Leak-proof pressure swing adsorption nitrogen making device

Abstract

The utility model belongs to the field of adsorption nitrogen generation, and particularly relates to a leakproof pressure swing adsorption nitrogen generation device, a filtering and sealing mechanism comprises a shell, a transverse plate is arranged in the shell and divides the shell into two filtering spaces, and filtering plates are arranged in the filtering spaces and on the end face of the shell in a sliding mode. A first rotary sealing plate and a second rotary sealing plate are rotationally arranged on the two sides of the filter plate in the filter space, a supporting plate is fixedly arranged between one end of the second rotary sealing plate and the side wall of the shell, and when the filter plate is pulled outwards, the first rotary sealing plate and the supporting plate rotationally abut against each other to form a sealing partition for the filter space. By arranging the first rotary sealing plate, the second rotary sealing plate, the second groove and other structures, when the filter plate is pulled away and replaced, the first rotary sealing plate can cut off air in a channel in time, and when the filter plate is installed after being cleaned, air leakage cannot be caused in the filter plate inserting process.

Description

Technical Field

[0001] The utility model belongs to the technical field of adsorption nitrogen production, and in particular relates to a leakage-proof pressure swing adsorption nitrogen production device. Background Art

[0002] During the process of variable pressure nitrogen production, the compressed air entering the main nitrogen production device needs to be filtered. The filter plates required for filtration need to be cleaned and processed after working for a long time. The traditional filter device has poor sealing performance, and the operation of the nitrogen production device needs to be stopped when the filter plates are replaced, which affects the overall nitrogen production work.

[0003] As disclosed in patent application CN202122003638.9, a leak-proof pressure swing adsorption nitrogen production device includes an air compression tank, an air buffer tank, a freeze drying tank and a nitrogen production main tank. The side wall of the air compression tank is connected to the air buffer tank through a first air duct, and the air buffer tank is connected to the freeze drying tank through a second air duct. The freeze drying tank is connected to the nitrogen production main tank through a third air duct. A filter sealing mechanism is provided in the middle of the third air duct. The filter sealing mechanism includes a filter sealing box. The two sides of the filter sealing box are connected to the third air duct by plugging. The inner cavity of the filter sealing box is vertically connected with a first filter screen plate, a second filter screen plate and a third filter screen plate. The top of the filter sealing box is evenly provided with first filter screen plates, second filter screen plates and third filter screen plates. The device of the utility model quickly removes the first filter screen plate, the second filter screen plate and the third filter screen plate for cleaning or replacement.

[0004] In the prior art, a sealing rubber sleeve is provided to seal between the filter plate and the filter slot. However, the sealing rubber sleeve is prone to aging if it is kept inflated for a long time. In addition, the deformation of the sealing rubber sleeve during the inflation process cannot be controlled, which can easily cause leakage, resulting in poor filtering effect.

[0005] Secondly, the existing filter device needs to shut down the nitrogen generator when replacing the sealing plate, so that the nitrogen generator cannot be used for a short period of time, causing inconvenience in nitrogen production and affecting nitrogen production efficiency. Utility Model Content

[0006] To overcome the shortcomings of the prior art, the present invention provides a leak-proof pressure swing adsorption nitrogen generator. By providing a first rotating sealing plate, a second rotating sealing plate, and a second groove, the present invention allows the first rotating sealing plate to promptly isolate the air in the channel when the filter plate is removed for replacement. Furthermore, when the filter plate is installed after cleaning, air leakage will not occur during the insertion process.

