Oxygen secondary purification module valve, oxygen generator and oxygen generation method

Abstract

The invention provides an oxygen secondary purification module valve, an oxygen generator and an oxygen generation method. The oxygen secondary purification module valve comprises a module valve main body 3, a middle valve block 2 and a pressure equalizing valve block 4, wherein the module valve main body 3 comprises seven main paths, four branch paths, ten angle valves, fourteen opening ends and a first plug 501; the middle valve block 2 comprises six gas paths, two shuttle valves, a pressure release valve 01C and seven opening ends; the pressure equalizing valve block 4 comprises a first pipeline 601, two open ends and a second plug 502. The valve bank has the advantages that various valve banks are integrated with the pipeline, and the problem that a conventional gas guide pipeline valve bank is complex in machining and installation is solved: in the machining process, tedious treatment such as cutting and welding of a stainless steel pipe is not needed, and the problems of pipeline deformation, inaccurate size or gas leakage and the like cannot occur; and the air guide pipeline valve group is simple in structure, free of disordered air pipe arrangement and small in occupied space.

Description

Technical Field

[0001] The present application belongs to the technical field of oxygen generators, and specifically relates to an oxygen secondary purification module valve, an oxygen generator and an oxygen production method. Background Art

[0002] The function of the secondary purification oxygen production device is to purify the oxygen-rich gas with an oxygen content of 93%-95% produced by the PSA method, discharge argon gas, and obtain oxygen with an oxygen purity greater than 99.5%.

[0003] The existing secondary purification oxygen production device is generally composed of an adsorption tower, a pneumatic valve, a muffler, and a circulating compressor, etc., and each component is connected by an air pipeline. When connecting the air pipeline, it is necessary to cut the stainless steel pipe into corresponding sizes and weld it with elbows, tees, etc. to form a continuous pipeline, and then weld it with a flexible joint, and then use threaded connections between the flexible joints. As recorded in the Chinese invention patent "A Normal Temperature High Purity Oxygen Production Device" with publication number CN117582780A.

[0004] During the processing of the air guide pipeline, stainless steel pipes need to go through tedious processing such as cutting and welding, which is prone to pipeline deformation, inaccurate size or leakage. In addition, affected by the size of standard parts such as unions, elbows and tees and the size of the adsorption tower, the air guide pipeline valve group will have problems such as complex structure, messy air pipes, and large space. In terms of assembly, conventional air guide valve groups have many joints, long assembly time, and difficult maintenance and replacement of shuttle valves. Summary of the invention

[0005] The purpose of the present application is to overcome the defects of the existing arrangement of multiple valve groups with different functions, which leads to complex structure and inconvenient installation.

[0006] In order to achieve the above-mentioned purpose, the present application proposes an oxygen secondary purification module valve, which includes a module valve body 3, a middle valve block 2 and a pressure equalizing valve block 4; the middle valve block 2 and the pressure equalizing valve block 4 are located on the same side of the module valve body 3 and are detachably connected to the module valve body 3; wherein,

[0007] The modular valve body 3 includes 7 main circuits, 4 branch circuits, 10 angle valves, 14 opening ends and a first plug 501;

[0008] The 10 angle valves include a first angle valve 01A, a second angle valve 02A, a third angle valve 03A, a fourth angle valve 04A, a fifth angle valve 05A, a sixth angle valve 01B, a seventh angle valve 02B, an eighth angle valve 03B, a ninth angle valve 04B and a tenth angle valve 05B, which are respectively located on the top surface, the bottom surface and the left and right sides of the module valve body 3;

[0009] The 14 opening ends include a first opening end 401, a second opening end 402, a third opening end 403, a fourth opening end 404, a fifth opening end 405, a sixth opening end 406, a seventh opening end 407, an eighth opening end 408, a ninth opening end 409, a tenth opening end 410, an eleventh opening end 411, a twelfth opening end 412, a thirteenth opening end 413 and a fourteenth opening end 414, and the first plug 501 is located on the top surface, the bottom surface, the left and right side surfaces and a side surface adjacent to the middle valve block 4 of the module valve body 3;

[0010] The 7 main roads include the first main road 101, the second main road 102, the third main road 103, the fourth main road 104, the fifth main road 105, the sixth main road 106 and the seventh main road 107, and the 4 branches include the first branch 201, the second branch 202, the third branch 203 and the fourth branch 204, which are pipelines inside the module valve body 3; wherein:

[0011] One end of the first main path 101 is connected to the first opening end 401 on the upper part of the module valve body 3, and the other end is connected to the fifth main path 105; the middle part of the first main path 101 is connected to the first branch path 201, the second branch path 202, the third branch path 203 and the ninth opening end 409 on the side of the module valve body 3;

[0012] One end of the third main path 103 is connected to the fifth opening end 405 on the upper part of the module valve body 3, and one end is connected to the second main path 102; the middle part of the third main path 103 is connected to the first branch 201, the second branch 202, the third branch 203 and the fourteenth opening end 414 on the side of the module valve body 3;

[0013] The two ends of the first branch 201 are respectively connected to the first angle valve 01A and the sixth angle valve 01B on both sides of the module valve body 3; the middle of the first branch 201 is connected to the first main path 101, the third main path 103, the second opening end 402, the third opening end 403 and the fourth opening end 404 of the upper part of the module valve body 3;

