Hydrogen purification device capable of improving hydrogen concentration and removing impurities in grading manner

Abstract

The utility model provides a hydrogen purification device for improving hydrogen concentration and removing impurities in a grading manner, which comprises a base, a vertical plate, a gas inlet header pipe, a gas guide pipe, a second gas inlet pipe, a first mounting cylinder, a second mounting cylinder and a gas outlet header pipe, wherein the left end and the right end of the bottom of the gas inlet header pipe are respectively provided with a first gas outlet pipe with a first control valve and a second gas outlet pipe with a second control valve; a third air inlet pipe, a fourth air inlet pipe, a third air outlet pipe, a fourth air outlet pipe, a third mounting cylinder and a fourth mounting cylinder. According to the hydrogen purification device capable of improving the hydrogen concentration and removing the impurities in the grading mode, the basic requirement for impurity removal and purification treatment of the hydrogen can be met, when a user cleans one filtering structure, the other filtering structure is used for continuously conducting purification treatment on the hydrogen, and the user experience is improved. Therefore, the influence on the purification efficiency of the hydrogen is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydrogen purification devices, and particularly relates to a hydrogen purification device for improving hydrogen concentration and removing impurities by grading. Background Art

[0002] In the process of preparing hydrogen, a hydrogen purification device is needed to remove smoke and dust mixed in the produced hydrogen, so as to purify the hydrogen and increase the concentration of hydrogen. The existing hydrogen purification device for increasing the concentration of hydrogen and removing impurities by grades can meet the basic needs of hydrogen purification, but after a period of work, a lot of dust will be retained on the filter structure, and the filter structure needs to be cleaned at this time. However, since there is often only one filter structure in the purification device, the user needs to suspend the purification of hydrogen and wait until the filter structure is disassembled, cleaned and reinstalled before continuing to purify the hydrogen. Therefore, it will bring great inconvenience to people's use and affect the overall efficiency of hydrogen purification.

[0003] For example, the invention with publication number CN 115608080 A discloses a hydrogen purification device for improving hydrogen concentration and removing impurities by grades. In the technical solution of this patent, hydrogen can only be filtered and purified by a single filter structure arranged in a processing valve body. When the filter structure needs to be cleaned, the device often needs to be suspended and the device can only be used to continue to purify hydrogen after the filter structure is disassembled, cleaned and reinstalled. Therefore, there is a defect that affects the efficiency of hydrogen purification. Utility Model Content

[0004] In view of this, the utility model aims to improve the hydrogen concentration and graded impurity removal of hydrogen to address the deficiencies in the prior art. It not only meets the basic needs of hydrogen impurity removal and purification, but also enables the user to continue to purify the hydrogen using another filter structure while cleaning one filter structure, thereby avoiding affecting the efficiency of hydrogen purification.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a hydrogen purification device for improving hydrogen concentration and removing impurities by grading, comprising a base, vertical plates are respectively arranged at the left and right side ends of the top of the base, a T-shaped air intake manifold is commonly arranged between the upper ends of the two vertical plates through a first cross bar, a first air outlet pipe with a first control valve and a second air outlet pipe with a second control valve are respectively arranged at the left and right ends of the bottom of the air intake manifold, an I-shaped air guide pipe is commonly arranged between the middle parts of the two vertical plates through a second cross bar, a first air intake pipe with a third control valve and a second air intake pipe with a fourth control valve are respectively arranged on the left and right sides of the upper end of the air guide pipe, and a first primary filter screen is detachably arranged between the first air outlet pipe and the first air intake pipe. A first mounting cylinder with a second primary filter installed on the inner wall is detachably arranged between the second air outlet pipe and the second air inlet pipe, a T-shaped air outlet main pipe is jointly arranged between the lower ends of the two vertical plates through a third cross bar, a third air inlet pipe with a fifth control valve and a fourth air inlet pipe with a sixth control valve are respectively arranged on the left and right sides of the upper part of the air outlet main pipe, a third air outlet pipe with a seventh control valve and a fourth air outlet pipe with an eighth control valve are respectively arranged on the left and right sides of the lower end of the air guide pipe, a third mounting cylinder with a first secondary filter installed on the inner wall is detachably arranged between the third air inlet pipe and the third air outlet pipe, and a fourth mounting cylinder with a second secondary filter installed on the inner wall is detachably arranged between the fourth air inlet pipe and the fourth air outlet pipe.

