Oxygen secondary purification module valve and oxygen generator

Abstract

The utility model provides an oxygen secondary purification module valve and an oxygen generator. 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 application belongs to the technical field of oxygen generator, and particularly relates to an oxygen secondary purification module valve and an oxygen generator. BACKGROUND

[0002] The secondary purification oxygen generating device is used for secondary purification of oxygen-rich gas with an oxygen content of 93%-95% generated by the PSA method, discharging argon, and obtaining oxygen with an oxygen purity of greater than 99.5%.

[0003] The existing secondary purification oxygen generating device is generally composed of an adsorption tower, a pneumatic valve, a silencer, a circulating compressor and the like, and the components are connected by gas guide pipelines. When the gas guide pipelines are connected, the stainless steel pipes need to be cut into corresponding sizes, and then welded with elbows, tees and the like to form continuous pipelines, and then welded with union joints, and then connected by threads. As described in the Chinese patent application CN117582780A.

[0004] In the processing of the gas guide pipeline, the stainless steel pipe needs to be subjected to complicated processing such as cutting and welding, and problems such as pipeline deformation, inaccurate size or gas leakage are prone to occur. In addition, due to the influence of the sizes of the union joint, the elbow and the tee and the size of the adsorption tower, the gas guide pipeline valve group has problems such as complex structure, messy gas pipes and large space occupation. In terms of assembly, the conventional gas guide valve group has problems such as many joints, long assembly time, and difficult maintenance and replacement of shuttle valves. CONTENT OF THE UTILITY MODEL

[0005] The application aims to overcome the defects of complex structure and inconvenience in installation caused by the existing setting of multiple groups of valves with different functions.

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

[0007] The module valve body 3 comprises 7 main lines, 4 branch lines, 10 angle valves, 14 open 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 two side surfaces of the module valve body 3;

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

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

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

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

[0013] Both ends of the first branch road 201 are communicated with the first angle valve 01A and the sixth angle valve 01B on both sides of the module valve body 3 respectively;The middle part of the first branch road 201 is communicated with the first main road 101, the third main road 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;

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

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

[0016] The second main road 102 is in communication with the twelfth open end 412 on the side of the module valve body 3 at one end and the ninth angle valve 04B on the side of the module valve body 3 at one end;

[0017] The fifth main road 105 is in communication with the fourth angle valve 04A on the side of the module valve body 3 at one end and the fourth main road 104 at one end;

[0018] The sixth main road 106 is connected with the first plug 501 on the side of the module valve body 3 at one end and the thirteenth open end 413 on the side of the module valve body 3 at one end;

[0019] The seventh main road 107 is in communication with the sixth main road 106 at one end and the eighth open end 408 on the bottom of the module valve body 3 at one end, and is in communication with the fourth branch road 204 in the middle;

[0020] The fourth main road 104 is in communication with the fifth main road 105 at one end and the sixth open end 406 on the bottom of the module valve body 3 at one end, and is in communication with the fourth branch road 204 in the middle;

[0021] The fourth branch road 204 is in communication with the fifth angle valve 05A and the tenth angle valve 05B on the two sides of the module valve body 3 at both ends, and is in communication with the seventh main road 107, the fourth main road 104 and the seventh open end 407 on the bottom of the module valve body 3 in the middle;

[0022] The middle valve block 2 contains 6 gas roads, 2 shuttle valves, a 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 are located on the two sides of the middle valve block 2 respectively with the pressure relief valve 01C;

[0024] The seven open ends include a fifteenth open end 415, a sixteenth open end 416, a seventeenth open end 417, an eighteenth open end 418, a nineteenth open end 419, a twentieth open end 420 and a twenty-first open end 421, which are 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 respectively; wherein the twentieth open end 420 is selectively in communication with the tenth open end 410 on the module valve body 3; the twenty-first open end 421 is selectively in communication with the eleventh open end 411 on the module valve body 3;

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

[0026] The first gas road 301 is in communication with the fifteenth open end 415 at one end and the fifth gas road 305 at one end, and is in communication with the second gas road 302 in the middle;

[0027] The second gas path 302 is in communication with the second shuttle valve 06B at one end, in communication with the seventeenth open end 417 at one end, and in communication with the first gas path 301 and the third gas path 303 in the middle;

[0028] The third gas path 303 is in communication with the sixteenth open end 416 at one end, in communication with the fourth gas path 304 at one end, and in communication with the second gas path 302 in the middle;

