Distributor of nitrogen making machine

Abstract

The utility model relates to the field of nitrogen making, in particular to a distributor of a nitrogen making machine, which is characterized in that a distributor body comprises a circular gas distribution plate, a plurality of gas distribution holes are uniformly distributed on the gas distribution plate, a plurality of partition plates are fixedly mounted at the bottom of the gas distribution plate, and gas chambers are respectively arranged between the gas distribution plate and the innermost partition plate as well as between the gas distribution plate and two adjacent partition plates; the distributor body is coaxially and fixedly provided with a gas inlet pipe which extends vertically, and the gas inlet pipe corresponding to each gas chamber is respectively provided with a gas exhaust hole; a top gas inlet pipe and a bottom gas inlet pipe are fixedly mounted at the upper end and the lower end of the gas inlet pipe respectively and are both connected with a gas distribution box, and a gas distribution mechanism for enabling gas to alternately enter the top gas inlet pipe and the bottom gas inlet pipe is arranged on the gas distribution box; and gas in the gas distribution box alternately enters the top gas inlet pipe and the bottom gas inlet pipe and alternately flows up and down in the gas inlet pipes, so that the effect of uniform gas distribution is achieved.

Description

Technical Field

[0001] The utility model relates to the field of nitrogen production, in particular to a distributor for a nitrogen making machine. Background Art

[0002] The pressure swing adsorption nitrogen generator uses compressed air as raw material and carbon molecular sieve as adsorbent. It uses the differences in adsorption capacity, adsorption rate, adsorption force of oxygen and nitrogen on carbon molecular sieve and the characteristics of molecular sieve having different adsorption capacities for oxygen and nitrogen with different pressures to achieve oxygen and nitrogen separation. When designing nitrogen production equipment with large gas production, the adsorption tower is large in size. If there is no suitable air flow distributor in the adsorption tower to evenly distribute the raw air to every corner of the adsorption tower, the molecular sieve in the tower cannot be used efficiently, resulting in a part of the molecular sieve not participating in the nitrogen production work.

[0003] like Figure 1 As shown, the existing gas distributors are mostly circular sheet structures, which are provided with multiple air inlet holes 01 with equal apertures. Since the air inlet pipe is located at the bottom center of the adsorption tower, when the gas passes through the gas distributor, the gas flow rate of the air inlet hole located in the middle of the gas distributor is relatively large, resulting in the gas being concentrated in the middle when passing through the molecular sieve, and the surrounding molecular sieves cannot be fully utilized, resulting in low nitrogen production efficiency of the equipment. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a nitrogen generator distributor, which can distribute the gas more evenly when the gas enters the adsorption tower, so as to solve the problems in the prior art.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a nitrogen generator distributor, including an adsorption tower, a distributor body is fixedly installed in the adsorption tower, the distributor body includes a circular gas distribution plate, a plurality of gas distribution holes are evenly distributed on the gas distribution plate, a plurality of partitions are fixedly installed on the bottom of the gas distribution plate, the partition includes an annular partition and a horizontal partition that closes the lower end of the annular partition, the annular partition is coaxially arranged with the gas distribution plate, the radius of the plurality of annular partitions increases from the inside to the outside, and the height of the plurality of annular partitions increases from the inside to the outside, the space between the gas distribution plate and the innermost partition and An air chamber is respectively provided between the air distribution plate and two adjacent partitions, and a vertically extending air intake pipe is coaxially fixedly installed on the distributor body. The air intake pipe vertically penetrates the air distribution plate and the multiple horizontal partitions, and exhaust holes are respectively provided on the air intake pipe corresponding to each air chamber; a top air intake pipe and a bottom air intake pipe are respectively fixedly installed at the upper and lower ends of the air intake pipe, and the top air intake pipe and the bottom air intake pipe are both connected to a gas distribution box, and a main air intake pipe is fixedly installed on the gas distribution box, and a gas distribution mechanism for allowing gas to alternately enter the top air intake pipe and the bottom air intake pipe is provided on the gas distribution box.

