A multi-chamber parallel adsorption device for competitive adsorption

Abstract

This invention discloses a multi-chamber parallel adsorption device for competitive adsorption, comprising an adsorption box with multiple adsorption chambers arranged vertically side-by-side inside, the chambers being non-interconnected; a placement assembly, consisting of multiple sets corresponding to the adsorption chambers, detachably mounted within the chambers, for supporting and placing solid shale samples; and a mixed gas supply assembly, including a main inlet pipe with its inlet end connected to an external mixed gas storage device and its outlet end connected to multiple branch inlet pipes, each corresponding to and connected to one of the adsorption chambers, for supplying mixed gas into the chambers; valves are installed on the main inlet pipe and the branch inlet pipes. This invention allows for simultaneous performance of multiple adsorption experiments, improving adsorption efficiency and facilitating the removal or replacement of solid shale samples.

Description

Technical Field

[0001] This utility model relates to the field of adsorption instrument and equipment technology, and in particular to a multi-chamber parallel adsorption device for competitive adsorption. Background Technology

[0002] Shale gas, coalbed methane, and other unconventional natural gas are valued by many countries for their abundant reserves, cleanliness, and low pollution. Currently, in order to better exploit shale gas, it is of great significance to study the adsorption of multi-component gases by shale.

[0003] Chinese patent (CN206057127U) discloses a high-pressure gas competitive adsorption and analysis experimental device, specifically including a reference gas injection unit, a test gas injection unit, a gas mixing unit, an adsorption-desorption unit, a constant temperature control unit, a vacuum processing unit, and a data measurement and acquisition unit. The adsorption-desorption unit includes a reference vessel, an adsorption vessel micro-gas chamber, and a micro-gas chamber. Both the reference vessel and the adsorption vessel are equipped with temperature and pressure sensors. The data measurement and acquisition unit includes a gas chromatograph, a computer, and a data communication acquisition card. The gas chromatograph is connected to the micro-gas chamber, and the data communication acquisition card is electrically connected to the temperature and pressure sensors on the reference vessel, the temperature and pressure sensors on the adsorption vessel, and the gas chromatograph. The computer is electrically connected to the data communication acquisition card. This device can determine the total adsorption capacity of multi-component gases and the adsorption capacity of each component in solid samples such as shale and coal under high pressure, with accurate and reliable test results. However, the adsorption vessel in this device still has the following problems in practical use: (1) When conducting the experiment, the solid shale is first placed into the adsorption vessel, and then the mixed gas is filled into the adsorption vessel to ensure that the mixed gas is fully competitively adsorbed in the adsorption vessel. However, the adsorption vessel has only a single chamber, and only one competitive adsorption experiment can be conducted at a time. It cannot conduct multiple sets of experiments at the same time, resulting in low efficiency and long time consumption in the experimental process. (2) The discharge port of the adsorption vessel in the experimental apparatus is located at the top. Before the experiment, the operator puts the solid shale into the adsorption vessel through the discharge port. After the experiment, the operator needs to take out the solid shale. However, the discharge port is generally small and it is not convenient to take out or replace the shale. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a multi-chamber parallel adsorption device for competitive adsorption, which can perform multiple sets of adsorption experiments simultaneously, improve the efficiency of adsorption experiments, and facilitate the removal or replacement of solid shale samples.

[0005] This utility model provides a multi-chamber parallel adsorption device for competitive adsorption, comprising: An adsorption box, wherein multiple adsorption chambers are arranged side by side inside the adsorption box, and the multiple adsorption chambers are not interconnected. The placement component is provided in multiple sets, corresponding one-to-one with the multiple sets of adsorption chambers, and is detachably installed in the adsorption chambers for supporting and placing solid shale samples; A mixed gas supply assembly includes a main inlet pipe, the inlet end of which is connected to an external mixed gas storage device, and the outlet end of which is connected to multiple branch inlet pipes. The multiple branch inlet pipes correspond one-to-one with and are connected to multiple sets of adsorption chambers, and are used to deliver mixed gas into the adsorption chambers. Valves are provided on the main air intake pipe and the multiple branch air intake pipes.

