Uniform air inlet structure and oxygen generator separator and separation unit comprising same

Abstract

The utility model belongs to the technical field of oxygen production equipment, and particularly relates to a uniform air inlet structure and an oxygen generator separator and a separation unit comprising the same, the air inlet structure comprises a cover plate connected with a tank body, a sieve plate and a pressing plate for fixing the sieve plate; the cover plate comprises a cover plate top plate and a cover plate side wall, the cover plate side wall is arranged on the cover plate top plate, a ventilation channel is formed in the center of the cover plate top plate, a plurality of rib plates are radially arranged between the ventilation channel wall and the cover plate side wall, and a first inner cavity is defined by the cover plate side wall, the rib plates and the ventilation channel wall; an air inlet is formed in the wall of the ventilation channel between any two rib plates, and the air inlet is communicated with the first inner cavity and the ventilation channel. The separator comprises a tank body, a gas collecting pipe and a uniform gas inlet structure. And a plurality of separators form a separation unit. When gas enters the tank body, the distribution and diffusion effects are good, the structure is simple, and the installation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of oxygen production equipment, and particularly relates to a uniform air intake structure and an oxygen production machine separator and a separation unit containing the air intake structure. Background Art

[0002] In a pressure swing adsorption oxygen production system, the oxygen concentrator separator consists of a tank containing the adsorbent and structural components at either end of the tank, which connect the gas pipeline and compress the adsorbent. This component includes a cover plate attached to the tank and a sieve plate positioned between the cover and the tank. The sieve plate divides the tank interior into two chambers and features several vents for gas flow. A filter is typically placed on one side of the sieve plate to prevent the adsorbent from entering the gas pipeline through the vents.

[0003] Chinese utility model CN ​​208234549 U discloses a medical molecular sieve oxygen production system, the separation tower of which includes a tower body, an upper cover, and a lower cover: a wire mesh is provided in the tower body, a molecular sieve is provided in the wire mesh, an upper pressure plate is provided on the top of the wire mesh, and a lower pressure plate is provided on the bottom. Through holes are evenly distributed on the upper and lower pressure plates, and a spring is provided between the lower pressure plate and the lower cover. This patent uses a spring to compress the pressure plate, but when the pressure plate is unevenly stressed in this structure, it is easy to tip over, causing the adsorbent to enter the pipeline from the tipping point. In addition, the cover plates at both ends of the gas separator tank are complex in structure and difficult to install, which can easily cause the adsorbent to separate from the gas separator in the tank. There are also disadvantages such as high cost and difficult installation. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects of the prior art and propose a uniform air intake structure and an oxygen concentrator separator using the same. The utility model has good diversion and uniform diffusion effects when the gas enters the tank body, has a simple structure and is easy to install.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A uniform air intake structure, comprising a cover plate connected to a tank body, a sieve plate, and a pressing plate for fixing the sieve plate;

[0007] The cover plate includes a cover plate top plate and a cover plate side wall, the cover plate side wall is arranged on the cover plate top plate, a ventilation channel is arranged in the center of the cover plate top plate, a plurality of ribs are arranged radially between the ventilation channel wall and the cover plate side wall, and a first inner cavity is surrounded by the cover plate side wall, the ribs and the ventilation channel wall; an air inlet is arranged on the ventilation channel wall between any two ribs, and the air inlet communicates with the first inner cavity and the ventilation channel;

[0008] A plurality of vent holes are provided on the sieve plate;

[0009] A plurality of ventilation gaps are provided on the pressing plate;

[0010] The sieve plate is arranged inside the side wall of the cover plate and is fixed by a pressing plate.

[0011] Preferably, the air intake structure further includes a filter screen, and the filter screen is arranged between the sieve plate and the pressure plate.

[0012] Preferably, the cover plate sidewall and the pressure plate are connected by a threaded connection or a bayonet connection. The bayonet connection is a rotating bayonet locking connection. The specific structure is as follows: a plurality of protrusions are provided around the pressure plate, and a plurality of bayonet holes are provided on the cover plate sidewalls to match the protrusions. The pressure plate is rotated to lock the protrusions into the bayonet holes, thereby pressing the sieve plate into the cover plate, which is simple to install. The connection between the cover plate sidewall and the pressure plate can also adopt other detachable quick connection structures, such as a sleeve connection.

[0013] Preferably, among the ribs arranged radially, the distance between any two ribs is the same.

[0014] Preferably, a plurality of sealing grooves are provided on the top plate of the cover plate around the opening of the ventilation channel, and sealing rings are provided in the sealing grooves.