[0007] In order to achieve the above-mentioned objectives, the utility model provides the following technical solutions: a leak-proof pressure swing adsorption nitrogen making device, comprising an air supply component, a filter sealing mechanism, and a nitrogen making main tank, characterized in that the air supply component and the filter sealing structure are communicated with each other, the filter sealing structure and the nitrogen making main tank are communicated with each other through a fourth pipe, the filter sealing mechanism comprises a shell, a transverse plate is provided inside the shell, the transverse plate divides the shell into two filter spaces, a filter plate is slidably provided on the end surface of the shell in each of the filter spaces, a first rotating sealing plate and a second rotating sealing plate are rotatably provided on both sides of each filter plate in the filter space, one end of the second rotating sealing plate is fixedly provided with a support plate between the side walls of the shell, and when the filter plate is pulled outward, the first rotating sealing plate and the support plate rotate and abut against each other to form a sealed partition for the filter space.

[0008] Optionally, the air supply assembly includes an air compression tank arranged on one side of the filter sealing structure, the air compression tank is connected to the air buffer tank through a first pipe, the air buffer tank is connected to the freeze drying tank through a second pipe, and the freeze drying tank is connected to the filter sealing mechanism through a third pipe.

[0009] Optionally, a second groove is provided on the end surface of the transverse plate, an elastic sheet is provided in the second groove, and the other end of the elastic sheet is connected to one side of the first rotating sealing plate.

[0010] Optionally, a sealing frame is provided in the shell on a side of the first rotating sealing plate close to the second rotating sealing plate, and a sealing strip is provided on an end surface of the shell on one side of the second rotating sealing plate.

[0011] Optionally, a sealing groove is provided on one side of the second rotating sealing plate, and the sealing groove cooperates with one end of the bottom of the filter plate.

[0012] Optionally, a first rotating shaft is provided on both sides of the first rotating sealing plate, and each of the first rotating shafts is rotatably connected to the side wall of the shell. A second rotating shaft is provided on both sides of the second rotating sealing plate, and each of the second rotating shafts is rotatably connected to the side wall of the shell. One end of one of the second rotating shafts passes through the top wall of the shell and is provided with a rotating disk.

[0013] Optionally, a first through hole is provided on the side wall of the shell between each of the first rotating sealing plate and the second rotating sealing plate, the first through hole is slidably connected to the filter plate, a sealing groove is provided on one side of the first through hole on the side wall of the shell, and a sealing protrusion is provided at one end of the filter plate, and the sealing protrusion cooperates with the sealing groove.

[0014] Optionally, a first sealing gasket is provided in the sealing groove, and a second sealing gasket is provided on one side of the sealing protrusion on the outer side of the filter plate.

[0015] Optionally, two card slots are provided on the two opposite side walls of the sealing groove, two second through holes are symmetrically provided at both ends of the sealing protrusion, a buckle is rotatably provided in the second through hole, a spring is provided on one side of the buckle between the buckle and the inner wall of the second through hole, and one end of each of the buckles is engaged with the card slot.

[0016] In summary, compared with the prior art, the beneficial effects of this solution are:

[0017] (1) The utility model provides a first rotating sealing plate, a second rotating sealing plate, and a second groove, so that when the filter plate is removed and replaced, the first rotating sealing plate can timely isolate the air in the channel to prevent air from leaking to the outside from the first through hole. Moreover, when the filter plate is installed after cleaning, the first rotating sealing plate, the second rotating sealing plate, and the support plate cooperate to prevent air leakage during the insertion of the filter plate, thereby effectively ensuring the filtration quality and filtration efficiency.

[0018] (2) The present invention effectively improves the sealing performance between the rotating parts and the connecting parts by providing the sealing strip, the sealing groove and the first rotating sealing plate, thereby improving the overall sealing performance of the filter sealing mechanism and further improving the filtration quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 A three-dimensional diagram of some components of the utility model;

[0021] Figure 3 for Figure 2 The front view of some components of the utility model;

[0022] Figure 4 for Figure 3 A three-dimensional cross-sectional view at AA;

[0023] Figure 5 A three-dimensional diagram of some components of the utility model;

[0024] Figure 6 A three-dimensional diagram of some components of the utility model;

[0025] Figure 7 for Figure 2 A partial enlarged view of point B in the middle.

