Multi-stage filtering assembly for preparing clean nitrogen

Abstract

The utility model discloses a multistage filter component for preparing clean nitrogen, which comprises a filter body, a fixed ring groove is arranged on an inner base of the filter body, a fixed cover is inserted in the fixed ring groove, the top end of the fixed cover is connected with a filter element body, a metal pore plate layer is arranged in the filter element body, and the metal pore plate layer is connected with the filter element body. The exterior of the metal pore plate layer is sequentially connected with a high-temperature-resistant non-woven fabric layer, an activated carbon adsorption layer, a burnt epoxy resin adsorption filter layer and a titanium rod filter layer. According to the utility model, by arranging the multiple filtering structures, atmosphere enters the primary filtering net on one side of the filtering core body in the filter body to be in contact, air enters the metal pore plate layer in the filtering core body through the primary filtering net to be in contact, and the air is condensed and filtered on the metal pore plate layer and the high-temperature-resistant non-woven fabric layer when being cooled; air is re-adsorbed through the activated carbon adsorption layer, grease and the like in the air are adsorbed through the burnt epoxy resin adsorption filter layer and the titanium rod filter layer, and therefore the multiple filtering function is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of filter components, in particular to a multi-stage filter component for preparing clean nitrogen. Background Art

[0002] Nitrogen is mainly produced by separating or decomposing nitrogen-containing compounds from the atmosphere. Common methods for preparing nitrogen include liquid air distillation, cryogenic separation, membrane separation, pressure swing adsorption, pressure swing absorption, etc. Since nitrogen accounts for 4 / 5 of the atmosphere, that is, more than 78% of the atmosphere, we can use it almost unlimitedly.

[0003] When making nitrogen, a filter is needed to filter the air. The nitrogen generator needs to separate the oxygen and nitrogen in the air. The air contains a lot of impurities, such as moisture, grease, particles, etc. These impurities will affect the purity and stability of the nitrogen. In order to ensure that the nitrogen produced by the nitrogen generator is higher in purity and more stable, we propose a multi-stage filter component for the preparation of clean nitrogen to improve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-stage filter assembly for preparing clean nitrogen to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-stage filter component for preparing clean nitrogen, comprising a filter body, the internal base of the filter body is provided with a fixed ring groove, a fixed cover is inserted in the fixed ring groove, the top of the fixed cover is connected to a filter core body, a preliminary filter screen is installed on one side of the filter core body, a metal perforated plate layer is provided inside the filter core body, and a high-temperature resistant non-woven fabric layer, an activated carbon adsorption layer, a burnt epoxy resin adsorption filter layer, and a titanium rod filter layer are connected to the outside of the metal perforated plate layer in sequence, an outer sealing ring is provided on the top of the fixed cover, an air inlet is installed on one side of the filter body, and an air outlet is installed on the other side of the filter body.

[0006] Preferably, the preliminary filter screen on one side of the filter core is connected to the air inlet on one side of the filter body, and the filter core is installed inside the filter body by inserting the fixing cover into the fixing ring groove.

[0007] Preferably, the metal porous plate layer, high temperature resistant non-woven fabric layer, activated carbon adsorption layer, epoxy resin adsorption filter layer, and titanium rod filter layer are sequentially arranged inside the filter core, and the preliminary filter screen passes through the filter core and is connected to the metal porous plate layer.

[0008] Preferably, a flange joint is provided on the outer surface of the filter body, a fixing knob is inserted into the inner part of the flange joint, and a pressure gauge is installed on the top of the filter body.

[0009] Preferably, a sewage collecting area is provided at the inner bottom end of the filter body, a hydrophobic layer is provided on the inner wall of the bottom end of the filter body, a sewage outlet is provided at the bottom of the filter body, and a sewage valve is installed at the bottom of the sewage outlet.

[0010] Preferably, the sewage outlet is connected to the sewage collection area through a filter body, the hydrophobic layer is attached to the inner wall of the sewage collection area, and the sewage valve is installed at the bottom of the sewage outlet.

[0011] Preferably, a refrigeration box body is installed at the rear end of the filter body, a heat dissipation hole is opened on one side of the refrigeration box body, a heat dissipation fan is installed inside the refrigeration box body, a refrigeration fin is installed at the rear end of the filter body, and a heat absorption surface is provided on one side of the refrigeration fin.

