twenty-thirteen small hole and a twenty-four small hole, the lower end face of the valve body is provided with a first small hole, a 2, a second small hole, a thirty small hole, a thirty hole, a small hole and a small hole are arranged on the lower end face of the valve body, Thirteen small holes, fourteen small holes, fifteen small holes, sixteen small holes, seventeen small holes and eighteen small holes.
Preferably, the small hole is communicated with the twenty-seventh small hole and the third piston chute, the second small hole is communicated with the tenth small hole and the third piston chute, the fifth small hole is communicated with the twenty-fourth small hole and the second piston chute, the third small hole is communicated with the seventeenth small hole and the second piston chute, the sixth small hole is communicated with the twenty-fourth small hole and the pressure regulating cavity, the fourth small hole is communicated with the eighteen small hole and the second piston chute, the seventh small hole is communicated with the twenty-fourth small hole and the communicating runner, and the eighth small hole is communicated with the twenty-fourth small hole and the first piston chute.
Preferably, the small hole twenty eight is communicated with the small hole thirteen and the first piston sliding groove, the small hole forty is communicated with the small hole twenty one and the first piston sliding groove, the small hole thirty-nine is communicated with the small hole twenty and the oil return port, the small hole thirty-eight is communicated with the small hole nineteen and the first piston chute, the small hole thirty-one is communicated with the small hole I2 and the first piston chute, the small hole thirty-nine is communicated with the small hole twenty-one and the second piston chute, the small hole thirty-seven is communicated with the small hole nineteen and the second piston chute, the small hole thirty-five is communicated with the small hole I1 and the pressure regulating cavity, the small hole thirty-four is communicated with the small hole twenty-one and the first piston chute, the small hole thirty-two is communicated with the small hole fourteen and the first piston chute, the small hole thirty-three is communicated with the small hole nineteen and the first piston sliding groove, the small hole twenty-nine is communicated with the small hole nine and the small hole sixteen, and the small hole thirty is communicated with the small hole twenty-six and the small hole fifteen.
Preferably, the small hole twenty five is communicated with the small hole nineteen, the small hole twenty and the small hole twenty one, the small hole forty two is communicated with the small hole twenty two, the small hole twenty six is communicated with the small hole one 2, and the small hole twenty seven is communicated with the small hole seventeen.
The small hole forty-one is communicated with the small hole twenty-three, the small hole ten is communicated with the small hole eighteen, the small hole one 1 is communicated with the small hole fourteen, and the small hole nine is communicated with the small hole; and inclined holes are arranged among the small holes forty-two, the small holes forty-two and the second piston sliding groove for communication.
The small hole twenty-two and the small hole twenty-three are communicated with the first piston chute, and the small hole fifteen and the small hole sixteen are communicated with the third piston chute.
A piston plating process of a mechanical double-line reversing valve comprises the following steps:
(1) purifying the surface of the piston;
(2) igniting the single metal target to generate cold field induced arc discharge, and depositing a single metal priming layer on the surface of the piston;
(3) gradually introducing nitrogen, depositing a single nitride transition layer with gradually increased nitrogen content on the single metal priming layer, and continuously depositing a single nitride coating;
(4) igniting the multi-element target material, gradually increasing the cathode current of the multi-element target material, and depositing a multi-element nitride transition layer with gradually increased metal content on the single nitride coating; and finally, depositing a multi-element nitride coating with fixed alloy content.
The process of claim 6, wherein in the step (2), the vacuum degree in the vacuum chamber is controlled to be 1.02 to 1.38Pa, and the piston bias is adjusted to-17 to-23V.
After nitrogen is introduced in the step (3), the bias voltage of the piston is adjusted to-30 to-40V; depositing a single nitride transition layer until the vacuum degree is maintained at 4-6 Pa, and then continuing to deposit a single nitride coating; maintaining the cathode current when the cathode current is increased to 60-80A, and depositing a multi-nitride coating; finishing the process after 5-20 h of deposition; opening the vacuum cavity to take out the piston after the piston is cooled to be lower than 150 ℃; before the step (1), carrying out nitriding treatment and surface grinding treatment after nitriding treatment; or, the surface grinding treatment is directly carried out without nitriding treatment to remove non-loose microstructures and ensure the bonding force of the plating layer; the single metal target in the step (2) is a Cr target; the multi-element target material in the step (4) is a CrAl target material, a CrMo target material, a CrW target material, a CrB target material, CrSi or CrTi target material; the addition amount of Al, Mo, W, B, Si or Ti in the multi-element target material is 5-50% atm; the number ratio of the cathode arc sources of the single metal target material to the cathode arc sources of the multi-element target material is 2:3 or 3: 2.