[0006] As a further improvement of the utility model, the upper end of the first mounting tube is threadedly provided with a first threaded connection sleeve threadedly fixed to the lower end of the first outlet pipe, and the lower end of the first mounting tube is threadedly provided with a second threaded connection sleeve threadedly fixed to the upper end of the first inlet pipe.

[0007] As a further improvement of the utility model, the upper end of the second mounting tube is threadedly provided with a third threaded connection sleeve threadedly fixed to the lower end of the second outlet pipe, and the lower end of the second mounting tube is threadedly provided with a fourth threaded connection sleeve threadedly fixed to the upper end of the second inlet pipe.

[0008] As a further improvement of the utility model, the upper end of the third mounting tube is threadedly provided with a fifth threaded connecting sleeve threadedly fixed to the lower end of the third outlet pipe, and the lower end of the third mounting tube is threadedly provided with a sixth threaded connecting sleeve threadedly fixed to the lower end of the third inlet pipe.

[0009] As a further improvement of the utility model, the upper end of the fourth mounting tube is threadedly provided with a seventh threaded connecting sleeve threadedly fixed to the lower end of the fourth outlet pipe, and the lower end of the fourth mounting tube is threadedly provided with an eighth threaded connecting sleeve threadedly fixed to the lower end of the fourth inlet pipe.

[0010] As a further improvement of the utility model, the outer wall of the first threaded connection sleeve is provided with a first screw rod, the outer wall of the second threaded connection sleeve is provided with a second screw rod, the outer wall of the third threaded connection sleeve is provided with a third screw rod, the outer wall of the fourth threaded connection sleeve is provided with a fourth screw rod, the outer wall of the fifth threaded connection sleeve is provided with a fifth screw rod, the outer wall of the sixth threaded connection sleeve is provided with a sixth screw rod, the outer wall of the seventh threaded connection sleeve is provided with a seventh screw rod, and the outer wall of the eighth threaded connection sleeve is provided with an eighth screw rod.

[0011] As a further improvement of the utility model, a first transparent observation window is arranged on the side wall of the first mounting tube, a second transparent observation window is arranged on the side wall of the second mounting tube, a third transparent observation window is arranged on the side wall of the third mounting tube, and a fourth transparent observation window is arranged on the side wall of the fourth mounting tube.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] First, the user can perform primary filtering and dust removal on the hydrogen through the cooperation of the intake main pipe, the first installation cylinder, and the first primary filter, or perform primary filtering and dust removal on the hydrogen intake through the cooperation of the second installation cylinder and the second primary filter, so the hydrogen can be primary filtered and dust removed continuously by alternating replacement; the user can perform secondary filtering and dust removal on the hydrogen through the cooperation of the third installation cylinder and the first secondary filter, or perform primary filtering and dust removal on the hydrogen intake through the cooperation of the fourth installation cylinder and the second secondary filter, so the hydrogen can be secondary filtered and dust removed continuously by alternating replacement. Therefore, the technical solution of the present application can not only meet the basic needs of impurity removal and purification of hydrogen, but also enable the user to continue to purify the hydrogen using another filter structure while cleaning one filter structure, thereby avoiding affecting the efficiency of hydrogen purification.

[0014] Secondly, through the first threaded connection sleeve and the second threaded connection sleeve, the upper and lower ends of the first mounting tube can be flexibly fixed to the first air outlet pipe and the first air inlet pipe; through the third threaded connection sleeve and the fourth threaded connection sleeve, the upper and lower ends of the second mounting tube can be flexibly fixed to the second air outlet pipe and the second air inlet pipe; through the fifth threaded connection sleeve and the sixth threaded connection sleeve, the upper and lower ends of the third mounting tube can be flexibly fixed to the third air outlet pipe and the third air inlet pipe; through the seventh threaded connection sleeve and the eighth threaded connection sleeve, the upper and lower ends of the fourth mounting tube can be flexibly fixed to the fourth air outlet pipe and the fourth air inlet pipe.

