Adsorption unit, adsorption structure and VPSA oxygen production equipment

Abstract

The utility model provides an adsorption unit, an adsorption module and VPSA (Vacuum Pressure Swing Adsorption) oxygen production equipment. The adsorption unit comprises a mounting body, a first mounting cover and a second mounting cover. The mounting body is provided with a mounting channel. The first installation cover covers one end of the installation channel, an installation protrusion is arranged on the side, close to the installation body, of the first installation cover, a first communication opening is formed in the outer side wall of the installation protrusion, and a second communication opening is formed in the side, away from the installation body, of the first installation cover. The second mounting cover covers the other end of the mounting channel and is provided with a communicating channel communicating with the mounting channel. The adsorption units are of modular structures small in size, the manufacturing period is short, the occupied area is small, the transportation cost is low, and the number of the adsorption units can be adjusted according to the actual use condition. The adsorption parts in the adsorption units are pressed through the first mounting covers and the second mounting covers in a matched mode, inert ceramic balls do not need to be added to the tops to serve as pressing devices of the adsorption parts, the filling period is short, the filling cost is low, and the filling mode is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen production, in particular to an adsorption unit, an adsorption structure and VPSA oxygen production equipment. Background Art

[0002] The VPSA oxygen production system is mainly composed of a blower, a vacuum pump, a switching valve, an adsorber and an oxygen balance tank. After the raw air is filtered to remove dust particles from the inlet, it is pressurized to 0.4bar-0.6bar by the blower and enters one of the adsorbers. The adsorber is filled with adsorbents and dehydrating agents, among which water, carbon dioxide, and a small amount of other gas components are adsorbed by the high-performance activated alumina and 13X molecular sieves loaded at the bottom of the adsorber, and then nitrogen is adsorbed by the zeolite molecular sieve loaded on the top of the 13X molecular sieve. 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. When the adsorber is adsorbed to a certain extent, the adsorbent therein will reach a saturated state. At this time, the vacuum pump is used to evacuate it through the switching valve (opposite to the adsorption direction), and the vacuum degree is 0.4bar-0.6bar. The adsorbed water, carbon dioxide, nitrogen and a small amount of other gas components are extracted and discharged to the atmosphere, and the adsorbent is regenerated. However, the adsorption unit of the VPSA oxygen production equipment in the prior art is of tower type, which has a long manufacturing cycle, a large floor space, a long filling cycle, difficulty in replacing the filler, and a high filler cost. Utility Model Content

[0003] Based on this, it is necessary to provide an adsorption unit, an adsorption structure and a VPSA oxygen production equipment to address the problems that the adsorption unit of the VPSA oxygen production equipment in the prior art is tower-type, has a long manufacturing cycle, occupies a large area, has a long filling cycle, is difficult to replace the filler, and has a high filler cost.

[0004] The technical solution is as follows:

[0005] In a first aspect, an adsorption unit is provided, comprising:

[0006] A mounting body, wherein the mounting body is provided with a mounting channel for loading the adsorption member;

[0007] a first mounting cover, the first mounting cover being disposed at one end of the mounting channel, a mounting protrusion being disposed on a side of the first mounting cover close to the mounting body, a first communication port communicating with the mounting channel being disposed on an outer side wall of the mounting protrusion, and a second communication port corresponding to and communicating with the first communication port being disposed on a side of the first mounting cover away from the mounting body; and

[0008] The second installation cover is disposed at the other end of the installation channel, and the second installation cover is provided with a communication channel communicating with the installation channel.

[0009] The technical solution is further described below:

[0010] In one embodiment, there are at least two first communication ports, each of which is arranged at intervals along the circumference of the mounting protrusion and is connected to the second communication port.

[0011] In one of the embodiments, the adsorption unit further includes a pressing member, which is disposed on a side of the first mounting cover where the mounting protrusion is disposed, and is used to press the adsorption member into the mounting channel.

[0012] In one of the embodiments, there are at least two pressing members, and along the circumference of the mounting protrusion, each of the pressing members is connected to the outer side wall of the mounting protrusion and is staggered with each of the first connecting ports in sequence.

[0013] In one of the embodiments, the first mounting cover is provided with an annular protrusion on one side of the mounting protrusion, the annular protrusion is spaced and sleeved on the outer wall of the mounting protrusion, the inner wall of the annular protrusion is connected to each of the clamping members, and the outer wall of the annular protrusion is sealed with the inner wall of the mounting channel.

[0014] In one of the embodiments, the adsorption unit further includes a reinforcement member, which is installed on a side of the first mounting cover where the mounting protrusion is provided and is connected to the clamping member.

[0015] In the second aspect, an adsorption structure is provided, comprising a first convergence piece, a second convergence piece and the adsorption unit, wherein there is at least one adsorption unit, and the second connecting port in each of the adsorption units is connected to the first convergence piece, and the connecting channel in each of the adsorption units is connected to the second convergence piece.

[0016] In one embodiment, the first mounting cover in each of the adsorption units is provided with a first limiting portion on one side of the second connecting port, the first conduit is provided with a conduit cavity, and the first conduit is provided with a mounting hole and a second limiting portion on one side close to the first mounting cover, the number of the mounting holes is the same as the number of the first connecting ports, each of the mounting holes is connected to the conduit cavity, the number of the second limiting portions is the same as the number of the first limiting portions, and when each of the first connecting ports passes through each of the mounting holes and is connected to the conduit cavity, each of the first limiting portions corresponds to and cooperates with each of the second limiting portions.

[0017] In one embodiment, the first collector, the second collector and each of the adsorption units cooperate to form an adsorption assembly, the number of the adsorption assemblies is at least two, and the adsorption structure further includes a connecting assembly, and the connecting assembly is fixedly connected to each of the adsorption assemblies.

[0018] On the other hand, a VPSA oxygen production device is provided, comprising the adsorption structure.

[0019] When the adsorption unit, adsorption module and VPSA oxygen production equipment in the above embodiments are used, the adsorption component is loaded in the installation channel so that the treated raw air can enter the installation channel through the second connecting port and the first connecting port in sequence. When the raw air flows through the adsorption component in the installation channel, the adsorption component will adsorb moisture, carbon dioxide, nitrogen and a small amount of other gas components in the raw air, while the oxygen in the raw air is a non-adsorbed component and is discharged from the adsorption unit through the connecting channel to achieve the oxygen production function. Compared with the tower adsorption unit in the prior art, the adsorption unit, adsorption module and VPSA oxygen production equipment in the present application have at least the following advantages: 1. The adsorption unit is a modular structure with a small volume, a short production cycle, a small footprint, and a low transportation cost. The number of adsorption units can be increased or decreased according to actual usage. 2. The adsorption component in the adsorption unit is pressed together by the first installation cover and the second installation cover, and there is no need to add an inert porcelain ball on the top as a pressing device for the adsorption component. The filling cycle is short, the filler cost is low, and the filling method is simple. 3. The amount of adsorbents in a single adsorption unit is small. When replacing the adsorption components, the adsorption unit can be directly replaced, or the adsorption components in the adsorption unit can be replaced. The replacement cost is low and the replacement time is short. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] FIG. 1 is a schematic structural diagram of an adsorption unit according to an embodiment.

[0023] FIG. 2 is a schematic structural diagram of the first installation cover in FIG. 1 .

[0024] FIG. 3 is a schematic structural diagram of the installation body in FIG. 1 .

[0025] FIG. 4 is a schematic structural diagram of an adsorption structure according to an embodiment.

[0026] FIG. 5 is a schematic structural diagram of the first current collector in FIG. 4 .

[0027] Description of reference numerals:

[0028] 10. Adsorption structure; 100. Adsorption unit; 110. Mounting body; 111. Mounting channel; 120. First mounting cover; 121. Mounting protrusion; 122. First connecting port; 123. Second connecting port; 124. First limiting portion; 125. Annular protrusion; 130. Second mounting cover; 140. Pressing member; 150. Reinforcing member; 200. First conduit; 211. Conduit cavity; 212. Mounting hole; 213. Second limiting portion; 214. Gas collecting pipe; 215. Baffle; 300. Second conduit; 400. Connecting assembly; 410. Bending plate; 420. Fixed clamp. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0030] In one embodiment, an adsorption unit 100 is provided, comprising a mounting body 110, a first mounting cover 120 and a second mounting cover 130. The mounting body 110 is provided with a mounting channel 111 for loading adsorption components. The first mounting cover 120 is covered at one end of the mounting channel 111, a mounting protrusion 121 is provided on the side of the first mounting cover 120 close to the mounting body 110, a first communication port 122 communicating with the mounting channel 111 is provided on the outer wall of the mounting protrusion 121, and a second communication port 123 corresponding to the first communication port 122 is provided on the side of the first mounting cover 120 away from the mounting body 110. The second mounting cover 130 is covered at the other end of the mounting channel 111, and the second mounting cover 130 is provided with a communication channel communicating with the mounting channel 111.

[0031] When the adsorption unit 100 in the above embodiment is used, the adsorption component is loaded in the installation channel 111, so that the processed raw air can enter the installation channel 111 through the second connecting port 123 and the first connecting port 122 in sequence. When the raw air flows through the adsorption component in the installation channel 111, the adsorption component will adsorb moisture, carbon dioxide, nitrogen and a small amount of other gas components in the raw air, while the oxygen in the raw air is a non-adsorbed component and is discharged from the adsorption unit 100 from the connecting channel to achieve the oxygen production function. Compared with the tower adsorption unit in the prior art, the adsorption unit 100 in the present application has at least the following advantages: 1. The adsorption unit 100 is a modular structure with a small volume, a short production cycle, a small footprint, and a low transportation cost. The number of adsorption units 100 can be increased or decreased according to actual usage. 2. The adsorption component in the adsorption unit 100 is pressed together by the first installation cover 120 and the second installation cover 130, and there is no need to add an inert porcelain ball on the top as a pressing device for the adsorption component. The filling cycle is short, the filler cost is low, and the filling method is simple. 3. The amount of adsorbents in a single adsorption unit 100 is small. When replacing the adsorption components, the adsorption unit 100 can be directly replaced, or the adsorption components in the adsorption unit 100 can be replaced. The replacement cost is low and the replacement time is short.

[0032] The structure of the first installation cover 120 may be the same as or different from the structure of the second installation cover 130. Specifically in this embodiment, the structure of the first installation cover 120 is the same as the structure of the second installation cover 130. The first communication port 122 and the second communication port 123 can cooperate to form a communication channel.

[0033] The first mounting cover 120 can be covered at one end of the mounting channel 111 by screwing, clamping, plugging, welding, or other connection methods. The second mounting cover 130 can be covered at the other end of the mounting channel 111 by screwing, clamping, plugging, welding, or other connection methods. Specifically in this embodiment, the mounting body 110 can be set as a separator. The first mounting cover 120 and the second mounting cover 130 can both be set as cover plates. The first mounting cover 120 and the second mounting cover 130 are respectively covered at both ends of the mounting body 110, and correspondingly seal the two ends of the mounting channel 111.

[0034] It should be noted that the adsorption unit 100 refers to a container for filling an adsorption member. The adsorption member may be an adsorbent, a molecular sieve or other adsorption filler.

[0035] As shown in FIG. 1 and FIG. 2 , optionally, there are at least two first communication ports 122, each of which is arranged at intervals along the circumference of the mounting protrusion 121, and is connected to the second communication port 123. In this way, the raw air in the second communication port 123 can be divided into multiple streams through the first communication port 122 and enter the mounting channel 111, so that the raw air is more evenly distributed in the mounting channel 111, ensuring that the adsorbent can fully adsorb the adsorbent components in the raw air, thereby ensuring the purity of the produced oxygen and improving the reliability of the adsorption unit 100.

[0036] In other embodiments, the raw air may also enter the installation channel 111 from the connecting channel, and after being adsorbed by the adsorbent in the installation channel 111, the produced oxygen is discharged from the first connecting port 122 and the second connecting port 123 in sequence.

[0037] As shown in FIGS. 1 , 2 and 3 , in one embodiment, the adsorption unit 100 further includes a pressing member 140 , which is disposed on a side of the first mounting cover 120 where the mounting protrusion 121 is disposed, and is used to press the adsorption member into the mounting channel 111 .

[0038] Among them, the clamping member 140 can be set as a clamping block, a clamping strip or other clamping structures. The number of the clamping members 140 can be flexibly adjusted according to the needs of actual use. Specifically in this embodiment, the installation channel 111 extends to the opposite sides of the installation body 110 in a straight line direction. The first mounting cover 120 and the second mounting cover 130 are respectively provided with a first clamping member and a second clamping member on the opposite side, and the first clamping member and the second clamping member cooperate to clamp the adsorption member into the mounting channel 111.

[0039] As shown in FIG2 , further, there are at least two pressing members 140, and along the circumference of the mounting protrusion 121, each pressing member 140 is connected to the outer wall of the mounting protrusion 121, and is staggered with each first connecting port 122 in sequence. In this way, by increasing the number of pressing members 140, the pressing area between the pressing member 140 and the adsorbent is increased, ensuring that the pressing member 140 can press the adsorbent in the mounting channel 111, thereby improving the reliability of the adsorption unit 100. In addition, each pressing member 140 and each first connecting port 122 are staggered in sequence along the circumference of the mounting protrusion 121, ensuring that the pressing member 140 will not block the first connecting port 122, thereby ensuring that the gas can flow smoothly between the first connecting port 122 and the mounting channel 111, thereby improving the reliability of the adsorption unit 100.

[0040] The staggered arrangement of each pressing member 140 and each first communication opening 122 means that, along the circumferential direction of the mounting protrusion 121, there is one communication opening between two adjacent pressing members 140, and there is one pressing member 140 between two adjacent first communication openings 122. Specifically in this embodiment, the mounting protrusion 121 is cylindrical. When the first mounting cover 120 is covered at one end of the mounting channel 111, the mounting protrusion 121 is located in the mounting channel 111.

[0041] As shown in FIG. 2 and FIG. 3 , optionally, the first installation cover 120 is provided with an annular protrusion 125 on one side of the installation protrusion 121, the annular protrusion 125 is sleeved on the outer side wall of the installation protrusion 121 at intervals, the inner side wall of the annular protrusion 125 is connected to each pressing member 140, and the outer side wall of the annular protrusion 125 is sealed with the inner side wall of the installation channel 111. In this way, the installation protrusion 121, the annular protrusion 125 and the plurality of pressing members 140 can cooperate to form a wire mesh structure, so that the strength of the first installation cover 120 is increased, and the reliability of the adsorption unit 100 is improved.

[0042] Specifically in this embodiment, the adsorption unit 100 further includes a first sealing ring, which is filled between the outer side wall of the annular protrusion 125 and the inner side wall of the installation channel 111 to seal the annular protrusion 125 with the installation body 110 .

[0043] As shown in Fig. 1 and Fig. 2, in one embodiment, the adsorption unit 100 further includes a reinforcing member 150, which is installed on one side of the first mounting cover 120 where the mounting protrusion 121 is provided, and is connected to the pressing member 140. In this way, the reinforcing member 150 can act as a reinforcing rib, thereby increasing the strength of the pressing member 140, ensuring that the pressing member 140 can press the adsorption member in the mounting channel 111, and improving the reliability of the adsorption unit 100.

[0044] Among them, the reinforcement member 150 can be set as a reinforcement block, a reinforcement plate or other reinforcement structure. The number of reinforcement members 150 can be flexibly adjusted according to the actual needs of use. Specifically in this embodiment, the reinforcement member 150 is arranged between the annular protrusion 125 and the mounting protrusion 121. The reinforcement member 150, the pressing member 140 and the first mounting cover 120 are integrally formed.

[0045] As shown in Fig. 1, Fig. 2 and Fig. 4, in one embodiment, an adsorption structure 10 is provided, comprising a first collector 200, a second collector 300 and an adsorption unit 100 in any of the above embodiments. There is at least one adsorption unit 100, and the second communication port 123 in each adsorption unit 100 is connected to the first collector 200, and the communication channel in each adsorption unit 100 is connected to the second collector 300. In this way, the adsorption structure 10 can simultaneously transport raw air to each adsorption unit 100 through one of the first collector 200 and the second collector 300, and can simultaneously collect oxygen discharged from each adsorption unit 100 through the other of the first collector 200 and the second collector 300, thereby improving the convenience of the adsorption structure 10.

[0046] As shown in Figures 1, 4 and 5, optionally, the first mounting cover 120 in each adsorption unit 100 is provided with a first limiting portion 124 on one side of the second connecting port 123, the first conduit 200 is provided with a conduit cavity 211, and the first conduit 200 is provided with mounting holes 212 and second limiting portions 213 on the side close to the first mounting cover 120. The number of mounting holes 212 is the same as the number of first connecting ports 122, and each mounting hole 212 is connected to the conduit cavity 211. The number of second limiting portions 213 is the same as the number of first limiting portions 124. When each first connecting port 122 passes through each mounting hole 212 and is connected to the conduit cavity 211, each first limiting portion 124 corresponds to and cooperates with each second limiting portion 213. In this way, during the assembly of the adsorption unit 100 and the first collector 200 , the first limiting portion 124 and the second limiting portion 213 can cooperate to play the role of limiting and positioning, thereby improving the convenience of assembling the adsorption structure 10 .

[0047] Among them, the number of the first limiting portion 124 and the second limiting portion 213 can be flexibly adjusted according to the actual needs of use. Specifically in this embodiment, the connection structure between the first collector 200 and the first mounting cover 120 is the same as the connection structure between the second collector 300 and the second mounting cover 130. One of the first limiting portion 124 and the second limiting portion 213 is set as a limiting protrusion, and the other is set as a limiting groove. The first limiting portion 124 is set around the axis of the second connecting port 123. The second limiting portion 213 is set around the axis of the mounting hole 212. The first collector 200 can be fixed to the first mounting cover 120 by screwing, clamping, plugging, welding or other methods.

[0048] As shown in FIG5 , specifically in this embodiment, the first flow collector 200 includes a gas collecting pipe 214 and a baffle 215. The baffle 215 is installed on one end of the gas collecting pipe 214 by screwing, clamping, plugging or other means to seal one end of the gas collecting pipe 214, and the gas collecting pipe 214 and the baffle 215 cooperate to form a flow collecting cavity 211, and the mounting hole 212 and the second limiting portion 213 are both arranged on one side of the gas collecting pipe 214. The adsorption structure 10 also includes a second sealing ring, which is filled between the gas collecting pipe 214 and the baffle 215 to seal the gas collecting pipe 214 and the baffle 215 accordingly.

[0049] As shown in Fig. 4, in one embodiment, the first collector 200, the second collector 300 and each adsorption unit 100 cooperate to form an adsorption assembly, the number of which is at least two, and the adsorption structure 10 further includes a connecting assembly 400, which is fixedly connected to each adsorption assembly. In this way, the multiple adsorption assemblies are connected into a whole through the connecting assembly 400, so that the multiple adsorption assemblies can produce oxygen at the same time to meet the requirements for the oxygen production rate, thereby improving the practicality of the adsorption structure 10.

[0050] As shown in Fig. 4, optionally, the connection assembly 400 is located on a side of the adsorption assembly provided with the first collector 200. The connection assembly 400 includes a bending plate 410 and a fixed clamping plate 420. The contour shape of the bending plate 410 is adapted to the contour shape of the gas collecting pipe. The number of the bending plates 410 is the same as the number of the gas collecting pipes. Each bending plate 410 is correspondingly sleeved on the outer side wall of each gas collecting pipe. The number of the fixed clamping plate 420 is at least one, and each fixed clamping plate 420 is clamped and fixed to all the bending plates 410.

[0051] Specifically in this embodiment, there are two connection components 400, one of the two connection components 400 is fixedly connected to all the first collectors 200 in the adsorption structure 10, and the other of the two connection components 400 is fixedly connected to all the second collectors 300 in the adsorption structure 10. The adsorption structure 10 further includes at least one locking screw, each of which is penetrated through the connection component 400 and the adsorption component to lock the connection component 400 and the adsorption component as a whole.

[0052] In one embodiment, a VPSA oxygen production device is provided, comprising the adsorption structure 10 in any one of the above embodiments.

