Carbon molecular sieve filling jig of nitrogen making machine
By designing a carbon molecular sieve loading fixture for nitrogen making machines, using the radial stop rod in the mixing device to spread and evenly distribute the carbon molecular sieve, the problems of low loading efficiency, poor uniformity and high cost in the prior art are solved, and a uniform and compact loading effect is achieved and the cost is reduced.
Patent Information
- Application Number
- CN202422035925.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-21
AI Technical Summary
In the prior art, carbon molecular sieve has low loading efficiency, poor uniformity in the nitrogen-making machine adsorption cylinder, and is prone to damage due to extrusion, and has a high cost.
A carbon molecular sieve filling fixture for nitrogen-making machines is designed, including a hopper, a mixing device and an adsorption cylinder. A multiple radial stop rods are provided in the mixing device, and the carbon molecular sieve is blocked and dispersed through these rods to make it evenly distributed in the adsorption cylinder.
The uniform and compact loading of carbon molecular sieve is achieved, which avoids damage to carbon molecular sieve, simplifies loading operations, reduces costs, and is suitable for a large number of applications.
Smart Images
Figure CN222984055U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of nitrogen production equipment, and particularly relates to a carbon molecular sieve loading fixture for a nitrogen generator. Background Art
[0002] A nitrogen generator is a device that separates oxygen and nitrogen in the air through membrane separation technology. In a nitrogen generator, carbon molecular sieve is one of the key components. When the carbon molecular sieve is filled into a special adsorption cylinder, when compressed air passes through the adsorption cylinder, oxygen, carbon dioxide and moisture in the compressed air are adsorbed by the carbon molecular sieve, and clean nitrogen can be obtained. In order to ensure the efficiency and stability of nitrogen production, the loading of carbon molecular sieve in the adsorption cylinder is an important process.
[0003] At present, there are mainly three methods for filling carbon molecular sieve. The first is the manual addition method, in which the carbon molecular sieve is added into the adsorption cylinder one bucket by one bucket manually. The advantage is high controllability, which can avoid excessive extrusion of the molecular sieve and ensure uniform filling of the molecular sieve. The disadvantage is very low efficiency, and it requires a large amount of manpower and time. The second is the vibration filling method, in which the molecular sieve is filled into the adsorption cylinder by vibration. Although the efficiency is relatively high, the filling is not uniform and the molecular sieve is easily damaged. The third is the pressure filling method, in which the molecular sieve is compressed to the bottom of the adsorption cylinder by compressed nitrogen. Although this method can avoid damage to the molecular sieve and the filling is relatively uniform, the disadvantage is that it requires nitrogen and compressed air, and the cost is relatively high. Summary of the Utility Model
[0004] In view of the above problems and technical requirements, the utility model provides a carbon molecular sieve loading fixture for a nitrogen generator, which is used to fill a quantitative carbon molecule into the adsorption cylinder of the nitrogen generator. The fixture can make the loading of carbon molecular sieve more uniform and compact, avoid damage to carbon molecules, the loading operation is simple, and the cost is not increased, which is suitable for a large number of applications.
[0005] The technical solution of the utility model is as follows: A carbon molecular sieve loading fixture for a nitrogen generator includes a hopper, a mixing device and an adsorption cylinder. The hopper is of a cylindrical structure, and a through hole is provided at the bottom of the hopper. The mixing device is fixedly connected to the lower part of the hopper directly opposite to the through hole, and the mixing device is correspondingly inserted into the top of the adsorption cylinder. Pour the carbon molecular sieve into the hopper, and the carbon molecular sieve enters the mixing device through the through hole. The mixing device can disperse the carbon molecular sieve and then pour it into the lower adsorption cylinder; a plurality of radial baffle rods are arranged in the mixing device. After the carbon molecular sieve falls from the through hole, through the blocking of the radial baffle rods, the falling speed can be reduced, and at the same time, the falling direction can be changed. The carbon molecular sieve spreads uniformly along the cylinder diameter in the upper part of the adsorption cylinder and continues to fall, and the stacking speed at each part along the radial direction in the lower part of the adsorption cylinder remains the same.
