阅读说明：本技术 一种变压吸附干燥机制氮制氧机的进气结构 (A kind of air intake structure of Adsorbing drying by pressure variation mechanism nitrogen oxygenerator ) 是由 廖志远 于 2019-09-09 设计创作，主要内容包括：本发明提供一种变压吸附干燥机制氮制氧机的进气结构,包括有一阀体、第一吸附罐及第二吸附罐,所述阀体内部设有第二空腔,其两端连通有第一空腔与第三空腔,所述第二空腔中部连通于气体进口,所述第二空腔内滑动设有一阀芯,所述第一空腔连通于第一吸附罐内腔,第三空腔连通于第二吸附罐内腔,所述第一空腔并接有连通于外界的第一排气装置,所述第三空腔并接有连通于外界的第二排气装置。本发明减少两个进气阀门,节省成本；生产制作简单,阀体少,管路少,安装起来更加简单,控制更简单,只需控制两个阀门；设备结构紧凑。(The present invention provides a kind of air intake structure of Adsorbing drying by pressure variation mechanism nitrogen oxygenerator, it include a valve body, first adsorption tanks and the second adsorption tanks, the valve inner is equipped with the second cavity, its both ends is communicated with the first cavity and third cavity, gas feed is connected in the middle part of second cavity, sliding is equipped with a spool in second cavity, first cavity is connected to the first adsorption tanks inner cavity, third cavity is connected to the second adsorption tanks inner cavity, first cavity is simultaneously connected to the first exhaust device for being connected to the external world, the third cavity is simultaneously connected to the second exhaust device for being connected to the external world.The present invention reduces by two air intake valves, saves cost；Manufacture simple, valve body is few, and pipeline is few, installs simpler, controls simpler, need to only control two valves；Device structure is compact.)

1. a kind of air intake structure of Adsorbing drying by pressure variation mechanism nitrogen oxygenerator includes a valve body, the first adsorption tanks and the second suction Attached tank, it is characterised in that: the valve inner is equipped with the second cavity, and both ends are communicated with the first cavity and third cavity, described Gas feed is connected in the middle part of second cavity, sliding is equipped with a spool in second cavity, which is respectively equipped with the The gas passage of one valve block and the second valve block for the second cavity both ends described in on-off, first cavity are connected to the first absorption Tank inner cavity, third cavity are connected to the second adsorption tanks inner cavity, and first cavity is simultaneously connected to the first exhaust dress for being connected to the external world It sets, the third cavity is simultaneously connected to the second exhaust device for being connected to the external world.

2. the air intake structure of Adsorbing drying by pressure variation mechanism nitrogen oxygenerator according to claim 1, it is characterised in that: the valve Core is I-shaped.

3. the air intake structure of Adsorbing drying by pressure variation mechanism nitrogen oxygenerator according to claim 1, it is characterised in that: described One exhaust apparatus and second exhaust device are motor-driven valve or are pneumatic operated valve.

4. the air intake structure of Adsorbing drying by pressure variation mechanism nitrogen oxygenerator according to claim 3, it is characterised in that: described One exhaust apparatus and the second exhaust device pass through a muffler and are connected to the external world.

5. the air intake structure of Adsorbing drying by pressure variation mechanism nitrogen oxygenerator according to claim 1, it is characterised in that: the valve Body, which is additionally provided with, is connected to the 4th extraneous cavity, and the 4th cavity is respectively communicated with the first cavity and third cavity, in its connectivity part The first exhaust device and the second exhaust device are respectively equipped with for on-off gas passage.

6. the air intake structure of Adsorbing drying by pressure variation mechanism nitrogen oxygenerator according to claim 5, it is characterised in that: described Four cavitys are connected to the external world by muffler.

7. the air intake structure of Adsorbing drying by pressure variation mechanism nitrogen oxygenerator according to claim 1-6, feature exist In: it is connected between first adsorption tanks inner cavity top and second adsorption tanks inner cavity top by a regulating valve, described One adsorption tanks inner cavity top is connected to exhaust outlet by the first check valve, and second adsorption tanks inner cavity top is unidirectional by second Valve is connected to exhaust outlet.

Technical field

The present invention relates to pressure-variable adsorption fields, refer in particular to the air inlet knot of a kind of pressure change adsorption type drying machine or nitrogen oxygenerator processed Structure.

Background technique

The air intake structure of existing absorption drier or nitrogen oxygenerator processed, as shown in figure 4, the first adsorption tanks 11 and second Adsorbent is filled in adsorption tanks 12, adsorbent can absorb moisture (working condition) in the case where there is pressure, in no pressure In the case of be precipitated moisture (reproduced state).Two adsorption tanks work alternatively, and air intake structure includes that there are four valves to constitute, and are respectively First intake valve 22, the second intake valve 23, first exhaust device 9, second exhaust device 10 form, and workflow is as follows:

The second adsorption tanks 12 regenerate process when first adsorption tanks 11 work: the first intake valve 22 is opened, the second intake valve 23 It closes, first exhaust device 9 is closed, and second exhaust device 10 is opened, and compressed gas is entered by air inlet 8, through the first intake valve 22 enter the first adsorption tanks 11, and the moisture of compressed air is absorbed by the adsorbent in the first adsorption tanks 11, dry compressed air It is most of to be flowed out through check valve 13 by gas outlet 16, achieve the purpose that dry, in addition the dry compressed air of sub-fraction is through adjusting It saves valve 15 and enters the second adsorption tanks 12,12 pressure very little of the second adsorption tanks, dry compressed air will be in the second adsorption tanks 12 The moisture that adsorbent contains is taken away, and keeps the adsorbent of the second adsorption tanks 12 dry, the compressed air of this sub-fraction is through second exhaust Device 10 is discharged by muffler 17.

