CN210656152U - Air inlet structure of nitrogen oxygen generator with pressure swing adsorption drying mechanism - Google Patents
Air inlet structure of nitrogen oxygen generator with pressure swing adsorption drying mechanism Download PDFInfo
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- CN210656152U CN210656152U CN201921487308.8U CN201921487308U CN210656152U CN 210656152 U CN210656152 U CN 210656152U CN 201921487308 U CN201921487308 U CN 201921487308U CN 210656152 U CN210656152 U CN 210656152U
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Abstract
The utility model provides a pressure swing adsorption drying mechanism nitrogen oxygenerator's inlet structure, including a valve body, first adsorption tank and second adsorption tank, the inside second cavity that is equipped with of valve body, its both ends intercommunication have first cavity and third cavity, second cavity middle part communicates in gas inlet, it is equipped with a case to slide in the second cavity, first cavity communicates in first adsorption tank inner chamber, and the third cavity communicates in second adsorption tank inner chamber, first cavity has and has communicated in external first exhaust apparatus, the third cavity has and has communicated in external second exhaust apparatus. The utility model reduces two air inlet valves, thereby saving the cost; the production and the manufacture are simple, the number of valve bodies is small, the number of pipelines is small, the installation is simpler, the control is simpler, and only two valves need to be controlled; the device has compact structure.
Description
Technical Field
The utility model relates to the field of pressure swing adsorption, in particular to an air inlet structure of a pressure swing adsorption type dryer or a nitrogen making oxygenerator.
Background
In the air intake structure of the conventional adsorption dryer or nitrogen making oxygen generator, as shown in fig. 4, the first adsorption tank 11 and the second adsorption tank 12 are filled with an adsorbent, and the adsorbent can absorb moisture under pressure (operating state) and precipitate moisture under no pressure (regeneration state). The two adsorption tanks work alternately, the air inlet structure comprises four valves, namely a first air inlet valve 22, a second air inlet valve 23, a first exhaust device 9 and a second exhaust device 10, and the working process is as follows:
the regeneration process of the second adsorption tank 12 when the first adsorption tank 11 works: the first air inlet valve 22 is opened, the second air inlet valve 23 is closed, the first exhaust device 9 is closed, the second exhaust device 10 is opened, compressed air enters from the air inlet 8 and enters the first adsorption tank 11 through the first air inlet valve 22, moisture of the compressed air is absorbed by the adsorbent in the first adsorption tank 11, most of the dried compressed air flows out from the air outlet 16 through the one-way valve 13 to achieve the drying purpose, the other small part of the dried compressed air enters the second adsorption tank 12 through the regulating valve 15, the pressure of the second adsorption tank 12 is small, the dried compressed air takes away moisture contained in the adsorbent in the second adsorption tank 12 to dry the adsorbent in the second adsorption tank 12, and the small part of the compressed air is exhausted from the silencer 17 through the second exhaust device 10.
Pressure equalizing flow: after the previous flow is carried out for a period of time, the pressure equalizing flow enters, at the moment, the first air inlet valve 22 is opened, the second air inlet valve 23 is closed, the first exhaust device 9 is closed, the second exhaust device 10 is closed, the compressed air enters from the air inlet 8 and enters the first adsorption tank 11 through the first air inlet valve 22, moisture of the compressed air is absorbed by the adsorbent in the first adsorption tank 11, most of the dried compressed air flows out from the air outlet 16 through the one-way valve 13 to achieve the drying purpose, the other small part of the dried compressed air enters the second adsorption tank 12 through the regulating valve 15, and due to the fact that the second exhaust device 10 is closed, the pressure of the second adsorption tank 12 is gradually increased, and when the pressures of the two tanks are equalized, the next flow is carried out.
The regeneration process of the first adsorption tank 11 when the second adsorption tank 12 works: the first air inlet valve 22 is closed, the second air inlet valve 23 is opened, the first exhaust device 9 is opened, the second exhaust device 10 is closed, compressed air enters from the air inlet 8 and enters the second adsorption tank 12 through the second air inlet valve 23, moisture of the compressed air is absorbed by the adsorbent in the second adsorption tank 12, most of the dried compressed air flows out from the air outlet 16 through the one-way valve 14 to achieve the drying purpose, the other small part of the dried compressed air enters the first adsorption tank 11 through the regulating valve 15, the pressure of the first adsorption tank 1A is low, the dried compressed air takes away moisture contained in the adsorbent in the first adsorption tank 1A to dry the adsorbent in the first adsorption tank 11, and the small part of the compressed air is exhausted from the silencer 17 through the first exhaust device 9.