[0006] As a further improvement, the air intake pipe corresponding to each of the air chambers is provided with a plurality of exhaust holes, and the plurality of exhaust holes in the same air chamber are evenly spaced around the circumference of the air intake pipe.

[0007] As a further improvement, the gas distribution box is in the shape of a vertically extending cylinder, and air outlet holes are provided on the peripheral wall of the gas distribution box, and the air outlet holes include a top air outlet hole and a bottom air outlet hole, and the top air outlet hole and the bottom air outlet hole are both located on the same side of the gas distribution box and have different heights, and the top air inlet pipe and the bottom air inlet pipe are respectively connected to the top air outlet hole and the bottom air outlet hole.

[0008] As a preferred technical solution, the gas distribution mechanism includes a vertical shaft coaxially rotatably installed on the gas distribution box, and a plurality of sealing plates are fixedly installed on the vertical shaft located in the gas distribution box, the sealing plates include an upper sealing plate for sealing the top air outlet and a lower sealing plate for sealing the bottom air outlet, and the plurality of sealing plates are evenly spaced around the circumference of the vertical shaft, and the upper sealing plates and the lower sealing plates are staggered in the circumference of the vertical shaft; a driving mechanism for driving the vertical shaft to rotate is provided on the gas distribution box.

[0009] As a preferred technical solution, the driving mechanism includes a groove wheel fixedly mounted on the vertical shaft, a plurality of radial grooves are evenly spaced circumferentially on the groove wheel, a plurality of concave locking arcs are also evenly spaced circumferentially on the groove wheel, the radial grooves and the concave locking arcs respectively correspond to the sealing plates one by one; a driving motor is installed on one side of the gas distribution box, a convex locking arc matching the concave locking arc is fixedly mounted on the rotating shaft of the driving motor, when the convex locking arc rotates into one of the concave locking arcs, one of the sealing plates blocks the corresponding air outlet, a paddle plate is also fixedly mounted on the rotating shaft of the driving motor, a cylindrical pin matching the radial groove is fixedly mounted on the paddle plate.

[0010] After adopting the above-mentioned technical scheme, the beneficial effect of the utility model is as follows: the present application drives the vertical shaft and the sealing plate to rotate intermittently through the groove wheel, so that the upper sealing plate and the lower sealing plate alternately block the corresponding air outlet holes, so that the gas in the gas distribution box alternately enters the top air inlet pipe and the bottom air inlet pipe, and the gas flows alternately up and down in the air inlet pipe, avoiding the air distribution holes located on the inner side of the air distribution plate or the air distribution holes located on the outer side of the air distribution plate to maintain a large gas flow state for a long time, thereby achieving the effect of uniform air distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] Figure 1 It is a structural schematic diagram of an existing gas distributor;

[0013] Figure 2 It is a structural schematic diagram of an embodiment of the utility model;

[0014] Figure 3 is a schematic top view of an air distribution plate according to an embodiment of the utility model;

[0015] Figure 4 It is a structural schematic diagram of a gas distribution box of an embodiment of the utility model;

[0016] Figure 5 yes Figure 4 Middle AA section view;

[0017] Figure 6 It is a top view schematic diagram of the driving mechanism of the embodiment of the utility model.

[0018] In the figure: 01-air inlet; 1-adsorption tower; 2-distributor body; 3-gas distribution plate; 4-air distribution hole; 5-partition; 6-annular partition; 7-horizontal partition; 8-inlet pipe; 9-exhaust hole; 10-top air inlet pipe; 11-bottom air inlet pipe; 12-gas distribution box; 13-top air outlet; 14-bottom air outlet; 15-main air inlet pipe; 16-vertical axis; 17-sealing plate; 18-upper sealing plate; 19-lower sealing plate; 20-groove wheel; 21-radial groove; 22-concave locking arc; 23-driving motor; 24-convex locking arc; 25-push plate; 26-cylindrical pin; 27-air chamber. DETAILED DESCRIPTION