[0012] Preferably, the refrigeration plate is attached to the rear end of the filter body, a heat absorbing surface is provided on one side of the refrigeration plate, the heat dissipation fan is installed inside the refrigeration box body and contacts the heat absorbing surface, and the heat dissipation fan is connected to the outside through the heat dissipation hole on one side of the refrigeration box body.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the multi-stage filter assembly for preparing clean nitrogen not only realizes multiple filtering functions and the function of draining waste residue, but also realizes the refrigeration function;

[0014] (1) By setting a multiple filtering structure, the utility model is beneficial in that: when in use, the atmosphere enters the filter body through the air inlet on one side of the filter body, contacts the preliminary filter screen on one side of the filter core body, and performs preliminary filtering on the air. Then, the air enters the metal perforated plate layer inside the filter core body through the preliminary filter screen, contacts the metal perforated plate layer, and is pre-cooled and condensed on the metal perforated plate layer. After the air enters the high-temperature resistant non-woven fabric layer to filter the water vapor, the air is adsorbed by the activated carbon adsorption layer, and then the oil and fat in the air are adsorbed by the burnt epoxy resin adsorption filter layer and the titanium rod filter layer to purify the air, thereby realizing multiple filtering functions;

[0015] (2) By setting up the lower sewage discharge residual structure, the utility model has the following advantages: when in use, after the filter core inside the filter body filters the air, part of the impurities will enter the sewage collection area at the bottom of the filter body. The hydrophobic layer on the inner wall of the sewage collection area can reduce the sewage from adhering to the inside of the filter body. By opening the sewage discharge valve of the sewage discharge port at the bottom of the filter body, the sewage inside the sewage collection area is discharged from the sewage discharge valve through the sewage discharge port, thereby realizing the lower sewage discharge residual function;

[0016] (3) By setting up a refrigeration structure, the utility model has the following advantages: when in use, the refrigeration plate is energized to absorb heat from the surface of the filter body, and the heat is transferred to the heat-absorbing surface. The heat dissipation fan on one side of the heat-absorbing surface will discharge the heat through the heat dissipation holes on one side of the refrigeration box body, so that the surface temperature of the filter body is reduced to facilitate the separation of water vapor in the air inside the filter body, thereby realizing the refrigeration function. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the filter body of the utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the filter core of the utility model;

[0020] Figure 4 It is a schematic diagram of the enlarged structure of a partial cross section of the filter core of the utility model;

[0021] Figure 5 It is a schematic diagram of the cross-sectional structure of the dirt collection area of ​​the filter body of the utility model;

[0022] Figure 6 It is a schematic diagram of the side cross-sectional structure of the filter body and the refrigeration box body of the utility model.

[0023] In the figure: 1. Air inlet; 2. Flange joint; 3. Filter body; 4. Pressure gauge; 5. Fixed knob; 6. Air outlet; 7. Drain valve; 8. Filter element; 9. Preliminary filter; 10. Fixed ring groove; 11. Drain outlet; 12. Metal perforated plate layer; 13. Outer sealing ring; 14. Fixed cover; 15. High temperature resistant non-woven fabric layer; 16. Titanium rod filter layer; 17. Burnt epoxy resin adsorption filter layer; 18. Activated carbon adsorption layer; 19. Pollution collection area; 20. Hydrophobic layer; 21. Refrigeration plate; 22. Heat absorbing surface; 23. Cooling fan; 24. Heat dissipation hole; 25. Refrigeration box body. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1: Please refer to Figure 1-6A multi-stage filter assembly for preparing clean nitrogen comprises a filter body 3, a fixed ring groove 10 is arranged at the inner base of the filter body 3, a fixed cover 14 is inserted in the fixed ring groove 10, a filter core body 8 is connected to the top of the fixed cover 14, a preliminary filter screen 9 is arranged and installed on one side of the filter core body 8, a metal hole plate layer 12 is arranged inside the filter core body 8, a high temperature resistant non-woven fabric layer 15, an activated carbon adsorption layer 18, a burnt epoxy resin adsorption filter layer 17, and a titanium rod filter layer 16 are sequentially connected to the outside of the metal hole plate layer 12, an outer sealing ring 13 is arranged at the top of the fixed cover 14, an air inlet 1 is arranged on one side of the filter body 3, and an air outlet 6 is arranged on the other side of the filter body 3;