[0006] Further, the mixing device includes a cylinder body and radial baffle rods. The upper end of the cylinder body is welded to the bottom of the hopper. The through-hole of the hopper is directly opposite to the center of the cylinder body. A plurality of radial baffle rods are axially connected in the cylinder body. The radial baffle rods include cross-set horizontal rods and vertical rods. The horizontal rods are parallel to each other, and the horizontal rods and vertical rods are perpendicular to each other. Each horizontal rod and vertical rod passes through the central axis of the cylinder body.
[0007] Further, the cross-sections of the horizontal rods and vertical rods are circles with equal diameters. Both ends of the horizontal rods and vertical rods are fixedly welded to the inner wall of the cylinder body. The diameters of the horizontal rods and vertical rods are larger than the particle size of the carbon molecular sieve.
[0008] Further, a circle of outer retaining rings is provided on the outer peripheral surface of the cylinder body. The outer retaining rings are arranged at the lower part of the cylinder body and are welded to the cylinder body.
[0009] Further, the upper part of the hopper is cylindrical and the lower part is inverted conical. The through-hole is arranged at the top of the inverted cone.
[0010] Further, the diameter of the through-hole of the hopper is 1 / 5 - 1 / 6 of the diameter of the cylinder body.
[0011] Further, the adsorption cylinder is cylindrical. A plurality of reinforcing ribs are provided on the outer periphery of the adsorption cylinder. When the mixing device is sleeved on the adsorption cylinder, the outer retaining ring blocks the upper edge of the adsorption cylinder to form a support for the cylinder body of the mixing device.
[0012] Further, both the hopper and the mixing device are made of stainless steel.
[0013] The beneficial effects of the present utility model: By arranging a mixing device at the bottom of the hopper, this loading jig can disperse and reduce the speed of the carbon molecular sieve falling from the through-hole of the hopper. Since the diameter of the through-hole is small, if the mixing device is not arranged, the carbon molecular sieve directly falling from the through-hole to the bottom of the adsorption cylinder will pile up in the middle of the adsorption cylinder. The concentrated carbon molecules are easily damaged during the high-speed falling and extrusion process, and the filling is uneven. After the mixing device is arranged, the cross-set horizontal rods and vertical rods can block the carbon molecular sieve to a certain extent, reduce the initial speed of the vertically falling carbon molecular sieve, and at the same time change the falling path of the carbon molecular sieve, changing from vertical downward to parabolic downward obliquely. The mixing device disperses and distributes the dense columnar molecular sieve flow. Therefore, the carbon molecular sieve can fall in a state of low density, low speed, and covering the entire diameter of the adsorption cylinder, with more uniform filling. The carbon molecular sieves will not be damaged due to extrusion, and the filling effect is good. In addition, this jig has a simple structure, convenient operation, low manufacturing cost, does not require the cooperation of additional tools during the loading stage, has high loading controllability, good economy, and is suitable for wide application. Description of the Drawings
[0014] Figure 1 It is the loading diagram of the carbon molecular sieve loading jig of the present utility model for nitrogen generators;
[0015] Figure 2 This is the bottom structure diagram of the hopper and the mixing device in the present utility model;
[0016] Figure 3 This is the top structure diagram of the hopper and the mixing device in the present utility model;
[0017] Figure 4 This is the axial sectional structure diagram of the hopper and the mixing device in the present utility model;
[0018] The markings in the figure are: hopper 1, through hole 11, mixing device 2, cylinder body 3, outer retaining ring 4, radial baffle rod 5, cross bar 51, longitudinal rod 52, adsorption cylinder 6, reinforcing rib 61. Specific embodiments
[0019] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0020] As Figures 1-4 shown, the nitrogen generator carbon molecular sieve loading jig of the present utility model includes a hopper 1, a mixing device 2 and an adsorption cylinder 6. The hopper 1 is of a cylindrical structure. A through hole 11 is provided at the bottom of the hopper 1. The mixing device 2 is fixedly connected below the hopper 1 facing the through hole 11. The mixing device 2 is correspondingly inserted into the top of the adsorption cylinder 6. Carbon molecular sieve is poured into the hopper 1, and the carbon molecular sieve enters the mixing device 2 through the through hole 11. The mixing device 2 can disperse the carbon molecular sieve and then pour it into the lower adsorption cylinder 6.
