Soft water recovery device for pressure swing adsorption oxygen generator

Abstract

The utility model relates to a soft water recovery device for a pressure swing adsorption oxygen generator, and belongs to the field of pressure swing adsorption oxygen generation equipment. The soft water recovery device comprises a device body, an inlet is formed in the top of the device body, and a soft water outlet is formed in the bottom. The soft water recovery device further comprises an inner tank body, the inner tank body is fixedly arranged in the device body in the mode that a gap is formed between the inner tank body and the inner wall of the device body, and a suction inlet is formed in the position, corresponding to the inlet, of the top of the inner tank body. The inner tank body is internally provided with a rotatable first sleeve along the axial direction, the surface of the first sleeve is fixedly provided with a plurality of arc-shaped blades, and the tank wall of the inner tank body is provided with a plurality of annular drainage channels. And the soft water flows out through the drainage channel on the tank wall of the inner tank body and the soft water outlet at the bottom of the device main body, so that soft water and gas can be separated, and the soft water is further collected and recycled to reduce the production cost and waste.

Description

Technical Field

[0001] The utility model belongs to the field of pressure swing adsorption oxygen making equipment and relates to a soft water recovery device used for a pressure swing adsorption oxygen making machine. Background Art

[0002] The pressure swing adsorption oxygen generator is mainly composed of a blower, a vacuum pump, a switching valve, an adsorber and an oxygen balance tank. After the raw air passes through the inlet filter to remove dust particles, it is pressurized to 0.3-0.5 barg by the Roots blower and then enters one of the adsorbers. The adsorber is filled with adsorbent, and the bottom of the adsorber is filled with activated alumina. Water, carbon dioxide, and a small amount of other gas components are adsorbed by the activated alumina at the inlet of the adsorber; the top of the activated alumina is filled with zeolite molecular sieves, and nitrogen is adsorbed by the zeolite molecular sieves. The remaining oxygen (including argon) is a non-adsorbed component and is discharged from the top outlet of the adsorber as product gas to the oxygen balance tank.

[0003] When the adsorber has adsorbed to a certain extent, the adsorbent therein will reach a saturated state. At this time, the adsorber is evacuated by a vacuum pump in the opposite direction of adsorption, and the vacuum degree is 0.65-0.75 barg. The adsorbed moisture, carbon dioxide, nitrogen and a small amount of other gas components are extracted and discharged to the atmosphere, and the adsorbent is regenerated.

[0004] Since the adsorbent regeneration process has certain requirements for vacuum degree, the vacuum pump needs to use soft water for water sealing when working. Soft water refers to water that does not contain or contains less soluble calcium and magnesium compounds, and its price is relatively high. The vacuum pump consumes a high amount of soft water, and the existing vacuum pump is not equipped with a soft water recovery device, which causes soft water to be wasted, resulting in excessively high production costs. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a soft water recovery device for a pressure swing adsorption oxygen generator, so as to recover the soft water when the vacuum pump is working, thereby reducing the production cost.

[0006] To achieve the above object, the utility model provides a soft water recovery device for a pressure swing adsorption oxygen generator. The oxygen generator comprises a vacuum pump, and the soft water recovery device is attached to the exhaust end of the vacuum pump.

[0007] The soft water recovery device comprises a device body, the top of the device body is provided with an inlet, and the bottom of the device body is provided with a soft water outlet.

[0008] The soft water recovery device also includes an inner tank body, which is fixed in the device body in a manner of having a gap with the inner wall of the device body, and a suction port is opened at the top of the inner tank body corresponding to the inlet position.

[0009] The inner tank body is provided with a first sleeve which is rotatable along the axial direction, and a plurality of arc-shaped blades are fixedly arranged on the surface of the first sleeve. A plurality of annular drainage channels are opened on the tank wall of the inner tank body to discharge the separated soft water through the drainage channels into the gap between the inner tank body and the device body, and then discharged through the soft water outlet.

[0010] An exhaust port is arranged at the bottom of the device body, and the exhaust port passes through the bottom of the inner tank body and enters the inner tank body to exhaust the separated gas.

[0011] Optionally, a plurality of drainage channels are provided on the tank wall of the inner tank body, and at least one drainage channel is provided at the bottom of the inner tank body.