[0026] The preliminary filter screen 9 on one side of the filter core body 8 is connected to the air inlet 1 on one side of the filter body 3. The filter core body 8 is inserted into the fixed ring groove 10 through the fixed cover 14 and installed inside the filter body 3. The metal hole plate layer 12, the high temperature resistant non-woven fabric layer 15, the activated carbon adsorption layer 18, the burnt epoxy resin adsorption filter layer 17, and the titanium rod filter layer 16 are sequentially arranged inside the filter core body 8. The preliminary filter screen 9 passes through the filter core body 8 and is connected to the metal hole plate layer 12;

[0027] Specifically, Figure 2 and, Figure 3 Figure 4 As shown, by setting up a multiple filtering structure, when in use, the atmosphere enters the filter body 3 through the air inlet 1 on one side of the filter body 3, contacts the preliminary filter screen 9 on one side of the filter core 8, and performs preliminary filtration on the air. Then, the air passes through the preliminary filter screen 9 and enters the metal hole plate layer 12 inside the filter core 8, and condenses on the metal hole plate layer 12. After the air enters the high temperature resistant non-woven fabric layer 15 to filter the water vapor, the air is re-adsorbed by the activated carbon adsorption layer 18, and then the oil and fat in the air are adsorbed by the burnt epoxy resin adsorption filter layer 17 and the titanium rod filter layer 16 to purify the air, thereby realizing multiple filtering functions.

[0028] Embodiment 2: A sewage collecting area 19 is provided at the bottom of the filter body 3, a hydrophobic layer 20 is provided on the inner wall of the bottom of the filter body 3, a sewage outlet 11 is provided at the bottom of the filter body 3, and a sewage valve 7 is installed at the bottom of the sewage outlet 11;

[0029] The sewage outlet 11 is connected to the sewage collecting area 19 through the filter body 3, the hydrophobic layer 20 is attached to the inner wall of the sewage collecting area 19, and the sewage valve 7 is installed at the bottom of the sewage outlet 11;

[0030] Specifically, Figure 1 , Figure 2 and Figure 5As shown, by setting a lower sewage residual structure, when in use, after the filter core 8 inside the filter body 3 filters the air, a part of the impurities will enter the sewage collecting area 19 at the bottom of the filter body 3. The hydrophobic layer 20 on the inner wall of the sewage collecting area 19 can reduce the adhesion of sewage to the inside of the filter body 3. By opening the sewage valve 7 of the sewage outlet 11 at the bottom of the filter body 3, the sewage inside the sewage collecting area 19 is drained from the sewage valve 7 through the sewage outlet 11, thereby realizing the lower sewage residual function.

[0031] Embodiment 3: A refrigeration box body 25 is installed at the rear end of the filter body 3, a heat dissipation hole 24 is opened on one side of the refrigeration box body 25, a heat dissipation fan 23 is installed inside the refrigeration box body 25, a refrigeration fin 21 is installed at the rear end of the filter body 3, and a heat absorption surface 22 is provided on one side of the refrigeration fin 21;

[0032] The cooling sheet 21 is attached to the rear end of the filter body 3, and a heat absorbing surface 22 is provided on one side of the cooling sheet 21. The cooling fan 23 is installed inside the cooling box body 25 and contacts the heat absorbing surface 22. The cooling fan 23 is connected to the outside through the heat dissipation hole 24 on one side of the cooling box body 25.

[0033] Specifically, Figure 6 As shown, by setting up a refrigeration structure, the refrigeration sheet 21 is energized during use, so that the refrigeration sheet 21 absorbs heat from the surface of the filter body 3, and the refrigeration sheet 21 is transferred to the heat absorbing surface 22. The heat dissipation fan 23 on one side of the heat absorbing surface 22 will discharge the heat through the heat dissipation holes 24 on one side of the refrigeration box body 25, so that the surface temperature of the filter body 3 is lowered and the water vapor in the air inside the filter body 3 is separated, thereby realizing the refrigeration function.