[0015] Third, the user can conveniently perform rotation adjustment on the first threaded connection sleeve, the second threaded connection sleeve, the third threaded connection sleeve, the fourth threaded connection sleeve, the fifth threaded connection sleeve, the sixth threaded connection sleeve, the seventh threaded connection sleeve and the eighth threaded connection sleeve.

[0016] Fourthly, the user can conveniently check the situation inside the first installation tube, can conveniently check the situation inside the second installation tube, can conveniently check the situation inside the third installation tube, and can conveniently check the situation inside the fourth installation tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the air guide pipe, the third control valve, the first air intake pipe, the fourth control valve, the second threaded connection sleeve, the fourth threaded connection sleeve, the fifth threaded connection sleeve, the seventh threaded connection sleeve, the third control valve, the second screw rod, the fourth screw rod, and the seventh screw rod of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the first primary filter screen, the first mounting cylinder, the second primary filter screen, the second mounting cylinder, the first transparent observation window, and the second transparent observation window of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the first secondary filter screen, the third installation cylinder, the second secondary filter screen, the fourth installation cylinder, the third transparent observation window, and the fourth transparent observation window of the utility model.

[0022] In the figure: 100, base; 101, vertical plate; 102, first cross bar; 103, air intake manifold; 104, first control valve; 105, first air outlet pipe; 106, second control valve; 107, second air outlet pipe; 108, second cross bar; 109, air guide pipe; 110, third control valve; 111, first air intake pipe; 112, fourth control valve; 113, second air intake pipe; 114, first primary filter screen; 115, first mounting cylinder; 116, second primary filter screen; 117, second mounting cylinder; 118, third cross bar; 119, air outlet manifold; 120, fifth control valve; 121, third air intake pipe; 122, sixth control valve; 123, fourth air intake pipe; 124, seventh control valve; 125, third air outlet pipe; 126, eighth control valve; 127 , the fourth air outlet pipe; 128, the first secondary filter; 129, the third installation cylinder; 130, the second secondary filter; 131, the fourth installation cylinder; 201, the first threaded connection sleeve; 202, the second threaded connection sleeve; 203, the third threaded connection sleeve; 204, the fourth threaded connection sleeve; 205, the fifth threaded connection sleeve; 206, the sixth threaded connection sleeve; 207, the seventh threaded connection sleeve; 208, the eighth threaded connection sleeve; 301, the first screw rod; 302, the second screw rod; 303, the third screw rod; 304, the fourth screw rod; 305, the fifth screw rod; 306, the sixth screw rod; 307, the seventh screw rod; 308, the eighth screw rod; 309, the first transparent observation window; 310, the second transparent observation window; 311, the third transparent observation window; 312, the fourth transparent observation window. DETAILED DESCRIPTION

[0023] In order to better understand the present invention, the content of the present invention is further clearly described below in conjunction with the embodiments, but the protection content of the present invention is not limited to the following embodiments. In the following description, a large number of specific details are given in order to provide a more thorough understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without one or more of these details.

[0024] like Figure 1 , 2As shown, a hydrogen purification device for improving hydrogen concentration and removing impurities by grading comprises a base 100, wherein vertical plates 101 are respectively arranged at the left and right sides of the top of the base 100, a T-shaped air intake manifold 103 is commonly arranged between the upper ends of the two vertical plates 101 through a first cross bar 102, a first air outlet pipe 105 with a first control valve 104 and a second air outlet pipe 107 with a second control valve 106 are respectively arranged at the left and right ends of the bottom of the air intake manifold 103, an I-shaped air guide pipe 109 is commonly arranged between the middle parts of the two vertical plates 101 through a second cross bar 108, a first air intake pipe 111 with a third control valve 110 and a second air intake pipe 113 with a fourth control valve 112 are respectively arranged on the left and right sides of the upper end of the air guide pipe 109, a first installation cylinder 115 with a first primary filter screen 114 installed on the inner wall is detachably arranged between the first air outlet pipe 105 and the first air intake pipe 111, and the second air outlet pipe 10 A second mounting cylinder 117 with a second primary filter 116 mounted on the inner wall is detachably arranged between the second vertical plates 101 and the second air inlet pipe 113, a T-shaped air outlet main pipe 119 is commonly arranged between the lower ends of the two vertical plates 101 through a third cross bar 118, a third air inlet pipe 121 with a fifth control valve 120 and a fourth air inlet pipe 123 with a sixth control valve 122 are respectively arranged on the left and right sides of the upper portion of the air outlet main pipe 119, a third air outlet pipe 125 with a seventh control valve 124 and a fourth air outlet pipe 127 with an eighth control valve 126 are respectively arranged on the left and right sides of the lower end of the air guide pipe 109, a third mounting cylinder 129 with a first secondary filter 128 mounted on the inner wall is detachably arranged between the third air inlet pipe 121 and the third air outlet pipe 125, and a fourth mounting cylinder 131 with a second secondary filter 130 mounted on the inner wall is detachably arranged between the fourth air inlet pipe 123 and the fourth air outlet pipe 127.