[0012] Optionally, a plurality of first drainage channels are provided on the tank wall of the inner tank body and are distributed at equal intervals along the axial direction of the inner tank body, and a second drainage channel is provided at the bottom of the inner tank body.

[0013] Optionally, the drainage channels all have a slope sloping downward from the inside to the outside.

[0014] Optionally, a plurality of support rods are provided in the drainage channel.

[0015] Optionally, the suction port is recessed toward the interior of the inner tank body to form a funnel-shaped airflow channel.

[0016] Optionally, a limiting member is provided at the open end of the suction port, and the first end of the first sleeve close to the inlet is inserted into a limiting groove formed by the limiting member.

[0017] Optionally, the limiting member is connected to the open end of the suction port via an L-shaped fixing rod.

[0018] Optionally, the soft water recovery device also includes a second rotating rod arranged to rotate radially along the inner tank body, and a first transmission assembly is provided at the first end of the second rotating rod close to the first sleeve and the second end of the first sleeve close to the exhaust port, and the first transmission assembly enables the second rotating rod and the first sleeve to rotate synchronously.

[0019] Optionally, the first transmission assembly includes a first conical tooth provided at the second end of the first sleeve close to the exhaust port, and a second conical tooth provided at the first end of the second rotating rod close to the first sleeve, and the first conical tooth and the second conical tooth are meshed with each other.

[0020] Optionally, the soft water recovery device also includes a first rotating rod rotatably arranged in the first sleeve, and along the airflow direction, the first rotating rod passes through the first sleeve and extends to the exhaust port; against the airflow direction, the first rotating rod passes through the first sleeve and extends to the inlet through the suction port.

[0021] Optionally, a first spiral blade is provided on the rod body of the first rotating rod located at the inlet and the suction port, and a second spiral blade is provided on the rod body of the first rotating rod located in the exhaust port.

[0022] Optionally, the soft water recovery device also includes a third rotating rod arranged to rotate radially along the inner tank body, and second transmission components are provided on the first end of the third rotating rod close to the first rotating rod and on the rod body of the first rotating rod close to the second spiral blade. The second transmission assembly enables the first rotating rod and the third rotating rod to rotate synchronously.

[0023] Optionally, the second transmission assembly includes a gear disposed on the rod body of the first rotating rod close to the second spiral blade, and a side gear disposed on the first end of the third rotating rod close to the first rotating rod, and the gear and the side gear are meshed with each other.

[0024] Optionally, a transmission box is provided at the second end of the first sleeve near the exhaust port, and the second end of the first sleeve is inserted into the transmission box.

[0025] Optionally, along the airflow direction, the first rotating rod passes through the first sleeve into the transmission box, passes through the transmission box, and finally extends to the exhaust port; against the airflow direction, the first rotating rod passes through the limit groove and the limit member, and extends to the inlet through the suction port.

[0026] Optionally, the soft water recovery device further comprises a second sleeve disposed in the device body, one end of the second sleeve being fixedly disposed on the side of the transmission box, and the other end of the second sleeve passing through the inner tank body and then embedded in the side wall of the device body. The second rotating rod is rotatably disposed in the second sleeve, and the second rotating rod passes through the device body and the inner tank body from outside the device body into the transmission box.

[0027] Optionally, the soft water recovery device also includes a third sleeve arranged in the device body, one end of the third sleeve is fixed to the side of the transmission box, and the other end passes through the inner tank body and is embedded in the side wall of the device body; the third rotating rod is rotatably arranged in the third sleeve, and the third rotating rod passes through the device body and the inner tank body from the outside of the device body into the transmission box.

[0028] Optionally, the second end of the second rotating rod located outside the device body is connected to a first motor, and the first motor is arranged in a first motor box located on the outer wall of the device body; the second end of the third rotating rod located outside the device body is connected to a second motor, and the second motor is arranged in a second motor box located on the outer wall of the device body.

[0029] The beneficial effects of the utility model are:

[0030] The soft water recovery device provided by the utility model is provided with a rotatable first sleeve in the inner tank body, and a plurality of arc-shaped blades are provided outside the first sleeve body, and the soft water in the exhaust of the vacuum pump is separated by the centrifugal force provided by the rotation of the arc-shaped blades. Furthermore, a plurality of annular drainage channels are provided in the inner tank body, which is conducive to the separated soft water to be discharged from the inner tank body and flow to the bottom of the gap between the device body and the inner tank body, and then flow out through the soft water discharge port provided at the bottom of the device body. The soft water recovery device provided by the utility model can realize the separation of soft water and gas, and further collect and recover soft water, so as to reduce production costs and reduce the waste of production materials.

