Pressure swing adsorption apparatus based on composite bed

Abstract

The utility model relates to pressure swing adsorption device field discloses a kind of based on composite bed's pressure swing adsorption device, including box, the inside of the box is fixedly connected with two chutes, the inside of the box is provided with composite bed, the left and right sides of the bottom side of the composite bed are all installed with multiple pulley that can make composite bed slide on chute, the inside of the composite bed is provided with adsorption component, to be used to adsorb gas, the front side of the box is rotatably connected with box door by hinge, the rear side of the box door is provided with two recesses for pulley rolling, the top side of the box front side is provided with fixed component, to be used to fix box door on the box.In the utility model, the adsorbent is pressed by the elastic pressing plate, to prevent the adsorbent from loosening, and to provide continuous and stable compression force, to avoid fatigue failure of the elastic pressing plate after long-term compression, and to facilitate the disassembly and assembly of the composite bed layer by the staff, so as to facilitate the replacement of the staff.

Description

Technical Field

[0001] This utility model relates to the field of pressure swing adsorption devices, and in particular to a pressure swing adsorption device based on a composite bed. Background Technology

[0002] Pressure swing adsorption (PSA) is a device that utilizes the difference in adsorption capacity of an adsorbent for different gas components under varying pressures to achieve gas separation and purification. Through periodic cycles of pressurized adsorption and depressurized desorption, the target component (such as oxygen or hydrogen) in the gas mixture is selectively retained by the adsorbent at high pressure, or impurities are adsorbed. At low pressure, the target component is desorbed and released, or impurities are desorbed and discharged, thus yielding high-purity gas. This device is widely used in medical oxygen production, industrial hydrogen production, and laboratory gas purification, featuring flexible operation, high separation efficiency, and the elimination of complex chemical reagents. It can meet the needs of different purities for small to medium throughput.

[0003] However, current pressure swing adsorption (PSA) devices have the following drawbacks: First, the existing elastic pressure plates are prone to fatigue failure due to long-term compression, and cannot continuously and stably provide clamping force to the adsorbent, resulting in loosening and pulverization of the adsorbent, affecting the separation effect. Second, the composite bed is inconvenient to disassemble and assemble, and the operation of changing the adsorbent is cumbersome and time-consuming, increasing the difficulty of maintenance and downtime, and reducing the operating efficiency of the device.

[0004] In response to this technical problem, this application proposes a pressure swing adsorption device based on a composite bed. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a pressure swing adsorption device based on a composite bed. This device uses an elastic pressure plate to press the adsorbent together, preventing it from loosening and providing a continuous and stable clamping force. This avoids fatigue failure of the elastic pressure plate after long-term compression and facilitates the disassembly and assembly of the composite bed for easy replacement.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A pressure swing adsorption (PSA) device based on a composite bed includes a housing with two sliding grooves fixedly connected inside. A composite bed is disposed inside the housing, and multiple pulleys are installed on both the left and right sides of the bottom of the composite bed to allow the composite bed to slide on the sliding grooves. An adsorption assembly is disposed inside the composite bed for adsorbing gas. A door is rotatably connected to the front of the housing via a hinge. Two grooves for the pulleys to roll are formed on the rear side of the door. A fixing assembly is disposed on the top side of the front of the housing to fix the door to the housing.

[0008] Furthermore, the adsorption assembly includes a drawer seat inserted inside the composite bed, the drawer seat having two stainless steel woven meshes inside, and an adsorbent for adsorbing and reacting air being disposed between the two stainless steel woven meshes.

[0009] Furthermore, telescopic rods are fixedly connected to the four corners of the top side inside the composite bed, and elastic pressure plates are fixedly connected to the bottom ends of the four telescopic rods. The bottom side of the elastic pressure plate abuts against the top side of the stainless steel woven mesh on the top side, and a pull rod is fixedly connected to the top side of the elastic pressure plate, which passes through the top side of the composite bed.