[0026] In the figure: air compression tank 10, air buffer tank 11, freeze drying tank 12, filter sealing mechanism 13, nitrogen production main tank 14, first pipe 15, second pipe 16, third pipe 17, fourth pipe 18, shell 19, transverse plate 20, first through hole 21, sealing groove 22, first sealing gasket 23, filter plate 24, sealing protrusion 25, second sealing gasket 26, handle 27, first rotating sealing plate 28, second rotating sealing plate 29, first groove 30, second groove 31, elastic sheet 32, sealing frame 33, support plate 34, sealing groove 35, first rotating shaft 36, second rotating shaft 37, air inlet 38, air outlet 39, sealing strip 40, rotating disk 41, second through hole 42, buckle 43, third rotating shaft 44, spring 45, and slot 46. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Example 1:

[0028] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, a leak-proof pressure swing adsorption nitrogen making device includes an air supply component, a filter sealing mechanism 13, and a nitrogen making main tank 14, characterized in that the air supply component and the filter sealing structure are communicated with each other, and the filter sealing structure and the nitrogen making main tank 14 are communicated with each other through a fourth pipe 18, characterized in that the filter sealing mechanism 13 includes a shell 19, a horizontal plate 20 is provided inside the shell 19, and the horizontal plate 20 divides the shell 19 into two filter spaces, and a filter plate 24 is slidably provided on the end surface of the shell 19 in each filter space, and a first rotating sealing plate 28 and a second rotating sealing plate 29 are rotatably provided on both sides of each filter plate 24 inside the filter space, and a support plate 34 is fixedly provided between the side walls of the shell 19 at one end of the second rotating sealing plate 29, and when the filter plate 24 is pulled outward, the first rotating sealing plate 28 and the support plate 34 rotate and abut against each other to form a sealed partition for the filter space, and a sealing frame 33 is provided in the shell 19 on the side of the first rotating sealing plate 28 close to the second rotating sealing plate 29.

[0029] Specifically, the transverse plate 20 divides the cavity inside the shell 19 into two channels, so that the air entering the shell 19 through the air inlet 38 can be filtered by the filter plate 24 through the channels on both sides of the transverse plate 20 and then discharged from the air outlet 39.

[0030] The sealing frame 33 is made of an elastic sealing material. The setting of the sealing frame 33 can not only limit the first rotating sealing plate 28, but also prevent the first rotating sealing plate 28 from generating a gap with the side wall of the shell 19 under the action of the elastic sheet 32, causing air leakage. The setting of the sealing frame 33 can also improve the sealing effect between the first rotating sealing plate 28 and the inner wall of the shell 19.

[0031] The sealing partition is specifically manifested as follows: both ends of the first rotating sealing plate 28 and the second rotating sealing plate 29 are semicircular with a thickness equal to the diameter thereof, and the rotation axis of the first rotating sealing plate 28 and the second rotating sealing plate 29 is the center of the semicircular cross-section of the end in contact with the transverse plate 20. When the first rotating sealing plate 28 and the second rotating sealing plate 29 rotate, their bottoms are always in close contact with the outer surface of the transverse plate 20. The length of the second rotating sealing plate 29 is less than or equal to the distance between the first rotating sealing plate 28 and the second rotating sealing plate 29. The length of the second rotating sealing plate 29 plus the support plate 34 is equal to the distance between the transverse plate 20 and the upper end surface of the interior of the shell 19, and the distance between the first rotating sealing plate 28 and the second rotating sealing plate 29 is less than the length of the first rotating sealing plate 28 itself.

[0032] The width of the support plate 34 is less than or equal to the width of the inner frame of the sealing frame 33 . The thickness of the support plate 34 plus the first rotating sealing plate 28 should be less than or equal to the thickness of the second rotating sealing plate 29 .