Press process: the preceding paragraph process for a period of time after, press process into this, at this point, the first intake valve 22 is opened, the Two intake valves 23 are closed, and first exhaust device 9 is closed, and second exhaust device 10 is closed, and compressed gas is entered by air inlet 8, are passed through First intake valve 22 enters the first adsorption tanks 11, and the moisture of compressed air is absorbed by the adsorbent in the first adsorption tanks 11, dry Compressed air largely flowed out through check valve 13 by gas outlet 16, achieve the purpose that dry, the other dry pressure of sub-fraction Contracting air enters the second adsorption tanks 12 through regulating valve 15, and since second exhaust device 10 is closed, 12 pressure of the second adsorption tanks is gradually It increases, enters downstream when two pressure tank equilibriums.

The first adsorption tanks 11 regenerate process when second adsorption tanks 12 work: the first intake valve 22 is closed, the second intake valve 23 It opens, first exhaust device 9 is opened, and second exhaust device 10 is closed, and compressed gas is entered by air inlet 8, through the second intake valve 23 enter the second adsorption tanks 12, and the moisture of compressed air is absorbed by the adsorbent in the second adsorption tanks 12, dry compressed air It is most of to be flowed out through check valve 14 by gas outlet 16, achieve the purpose that dry, in addition the dry compressed air of sub-fraction is through adjusting It saves valve 15 and enters the first adsorption tanks 11, the first adsorption tanks 1A pressure very little, dry compressed air will be in the first adsorption tanks 1A The moisture that adsorbent contains is taken away, and keeps the adsorbent of the first adsorption tanks 11 dry, the compressed air of this sub-fraction is through first exhaust Device 9 is discharged by muffler 17.

Press process: the preceding paragraph process for a period of time after, press process into this, at this point, the first intake valve 22 is closed, the Two intake valves 23 are opened, and first exhaust device 9 is closed, and second exhaust device 10, compressed gas is entered by air inlet 8, through second Intake valve 23 enters the second adsorption tanks 12, and the moisture of compressed air is absorbed by the adsorbent in the second adsorption tanks 12, dry pressure Contracting air is most of to be flowed out through check valve 14 by gas outlet 16, achievees the purpose that the compression sky dry, in addition sub-fraction is dried Gas enters the first adsorption tanks 11 through regulating valve 15, and since first exhaust device 9 is closed, 11 pressure of the first adsorption tanks is gradually risen, The second adsorption tanks 12 regenerate process when entering the work of the first adsorption tanks 11 when two pressure tank equilibriums, so recycle.

This air intake structure is mainly made of 4 valve bodies, and installation process is complicated, control is complicated, structure is not compact.

Summary of the invention

The present invention provides the air intake structure of a kind of pressure change adsorption type drying machine, nitrogen oxygenerator processed, can improve valve it is excessive, Manufacture problem complicated, that control is complicated, device structure is not compact.

To achieve the goals above, The technical solution adopted by the invention is as follows:

A kind of air intake structure of Adsorbing drying by pressure variation mechanism nitrogen oxygenerator, includes a valve body, the first adsorption tanks and second Adsorption tanks, it is characterised in that: the valve inner is equipped with the second cavity, and both ends are communicated with the first cavity and third cavity, institute It states and is connected to gas feed in the middle part of the second cavity, sliding is equipped with a spool in second cavity, which is respectively equipped with The gas passage of first valve block and the second valve block for the second cavity both ends described in on-off, first cavity are connected to the first suction Attached tank inner cavity, third cavity are connected to the second adsorption tanks inner cavity, and first cavity is simultaneously connected to the first exhaust for being connected to the external world Device, the third cavity are simultaneously connected to the second exhaust device for being connected to the external world.

Preferably, the spool is I-shaped.

Preferably, the first exhaust device be that second exhaust device is motor-driven valve or is pneumatic operated valve.

Preferably, the first exhaust device and the second exhaust device pass through a muffler and are connected to the external world.

Preferably, the valve body, which is additionally provided with, is connected to the 4th extraneous cavity, and the 4th cavity is respectively communicated with the first cavity With third cavity, it is logical for on-off gas that the first exhaust device and the second exhaust device are respectively equipped in its connectivity part Road.

Preferably, the 4th cavity is connected to the external world by muffler.

Preferably, pass through a regulating valve between first adsorption tanks inner cavity top and second adsorption tanks inner cavity top Connection, first adsorption tanks inner cavity top is connected to exhaust outlet, second adsorption tanks inner cavity top by the first check valve Exhaust outlet is connected to by second one-way valve.

The invention has the advantages that:

A) it reduces by two air intake valves, saves cost；

B) it manufactures simply, valve body is few, and pipeline is few, installs simpler；

C) control is simpler, need to only control two valves；

D) device structure is compact.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of embodiment 1；

Fig. 2 is the structural schematic diagram of embodiment 2；

Fig. 3 is the structural schematic diagram of embodiment 3；

Fig. 4 is general dryer structural schematic diagram；

Specific embodiment

Technical solution of the present invention is illustrated with embodiment with reference to the accompanying drawing.