Pressure equalizing flow: after the last period of flow is finished for a while, the pressure equalizing flow enters, at this time, the first air inlet valve 22 is closed, the second air inlet valve 23 is opened, the first exhaust device 9 is closed, the second exhaust device 10 is closed, the compressed air enters from the air inlet 8 and enters the second adsorption tank 12 through the second air inlet valve 23, the moisture of the compressed air is absorbed by the adsorbent in the second adsorption tank 12, most of the dry compressed air flows out from the air outlet 16 through the one-way valve 14 to achieve the drying purpose, the other small part of the dry compressed air enters the first adsorption tank 11 through the regulating valve 15, because the first exhaust device 9 is closed, the pressure of the first adsorption tank 11 is gradually increased, and when the two tanks are in pressure equalization, the pressure of the first adsorption tank 11 enters the regeneration flow of the second adsorption tank 12 during working, and the process is circulated.
The air inlet structure mainly comprises 4 valve bodies, and is complex in installation process, complex in control and not compact in structure.
SUMMERY OF THE UTILITY MODEL
The utility model provides an air inlet structure of pressure swing adsorption dryer, nitrogen making oxygenerator can improve the problem that the valve is too much, the production preparation is complicated, the control is complicated, equipment structure is not compact.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
the utility model provides a pressure swing adsorption drying mechanism nitrogen oxygenerator's inlet structure, including a valve body, first adsorption tank and second adsorption tank, its characterized in that: the valve body is internally provided with a second cavity, the two ends of the second cavity are communicated with a first cavity and a third cavity, the middle of the second cavity is communicated with a gas inlet, a valve core is arranged in the second cavity in a sliding mode, the two ends of the valve core are respectively provided with a first valve plate and a second valve plate which are used for switching on and off gas passages at the two ends of the second cavity, the first cavity is communicated with an inner cavity of the first adsorption tank, the third cavity is communicated with an inner cavity of the second adsorption tank, the first cavity is connected with a first exhaust device communicated with the outside in a parallel mode, and the third cavity is connected with a second exhaust device communicated with the outside in a parallel mode.
Preferably, the valve core is I-shaped.
Preferably, the first exhaust device and the second exhaust device are both electric valves or both pneumatic valves.
Preferably, the first exhaust device and the second exhaust device are both communicated with the outside through a silencer.
Preferably, the valve body is further provided with a fourth cavity communicated with the outside, the fourth cavity is respectively communicated with the first cavity and the third cavity, and the communication position of the fourth cavity is respectively provided with the first exhaust device and the second exhaust device for opening and closing a gas passage.
Preferably, the fourth cavity is communicated with the outside through a silencer.
Preferably, the upper part of the inner cavity of the first adsorption tank is communicated with the upper part of the inner cavity of the second adsorption tank through a regulating valve, the upper part of the inner cavity of the first adsorption tank is communicated with the exhaust port through a first one-way valve, and the upper part of the inner cavity of the second adsorption tank is communicated with the exhaust port through a second one-way valve.
The utility model discloses beneficial effect:
a) two air inlet valves are reduced, and the cost is saved;
b) the production and the manufacture are simple, the number of valve bodies is small, the number of pipelines is small, and the installation is simpler;
c) the control is simpler, and only two valves are needed to be controlled;
d) the device has compact structure.
Drawings
FIG. 1 is a schematic structural view of example 1;
FIG. 2 is a schematic structural view of example 2;
FIG. 3 is a schematic structural view of embodiment 3;
FIG. 4 is a schematic view of a typical squeegee configuration;
Detailed Description
The technical solution of the present invention will be described below with reference to the accompanying drawings and examples.