The invention has the following beneficial effects: by arranging the first piston, the second piston and the third piston, when the lubricating pump works, grease is pumped into the reversing valve from the lubricating pump, the grease enters one end of the double-line distributor through the reversing valve, the unilateral pressure of the lubricating system can be increased after the grease fills one end of the double-line distributor, the pressure regulating valve overflows to push the inner piston to work after the pressure is increased to the set pressure of the pressure regulating valve of the reversing valve, so that the reversing function is realized, the grease enters the other end of the double-line distributor from the reversing valve, the previously filled end can overflow the grease from the oil outlet of the double-line distributor to play a lubricating role in the process that the other end of the double-line distributor is filled with the grease, and the redundant grease returns to the lubricating pump through the oil return position of the reversing valve to realize the circulating reciprocating work; a proximity switch sensor is arranged at the right end of the third piston chute, can monitor the action times of the piston, and is connected with a sensor cable to a controller in the pump for controlling the reversing times of the reversing valve; thereby reaching the quantitative accurate lubrication of fixed times.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a piston I, a piston II, a piston III and a piston plug according to the present invention;
FIG. 3 is a schematic view of one configuration of the valve body of the present invention;
FIG. 4 is a schematic three-dimensional view of the valve body of the present invention;
fig. 5 is a schematic structural diagram of a hole position layout of the valve body of the invention.
In the figure: 1. a first small hole; 2. a second small hole; 3. a third small hole; 4. a fourth small hole; 5. a fifth small hole; 6. a sixth small hole; 7. a small hole seven; 8. eighth, small holes; 9. nine small holes; 10. ten small holes; 11. a first small hole 1; 12. a first small hole 2; 13. thirteen small holes; 14. fourteen small holes; 15. fifteen holes; 16. sixteen small holes; 17. seventeen small holes; 18. eighteen small holes; 19. nineteen small holes; 20. twenty small holes; 21. twenty one small hole; 22. twenty-two pores; 23. twenty-three holes; 24. twenty-four holes; 25. twenty five small holes; 26. twenty six small holes; 27. twenty seven small holes; 28. twenty-eight small holes; 29. twenty nine small holes; 30. thirty small holes; 31. thirty-one small holes; 32. thirty-two small holes; 33. thirty-three small holes; 34. thirty-four holes; 35. thirty-five small holes; 36. thirty-six small holes; 37. thirty-seven small holes; 38. thirty-eight small holes; 39. thirty-nine small holes; 40. forty apertures; 41. forty one small hole; 42. forty-two small holes; 43. an inclined hole; 44. a valve body; 45. an oil return port; 46. an oil inlet; 47. a flow passage is communicated; 48. an oil outlet; 49. a first piston chute; 50. a second piston chute; 51. a pressure regulating cavity; 52. a third piston chute; 53. a first piston; 53. a second piston; 54. a piston III; 55. a piston plug; 56. a proximity switch sensor; 57. a pressure regulating valve; 58. and (6) plugging by screwing.
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b): a mechanical double-line reversing valve and a piston coating process are disclosed, as shown in FIGS. 1-5, the mechanical double-line reversing valve comprises a valve body 44, an oil return port 45 is arranged at the upper end of the valve body 44, oil inlets 46 are respectively arranged at the upper ends of the left side and the right side of the valve body 44, a communication flow channel 47 is arranged between the two oil inlets 46, two oil outlets 48 are arranged at the bottom of the valve body 44, a first piston slide groove 49, a second piston slide groove 50, a pressure regulating cavity 51 and a third piston slide groove 52 are sequentially arranged in the valve body 44 from top to bottom, a first piston 53 is arranged in the first piston slide groove 49, a second piston 53 is arranged in the second piston slide groove 50, a third piston 54 is arranged in the third piston slide groove 52, a piston plug 55 is respectively arranged at each of the two ends of the first piston slide groove 49, the two ends of the second piston slide groove 50 and the right end of the third piston slide groove 52, a proximity switch sensor 56 is arranged at the left end of the third piston slide groove 52, the left end of the pressure regulating cavity 51 is provided with a pressure regulating valve 57, and the right end of the pressure regulating cavity 51 is provided with a plug 58.