[0019] like Figures 2 to 6 As shown, a nitrogen generator distributor comprises an adsorption tower 1, a distributor body 2 is fixedly installed in the adsorption tower 1, the distributor body 2 comprises a circular gas distribution plate 3, a plurality of gas distribution holes 4 are evenly distributed on the gas distribution plate 3, a plurality of partitions 5 are fixedly installed at the bottom of the gas distribution plate 3, the partitions 5 comprise an annular partition 6 and a horizontal partition 7 that seals the lower end of the annular partition 6, the upper end of the annular partition 6 is welded to the bottom of the gas distribution plate 3, the horizontal partition 7 is welded to the lower end of the annular partition 6, the horizontal partition 7 is circular and has the same outer diameter as the corresponding annular partition 6. The annular partition 6 is coaxially arranged with the gas distribution plate 3, the radius of the plurality of annular partitions 6 increases from the inside to the outside, and the height of the plurality of annular partitions 6 increases from the inside to the outside, the outer diameter of the outermost annular partition 6 is the same as the outer diameter of the gas distribution plate 3, and the outermost annular partition 6 is fixed to the adsorption tower 1 by bolts. Air chambers 27 are respectively provided between the air distribution plate 3 and the innermost partition 5 and between the air distribution plate 3 and two adjacent partitions 5. A vertically extending air intake pipe 8 is coaxially fixedly installed on the distributor body 2. The air intake pipe 8 vertically penetrates the air distribution plate 3 and multiple horizontal partitions 7. The air intake pipe 8 and the air distribution plate 3 and the air intake pipe 8 and the horizontal partitions 7 are respectively fixed by welding; exhaust holes 9 are respectively provided on the air intake pipe 8 corresponding to each air chamber 27. In order to evenly distribute the gas discharged from the air intake pipe 8 in the air chamber 27, multiple exhaust holes 9 are respectively provided on the air intake pipe 8 corresponding to each air chamber 27, and the multiple exhaust holes 9 located in the same air chamber 27 are evenly spaced around the circumference of the air intake pipe 8.

[0020] like Figure 2 and Figure 4As shown, the upper and lower ends of the air inlet pipe 8 are respectively welded with a transversely extending top air inlet pipe 10 and a bottom air inlet pipe 11, and a gas distribution box 12 is fixedly installed on the right side of the adsorption tower 1 through a bracket. The ends of the top air inlet pipe 10 and the bottom air inlet pipe 11 away from the air inlet pipe 8 extend to the outside of the adsorption tower 1 and are fixedly installed on the left side of the gas distribution box 12 by bolts. The gas distribution box 12 is a vertically extending cylindrical shape, and air outlet holes are provided on the peripheral wall of the gas distribution box 12. The air outlet holes include a top air outlet hole 13 and a bottom air outlet hole 14. The top air outlet hole 13 and the bottom air outlet hole 14 are both located on the left side of the gas distribution box 12 and have different heights. The ends of the top air inlet pipe 10 and the bottom air inlet pipe 11 away from the air inlet pipe 8 are respectively connected to the top air outlet hole 13 and the bottom air outlet hole 14. A main air intake pipe 15 is fixedly mounted on the right side of the gas distribution box 12 by means of bolts. The gas distribution box 12 is provided with a gas distribution mechanism for allowing the gas to alternately enter the top air intake pipe 10 and the bottom air intake pipe 11 .