Example 1: referring to fig. 1, the utility model provides an air inlet structure of a pressure swing adsorption dryer or a structure of a nitrogen making oxygen generator, which comprises a valve body 1, a first adsorption tank 11 and a second adsorption tank 12, wherein the valve 1 is internally provided with a first cavity 2, a second cavity 3 and a third cavity 4 in sequence, two ends of the second cavity 3 are respectively communicated with the first cavity 2 and the third cavity 4, the second cavity 3 is communicated with a gas inlet 8, a valve core 7 is arranged in the second cavity 3 in a sliding way, the valve core 7 is preferably in an I shape, the gas inlet 8 is communicated with the middle part of the valve core 7, two ends of the valve core 7 are respectively provided with a first valve plate 5 and a second valve plate 6 for opening and closing vent holes at two ends of the second cavity 3, the first cavity 2 is communicated with the lower part of the inner cavity of the first adsorption tank 11 through a pipeline, the third cavity 4 is communicated with the lower part of the inner cavity of the second adsorption tank 12 through a pipeline, the upper part of the inner cavity of the first adsorption tank 11 is communicated with the upper part of the inner cavity of the second adsorption tank 12 through a regulating valve 15, the upper part of the inner cavity of the first adsorption tank 11 is communicated with an exhaust port 16 through a first one-way valve 13, the upper part of the inner cavity of the second adsorption tank 12 is communicated with the exhaust port 16 through a second one-way valve 14, a first exhaust device 9 is connected in parallel with a pipeline between the first cavity 2 and the first adsorption tank 11, the first exhaust device 9 is communicated with the outside, a second exhaust device 10 is connected in parallel with a pipeline between the third cavity 4 and the second adsorption tank 12, the second exhaust device 10 is communicated with the outside, the first exhaust device 9 and the second exhaust device 10 are both electric valves or both pneumatic valves, and the first exhaust device 9 and the second exhaust device 10 are both communicated with the outside through a silencer 17 in order to reduce noise.
When the valve core 7 is positioned at a left station, the air path between the second cavity 3 and the first cavity 2 is closed, the second cavity 3 is communicated with the third cavity 4, and air enters the second adsorption tank 12 through the third cavity 4 from the inlet 8. When the valve core 7 is positioned at a right station, the air passage between the second cavity 3 and the third cavity 4 is closed, the second cavity 3 is communicated with the first cavity 2, air enters the first adsorption tank 11 from the air inlet 8 through the first cavity 2, and the air inlet 8 is communicated with the middle part of the valve core 7 no matter where the valve core 7 is positioned.
The workflow of this embodiment is as follows:
when the first adsorption tank 11 is in operation, the regeneration process of the second adsorption tank 12: the valve core 7 in the valve body 1 moves rightwards, the second cavity 3 is communicated with the first cavity 2, the second cavity 3 is closed with the third cavity 4, the first adsorption tank 11 is closed with the first exhaust device 9, the second adsorption tank 12 is opened with the second exhaust device 10, compressed air enters from the air inlet 8 and enters the first adsorption tank 11 through the first cavity 2, moisture of the compressed air is absorbed by the adsorbent in the first adsorption tank 11, most of the dried compressed air flows out from the air outlet 16 through the one-way valve 13 to achieve the drying purpose, the other small part of the dried compressed air enters the second adsorption tank 12 through the regulating valve 15, the pressure of the second adsorption tank 12 is small, the dried compressed air takes away moisture contained in the adsorbent in the second adsorption tank 12 to dry the adsorbent in the second adsorption tank 12, and the small part of the compressed air passes through the second adsorption tank 12 and the second exhaust device 10, is discharged by the muffler 17.
Pressure equalizing flow: after the last flow is carried out for a period of time, the pressure equalizing flow is started. At the moment, the valve core 7 in the valve body 1 is close to the right, the second cavity 3 is communicated with the first cavity 2, the second cavity 3 is closed with the third cavity 4, the first adsorption tank 11 and the first exhaust device 9 are opened, the second adsorption tank 12 and the second exhaust device 10 are closed, compressed air enters from the air inlet 8, the first cavity 2 enters the first adsorption tank 11, moisture of the compressed air is absorbed by an adsorbent in the first adsorption tank 11, most of the dried compressed air flows out from the air outlet 16 through the one-way valve 13 to achieve the drying purpose, the other small part of the dried compressed air enters the second adsorption tank 12 through the regulating valve 15, and due to the fact that the second adsorption tank 12 and the second exhaust device 10 are closed, the pressure of the second adsorption tank 12 gradually rises, and when the pressures of the two tanks are balanced, the next flow is started.