[0025] like Figure 1 As shown, the upper end of the first mounting tube 115 is threadedly provided with a first threaded connection sleeve 201 threadedly fixed to the lower end of the first outlet pipe 105 , and the lower end of the first mounting tube 115 is threadedly provided with a second threaded connection sleeve 202 threadedly fixed to the upper end of the first inlet pipe 111 .

[0026] like Figure 1 As shown, the upper end of the second mounting tube 117 is threadedly provided with a third threaded connection sleeve 203 threadedly fixed to the lower end of the second outlet pipe 107 , and the lower end of the second mounting tube 117 is threadedly provided with a fourth threaded connection sleeve 204 threadedly fixed to the upper end of the second inlet pipe 113 .

[0027] like Figure 1 As shown, the upper end of the third mounting cylinder 129 is threadedly provided with a fifth threaded connection sleeve 205 threadedly fixed to the lower end of the third outlet pipe 125, and the lower end of the third mounting cylinder 129 is threadedly provided with a sixth threaded connection sleeve 206 threadedly fixed to the lower end of the third inlet pipe 121.

[0028] like Figure 1 As shown, the upper end of the fourth mounting cylinder 131 is threadedly provided with a seventh threaded connection sleeve 207 threadedly fixed to the lower end of the fourth outlet pipe 127, and the lower end of the fourth mounting cylinder 131 is threadedly provided with an eighth threaded connection sleeve 208 threadedly fixed to the lower end of the fourth inlet pipe 123.

[0029] It is only necessary to screw and fix the lower end of the first threaded connection sleeve 201 to the upper end of the first installation cylinder 115, and screw and fix the upper end of the first threaded connection sleeve 201 to the lower end of the first outlet pipe 105, and screw and fix the upper end of the second threaded connection sleeve 202 to the lower end of the first installation cylinder 115, and screw and fix the lower end of the second threaded connection sleeve 202 to the upper end of the second inlet pipe 113, so that the upper and lower ends of the first installation cylinder 115 can be flexibly fixed to the first outlet pipe 105 and the first inlet pipe 111; similarly, the third threaded connection sleeve 202 can be screwed and fixed to the lower end of the first installation cylinder 115, and the lower end of the second threaded connection sleeve 202 can be screwed and fixed to the upper end of the second inlet pipe 113. The connecting sleeve 203 and the fourth threaded connecting sleeve 204 can realize flexible fixation of the upper and lower ends of the second mounting tube 117 to the second air outlet pipe 107 and the second air inlet pipe 113; similarly, the fifth threaded connecting sleeve 205 and the sixth threaded connecting sleeve can realize flexible fixation of the upper and lower ends of the third mounting tube 129 to the third air outlet pipe 125 and the third air inlet pipe 121; similarly, the seventh threaded connecting sleeve 207 and the eighth threaded connecting sleeve can realize flexible fixation of the upper and lower ends of the fourth mounting tube 131 to the fourth air outlet pipe 127 and the fourth air inlet pipe 123.

[0030] The user can allow the hydrogen to be purified to enter the air intake manifold 103, and open the first control valve 104, the third control valve 110, the fifth control valve 120, and the seventh control valve 124, and temporarily close the second control valve 106, the fourth control valve 112, the sixth control valve 122, and the eighth control valve 126. Through the cooperation of the air intake manifold 103, the first air outlet pipe 105, the first installation cylinder 115, the first air intake pipe 111, the air guide pipe 109, the third air outlet pipe 125, the third installation cylinder 129, the third air intake pipe 121, the first primary filter 114, and the first secondary filter 128, the hydrogen intake is first filtered and dusted by primary filtration and secondary filtration, so that the dust mixed in the hydrogen is more fully removed by graded filtration. The purified hydrogen will enter the air outlet manifold 119 and leave from the air outlet end of the air outlet manifold 119.