The front end face of the valve body 44 is provided with a first small hole 111, a second small hole 2, a third small hole 3, a fourth small hole 4, a fifth small hole 5, a sixth small hole 6, a seventh small hole 7 and an eighth small hole 8, the rear end face of the valve body 44 is provided with a second small hole 2 eighteen, a second small hole 2 nineteen, a third small hole 3 ten, a third small hole 3 eleven, a third small hole 3 twelve, a third small hole 3 thirteen, a third small hole 3 fourteen, a third small hole 3 fifteen, a third small hole 3 sixteen, a third small hole 3 seventeen, a third small hole 3 nineteen and a fourth small hole 4 ten, the left end face of the valve body 44 is provided with a second small hole 2 fifteen, a third small hole 2 sixteen, a second small hole 2 seventeen and a fourth small hole 4 twelve, the right end face of the valve body 44 is provided with a ninth small hole 9, a tenth small hole 10, a first small hole 111 and a fourth small hole 4 eleven, and a third small hole ten are arranged on the upper end face of the valve body 44, The valve body 44 is provided with a first small hole 111, a thirteen small hole 10, a fourteen small hole 10, a fifteen small hole 10, a sixty-six small hole 10, a seventy-seven small hole 10 and a fourteen small hole 2, on the lower end face.
The first small hole 111 is communicated with the second 2 seventeen small hole and the third piston sliding groove 52, the second small hole 2 is communicated with the tenth small hole 10 and the third piston sliding groove 52, the fifth small hole 5 is communicated with the twenty-four small hole and the second piston sliding groove 50, the third small hole 3 is communicated with the seventeenth small hole 10 and the second piston sliding groove 50, the sixth small hole 6 is communicated with the twenty-four small hole and the pressure regulating cavity 51, the fourth small hole 4 is communicated with the twentieth small hole 10 eight and the second piston sliding groove 50, the seventeenth small hole 7 is communicated with the twenty-four small hole and the communicating flow passage 47, and the eighty-8 small hole is communicated with the twenty-four small hole and the first piston sliding groove 49.
The small hole twenty 2 eighteen is communicated with the small hole thirteen 10 and the first piston sliding groove 49, the small hole forty 4 eighteen is communicated with the small hole twenty 2 eleven and the first piston sliding groove 49, the small hole thirty 3 nineteen is communicated with the small hole twenty 2 eleven and the oil return port 45, the small hole thirty 3 eighteen is communicated with the small hole nineteen 10 nine and the first piston sliding groove 49, the small hole thirty 3 eleven is communicated with the small hole first 111 and the first piston sliding groove 49, the small hole thirty 3 nineteen is communicated with the small hole twenty 2 eleven and the second piston sliding groove 50, the small hole thirty 3 seventeen is communicated with the small hole nineteen 10 nine and the second piston sliding groove 50, the small hole thirty 3 fifteen is communicated with the small hole first 111 and the pressure regulating cavity 51, the small hole thirty 3 fourteen is communicated with the small hole twenty 2 eleven and the first piston sliding groove 49, the small hole thirty 3 twelve is communicated with the small hole twelfth 10 eleven and the first piston sliding groove 49, the small hole thirty 3 thirteen is communicated with the first piston sliding groove 49, the small hole twenty 2 is communicated with the small hole nine 9 and the small hole sixteen 10, and the small hole thirty 3 is communicated with the small hole twenty 2 sixteen and the small hole fifteen 10.
The small holes twenty 2 fifteen are communicated with a small hole ten 10 nine, the small holes twenty 2 ten and a small hole twenty 2 eleven, the small holes forty 4 twelve are communicated with a small hole twenty 2 twelve, the small holes twenty 2 sixteen are communicated with a small hole one 111, and the small holes twenty 2 seventeen are communicated with a small hole ten 10 seventeen.