[0006] Furthermore, multiple openings are arranged side by side on one outer wall of the adsorption box, and each of the multiple openings corresponds to and communicates with a multiple of the adsorption chambers, for placing the placement component into the corresponding adsorption chamber.

[0007] Furthermore, the placement assembly includes a cover plate that matches the opening, a placement plate is fixedly disposed on the side of the cover plate near the adsorption chamber, a sample container is detachably disposed on the top of the placement plate, and a fixing member is disposed on the other side of the cover plate for detachably connecting the cover plate to the adsorption chamber.

[0008] Furthermore, the placement plate is L-shaped, including a vertical part and a horizontal part. The vertical part is fixedly connected to the cover plate, and a square insert is fixedly provided at the top of the horizontal part along the vertical direction. The top of the sample container is an open structure and is threaded with a top cover. The bottom of the sample container has a square slot that is recessed inward and matches the square insert. The placement plate has several through holes on its horizontal part. The outer wall of the sample container is further provided with multiple sets of strip support blocks fixedly arranged at the bottom of the adsorption chamber along the first horizontal direction. The top of the strip support blocks is provided with a sliding groove. The placement plate is located above the strip support blocks, and multiple sets of strip slide plates are fixedly arranged at the bottom of its horizontal part. The strip slide plates correspond one-to-one with the sliding grooves and are slidably connected. The length direction of the horizontal portion is the first horizontal direction.

[0009] Furthermore, the fixing component includes a mounting box fixedly mounted on the cover plate and two sets of fixing blocks symmetrically arranged on the outer wall of the adsorption box about the mounting box. The mounting box has a bidirectional threaded rod rotatably mounted inside in the horizontal direction. A rotating component is fixedly mounted in the middle of the bidirectional threaded rod. Moving plates are threaded onto both ends of the bidirectional threaded rod. A fixing rod is fixedly mounted on the side of the moving plate away from the rotating component. The fixing rod slides through the side wall of the mounting box. A fixing groove matching the fixing rod is opened on the side of the fixing block near the fixing rod. Rotating the rotating component can drive the two sets of moving plates away from each other and cause the fixing rod to be inserted into the corresponding fixing groove for fixation.

[0010] Furthermore, the mounting box has an clearance hole on the side away from the cover plate, and the rotating component includes a rotating ring fixedly sleeved on the outside of the bidirectional threaded rod. Multiple actuating blocks are fixedly arranged on the outer surface of the rotating ring along its circumference, and the actuating blocks can extend through the clearance hole to the outside of the mounting box.

[0011] Furthermore, a positioning ring is fixedly provided circumferentially inside the opening of the adsorption box, and a rectangular groove is provided on the side of the cover plate near the placement plate. A sealing ring is fixedly provided in the rectangular groove, and the end face of the sealing ring away from the cover plate abuts against the positioning ring.

[0012] Compared with the prior art, the beneficial effects of this utility model are: (1) The adsorption box of this utility model is provided with multiple adsorption chambers. Each adsorption chamber is provided with a placement component for placing solid shale samples. Each adsorption chamber is connected to a branch inlet pipe. Multiple branch inlet pipes are connected to the main inlet pipe, so that multiple adsorption chambers are connected in parallel. During the experiment, the valves on the main inlet pipe and the corresponding branch inlet pipe are opened to allow the mixed gas to enter the corresponding adsorption chamber for competitive adsorption experiments, so that multiple sets of experiments can be carried out in the adsorption box at the same time, thereby improving the experimental efficiency. (2) The placement component of this utility model includes a cover plate, a placement plate is provided on one side of the cover plate, and a sample container is detachably provided on the top of the placement plate. The sample container is used to place solid shale samples. A fixing member is provided on the other side of the cover plate. The fixing member can detachably connect the cover plate to the outer wall of the adsorption chamber. This application facilitates the removal of the placement plate after the experiment, thereby moving the sample container to the outside of the adsorption chamber for disassembly. Compared with the smaller opening at the top of the original adsorption tank, this application makes the removal of shale samples more convenient. In addition, the sample container of this application can also be detachably connected to the top of the placement plate. After the experiment, the sample container containing the solid shale sample can be directly removed without removing the solid shale samples one by one. The operation is more convenient and simple.