[0015] Preferably, the pressure plate includes a pressure plate ring, a plurality of pressure plate spokes and a pressure plate center piece. A plurality of pressure plate spokes are arranged between the pressure plate ring and the pressure plate center piece, and a ventilation gap is provided between any two pressure plate spokes.

[0016] The utility model further provides an oxygen concentrator separator, which includes a tank body, an air collecting pipe and the above-mentioned uniform air intake structure;

[0017] The two ends of the tank body are fixed with uniform air intake structures to form separation towers. Several separation towers are connected by air collecting pipes. The air collecting pipes are fixed on the uniform air intake structures. The air intake branches of the air collecting pipes are connected with the ventilation channels.

[0018] Preferably, the tank body, the gas collecting pipe and the uniform air intake structure are fixed with screws.

[0019] The present invention further provides an oxygen concentrator separation unit, which includes a plurality of the above-mentioned oxygen concentrator separators and pipe clamps. The oxygen concentrator separators are fixed by two sets of upper and lower pipe clamps.

[0020] Preferably, the pipe clamp clamps the gas collecting pipe and is fixed with screws.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] 1. The uniform air intake structure of the utility model is conducive to the diversion and uniform diffusion of gas when it enters the tank body due to the formation of several inner cavities in the cover plate;

[0023] 2. The utility model presses the sieve plate tightly into the cover plate through the pressing plate, which can effectively prevent the sieve plate from moving and tipping over, making the structure more stable and preventing the adsorbent from overflowing from the separator. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the separation unit of the oxygen concentrator;

[0025] Figure 2 yes Figure 1 AA view;

[0026] Figure 3 It is a structural diagram of the oxygen concentrator separator;

[0027] Figure 4 yes Figure 3 AA view;

[0028] Figure 5 This is the installation diagram of the cover plate, screen plate and pressure plate;

[0029] Figure 6 It is a structural diagram of the pressure plate;

[0030] Figure 7 It is a structural diagram of the cover;

[0031] Figure 8 is a top view of the cover;

[0032] Figure 9 is a cross-sectional view of the cover;

[0033] Figure 10 It is a structural diagram of the sieve plate;

[0034] Figure 11 It is a top view of the tank.

[0035] Reference numerals:

[0036] 1. Tank body; 2. Cover plate; 3. Sieve plate; 4. Filter screen; 5. Pressure plate; 6. Cover plate top plate; 7. Cover plate side wall; 8. Ventilation channel; 9. Ventilation channel wall; 10. Rib; 11. First inner cavity; 12. Air inlet; 13. Pressure plate ring; 14. Pressure plate spokes; 15. Pressure plate center piece; 16. Ventilation notch; 17. Bayonet; 18. Protrusion; 19. Sealing groove; 20. Sealing ring; 21. Gas collecting pipe; 22. Intake branch pipe; 23. Intake main line; 24. Pipe clamp; 25. First screw; 26. Second screw; 27. Second screw through hole; 28. Second screw mounting hole; 29. ​​Third screw; 30. Third screw through hole; 31. Third screw mounting hole; 32. Fourth screw; 33. Fourth screw mounting hole; 34. Second inner cavity. DETAILED DESCRIPTION

[0037] The technical solution of the present utility model is described in detail below with reference to the accompanying drawings and embodiments.

[0038] Example 1

[0039] like Figure 3-8 A uniform air intake structure, comprising a cover plate 2 connected to a tank body 1, a sieve plate 3, a filter screen 4, and a pressure plate 5 for fixing the sieve plate 3; the cover plate 2 comprises a cover plate top plate 6 and a cover plate side wall 7, the cover plate side wall 7 being disposed on the cover plate top plate 6, a ventilation channel 8 being disposed in the center of the cover plate top plate 6, a plurality of ribs 10 being radially disposed between the ventilation channel wall 9 and the cover plate side wall 7, the spacing between any two ribs 10 being the same; a first inner cavity 11 being enclosed between the cover plate side wall 7, the ribs 10, and the ventilation channel wall 9; an air inlet 12 being disposed on the ventilation channel wall 9 between any two ribs 10, the air inlet 12 communicating with the first inner cavity 11 and the ventilation channel 8;

[0040] like Figure 5-10 As shown, a plurality of ventilation holes are provided on the sieve plate 3; the pressure plate 5 includes a pressure plate ring 13, a plurality of pressure plate spokes 14 and a pressure plate center piece 15, a plurality of pressure plate spokes 14 are provided between the pressure plate ring 13 and the pressure plate center piece 15, and a ventilation gap 16 is provided between any two pressure plate spokes 14; the sieve plate 3 is provided in the side wall 7 of the cover plate and is fixed by the pressure plate 5, and the filter screen 4 is provided between the sieve plate 3 and the pressure plate 5.