[0010] Furthermore, a spring is fitted on the outer wall of the telescopic rod, the top end of the spring is connected to the bottom side inside the composite bed, and the bottom end of the spring is connected to the top side of the elastic pressure plate. Both the elastic pressure plate and the interior of the composite bed are provided with ventilation holes for gas flow.

[0011] Furthermore, the fixing component includes two circular grooves formed on the top front side of the box body, with a rod slidably connected inside the circular groove. The bottom end of the rod is inserted into the top side of the box door, and a ring is rotatably connected to the top end of the rod, with the ring fitted inside the circular groove.

[0012] Furthermore, a positioning rod is fixedly connected to the outer wall of the ring, a positioning groove is provided on one side of the circular groove, the positioning rod abuts against the inside of the positioning groove, and a pull ring is fixedly connected to one side of the positioning rod.

[0013] Furthermore, a gas supply pipe for inputting gas into the box body is fixedly connected to the bottom side of the box body, and an exhaust pipe for outputting gas out of the box body is fixedly connected to the top side of the box body.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the adsorbent is pressed by an elastic plate to prevent it from loosening, and a spring provides a pushing force to the elastic plate so that the elastic plate can maintain the pressing force on the adsorbent. When the volume of the adsorbent changes due to adsorption / desorption, the spring can provide a continuous and stable pressing force to avoid fatigue failure of the elastic plate after long-term compression.

[0016] 2. In this utility model, by rotating the box door so that its top is rotated to the ground, the groove and slide on the box door form a channel, so that the staff can pull out the composite bed and let the composite bed slide in the slide and groove through the pulley, thereby removing the composite bed from the box, or pushing the composite bed from the ground along the box door into the box, which makes it convenient for the staff to disassemble and assemble the composite bed layer, and thus convenient for the staff to replace it. Attached Figure Description

[0017] Figure 1 This is a perspective view of a pressure swing adsorption device based on a composite bed proposed in this utility model;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a side view of a pressure swing adsorption device based on a composite bed proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of a pressure swing adsorption device based on a composite bed proposed in this utility model;

[0021] Figure 5 This is a schematic diagram of the composite bed structure of a pressure swing adsorption device based on a composite bed proposed in this utility model;

[0022] Figure 6 This is a schematic diagram of the internal structure of a composite bed based on a pressure swing adsorption device according to the present invention.

[0023] Figure 7 This is a schematic diagram of the internal structure of the drawer seat of a pressure swing adsorption device based on a composite bed proposed in this utility model;

[0024] Figure 8 This is a schematic diagram of the composite bed extraction state of a pressure swing adsorption device based on a composite bed proposed in this utility model.

[0025] Legend:

[0026] 1. Box body; 2. Box door; 3. Exhaust pipe; 4. Insert rod; 5. Ring; 6. Positioning rod; 7. Pull ring; 8. Air supply pipe; 9. Composite bed; 10. Slide rail; 11. Pulley; 12. Drawer base; 13. Elastic pressure plate; 14. Pull rod; 15. Spring; 16. Telescopic rod; 17. Stainless steel woven mesh; 18. Adsorbent. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figure 1 , Figure 4 and Figure 5This utility model provides an embodiment of a pressure swing adsorption device based on a composite bed, comprising a housing 1, with two sliding grooves 10 fixedly connected inside the housing 1, a composite bed 9 disposed inside the housing 1, and multiple pulleys 11 installed on the left and right sides of the bottom of the composite bed 9 to allow the composite bed 9 to slide on the sliding grooves 10. A door 2 is rotatably connected to the front of the housing 1 via a hinge. (Refer to...) Figure 5 and Figure 8 Two grooves are provided on the rear side of the door 2 for the rollers 11 to roll. By rotating the door 2 so that its top is on the ground, the grooves on the door 2 and the sliding grooves 10 form a channel, allowing the operator to pull out the composite bed 9 and slide it through the rollers 11 in the sliding grooves 10 and grooves, thereby removing the composite bed 9 from the box 1, or pushing the composite bed 9 from the ground along the door 2 into the box 1. This facilitates the operator's disassembly and assembly of the composite bed layers, making it convenient for replacement. (Refer to...) Figure 1 and Figure 3 The bottom side of the chamber 1 is fixedly connected to a gas supply pipe 8 for inputting gas into the chamber 1, and the top side of the chamber 1 is fixedly connected to an exhaust pipe 3 for outputting gas from the chamber 1. Both the gas supply pipe 8 and the exhaust pipe 3 are equipped with filters to filter the gas and prevent impurities from entering the interior of the chamber 1. The bottom side of the chamber 1 is provided with a discharge port to discharge the impurities generated by the reaction. A valve is installed in the discharge port to control its opening and closing.