[0014] The two ends of the second branch 202 are respectively connected to the third angle valve 03A and the eighth angle valve 03B on both sides of the module valve body 3; the middle of the second branch 202 is connected to the first main path 101, the third main path 103, and the tenth opening end 410 on the side of the module valve body 3;

[0015] The two ends of the third branch 203 are respectively connected to the second angle valve 02A and the seventh angle valve 02B on both sides of the module valve body 3; the middle of the third branch 203 is connected to the first main path 101, the third main path 103, and the eleventh opening end 411 on the side of the module valve body 3;

[0016] One end of the second main path 102 is connected to the twelfth opening end 412 on the side of the module valve body 3, and the other end is connected to the ninth angle valve 04B on the side of the module valve body 3;

[0017] One end of the fifth main path 105 is connected to the fourth angle valve 04A on the side of the module valve body 3, and the other end is connected to the fourth main path 104;

[0018] One end of the sixth main path 106 is connected to the first plug 501 on the side of the module valve body 3, and the other end is communicated with the thirteenth opening end 413 on the side of the module valve body 3;

[0019] One end of the seventh main path 107 is connected to the sixth main path 106, one end is connected to the eighth opening end 408 on the bottom surface of the module valve body 3, and the middle part is connected to the fourth branch path 204;

[0020] One end of the fourth main path 104 is connected to the fifth main path 105, one end is connected to the sixth opening end 406 on the bottom surface of the module valve body 3, and the middle part is connected to the fourth branch path 204;

[0021] The fourth branch 204 is connected at both ends to the fifth angle valve 05A and the tenth angle valve 05B on both sides of the module valve body 3, and the middle is connected to the seventh main path 107, the fourth main path 104 and the seventh opening end 407 on the bottom surface of the module valve body 3;

[0022] The middle valve block 2 contains 6 gas lines, 2 shuttle valves, pressure relief valve 01C and 7 open ends;

[0023] The two shuttle valves include a first shuttle valve 06A and a second shuttle valve 06B, and the pressure relief valve 01C are respectively located on two sides of the middle valve block 2;

[0024] The seven opening ends include a fifteenth opening end 415, a sixteenth opening end 416, a seventeenth opening end 417, an eighteenth opening end 418, a nineteenth opening end 419, a twentieth opening end 420 and a twenty-first opening end 421, which are respectively located on the top surface, the bottom surface, a side surface and a side surface adjacent to the module valve body 3 of the middle valve block 2; wherein the twentieth opening end 420 is selectively connected to the tenth opening end 410 on the module valve body 3; the twenty-first opening end 421 is selectively connected to the eleventh opening end 411 on the module valve body 3;

[0025] The six gas paths include the first gas path 301, the second gas path 302, the third gas path 303, the fourth gas path 304, the fifth gas path 305 and the sixth gas path 306, which are pipelines inside the middle valve block 2; wherein:

[0026] One end of the first gas path 301 is connected to the fifteenth opening end 415, one end is connected to the fifth gas path 305, and the middle part is connected to the second gas path 302;

[0027] One end of the second gas path 302 is connected to the second shuttle valve 06B, one end is connected to the seventeenth opening end 417, and the middle part is connected to the first gas path 301 and the third gas path 303;

[0028] One end of the third gas path 303 is connected to the sixteenth opening end 416, one end is connected to the fourth gas path 304, and the middle part is connected to the second gas path 302;

[0029] One end of the fourth gas path 304 is connected to the third gas path 303, one end is connected to the pressure relief valve 01C, and the middle part is connected to the sixth gas path 306; the fourth gas path 304 is connected to the third gas path 303 at the same time as the twentieth opening end 420;

[0030] One end of the sixth gas path 306 is in communication with the fourth gas path 304 , and one end is in communication with the eighteenth opening end 418 ;

[0031] One end of the fifth gas path 305 is connected to the first shuttle valve 06A, one end is connected to the nineteenth opening end 419, and the middle part is connected to the first gas path 301 and the twenty-first opening end 421;

[0032] The pressure equalizing valve block 4 comprises a first pipeline 601, two open ends and a second plug 502;

[0033] The two opening ends include a twenty-second opening end 422 and a twenty-third opening end 423, which are located on a side adjacent to the module valve body 3, wherein: the twenty-second opening end 422 is communicated with the thirteenth opening end 413 on the module valve body 3; the twenty-third opening end 423 is communicated with the twelfth opening end 412 on the module valve body 3;

[0034] The first pipeline 601 is a pipeline inside the pressure equalizing valve block 4 ; one end of the first pipeline 601 is connected to the 23rd opening end 423 , one end is connected to the second plug 502 , and the middle part is connected to the 22nd opening end 422 .

[0035] All angle valves and shuttle valves are connected to the module valve body 3 and the middle valve block 2 by threaded connection.

[0036] As an improvement of the above oxygen secondary purification module valve, the module valve body 3, the middle valve block 2 and the pressure equalizing valve block 4 are all roughly rectangular parallelepiped structures.

[0037] As an improvement of the above oxygen secondary purification module valve, the module valve body 3, the middle valve block 2 and the pressure equalizing valve block 4 are all made of aluminum alloy and subjected to hard anodizing treatment.