[0029] The fourth gas path 304 is in communication with the third gas path 303 at one end, in communication with the pressure relief valve 01C at one end, and in communication with the sixth gas path 306 in the middle; the fourth gas path 304 is in communication with the twentieth open end 420 at the same time as being in communication with the third gas path 303;

[0030] The sixth gas path 306 is in communication with the fourth gas path 304 at one end, and in communication with the eighteenth open end 418 at one end;

[0031] The fifth gas path 305 is in communication with the first shuttle valve 06A at one end, in communication with the nineteenth open end 419 at one end, and in communication with the first gas path 301 and the twenty-first open end 421 in the middle;

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

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

[0034] The first pipe 601 is a pipe inside the pressure equalizing valve block 4; the first pipe 601 is in communication with the twenty-third open end 423 at one end, connected with the second plug 502 at one end, and in communication with the twenty-second open end 422 in the middle.

[0035] As an improvement of the above-mentioned oxygen secondary purification module valve, the module valve body 3, the middle valve block 2, and the pressure equalizing valve block 4 are all substantially cuboid structures.

[0036] As an improvement of the above-mentioned 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 are subjected to hard anodizing treatment.

[0037] The application also provides an oxygen generator, which comprises 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,

[0038] The first open end 401 of the oxygen secondary purification module valve is detachably connected with the air inlet pipeline of the first adsorption tower 5; the third open end 403 is detachably connected with the air inlet pipeline; the fifth open end is detachably connected with the air inlet pipeline of the second adsorption tower 6; the sixth open end 406 is detachably connected with the air outlet pipeline of the second adsorption tower 6; the seventh open end 407 is detachably connected with the first silencer 8; the eighth open end 408 is detachably connected with the air outlet pipeline of the first adsorption tower 5; the fifteenth open end 415 is detachably connected with the oxygen buffer tank 10; the seventeenth open end 417 is detachably connected with the air outlet pipe of the circulating compressor 7; and the nineteenth open end 419 is detachably connected with the air inlet pipe of the circulating compressor 7.

[0039] Compared with the prior art, the advantages of the present application are that:

[0040] 1. The intake valve group, the cleaning valve group, the oxygen production valve group, the pressure equalization valve group, the exhaust valve group, the oxygen absorption valve group and the oxygen supply valve group are integrated with the pipeline, solving the problems of complex processing and installation of conventional gas guide pipeline valve groups:

[0041] 2. In the processing process, there is no need for complicated processing such as cutting and welding of stainless steel pipes, and there is no problem of pipeline deformation, size inaccuracy or gas leakage;

[0042] 3. There is no influence of the sizes of standard parts such as joints, elbows and tees on the size of the adsorption tower, the gas guide pipeline valve group structure is simple, there is no messy arrangement of air pipes, and the space occupied is small.

[0043] 4. In terms of assembly, there is no problem of long assembly time, difficult maintenance and replacement of shuttle valves existing in conventional gas guide valve groups. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 The oxygen secondary purification module valve structure is shown;

[0045] Figure 2 The top view of the oxygen secondary purification module valve is shown;

[0046] Figure 3 The bottom view of the oxygen secondary purification module valve is shown;

[0047] Figure 4 The perspective view of the module valve body is shown, which identifies 7 main paths, 4 branch paths and surrounding corner valves inside;

[0048] Figure 5 The perspective view of the module valve body is shown, which identifies the surrounding open ends;

[0049] Figure 6 The perspective view of the middle valve block is shown;

[0050] Figure 7 Figure 2 shows a perspective view of the pressure equalizing valve block;

[0051] Figure 8 Figure 3 shows a logic diagram of the connection of various components of the oxygen generator.