[0029] Reference Figures 5-7The composite bed 9 has a drawer seat 12 inserted inside. Inside the drawer seat 12 are two stainless steel woven meshes 17, which can move up and down within the drawer seat 12. Between the two stainless steel woven meshes 17 is an adsorbent 18 for adsorbing and reacting with air. The adsorbent 18 is double-layered, and the materials of the two layers can be selected according to needs, such as for oxygen production: a lower layer of Sr-LSX molecular sieve + an upper layer of Li-LSX molecular sieve. Telescopic rods 16 are fixedly connected to the four corners of the top side inside the composite bed 9. Elastic pressure plates 13 are fixedly connected to the bottom ends of the four telescopic rods 16. The bottom side of the elastic pressure plates 13 abuts against the top side of the top stainless steel woven meshes 17. The elastic pressure plates 13 are made of polyurethane, which presses the adsorbent 18 to prevent it from loosening. A pull rod 14 is fixedly connected to the top side of the elastic pressure plate 13. The pull rod 14 passes through the top side of the composite bed 9. By pulling the pull rod 14, the elastic pressure plate 13 is disengaged from the drawer seat 12, allowing the drawer seat 12 to be pulled out of the composite bed 9. A spring 15 is sleeved on the outer wall of the telescopic rod 16. The top end of the spring 15 is connected to the bottom side inside the composite bed 9, and the bottom end of the spring 15 is connected to the top side of the elastic pressure plate 13. The spring 15 provides a pushing force to the elastic pressure plate 13, allowing the elastic pressure plate 13 to maintain the compression force on the adsorbent 18. When the adsorbent 18 undergoes volume changes due to adsorption / desorption, the spring 15 provides a continuous and stable clamping force, preventing fatigue failure of the elastic pressure plate 13 after long-term compression. Ventilation holes for gas flow are provided inside both the elastic pressure plate 13 and the composite bed 9.

[0030] Reference Figure 2 Two circular grooves are provided on the top front side of the box body 1. A rod 4 is slidably connected inside the groove. The bottom end of the rod 4 is inserted into the top side of the box door 2. A ring 5 is rotatably connected to the top end of the rod 4. The ring 5 is fitted inside the groove. A positioning rod 6 is fixedly connected to the outer wall of the ring 5. A positioning groove is provided on one side of the groove. The positioning rod 6 abuts against the inside of the positioning groove. A pull ring 7 is fixedly connected to one side of the positioning rod 6. By inserting the rod 4 into the top side of the box door 2, the box door 2 is fixed to the box body 1, keeping the box body 1 closed. When it is necessary to open the box door 2, slide the positioning rod 6 upward to slide it to the side of the positioning groove. Then rotate the positioning rod 6 to rotate it into the positioning groove, thereby disengaging the rod 4 from the box door 2 and fixing it. Then the box door 2 can be rotated to open the box body 1.