[0013] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0014] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a front structural diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a side view of a single adsorption chamber. Figure 4 A top view showing where the components are placed; Figure 5 This is a partial view of the front of the adsorption box; Figure 6 This is a structural diagram of the cover plate and fasteners; The diagram shows: 1. Adsorption box; 2. Placement assembly; 3. Mixed gas supply assembly; 4. Temperature sensor; 5. Pressure sensor; 6. Gas delivery pipe. 11. Adsorption chamber; 12. Strip support block; 21. Cover plate; 22. Placement plate; 23. Sample container; 24. Fixing component; 25. Square insert rod; 26. Strip slide plate; 31. Main intake pipe; 32. Branch intake pipe; 211. Sealing ring; 221. Through hole one; 231. Top cover; 241. Mounting box; 242. Fixing block; 243. Two-way threaded rod; 244. Moving plate; 245. Fixing rod; 246. Rotating ring; 247. Slide rod; 2411. Clearance hole. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0016] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0017] Please refer to Figures 1-6 An embodiment of this utility model provides a multi-chamber parallel adsorption device for competitive adsorption, comprising: The adsorption box 1 has multiple adsorption chambers 11 arranged side by side inside the adsorption box 1, and the multiple adsorption chambers 11 are not interconnected. The placement component 2 is provided in multiple sets corresponding to the multiple sets of adsorption chambers 11. It is detachably installed in the adsorption chambers 11 and is used to support and place solid shale samples. The mixed gas supply assembly 3 includes a main inlet pipe 31. The inlet end of the main inlet pipe 31 is connected to an external mixed gas storage device, and the outlet end is connected to multiple sets of branch inlet pipes 32. The multiple sets of branch inlet pipes 32 correspond one-to-one with and are connected to multiple sets of adsorption chambers 11, and are used to deliver mixed gas into the adsorption chambers 11. Valves are installed on the main air intake pipe 31 and the multiple branch air intake pipes 32.

[0018] In this embodiment, two parallel partitions are fixedly installed on the inner wall of the adsorption box 1. The two partitions divide the interior of the adsorption box 1 into three adsorption chambers 11: upper, middle and lower. A sealing device is provided between the partitions and the inner wall of the adsorption box 1 so that the three adsorption chambers 11 are not connected to each other, thus preventing the gas in the three adsorption chambers 11 from flowing to each other. The inlet end of the main inlet pipe 31 is connected to the external mixed gas storage device, and the outlet pipe is connected to three branch inlet pipes 32 respectively. One branch inlet pipe 32 is connected to an adsorption chamber 11. Before the experiment, the solid shale sample is placed on the placement component 2 and the placement component 2 is pushed into the corresponding adsorption chamber 11 and fixed. At the start of the experiment, the valves on the main inlet pipe 31 and the corresponding branch inlet pipes 32 are opened to allow the treated mixed gas to enter the corresponding adsorption chamber 11 for competitive adsorption experiments. The experiment needs to be conducted at a certain temperature and pressure. The adsorption chamber 1 is wrapped with a heating water pipe or electric heating wire (not shown in the figure) to heat the adsorption chamber 1 by water bath or electric heating, or the adsorption chamber 1 is directly placed in a constant temperature chamber to maintain the required temperature in the adsorption chamber 11. The adsorption chamber 11 is equipped with a temperature sensor 4 and a pressure sensor 5. The temperature sensor 4 is used to detect the temperature in the adsorption chamber 11, and the pressure sensor 5 is used to detect the gas pressure in the adsorption chamber 11. When the mixed gas is introduced, when the gas pressure in the adsorption chamber 11 reaches the required gas pressure for the experiment, the corresponding valves are closed, allowing multiple gases to conduct competitive adsorption experiments in the adsorption chamber 11 for several hours. Each adsorption chamber 11 is also connected to a separate gas guide tube 6, which is connected to the experimental analysis device. After the experiment, the valve on the gas guide tube 6 is opened to allow the gas in the adsorption chamber 11 to flow into the experimental analysis device for component ratio analysis. This application sets up multiple parallel adsorption chambers, allowing mixed gases to simultaneously enter the corresponding adsorption chambers for competitive adsorption experiments. This enables multiple sets of experiments to be conducted simultaneously within the adsorption chamber, thereby improving experimental efficiency.

