阅读说明：本技术 一种可以提高氮气纯度的变压吸附制氮机组件 (Pressure swing adsorption nitrogen making machine assembly capable of improving nitrogen purity ) 是由 刘玉萍 于 2020-04-28 设计创作，主要内容包括：本发明公开了一种可以提高氮气纯度的变压吸附制氮机组件,具体涉及制氮机领域,包括空滤箱体和PSA制氮气主机,空滤箱体的内部安装有冷冻干燥罐、制冷机构和空气滤盒,制冷机构的输出端固定连接有制冷控制阀,制冷控制阀的另一端固定连接有位于冷冻干燥罐内部的制冷管。本发明通过设置冷冻干燥机构,利用冷冻干燥罐对压缩气体进行低冷冻,将压缩气体内部水分进行结冰析出的方式黏附在冷冻干燥罐内壁或制冷管表面,实现对压缩空气的除湿干燥,相较于传统的干燥结构,其干燥后的气流温度较低进入变压吸附制氮机内部时能够有效帮助其散热,解决变压吸附制氮机发热量大的问题,提高制氮机使用寿命。(The invention discloses a pressure swing adsorption nitrogen generator component capable of improving nitrogen purity, and particularly relates to the field of nitrogen generators. Compared with the traditional drying structure, the dehumidifying and drying device can effectively help the heat dissipation of the dried airflow when the temperature of the dried airflow is lower and the airflow enters the pressure swing adsorption nitrogen making machine, solves the problem of large heat productivity of the pressure swing adsorption nitrogen making machine, and prolongs the service life of the nitrogen making machine.)

1. The utility model provides a pressure swing adsorption nitrogen generator subassembly that can improve nitrogen gas purity, includes empty filter box body (1) and PSA system nitrogen host computer (4), compression air inlet (2) have been seted up to the input of empty filter box body (1), the output fixedly connected with endotracheal tube (3) of empty filter box body (1), the other end of endotracheal tube (3) and the input fixed connection of PSA system nitrogen host computer (4), its characterized in that: the air filter is characterized in that a freeze drying tank (7) is fixedly arranged in the air filter box body (1), an air filter box cabinet door (5) is arranged on the surface of the air filter box body (1), a control panel (6) is fixedly arranged on the surface of the air filter box cabinet door (5), a refrigerating mechanism (8) and an air filter box (9) are fixedly arranged in the air filter box body (1), an output end of the refrigerating mechanism (8) is fixedly connected with a refrigerating control valve (82), the other end of the refrigerating control valve (82) is fixedly connected with a refrigerating pipe (81) positioned in the freeze drying tank (7), a freeze-drying air inlet (71) and a freeze-drying air outlet (72) are formed in the outer side of the freeze drying tank (7), and the ends of the freeze-drying air inlet (71) and the freeze-drying air outlet (72) are respectively fixedly connected with the end of a compression air inlet (2) and the input end of the air filter box (9), the inside fixed mounting of air filter box (9) has miscellaneous dirt filter screen (91), RO reverse osmosis filter membrane (92) and active carbon filter layer (93), air current induction port (10) have been seted up to one side of air filter box (9), the tip of air current induction port (10) is linked together in the tip of endotracheal tube (3).

2. The pressure swing adsorption nitrogen generator assembly capable of increasing the purity of nitrogen of claim 1, wherein: refrigerating mechanism (8) comprise refrigeration pump and air compressor, the inside packing of refrigeration pipe (81) has the refrigerant fluid, the surface of refrigeration pipe (81) and the inner wall of freeze-drying jar (7) are the matte structure, one side of refrigeration pipe (81) and the inner wall of freeze-drying jar (7) are laminated mutually.

3. The pressure swing adsorption nitrogen generator assembly capable of increasing the purity of nitrogen of claim 1, wherein: miscellaneous dirt filter screen (91), RO reverse osmosis membrane (92) and active carbon filter layer (93) are arranged from a left side to the right side in proper order, freeze-drying air guide export (72) and air current guide export (10) are located the right side of miscellaneous dirt filter screen (91) and the right side of active carbon filter layer (93) respectively and are linked together with the inner chamber of air filter box (9), the inside packing of active carbon filter layer (93) has the active carbon granule, the active carbon granule reduces from a left side to right granule diameter gradually.

