Pressure swing adsorption device for helium separation and extraction

Abstract

The utility model relates to the technical field of pressure swing adsorption, and discloses a pressure swing adsorption device for helium separation and extraction, which comprises a bottom plate, a dehumidification mechanism is arranged at the top of the bottom plate, a collection mechanism is arranged at the top of the bottom plate, the dehumidification mechanism comprises a mounting assembly and a jacking assembly, and the jacking assembly is arranged in the mounting assembly. The drying agent box is ejected out of the dehumidification box, the drying agent in the dehumidification box is replaced, hands do not need to be manually prevented from entering the dehumidification box, water on the hands of a worker is prevented from being absorbed by the drying agent, and after a cover plate is covered, the drying agent box can be conveniently separated and extracted. Water in the air is prevented from being absorbed by a drying agent, gas is adsorbed through a molecular film, helium in the gas is purified, the gas is fed into a collecting box to be collected, the molecular film is drawn out of the separating box body, and the molecular film is replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure swing adsorption, in particular to a pressure swing adsorption device for helium separation and extraction. Background Art

[0002] Helium is a colorless, odorless inert gas. It is very important in aerospace, national defense, low-temperature superconductivity research, semiconductor production, nuclear magnetic resonance imaging, special metal smelting and gas leak detection. Pressure swing adsorption utilizes the differences in the adsorbent's adsorption amount, adsorption speed, adsorption driving force for different gas molecules and the property that the adsorption capacity of the adsorbent changes with pressure.

[0003] During use, an existing pressure swing adsorption device for helium separation and extraction separates air containing helium through a set gas membrane. However, in actual use, natural gas contains more water, which affects the molecular membrane's helium purification effect when passing through the molecular membrane. Therefore, it is necessary to improve a pressure swing adsorption device for helium separation and extraction to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to provide a pressure swing adsorption device for separating and extracting helium to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A pressure swing adsorption device for helium separation and extraction, comprising a bottom plate, a dehumidification mechanism is arranged on the top of the bottom plate, and a collection mechanism is arranged on the top of the bottom plate;

[0006] The dehumidification mechanism comprises a mounting assembly and a lifting assembly, and the lifting assembly is arranged inside the mounting assembly.

[0007] Preferably, the mounting assembly includes a first air compressor, the first air compressor is fixedly mounted on the top of the base plate, a connecting pipe is fixedly mounted on the right side of the first air compressor, a dehumidification box is fixedly mounted on the top of the base plate, a buffer tank is fixedly mounted on the top of the base plate, a second air compressor is arranged on the right side of the buffer tank, a cover plate is arranged on the top of the dehumidification box, a fixed frame is fixedly mounted on the top of the cover plate, a spring 1 is fixedly mounted inside the fixed frame, a telescopic rod is fixedly mounted inside the fixed frame, a slider is slidably mounted inside the fixed frame, a shift block is fixedly mounted on the top of the slider, the moisture inside the gas is dried, the adverse effects of excessive moisture in the gas on helium separation and extraction are avoided, the water in the air is prevented from being absorbed by the desiccant, and the efficiency of the desiccant in absorbing moisture is increased.

[0008] Preferably, the end of the connecting pipe away from the first air compressor is fixedly installed on the dehumidification box, the dehumidification box and the buffer tank are fixedly installed via a ventilation pipe, the end of the telescopic rod and the spring away from the fixed frame is fixedly installed on the slider, and the dehumidification box and the slider are provided with sockets at corresponding positions, and the slider is inserted into the sockets to facilitate the removal of the cover.