[0031] Working principle: First, gas is introduced into the chamber 1 through the gas supply pipe 8. The gas enters the bottom of the chamber 1 and then flows upward. When the gas passes through the composite bed 9, it will react with the adsorbent 18 inside. The reacted gas is discharged from the chamber 1 through the exhaust pipe 3 at the top, while the impurities produced by the reaction can be discharged through the discharge port at the bottom of the chamber 1. When it is necessary to replace the adsorbent 18, slide the positioning rod 6 upward to make it slide to the side of the positioning groove, and then rotate the positioning rod 6 to make it rotate into the positioning groove, thereby causing the insertion rod 4 to disengage from the chamber door 2. Secure it in place, then turn the door 2 to open the box 1, and then pull the composite bed 9 out of the box 1. The composite bed 9 will slide in the slide groove 10 and the groove via the pulley 11, thereby removing the composite bed 9 from the box 1. Then pull the lever 14 to disengage the elastic pressure plate 13 from the inside of the drawer seat 12, and then pull the drawer seat 12 out of the composite bed 9. Take out the adsorbent 18 from the drawer seat 12, and then put the new adsorbent 18 into the drawer seat 12. Then repeat the above process in reverse to put the composite bed 9 into the box 1.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressure swing adsorption device based on a composite bed, characterized in that, The box includes a housing (1), which has two sliding grooves (10) fixedly connected inside. A composite bed (9) is installed inside the housing (1). Multiple pulleys (11) are installed on the left and right sides of the bottom of the composite bed (9) to allow the composite bed (9) to slide on the sliding grooves (10). An adsorption assembly is installed inside the composite bed (9) for adsorbing gas. A door (2) is rotatably connected to the front of the housing (1) via a hinge. Two grooves are opened on the rear side of the door (2) for the pulleys (11) to roll. A fixing assembly is provided on the top side of the front of the housing (1) for fixing the door (2) to the housing (1).

2. The pressure swing adsorption device based on a composite bed according to claim 1, characterized in that: The adsorption assembly includes a drawer seat (12) inserted inside the composite bed (9), and two stainless steel woven meshes (17) are provided inside the drawer seat (12), with an adsorbent (18) for adsorbing and reacting air between the two stainless steel woven meshes (17).

3. The pressure swing adsorption device based on a composite bed according to claim 2, characterized in that: Telescopic rods (16) are fixedly connected to the four corners of the top side inside the composite bed (9). The bottom ends of the four telescopic rods (16) are fixedly connected to elastic pressure plates (13). The bottom side of the elastic pressure plates (13) abuts against the top side of the stainless steel woven mesh (17) on the top side. The top side of the elastic pressure plates (13) is fixedly connected to a pull rod (14), which passes through the top side of the composite bed (9).

4. The pressure swing adsorption device based on a composite bed according to claim 3, characterized in that: The outer wall of the telescopic rod (16) is fitted with a spring (15). The top end of the spring (15) is connected to the bottom side inside the composite bed (9), and the bottom end of the spring (15) is connected to the top side of the elastic pressure plate (13). Both the elastic pressure plate (13) and the composite bed (9) have ventilation holes for gas flow.

5. The pressure swing adsorption device based on a composite bed according to claim 1, characterized in that: The fixing component includes two circular grooves opened on the top front side of the box body (1). A rod (4) is slidably connected inside the circular groove. The bottom end of the rod (4) is inserted into the top side of the box door (2). A ring (5) is rotatably connected to the top end of the rod (4). The ring (5) is fitted inside the circular groove.

6. The pressure swing adsorption device based on a composite bed according to claim 5, characterized in that: A positioning rod (6) is fixedly connected to the outer wall of the ring (5). A positioning groove is provided on one side of the circular groove. The positioning rod (6) abuts against the inside of the positioning groove. A pull ring (7) is fixedly connected to one side of the positioning rod (6).

7. The pressure swing adsorption device based on a composite bed according to claim 1, characterized in that: The bottom side of the box (1) is fixedly connected to a gas supply pipe (8) for inputting gas into the box (1), and the top side of the box (1) is fixedly connected to an exhaust pipe (3) for outputting gas out of the box (1).

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