4. The pressure swing adsorption nitrogen generator assembly capable of increasing the purity of nitrogen of claim 1, wherein: the surface of miscellaneous dirt filter screen (91) is hemisphere face protruding structure, clearance mouth (94) that are located miscellaneous dirt filter screen (91) below are seted up to the bottom surface of air filter box (9), the surface threaded connection of clearance mouth (94) has sealed lid.

5. The pressure swing adsorption nitrogen generator assembly capable of increasing the purity of nitrogen of claim 1, wherein: the bottom surface of freeze-drying jar (7) has been seted up clearance hole and the sealed lid of fixedly connected with pressurize (73), the sealed junction of lid (73) of pressurize and freeze-drying jar (7) is equipped with sealed hasp, the bottom surface of freeze-drying jar (7) inner chamber is the inclined plane structure.

6. The pressure swing adsorption nitrogen generator assembly capable of increasing the purity of nitrogen of claim 1, wherein: the input of refrigeration mechanism (8) and the output electric connection of control panel (6), control panel (6) are PLC controller or single chip microcomputer structure, the output electric connection of control panel (6) has the temperature sensor who is located freeze drying jar (7) inboard.

7. The pressure swing adsorption nitrogen generator assembly capable of increasing the purity of nitrogen of claim 1, wherein: the surface of the freeze drying tank (7) and the surface of the air filter box (9) are provided with a heat insulation layer, the surface of the tracheal catheter (3) is sleeved with a heat insulation sleeve, and the heat insulation layer and the heat insulation sleeve are foam cotton members.

Technical Field

The invention relates to the technical field of nitrogen making machines, in particular to a pressure swing adsorption nitrogen making machine assembly capable of improving nitrogen purity.

Background

Nitrogen is produced by the oxygen-discharging and fresh-keeping package in the food industry, the purification and covering gas in the beverage industry, the nitrogen-charging and oxygen-discharging of nitrogen-charging packages and containers in the pharmaceutical industry, the protective gas in the electronic industry and the semiconductor production process and the like due to the stable chemical properties of the nitrogen, and along with the rapid development of the modern industry, higher requirements are put forward on nitrogen making machine components and nitrogen making equipment, the pressure swing adsorption nitrogen making machine components comprise air compression equipment, air drying equipment, control filtering equipment and a PSA nitrogen making main machine, the nitrogen making generally adopts clean compressed air as a raw material, the novel nitrogen production technology which uses the carbon molecular sieve as an adsorbent and uses the pressure swing adsorption principle to make the carbon molecular sieve full of micropores selectively adsorb gas molecules to obtain nitrogen has the advantages that the structure of the existing nitrogen production machine is relatively perfect, the input raw gas can be purified through different devices respectively, and the nitrogen production technology is applicable to nitrogen purification with various purities.

But the nitrogen generator subassembly that can improve nitrogen purity now blocks up the adsorption aperture of molecular sieve for preventing impurity or moisture, the molecular sieve weakens in case of blockking up other gas adsorption ability in the air promptly, cause the purification effect to reduce, consequently often need dry raw material gas, traditional drying means is dried through the mode of heat drying mostly, the pressure swing adsorption nitrogen generator subassembly that current improvement nitrogen purity is all relatively poor at during operation radiating effect, and the noise is great, gas raw materials after the heat drying lets in and more aggravates its problem of generating heat behind the nitrogen generator subassembly, reduction equipment life.

It is therefore desirable to provide a pressure swing adsorption nitrogen generator module that can improve the purity of nitrogen.