[0038] The present application also provides an oxygen generator, comprising a first adsorption tower 5, a second adsorption tower 6, a circulating compressor 7 and an oxygen buffer tank 10, and the above-mentioned oxygen secondary purification module valve; wherein,

[0039] The first opening end 401 of the oxygen secondary purification module valve is detachably connected to the air inlet pipeline of the first adsorption tower 5; the third opening end 403 is detachably connected to the air inlet pipeline; the fifth opening end is detachably connected to the air inlet pipeline of the second adsorption tower 6; the sixth opening end 406 is detachably connected to the air outlet pipeline of the second adsorption tower 6; the seventh opening end 407 is detachably connected to the first muffler 8; the eighth opening end 408 is detachably connected to the air outlet pipeline of the first adsorption tower 5; the fifteenth opening end 415 is detachably connected to the oxygen buffer tank 10; the seventeenth opening end 417 is detachably connected to the air outlet pipe of the circulation compressor 7; and the nineteenth opening end 419 is detachably connected to the air inlet pipe of the circulation compressor 7.

[0040] The present application also provides an oxygen production method, which is implemented based on the above-mentioned oxygen generator, and the method includes:

[0041] Step 1: Open the first angle valve 01A, close other valves, and oxygen-enriched air with an oxygen content of more than 93% enters the first adsorption tower 5, and the first adsorption tower 5 adsorbs oxygen; open the seventh angle valve 02B and the second shuttle valve 06B, close other valves, recover the pure oxygen gas in the second adsorption tower 6, and enter the oxygen buffer tank 10 after being pressurized by the circulating compressor 7;

[0042] Step 2: Open the seventh angle valve 02B, the second shuttle valve 06B, the third angle valve 03A and the fifth angle valve 05A, and close other valves. A part of the pure oxygen gas produced by the second adsorption tower 6 enters the oxygen buffer tank 10 after being pressurized by the circulation compressor 7, and a part enters the first adsorption tower 5 to discharge most of the waste gas;

[0043] Step 3: Open the third angle valve 03A, the fifth angle valve 05A and the first shuttle valve 06A, and close other valves, so that the pure oxygen in the oxygen buffer tank 10 is pressurized by the circulating compressor 7 and then enters the first adsorption tower 5 for washing, and discharges the residual waste gas;

[0044] Step 4: Open the ninth angle valve 04B, the first shuttle valve 06A and the second shuttle valve 06B, and close other valves, so that the pure oxygen gas adsorbed by the first adsorption tower 5 enters the second adsorption tower 6, and the first adsorption tower 5 and the second adsorption tower 6 are pressurized; the pure oxygen gas in the oxygen buffer tank 10 is pressurized by the circulation compressor 7 and then returns to the oxygen buffer tank 10;

[0045] Step 5: Open the sixth angle valve 01B, close other valves, and oxygen-enriched air with an oxygen content of more than 93% enters the second adsorption tower 6, and the second adsorption tower 6 adsorbs oxygen; open the second angle valve 02A and the second shuttle valve 06B, close other valves, and recover the pure oxygen gas in the first adsorption tower 5, and enter the oxygen buffer tank 10 after being pressurized by the circulating compressor 7;

[0046] Step 6: Open the second angle valve 02A, the eighth angle valve 03B, the tenth angle valve 05B and the second shuttle valve 06B, and close other valves. A part of the pure oxygen gas produced by the first adsorption tower 5 enters the oxygen buffer tank 10 after being pressurized by the circulation compressor 7, and a part enters the second adsorption tower 6 to discharge most of the waste gas;

[0047] Step 7: Open the eighth angle valve 03B, the tenth angle valve 05B and the first shuttle valve 06A, and close other valves, so that the pure oxygen in the oxygen buffer tank 10 is pressurized by the circulating compressor 7 and then enters the second adsorption tower 6 for washing, and discharges the residual waste gas;

[0048] Step 8: Open the fourth angle valve 04A, the first shuttle valve 06A and the second shuttle valve 06B, and close other valves, so that the pure oxygen gas adsorbed by the second adsorption tower 6 enters the first adsorption tower 5, and the first adsorption tower 5 and the second adsorption tower 6 are pressurized; the pure oxygen gas in the oxygen buffer tank 10 is pressurized by the circulation compressor 7 and then returns to the oxygen buffer tank 10;

[0049] Step 9: Repeat the above steps.

[0050] Compared with the prior art, the advantages of this application are:

[0051] 1. The air intake valve group, cleaning valve group, oxygen production valve group, pressure equalizing valve group, exhaust valve group, oxygen absorption valve group, oxygen delivery valve group and pipeline are integrated to solve the problem of complex processing and installation of conventional gas pipeline valve groups:

[0052] 2. During the processing, there is no need to cut or weld the stainless steel pipe, and there will be no problems such as pipe deformation, inaccurate size or air leakage;

[0053] 3. There is no influence of the size of standard parts such as joints, elbows and tees on the size of the adsorption tower. The structure of the gas pipeline valve group is simple, there is no messy arrangement of air pipes, and it occupies a small space.

[0054] 4. In terms of assembly, there is no problem of conventional air guide valve groups with too many joints, long assembly time, and difficult maintenance and replacement of shuttle valves. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 The valve structure diagram of the oxygen secondary purification module is shown;

[0056] Figure 2 Shown is a top view of the valve of the oxygen secondary purification module;

[0057] Figure 3 The figure shows a bottom bottom view of the valve of the oxygen secondary purification module;

[0058] Figure 4 The figure shows a perspective view of the main body of the modular valve, which identifies the 7 main circuits, 4 branch circuits and surrounding angle valves inside;

[0059] Figure 5 Shown is a perspective view of the modular valve body, identifying the surrounding open ends;

[0060] Figure 6 Shown is a perspective view of the middle valve block;

[0061] Figure 7 Shown is a perspective view of the pressure equalizing valve block;

[0062] Figure 8 Shown is the connection logic diagram of the various components of the oxygen concentrator.