[0041] like Figure 5 、 Figure 7 As shown, a plurality of bayonet holes 17 are provided on the side wall 7 of the cover plate, and a plurality of protrusions 18 are provided on the pressure plate ring 13. The bayonet holes 17 correspond to the protrusions 18 one by one. The protrusions 18 are rotated and clamped into the side wall 7 of the cover plate by the bayonet holes 17 to limit the upper and lower positions of the pressure plate 5. Then, the self-tapping screws are screwed into the side wall of the cover plate to limit the rotation of the pressure plate 5 to prevent the pressure plate from falling off. This structural method presses the sieve plate 3 and the filter screen 4 in the cover plate, and the installation method is simple.

[0042] like Figure 8 As shown, a plurality of sealing grooves 19 are provided on the cover plate top plate 6 around the ventilation channel opening, and a sealing ring 20 is provided in the sealing groove 19 .

[0043] Example 2

[0044] like Figure 3-4 As shown, an oxygen concentrator separator includes a tank body 1, a gas collecting pipe 21 and the uniform air intake structure described in Example 1;

[0045] The tank body 1 is filled with adsorbent, and a uniform air intake structure is fixed at both ends of the tank body 1 to form a separation tower. Several separation towers are connected by a collecting pipe 21. The collecting pipe 21 is fixed on the uniform air intake structure. The air intake branch 22 of the collecting pipe 21 is connected to the ventilation channel 8. The air intake main line 23 of the collecting pipe 21 connects the air intake branches 22 between several separation towers.

[0046] The tank body 1, the gas collecting pipe 21 and the uniform air intake structure are fixed with screws.

[0047] Example 3

[0048] like Figure 1-2 As shown, an oxygen concentrator separation unit includes several oxygen concentrator separators and pipe clamps 24 described in Example 2. The oxygen concentrator separators are fixed by two sets of upper and lower pipe clamps 24.

[0049] The pipe clamp 24 clamps the gas collecting pipe 21 and is fixed with screws.

[0050] In the present invention, a number of separation towers constitute a separator, and a number of separators constitute a separation unit. An appropriate number of separation towers and separators can be selected according to demand to form the required separation unit.

[0051] like Figure 1-2 As shown, in a separation unit composed of several groups of separators, a set of first screws 25 are used to install pipe clamps 24 on the upper and lower sides of the separators. This restrains the separators and prevents them from moving relative to each other. Each separator is composed of several separation towers, and the required number of separation towers can be selected as needed to form the required separation unit, achieving a modular effect.

[0052] like Figure 3-4 As shown, a separator includes a tank 1 and a uniform air intake structure provided at both ends of the tank body. The interior of the tank body 1 (ie, the second inner cavity 34) is used to fill the adsorbent.

[0053] like Figure 4 、 7 As shown in Figures 8, 9, and 11, each cover plate is tightened to the third screw mounting hole 31 on the tank body 1 with four third screws 29 passing through the third screw through hole 30. The sieve plate 3 is pressed tightly by a pressing plate 5 inside the cover plate 2. A number of sealing grooves 19 are provided on the end face and radial periphery of the cover plate 2. A sealing ring 20 is provided in the sealing groove 19 to prevent air leakage.

[0054] like Figure 3 、 7 As shown in , 8 and 11 , several second screws 26 pass through the second screw through holes 27 on the gas collecting pipe 21 and the cover plate 2 and are tightened into the second screw mounting holes 28 on the tank body 1 to mount the gas collecting pipe 21 on the tank body 1 .

[0055] like Figure 3 As shown, the sieve plate 3 is pressed and clamped into the interior of the cover plate 2 by the pressing plate 5. A number of ventilation holes are provided on the sieve plate 3 for connecting the first inner cavity 11 and the second inner cavity 34. A stainless steel filter screen 4 is provided between the pressing plate 5 and the sieve plate 3 to prevent the adsorbent from escaping from the ventilation holes of the sieve plate 3.

[0056] like Figure 5-7 As shown, the pressure plate 5 has a plurality of protrusions 18 around its pressure plate ring 13. The protrusions 18 are rotated and locked into the cover plate side wall 7 of the cover plate 2 by means of a bayonet 17. The bayonet 17 limits the pressure plate 5 in the upper and lower positions. Then, a fourth screw 32 is screwed into a fourth screw mounting hole 33 in the cover plate side wall to limit the rotation of the pressure plate 5 and prevent it from falling off.