[0031] When it is necessary to clean the first primary filter 114, the corresponding first control valve 104 and the third control valve 110 can be closed, the second control valve 106 and the fourth control valve 112 can be opened, and the primary filtering treatment of hydrogen can be continued through the second installation cylinder 117 and the second primary filter 116; and the first installation cylinder 115 and the first primary filter 114 can be removed for cleaning; similarly, when it is necessary to clean the first secondary filter 128, the corresponding fifth control valve 120 and the seventh control valve 124 can be closed first, the sixth control valve 122 and the eighth control valve 126 can be opened, and the primary filtering treatment of hydrogen can be continued through the fourth installation cylinder 131 and the second secondary filter 130; and the third installation cylinder 129 and the first secondary filter 128 can be removed for cleaning; therefore, the technical solution of the present application can not only meet the basic requirements for impurity removal and purification of hydrogen, but also enable the user to continue to purify the hydrogen using another filter structure when cleaning one filter structure, thereby avoiding affecting the efficiency of hydrogen purification.

[0032] According to another embodiment of the present invention, Figure 1 , 2 As shown, the outer wall of the first threaded connection sleeve 201 is provided with a first screw rod 301, the outer wall of the second threaded connection sleeve 202 is provided with a second screw rod 302, the outer wall of the third threaded connection sleeve 203 is provided with a third screw rod 303, the outer wall of the fourth threaded connection sleeve 204 is provided with a fourth screw rod 304, the outer wall of the fifth threaded connection sleeve 205 is provided with a fifth screw rod 305, the outer wall of the sixth threaded connection sleeve is provided with a sixth screw rod 306, the outer wall of the seventh threaded connection sleeve 207 is provided with a seventh screw rod 307, and the outer wall of the eighth threaded connection sleeve is provided with an eighth screw rod 308.

[0033] According to another embodiment of the present invention, Figure 3 , 4As shown, a first transparent observation window 309 is provided on the side wall of the first mounting tube 115, a second transparent observation window 310 is provided on the side wall of the second mounting tube 117, a third transparent observation window 311 is provided on the side wall of the third mounting tube 129, and a fourth transparent observation window 312 is provided on the side wall of the fourth mounting tube 131. Through the first transparent observation window 309, the situation inside the first mounting cylinder 115 can be easily checked, so that the first mounting cylinder 115 and the first primary filter screen 114 can be cleaned in time; through the second transparent observation window 310, the situation inside the second mounting cylinder 117 can be easily checked, so that the second mounting cylinder 117 and the second primary filter screen 116 can be cleaned in time; through the third transparent observation window 311, the situation inside the third mounting cylinder 129 can be easily checked, so that the third mounting cylinder 129 and the third primary filter screen can be cleaned in time; through the fourth transparent observation window 312, the situation inside the fourth mounting cylinder 131 can be easily checked, so that the fourth mounting cylinder 131 and the fourth primary filter screen can be cleaned in time.