[0063] Figure ID:

[0064] 2. Middle valve block 3. Modular valve body

[0065] 4. Pressure equalizing valve block 5. First adsorption tower

[0066] 6. Second adsorption tower 7. Circulation compressor

[0067] 8. First muffler 9. Fourth muffler

[0068] 10. Oxygen buffer tank

[0069] 101, first main road 102, second main road

[0070] 103. Third Main Road 104. Fourth Main Road

[0071] 105. Fifth Main Road 106. Sixth Main Road

[0072] 107, Seventh Main Road 201, First Branch Road

[0073] 202, Second Branch Road 203, Third Branch Road

[0074] 204, Fourth Branch Road

[0075] 301, first gas path 302, second gas path

[0076] 303, third gas path 304, fourth gas path

[0077] 305, fifth gas path 306, sixth gas path

[0078] 01A, first angle valve 02A, second angle valve

[0079] 03A, third angle valve 04A, fourth angle valve

[0080] 05A, fifth angle valve 06A, first shuttle valve

[0081] 01B, sixth angle valve 02B, seventh angle valve

[0082] 03B, Eighth Angle Valve 04B, Ninth Angle Valve

[0083] 05B, tenth angle valve 06B, second shuttle valve

[0084] 01C, Pressure relief valve

[0085] 401, first opening end 402, second opening end

[0086] 403, third opening end 404, fourth opening end

[0087] 405, fifth opening end 406, sixth opening end

[0088] 407, seventh opening end 408, eighth opening end

[0089] 409, ninth opening end 410, tenth opening end

[0090] 411, eleventh opening end 412, twelfth opening end

[0091] 413, 13th opening end 414, 14th opening end

[0092] 415, 15th opening end 416, 16th opening end

[0093] 417, 17th opening end 418, 18th opening end

[0094] 419, 19th opening end 420, 20th opening end

[0095] 421, 21st opening end 422, 22nd opening end

[0096] 423, the twenty-third opening

[0097] 501, first plug 502, second plug

[0098] 601, First Pipeline DETAILED DESCRIPTION

[0099] The technical solution of the present application is described in detail below with reference to the accompanying drawings.

[0100] The oxygen secondary purification module valve provided in the present application integrates the pipeline and the angle valve on the valve plate, and realizes the opening and closing of the pipeline by switching the reciprocating motion of the angle valve valve core. The connection between the angle valve and the valve plate, and between the shuttle valve and the valve plate is mainly through threaded tightening. The angle valve and the shuttle valve are easy to replace, reduce pipeline interfaces, and facilitate installation and maintenance.

[0101] like Figure 1 , Figure 2 , Figure 3 As shown, the oxygen secondary purification module valve includes a module valve body 3, a middle valve block 2 and a pressure equalizing valve block 4. The module valve body 3, the middle valve block 2 and the pressure equalizing valve block 4 are all roughly rectangular parallelepiped structures, made of aluminum alloy, and hardened. The middle valve block 2 and the pressure equalizing valve block 4 are located on the same side of the module valve body 3 and are detachably connected to the module valve body 3.

[0102] The structure of the module valve body 3 is as follows Figure 4 , Figure 5 As shown, it includes 7 main roads, 4 branch roads, 10 angle valves, 14 open ends and a first plug 501.

[0103] The 10 angle valves are respectively located on the left and right sides of the module valve body 3. The 14 opening ends and the first plug 501 on the module valve body 3 are located on the top surface, bottom surface, left and right sides of the module valve body 3 and a side surface adjacent to the middle valve block 2. Among them:

[0104] The first opening end 401 is detachably connected to the air inlet pipeline of the first adsorption tower 5; the second opening end 402 is detachably connected to the first sensor; the third opening end 403 is detachably connected to the air inlet pipeline; the fourth opening end 404 is detachably connected to the second sensor; the fifth opening end is detachably connected to the air inlet pipeline of the second adsorption tower 6; the sixth opening end 406 is detachably connected to the air outlet pipeline of the second adsorption tower 6; the seventh opening end 407 is detachably connected to the first muffler 8; the eighth opening end 408 is detachably connected to the air outlet pipeline of the first adsorption tower 5; the ninth opening end 409 is detachably connected to the third sensor; the tenth opening end 410 and the eleventh opening end 411 are both selectively connected to the middle valve block 2; the twelfth opening end 412 and the thirteenth opening end 413 are both selectively connected to the pressure equalizing valve block 4; the fourteenth opening end 414 is detachably connected to the fourth sensor.

[0105] The 7 main lines and 4 branch lines are pipelines inside the module valve body 3. Among them:

[0106] One end of the first main path 101 is connected to the first opening end 401 on the upper part of the module valve body 3, and the other end is connected to the fifth main path 105; the middle part of the first main path 101 is connected to the first branch path 201, the second branch path 202, the third branch path 203 and the ninth opening end 409 on the side of the module valve body 3;

[0107] One end of the third main path 103 is connected to the fifth opening end 405 on the upper part of the module valve body 3, and the other end is connected to the second main path 102; the middle part of the third main path 103 is connected to the first branch 201, the second branch 202, the third branch 203 and the fourteenth opening end 414 on the side of the module valve body 3.