[0021] When in use, the gas is injected into the gas distribution box 12 through the main air intake pipe 15. Under the action of the gas distribution mechanism, the gas in the gas distribution box 12 alternately enters the top air intake pipe 10 and the bottom air intake pipe 11. When the gas in the gas distribution box 12 enters the top air intake pipe 10, the gas enters the air intake pipe 8 from the upper end and enters the multiple air chambers 27 through the exhaust holes 9 on the air intake pipe 8. The gas flows from top to bottom in the air intake pipe 8, so that the exhaust holes 9 located at the high part of the air intake pipe 8 have a larger gas flow rate, while the exhaust holes 9 located at the low part of the air intake pipe 8 have a smaller gas flow rate, and then the gas distribution holes 4 corresponding to the inner air chamber 27 have a larger gas flow rate, while the gas distribution holes 4 corresponding to the outer air chamber 27 have a smaller gas flow rate; When the gas in the gas distribution box 12 enters the bottom air inlet pipe 11, the gas enters the air inlet pipe 8 from the lower end and enters the multiple air chambers 27 through the exhaust holes 9 on the air inlet pipe 8. The gas flows from bottom to top in the air inlet pipe 8, so that the exhaust holes 9 located at the lower part of the air inlet pipe 8 have a larger gas flow rate, while the exhaust holes 9 located at the higher part of the air inlet pipe 8 have a smaller gas flow rate, and then the gas distribution holes 4 corresponding to the outer air chamber 27 have a larger gas flow rate, while the gas distribution holes 4 corresponding to the inner air chamber 27 have a smaller gas flow rate. The gas distribution mechanism allows the gas to alternately enter the top air inlet pipe 10 and the bottom air inlet pipe 11, so as to avoid the air distribution holes 4 located on the inner side of the air distribution plate 3 or the air distribution holes 4 located on the outer side of the air distribution plate 3 from maintaining a large gas flow rate for a long time, thereby achieving a uniform gas distribution effect.

[0022] like Figure 4 and Figure 5As shown, the gas distribution mechanism includes a vertical shaft 16 coaxially arranged with the gas distribution box 12, and the vertical shaft 16 is rotatably mounted on the top wall and the bottom wall of the gas distribution box 12 through bearings. A plurality of blocking plates 17 are fixedly mounted on the vertical shaft 16 located in the gas distribution box 12, and the blocking plates 17 are in an arc shape that fits the inner wall of the gas distribution box 12. A support rod is welded to the side of the blocking plate 17 close to the vertical shaft 16, and the end of the support rod away from the blocking plate 17 is welded to the vertical shaft 16. The blocking plate 17 includes an upper blocking plate 18 for blocking the top gas outlet 13 and a lower blocking plate 19 for blocking the bottom gas outlet 14. The plurality of blocking plates 18 are evenly spaced around the circumference of the vertical shaft 16, and the upper blocking plates 18 and the lower blocking plates 19 are staggered in the circumference of the vertical shaft 16; the gas distribution box 12 is provided with a driving mechanism for driving the vertical shaft 16 to rotate.

[0023] like Figure 4 and Figure 6 As shown, the upper end of the vertical shaft 16 extends to the outside of the gas distribution box 12, and the driving mechanism includes a groove wheel 20 fixedly installed on the upper end of the vertical shaft 16, and a plurality of radial grooves 21 are evenly spaced circumferentially on the groove wheel 20, and a plurality of concave locking arcs 22 are also evenly spaced circumferentially on the groove wheel 20. The radial grooves 21 and the concave locking arcs 22 correspond to the sealing plates 17 one by one, respectively. In this embodiment, there are four sealing plates 17, including two upper sealing plates 18 and two lower sealing plates 19, and there are four radial grooves 21 and four concave locking arcs 22, respectively. A driving motor 23 is installed on the right side of the gas distribution box 12 by bolts. The rotating shaft of the driving motor 23 extends upward and is fixedly installed with a convex locking arc 24 matching the concave locking arc 22. When the convex locking arc 24 rotates into one of the concave locking arcs 22, one of the sealing plates 17 blocks the corresponding air outlet. A shift plate 25 is also fixedly installed on the rotating shaft of the driving motor 23 located below the convex locking arc 24, and a cylindrical pin 26 matching the radial groove 21 is fixedly installed on the shift plate 25.

[0024] During specific operation, the convex locking arc 24 and the shift plate 25 are driven to rotate by the driving motor 23, and the cylindrical pins 26 on the convex locking arc 24 and the shift plate 25 act on the groove wheel 20, so that the groove wheel 20 rotates intermittently, and the angle of each rotation is ninety degrees. The groove wheel 20 drives the vertical shaft 16 to rotate synchronously, so that the upper sealing plate 18 and the lower sealing plate 19 alternately block the corresponding air outlet holes, so as to achieve the purpose of making the gas in the gas distribution box 12 alternately enter the top air inlet pipe 10 and the bottom air inlet pipe 11.