[0031] Furthermore, the utility model also provides a rotatable first rotating rod in the inner tank body, and the two ends of the first rotating rod are respectively extended into the inlet and the exhaust port. The first spiral blade and the second spiral blade are respectively provided at the two ends of the first rotating rod to help suck the exhaust of the vacuum pump into the inner tank body, and also to help discharge the gas after gas-liquid separation to the outside. In addition, the first spiral blade is located between the inlet of the device body and the suction port of the inner tank body, and can also suck the gas that enters the gap between the recovery device and the inner tank body due to the rotation of the arc blade into the inner tank body, further ensuring that the gas in the soft water is fully separated.

[0032] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be described in detail below in conjunction with the accompanying drawings, in which:

[0034] Figure 1 A front view of a soft water recovery device for a pressure swing adsorption oxygen generator provided by the utility model;

[0035] Figure 2 A main sectional view of a soft water recovery device for a pressure swing adsorption oxygen generator provided by the utility model;

[0036] Figure 3 A top sectional view of a soft water recovery device for a pressure swing adsorption oxygen generator provided by the utility model;

[0037] Figure 4 This is an enlarged view of the details of point A of the pressure swing adsorption oxygen generator provided by the utility model;

[0038] Figure 5 This is an enlarged view of the details of point B of the pressure swing adsorption oxygen generator provided by the utility model.

[0039] Reference numerals:

[0040] 100-device body; 101-inlet; 102-exhaust port; 103-soft water outlet; 104-connecting rod; 200-inner tank; 201-first drain channel; 202-second drain channel; 203-support rod; 204-intake port; 205-limiting member; 206-limiting groove; 207-L-shaped fixing rod; 300-first sleeve; 301-arc blade; 302-first conical tooth; 400-first rotating rod; 401-first spiral blade; 402-gear; 403-second spiral blade; 500-transmission box; 600-second sleeve; 601-second rotating rod; 602-second conical tooth; 700-third sleeve; 701-third rotating rod; 702-side gear; 800-first motor box; 801-first motor; 900-second motor box; 901-second motor. DETAILED DESCRIPTION

[0041] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0042] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present utility model. In order to better illustrate the embodiments of the present utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0043] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back" and the like indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0044] like Figure 1 As shown, the utility model provides a soft water recovery device for a pressure swing adsorption oxygen generator, the recovery device includes a device body 100, the top of the device body 100 is provided with an inlet 101, and the bottom is provided with an exhaust port 102. The soft water recovery device is attached to the exhaust port 102 of the vacuum pump of the pressure swing adsorption oxygen generator, and is used to separate the soft water in the exhaust of the vacuum pump. The first motor box 800 and the second motor box 900 are respectively arranged on both sides of the device body 100, and a soft water outlet 103 is provided beside the exhaust port 102 at the bottom of the device body 100. The exhaust of the vacuum pump enters the device body 100 from the inlet 101, and after separation, the gas is discharged from the exhaust port 102, and the soft water is discharged from the soft water outlet 103.

[0045] like Figure 2 As shown, an inner tank body 200 is fixed in the cavity inside the device body 100, and the inner tank body 200 is fixed in the device body 100 through a plurality of connecting rods 104, one end of the connecting rod 104 is connected to the inner wall of the device body 100, and the other end is connected to the outer wall of the inner tank body 200. A suction port 204 is provided at the top of the inner tank body 200 corresponding to the position of the inlet 101 of the device body 100, and the suction port 204 is recessed into the inner tank body 200 to form a funnel-shaped airflow channel. The exhaust port 102 of the device body 100 passes through the bottom of the inner tank body 200 and enters the inner tank body 200, that is, the inner tank body 200 and the device body 100 share one exhaust port 102.