[0009] Preferably, the lifting assembly includes a fixed plate, which is fixedly installed inside the dehumidification box, a bevel gear 1 is rotatably installed on the bottom of the fixed plate, a rotating rod is rotatably installed inside the dehumidification box, a bevel gear 2 is fixedly installed on the outside of the rotating rod, a motor is fixedly installed on the top of the bottom plate, a threaded rod is fixedly installed on the top of the bevel gear 1, a round tube is threadedly installed on the outside of the threaded rod, a lifting plate is fixedly installed on the top of the round tube, a desiccant box is arranged on the top of the lifting plate, the desiccant box is pushed out of the dehumidification box, and the desiccant inside is replaced, without manually preventing hands from entering the dehumidification box to prevent water on the hands of the staff from being absorbed by the desiccant.

[0010] Preferably, the motor output end is fixedly mounted on the rotating rod, the bevel gear 1 is meshed with the bevel gear 2, and the lifting plate is slidably mounted on the inner side of the dehumidification box to move the desiccant box out of the dehumidification box.

[0011] Preferably, the collecting mechanism comprises a separation box, the separation box is fixedly mounted on the top of the bottom plate, a molecular membrane is arranged inside the separation box, a clamping block 2 is fixedly mounted on the back of the molecular membrane, a clamping box is fixedly mounted on the back of the separation box, a spring 2 is fixedly mounted inside the clamping box, a clamping block 1 is fixedly mounted on the end of the spring 2 away from the clamping box, a connecting rod is fixedly mounted on the end of the clamping block 1 close to the spring 2, a pull ring is fixedly mounted on the right side of the connecting rod, and a collecting box is fixedly mounted on the top of the bottom plate, so that the gas passes through the molecular membrane for adsorption operation, so that the helium in the gas is purified and sent into the collecting box for collection operation.

[0012] Preferably, a through hole is opened at the corresponding position of the snap-in box and the connecting rod, and the connecting rod passes through the through hole and is fixedly installed with the pull ring, a second air compressor is fixedly installed on the top of the separation box body, the left side of the second air compressor is fixedly installed with the buffer tank through the air inlet pipe, and the right side of the second air compressor is fixedly installed with the separation box body through the exhaust pipe, and the separation box body and the collecting box are fixedly installed through the air outlet pipe, so that the molecular membrane can be easily replaced.

[0013] Compared with the prior art, the utility model provides a pressure swing adsorption device for helium separation and extraction, which has the following beneficial effects:

[0014] 1. The pressure swing adsorption device for helium separation and extraction dries the moisture inside the gas during use through the dehumidification mechanism, thereby avoiding the adverse effect of excessive moisture in the gas on the helium separation and extraction. The desiccant box is pushed out of the dehumidification box to replace the desiccant inside. There is no need to manually prevent hands from entering the dehumidification box to prevent water on the hands of the staff from being absorbed by the desiccant. After the cover is closed, water in the air is prevented from being absorbed by the desiccant, thereby increasing the efficiency of the desiccant in absorbing moisture.

[0015] 2. The pressure swing adsorption device for helium separation and extraction, through the collection mechanism set up, allows the gas to pass through the molecular membrane for adsorption operation during use, so that the helium in the gas is purified and sent to the collection box for collection operation. The molecular membrane is pulled out of the separation box and replaced. The molecular membrane can be replaced and installed by only pulling the pull ring, which saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0017] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the appearance and structure of the dehumidification mechanism of the utility model;

[0019] Figure 3 For this utility model Figure 2 A schematic diagram of the structure enlargement in the middle;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the jacking assembly of the utility model;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the collection mechanism of the utility model;

[0022] Figure 6 For this utility model Figure 5 Enlarged schematic diagram of the structure at point B in the middle.