[0052] The figure legend is as follows:

[0053] 2, middle valve block 3, module valve body

[0054] 4, pressure equalizing valve block 5, first adsorption tower

[0055] 6, second adsorption tower 7, circulating compressor

[0056] 8, first silencer 9, fourth silencer

[0057] 10, oxygen buffer tank

[0058] 101, first main road 102, second main road

[0059] 103, third main road 104, fourth main road

[0060] 105, fifth main road 106, sixth main road

[0061] 107, seventh main road 201, first branch road

[0062] 202, second branch road 203, third branch road

[0063] 204, fourth branch road

[0064] 301, first gas road 302, second gas road

[0065] 303, third gas road 304, fourth gas road

[0066] 305, fifth gas road 306, sixth gas road

[0067] 01A, first angle valve 02A, second angle valve

[0068] 03A, third angle valve 04A, fourth angle valve

[0069] 05A, fifth angle valve 06A, first shuttle valve

[0070] 01B, sixth angle valve 02B, seventh angle valve

[0071] 03B, eighth angle valve 04B, ninth angle valve

[0072] 05B, tenth angle valve 06B, second shuttle valve

[0073] 01C, pressure relief valve

[0074] 401, first open end 402, second open end

[0075] 403, third open end 404, fourth open end

[0076] 405, fifth open end 406, sixth open end

[0077] 407, seventh open end 408, eighth open end

[0078] 409, ninth open end 410, tenth open end

[0079] 411, eleventh open end 412, twelfth open end

[0080] 413, thirteenth open end 414, fourteenth open end

[0081] 415, fifteenth open end 416, sixteenth open end

[0082] 417, seventeenth open end 418, eighteenth open end

[0083] 419, nineteenth open end 420, twentieth open end 421, twenty-first open end 422, twenty-second open end

[0084] 423, twenty-third open end

[0085] 501, first plug 502, second plug

[0086] 601, first pipeline DETAILED DESCRIPTION

[0087] The technical solutions of the present application will be described in detail below with reference to the accompanying drawings.

[0088] The oxygen secondary purification module valve provided by the present application integrates a pipeline and an angle valve on a valve plate, realizes the on-off of the pipeline through reciprocating movement of the angle valve core, and the connection between the angle valve and the valve plate and the connection between the shuttle valve and the valve plate are mainly through screwing, the angle valve and the shuttle valve are convenient to replace, the pipeline interfaces are reduced, and installation and maintenance are facilitated.

[0089] As shown in Figure 1 , Figure 2 , Figure 3 The oxygen secondary purification module valve includes a module valve body 3, a middle valve block 2 and an equalizing valve block 4. The module valve body 3, the middle valve block 2 and the equalizing valve block 4 are all substantially cuboid structures, are made of aluminum alloy and are subjected to hard anodizing. The middle valve block 2 and the equalizing valve block 4 are located on the same side of the module valve body 3 and are detachably connected with the module valve body 3.

[0090] The structure of the module valve body 3 is shown in Figure 4 、 Figure 5 It contains 7 main roads, 4 branch roads, 10 corner valves, 14 open ends and a first plug 501.

[0091] The 10 corner valves are respectively located on the left and right sides of the module valve body 3. The 14 open ends and the first plug 501 on the module valve body 3 are located on the top, bottom, left and right sides of the module valve body 3 and one side adjacent to the middle valve block 2. Among them:

[0092] The first open end 401 is detachably connected with the gas inlet pipeline of the first adsorption tower 5; the second open end 402 is detachably connected with the first sensor; the third open end 403 is detachably connected with the air inlet pipeline; the fourth open end 404 is detachably connected with the second sensor; the fifth open end 405 is detachably connected with the gas inlet pipeline of the second adsorption tower 6; the sixth open end 406 is detachably connected with the gas outlet pipeline of the second adsorption tower 6; the seventh open end 407 is detachably connected with the first muffler 8; the eighth open end 408 is detachably connected with the gas outlet pipeline of the first adsorption tower 5; the ninth open end 409 is detachably connected with the third sensor; the tenth open end 410 and the eleventh open end 411 are both detachably connected with the middle valve block 2; the twelfth open end 412 and the thirteenth open end 413 are both detachably connected with the pressure equalizing valve block 4; and the fourteenth open end 414 is detachably connected with the fourth sensor.

[0093] The 7 main roads and 4 branch roads are pipelines inside the module valve body 3. Among them:

[0094] One end of the first main road 101 is connected with the first open end 401 on the upper part of the module valve body 3, and the other end is connected with the fifth main road 105; the middle part of the first main road 101 is connected with the first branch road 201, the second branch road 202, the third branch road 203 and the ninth open end 409 on the side of the module valve body 3;

[0095] One end of the third main road 103 is connected with the fifth open end 405 on the upper part of the module valve body 3, and the other end is connected with the second main road 102; the middle part of the third main road 103 is connected with the first branch road 201, the second branch road 202, the third branch road 203 and the fourteenth open end 414 on the side of the module valve body 3.