[0046] Furthermore, if Figure 2 As shown in Figure 3, a rotatable first sleeve 300 is axially arranged in the inner tank 200, and a plurality of arc-shaped blades 301 are fixed on the surface of the first sleeve 300. In order to limit the axial displacement of the first sleeve 300, a limiter 205 is arranged at the open end of the suction port 204, and the limiter 205 is connected to the open end of the suction port 204 through an L-shaped fixing rod 207. The limiter 205 forms a cylindrical limiter groove 206, and the first end of the first sleeve 300 close to the inlet 101 is inserted into the limiter groove 206. Preferably, a bearing is arranged in the limiter groove 206 so that the first sleeve 300 can rotate in the limiter groove 206.

[0047] Furthermore, if Figure 5As shown, a transmission box 500 is arranged at the second end of the first sleeve 300 near the exhaust port 102, the second end of the first sleeve 300 is inserted into the transmission box 500, and the second end is provided with a first conical tooth 302. The second sleeve 600 is arranged on the side of the transmission box 500 in a manner perpendicular to the airflow direction, one end of the second sleeve 600 is fixed on the side of the transmission box 500, and the other end passes through the inner tank 200 and is embedded in the side wall of the device body 100. A second rotating rod 601 is rotatably arranged in the second sleeve 600, and the second rotating rod 601 passes through the device body 100 and the inner tank 200 from the outside of the device body 100 in a manner perpendicular to the airflow direction and enters the transmission box 500. The first end of the second rotating rod 601 located in the transmission box 500 is provided with a second conical tooth 602 meshing with the first conical tooth 302 , and the second end of the second rotating rod 601 located outside the device body 100 is connected to the first motor 801 , which is arranged in the first motor box 800 .

[0048] When the first motor 801 rotates, under the transmission action of the first bevel gear 402 and the second bevel gear 402, the second rotating rod 601 connected to the first motor 801 will drive the first sleeve 300 to rotate synchronously, and then drive the arc blade 301 thereon to rotate together. The arc blade 301 stirs the gas in the inner tank body 200, so that the soft water in the gas is thrown onto the inner wall surface of the inner tank body 200 under the action of centrifugal force. Further, as Figure 2 As shown, a plurality of first drainage channels 201 are provided in an annular manner on the tank wall of the inner tank body 200 , and the plurality of first drainage channels 201 are distributed at equal intervals and have a diamond-shaped cross section. In particular, a second drainage channel 202 is provided at the bottom of the tank wall of the inner tank body 200 .

[0049] The first drain channel 201 and the second drain channel 202 cut off the tank wall of the inner tank body 200, so a plurality of support rods 203 are provided in the first drain channel 201 and the second drain channel 202 to maintain the continuity and structural stability of the tank wall of the inner tank body 200. The soft water separated by the rotation of the arc-shaped blades 301 is thrown onto the inner wall surface of the inner tank body 200, and then discharged into the gap between the inner tank body 200 and the device body 100 through the first drain channel 201 and the second drain channel 202, and finally discharged through the soft water outlet 103 at the bottom of the device body 100, so that the soft water can be collected and recycled.

[0050] like Figure 2 , Figure 4As shown, a first rotating rod 400 is rotatably provided in the first sleeve 300. Along the airflow direction, the first rotating rod 400 passes through the first sleeve 300 and enters the transmission box 500, and passes through the transmission box 500, and finally extends to the exhaust port 102; against the airflow direction, the first rotating rod 400 passes through the limiting groove 206 and the limiting member 205, and extends to the inlet 101 through the suction port 204. A first spiral blade 401 is provided on the rod body of the first rotating rod 400 located in the inlet 101 and the suction port 204, and a second spiral blade 403 is provided on the rod body of the first rotating rod 400 located in the exhaust port 102.

[0051] Furthermore, if Figure 5 As shown, the first rotating rod 400 is provided with a gear 402 on the rod body located in the transmission box 500. The third sleeve 700 is provided on the side of the transmission box 500 in a manner perpendicular to the airflow direction. One end of the third sleeve 700 is fixed on the side of the transmission box 500, and the other end passes through the inner tank 200 and is embedded in the side wall of the device body 100. The third sleeve 700 is rotatably provided with a third rotating rod 701. The third rotating rod 701 passes through the device body 100 and the inner tank 200 from the outside of the device body 100 in a manner perpendicular to the airflow direction and enters the transmission box 500. The first end of the third rotating rod 701 located in the transmission box 500 is provided with a side gear 702 meshing with the gear 402, and the second end of the third rotating rod 701 located outside the device body 100 is connected to the second motor 901, which is provided in the second motor box 900.