[0033] Further, such as Figure 1 As shown, the air supply assembly includes an air compression tank 10 arranged on one side of the filter sealing structure. The air compression tank 10 is connected to the air buffer tank 11 through a first pipe 15. The air buffer tank 11 is connected to the freeze drying tank 12 through a second pipe 16. The freeze drying tank 12 is connected to the filter sealing mechanism 13 through a third pipe 17.

[0034] Specifically, the air compression tank 10, the air buffer tank 11 and the freeze drying tank 12 are all existing technologies and will not be elaborated in detail in this solution.

[0035] Further, such as Figure 4 As shown, a second groove 31 is provided on the end surface of the transverse plate 20, an elastic piece 32 is provided in the second groove (31), and the other end of the elastic piece 32 is connected to one side of the first rotating sealing plate 28.

[0036] Specifically, the elastic sheet 32 can drive the first rotary sealing plate 28 to rotate along the axis of the first rotating shaft 36.

[0037] Further, such as Figure 2 and Figure 6As shown, a first through hole 21 is provided on the side wall of the shell 19 between each first rotating sealing plate 28 and the second rotating sealing plate 29. The first through hole 21 is slidably connected to the filter plate 24. A sealing groove 22 is provided on the side wall of the shell 19 on one side of the first through hole 21. A sealing protrusion 25 is provided at one end of the filter plate 24. The sealing protrusion 25 cooperates with the sealing groove 22.

[0038] Specifically, when the filter plate 24 is inserted into the sealing groove 22 , the sealing protrusion 25 can be engaged with the sealing groove 22 , so that the gas inside the housing 19 is not easily leaked from between the filter plate 24 and the first through hole 21 .

[0039] Further, such as Figure 2 and Figure 6 As shown, a first sealing gasket 23 is provided in the sealing groove 22 , and a second sealing gasket 26 is provided on one side of the sealing protrusion 25 outside the filter plate 24 .

[0040] Specifically, the first sealing gasket 23 and the second sealing gasket 26 are both made of elastic sealing material. The contact surface of the first sealing gasket 23 and the sealing groove 22 are bonded with sealing glue or other sealing materials, and the contact surface of the second sealing gasket 26 and the sealing protrusion 25 are bonded with sealing glue or other sealing materials. When the filter plate 24 is inserted into the first through hole 21, the sealing protrusion 25 will be embedded in the sealing groove 22. At this time, the first sealing gasket 23 and the second sealing gasket 26 are in close contact, thereby improving the sealing effect between the filter plate 24 and the first through hole 21.

[0041] Further, such as Figure 6 and Figure 7 As shown, two card slots 46 are provided on the two opposite side walls of the sealing groove 22, and two second through holes 42 are symmetrically provided at both ends of the sealing protrusion 25. A card buckle 43 is rotatably provided in the second through hole 42, and a third rotating shaft 44 is provided on both sides of the card buckle 43. Each third rotating shaft 44 is rotatably connected to the side wall of the second through hole 42. A spring 45 is provided on one side of the card buckle 43 between the card buckle 43 and the inner wall of the second through hole 42, and one end of each card buckle 43 is engaged with the card slot 46.

[0042] Specifically, after the filter plate 24 is inserted into the first through hole 21, the sealing protrusion 25 applies pressure to the first sealing gasket 23 and the second sealing gasket 26, causing the sealing protrusion 25 and the second sealing gasket 26 to deform. The deformation of the sealing protrusion 25 and the second sealing gasket 26 will apply a reaction force to the sealing protrusion 25. Due to the cooperation between the buckle 43 and the slot 46, the sealing protrusion 25 can continue to apply pressure to the first sealing gasket 23 and the second sealing gasket 26, thereby improving the sealing effect between the first through hole 21 and the filter plate 24.

[0043] Further, such as Figure 4As shown, a sealing strip 40 is provided on the end surface of the housing 19 on one side of the second rotating sealing plate 29 .