[0096] The first branch road 201 is a gas inlet pipeline, which makes the oxygen-enriched air with an oxygen purity of 93%-95% enter the two adsorption towers; the two ends of the first branch road 201 are connected with the first corner valve 01A and the sixth corner valve 01B on the left and right sides of the module valve body 3 respectively; the middle part of the first branch road 201 is connected with the first main road 101, the third main road 103, the second open end 402, the third open end 403 and the fourth open end 404 on the upper part of the module valve body 3.

[0097] The second branch 202 is a cleaning gas path, and two ends thereof are connected to the third angle valve 03A and the eighth angle valve 03B on the two sides of the module valve body 3 respectively; the middle part of the second branch 202 is connected to the first main path 101, the third main path 103, and the tenth open end 410 on the side of the module valve body 3.

[0098] The third branch 203 is an oxygen production gas path, and two ends thereof are connected to the second angle valve 02A and the seventh angle valve 02B on the two sides of the module valve body 3 respectively; the middle part of the third branch 203 is connected to the first main path 101, the third main path 103, and the eleventh open end 411 on the side of the module valve body 3.

[0099] The second main path 102 is connected to the twelfth open end 412 on the side of the module valve body 3 at one end and connected to the ninth angle valve 04B on the side of the module valve body 3 at one end.

[0100] The fifth main path 105 is connected to the fourth angle valve 04A on the side of the module valve body 3 at one end and connected to the fourth main path 104 at one end.

[0101] The sixth main path 106 is connected to the first plug 501 on the side of the module valve body 3 at one end and connected to the thirteenth open end 413 on the side of the module valve body 3 at one end.

[0102] The seventh main path 107 is connected to the sixth main path 106 at one end, connected to the eighth open end 408 on the bottom surface of the module valve body 3 at one end, and connected to the fourth branch 204 in the middle part.

[0103] The fourth main path 104 is connected to the fifth main path 105 at one end, connected to the sixth open end 406 on the bottom surface of the module valve body 3 at one end, and connected to the fourth branch 204 in the middle part.

[0104] The fourth branch 204 is an exhaust gas path for discharging waste gas in the two adsorption towers; the two ends of the fourth branch 204 are connected to the fifth angle valve 05A and the tenth angle valve 05B on the two sides of the module valve body 3 respectively, and the middle part is connected to the seventh main path 107, the fourth main path 104, and the seventh open end 407 on the bottom surface of the module valve body 3.

[0105] The structure of the middle valve block 2 is shown in Figure 6 The middle valve block 2 contains 6 gas paths, 2 shuttle valves, 1 pressure relief valve, and 7 open ends.

[0106] The two shuttle valves and the one pressure relief valve are respectively located on the two side surfaces of the middle valve block 2. The seven open 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:

[0107] 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 air 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 air inlet pipe of the circulation compressor 7; the twentieth opening end 420 is selectively communicated with the tenth opening end 410 on the module valve body 3; and the twenty-first opening end 421 is selectively communicated with the eleventh opening end 411 on the module valve body 3.

[0108] The sixth gas path is a pipeline in the middle valve block 2, wherein:

[0109] The first gas path 301 is communicated with the fifteenth opening end 415 at one end, communicated with the fifth gas path 305 at one end, and communicated with the second gas path 302 in the middle.

[0110] The second gas path 302 is communicated with the second shuttle valve 06B at one end, communicated with the seventeenth opening end 417 at one end, and communicated with the first gas path 301 and the third gas path 303 in the middle.

[0111] The third gas path 303 is communicated with the sixteenth opening end 416 at one end, communicated with the fourth gas path 304 at one end, and communicated with the second gas path 302 in the middle.

[0112] The fourth gas path 304 is communicated with the third gas path 303 at one end, communicated with the pressure relief valve 01C at one end, and communicated with the sixth gas path 306 in the middle. The fourth gas path 304 is also communicated with the twentieth opening end 420 at the position where it is communicated with the third gas path 303.

[0113] The sixth gas path 306 is communicated with the fourth gas path 304 at one end, and communicated with the eighteenth opening end 418 at one end.

[0114] The fifth gas path 305 is communicated with the first shuttle valve 06A at one end, communicated with the nineteenth opening end 419 at one end, and communicated with the first gas path 301 and the twenty-first opening end 421 in the middle.