[0057] like Figure 7 In the cover plate 2 shown, a plurality of ribs 10 are evenly arranged in a circular radial pattern in the cover plate 2 , dividing the interior of the cover plate 2 into a plurality of first inner cavities 11 of equal size. Each first inner cavity 11 is provided with an air inlet 12 .

[0058] like Figure 3 、 5 As shown in Figures 6 and 7, gas enters the main air intake channel 23 of the gas collecting pipe 21 from an external pipeline. The multiple air intake branches 22 of the separator are connected to the multiple tank bodies 1 one by one. The airflow from the multiple air intake branches 22 passes through the air intake channel 8 and the air inlet 12 of the cover plate 2 and enters the multiple first inner chambers 11, thus being diverted. The diverted gas enters the second inner chamber 34 through the vent holes of the sieve plate 3, the filter 4, and the vent notch 16 of the pressure plate 5. The second inner chamber 34 is filled with adsorbent, which makes the gas entering the tank more evenly diffused, helping the gas to be evenly adsorbed by the adsorbent within the tank, thereby improving the oxygen production efficiency.

[0059] Any content not described in detail in this utility model can be based on conventional technical knowledge in this field.

[0060] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and are intended to be encompassed by the claims of the present invention.

Claims

1. A uniform air intake structure, characterized in that: The air intake structure includes a cover plate connected to the tank body, a filter screen, a sieve plate, and a pressing plate for fixing the sieve plate; The cover plate includes a cover plate top plate and a cover plate side wall, the cover plate side wall is arranged on the cover plate top plate, a ventilation channel is arranged in the center of the cover plate top plate, a plurality of ribs are arranged radially between the ventilation channel wall and the cover plate side wall, and a first inner cavity is surrounded by the cover plate side wall, the ribs and the ventilation channel wall; an air inlet is arranged on the ventilation channel wall between any two ribs, and the air inlet communicates with the first inner cavity and the ventilation channel; A plurality of vent holes are provided on the sieve plate; A plurality of ventilation gaps are provided on the pressing plate; The sieve plate is arranged inside the side wall of the cover plate and fixed by a pressing plate, and the filter screen is arranged between the sieve plate and the pressing plate; The side wall of the cover plate and the pressing plate are connected by threaded connection or bayonet connection.

2. The uniform air intake structure according to claim 1, characterized in that: Among the ribs arranged radially, the distance between any two ribs is the same.

3. The uniform air intake structure according to claim 1, characterized in that: A plurality of sealing grooves are arranged on the top plate of the cover plate around the ventilation channel opening, and sealing rings are arranged in the sealing grooves.

4. The uniform air intake structure according to claim 1, characterized in that: The pressure plate includes a pressure plate ring, a plurality of pressure plate spokes and a pressure plate center piece. A plurality of pressure plate spokes are arranged between the pressure plate ring and the pressure plate center piece, and a ventilation gap is formed between any two pressure plate spokes.

5. The uniform air intake structure according to claim 1, characterized in that: The bayonet connection is a rotary bayonet locking connection, and the specific structure is as follows: A plurality of protrusions are arranged around the pressing plate, and a plurality of bayonet holes matching the protrusions are arranged on the side wall of the cover plate. The pressing plate is rotated to snap the protrusions into the bayonet holes for locking connection.

6. The uniform air intake structure according to claim 5, characterized in that: A fourth screw is screwed into the fourth screw mounting hole between the protrusion and the bayonet to limit the rotation of the pressure plate and prevent the pressure plate from falling off.

7. An oxygen concentrator separator, characterized in that: The separator comprises a tank body, an air collecting pipe and the uniform air intake structure according to any one of claims 1 to 6; The two ends of the tank body are fixed with uniform air intake structures to form separation towers. Several separation towers are connected by air collecting pipes. The air collecting pipes are fixed on the uniform air intake structures. The air intake branches of the air collecting pipes are connected with the ventilation channels.

8. The oxygen concentrator separator according to claim 7, characterized in that: The tank body, the air collecting pipe and the uniform air intake structure are fixed with screws.

9. An oxygen concentrator separation unit, characterized in that: The oxygen concentrator separation unit includes several oxygen concentrator separators and pipe clamps according to claim 7 or 8, and the oxygen concentrator separator is fixed by two sets of upper and lower pipe clamps.

10. The oxygen concentrator separation unit according to claim 9, characterized in that: The pipe clamp clamps the gas collecting pipe and is fixed with screws.

Images