[0108] The first branch 201 is an air intake path, allowing oxygen-enriched air with an oxygen purity of 93%-95% to enter the two adsorption towers; the two ends of the first branch 201 are respectively connected to the first angle valve 01A and the sixth angle valve 01B on both sides of the module valve body 3; the middle part of the first branch 201 is connected to the first main path 101, the third main path 103, the second opening end 402, the third opening end 403 and the fourth opening end 404 on the upper part of the module valve body 3.

[0109] The second branch 202 is a cleaning gas path, and its two ends are respectively connected to the third angle valve 03A and the eighth angle valve 03B on both sides of the module valve body 3; the middle part of the second branch 202 is connected to the first main path 101, the third main path 103, and the tenth opening end 410 on the side of the module valve body 3.

[0110] The third branch 203 is an oxygen-producing path, and its two ends are respectively connected to the second angle valve 02A and the seventh angle valve 02B on both sides of the module valve body 3; the middle part of the third branch 203 is connected to the first main path 101, the third main path 103, and the eleventh opening end 411 on the side of the module valve body 3.

[0111] One end of the second main path 102 is communicated with the twelfth opening end 412 on the side of the module valve body 3 , and the other end is communicated with the ninth angle valve 04B on the side of the module valve body 3 .

[0112] One end of the fifth main passage 105 is communicated with the fourth angle valve 04A on the side of the module valve body 3 , and the other end is communicated with the fourth main passage 104 .

[0113] One end of the sixth main path 106 is connected to the first plug 501 on the side of the module valve body 3 , and the other end is communicated with the thirteenth opening end 413 on the side of the module valve body 3 .

[0114] One end of the seventh main path 107 is connected to the sixth main path 106 , one end is connected to the eighth opening end 408 on the bottom surface of the module valve body 3 , and the middle part is connected to the fourth branch path 204 .

[0115] One end of the fourth main path 104 is connected to the fifth main path 105 , one end is connected to the sixth opening end 406 on the bottom surface of the module valve body 3 , and the middle part is connected to the fourth branch path 204 .

[0116] The fourth branch 204 is an exhaust gas path, which is used to discharge the waste gas in the two adsorption towers; the two ends of the fourth branch 204 are respectively connected to the fifth angle valve 05A and the tenth angle valve 05B on both sides of the module valve body 3, and the middle part is connected to the seventh main path 107, the fourth main path 104 and the seventh opening end 407 on the bottom surface of the module valve body 3.

[0117] The structure of the middle valve block 2 is as follows Figure 6 As shown, it includes 6 gas lines, 2 shuttle valves, 1 pressure relief valve and 7 open ends.

[0118] Two shuttle valves and one pressure relief valve are respectively located on two side surfaces of the middle valve block 2. Seven opening ends are respectively located on the top surface, the bottom surface, one side surface and one side surface adjacent to the module valve body 3 of the middle valve block 2. Among them:

[0119] The fifteenth opening end 415 is detachably connected to the oxygen buffer tank 10; the sixteenth opening end 416 is detachably connected to the second muffler; the seventeenth opening end 417 is detachably connected to the outlet pipe of the circulation compressor 7; the eighteenth opening end 418 is detachably connected to the third muffler; the nineteenth opening end 419 is detachably connected to the inlet pipe of the circulation compressor 7; the twentieth opening end 420 is selectively connected to the tenth opening end 410 on the module valve body 3; the twenty-first opening end 421 is selectively connected to the eleventh opening end 411 on the module valve body 3.

[0120] The six gas lines are pipelines inside the middle valve block 2. Among them:

[0121] One end of the first gas path 301 is connected to the fifteenth opening end 415 , one end is connected to the fifth gas path 305 , and the middle part is connected to the second gas path 302 .

[0122] One end of the second gas path 302 is communicated with the second shuttle valve 06B, one end is communicated with the seventeenth opening end 417 , and the middle part is communicated with the first gas path 301 and the third gas path 303 .

[0123] One end of the third gas path 303 is connected to the sixteenth opening end 416 , one end is connected to the fourth gas path 304 , and the middle part is connected to the second gas path 302 .

[0124] One end of the fourth gas path 304 is connected to the third gas path 303, one end is connected to the pressure relief valve 01C, and the middle part is connected to the sixth gas path 306. The fourth gas path 304 is connected to the third gas path 303 at the same time as the twentieth opening end 420.

[0125] One end of the sixth gas path 306 is in communication with the fourth gas path 304 , and the other end is in communication with the eighteenth open end 418 .

[0126] One end of the fifth gas path 305 is communicated with the first shuttle valve 06A, one end is communicated with the nineteenth opening end 419 , and the middle part is communicated with the first gas path 301 and the twenty-first opening end 421 .

[0127] The structure of the pressure equalizing valve block 4 is as follows Figure 6 As shown, it includes 1 pipe, 2 open ends and 1 plug.

[0128] The two opening ends are located on a side adjacent to the module valve body 3 , wherein: the twenty-second opening end 422 is selectively connected to the thirteenth opening end 413 on the module valve body 3 ; the twenty-third opening end 423 is selectively connected to the twelfth opening end 412 on the module valve body 3 .