The small hole four 4 eleven is communicated with the small hole twenty 2 thirteen, the small hole ten 10 is communicated with the small hole eighteen 10, the small hole one 1111 is communicated with the small hole ten 10 fourteen, and the small hole nine 9 is communicated with the small hole; inclined holes 43 are arranged among the small holes IV 4 twelve, the small holes IV 4 twelve and the second piston sliding groove 50 for communication.
The small hole twenty 2 twelve and the small hole twenty 2 thirteen are both communicated with the first piston sliding groove 49, and the small hole fifteen 10 and the small hole sixteenth are both communicated with the third piston sliding groove 52.
A piston plating process of a mechanical double-line reversing valve comprises the following steps:
(1) purifying the surface of the piston;
(2) igniting the single metal target to generate cold field induced arc discharge, and depositing a single metal priming layer on the surface of the piston;
(3) gradually introducing nitrogen, depositing a single nitride transition layer with gradually increased nitrogen content on the single metal priming layer, and continuously depositing a single nitride coating;
(4) igniting the multi-element target material, gradually increasing the cathode current of the multi-element target material, and depositing a multi-element nitride transition layer with gradually increased metal content on the single nitride coating; and finally, depositing a multi-element nitride coating with fixed alloy content.
The process of claim 6, wherein in the step (2), the vacuum degree in the vacuum chamber is controlled to be 1.02 to 1.38Pa, and the piston bias is adjusted to-17 to-23V.
After nitrogen is introduced in the step (3), the bias voltage of the piston is adjusted to-30 to-40V; depositing a single nitride transition layer until the vacuum degree is maintained at 4-6 Pa, and then continuing to deposit a single nitride coating; maintaining the cathode current when the cathode current is increased to 60-80A, and depositing a multi-nitride coating; finishing the process after 5-20 h of deposition; opening the vacuum cavity to take out the piston after the piston is cooled to be lower than 150 ℃; before the step (1), carrying out nitriding treatment and surface grinding treatment after nitriding treatment; or, the surface grinding treatment is directly carried out without nitriding treatment to remove non-loose microstructures and ensure the bonding force of the plating layer; the single metal target in the step (2) is a Cr target; the multi-element target material in the step (4) is a CrAl target material, a CrMo target material, a CrW target material, a CrB target material, CrSi or CrTi target material; the addition amount of Al, Mo, W, B, Si or Ti in the multi-element target material is 5-50% atm; the number ratio of the cathode arc sources of the single metal target material to the cathode arc sources of the multi-element target material is 2:3 or 3: 2.
The principle of the invention is as follows: grease in the lubricating pump enters from two (can be only connected with one) oil inlet 46 joints, enters into the small hole twenty 2 fourteen through the small hole seventy 7, enters into the small holes eight 8, six and five through the small hole twenty 2 fourteen, then enters into the space below the piston I53, the piston II 53 and the pressure regulating valve 57, at the moment, the piston I53 is positioned at the left side of the valve body 44, the grease in the piston I53 enters into the small hole twenty 2 twelve, the grease in the small hole twenty 2 twelve enters into the small hole forty 4 twelve, the grease in the small hole forty 4 twelve enters into the left inclined hole 43 connected with the piston II 53, the grease in the left inclined hole 43 enters into the left side of the piston II 53, the piston II 53 is pushed rightwards to the right piston plug 55, during the movement of the piston, the grease in the space at the right side of the piston II 53 enters into the small hole forty 4 eleven through the inclined hole 43, the grease in the small hole forty 4 eleven, the grease in the small hole twenty 2 enters into the small hole forty through the piston I53, grease in the small hole four 4 ten enters the small hole two 2 eleven, grease in the small hole two 2 eleven enters the small hole two 2 fifteen, grease in the small hole two 2 fifteen enters the small hole two 2 eleven, grease in the small hole two 2 eleven enters the small hole three 3 nineteen, grease in the small hole three 3 nineteen enters the lubricating pump through the oil return port 45, grease in the small hole six 6 enters the small hole four 4 through the piston two 53, grease in the small hole four 4 enters the small hole ten 10 eight, grease in the small hole ten 10 eight enters the small hole ten 10, grease in the small hole ten 10 