[0023] In the figure: 1. bottom plate; 2. dehumidification mechanism; 21. installation assembly; 211. first air compressor; 212. connecting pipe; 213. dehumidification box; 214. cover plate; 215. buffer tank; 216. second air compressor; 217. fixed frame; 218. spring one; 219. telescopic rod; 2110. slider; 2111. shift block; 22. lifting assembly; 221. fixed plate; 222. bevel gear one; 223. rotating rod; 224. bevel gear two; 225. motor; 226. threaded rod; 227. round tube; 228. desiccant box; 229. lifting plate; 3. collection mechanism; 31. separation box; 32. molecular membrane; 33. snap-in box; 34. spring two; 35. snap-in block one; 36. connecting rod; 37. pull ring; 38. snap-in block two; 39. collection box. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Example 1: Please refer to Figure 1-4 , the utility model provides a technical solution: a pressure swing adsorption device for helium separation and extraction, comprising a bottom plate 1, a dehumidification mechanism 2 is arranged on the top of the bottom plate 1, and a collection mechanism 3 is arranged on the top of the bottom plate 1;

[0027] The dehumidification mechanism 2 includes a mounting assembly 21 and a lifting assembly 22 , and the lifting assembly 22 is arranged inside the mounting assembly 21 .

[0028] Furthermore, the installation component 21 includes a first air compressor 211, which is fixedly installed on the top of the base plate 1, a connecting pipe 212 is fixedly installed on the right side of the first air compressor 211, a dehumidification box 213 is fixedly installed on the top of the base plate 1, a buffer tank 215 is fixedly installed on the top of the base plate 1, a second air compressor 216 is arranged on the right side of the buffer tank 215, a cover plate 214 is arranged on the top of the dehumidification box 213, a fixed frame 217 is fixedly installed on the top of the cover plate 214, a spring 218 is fixedly installed inside the fixed frame 217, a telescopic rod 219 is fixedly installed inside the fixed frame 217, a slider 2110 is slidably installed inside the fixed frame 217, and a shift block 2111 is fixedly installed on the top of the slider 2110 to dry the moisture inside the gas, avoid the adverse effects of excessive moisture in the gas on helium separation and extraction, prevent water in the air from being absorbed by the desiccant, and increase the efficiency of the desiccant in absorbing moisture.

[0029] Furthermore, one end of the connecting pipe 212 away from the first air compressor 211 is fixedly installed on the dehumidification box 213, and the dehumidification box 213 and the buffer tank 215 are fixedly installed via a ventilation pipe. The telescopic rod 219 and the spring 218 are fixedly installed on the slider 2110 at one end away from the fixed frame 217. Sockets are provided at corresponding positions of the dehumidification box 213 and the slider 2110, and the slider 2110 is inserted into the socket to facilitate disassembly of the cover 214.

[0030] Furthermore, the lifting assembly 22 includes a fixed plate 221, which is fixedly installed inside the dehumidification box 213. A bevel gear 222 is rotatably installed at the bottom of the fixed plate 221. A rotating rod 223 is rotatably installed inside the dehumidification box 213. A bevel gear 224 is fixedly installed on the outside of the rotating rod 223. A motor 225 is fixedly installed on the top of the bottom plate 1. A threaded rod 226 is fixedly installed on the top of the bevel gear 222. A round tube 227 is threadedly installed on the outside of the threaded rod 226. A lifting plate 229 is fixedly installed on the top of the round tube 227. A desiccant box 228 is arranged on the top of the lifting plate 229. The desiccant box 228 is pushed out of the dehumidification box 213 to replace the desiccant inside. There is no need to manually prevent hands from entering the dehumidification box 213 to prevent water on the hands of the staff from being absorbed by the desiccant.

[0031] Furthermore, the output end of the motor 225 is fixedly installed with the rotating rod 223, the bevel gear 1 222 is meshed with the bevel gear 2 224, and the lifting plate 229 is slidably installed on the inner side of the dehumidification box 213, so that the desiccant box 228 is moved out of the dehumidification box 213.