[0129] 1 Pipeline The first pipeline 601 is a pipeline inside the pressure equalizing valve block 4. One end of the first pipeline 601 is connected to the 23rd opening end 423, one end is connected to the second plug 502, and the middle part is connected to the 22nd opening end 422.

[0130] The present application provides an oxygen generator, comprising a first adsorption tower 5, a second adsorption tower 6, a circulating compressor 7 and an oxygen buffer tank 10, which are respectively connected to the above-mentioned oxygen secondary purification module valve, and the logic diagram formed is as follows Figure 8 shown.

[0131] The oxygen purification and oxygen production steps of the oxygen concentrator are as follows:

[0132] Step 1: Open the first angle valve 01A, close other valves, and oxygen-enriched air with an oxygen content of more than 93% enters the first adsorption tower 5, and the first adsorption tower absorbs oxygen. Open the seventh angle valve 02B and the second shuttle valve 06B, close other valves, and recover the pure oxygen gas in the second adsorption tower 6, and enter the oxygen buffer tank 10 after being pressurized by the circulating compressor 7.

[0133] Step 2: Open the seventh angle valve 02B, the second shuttle valve 06B, the third angle valve 03A and the fifth angle valve 05A, and close other valves. Part of the pure oxygen gas produced by the second adsorption tower 6 enters the oxygen buffer tank 10 after being pressurized by the circulation compressor 7, and part enters the first adsorption tower 5 to discharge most of the waste gas.

[0134] Step 3: Open the third angle valve 03A, the fifth angle valve 05A and the first shuttle valve 06A, and close other valves, so that the pure oxygen in the oxygen buffer tank 10 is pressurized by the circulating compressor 7 and then enters the first adsorption tower 5 for washing, and discharges the residual waste gas.

[0135] Step 4: Open the ninth angle valve 04B, the first shuttle valve 06A and the second shuttle valve 06B, close other valves, and allow the pure oxygen gas adsorbed by the first adsorption tower 5 to enter the second adsorption tower 6, and the first adsorption tower 5 and the second adsorption tower 6 are pressurized. The pure oxygen gas in the oxygen buffer tank 10 is pressurized by the circulation compressor 7 and then returns to the oxygen buffer tank 10.

[0136] Step 5: Open the sixth angle valve 01B, close other valves, and oxygen-enriched air with an oxygen content of more than 93% enters the second adsorption tower 6, which adsorbs oxygen. Open the second angle valve 02A and the second shuttle valve 06B, close other valves, and recover the pure oxygen gas in the first adsorption tower 5, which enters the oxygen buffer tank 10 after being pressurized by the circulating compressor 7.

[0137] Step 6: Open the second angle valve 02A, the eighth angle valve 03B, the tenth angle valve 05B and the second shuttle valve 06B, and close other valves. Part of the pure oxygen gas produced by the first adsorption tower 5 enters the oxygen buffer tank 10 after being pressurized by the circulation compressor 7, and part enters the second adsorption tower 6 to discharge most of the waste gas.

[0138] Step 7: Open the eighth angle valve 03B, the tenth angle valve 05B and the first shuttle valve 06A, and close other valves, so that the pure oxygen in the oxygen buffer tank 10 is pressurized by the circulating compressor 7 and then enters the second adsorption tower 6 for washing, and discharges the residual waste gas.

[0139] Step 8: Open the fourth angle valve 04A, the first shuttle valve 06A and the second shuttle valve 06B, and close other valves, so that the pure oxygen gas adsorbed by the second adsorption tower 6 enters the first adsorption tower 5, and the first adsorption tower 5 and the second adsorption tower 6 are pressurized. The pure oxygen gas in the oxygen buffer tank 10 is pressurized by the circulation compressor 7 and then returns to the oxygen buffer tank 10.

[0140] Step 9: Repeat the above steps.

[0141] The valves opened in each step are shown in Table 1:

[0142] Table 1 Oxygen generator valve opening status table

[0143]

[0144]

[0145] In the above steps, all valves except the designated open valve are in closed state.

[0146] According to the above steps, by repeating the cycle, more than 99.5% of oxygen can be produced, and the rest is argon.

[0147] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application is described in detail with reference to the embodiments, a person skilled in the art should understand that any modification or equivalent replacement of the technical solution of the present application does not depart from the spirit and scope of the technical solution of the present application and should be included in the scope of the claims of the present application.