enters the small hole two 2, penetrates through the hole of the piston three 54 to reach the right side oil outlet 48, grease enters the double-wire distributor through the right side oil outlet 48, the pressure on the right side of the system is increased to the pressure of the pressure regulating valve 57 in the double-wire reversing valve after the double-wire distributor works once, the grease pushes the piston three 54 to move left to approach the switch sensor 56 in the pressure increasing process, after the pressure regulating valve 57 is compressed to a set pressure, grease enters a small hole thirty-3-five from the pressure regulating valve 57, grease enters a small hole I111 from the small hole thirty-3-fifteen, grease enters a small hole fourteen 10 from the small hole I111, grease enters a small hole thirty-3-twelve from the small hole fourteen, grease enters a small hole fifteen 10 from a piston III 54, grease enters a small hole thirty-3-five from the small hole fifteen 10-five, grease enters a small hole thirty-3-ten from the small hole thirty-3-ten, grease enters a small hole twenty-2-sixteen, grease enters the small hole I111 from the small hole twenty-2-sixteen, grease enters a small hole thirty-3-eleven from the small hole III 111, grease enters a piston I53 from the small hole thirty-3-eleven, grease enters a piston II 53 from the right side, the piston is pushed to the right side piston plug 55, grease pumped out from a small hole eight 8 enters a small hole twenty-2-thirteen from the piston I53, grease enters a small hole forty from the small hole twenty-4-eleven, grease enters a small hole forty from the right side oblique hole 43 connected with the piston II 53, grease in the right inclined hole 43 enters the right side of the piston II 53, the piston II 53 is pushed to the left side to the piston plug 55, the grease in the cavity on the right side of the original piston I53 enters the small hole twenty 2 eighteen along with the movement of the piston, the grease in the small hole twenty 2 eighteen enters the small hole thirteen 10, the grease in the small hole thirteen 10 enters the small hole nine 9, the grease in the small hole nine 9 enters the small hole twenty 2 nineteen, the grease in the small hole twenty 2 nineteen enters the small hole sixteen 10, the grease in the small hole sixteen enters the small hole thirty 3 fourteen through the piston III 54, the grease in the small hole thirty 3 fourteen enters the small hole twenty 2 eleven, the grease in the small hole twenty 2 eleven enters the small hole twenty 2 fifteen, the grease in the small hole twenty 2 nineteen enters the small hole thirty 3 nineteen, the grease in the small hole thirty 3 nineteen enters the oil return port 45 and returns to the pump, and the grease sent out by the pump enters the small hole thirty 3 through the piston II 53 from the small hole sixty 6, grease in the small hole III 3 enters a small hole eleven 10, grease in the small hole eleven 10 enters a small hole twenty 2 seventeen, grease in the small hole twenty 2 seventeen enters a small hole I111, grease in the small hole I111 enters an oil outlet 48 through the left side position of a piston III 54, grease enters the double-line distributor through the left oil outlet 48, oil returns from the right side of the double-line distributor during the left side work, grease enters the small hole II 2 through the right oil outlet 48, grease in the small hole II 2 enters the small hole tenth 10, grease in the small hole tenth 10 enters the small hole eighteen, grease in the small hole tenth 10 eighty enters a small hole forty 4, grease in the small hole forty 4 enters a small hole thirty-six through a piston II 53, grease in the small hole thirty-six enters a small hole twenty-two 2 eleven, grease in the small hole twenty-2 eleven enters a small hole twenty-2, grease in the small hole twenty-2-ten enters a small hole thirty-nine, grease in the small hole twenty-2-nine enters a small hole thirty-nine, and grease in the small hole thirty-nine-oil returns to the lubricating pump through a grease return joint; the left side oil return and the right side oil return are the same; the proximity switch sensor 56 will monitor the signal every time the reversing valve piston moves, and the feedback signal is transmitted to the program controller in the lubricating pump to control the working times and working state of the whole system.
Finally, it should be noted that the above embodiments are merely representative examples of the present invention. It is obvious that the invention is not limited to the above-described embodiments, but that many variations are possible. Any simple modification, equivalent change and modification made to the above embodiments in accordance with the technical spirit of the present invention should be considered to be within the scope of the present invention.