[0044] Specifically, the sealing strip 40 can limit the second rotating sealing plate 29 and the support plate 34 .

[0045] Further, such as Figure 4 and Figure 5 As shown, a sealing groove 35 is provided on one side of the second rotating sealing plate 29 , and the sealing groove 35 cooperates with one end of the bottom of the filter plate 24 .

[0046] Specifically, the sealing groove 35 is provided so that when the filter plate 24 is inserted into the first through hole 21 , the bottom of the filter plate 24 can be snapped into the sealing groove 35 , thereby increasing the sealing effect between the bottom of the filter plate 24 and the second rotating sealing plate 29 .

[0047] Further, such as Figure 5 and Figure 6 As shown, a first rotating shaft 36 is provided on both sides of the first rotating sealing plate 28, and each first rotating shaft 36 is rotatably connected to the side wall of the shell 19. A second rotating shaft 37 is provided on both sides of the second rotating sealing plate 29, and each second rotating shaft 37 is rotatably connected to the side wall of the shell 19. One end of one of the second rotating shafts 37 passes through the top wall of the shell 19 and is provided with a rotating disk 41.

[0048] Specifically, the setting of the rotating disk 41 facilitates the rotation of the second rotating sealing plate 29, so that when the filter plate 24 is inserted into the first through hole 21, the bottom of the filter plate 24 can be against one side of the second rotating sealing plate 29, and the second rotating sealing plate 29 drives the support plate 34 to press one side of the first rotating sealing plate 28, prompting the first rotating sealing plate 28 to rotate, so that air can flow through the filter plate 24 for filtration.

[0049] First, when installing the support plate 34, first rotate the rotating disk 41, the rotating disk 41 drives the second rotating shaft 37 to rotate, and the second rotating shaft 37 drives the second rotating sealing plate 29 to rotate along the axis of the second rotating shaft 37, and the second rotating sealing plate 29 drives the support plate 34 to rotate until one end of the support plate 34 is close to one side of the second rotating sealing plate 29, and then insert the bottom of the filter plate 24 into the first through hole 21, and the bottom of the first through hole 21 will rest against the side of the second rotating sealing plate 29, continue to press the filter plate 24, and the filter plate 24 applies pressure to one side of the second rotating sealing plate 29, prompting the second rotating sealing plate 29 to rotate toward the horizontal plate 20. The second rotating sealing plate 29 rotates and drives the support plate 34 to rotate at the same time. The rotation of the support plate 34 will apply pressure to one side of the first rotating sealing plate 28, thereby driving the first rotating sealing plate 28 to rotate until one side of the first rotating sealing plate 28 and the second rotating sealing plate 29 are in close contact with the end face of the cross plate 20. At this time, the bottom of the filter plate 24 cooperates with the sealing groove 35, and the bottom of the clip 43 is clamped in the slot 46.

[0050] When the filter plate 24 needs to be replaced, it is necessary to press the buckle 43 to rotate the buckle 43 along the third rotating shaft 44 until the bottom of the buckle 43 disengages from the slot 46, and then pull the handle 27. The handle 27 drives the filter plate 24 to disengage from the first through hole 21. During this process, after the bottom of the filter plate 24 disengages from the sealing groove 35, the first rotating sealing plate 28 rotates along the axis of the first rotating shaft 36 under the action of the elastic sheet 32. While the first rotating sealing plate 28 rotates, one side of the first rotating sealing plate 28 applies pressure to one end of the support plate 34, thereby driving the support plate 34 to rotate. The support plate 34 drives the second rotating sealing plate 29 to rotate until one side of the first rotating sealing plate 28 is in close contact with the sealing frame 33 to seal the air channel there.

[0051] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of the components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0052] It should be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or system. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the product or system comprising the element.