[0019] It should be noted that the external mixed gas storage device adopts the structure mentioned in Chinese patent CN206057127U, including the gas cylinder to be tested, the reference gas cylinder, the pre-pressurization chamber, and the reference vessel, with the reference vessel connected to the main gas inlet pipe 31.

[0020] In a preferred embodiment, such as Figure 3 As shown, multiple openings are arranged side by side on one side of the outer wall of the adsorption box 1. Each opening corresponds to and is connected to a multiple adsorption chamber 11, which are used to place the placement component 2 into the corresponding adsorption chamber 11.

[0021] In this embodiment, three rectangular openings are provided on one outer wall of the adsorption tank 1. The placement component 2 is inserted into the corresponding adsorption chamber 11 through the rectangular openings, or taken out from the adsorption chamber 11 through the rectangular openings. Compared with the smaller opening at the top of the original adsorption tank, this facilitates the placement and removal of solid shale samples.

[0022] In a preferred embodiment, such as Figure 3 As shown, the placement assembly 2 includes a cover plate 21 that matches the opening. A placement plate 22 is fixedly installed on the side of the cover plate 21 near the adsorption chamber 11. A sample container 23 is detachably installed on the top of the placement plate 22. A fastener 24 is installed on the other side of the cover plate 21 to allow the cover plate 21 to be detachably connected to the adsorption box 1.

[0023] In this embodiment, the opening is a rectangular opening, and the width of the placement plate 22 is smaller than the width of the opening, so that it can enter the adsorption chamber 11 through the opening; After the experiment, the placement plate 22 can be removed by pulling out the cover plate 21, which in turn moves the sample container 23 to the outside of the adsorption chamber 11 for disassembly. Compared with the smaller opening at the top of the original adsorption container, the removal of shale samples in this application is more convenient. In addition, the sample container 23 and the top of the placement plate 22 are also detachably connected. After the experiment, the sample container 23 containing the solid shale sample can be directly removed without removing the solid shale sample one by one, making the operation more convenient and simple. Before the next experiment, the sample container 23 containing the solid shale sample can be placed on the placement plate 22 and fixed, which facilitates the replacement of the sample.

[0024] In a preferred embodiment, such as Figure 3 and Figure 4 As shown, the placement plate 22 is L-shaped, including a vertical part and a horizontal part. The vertical part is fixedly connected to the cover plate, and a square insert rod 25 is fixedly installed at the top of the horizontal part along the vertical direction. The top of the sample container 23 is an open structure and is threadedly connected to a top cover 231. The bottom of the sample container 23 has a square slot recessed inward, which matches the square insert 25.

[0025] In this embodiment, the inner ring of the top cover 231 is provided with an internal thread, and the top outer wall of the sample container 23 is provided with an external thread. After the solid shale sample is placed into the sample container 23, the top cover 231 is tightened to prevent the solid shale sample from overflowing from the top opening of the sample container 23. Preferably, the horizontal portion of the placement plate 22 has several through holes 221, and the outer wall and top cover 231 of the sample container 23 have several through holes 221. Specifically, the function of the through holes 221 is to facilitate the full flow of gas in the adsorption chamber 11. The two-dimensional micro-gas (not shown in the figure) can enter the sample container 23 through the through holes 221 to conduct competitive adsorption experiments, and the solid shale sample in the sample container 23 will not leak out from the through holes 221.

[0026] In a preferred embodiment, such as Figure 2 and Figure 3 As shown, multiple sets of strip support blocks 12 are fixedly arranged at the bottom of the adsorption chamber 11 along the first horizontal direction. The top of the strip support block 12 is provided with a sliding groove. The placement plate 22 is located above the strip support block 12, and multiple sets of strip slide plates 25 are fixedly arranged at the bottom of its horizontal part. The strip slide plates 25 correspond one-to-one with the sliding groove and are slidably connected. The length direction of the horizontal part is the first horizontal direction.

