Twin-tower type nitrogen making equipment

Abstract

The utility model discloses double-tower type nitrogen making equipment which comprises two adsorption towers, a connecting block is arranged at the upper ends of the two adsorption towers, an air inlet pipe is arranged at the upper end of the connecting block, a waste discharge pipe is arranged at the right ends of the adsorption towers, an exhaust pipe is arranged at the left ends of the adsorption towers, a nitrogen collection tower is arranged at the left ends of the two exhaust pipes, and sliding grooves are symmetrically formed in the inner walls of the adsorption towers. A mounting ring is slidably connected into the adsorption tower, the side surface of the mounting ring is fixedly connected with the sliding block, the upper end of the mounting ring is symmetrically provided with positioning blocks, the upper end of the mounting ring is provided with a filter plate, the side surface of the filter plate is symmetrically provided with positioning notches, and the upper end of the mounting ring is provided with an annular cover. The filter plate can be automatically cleaned, the service life of the filter plate is prolonged, meanwhile, the replacement time of the filter plate can be accurately mastered, the filter plate can be replaced in time, and normal operation of filtering work is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of nitrogen production equipment, in particular to a double-tower nitrogen production equipment. Background Technique

[0002] Nitrogen production equipment uses air as raw material, molecular sieve as adsorbent, and applies the principle of pressure swing adsorption. The method of separating nitrogen and oxygen by selective adsorption of oxygen and nitrogen by molecular sieve is called PSA nitrogen production. PSA is a new gas separation technology with the characteristics of environmental friendliness, low cost, and high efficiency. Its principle is to utilize the difference in the "adsorption" performance of molecular sieve for different gas molecules to separate the gas mixture, so as to obtain high-concentration nitrogen.

[0003] The Chinese patent discloses a double-tower nitrogen production equipment (authorization announcement number CN 220405210 U). The weight of the filter screen detected by the weighing sensor in this patented technology will change. Staff can intuitively understand the usage status of the filter screen through the weighing sensor. However, when the surface of the filter screen is covered with dust and affects filtration, the surface of the filter screen can be cleaned with a brush to make the filter plate unobstructed and extend the service life of the filter plate. However, it does not have an automatic cleaning mechanism for the filter plate. When cleaning the filter screen, it requires staff to clean it manually, which is very troublesome. Therefore, technical personnel in this field provide a double-tower nitrogen production equipment to solve the problems raised in the above background technique. Content of the Utility Model

[0004] To solve the above technical problems, the utility model provides a double-tower nitrogen production equipment, which includes two adsorption towers. A connecting block is installed at the upper ends of the two adsorption towers. An inlet pipe is installed at the upper end of the connecting block. A waste discharge pipe is installed at the right end of the adsorption tower. An exhaust pipe is installed at the left end of the adsorption tower. A nitrogen collection tower is installed at the left ends of the two exhaust pipes.

[0005] Chutes are symmetrically opened on the inner wall of the adsorption tower. Sliders are slidably connected inside the chutes. Springs are installed at the lower ends of the sliders. An installation ring is slidably connected inside the adsorption tower. The side surface of the installation ring is fixedly connected to the slider. Positioning blocks are symmetrically installed at the upper end of the installation ring. A filter plate is arranged at the upper end of the installation ring. Positioning notches are symmetrically opened on the side surface of the filter plate. A circular cover is arranged at the upper end of the installation ring, and the circular cover covers outside the filter plate.

[0006] A fixing plate is arranged at the central position inside the circular cover. A motor is installed at the upper end of the fixing plate. A rotating shaft is installed at the lower end of the motor. A cleaning brush is installed on the side surface of the rotating shaft, and the cleaning brush contacts the upper end of the filter plate. A trigger switch is installed on the inner wall of the adsorption tower, and the trigger switch is located below the installation ring. The trigger switch is externally connected to a controller and a motor.

[0007] Preferably: Four threaded grooves are symmetrically opened at the upper end of the installation ring.

[0008] Preferably, the diameter of the filter plate is larger than the inner diameter of the mounting ring and smaller than the diameter of the mounting ring.

[0009] Preferably, the cross-section of the annular cover is L-shaped.

[0010] Preferably, four fastening bolts are symmetrically arranged inside the annular cover, and the fastening bolts correspond to the positions of the threaded grooves.

[0011] Preferably, support rods are symmetrically installed on the side surface of the fixing plate, and the support rods are fixedly connected to the annular cover.

[0012] Technical effects and advantages of the present utility model:

[0013] The present utility model can automatically clean the filter plate, extend the service life of the filter plate. At the same time, it can accurately master the replacement time of the filter plate, replace the filter plate in time, and ensure the normal progress of the filtering work. Description of the drawings

[0014] Figure 1 is the structural schematic diagram of the present application;

[0015] Figure 2 is the structural schematic diagram of the adsorption tower of the present application;

[0016] Figure 3 is the structural schematic diagram of the mounting ring, filter plate and annular cover of the present application;

[0017] In the figure:

[0018] 1, adsorption tower; 2, connection block; 3, intake pipe; 4, waste discharge pipe; 5, exhaust pipe; 6, nitrogen collection tower; 7, chute; 8, slider; 9, spring;

[0019] 10, mounting ring; 11, threaded groove; 12, positioning block; 13, filter plate; 14, positioning notch; 15, annular cover; 16, fastening bolt; 17, fixing plate; 18, support rod; 19, motor;

[0020] 20, rotating shaft; 21, cleaning brush; 22, trigger switch. Detailed implementation manners

[0021] The present utility model will be further described in detail below in conjunction with the drawings and specific implementation manners. The embodiments of the present utility model are given for the purpose of illustration and description, and are not exhaustive or limit the present utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model and thus design various embodiments with various modifications suitable for specific purposes.

[0022] Please refer to Figures 1 to 3 , in this embodiment, a double-tower nitrogen production device is provided, including two adsorption towers 1. A connecting block 2 is installed at the upper ends of the two adsorption towers 1. An intake pipe 3 is installed at the upper end of the connecting block 2. A waste discharge pipe 4 is installed at the right end of the adsorption tower 1. An exhaust pipe 5 is installed at the left end of the adsorption tower 1. A nitrogen collection tower 6 is installed at the left ends of the two exhaust pipes 5. Slide grooves 7 are symmetrically formed on the inner wall of the adsorption tower 1. Sliders 8 are slidably connected inside the slide grooves 7. Springs 9 are installed at the lower ends of the sliders 8. An installation ring 10 is slidably connected inside the adsorption tower 1. The side surface of the installation ring 10 is fixedly connected to the slider 8. Four threaded grooves 11 are symmetrically formed at the upper end of the installation ring 10. Positioning blocks 12 are symmetrically installed at the upper end of the installation ring 10. A filter plate 13 is arranged at the upper end of the installation ring 10. The diameter of the filter plate 13 is larger than the inner diameter of the installation ring 10, and the diameter of the filter plate 13 is smaller than the diameter of the installation ring 10. Positioning notches 14 are symmetrically formed on the side surface of the filter plate 13. A circular cover 15 is arranged at the upper end of the installation ring 10, and the circular cover 15 covers the outside of the filter plate 13. The cross-section of the circular cover 15 is L-shaped. Four fastening bolts 16 are symmetrically arranged inside the circular cover 15, and the positions of the fastening bolts 16 correspond to the threaded grooves 11. A fixing plate 17 is arranged at the central position inside the circular cover 15. Support rods 18 are symmetrically installed on the side surface of the fixing plate 17, and the support rods 18 are fixedly connected to the circular cover 15. A motor 19 is installed at the upper end of the fixing plate 17. A rotating shaft 20 is installed at the lower end of the motor 19. A cleaning brush 21 is installed on the side surface of the rotating shaft 20, and the cleaning brush 21 contacts the upper end of the filter plate 13. A trigger switch 22 is installed on the inner wall of the adsorption tower 1, and the trigger switch 22 is located below the installation ring 10. The trigger switch 22 is externally connected to a controller and the motor 19.

[0023] The working principle of the present utility model is as follows: Gas enters the adsorption tower 1 through the intake pipe 3, and the dust is filtered by the filter plate 13. When the filter plate 13 is blocked by dust and affects the filtration rate, the blowing pressure of the gas on the filter plate 13 increases, causing the filter plate 13 to push the installation ring 10 and the slider 8 to descend and compress the spring 9. When the installation ring 10 descends and presses the trigger switch 22, the trigger switch 22 controls the alarm to emit an alarm sound. At the same time, the trigger switch 22 controls the motor 19 to work. The motor 19 drives the cleaning brush 21 to rotate on the upper surface of the filter plate 13 through the rotating shaft 20, and the dust on the upper surface of the filter plate 13 is cleaned by the cleaning brush 21 to ensure the smoothness of the filter plate 13. When the filter plate 13 is smooth, the pressure on the filter plate 13 decreases, and the spring 9 pushes the installation ring 10 to rise away from the trigger switch 22, and the alarm and the motor 19 stop working;

[0024] When the alarm sounds for a short time, the staff does not need to replace the filter plate 13. When the alarm sounds for a long time, it means that only cleaning the filter plate 13 by the cleaning brush 21 cannot make the filter plate 13 smooth, so the staff needs to replace a new filter plate 13;

[0025] When replacing the filter plate 13, unscrew the fastening bolt 16 from the threaded groove 11, lift up the annular cover 15, take out the filter plate 13 and replace it with a new one. Then, install the annular cover 15 to complete the replacement of the filter plate 13.

[0026] Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art and related fields based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model. The structures, devices, and operation methods not specifically described and explained in the present utility model shall be implemented by conventional means in the art without special instructions and limitations.

Claims

1. A double-tower nitrogen production equipment, comprising two adsorption towers (1), characterized in that: A connecting block (2) is installed on the upper ends of the two adsorption towers (1), an air inlet pipe (3) is installed on the upper end of the connecting block (2), a waste pipe (4) is installed on the right end of the adsorption tower (1), an exhaust pipe (5) is installed on the left end of the adsorption tower (1), and a nitrogen collection tower (6) is installed on the left ends of the two exhaust pipes (5); The inner wall of the adsorption tower (1) is symmetrically provided with a slide groove (7), the slide groove (7) is slidably connected to a slider (8), a spring (9) is installed at the lower end of the slider (8), the adsorption tower (1) is slidably connected to a mounting ring (10) inside, and the side of the mounting ring (10) is fixedly connected to the slider (8), a positioning block (12) is symmetrically installed at the upper end of the mounting ring (10), a filter plate (13) is arranged at the upper end of the mounting ring (10), and positioning notches (14) are symmetrically provided on the side of the filter plate (13), an annular cover (15) is arranged at the upper end of the mounting ring (10), and the annular cover (15) covers the outside of the filter plate (13); A fixing plate (17) is arranged at the center position in the annular cover (15), a motor (19) is installed on the upper end of the fixing plate (17), a rotating shaft (20) is installed on the lower end of the motor (19), a cleaning brush (21) is installed on the side of the rotating shaft (20), and the cleaning brush (21) contacts the upper end of the filter plate (13), a trigger switch (22) is installed on the inner wall of the adsorption tower (1), and the trigger switch (22) is located below the mounting ring (10), and the trigger switch (22) is externally connected to a controller and the motor (19).

2. A double-tower nitrogen production equipment according to claim 1, characterized in that: Four thread grooves (11) are symmetrically formed on the upper end of the mounting ring (10).

3. A double-tower nitrogen production equipment according to claim 1, characterized in that: The diameter of the filter plate (13) is larger than the inner diameter of the mounting ring (10), and the diameter of the filter plate (13) is smaller than the diameter of the mounting ring (10).

4. A double-tower nitrogen production equipment according to claim 1, characterized in that: The cross section of the annular cover (15) is L-shaped.

5. A double-tower nitrogen production equipment according to claim 1, characterized in that: Four fastening bolts (16) are symmetrically arranged inside the annular cover (15), and the positions of the fastening bolts (16) correspond to the positions of the thread grooves (11).

6. A double-tower nitrogen production equipment according to claim 1, characterized in that: The supporting rods (18) are symmetrically mounted on the sides of the fixing plate (17), and the supporting rods (18) are fixedly connected to the annular cover (15).

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