[0032] Example 2: Please refer to Figure 5-6, and combined with Example 1, it is further obtained that the collecting mechanism 3 includes a separation box 31, the separation box 31 is fixedly installed on the top of the bottom plate 1, a molecular membrane 32 is arranged inside the separation box 31, a clamping block 38 is fixedly installed on the back of the molecular membrane 32, a clamping box 33 is fixedly installed on the back of the separation box 31, a spring 34 is fixedly installed inside the clamping box 33, a clamping block 35 is fixedly installed on the end of the spring 34 away from the clamping box 33, a connecting rod 36 is fixedly installed on the end of the clamping block 35 close to the spring 34, a pull ring 37 is fixedly installed on the right side of the connecting rod 36, and a collecting box 39 is fixedly installed on the top of the bottom plate 1, so that the gas passes through the molecular membrane 32 for adsorption operation, so that the helium in the gas is purified and sent into the collecting box 39 for collection operation.

[0033] Furthermore, through holes are opened at corresponding positions of the snap-in box 33 and the connecting rod 36, and the connecting rod 36 is fixedly installed through the through hole and the pull ring 37, and a second air compressor 216 is fixedly installed on the top of the separation box body 31, and the left side of the second air compressor 216 is fixedly installed with the buffer tank 215 through the air inlet pipe, and the right side of the second air compressor 216 is fixedly installed with the separation box body 31 through the exhaust pipe, and the separation box body 31 and the collecting box 39 are fixedly installed through the air outlet pipe, so that the molecular membrane 32 is easy to replace.

[0034] During actual operation, when the device is used, the gas to be separated and extracted is sucked in through the first air compressor 211, and sent to the dehumidification box 213 through the connecting pipe 212 for dehumidification operation, and the moisture inside the gas is dried to avoid the adverse effect of excessive moisture in the gas on the separation and extraction of helium. After drying, it is sent to the buffer tank 215, and the second air compressor 216 is started to send the dehumidified gas in the buffer tank 215 into the separation box body 31, and pressurization operation is performed to make the gas pass through the molecular membrane 32 for adsorption operation, so that the helium in the gas is purified and sent to the collection box 39 for collection operation. After collection, the shift block 2111 is pulled inward, and the shift block 2111 drives the slider 2110 to slide inside the fixed frame 217, so that the slider 2110 is free from the restriction of the socket, thereby taking out the cover plate 214, and starting the motor 225. The output end of the motor 225 drives the rotating rod 223 to rotate, and the rotation of the rotating rod 223 drives the bevel gear 224 to rotate The bevel gear 224 rotates to drive the bevel gear 1 222 meshing therewith to rotate, the bevel gear 1 222 rotates to rotate the threaded rod 226, the threaded rod 226 rotates to move the round tube 227 threadedly mounted therewith, and then the lifting plate 229 slides inside the dehumidification box 213, and the desiccant box 228 is pushed out of the dehumidification box 213, and the desiccant inside is replaced, and there is no need to manually prevent hands from entering the dehumidification box 213 to prevent water on the hands of the staff from being absorbed by the desiccant, and the cover After the upper cover plate 214 is put on, water in the air is prevented from being absorbed by the desiccant, and the efficiency of the desiccant in absorbing moisture is increased. The pull ring 37 is pulled outward, and the pull ring 37 pulls the connecting rod 36 to drive the clamping block 1 35 to move. The clamping block 1 35 moves to make the clamping block 2 38 disengage from the clamping position of the clamping block 1 35, and then the molecular membrane 32 is pulled out of the separation box 31, and the molecular membrane 32 is replaced. The molecular membrane 32 can be replaced and installed by only pulling the pull ring 37, which saves time and effort.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A pressure swing adsorption device for helium separation and extraction, comprising a bottom plate (1), characterized in that: A dehumidification mechanism (2) is arranged on the top of the bottom plate (1), and a collection mechanism (3) is arranged on the top of the bottom plate (1); The dehumidification mechanism (2) comprises a mounting assembly (21) and a lifting assembly (22), wherein the lifting assembly (22) is arranged inside the mounting assembly (21); The mounting assembly (21) comprises a first air compressor (211), the first air compressor (211) being fixedly mounted on the top of the base plate (1), a connecting pipe (212) being fixedly mounted on the right side of the first air compressor (211), a dehumidification box (213) being fixedly mounted on the top of the base plate (1), a buffer tank (215) being fixedly mounted on the top of the base plate (1), a second air compressor (216) being arranged on the right side of the buffer tank (215), a cover plate (214) being arranged on the top of the dehumidification box (213), a fixing frame (217) being fixedly mounted on the top of the cover plate (214), a spring 1 (218) being fixedly mounted inside the fixing frame (217), a telescopic rod (219) being fixedly mounted inside the fixing frame (217), a sliding block (2110) being slidably mounted inside the fixing frame (217), and a shifting block (2111) being fixedly mounted on the top of the sliding block (2110).