Claims

1. An oxygen secondary purification module valve, characterized in that: The oxygen secondary purification module valve comprises a module valve body (3), a middle valve block (2) and a pressure equalizing valve block (4); the middle valve block (2) and the pressure equalizing valve block (4) are located on the same side of the module valve body (3) and are detachably connected to the module valve body (3); wherein, The modular valve body (3) comprises 7 main circuits, 4 branch circuits, 10 angle valves, 14 opening ends and a first plug (501); The 10 angle valves include a first angle valve (01A), a second angle valve (02A), a third angle valve (03A), a fourth angle valve (04A), a fifth angle valve (05A), a sixth angle valve (01B), a seventh angle valve (02B), an eighth angle valve (03B), a ninth angle valve (04B) and a tenth angle valve (05B), which are respectively located on the top surface, the bottom surface and the left and right sides of the module valve body (3); The 14 opening ends include a first opening end (401), a second opening end (402), a third opening end (403), a fourth opening end (404), a fifth opening end (405), a sixth opening end (406), a seventh opening end (407), an eighth opening end (408), a ninth opening end (409), a tenth opening end (410), an eleventh opening end (411), a twelfth opening end (412), a thirteenth opening end (413) and a fourteenth opening end (414), and the first plug (501) is located on the top surface, the bottom surface, the left and right side surfaces and a side surface adjacent to the middle valve block (2) of the module valve body (3); The seven main paths include a first main path (101), a second main path (102), a third main path (103), a fourth main path (104), a fifth main path (105), a sixth main path (106) and a seventh main path (107); the four branch paths include a first branch path (201), a second branch path (202), a third branch path (203) and a fourth branch path (204), which are pipelines inside the module valve body (3); wherein: One end of the first main path (101) is connected to the first opening end (401) on the upper part of the module valve body (3), and the other end is in communication with the fifth main path (105); the middle part of the first main path (101) is in communication with the first branch path (201), the second branch path (202), the third branch path (203) and the ninth opening end (409) on the side of the module valve body (3); One end of the third main path (103) is connected to the fifth opening end (405) on the upper part of the module valve body (3), and one end is communicated with the second main path (102); the middle part of the third main path (103) is communicated with the first branch path (201), the second branch path (202), the third branch path (203) and the fourteenth opening end (414) on the side of the module valve body (3); The two ends of the first branch (201) are respectively connected to the first angle valve (01A) and the sixth angle valve (01B) on both sides of the module valve body (3); the middle of the first branch (201) is connected to the first main path (101), the third main path (103), the second opening end (402), the third opening end (403) and the fourth opening end (404) on the upper part of the module valve body (3); The two ends of the second branch (202) are respectively connected to the third angle valve (03A) and the eighth angle valve (03B) on both sides of the module valve body (3); the middle of the second branch (202) is connected to the first main path (101), the third main path (103), and the tenth opening end (410) on the side of the module valve body (3); The two ends of the third branch (203) are respectively connected to the second angle valve (02A) and the seventh angle valve (02B) on both sides of the module valve body (3); the middle of the third branch (203) is connected to the first main path (101), the third main path (103), and the eleventh opening end (411) on the side of the module valve body (3); One end of the second main path (102) is in communication with the twelfth opening end (412) on the side of the module valve body (3), and the other end is in communication with the ninth angle valve (04B) on the side of the module valve body (3); One end of the fifth main path (105) is in communication with the fourth angle valve (04A) on the side of the module valve body (3), and the other end is in communication with the fourth main path (104); One end of the sixth main path (106) is connected to the first plug (501) on the side of the module valve body (3), and the other end is communicated with the thirteenth opening end (413) on the side of the module valve body (3); One end of the seventh main path (107) is in communication with the sixth main path (106), one end is in communication with the eighth opening end (408) on the bottom surface of the module valve body (3), and the middle part is in communication with the fourth branch path (204); One end of the fourth main path (104) is in communication with the fifth main path (105), one end is in communication with the sixth opening end (406) on the bottom surface of the module valve body (3), and the middle part is in communication with the fourth branch path (204); The fourth branch (204) is connected at both ends to the fifth angle valve (05A) and the tenth angle valve (05B) on both sides of the module valve body (3), and the middle is connected to the seventh main path (107), the fourth main path (104) and the seventh opening end (407) on the bottom surface of the module valve body (3); The middle valve block (2) includes 6 gas circuits, 2 shuttle valves, a pressure relief valve (01C) and 7 open ends; The two shuttle valves include a first shuttle valve (06A) and a second shuttle valve (06B), and the pressure relief valve (01C) are respectively located on two sides of the middle valve block (2); The seven opening ends include a fifteenth opening end (415), a sixteenth opening end (416), a seventeenth opening end (417), an eighteenth opening end (418), a nineteenth opening end (419), a twentieth opening end (420) and a twenty-first opening end (421), which are respectively located on the top surface, the bottom surface, a side surface and a side surface adjacent to the module valve body (3) of the middle valve block (2); wherein the twentieth opening end (420) is selectively connected to the tenth opening end (410) on the module valve body (3); and the twenty-first opening end (421) is selectively connected to the eleventh opening end (411) on the module valve body (3); The six gas paths include a first gas path (301), a second gas path (302), a third gas path (303), a fourth gas path (304), a fifth gas path (305) and a sixth gas path (306), which are pipelines inside the middle valve block (2); wherein: One end of the first gas path (301) is connected to the fifteenth opening end (415), one end is connected to the fifth gas path (305), and the middle part is connected to the second gas path (302); One end of the second gas path (302) is in communication with the second shuttle valve (06B), one end is in communication with the seventeenth opening end (417), and the middle part is in communication with the first gas path (301) and the third gas path (303); One end of the third gas path (303) is connected to the sixteenth opening end (416), one end is connected to the fourth gas path (304), and the middle part is connected to the second gas path (302); One end of the fourth gas path (304) is in communication with the third gas path (303), one end is in communication with the pressure relief valve (01C), and the middle portion is in communication with the sixth gas path (306); the connection point between the fourth gas path (304) and the third gas path (303) is also in communication with the twentieth opening end (420); One end of the sixth gas path (306) is in communication with the fourth gas path (304), and one end is in communication with the eighteenth opening end (418); One end of the fifth gas path (305) is in communication with the first shuttle valve (06A), one end is in communication with the nineteenth opening end (419), and the middle part is in communication with the first gas path (301) and the twenty-first opening end (421); The pressure equalizing valve block (4) comprises a first pipeline (601), two open ends and a second plug (502); The two opening ends include a twenty-second opening end (422) and a twenty-third opening end (423), which are located on a side adjacent to the module valve body (3), wherein: the twenty-second opening end (422) is selectively connected to the thirteenth opening end (413) on the module valve body (3); the twenty-third opening end (423) is selectively connected to the twelfth opening end (412) on the module valve body (3); The first pipeline (601) is a pipeline inside the pressure equalizing valve block (4); one end of the first pipeline (601) is connected to the twenty-third opening end (423), one end is connected to the second plug (502), and the middle part is connected to the twenty-second opening end (422); All angle valves and shuttle valves are connected to the module valve body (3) and the middle valve block (2) by threaded connection.