Claims (8)
1. A mechanical two-wire reversing valve comprising a valve body (44), characterized in that: an oil port (45) is arranged at the upper end of the valve body (44), oil inlets (46) are respectively arranged at the upper ends of the left side and the right side of the valve body (44), a communication flow passage (47) is arranged between the two oil inlets (46), two oil outlets (48) are arranged at the bottom of the valve body (44), a first piston sliding groove (49), a second piston sliding groove (50), a pressure regulating cavity (51) and a third piston sliding groove (52) are sequentially arranged in the valve body (44) from top to bottom, a first piston (53) is arranged in the first piston sliding groove (49), a second piston (53) is arranged in the second piston sliding groove (50), a third piston (54) is arranged in the third piston sliding groove (52), two ends of the first piston sliding groove (49), two ends of the second piston sliding groove (50) and the right end of the third piston sliding groove (52) are respectively provided with a piston plug (55), the left end of the third piston chute (52) is provided with a proximity switch sensor (56), the left end of the pressure regulating cavity (51) is provided with a pressure regulating valve (57), and the right end of the pressure regulating cavity (51) is provided with a plug (58).
2. A mechanical two-wire reversing valve according to claim 1, characterized in that: the valve is characterized in that a first small hole (1), a second small hole (2), a third small hole (3), a fourth small hole (4), a fifth small hole (5), a sixth small hole (6), a seventh small hole (7) and an eighth small hole (8) are arranged on the front end face of the valve body (44), a second small hole (2) eighteen, a second small hole (2) nineteen, a third small hole (3) ten, a third small hole (3) eleven, a third small hole (3) twelve, a third small hole (3) thirteen, a third small hole (3) fourteen, a fifteenth small hole (3), a sixteenth small hole (3), a third small hole (3) seventeen, a third small hole (3) eighteen, a third small hole (3) nineteen and a fourth small hole (4) ten are arranged on the left end face of the valve body (44), a second small hole (2) fifteen, a second small hole (2) sixteen, a second small hole (2) seventeen and a fourth small hole (4) twelve are arranged on the right end face of the valve body (44), a small hole nine (9) is arranged on the right end face of the valve body (44), The valve is characterized in that the valve comprises ten (10) small holes, ten (10) one small holes and four (4) eleven small holes, the upper end face of the valve body (44) is provided with ten (10) nine small holes, two (2) ten small holes, two (2) eleven small holes, two (2) twelve small holes, two (2) thirteen small holes and two (2) fourteen small holes, and the lower end face of the valve body (44) is provided with two small holes, ten (10) three small holes, ten (10) four small holes, ten (10) five small holes, ten (10) six small holes, ten (10) seven small holes and ten (10) eight small holes.
3. A mechanical two-wire reversing valve according to claim 2, characterized in that: the small hole 1 is communicated with a small hole two (2) seventeen and a third piston sliding groove (52), the small hole two (2) is communicated with a small hole ten (10) and a third piston sliding groove (52), the small hole five (5) is communicated with a small hole two (2) fourteen and a second piston sliding groove (50), the small hole three (3) is communicated with the small hole ten (10) seventeen and the second piston sliding groove (50), a small hole six (6) is communicated with the small hole two (2) fourteen and a pressure regulating cavity (51), a small hole four (4) is communicated with the small hole ten (10) eighths and the second piston sliding groove (50), a small hole seven (7) is communicated with the small hole two (2) fourteen and a communication flow passage (47), and the small hole eight (8) is communicated with the small hole two (2) fourteen and the first piston sliding groove (49).
4. A mechanical two-wire reversing valve according to claim 3, characterized in that: the small hole II (2) eighteen is communicated with a small hole eleven (10) and a first piston sliding groove (49), the small hole IV (4) eighteen is communicated with a small hole eleven (2) and a first piston sliding groove (49), the small hole III (3) nineteen is communicated with a small hole eleven (2) and an oil return port (45), the small hole III (3) eighteen is communicated with a small hole eleven (10) and a first piston sliding groove (49), the small hole III (3) eleven is communicated with a small hole eleven (10) and a first piston sliding groove (49), the small hole III (3) nineteen is communicated with a small hole eleven (2) and a second piston sliding groove (50), the small hole III (3) seventeen is communicated with a small hole eleven (10) and a second piston sliding groove (50), the small hole III (3) fifteen is communicated with a small hole eleven (10) and a pressure regulating cavity (51), and the small hole III (3) fourteen is communicated with a small hole eleven (2) and a first piston sliding groove (49), the small hole three (3) twelve is communicated with the small hole ten (10) four and the first piston sliding groove (49), the small hole three (3) thirteen is communicated with the small hole ten (10) nine and the first piston sliding groove (49), the small hole two (2) nineteen is communicated with the small hole nine (9) and the small hole ten (10) six, and the small hole three (3) ten is communicated with the small hole two (2) sixteen and the small hole ten (10) five.