[0027] In this embodiment, the placement plate 22 is pulled out horizontally, and the direction of movement when it is pushed into or pulled out of the adsorption chamber 11 is the first horizontal direction, such as... Figure 3 As shown by the middle arrow A, the horizontal part of the placement plate 22 is set along the first horizontal direction, and the bottom of the horizontal part is fixedly provided with a multi-degree strip slide plate 25 along its length direction. The strip slide plate 25 corresponds one-to-one with the strip support block 12 fixed on the bottom of the adsorption chamber 11. When the placement plate 22 is pushed into the adsorption chamber 11, the strip-shaped sliding plate 25 at the bottom of the placement plate 22 is slidably connected to the groove opened at the top of the strip-shaped support block 12. The strip-shaped support block 12 plays a guiding and supporting role for the placement plate 22, making it easy to push the placement plate 22 stably into the adsorption chamber 11.

[0028] In a preferred embodiment, such as Figure 5 and Figure 6As shown, the fixing component 24 includes a mounting box 241 fixedly mounted on the cover plate 21, and two sets of fixing blocks 242 symmetrically arranged on the outer wall of the adsorption box 1 about the mounting box 241. A bidirectional threaded rod 243 is rotatably mounted inside the mounting box 241 in the horizontal direction. A rotating component is fixedly mounted in the middle of the bidirectional threaded rod 243. Moving plates 244 are threadedly fitted at both ends of the bidirectional threaded rod 243. A fixing rod 245 is fixedly mounted on the side of the moving plate 244 away from the rotating component. The fixing rod 245 slides through the side wall of the mounting box 241. A fixing groove matching the fixing rod 245 is opened on the side of the fixing block 242 near the fixing rod 245. Rotating the rotating component can drive the two sets of moving plates 244 away from each other and make the fixing rod 245 inserted into the corresponding fixing groove for fixation.

[0029] Preferred, such as Figure 3 and Figure 4 As shown, the mounting box 241 has a clearance hole 2411 on the side away from the cover plate 21. The rotating component includes a rotating ring 246 fixedly sleeved on the outside of the bidirectional threaded rod 243. Multiple actuating blocks are fixedly arranged on the outer surface of the rotating ring 246 along its circumference. The actuating blocks can extend through the clearance hole 2411 to the outside of the mounting box 241.

[0030] In this embodiment, a clearance hole 2411 is provided on one side of the mounting box 241. A toggle block fixedly installed on the outer surface of the rotating ring 246 extends through the clearance hole 2411 and extends outside the mounting box 241. The operator can touch the toggle block and apply force to rotate the rotating ring 246. When the placement plate 22 is placed into the adsorption chamber, the rotating ring 246 is manually rotated. The rotation of the rotating ring 246 will drive the bidirectional threaded rod 243 fixedly connected to it to rotate synchronously, thereby driving the fixed rods 245 at both ends to move away from each other and insert into the fixed grooves opened on the corresponding fixed blocks 242 for fixation, thus quickly realizing the installation of the placement plate 22 and thus realizing the placement of the solid shale sample.

[0031] It should be noted that two sets of slide rods 247 are also fixedly installed inside the mounting box 241. The two sets of slide rods 247 are arranged parallel to the bidirectional threaded rod 243. The moving plate 244 is slidably connected to the slide rods 247. The slide rods 247 play a limiting role, so that the two sets of moving plates 244 move along the axial direction of the bidirectional threaded rod 243 without rotating, and at the same time improve the stability of the moving plate 244 during the movement.

[0032] In a preferred embodiment, such as Figure 3 and Figure 4 As shown, a positioning ring is fixedly installed in the opening of the adsorption box 1 along its circumference. A rectangular groove is opened on the side of the cover plate 21 near the placement plate 22. A sealing ring 211 is fixedly installed in the rectangular groove. The end face of the sealing ring 211 away from the cover plate 21 abuts against the positioning ring.

[0033] In this embodiment, the cover plate 21 is a rectangular plate structure with a rectangular opening, and the size of the cover plate 21 is slightly smaller than the size of the opening. A rectangular positioning ring is fixedly installed inside the opening of the adsorption chamber 1. The positioning ring is integrally formed with the adsorption chamber 1. The sealing ring 211 is a rectangular sealing ring. After the placement plate 22 enters the adsorption chamber 11, the cover plate 21 is just stuck in the opening. The sealing ring 211 abuts against the positioning ring, realizing the seal between the cover plate 21 and the opening, providing a good sealed experimental environment for subsequent experiments.