2. The oxygen secondary purification module valve according to claim 1, characterized in that: The modular valve body (3), the middle valve block (2) and the pressure equalizing valve block (4) are all roughly rectangular parallelepiped structures.

3. The oxygen secondary purification module valve according to claim 1, characterized in that: The modular valve body (3), the middle valve block (2) and the pressure equalizing valve block (4) are all made of aluminum alloy and are subjected to hard anodizing treatment.

4. An oxygen concentrator, characterized in that: It comprises a first adsorption tower (5), a second adsorption tower (6), a circulating compressor (7) and an oxygen buffer tank (10), and an oxygen secondary purification module valve as claimed in any one of claims 1 to 3; wherein, The first opening end (401) of the oxygen secondary purification module valve is detachably connected to the air inlet pipeline of the first adsorption tower (5); the third opening end (403) is detachably connected to the air inlet pipeline; the fifth opening end is detachably connected to the air inlet pipeline of the second adsorption tower (6); the sixth opening end (406) is detachably connected to the air outlet pipeline of the second adsorption tower (6); the seventh opening end (407) is detachably connected to the first muffler 8; the eighth opening end (408) is detachably connected to the air outlet pipeline of the first adsorption tower (5); the fifteenth opening end (415) is detachably connected to the oxygen buffer tank (10); the seventeenth opening end (417) is detachably connected to the air outlet pipe of the circulation compressor (7); and the nineteenth opening end (419) is detachably connected to the air inlet pipe of the circulation compressor (7).

5. An oxygen production method, implemented based on the oxygen concentrator according to claim 4, the method comprising: Step 1: Open the first angle valve (01A), close other valves, and oxygen-enriched air with an oxygen content of more than 93% enters the first adsorption tower (5), and the first adsorption tower (5) adsorbs oxygen; Open the seventh angle valve (02B) and the second shuttle valve (06B), close the other valves, recover the pure oxygen gas in the second adsorption tower (6), and enter the oxygen buffer tank (10) after being pressurized by the circulation compressor (7); Step 2: Open the seventh angle valve (02B), the second shuttle valve (06B), the third angle valve (03A) and the fifth angle valve (05A), and close the other valves. A portion of the pure oxygen gas produced by the second adsorption tower (6) is pressurized by the circulation compressor (7) and enters the oxygen buffer tank (10), and a portion enters the first adsorption tower (5) to discharge most of the waste gas; Step 3: Open the third angle valve (03A), the fifth angle valve (05A) and the first shuttle valve (06A), and close the other valves, so that the pure oxygen in the oxygen buffer tank (10) is pressurized by the circulating compressor (7) and then enters the first adsorption tower (5) for washing, and discharges the residual waste gas; Step 4: Open the ninth angle valve (04B), the first shuttle valve (06A) and the second shuttle valve (06B), and close the other valves, so that the pure oxygen gas adsorbed by the first adsorption tower (5) enters the second adsorption tower (6), and the first adsorption tower (5) and the second adsorption tower (6) are pressurized; the pure oxygen gas in the oxygen buffer tank (10) is pressurized by the circulation compressor (7) and then returns to the oxygen buffer tank (10); Step 5: Open the sixth angle valve (01B), close other valves, and oxygen-enriched air with an oxygen content of more than 93% enters the second adsorption tower (6), and the second adsorption tower (6) adsorbs oxygen; Open the second angle valve (02A) and the second shuttle valve (06B), close other valves, recover the pure oxygen gas in the first adsorption tower (5), and enter the oxygen buffer tank (10) after being pressurized by the circulation compressor (7); Step 6: Open the second angle valve (02A), the eighth angle valve (03B), the tenth angle valve (05B) and the second shuttle valve (06B), and close the other valves. A portion of the pure oxygen gas produced by the first adsorption tower (5) is pressurized by the circulation compressor (7) and enters the oxygen buffer tank (10), and a portion enters the second adsorption tower (6) to discharge most of the waste gas; Step 7: Open the eighth angle valve (03B), the tenth angle valve (05B) and the first shuttle valve (06A), and close the other valves, so that the pure oxygen in the oxygen buffer tank (10) is pressurized by the circulating compressor (7) and then enters the second adsorption tower (6) for washing, and discharges the residual waste gas; Step 8: Open the fourth angle valve (04A), the first shuttle valve (06A) and the second shuttle valve (06B), and close the other valves, so that the pure oxygen gas adsorbed by the second adsorption tower (6) enters the first adsorption tower (5), and the first adsorption tower (5) and the second adsorption tower (6) are pressurized; the pure oxygen gas in the oxygen buffer tank (10) is pressurized by the circulation compressor (7) and then returns to the oxygen buffer tank (10); Step 9: Repeat the above steps.

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