5. A mechanical two-wire reversing valve according to claim 4, characterized in that: the small hole II (2) fifteen is communicated with the small hole III (10), the small hole II (2) eleven is communicated with the small hole II (2), the small hole IV (4) twelve is communicated with the small hole II (2) twelve, the small hole II (2) sixteen is communicated with the small hole II (10), and the small hole II (2) seventeen is communicated with the small hole III (10).
6. A mechanical two-wire reversing valve according to claim 5, characterized in that: the small hole four (4) eleven is communicated with the small hole two (2) thirteen, the small hole ten (10) is communicated with the small hole ten (10) eight, the small hole ten (10) is communicated with the small hole ten (10) four, and the small hole nine (9) is communicated with the small hole; and inclined holes (43) are arranged among the small holes IV (4) twelve, the small holes IV (4) twelve and the second piston sliding groove (50) for communication.
7. A mechanical two-wire reversing valve according to claim 6, wherein: the twelve small holes (2) and the thirteen small holes (2) are communicated with a first piston sliding groove (49), and the fifteen small holes (10) and the sixteenth small holes (10) are communicated with a third piston sliding groove (52).
8. The piston coating process of the mechanical double-line reversing valve according to claim 1, characterized in that: the method comprises the following steps:
(1) purifying the surface of the piston;
(2) igniting the single metal target to generate cold field induced arc discharge, and depositing a single metal priming layer on the surface of the piston;
(3) gradually introducing nitrogen, depositing a single nitride transition layer with gradually increased nitrogen content on the single metal priming layer, and continuously depositing a single nitride coating;
(4) igniting the multi-element target material, gradually increasing the cathode current of the multi-element target material, and depositing a multi-element nitride transition layer with gradually increased metal content on the single nitride coating; and finally, depositing a multi-element nitride coating with fixed alloy content.
When the step (2) is carried out, controlling the vacuum degree in the vacuum cavity to be 1.02-1.38 Pa, and adjusting the bias voltage of the piston to-17 to-23V; after nitrogen is introduced in the step (3), the bias voltage of the piston is adjusted to-30 to-40V; depositing a single nitride transition layer until the vacuum degree is maintained at 4-6 Pa, and then continuing to deposit a single nitride coating; maintaining the cathode current when the cathode current is increased to 60-80A, and depositing a multi-nitride coating; finishing the process after 5-20 h of deposition; opening the vacuum cavity to take out the piston after the piston is cooled to be lower than 150 ℃; before the step (1), carrying out nitriding treatment and surface grinding treatment after nitriding treatment; or directly carrying out surface grinding treatment without nitriding treatment to remove non-loose microstructures and ensure the bonding force of the plating layer; the single metal target in the step (2) is a Cr target; the multi-element target material in the step (4) is a CrAl target material, a CrMo target material, a CrW target material, a CrB target material, CrSi or CrTi target material; the addition amount of Al, Mo, W, B, Si or Ti in the multi-element target material is 5-50% atm; the number ratio of the cathode arc sources of the single metal target material to the cathode arc sources of the multi-element target material is 2:3 or 3: 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210139803.XA CN114321448B (en) | 2022-02-16 | 2022-02-16 | Mechanical double-line reversing valve and piston coating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210139803.XA CN114321448B (en) | 2022-02-16 | 2022-02-16 | Mechanical double-line reversing valve and piston coating process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114321448A true CN114321448A (en) | 2022-04-12 |
| CN114321448B CN114321448B (en) | 2024-07-19 |