[0021] The mixing device 2 includes a cylinder body 3 and radial baffle rods 5. The upper end of the cylinder body 3 is welded to the bottom of the hopper 1. The through hole 11 of the hopper is facing the center of the cylinder body 3. A plurality of radial baffle rods 5 are axially connected in the cylinder body 3. The radial baffle rods 5 include cross bars 51 and longitudinal rods 52 arranged crosswise. The cross bars 51 are parallel to each other, and the cross bars 51 and the longitudinal rods 52 are perpendicular to each other. Each cross bar 51 and longitudinal rod 52 passes through the central axis of the cylinder body. A plurality of radial baffle rods 5 are provided in the mixing device 2. After the carbon molecular sieve falls from the through hole, through the blocking of the radial baffle rods 5, the falling speed can be reduced, and at the same time, the falling direction can be changed. The carbon molecular sieve is evenly dispersed along the cylinder diameter at the upper part of the adsorption cylinder 6 and continuously falls, and the stacking speed at each part along the radial direction at the lower part of the adsorption cylinder 6 remains the same.
[0022] By arranging a mixing device 2 at the bottom of the hopper 1, the carbon molecular sieve falling from the through hole 11 of the hopper can be dispersed and decelerated. Since the diameter of the through hole 11 is small, if the mixing device 2 is not arranged, the carbon molecular sieve directly falling from the through hole 11 to the bottom of the adsorption cylinder 6 will pile up in the middle of the adsorption cylinder 6. The carbon molecules concentrated together are easily damaged during the high-speed falling and extrusion process, and the filling is uneven. After the mixing device 2 is arranged, the cross bars 51 and the longitudinal bars 52 arranged alternately can block the carbon molecular sieve to a certain extent, reduce the initial speed of the vertically falling carbon molecular sieve, and at the same time change the falling path of the carbon molecular sieve, changing from vertical downward to parabolic downward obliquely. The mixing device disperses and distributes the dense columnar molecular sieve flow. Therefore, the carbon molecular sieve can fall in a state of low density, low speed, and covering the entire diameter of the adsorption cylinder, and the filling is more uniform.
[0023] The cross sections of the cross bars 51 and the longitudinal bars 52 are circles with equal diameters. Both ends of the cross bars 51 and the longitudinal bars 52 are fixedly welded to the inner wall of the cylinder body 3. The diameters of the cross bars 51 and the longitudinal bars 52 are larger than the particle size of the carbon molecular sieve. The consistent specifications of the cross bars 51 and the longitudinal bars 52 can ensure the uniformity of dispersion, and the thicker rod bodies have better dispersion effects.
[0024] A circle of outer retaining rings 4 is arranged on the outer peripheral surface of the cylinder body. The outer retaining rings 4 are arranged at the lower part of the cylinder body, and the outer retaining rings 4 are welded to the cylinder body 3. The adsorption cylinder 6 is cylindrical, and a plurality of reinforcing ribs 61 are arranged on the outer periphery of the adsorption cylinder 6. When the mixing device 2 is sleeved on the adsorption cylinder 6, the outer retaining rings 4 block the upper edge of the adsorption cylinder 6 to form a support for the cylinder body 3 of the mixing device.
[0025] Both the hopper 1 and the mixing device 2 are made of stainless steel. The upper part of the hopper 1 is cylindrical, and the lower part is inverted conical. The through hole 11 is arranged at the top of the inverted cone. The diameter of the through hole 11 of the hopper is 1 / 5 - 1 / 6 of the diameter of the cylinder body.