[0025] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A nitrogen generator distributor, characterized in that: The invention comprises an adsorption tower, wherein a distributor body is fixedly installed in the adsorption tower, wherein the distributor body comprises a circular air distribution plate, wherein a plurality of air distribution holes are evenly distributed on the air distribution plate, wherein a plurality of partitions are fixedly installed at the bottom of the air distribution plate, wherein the partitions comprise an annular partition and a horizontal partition closing the lower end of the annular partition, wherein the annular partition is coaxially arranged with the air distribution plate, wherein the radius of the plurality of annular partitions increases from the inside to the outside, and the height of the plurality of annular partitions increases from the inside to the outside, and the air distribution plate and the innermost partition as well as the air distribution plate and the two adjacent partitions are spaced apart from each other. Air chambers are respectively provided between the two sides, and a vertically extending air inlet pipe is coaxially fixedly installed on the distributor body, and the air inlet pipe vertically penetrates the air distribution plate and the multiple horizontal partitions, and exhaust holes are respectively provided on the air inlet pipe corresponding to each of the air chambers; a top air inlet pipe and a bottom air inlet pipe are respectively fixedly installed at the upper and lower ends of the air inlet pipe, and the top air inlet pipe and the bottom air inlet pipe are both connected to a gas distribution box, and a main air inlet pipe is fixedly installed on the gas distribution box, and a gas distribution mechanism for allowing gas to alternately enter the top air inlet pipe and the bottom air inlet pipe is provided on the gas distribution box.

2. A nitrogen generator distributor as claimed in claim 1, characterized in that: The air intake pipe corresponding to each of the air chambers is respectively provided with a plurality of exhaust holes, and the plurality of exhaust holes located in the same air chamber are evenly spaced around the circumference of the air intake pipe.

3. A nitrogen generator distributor as claimed in claim 1, characterized in that: The gas distribution box is in the shape of a vertically extending cylinder, and air outlet holes are provided on the peripheral wall of the gas distribution box, and the air outlet holes include a top air outlet hole and a bottom air outlet hole. The top air outlet hole and the bottom air outlet hole are both located on the same side of the gas distribution box and have different heights, and the top air inlet pipe and the bottom air inlet pipe are connected to the top air outlet hole and the bottom air outlet hole respectively.

4. A nitrogen generator distributor as claimed in claim 3, characterized in that: The gas distribution mechanism includes a vertical shaft coaxially mounted on the gas distribution box, and a plurality of sealing plates are fixedly mounted on the vertical shaft inside the gas distribution box, the sealing plates include an upper sealing plate for sealing the top air outlet and a lower sealing plate for sealing the bottom air outlet, the plurality of sealing plates are evenly spaced around the circumference of the vertical shaft, and the upper sealing plates and the lower sealing plates are staggered around the circumference of the vertical shaft; a driving mechanism for driving the vertical shaft to rotate is provided on the gas distribution box.

5. A nitrogen generator distributor as claimed in claim 4, characterized in that: The driving mechanism includes a groove wheel fixedly mounted on the vertical shaft, a plurality of radial grooves are evenly spaced circumferentially on the groove wheel, a plurality of concave locking arcs are also evenly spaced circumferentially on the groove wheel, the radial grooves and the concave locking arcs respectively correspond to the sealing plates one by one; a driving motor is mounted on one side of the gas distribution box, a convex locking arc matching the concave locking arc is fixedly mounted on the rotating shaft of the driving motor, when the convex locking arc rotates into one of the concave locking arcs, one of the sealing plates blocks the corresponding air outlet, a paddle plate is also fixedly mounted on the rotating shaft of the driving motor, a cylindrical pin matching the radial groove is fixedly mounted on the paddle plate.

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