Family
ID=81030187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210139803.XA Active CN114321448B (en) | 2022-02-16 | 2022-02-16 | Mechanical double-line reversing valve and piston coating process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114321448B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251225A (en) * | 2008-04-09 | 2008-08-27 | 义小毛 | Hydraulic pressure regulating automatic reversing combined valve for double-line grease lubricating system |
| CN201771882U (en) * | 2010-05-17 | 2011-03-23 | 袁平 | Ultrahigh pressure automatic hydraulic directional valve |
| CN201827164U (en) * | 2010-10-26 | 2011-05-11 | 潍坊市机械设计研究院有限责任公司 | Hydraulic pressure automatic change valve |
| CN203348205U (en) * | 2013-07-09 | 2013-12-18 | 青岛华仁技术孵化器有限公司 | Hydraulic automatic reversing valve for lubricating oil |
| CN109083874A (en) * | 2017-06-13 | 2018-12-25 | 博世力士乐（常州）有限公司 | Two-way function booster |
| DE102019204874A1 (en) * | 2019-04-05 | 2020-10-08 | Skf Lubrication Systems Germany Gmbh | Switching device and lubrication pump |
-
2022
- 2022-02-16 CN CN202210139803.XA patent/CN114321448B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251225A (en) * | 2008-04-09 | 2008-08-27 | 义小毛 | Hydraulic pressure regulating automatic reversing combined valve for double-line grease lubricating system |
| CN201771882U (en) * | 2010-05-17 | 2011-03-23 | 袁平 | Ultrahigh pressure automatic hydraulic directional valve |
| CN201827164U (en) * | 2010-10-26 | 2011-05-11 | 潍坊市机械设计研究院有限责任公司 | Hydraulic pressure automatic change valve |
| CN203348205U (en) * | 2013-07-09 | 2013-12-18 | 青岛华仁技术孵化器有限公司 | Hydraulic automatic reversing valve for lubricating oil |
| CN109083874A (en) * | 2017-06-13 | 2018-12-25 | 博世力士乐（常州）有限公司 | Two-way function booster |
| DE102019204874A1 (en) * | 2019-04-05 | 2020-10-08 | Skf Lubrication Systems Germany Gmbh | Switching device and lubrication pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114321448B (en) | 2024-07-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112901570B (en) | Electro-hydraulic actuating system applied to hydraulic press | |
| CN1241244A (en) | Fuel injection device for IC engines | |
| CN204677251U (en) | Operating oil supplying device | |
| CN101338829B (en) | Multipath hydraulic change-over valve | |
| CN114321448A (en) | Mechanical double-line reversing valve and piston coating process | |
| CN102430680B (en) | Super-slow hydraulic system for synchro-driven die-forging hydraulic press | |
| CN201284847Y (en) | Multipath hydraulic reverse valve | |
| CN106334843A (en) | Working fluid supply device for electrical discharge machine | |
| CN105899737A (en) | Method and apparatus for controlling main control valve of construction machine | |
| CN1034793A (en) | Stepless frequency-adjusting and cone valve controlled hydraulic shocking device | |
| CN112196855B (en) | Linear walking control valve, linear walking control system and crawler-type engineering machinery | |
| CN212985426U (en) | Fuel common rail system | |
| EP0795086B1 (en) | Vane pump | |
| CN210599129U (en) | Middle steam extraction adjusting mechanism of small-flow steam turbine | |
| CN209012162U (en) | A kind of hydraulic control system | |
| CN112096669A (en) | Hydraulic system of servo pump-valve control bending machine | |
| CN217539723U (en) | Pressure-adjustable automatic reversing valve | |
| CN100416081C (en) | Device for fuel injection rate shaping | |
| CN104832467A (en) | Double-row plunger type axial hydraulic transformer | |
| CN112833063B (en) | Hydraulic pressure flow divider valve with multi-stage pressure feedback | |
| DE202014101335U1 (en) | Internal combustion engine with variable valve train | |
| CN101892943B (en) | Switch motor variable-torque oil distribution mechanism capable of independently adjusting oil absorption and extraction and torque shift method | |
| CN212106424U (en) | Multi-way valve for realizing potential energy recycling of movable arm oil cylinder of excavator | |
| CN221799978U (en) | Oil distribution sealing cover of double-speed inner curve hydraulic motor | |
| CN219413085U (en) | Wrong throttle sleeve for steam turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |