Membrane separation nitrogen making device

Abstract

The utility model discloses a membrane separation nitrogen-making device and relates to the technical field of gas separation equipment. The device comprises a rack, a separation barrel is arranged in an inner cavity of the rack, a control assembly is arranged at one end of the separation barrel, one side of the control assembly is fixedly connected with a pretreatment assembly through a pipeline, and one side of the pretreatment assembly is fixedly connected with an air compressor through a pipeline. The air compressor is matched with the pretreatment assembly, oil removal, dust removal, water removal and constant temperature treatment of air are achieved through the heat exchanger and the filter, a clean and stable-temperature air source can be provided for the subsequent nitrogen making process, and the influence of impurities and temperature fluctuation on the separation membrane set is effectively avoided; the sealing plug reciprocates under the action of extrusion of the boss and rebounding of the spring, air enters the inner cavity of the separation barrel in a pulse mode, the dynamic characteristic of airflow can be enhanced through the air supply mode, and the distribution uniformity of the air in the separation barrel can be improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of gas separation equipment, and in particular relates to a membrane separation nitrogen generation device. Background Technology

[0002] A membrane separation nitrogen generator is a device that uses the difference in the permeation rate of different gas molecules by a polymer membrane to separate nitrogen from oxygen and other gases in the air. Its working principle is: under pressure, small molecule gases such as oxygen and water vapor in the air preferentially permeate through the separation membrane, while nitrogen, due to its larger molecules, permeates more slowly, thus enriching high-purity nitrogen on the other side of the membrane.

[0003] However, the air intake structure of existing membrane separation nitrogen generators is relatively simple, usually consisting of a simple pipe connection. Air is continuously input into the membrane separation module directly through the pipe. In actual use, this simple air intake method causes the pressure inside the membrane separation module to continuously increase and become unevenly distributed as air is continuously input, which negatively affects the nitrogen separation effect. Excessive pressure will shorten the membrane's lifespan and reduce the separation efficiency; uneven pressure distribution will cause inconsistent membrane separation effects in different areas, making it difficult to guarantee the purity and stability of the produced nitrogen.

[0004] To address these issues, we have provided a membrane separation nitrogen generation device. Utility Model Content

[0005] The purpose of this invention is to provide a membrane separation nitrogen generator. By coordinating the control components and the gas equalization components, it solves the problems of the simple air intake structure of the existing membrane separation nitrogen generator, which cannot guarantee uniform air intake distribution. Uneven air intake pressure distribution will cause inconsistent membrane separation effects in different areas, making it difficult to guarantee the purity and stability of the produced nitrogen.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a membrane separation nitrogen generator, comprising a frame, a separation cylinder disposed within the inner cavity of the frame, a control component disposed at one end of the separation cylinder, a pretreatment component fixedly connected to one side of the control component via a pipe, an air compressor fixedly connected to one side of the pretreatment component via a pipe, a separation membrane assembly disposed within the inner cavity of the separation cylinder, an air equalization component disposed on one side of the inner cavity of the separation cylinder, and a sealing shell comprising a sealing shell, one side of the sealing shell being fixedly connected to one end of the separation cylinder via a pipe, a spring fixedly connected to the bottom of the inner cavity of the sealing shell, a sealing plug fixedly connected to the top of the spring, a vent hole being formed on the surface of the sealing plug, a boss fixedly connected to the top of the top of the sealing plug, a drive motor fixedly connected to the top of the rear side of the inner cavity of the sealing shell, and a cam fixedly connected to the output shaft of the drive motor.

[0008] The present invention is further configured such that the gas equalization component includes a mounting rod, one end of which is fixedly connected to the inner wall of the separation cylinder, a mounting block is fixedly connected between the mounting rods, a stepper motor is fixedly connected to one side of the mounting block, and a gas equalization disk is fixedly connected to the output shaft of the stepper motor. When the stepper motor is turned on, the output shaft of the stepper motor drives the gas equalization disk to rotate, and the airflow is evenly discharged to the separation membrane assembly through the mesh on the surface of the rotating gas equalization disk, resulting in better separation effect.

[0009] The present invention is further configured such that a mounting groove is formed on the surface of the cam, and a roller is provided in the inner cavity of the mounting groove. As the cam rotates, the roller on one side intermittently contacts the boss on the top of the sealing plug. The roller can reduce the friction between the cam surface and the boss.

[0010] The present invention is further configured such that an annular guide rail is movably connected to the surface of the gas equalization disc, the outer wall of the annular guide rail is fixedly connected to the inner wall of the separation cylinder, and the gas equalization disc rotates in the inner cavity of the annular guide rail. The rotational stability of the gas equalization disc can be greatly improved by the limiting effect of the annular guide rail.

[0011] The present invention is further configured such that an oxygen pipe is provided at the top of the separation cylinder, and a nitrogen pipe is provided at one end of the separation cylinder. The ends of the oxygen pipe and the nitrogen pipe away from the separation cylinder are fixedly connected to mounting plates. The oxygen pipe discharges the separated non-nitrogen components, and the nitrogen pipe discharges the finally separated nitrogen. The mounting plates at one end of the oxygen pipe and the nitrogen pipe facilitate connection between the two and an external gas transmission pipeline.

[0012] The present invention is further configured such that the pretreatment component includes a fixed frame, one side of which is fixedly connected to one side of the sealing shell through a pipe, a heat exchanger is provided on one side of the inner cavity of the fixed frame, and a filter is fixedly connected to the other side of the inner cavity of the fixed frame. The air is treated by removing oil, dust, water and maintaining a constant temperature through the heat exchanger and the filter. The pretreated air then enters the separation cylinder for better separation effect.

[0013] The present invention is further configured such that a base plate is fixedly connected to the bottom of both the frame and the air compressor, and a caster wheel is provided at the bottom of the base plate. The base plate can support the bottom of the frame and the air compressor, and the caster wheel at the bottom of the base plate enables the entire device to move.

[0014] The present invention is further configured such that a support plate is fixedly connected to the inner cavity of the frame, and the top of the support plate is fixedly connected to the bottom of the separation cylinder through a support pad. The installation support structure composed of the support plate and the support pad can install and fix the separation cylinder in the inner cavity of the frame.

[0015] The present invention has the following beneficial effects.

[0016] 1. This utility model uses an air compressor in conjunction with a pretreatment component, and utilizes a heat exchanger and filter to achieve oil removal, dust removal, water removal, and temperature control of the air. This provides a clean and temperature-stable air source for the subsequent nitrogen production process, effectively avoiding the impact of impurities and temperature fluctuations on the separation membrane module. At the same time, the drive motor drives the cam to rotate, causing the sealing plug to move back and forth under the action of the boss extrusion and the spring rebound, allowing air to enter the inner cavity of the separation cylinder in a pulse manner. This air supply method can enhance the dynamic characteristics of the airflow and help improve the uniformity of air distribution in the separation cylinder.

[0017] 2. This utility model uses a stepper motor to drive the gas equalization plate to rotate. By utilizing the air vents on the surface of the rotating gas equalization plate, the airflow entering the separation cylinder can be further evenly discharged to the separation membrane group, ensuring that the airflow is evenly distributed on the surface of the separation membrane group, giving full play to the nitrogen generation performance of the separation membrane group, and improving the nitrogen separation efficiency and purity. The whole device achieves integrated operation of gas source purification, pulse gas supply and uniform gas distribution through the coordinated work of the pretreatment component, drive motor and stepper motor. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a three-dimensional view of a membrane separation nitrogen generation unit.

[0020] Figure 2 This is a cross-sectional schematic diagram of the sealing shell in a membrane separation nitrogen generator.

[0021] Figure 3 For membrane separation nitrogen generation unit Figure 2 A magnified view of a portion of point A in the middle.

[0022] Figure 4 This is a schematic diagram of the sealing plug in a membrane separation nitrogen generator.

[0023] Figure 5 This is a schematic diagram of the separation cylinder in a membrane separation nitrogen generator.

[0024] Figure 6 For membrane separation nitrogen generation unit Figure 5 A magnified view of a portion of point B in the middle.

[0025] In the attached diagram: 1. Frame; 2. Separation cylinder; 3. Control assembly; 4. Pretreatment assembly; 5. Air compressor; 6. Separation membrane assembly; 7. Air distribution assembly; 301. Sealing shell; 302. Spring; 303. Sealing plug; 304. Vent hole; 305. Boss; 306. Drive motor; 307. Cam; 701. Mounting rod; 702. Mounting block; 703. Stepper motor; 704. Air distribution plate; 401. Fixing bracket; 402. Heat exchanger; 403. Filter. Detailed Implementation

[0026] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1

[0028] Please see Figure 1-6 This utility model is a membrane separation nitrogen generator, including a frame 1, a separation cylinder 2 is arranged in the inner cavity of the frame 1, a control component 3 is arranged at one end of the separation cylinder 2, a pretreatment component 4 is fixedly connected to one side of the control component 3 through a pipe, an air compressor 5 is fixedly connected to one side of the pretreatment component 4 through a pipe, a separation membrane assembly 6 is arranged in the inner cavity of the separation cylinder 2, a gas equalization component 7 is arranged on one side of the inner cavity of the separation cylinder 2, the control component 3 includes a sealing shell 301, one side of the sealing shell 301 is fixedly connected to one end of the separation cylinder 2 through a pipe, a spring 302 is fixedly connected to the bottom of the inner cavity of the sealing shell 301, a sealing plug 303 is fixedly connected to the top of the spring 302, a vent hole 304 is opened on the surface of the sealing plug 303, a boss 305 is fixedly connected to the top of the sealing plug 303, a drive motor 306 is fixedly connected to the top of the rear side of the inner cavity of the sealing shell 301, and a cam 307 is fixedly connected to the output shaft of the drive motor 306.

[0029] Specifically: When the drive motor 306 is turned on, the output shaft of the drive motor 306 drives the cam 307 to rotate. As the cam 307 rotates, its protruding position on one side intermittently squeezes the boss 305. When the boss 305 is squeezed, it will drive the sealing plug 303 to move downward until the vent hole 304 on the surface of the sealing plug 303 aligns with the through holes on both sides of the sealing shell 301 to form a passage. Air enters the inner cavity of the separator cylinder 2. When the protruding position on one side of the cam 307 is misaligned with the surface of the boss 305, the top of the sealing plug 303 loses the squeezing force and rebounds under the action of the spring 302. The vent hole 304 on the surface of the sealing plug 303 is misaligned with the through holes on both sides of the sealing shell 301. The sealing plug 303 blocks the through holes on both sides of the sealing shell 301. As the sealing plug 303 moves up and down back and forth, air enters the inner cavity of the separator cylinder 2 in a pulse.

[0030] Example 2

[0031] Please see Figure 1-6 Based on Embodiment 1, the gas equalization assembly 7 includes mounting rods 701, one end of which is fixedly connected to the inner wall of the separation cylinder 2. Mounting blocks 702 are fixedly connected between the mounting rods 701. A stepper motor 703 is fixedly connected to one side of the mounting block 702. The output shaft of the stepper motor 703 is fixedly connected to a gas equalization disc 704. A mounting groove is formed on the surface of the cam 307, and a roller is provided in the inner cavity of the mounting groove. An annular guide rail is movably connected to the surface of the gas equalization disc 704. The outer wall of the annular guide rail is fixedly connected to the inner wall of the separation cylinder 2. An oxygen pipe is provided at the top of the separation cylinder 2. A nitrogen pipe is provided at one end of the separator 2. An installation plate is fixedly connected to the end of the oxygen pipe and the nitrogen pipe away from the separator 2. The pretreatment component 4 includes a fixing frame 401. One side of the fixing frame 401 is fixedly connected to one side of the sealing shell 301 through a pipe. A heat exchanger 402 is provided on one side of the inner cavity of the fixing frame 401. A filter 403 is fixedly connected to the other side of the inner cavity of the fixing frame 401. A base plate is fixedly connected to the bottom of the frame 1 and the air compressor 5. A caster wheel is provided at the bottom of the base plate. A support plate is fixedly connected to the inner cavity of the frame 1. The top of the support plate is fixedly connected to the bottom of the separator 2 through a support pad.

[0032] Specifically: Stepper motor 703 is turned on, and its output shaft drives the gas equalization disk 704 to rotate. Airflow is evenly discharged to the separation membrane assembly 6 through the mesh on the surface of the rotating gas equalization disk 704, resulting in better separation. As cam 307 rotates, the roller on one side intermittently contacts the boss 305 on the top of the sealing plug 303. The roller reduces the friction between the surface of cam 307 and the boss 305. The gas equalization disk 704 rotates within the inner cavity of the annular guide rail. The limiting effect of the annular guide rail greatly improves the rotational stability of the gas equalization disk 704, allowing the oxygen tube to distribute... The separated non-nitrogen components are discharged, and the nitrogen pipe discharges the last separated nitrogen. The mounting plates at one end of the oxygen pipe and nitrogen pipe facilitate connection to the external gas pipeline. The air is treated by heat exchanger 402 and filter 403 to remove oil, dust, water and keep the temperature constant. The pre-treated air enters the separator 2 for better separation. The base plate can support the bottom of the frame 1 and the air compressor 5, and the casters at the bottom of the base plate enable the whole device to move. The installation support structure composed of the support plate and support pad can install and fix the separator 2 in the inner cavity of the frame 1.

[0033] The working principle of this utility model is as follows: Air compressor 5 is turned on, and air is delivered to pretreatment component 4. The air undergoes oil removal, dust removal, water removal, and temperature control through heat exchanger 402 and filter 403. Simultaneously, drive motor 306 is turned on, and the output shaft of drive motor 306 drives cam 307 to rotate. As cam 307 rotates, its protruding side intermittently presses against boss 305. When boss 305 is pressed, it causes sealing plug 303 to move downwards until the vent hole 304 on the surface of sealing plug 303 aligns with the through holes on both sides of sealing shell 301, forming a passage. Air then enters the separator. When the protruding part of the cam 307 on one side is misaligned with the surface of the boss 305 in the inner cavity of 2, the top of the sealing plug 303 loses the compressive force and rebounds under the action of the spring 302. The vent hole 304 on the surface of the sealing plug 303 is misaligned with the through holes on both sides of the sealing shell 301. The sealing plug 303 blocks the through holes on both sides of the sealing shell 301. As the sealing plug 303 moves up and down, air enters the inner cavity of the separator 2 in a pulse. Then, the stepper motor 703 is turned on. The output shaft of the stepper motor 703 drives the air distribution plate 704 to rotate. The airflow is evenly discharged to the separator membrane group 6 through the mesh on the surface of the rotating air distribution plate 704.

[0034] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A membrane separation nitrogen generator, comprising a frame (1), characterized in that: The inner cavity of the frame (1) is provided with a separation cylinder (2), one end of the separation cylinder (2) is provided with a control component (3), one side of the control component (3) is fixedly connected to a pretreatment component (4) through a pipe, one side of the pretreatment component (4) is fixedly connected to an air compressor (5) through a pipe, the inner cavity of the separation cylinder (2) is provided with a separation membrane assembly (6), and one side of the inner cavity of the separation cylinder (2) is provided with an air equalization component (7); The control component (3) includes a sealing shell (301), one side of which is fixedly connected to one end of the separation cylinder (2) via a pipe. A spring (302) is fixedly connected to the bottom of the inner cavity of the sealing shell (301), and a sealing plug (303) is fixedly connected to the top of the spring (302). A vent hole (304) is provided on the surface of the sealing plug (303), and a boss (305) is fixedly connected to the top of the sealing plug (303). A drive motor (306) is fixedly connected to the top of the rear side of the inner cavity of the sealing shell (301), and a cam (307) is fixedly connected to the output shaft of the drive motor (306).

2. The membrane separation nitrogen generator according to claim 1, characterized in that: The gas equalization assembly (7) includes a mounting rod (701), one end of which is fixedly connected to the inner wall of the separator (2). A mounting block (702) is fixedly connected between the mounting rods (701). A stepper motor (703) is fixedly connected to one side of the mounting block (702). The output shaft of the stepper motor (703) is fixedly connected to a gas equalization plate (704).

3. The membrane separation nitrogen generator according to claim 1, characterized in that: The surface of the cam (307) is provided with a mounting groove, and a roller is provided in the inner cavity of the mounting groove.

4. The membrane separation nitrogen generator according to claim 2, characterized in that: The surface of the gas equalization plate (704) is movably connected to an annular guide rail, and the outer wall of the annular guide rail is fixedly connected to the inner wall of the separation cylinder (2).

5. The membrane separation nitrogen generator according to claim 1, characterized in that: An oxygen pipe is provided at the top of the separation cylinder (2), and a nitrogen pipe is provided at one end of the separation cylinder (2). The ends of the oxygen pipe and the nitrogen pipe away from the separation cylinder (2) are both fixedly connected to an installation plate.

6. The membrane separation nitrogen generator according to claim 1, characterized in that: The pretreatment component (4) includes a fixing frame (401), one side of which is fixedly connected to one side of the sealing shell (301) via a pipe, a heat exchanger (402) is provided on one side of the inner cavity of the fixing frame (401), and a filter (403) is fixedly connected to the other side of the inner cavity of the fixing frame (401).

7. The membrane separation nitrogen generator according to claim 1, characterized in that: The bottom of both the frame (1) and the air compressor (5) is fixedly connected to a base plate, and the bottom of the base plate is provided with casters.

8. The membrane separation nitrogen generator according to claim 1, characterized in that: The inner cavity of the frame (1) is fixedly connected to a support plate, and the top of the support plate is fixedly connected to the bottom of the separation cylinder (2) through a support pad.

Images