[0053] The VPSA oxygen production equipment in the present application has at least the following advantages: 1. The adsorption unit 100 is a modular structure with a small volume, a short production cycle, a small footprint, and low transportation costs. The number of adsorption units 100 can be increased or decreased according to actual usage. 2. The adsorption component in the adsorption unit 100 is pressed together by the first mounting cover 120 and the second mounting cover 130. There is no need to add inert ceramic balls on the top as a clamping device for the adsorption component. The filling cycle is short, the filler cost is low, and the filling method is simple. 3. The filling amount of the adsorption component in a single adsorption unit 100 is small. When the adsorption component of the adsorption structure 10 is replaced, the adsorption unit 100 can be directly replaced, or the adsorption component in the adsorption unit 100 can be replaced. The replacement cost is low and the replacement time is short.

[0054] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0055] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0057] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0059] It should also be understood that when explaining the connection relationship or positional relationship of elements, although not explicitly described, the connection relationship and positional relationship are interpreted as including an error range, which should be within the acceptable deviation range of a specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" may mean within one or more standard deviations, which are not limited here.

[0060] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. An adsorption unit, characterized in that: include: A mounting body, wherein the mounting body is provided with a mounting channel for loading the adsorption member; a first mounting cover, the first mounting cover being disposed at one end of the mounting channel, a mounting protrusion being disposed on a side of the first mounting cover close to the mounting body, a first communication port communicating with the mounting channel being disposed on an outer side wall of the mounting protrusion, and a second communication port corresponding to and communicating with the first communication port being disposed on a side of the first mounting cover away from the mounting body; and The second installation cover is disposed at the other end of the installation channel, and the second installation cover is provided with a communication channel communicating with the installation channel.

2. The adsorption unit according to claim 1, characterized in that: There are at least two first communication ports, each of which is arranged at intervals along the circumference of the mounting protrusion and is communicated with the second communication port.

3. The adsorption unit according to claim 2, characterized in that: The adsorption unit further includes a pressing member, which is disposed on a side of the first mounting cover where the mounting protrusion is disposed, and is used to press the adsorption member into the mounting channel.

4. The adsorption unit according to claim 3, characterized in that: There are at least two pressing members, and along the circumference of the mounting protrusion, each of the pressing members is connected to the outer side wall of the mounting protrusion and is staggered with each of the first communicating ports in sequence.

5. The adsorption unit according to claim 4, characterized in that: The first mounting cover is provided with an annular protrusion on one side of the mounting protrusion, the annular protrusion is sleeved on the outer side wall of the mounting protrusion, the inner side wall of the annular protrusion is connected to each of the clamping members, and the outer side wall of the annular protrusion is sealed with the inner side wall of the mounting channel.

6. The adsorption unit according to any one of claims 3 to 5, characterized in that: The adsorption unit further includes a reinforcing member, which is installed on a side of the first mounting cover where the mounting protrusion is provided and is connected to the pressing member.

7. An adsorption structure, characterized in that: It comprises a first convergence piece, a second convergence piece and an adsorption unit as described in any one of claims 1 to 6, wherein there is at least one adsorption unit, the second connecting port in each of the adsorption units is connected to the first convergence piece, and the connecting channel in each of the adsorption units is connected to the second convergence piece.

8. The adsorption structure according to claim 7, characterized in that: The first mounting cover in each of the adsorption units is provided with a first limiting portion on one side of the second connecting port, the first conduit is provided with a conduit cavity, and the first conduit is provided with a mounting hole and a second limiting portion on one side close to the first mounting cover, the number of the mounting holes is the same as the number of the first connecting ports, and each of the mounting holes is connected to the conduit cavity, and the number of the second limiting portions is the same as the number of the first limiting portions, and when each of the first connecting ports passes through each of the mounting holes and is connected to the conduit cavity, each of the first limiting portions corresponds to the limiting cooperation with each of the second limiting portions.

9. The adsorption structure according to claim 8, characterized in that: The first collector, the second collector and each of the adsorption units cooperate to form an adsorption assembly, the number of the adsorption assemblies is at least two, and the adsorption structure further includes a connecting assembly, and the connecting assembly is fixedly connected to each of the adsorption assemblies.

10. A VPSA oxygen production equipment, characterized in that: Comprising the adsorption structure according to any one of claims 7 to 9.

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