[0034] The above are preferred implementations of the present utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model. These improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A hydrogen purification device for improving hydrogen concentration and removing impurities by graded method, comprising a base (100), characterized in that: The left and right sides of the top of the base (100) are respectively provided with vertical plates (101); a T-shaped air intake manifold (103) is provided between the upper ends of the two vertical plates (101) via a first cross bar (102); a first air outlet pipe (105) with a first control valve (104) and a second air outlet pipe (107) with a second control valve (106) are respectively provided at the left and right ends of the bottom of the air intake manifold (103); a second cross bar (108) is provided between the middle parts of the two vertical plates (101); An I-shaped air guide pipe (109) is provided, and a first air inlet pipe (111) with a third control valve (110) and a second air inlet pipe (113) with a fourth control valve (112) are respectively provided on the left and right sides of the upper end of the air guide pipe (109); a first installation cylinder (115) with a first primary filter screen (114) installed on the inner wall is detachably provided between the first air outlet pipe (105) and the first air inlet pipe (111); and a first installation cylinder (115) with a first primary filter screen (114) installed on the inner wall is detachably provided between the second air outlet pipe (107) and the second air inlet pipe (113). A second installation cylinder (117) having a second primary filter screen (116) installed on the inner wall is disposed on the ground, a T-shaped air outlet main pipe (119) is disposed between the lower ends of the two vertical plates (101) via a third cross bar (118), a third air inlet pipe (121) with a fifth control valve (120) and a fourth air inlet pipe (123) with a sixth control valve (122) are disposed on the left and right sides of the upper part of the air outlet main pipe (119), and a third air inlet pipe (121) with a fifth control valve (120) and a fourth air inlet pipe (123) with a sixth control valve (122) are disposed on the left and right sides of the lower end of the air guide pipe (109). A third air outlet pipe (125) of the seventh control valve (124) and a fourth air outlet pipe (127) with an eighth control valve (126), a third mounting tube (129) with a first secondary filter (128) mounted on the inner wall thereof being detachably arranged between the third air inlet pipe (121) and the third air outlet pipe (125), and a fourth mounting tube (131) with a second secondary filter (130) mounted on the inner wall thereof being detachably arranged between the fourth air inlet pipe (123) and the fourth air outlet pipe (127).

2. The hydrogen purification device for increasing hydrogen concentration and removing impurities by grades as claimed in claim 1, characterized in that: The upper end of the first installation tube (115) is threadedly provided with a first threaded connection sleeve (201) threadedly fixed to the lower end of the first outlet pipe (105), and the lower end of the first installation tube (115) is threadedly provided with a second threaded connection sleeve (202) threadedly fixed to the upper end of the first inlet pipe (111).

3. The hydrogen purification device for increasing hydrogen concentration and removing impurities by grades as claimed in claim 2, characterized in that: The upper end of the second mounting tube (117) is threadedly connected to a third threaded connection sleeve (203) threadedly connected and fixed to the lower end of the second air outlet pipe (107), and the lower end of the second mounting tube (117) is threadedly connected to a fourth threaded connection sleeve (204) threadedly connected and fixed to the upper end of the second air inlet pipe (113).

4. The hydrogen purification device for increasing hydrogen concentration and removing impurities by grades as claimed in claim 3, characterized in that: The upper end of the third installation tube (129) is threadedly provided with a fifth threaded connection sleeve (205) threadedly fixed to the lower end of the third outlet pipe (125), and the lower end of the third installation tube (129) is threadedly provided with a sixth threaded connection sleeve (206) threadedly fixed to the lower end of the third inlet pipe (121).

5. The hydrogen purification device for increasing hydrogen concentration and removing impurities by grades as claimed in claim 4, characterized in that: The upper end of the fourth installation tube (131) is threadedly provided with a seventh threaded connection sleeve (207) threadedly fixed to the lower end of the fourth outlet pipe (127), and the lower end of the fourth installation tube (131) is threadedly provided with an eighth threaded connection sleeve (208) threadedly fixed to the lower end of the fourth inlet pipe (123).

6. The hydrogen purification device for increasing hydrogen concentration and removing impurities by grades as claimed in claim 5, characterized in that: The outer wall of the first threaded connection sleeve (201) is provided with a first screw rod (301), the outer wall of the second threaded connection sleeve (202) is provided with a second screw rod (302), the outer wall of the third threaded connection sleeve (203) is provided with a third screw rod (303), the outer wall of the fourth threaded connection sleeve (204) is provided with a fourth screw rod (304), the outer wall of the fifth threaded connection sleeve (205) is provided with a fifth screw rod (305), the outer wall of the sixth threaded connection sleeve is provided with a sixth screw rod (306), the outer wall of the seventh threaded connection sleeve (207) is provided with a seventh screw rod (307), and the outer wall of the eighth threaded connection sleeve is provided with an eighth screw rod (308).

7. The hydrogen purification device for increasing hydrogen concentration and removing impurities by grades as claimed in claim 6, characterized in that: A first transparent observation window (309) is provided on the side wall of the first installation tube (115), a second transparent observation window (310) is provided on the side wall of the second installation tube (117), a third transparent observation window (311) is provided on the side wall of the third installation tube (129), and a fourth transparent observation window (312) is provided on the side wall of the fourth installation tube (131).

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