2. A pressure swing adsorption device for helium separation and extraction according to claim 1, characterized in that: One end of the connecting pipe (212) away from the first air compressor (211) is fixedly mounted to the dehumidification box (213); the dehumidification box (213) and the buffer tank (215) are fixedly mounted via a ventilation pipe; one end of the telescopic rod (219) and the spring one (218) away from the fixed frame (217) is fixedly mounted to the slider (2110); a socket is provided at corresponding positions of the dehumidification box (213) and the slider (2110), and the slider (2110) is plugged into the socket.

3. A pressure swing adsorption device for helium separation and extraction according to claim 1, characterized in that: The lifting assembly (22) comprises a fixed plate (221), the fixed plate (221) being fixedly mounted inside the dehumidification box (213), a bevel gear 1 (222) being rotatably mounted on the bottom of the fixed plate (221), a rotating rod (223) being rotatably mounted inside the dehumidification box (213), a bevel gear 2 (224) being fixedly mounted on the outer side of the rotating rod (223), a motor (225) being fixedly mounted on the top of the bottom plate (1), a threaded rod (226) being fixedly mounted on the top of the bevel gear 1 (222), a round tube (227) being threadedly mounted on the outer side of the threaded rod (226), a lifting plate (229) being fixedly mounted on the top of the round tube (227), and a desiccant box (228) being arranged on the top of the lifting plate (229).

4. A pressure swing adsorption device for helium separation and extraction according to claim 3, characterized in that: The output end of the motor (225) is fixedly mounted on the rotating rod (223), the bevel gear 1 (222) is meshed with the bevel gear 2 (224), and the lifting plate (229) is slidably mounted on the inner side of the dehumidification box (213).

5. A pressure swing adsorption device for helium separation and extraction according to claim 1, characterized in that: The collecting mechanism (3) comprises a separation box (31), the separation box (31) being fixedly mounted on the top of the bottom plate (1), a molecular membrane (32) being arranged inside the separation box (31), a second clamping block (38) being fixedly mounted on the back of the molecular membrane (32), a clamping box (33) being fixedly mounted on the back of the separation box (31), a second spring (34) being fixedly mounted inside the clamping box (33), a first clamping block (35) being fixedly mounted on the end of the second spring (34) away from the clamping box (33), a connecting rod (36) being fixedly mounted on the end of the first clamping block (35) close to the second spring (34), a pull ring (37) being fixedly mounted on the right side of the connecting rod (36), and a collecting box (39) being fixedly mounted on the top of the bottom plate (1).

6. A pressure swing adsorption device for helium separation and extraction according to claim 5, characterized in that: Through holes are provided at positions corresponding to the snap-in box (33) and the connecting rod (36), and the connecting rod (36) passes through the through hole and is fixedly installed with a pull ring (37). A second air compressor (216) is fixedly installed on the top of the separation box (31). The left side of the second air compressor (216) is fixedly installed with a buffer tank (215) via an air inlet pipe, and the right side of the second air compressor (216) is fixedly installed with the separation box (31) via an exhaust pipe. The separation box (31) and the collection box (39) are fixedly installed via an air outlet pipe.

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