[0115] The structure of the pressure equalizing valve block 4 is shown in Figure 7 The pressure equalizing valve block 4 contains one pipeline, two opening ends and one plug.

[0116] The two opening ends are located on the side adjacent to the module valve body 3, wherein: the twenty-second opening end 422 is selectively communicated with the thirteenth opening end 413 on the module valve body 3; and the twenty-third opening end 423 is selectively communicated with the twelfth opening end 412 on the module valve body 3.

[0117] 1st pipeline first pipeline 601 is the pipeline inside the equalizing valve block 4. One end of the first pipeline 601 is in communication with the twenty-third open end 423, one end is connected with the second plug 502, and the middle part is in communication with the twenty-second open end 422.

[0118] The application provides an oxygen generator, which comprises a first adsorption tower 5, a second adsorption tower 6, a circulating compressor 7 and an oxygen buffer tank 10, which are respectively connected with the oxygen secondary purification module valve, and a logic diagram is formed as shown in the figure. Figure 8

[0119] The purification oxygen production steps of the oxygen generator are as follows:

[0120] Step 1: open the first angle valve 01A, close other valves, and the 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, and recover the pure oxygen gas in the second adsorption tower 6, which is pressurized by the circulating compressor 7 and then enters the oxygen buffer tank 10.

[0121] Step 2: open the seventh angle valve 02B, the second shuttle valve 06B, the third angle valve 03A and the fifth angle valve 05A, close other valves, and part of the pure oxygen gas produced by the second adsorption tower 6 is pressurized by the circulating compressor 7 and then enters the oxygen buffer tank 10, and part of the pure oxygen gas enters the first adsorption tower 5 to discharge most of the waste gas.

[0122] Step 3: open the third angle valve 03A, the fifth angle valve 05A and the first shuttle valve 06A, 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 to wash and discharge residual waste gas.

[0123] Step 4: open the ninth angle valve 04B, the first shuttle valve 06A and the second shuttle valve 06B, 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 equalized. The pure oxygen gas in the oxygen buffer tank 10 is pressurized by the circulating compressor 7 and then returned to the oxygen buffer tank 10.

[0124] Step 5: open the sixth angle valve 01B, close other valves, and the 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, which is pressurized by the circulating compressor 7 and then enters the oxygen buffer tank 10.

[0125] ​Step 6: open the second angle valve 02A, the eighth angle valve 03B, the tenth angle valve 05B and the second shuttle valve 06B, close other valves, part of the pure oxygen gas produced by the first adsorption tower 5 is pressurized by the circulating compressor 7 and enters the oxygen buffer tank 10, and part of it enters the second adsorption tower 6 to discharge most of the waste gas.

[0126] Step 7: open the eighth angle valve 03B, the tenth angle valve 05B and the first shuttle valve 06A, close other valves, make the pure oxygen in the oxygen buffer tank 10 pressurized by the circulating compressor 7 and enter the second adsorption tower 6 to purge and discharge residual waste gas.

[0127] Step 8: open the fourth angle valve 04A, the first shuttle valve 06A and the second shuttle valve 06B, close other valves, make the pure oxygen gas adsorbed by the second adsorption tower 6 enter the first adsorption tower 5, and the first adsorption tower 5 and the second adsorption tower 6 are equalized. The pure oxygen gas in the oxygen buffer tank 10 is pressurized by the circulating compressor 7 and returned to the oxygen buffer tank 10.

[0128] Step 9: cycle the above steps.

[0129] The valves opened in each step are shown in Table 1:

[0130] Table 1: Oxygen generator valve opening table

[0131]

[0132]

[0133] The valves other than the specified open valves in the above steps are all closed.

[0134] According to the above steps, the above steps are cycled, and more than 99.5% of oxygen gas and the rest of argon gas can be produced.

[0135] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the examples, those skilled in the art should understand that modifications or equivalent replacements to the technical solutions of the present application do not deviate from the spirit and scope of the present application, and they should be covered in the scope of the claims of the present application.

Claims

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

2. The oxygen polishing module valve of claim 1, wherein, The module valve body (3), the middle valve block (2) and the equalizing valve block (4) are all substantially cuboid structures.

3. The oxygen polishing module valve of claim 1, wherein, The module valve body (3), the middle valve block (2) and the equalizing valve block (4) are all made of aluminum alloy and subjected to hard anodizing treatment.

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

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