[0034] Working principle: In the utility model, the air inlet 1 and the air outlet 6 on one side of the filter body 3 are connected to the air inlet pipe and the air outlet pipe respectively. The air enters the air inlet 1 on one side of the filter body 3 through the air inlet pipe and enters the interior of the filter body 3, contacts the preliminary filter screen 9 on one side of the filter core body 8, and performs preliminary filtration on the air. Then, the refrigeration sheet 21 is started to absorb heat from the surface of the filter body 3, and the refrigeration sheet 21 is transferred to the heat absorption surface 22. The heat dissipation fan 23 on one side of the heat absorption surface 22 discharges the heat through the heat dissipation holes 24 on one side of the refrigeration box body 25, so that the surface temperature of the filter body 3 is reduced, which is convenient for separating the water vapor in the air inside the filter body 3. Then, the air enters the filter through the preliminary filter screen 9. The air contacts the metal porous plate layer 12 inside the core body 8, and the air is pre-cooled and condensed on the metal porous plate layer 12. After the air enters the high temperature resistant non-woven fabric layer 15 to filter the water vapor, the air is re-adsorbed by the activated carbon adsorption layer 18, and the epoxy resin adsorption filter layer 17 and the titanium rod filter layer 16 are burned to adsorb grease and the like in the air to purify the air. Finally, after the air is filtered by the filter core 8 inside the filter body 3, some impurities will enter the sewage collecting area 19 at the bottom of the filter body 3. The hydrophobic layer 20 on the inner wall of the sewage collecting area 19 can reduce the adhesion of sewage to the inside of the filter body 3. By opening the drain valve 7 of the sewage outlet 11 at the bottom of the filter body 3, the sewage inside the sewage collecting area 19 is discharged from the drain valve 7 through the sewage outlet 11.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A multi-stage filter assembly for preparing clean nitrogen, comprising a filter body (3), Features: The inner base of the filter body (3) is provided with a fixed annular groove (10), a fixed cover (14) is inserted into the inner part of the fixed annular groove (10), the top end of the fixed cover (14) is connected to a filter core (8), one side of the filter core (8) is provided with a preliminary filter screen (9), the inner part of the filter core (8) is provided with a metal hole plate layer (12), the outer part of the metal hole plate layer (12) is connected in sequence with a high temperature resistant non-woven fabric layer (15), an activated carbon adsorption layer (18), a burnt epoxy resin adsorption filter layer (17), and a titanium rod filter layer (16), the top end of the fixed cover (14) is provided with an outer sealing ring (13), one side of the filter body (3) is provided with an air inlet (1), and the other side of the filter body (3) is provided with an air outlet (6).

2. A multi-stage filter assembly for preparing clean nitrogen according to claim 1, Features: The preliminary filter screen (9) on one side of the filter core (8) is connected to the air inlet (1) on one side of the filter body (3), and the filter core (8) is inserted into the fixed ring groove (10) through the fixed cover (14) and installed inside the filter body (3).

3. A multi-stage filter assembly for preparing clean nitrogen according to claim 1, Features: The metal perforated plate layer (12), the high temperature resistant non-woven fabric layer (15), the activated carbon adsorption layer (18), the epoxy resin adsorption filter layer (17) and the titanium rod filter layer (16) are sequentially arranged inside the filter core (8), and the preliminary filter screen (9) passes through the filter core (8) and is connected to the metal perforated plate layer (12).

4. A multi-stage filter assembly for preparing clean nitrogen according to claim 1, Features: A flange joint (2) is arranged outside the filter body (3), a fixing knob (5) is inserted inside the flange joint (2), and a pressure gauge (4) is installed at the top end of the filter body (3).

5. A multi-stage filter assembly for preparing clean nitrogen according to claim 1, Features: The inner bottom end of the filter body (3) is provided with a sewage collecting area (19), the inner wall of the bottom end of the filter body (3) is provided with a hydrophobic layer (20), the bottom of the filter body (3) is provided with a sewage outlet (11), and the bottom of the sewage outlet (11) is installed with a sewage valve (7).

6. A multi-stage filter assembly for preparing clean nitrogen according to claim 5, Features: The sewage outlet (11) is connected to the sewage collection area (19) through the filter body (3), the hydrophobic layer (20) is attached to the inner wall of the sewage collection area (19), and the sewage valve (7) is installed at the bottom of the sewage outlet (11).

7. A multi-stage filter assembly for preparing clean nitrogen according to claim 1, Features: A refrigeration box body (25) is installed at the rear end of the filter body (3), a heat dissipation hole (24) is opened on one side of the refrigeration box body (25), a heat dissipation fan (23) is installed inside the refrigeration box body (25), and a refrigeration fin (21) is installed at the rear end of the filter body (3), and a heat absorption surface (22) is provided on one side of the refrigeration fin (21).

8. A multi-stage filter assembly for preparing clean nitrogen according to claim 7, Features: The refrigeration plate (21) is attached to the rear end of the filter body (3); a heat absorbing surface (22) is provided on one side of the refrigeration plate (21); the heat dissipation fan (23) is installed inside the refrigeration box body (25) and contacts the heat absorbing surface (22); the heat dissipation fan (23) is connected to the outside through a heat dissipation hole (24) on one side of the refrigeration box body (25).

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