The regeneration process of the first adsorption tank 11 when the second adsorption tank 12 works: after the previous process, at this time, the first adsorption tank 11 and the first exhaust device 9 are opened, the second adsorption tank 12 and the second exhaust device 10 are closed, the pressure of the first adsorption tank 11 is rapidly reduced, the valve element 7 rapidly moves to the left under the combined action of the gas pressure in the third cavity 4 and the gas pressure in the second cavity 3, the second cavity 3 and the first cavity 2 are closed, the second cavity 3 and the third cavity 4 are communicated, the compressed gas enters from the gas inlet 8 and enters the second adsorption tank 12 from the third cavity 4, the moisture in the compressed air is absorbed by the adsorbent in the second adsorption tank 12, most of the dried compressed air flows out from the gas outlet 16 through the check valve 14 to achieve the drying purpose, the other small part of the dried compressed air enters the first adsorption tank 11 through the regulating valve 15, the pressure of the first adsorption tank 11 is small, the dried compressed air takes away the moisture contained in the adsorbent in the first adsorption tank 11, the adsorbent in the first adsorption tank 11 is dried and this small part of the compressed air is discharged through the first adsorption tank 11 and the first exhaust device 9 by the muffler 17.
Pressure equalizing flow: after the last flow is carried out for a period of time, the pressure equalizing flow is started. At this time, the valve core 7 of the valve body 1 is close to the left, the second cavity 3 is closed with the first cavity 2, the second cavity 3 is communicated with the third cavity 4, the first adsorption tank 11 is closed with the first exhaust device 9, the second adsorption tank 12 is closed with the second exhaust device 10, the compressed air enters from the air inlet 8 and enters the second adsorption tank 12 from the third cavity 4, the moisture of the compressed air is absorbed by the adsorbent in the second adsorption tank 12, most of the dry compressed air flows out from the air outlet 16 through the check valve 14, the drying purpose is achieved, another small part of dry compressed air enters the first adsorption tank 11 through the regulating valve 15, the pressure of the first adsorption tank 11 is gradually increased due to the fact that the first adsorption tank 11 is closed with the first exhaust device 9, when the pressure of the two tanks is equalized, the second adsorption tank 12 regenerates when the first adsorption tank 11 works, and the process is circulated.
Example 2: referring to fig. 2, compared with embodiment 1, the following points are different: the first cavity 2 is further provided with a first outlet 18, the third cavity 4 is provided with a second outlet 19, the first exhaust device 9 is connected to the first outlet 18, and the second exhaust device 10 is connected to the second outlet 19.
Example 3: referring to fig. 3, the utility model provides a pressure swing adsorption desiccator inlet structure, or nitrogen making oxygenerator's structure, it is including a valve body 1, first adsorption tank 11 and second adsorption tank 12, 1 inside ground that runs through of valve is equipped with first cavity 2, second cavity 3 and third cavity 4 in proper order, 3 both ends of second cavity communicate with first cavity 2 and third cavity 4 respectively, second cavity 3 communicates in gas feed 8, it is equipped with a case 7 to slide in the second cavity 3, and this case 7 is preferred to be the I shape, and 8 intercommunication case 7 middle parts of gas feed, this case 7 both ends are equipped with first valve block 5 and second valve block 6 respectively and are used for the break-make the blow vent at 3 both ends of second cavity. The valve body 1 is further provided with a fourth cavity 20 communicated with the outside through a third outlet 21, the first cavity 2 is further provided with a first outlet 18, the third cavity 4 is provided with a second outlet 19, two ends of the fourth cavity 20 are respectively communicated with the first cavity 2 and the third cavity 4 through the first outlet 18 and the second outlet 19, a first exhaust device 9 and a second exhaust device 10 are respectively arranged at the communication positions of the first cavity and the third cavity for switching on and off gas passages, the first exhaust device 9 and the second exhaust device 10 are cylinders or pneumatic valves, and the fourth cavity 20 is communicated with the outside through a silencer 17 to reduce noise.
The first cavity 2 is communicated with the lower part of an inner cavity of a first adsorption tank 11 through a pipeline, the third cavity 4 is communicated with the lower part of an inner cavity of a second adsorption tank 12 through a pipeline, the upper part of the inner cavity of the first adsorption tank 11 is communicated with the upper part of the inner cavity of the second adsorption tank 12 through a regulating valve 15, the upper part of the inner cavity of the first adsorption tank 11 is communicated with an exhaust port 16 through a first one-way valve 13, the upper part of the inner cavity of the second adsorption tank 12 is communicated with the exhaust port 16 through a second one-way valve 14, and the passage directions of the first one-way valve 13 and the second one-way valve 14 are both directed to the exhaust port 16.