[0053] The above description shows and describes several preferred embodiments of the present application. However, as previously mentioned, it should be understood that the present application is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present application can be used in various other combinations, modifications, and environments and can be modified within the scope of the application concept described herein through the above teachings or technology or knowledge in the relevant field. Modifications and changes made by those skilled in the art that do not depart from the spirit and scope of the present application should be protected by the claims appended hereto.

Claims

1. A leak-proof pressure swing adsorption nitrogen generator, comprising a gas supply assembly, a filter sealing mechanism (13), and a nitrogen generator main tank (14), characterized in that: The air supply assembly is communicated with the filter sealing structure, and the filter sealing structure is communicated with the nitrogen production main tank (14) through a fourth pipe (18). The filter sealing mechanism (13) includes a shell (19), a transverse plate (20) is provided inside the shell (19), and the transverse plate (20) divides the shell (19) into two filter spaces. In each of the filter spaces, a filter plate (24) is slidably provided on the end surface of the shell (19). Both sides of each filter plate (24) are rotatably provided with a first rotating sealing plate (28) and a second rotating sealing plate (29) inside the filter space. One end of the second rotating sealing plate (29) is fixedly provided with a support plate (34) between the side walls of the shell (19). When the filter plate (24) is withdrawn outward, the first rotating sealing plate (28) and the support plate (34) rotate and abut against each other to form a sealed partition for the filter space.

2. The leak-proof pressure swing adsorption nitrogen generator according to claim 1, characterized in that: A second groove (31) is provided on the end surface of the transverse plate (20), an elastic piece (32) is provided in the second groove (31), and the other end of the elastic piece (32) is connected to one side of the first rotating sealing plate (28).

3. The leak-proof pressure swing adsorption nitrogen generator according to claim 1, characterized in that: A sealing frame (33) is provided in the housing (19) on one side of the first rotating sealing plate (28) close to the second rotating sealing plate (29), and a sealing strip (40) is provided on the end surface of the housing (19) on one side of the second rotating sealing plate (29).

4. The leak-proof pressure swing adsorption nitrogen generator according to claim 3, characterized in that: A sealing groove (35) is provided on one side of the second rotating sealing plate (29), and the sealing groove (35) cooperates with one end of the bottom of the filter plate (24).

5. The leak-proof pressure swing adsorption nitrogen generator according to claim 4, characterized in that: A first rotating shaft (36) is provided on both sides of the first rotating sealing plate (28), and each of the first rotating shafts (36) is rotatably connected to the side wall of the shell (19). A second rotating shaft (37) is provided on both sides of the second rotating sealing plate (29), and each of the second rotating shafts (37) is rotatably connected to the side wall of the shell (19). One end of one of the second rotating shafts (37) passes through the top wall of the shell (19) and is provided with a rotating disk (41).

6. The leak-proof pressure swing adsorption nitrogen generator according to claim 1, characterized in that: A first through hole (21) is provided on the side wall of the housing (19) between each of the first rotating sealing plate (28) and the second rotating sealing plate (29). The first through hole (21) is slidably connected to the filter plate (24). A sealing groove (22) is provided on one side of the first through hole (21) on the side wall of the housing (19). A sealing protrusion (25) is provided at one end of the filter plate (24). The sealing protrusion (25) and the sealing groove (22) cooperate with each other.

7. The leak-proof pressure swing adsorption nitrogen generator according to claim 6, characterized in that: A first sealing gasket (23) is provided in the sealing groove (22), and a second sealing gasket (26) is provided on one side of the sealing protrusion (25) outside the filter plate (24).

8. The leak-proof pressure swing adsorption nitrogen generator according to claim 7, characterized in that: Two clamping grooves (46) are provided on two opposite side walls of the sealing groove (22), two second through holes (42) are symmetrically provided at both ends of the sealing protrusion (25), a buckle (43) is rotatably provided in the second through hole (42), a spring (45) is provided on one side of the buckle (43) between the buckle (43) and the inner side wall of the second through hole (42), and one end of each buckle (43) is engaged with the clamping groove (46).

Images