[0052] When the second motor 901 rotates, under the transmission action of the gear 402 and the side gear 702, the third rotating rod 701 connected to the second motor 901 will drive the first rotating rod 400 to rotate synchronously, thereby causing the first spiral blade 401 and the second spiral blade 403 at both ends of the first rotating rod 400 to rotate synchronously. The first spiral blade 401 rotates in the inlet 101 and the suction port 204 to suck the gas extracted by the vacuum pump into the inner tank body 200. The second spiral blade 403 rotates in the exhaust port 102 to discharge the gas after gas-liquid separation to the outside. It should be noted that the first motor 801 and the second motor 901 are synchronously operated, that is, the soft water recovery device provided by the utility model can synchronously complete the air intake, gas-liquid separation and exhaust processes. In other words, the soft water recovery device provided by the utility model can perform continuous air intake, gas-liquid separation and exhaust processes.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the utility model.

Claims

1. A soft water recovery device for a pressure swing adsorption oxygen generator, the oxygen generator comprising a vacuum pump, the soft water recovery device being attached to the exhaust end of the vacuum pump, characterized in that: The device comprises a device body (100), wherein the top of the device body (100) is provided with an inlet (101), and the bottom of the device body (100) is provided with a soft water outlet (103); It also comprises an inner tank body (200), wherein the inner tank body (200) is fixedly arranged in the device body (100) in a manner of having a gap with the inner wall of the device body (100), and a suction port (204) is provided at the top of the inner tank body (200) at a position corresponding to the position of the inlet (101); wherein: A first sleeve (300) is rotatably arranged in the inner tank body (200) along its axial direction, a plurality of arc-shaped blades (301) are fixedly arranged on the surface of the first sleeve (300), and a plurality of annular drainage channels are opened on the tank wall of the inner tank body (200) so as to discharge the separated soft water through the drainage channels into the gap between the inner tank body (200) and the device body (100), and then discharge the separated soft water through the soft water discharge port (103); The bottom of the device body (100) is provided with an exhaust port (102), and the exhaust port (102) passes through the bottom of the inner tank body (200) and enters the inner tank body (200) to exhaust the separated gas.

2. The device according to claim 1, characterized in that: A plurality of drainage channels are provided on the tank wall of the inner tank body (200), and at least one of the drainage channels is arranged at the bottom of the inner tank body (200).

3. The device according to claim 2, characterized in that: The drainage channels all have a slope that slopes downward from the inside to the outside.

4. The device according to claim 2, characterized in that: A plurality of support rods (203) are arranged in the drainage channel.

5. The device according to claim 1, characterized in that: The suction port (204) is recessed into the inner tank body (200) to form a funnel-shaped airflow channel.

6. The device according to claim 5, characterized in that: A limiting member (205) is provided at the open end of the suction port (204), and the first end of the first sleeve (300) close to the inlet (101) is inserted into a limiting groove (206) formed by the limiting member (205).

7. The device according to claim 1, characterized in that: It also includes a second rotating rod (601) arranged to rotate radially along the inner tank body (200), and a first transmission assembly is provided at a first end of the second rotating rod (601) close to the first sleeve (300) and a second end of the first sleeve (300) close to the exhaust port (102), and the first transmission assembly enables the second rotating rod (601) and the first sleeve (300) to rotate synchronously.

8. The device according to claim 7, characterized in that: It also includes a first rotating rod (400) rotatably disposed in the first sleeve (300); Along the airflow direction, the first rotating rod (400) passes through the first sleeve (300) and extends into the exhaust port (102); Against the direction of airflow, the first rotating rod (400) passes through the first sleeve (300) and extends through the suction port (204) to the inlet (101).

9. The device according to claim 8, characterized in that: The rod body of the first rotating rod (400) located at the inlet (101) and the suction port (204) is provided with a first spiral blade (401), and the rod body of the first rotating rod (400) located in the exhaust port (102) is provided with a second spiral blade (403).

10. The device according to claim 9, characterized in that: It also includes a third rotating rod (701) arranged to rotate radially along the inner tank body (200), and a second transmission assembly is arranged on the first end of the third rotating rod (701) close to the first rotating rod (400) and the rod body of the first rotating rod (400) close to the second spiral blade (403), and the second transmission assembly enables the first rotating rod (400) and the third rotating rod (701) to rotate synchronously.

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