When the valve core 7 is positioned at a left station, the air path between the second cavity 3 and the first cavity 2 is closed, the second cavity 3 is communicated with the third cavity 4, and air enters the second adsorption tank 12 through the third cavity 4 from the air inlet 8. When the valve core 7 is positioned at a right station, the air passage between the second cavity 3 and the third cavity 4 is closed, the second cavity 3 is communicated with the first cavity 2, air enters the first adsorption tank 11 from the air inlet 8 through the first cavity 2, and the air inlet 8 is communicated with the middle part of the valve core 7 no matter where the valve core 7 is positioned.
When the first exhaust device 9 retracts, the first outlet 18 is opened, the first cavity 2 is communicated with the outside through the first outlet 18 and the fourth cavity 20, and when the first exhaust device 9 extends, the first outlet 18 is closed. When the second exhaust device 10 is retracted, the second outlet 19 is opened, the first cavity 2 is communicated with the outside through the second outlet 19 and the fourth cavity 20, and when the second exhaust device 10 is extended, the second outlet 19 is closed.
The working procedure is as in example 1.
In this embodiment 3, the first exhaust device 9 and the second exhaust device 10 are disposed on the valve body 1, and the valve body 1 is taken as a whole, so that when a pipeline is assembled, only the first cavity 2 needs to be connected to the first adsorption tank 11, and the third cavity 4 needs to be connected to the second adsorption tank 12, thereby greatly improving the assembly efficiency.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for convenience of description and simplification of description, but not for indicating or implying that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (7)
1. The utility model provides a pressure swing adsorption drying mechanism nitrogen oxygenerator's inlet structure, including a valve body, first adsorption tank and second adsorption tank, its characterized in that: the valve body is internally provided with a second cavity, the two ends of the second cavity are communicated with a first cavity and a third cavity, the middle of the second cavity is communicated with a gas inlet, a valve core is arranged in the second cavity in a sliding mode, the two ends of the valve core are respectively provided with a first valve plate and a second valve plate which are used for switching on and off gas passages at the two ends of the second cavity, the first cavity is communicated with an inner cavity of the first adsorption tank, the third cavity is communicated with an inner cavity of the second adsorption tank, the first cavity is connected with a first exhaust device communicated with the outside in a parallel mode, and the third cavity is connected with a second exhaust device communicated with the outside in a parallel mode.
2. The air intake structure of a pressure swing adsorption dryer nitrogen-making oxygen generator of claim 1, wherein: the valve core is I-shaped.
3. The air intake structure of a pressure swing adsorption dryer nitrogen-making oxygen generator of claim 1, wherein: the first exhaust device and the second exhaust device are both electric valves or pneumatic valves.
4. The air intake structure of a pressure swing adsorption dryer nitrogen-making oxygen generator of claim 3, wherein: the first exhaust device and the second exhaust device are communicated with the outside through a silencer.
5. The air intake structure of a pressure swing adsorption dryer nitrogen-making oxygen generator of claim 1, wherein: the valve body is also provided with a fourth cavity communicated with the outside, the fourth cavity is respectively communicated with the first cavity and the third cavity, and the communicated part is respectively provided with the first exhaust device and the second exhaust device for switching on and off the gas passage.
6. The air intake structure of a pressure swing adsorption dryer nitrogen-making oxygen generator of claim 5, wherein: the fourth cavity is communicated with the outside through a silencer.
7. The air intake structure of a pressure swing adsorption dryer nitrogen-making oxygen generator as claimed in any one of claims 1 to 6, wherein: the upper part of the inner cavity of the first adsorption tank is communicated with the upper part of the inner cavity of the second adsorption tank through a regulating valve, the upper part of the inner cavity of the first adsorption tank is communicated with the exhaust port through a first one-way valve, and the upper part of the inner cavity of the second adsorption tank is communicated with the exhaust port through a second one-way valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921487308.8U CN210656152U (en) | 2019-09-09 | 2019-09-09 | Air inlet structure of nitrogen oxygen generator with pressure swing adsorption drying mechanism |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921487308.8U CN210656152U (en) | 2019-09-09 | 2019-09-09 | Air inlet structure of nitrogen oxygen generator with pressure swing adsorption drying mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110526217A (en) * | 2019-09-09 | 2019-12-03 | 佛山市天地元一净化设备有限公司 | A kind of air intake structure of Adsorbing drying by pressure variation mechanism nitrogen oxygenerator |
-
2019
- 2019-09-09 CN CN201921487308.8U patent/CN210656152U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110526217A (en) * | 2019-09-09 | 2019-12-03 | 佛山市天地元一净化设备有限公司 | A kind of air intake structure of Adsorbing drying by pressure variation mechanism nitrogen oxygenerator |
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