Disclosure of Invention

In order to overcome the above defects in the prior art, embodiments of the present invention provide a pressure swing adsorption nitrogen generator assembly capable of improving nitrogen purity, in which a freeze drying mechanism is provided, a freeze drying tank is used to perform low freezing on compressed gas, and water in the compressed gas is adhered to the inner wall of the freeze drying tank or the surface of a refrigerating pipe in a manner of freezing and separating out, so as to achieve dehumidification and drying of compressed air, and an RO reverse osmosis filter membrane and an activated carbon filter layer structure in an air filter box are used to achieve multi-stage filtration of compressed air, so as to solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a pressure swing adsorption nitrogen making machine assembly capable of improving nitrogen purity comprises an air filter box body and a PSA nitrogen making host machine, wherein a compression air inlet is formed in the input end of the air filter box body, an endotracheal tube is fixedly connected to the output end of the air filter box body, the other end of the endotracheal tube is fixedly connected with the input end of the PSA nitrogen making host machine, a freeze drying tank is fixedly mounted inside the air filter box body, an air filter box door is arranged on the surface of the air filter box body, a control panel is fixedly mounted on the surface of the air filter box door, a refrigerating mechanism and an air filter box are fixedly mounted inside the air filter box body, a refrigerating control valve is fixedly connected to the output end of the refrigerating mechanism, a refrigerating pipe positioned inside the freeze drying tank is fixedly connected to the other end of the refrigerating control valve, and a freeze-drying air guide inlet and a freeze-drying air guide outlet are formed in the outer side of the freeze drying tank, the end parts of the freeze-drying air guide inlet and the freeze-drying air guide outlet are respectively fixedly connected with the end part of the compressed air inlet and the input end of the air filter box, a dust filter screen, an RO reverse osmosis filter membrane and an activated carbon filter layer are fixedly arranged in the air filter box, an air flow guide outlet is formed in one side of the air filter box, and the end part of the air flow guide outlet is communicated with the end part of the tracheal catheter.

In a preferred embodiment, the refrigeration mechanism is composed of a refrigeration pump and an air compressor, the refrigeration pipe is filled with a refrigerant liquid, the surface of the refrigeration pipe and the inner wall of the freeze-drying tank are of a rough surface structure, and one side of the refrigeration pipe is attached to the inner wall of the freeze-drying tank.

In a preferred embodiment, the dust filter screen, the RO reverse osmosis membrane and the activated carbon filter layer are sequentially arranged from left to right, the freeze-drying air outlet and the air flow outlet are respectively located on the right side of the dust filter screen and the right side of the activated carbon filter layer and are communicated with an inner cavity of the air filter box, activated carbon particles are filled in the activated carbon filter layer, and the diameters of the activated carbon particles are gradually reduced from left to right.

In a preferred embodiment, the surface of the dust filter screen is in a hemispherical convex structure, a cleaning port located below the dust filter screen is formed in the bottom surface of the air filter box, and a sealing cover is connected to the surface of the cleaning port in a threaded manner.

In a preferred embodiment, the bottom surface of the freeze drying tank is provided with a cleaning hole and fixedly connected with a pressure maintaining sealing cover, a sealing lock catch is arranged at the joint of the pressure maintaining sealing cover and the freeze drying tank, and the bottom surface of the inner cavity of the freeze drying tank is of an inclined plane structure.

In a preferred embodiment, the input end of the refrigeration mechanism is electrically connected with the output end of a control panel, the control panel is a PLC controller or a single chip microcomputer structure, and the output end of the control panel is electrically connected with a temperature sensor located inside the freeze drying tank.

In a preferred embodiment, the surfaces of the freeze-drying tank and the air filter box are provided with heat insulation layers, the surface of the endotracheal tube is sleeved with a heat insulation sleeve, and the heat insulation layers and the heat insulation sleeve are made of foam cotton materials.

The invention has the technical effects and advantages that:

1. compared with the traditional drying structure, the dehumidifying and drying device can effectively help the heat dissipation of the dried airflow when the temperature of the dried airflow is lower and the airflow enters the pressure swing adsorption nitrogen making machine, solve the problem of large heat productivity of the pressure swing adsorption nitrogen making machine and prolong the service life of the nitrogen making machine;

2. according to the invention, the air filter box structure is arranged, the RO reverse osmosis filter membrane and the activated carbon filter layer structure in the air filter box are utilized to realize multi-stage filtration of compressed air, air molecules can pass through the RO reverse osmosis filter membrane under a certain pressure, and impurities such as ice particles, dust and the like in the compressed air cannot pass through the RO reverse osmosis filter membrane, so that the impurities in the compressed air are separated, the purpose of purifying the compressed air is achieved, and the filtration is efficient and harmless.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural diagram of the air filtering box body of the invention.

Fig. 3 is a schematic view of the internal structure of the freeze-drying tank of the present invention.

FIG. 4 is a schematic view of the internal structure of the air filter cartridge of the present invention.

The reference signs are: 1. an air filter box body; 2. compressing the air inlet; 3. a tracheal tube; 4. a PSA nitrogen preparation main machine; 5. an air filter box door; 6. a control panel; 7. a freeze drying tank; 8. a refrigeration mechanism; 9. an air filter box; 10. an airflow guide outlet; 71. a freeze-drying gas inlet; 72. a freeze-drying gas outlet; 73. pressure maintaining sealing covers; 81. a refrigeration pipe; 82. a refrigeration control valve; 91. a dust filter screen; 92. RO reverse osmosis membrane; 93. an active carbon filter layer; 94. and cleaning the opening.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in the attached fig. 1-4, a pressure swing adsorption nitrogen generator assembly capable of improving nitrogen purity comprises an air filter box 1 and a PSA nitrogen generator 4, wherein an input end of the air filter box 1 is provided with a compressed air inlet 2, an output end of the air filter box 1 is fixedly connected with an endotracheal tube 3, the other end of the endotracheal tube 3 is fixedly connected with an input end of the PSA nitrogen generator 4, a freeze drying tank 7 is fixedly installed inside the air filter box 1, a surface of the air filter box 1 is provided with an air filter box door 5, a surface of the air filter box door 5 is fixedly provided with a control panel 6, a refrigeration mechanism 8 and an air filter box 9 are fixedly installed inside the air filter box 1, an output end of the refrigeration mechanism 8 is fixedly connected with a refrigeration control valve 82, the other end of the refrigeration control valve 82 is fixedly connected with a refrigeration tube 81 positioned inside the freeze drying tank 7, an air inlet 71 and an air outlet 72 are arranged outside the freeze drying tank 7, the freeze-drying air guide inlet 71 and the freeze-drying air guide outlet 72 are fixedly connected with the end of the compressed air inlet 2 and the input end of the air filter box 9 respectively, a dust filter screen 91, an RO reverse osmosis filter membrane 92 and an activated carbon filter layer 93 are fixedly installed in the air filter box 9, an airflow guide outlet 10 is formed in one side of the air filter box 9, and the end of the airflow guide outlet 10 is communicated with the end of the tracheal catheter 3.

The implementation mode is specifically as follows: compared with the traditional drying structure, the dehumidifying and drying device has the advantages that the heat dissipation of the compressed air can be effectively assisted when the temperature of the dried air flow is lower and the air flow enters the pressure swing adsorption nitrogen making machine, the problem of large heat productivity of the pressure swing adsorption nitrogen making machine is solved, and the service life of the nitrogen making machine is prolonged; in addition, the invention realizes multi-stage filtration of the compressed air by arranging the structure of the air filter box 9 and utilizing the structures of the RO reverse osmosis filter membrane 92 and the activated carbon filter layer 93 in the air filter box, air molecules can pass through the RO reverse osmosis filter membrane 92 under certain pressure, and impurities such as ice particles, dust and the like in the compressed air cannot pass through the RO reverse osmosis filter membrane 92, so that the impurities in the compressed air are separated, the aim of purifying the compressed air is fulfilled, and the filtration is efficient and harmless.

The refrigerating mechanism 8 is composed of a refrigerating pump and an air compressor, refrigerating liquid is filled in the refrigerating pipe 81, the surface of the refrigerating pipe 81 and the inner wall of the freeze drying tank 7 are of a rough surface structure, one side of the refrigerating pipe 81 is attached to the inner wall of the freeze drying tank 7, and the water in the compressed gas is adhered to the inner wall of the freeze drying tank 7 or the surface of the refrigerating pipe 81 in a freezing and separating mode, so that the compressed air is dehumidified and dried.