[0026] The working principle of the present utility model: Pour a certain amount of carbon molecular sieve into the hopper 1. The carbon molecular sieve falls downward from the through hole 11. When the carbon molecular sieve falls, it is blocked layer by layer by a plurality of radial baffle rods 5, so that the carbon molecular sieve changes the vertical falling direction and scatters obliquely downward. Since the carbon molecular sieve falls vertically from the central through hole 11, the falling path coincides with the intersection of the cross bars 51 and the longitudinal bars 52. Therefore, the plurality of radial baffle rods 5 arranged horizontally and vertically enhance the blocking and dispersion effects on the carbon molecular sieve, avoid damage to the carbon molecular sieve, make the carbon molecular sieve loaded evenly, the loading effect is more compact, improve the efficiency, and save the loading cost.
[0027] As described above, only several preferred embodiments of the present utility model are provided, but the protection scope of the present utility model is not limited thereto. Any changes and substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.
Claims
1. A nitrogen generator carbon molecular sieve filling fixture, characterized in that: It includes a hopper, a mixing device and an adsorption cylinder. The hopper is a cylinder-shaped structure. A through hole is provided at the bottom of the hopper. The mixing device is fixedly connected to the bottom of the hopper facing the through hole. The mixing device is correspondingly plugged into the top of the adsorption cylinder. The carbon molecular sieve is poured into the hopper and enters the mixing device through the through hole. The mixing device can break up the carbon molecular sieve and pour it into the adsorption cylinder below. A plurality of radial blocking rods are provided in the mixing device. After the carbon molecular sieve falls from the through hole, it is blocked by the radial blocking rods to reduce the falling speed and change the falling direction at the same time. The carbon molecular sieve is evenly spread along the cylinder diameter at the upper part of the adsorption cylinder and continues to fall. The speed of the stacking at various radial locations at the lower part of the adsorption cylinder remains consistent.
2. A carbon molecular sieve filling fixture for a nitrogen generator according to claim 1, characterized in that: The mixing device includes a cylinder and radial material blocking rods. The upper end of the cylinder is welded to the bottom of the hopper. The through hole of the hopper is opposite to the center of the cylinder. Multiple radial material blocking rods are axially connected in the cylinder. The radial material blocking rods include cross-arranged cross bars and longitudinal bars. The cross bars are parallel to each other, and the cross bars and longitudinal bars are perpendicular to each other. Each cross bar and longitudinal bar passes through the central axis of the cylinder.
3. A carbon molecular sieve filling fixture for a nitrogen generator according to claim 2, characterized in that: The cross sections of the horizontal rod and the vertical rod are circles with equal diameters. Both ends of the horizontal rod and the vertical rod are fixedly welded to the inner wall of the cylinder. The diameters of the horizontal rod and the vertical rod are larger than the particle size of the carbon molecular sieve.
4. A nitrogen generator carbon molecular sieve filling fixture according to claim 3, characterized in that: An outer retaining ring is arranged on the outer peripheral surface of the cylinder, the outer retaining ring is arranged at the lower part of the cylinder, and the outer retaining ring is welded to the cylinder.
5. A carbon molecular sieve filling fixture for a nitrogen generator according to claim 4, characterized in that: The upper part of the hopper is cylindrical, the lower part is inverted cone shape, and the through hole is arranged at the top of the inverted cone.
6. A carbon molecular sieve filling fixture for a nitrogen generator according to claim 5, characterized in that: The diameter of the hopper through hole is 1 / 5-1 / 6 of the cylinder diameter.
7. A carbon molecular sieve filling fixture for a nitrogen generator according to claim 6, characterized in that: The adsorption cylinder is cylindrical, and a plurality of reinforcing convex strips are arranged on the outer periphery of the adsorption cylinder. When the mixing device is sleeved on the adsorption cylinder, the outer retaining ring blocks the upper edge of the adsorption cylinder to support the cylinder body of the mixing device.
8. A carbon molecular sieve filling fixture for a nitrogen generator according to claim 7, characterized in that: The hopper and the mixing device are both made of stainless steel.