[0034] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A multi-chamber parallel adsorption device for competitive adsorption, characterized in that, include: An adsorption box, wherein multiple adsorption chambers are arranged side by side inside the adsorption box, and the multiple adsorption chambers are not interconnected. The placement component is provided in multiple sets, corresponding one-to-one with the multiple sets of adsorption chambers, and is detachably installed in the adsorption chambers for supporting and placing solid shale samples; A mixed gas supply assembly includes a main inlet pipe, the inlet end of which is connected to an external mixed gas storage device, and the outlet end of which is connected to multiple branch inlet pipes. The multiple branch inlet pipes correspond one-to-one with and are connected to multiple sets of adsorption chambers, and are used to deliver mixed gas into the adsorption chambers. Valves are provided on the main air intake pipe and the multiple branch air intake pipes.

2. The multi-chamber parallel adsorption device for competitive adsorption according to claim 1, characterized in that, Multiple openings are arranged side by side on one outer wall of the adsorption box. Each of the multiple openings corresponds to and is connected to a multiple adsorption chamber, allowing the placement component to be placed into the corresponding adsorption chamber.

3. The multi-chamber parallel adsorption device for competitive adsorption according to claim 2, characterized in that, The placement assembly includes a cover plate that matches the opening. A placement plate is fixedly mounted on the side of the cover plate near the adsorption chamber. A sample container is detachably mounted on the top of the placement plate. A fastener is provided on the other side of the cover plate for detachably connecting the cover plate to the adsorption chamber.

4. A multi-chamber parallel adsorption device for competitive adsorption according to claim 3, characterized in that, The placement plate is L-shaped and includes a vertical part and a horizontal part. The vertical part is fixedly connected to the cover plate, and a square insert is fixedly provided at the top of the horizontal part along the vertical direction. The top of the sample container is an open structure and is threaded with a top cover. The bottom of the sample container has a square slot that is recessed inward and matches the square insert. The horizontal part of the placement plate has several through holes, and the outer wall of the sample container and the top cover have several through holes.

5. A multi-chamber parallel adsorption device for competitive adsorption according to claim 4, characterized in that, The bottom of the adsorption chamber is fixedly provided with multiple sets of strip support blocks along the first horizontal direction. The top of the strip support block is provided with a sliding groove. The placement plate is located above the strip support block, and the bottom of its horizontal part is fixedly provided with multiple sets of strip slide plates. The strip slide plates correspond one-to-one with the sliding groove and are slidably connected. The length direction of the horizontal portion is the first horizontal direction.

6. A multi-chamber parallel adsorption device for competitive adsorption according to claim 3, characterized in that, The fixing components include a mounting box fixedly mounted on the cover plate and two sets of fixing blocks symmetrically arranged on the outer wall of the adsorption box about the mounting box. A bidirectional threaded rod is rotatably mounted inside the mounting box in the horizontal direction. A rotating component is fixedly mounted in the middle of the bidirectional threaded rod. Moving plates are threaded onto both ends of the bidirectional threaded rod. A fixing rod is fixedly mounted on the side of the moving plate away from the rotating component. The fixing rod slides through the side wall of the mounting box. A fixing groove matching the fixing rod is opened on the side of the fixing block near the fixing rod. Rotating the rotating component can drive the two sets of moving plates away from each other and cause the fixing rod to be inserted into the corresponding fixing groove for fixation.

7. A multi-chamber parallel adsorption device for competitive adsorption according to claim 6, characterized in that, The mounting box has an clearance hole on the side away from the cover plate. The rotating component includes a rotating ring fixedly sleeved on the outside of the bidirectional threaded rod. Multiple actuating blocks are fixedly arranged on the outer surface of the rotating ring along its circumference. The actuating blocks can extend through the clearance hole to the outside of the mounting box.

8. A multi-chamber parallel adsorption device for competitive adsorption according to claim 3, characterized in that, A positioning ring is fixedly arranged circumferentially inside the opening of the adsorption box. A rectangular groove is opened on the side of the cover plate near the placement plate. A sealing ring is fixedly arranged in the rectangular groove. The end face of the sealing ring away from the cover plate abuts against the positioning ring.

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