Wherein, miscellaneous dirt filter screen 91, RO reverse osmosis membrane 92 and active carbon filter layer 93 are arranged from a left side to the right side in proper order, freeze-drying air guide export 72 and air current export 10 are located miscellaneous dirt filter screen 91's right side and active carbon filter layer 93's right side respectively and are linked together with the inner chamber of air filter box 9, the inside packing of active carbon filter layer 93 has the active carbon granule, the active carbon granule reduces from a left side to right granule diameter gradually, utilize the inside RO reverse osmosis membrane 92 of air filter box 9 and the multistage filtration of active carbon filter layer 93 structure realization to compressed air.

Wherein, the surface of miscellaneous dirt filter screen 91 is hemisphere face protruding structure, and the clearance mouth 94 that is located miscellaneous dirt filter screen 91 below is seted up to the bottom surface of air filter box 9, and the surperficial threaded connection of clearance mouth 94 has sealed lid, realizes the clearance to air filter box 9.

Wherein, clearance hole and the sealed lid 73 of fixedly connected with pressurize have been seted up to the bottom surface of freeze-drying jar 7, and the sealed lid 73 of pressurize is equipped with sealed hasp with the junction of freeze-drying jar 7, and the bottom surface of the 7 inner chambers of freeze-drying jar is the inclined plane structure, realizes the clearance to the inside ice particle of freeze-drying jar 7.

Wherein, the input of refrigeration mechanism 8 and control panel 6's output electric connection, control panel 6 is PLC controller or single chip microcomputer structure, and control panel 6's output electric connection has the temperature sensor who is located freeze-drying tank 7 inboard, and temperature sensor's model is GY-BME280 type, realizes freeze-drying mechanism's automatic temperature control.

Wherein, the surfaces of the freeze drying tank 7 and the air filter box 9 are provided with a heat insulation layer, the surface of the tracheal catheter 3 is sleeved with a heat insulation sleeve, the heat insulation layer and the heat insulation sleeve are foam cotton members, the low temperature of the compressed air flow is kept, the heat insulation layer and the heat insulation sleeve are used for absorbing the working heat of the nitrogen making machine and helping the nitrogen making machine to dissipate heat.

Wherein, the model number of the control panel 6 is FX3U-48 MT.

The working principle of the invention is as follows:

the first step is as follows: communicating a pipeline between the air filter box body 1 and the PSA nitrogen making host machine 4, installing the component into the whole set of pressure swing adsorption nitrogen making machine component, connecting a compression air inlet 2 and an air compressor to input compressed air flow, and starting a refrigerating mechanism 8 to pre-refrigerate a freeze drying tank 7;

the second step is that: after the temperature in the freeze drying tank 7 reaches a set temperature, the whole pressure swing adsorption nitrogen generator component system can be started, compressed air is continuously input into the freeze drying tank 7 to exchange heat with the refrigerating pipe 81, the freeze drying tank 7 is used for carrying out low freezing on the compressed gas, and the water in the compressed gas is adhered to the inner wall of the freeze drying tank 7 or the surface of the refrigerating pipe 81 in a freezing and separating mode, so that the dehumidification and drying of the compressed air are realized, the temperature of the dried gas flow is lower and can absorb a large amount of heat generated by the work of the PSA nitrogen generator main machine 4 when entering the PSA nitrogen generator main machine 4, the heat dissipation of the PSA nitrogen generator main machine 4 is facilitated, the problem of large heat productivity of the pressure swing adsorption nitrogen generator is solved, and the service life of the nitrogen generator is prolonged;

the third step: compressed air enters the air filter box 9 after being frozen and dried, sequentially passes through the foreign dust filter screen 91, the RO reverse osmosis filter membrane 92 and the activated carbon filter layer 93, large-particle foreign dust and ice particles are filtered step by step, small-particle foreign dust and ice particles are filtered and particle impurities are adsorbed to the air flow, the air flow is purified step by step, and the impurities in the compressed air are prevented from blocking and damaging the molecular sieve in the PSA nitrogen making main machine 4.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.