Piston type pressing device for bed layer materials of pressure swing adsorption tower

Abstract

The utility model relates to the technical field of application of chemical equipment, in particular to a piston type pressing device for bed materials of a pressure swing adsorption tower, and aims to solve the problem that in the process of pressing bed material adsorbents in the pressure swing adsorption tower at present, a rigid pressing structure of a sieve plate and an air cylinder is generally adopted; and generally, the sieve plate is extremely easy to roll under the impact of the air flow, and finally, the bed layer material is leaked. According to the device, piston guide frames are additionally arranged on the circumferential sides of an upper sieve plate and a lower sieve plate, and a plurality of rubber piston rings which are tightly arranged are arranged between the piston guide frames and the inner wall of an adsorption tower, so that the upper sieve plate, the lower sieve plate and a sieve mesh are integrally compressed into a bed layer material when being impacted by relatively large air flow; the upper sieve plate, the lower sieve plate and the whole sieve mesh can flexibly shake along with the extension and retraction of the rubber piston ring, so that the phenomena of rollover and the like caused by rigid extrusion and collision of the whole sieve plates and the whole sieve mesh are effectively avoided, and the whole application efficiency of the pressure swing adsorption tower is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical equipment application technical field, concretely relates to a pressure swing adsorption tower bed layer material piston type compression device. BACKGROUND

[0002] The pressure swing adsorption tower is a general equipment for realizing gas separation by adopting the periodic change of gas pressure and flow direction, and the adsorbent placed in the adsorption tower is called bed layer material, the bed layer material is subjected to the impact of the periodic change of the pressure difference of strong gas flow and the up-down flow direction, and thus the bed layer material moves up and down violently, is turbulent and is damaged, and leaks from the top of the adsorption tower, in order to maintain the stability of the bed layer material and reduce the damage and leakage of the material, a screen plate and a gas cylinder are used to form a bed layer material compression device at the top of the adsorption tower. SUMMARY

[0003] The utility model provides a pressure swing adsorption tower bed layer material piston type compression device to solve the problems in the above background.

[0004] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0005] A pressure swing adsorption tower bed layer material piston type compression device, comprising an upper screen plate, a lower screen plate is arranged at the bottom of the upper screen plate, a screen net is detachably arranged between the upper screen plate and the lower screen plate, a piston guide frame is arranged at the top circumference of the upper screen plate, and the outer side walls of the piston guide frame are evenly connected with a plurality of piston rings.

[0006] Further, a plurality of fastening bolts are detachably arranged between the circumferential sides of the upper screen plate and the lower screen plate, and a plurality of hand-pulled lifting rings are further arranged between the upper screen plate and the lower screen plate.

[0007] Further, a plurality of screen holes are matched and correspondingly arranged on the upper screen plate, the lower screen plate and the screen net.

[0008] The utility model has the following beneficial effects:

[0009] The utility model provides a kind of pressure swing adsorption tower bed layer material piston type compaction device, it is mainly by upper and lower screen plate, piston guide frame, piston ring and hand pull ring etc.

[0010] The utility model adopts the design of piston type screen plate structure, so that screen plate has greater soft contact surface with adsorption tower inner wall when slightly moving up and down after being acted on force, can avoid screen plate rollover accident and bed layer material mass leakage, and after piston ring formed by O type rubber or graphite etc. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is overall structure front view schematic drawing of the utility model.

[0012] Fig. 2 It is overall structure plan schematic drawing of the utility model.

[0013] Fig. 3 It is overall structure actual application schematic drawing of the utility model.

[0014] The meaning of the reference signs is as follows:

[0015] 1, upper screen plate;2, screen;3, lower screen plate;4, fastening bolt;5, piston guide frame;6, piston ring;7, welding seam;8, hand pull ring;9, screen hole;10, adsorption tower;11, bed layer material;12, cylinder lever;13, tower top cylinder;14, compaction component. DETAILED DESCRIPTION

[0016] The utility model is further described below in connection with the drawings and specific embodiment.

[0017] As Figs. 1-3 Indicated, a kind of pressure swing adsorption tower bed layer material piston type compaction device, including upper screen plate 1, the bottom of upper screen plate 1 is equipped with lower screen plate 3, and detachably equipped with screen 2 between upper screen plate 1 and lower screen plate 3, and the top circumference of upper screen plate 1 is equipped with piston guide frame 5, and the outer side wall of piston guide frame 5 is evenly connected with multiple piston rings 6.

[0018] A plurality of fastening bolts 4 are detachably arranged between the circumferential sides of the upper sieve plate 1 and the lower sieve plate 3, and a plurality of hand-pulled lifting rings 8 are further arranged between the upper sieve plate 1 and the lower sieve plate 3.

[0019] A plurality of sieve holes 9 are uniformly arranged on the upper sieve plate 1 and the lower sieve plate 3 and correspond to the sieve net 2.

[0020] The piston ring 6 is made of soft material such as rubber or graphite.

[0021] In the specific application, the compression part 14 is placed at the outlet of the adsorption tower 10, and is used to compact and fasten the bed material 11 in the adsorption tower 10. The tower top cylinder 13 is installed on the top of the adsorption tower 10. The cylinder lever 12 of the tower top cylinder 13 is extended and pressed on the piston type bed material compression part 14 under the action of the control program and compressed air. The round hole sieve holes 9 on the upper sieve plate 1 and the lower sieve plate 3 are uniformly distributed as air flow channels. The metal sieve net 2 is placed in the middle of the upper sieve plate 1 and the lower sieve plate 3. The metal sieve net 2 is 80 mesh, which can ensure the normal passage of air flow and block and intercept the leakage of the bed material 11 in the adsorption tower 10.

[0022] When adsorption occurs in the adsorption tower 10, the high-pressure air flow flows upward and impacts the bed material 11 to surge upward. The piston type bed material compression part 14 is upwardly displaced under the impact of the air flow and the bed material 11. At the same time, the piston type bed material compression part 14 is pressed downward by the cylinder lever 12 of the tower top cylinder 13. Therefore, the upward displacement of the piston type bed material compression part 14 is small. At the same time, the small displacement process is smooth and sealed due to the protection of the sliding movement of the piston guide frame 5 and the piston ring 6, so that the leakage of the bed material 11 does not occur during the small displacement process.

[0023] When desorption occurs in the adsorption tower 10, the low-pressure air flow flows downward. Because the air flow pressure is much lower than the compressed air pressure (about 0.7 MPa), the downward force of the cylinder lever 12 of the tower top cylinder 13 is obviously greater than the downward impact force of the air flow. Under the combined action of the cylinder lever 12 and the downward flowing air flow, the piston type bed material compression part 14 is downwardly displaced. Since the bed material 11 is a non-elastic solid substance, the downward displacement of the piston type bed material compression part 14 is small. At the same time, the small displacement process is smooth and sealed due to the protection of the sliding movement of the piston guide frame 5 and the piston ring 6, so that the leakage of the bed material 11 does not occur after the small displacement process.

[0024] The adsorption column 10 continuously occurs in the gas pressure and flow direction of the periodic change of adsorption desorption process, the bed material 11 is therefore subjected to the impact of the flow of strong pressure difference and the periodic change of up and down, the adsorption column 10 installed in the piston type bed material 11 compression component 14 and the tower top cylinder 13 together constitute the bed material 11 compression device, can keep the stability of the bed material 11, reduce the bed material 11 breakage leakage, compression component 14 under the joint action of piston guide frame 5 and piston ring 6, follow the piston reciprocating motion principle mechanism, can follow the adsorption column 10 gas flow impact force and the downward force of cylinder rod 12 and occur slight displacement of reciprocating sliding, so that the upper sieve plate 1 and the lower sieve plate 3 have greater soft contact surface with the inner wall of the adsorption column 10 when moving up and down, thereby greatly avoiding the accident of upper sieve plate 1 and lower sieve plate 3 jamming and overturning and the problem of bed material 11 leakage, therefore, the device has good practicability.

Claims

1. A piston-type compacting device for bed materials in a pressure swing adsorption tower, characterized by: The invention comprises an upper sieve plate (1), a lower sieve plate (3) is provided at the bottom of the upper sieve plate (1), a detachable screen (2) is provided between the upper sieve plate (1) and the lower sieve plate (3), a piston guide (5) is provided on the top circumference of the upper sieve plate (1), and a plurality of piston rings (6) are evenly distributed and connected to the outer wall of the piston guide (5).

2. The piston-type compacting device for bed material of a pressure swing adsorption tower according to claim 1, characterized in that: A plurality of fastening bolts (4) are detachably provided between the circumferential sides of the upper sieve plate (1) and the lower sieve plate (3), and a plurality of hand-pulling rings (8) are also provided between the upper sieve plate (1) and the lower sieve plate (3).

3. The piston-type compacting device for bed material of a pressure swing adsorption tower according to claim 2, characterized in that: The upper sieve plate (1) and the lower sieve plate (3) are each provided with a plurality of sieve holes (9) in a matching manner with the sieve mesh (2).

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