Demister for air separation device

Abstract

The utility model relates to the technical field of air separation devices, in particular to a demister for an air separation device, which comprises a demister body, the demister body is applied to an evaporator, the inner wall of the evaporator is fixedly connected with a support block, the inner side of the evaporator is provided with a demister body, and the demister body is lapped on the upper surface of the support block. Through rotation of the worm, the gear can rotate under the action of the worm, the rotating rod drives the scraping plate to rotate, the scraping plate rotates and rubs the lower surface of the first silk screen plate, foam on the first silk screen plate can be broken, attachment of the foam on the first silk screen plate can be reduced, and the service life of the first silk screen plate is prolonged. The foam can be better separated from dropping liquid, the defoaming efficiency and effect can be improved, meanwhile, a second silk screen plate can rotate along with the second silk screen plate under the action of a rotating rod, overlapping and dislocation of holes of the second silk screen plate and holes of a first silk screen plate are achieved through rotation of the second silk screen plate, and the foam can be better broken.

Description

Technical Field

[0001] The utility model relates to the technical field of air separation devices, in particular to a defoamer for air separation devices. Background Art

[0002] The air separation unit is a set of industrial equipment used to separate the various gas components in the air and produce oxygen, nitrogen, argon and other gases of the air components. The most commonly used air separation method is cryogenic distillation. The cryogenic separation method converts air into liquid by deep freezing through compression cycle. After cryogenic distillation, oxygen, nitrogen, argon and other inert gases are gradually separated and produced from liquid air according to different boiling points. The equipment is widely used in traditional metallurgy, new coal chemical industry, large-scale nitrogen fertilizer, professional gas supply and other fields. When using the air separation unit, in order to remove the foam and droplets generated during the separation process, a demister is usually required for defoaming. The demister is a defoaming device used in the air separation unit, which is mainly used to remove the foam and droplets generated during the separation process to prevent the foam from accumulating and the droplets from clogging the equipment pipeline. The use of the demister can ensure the normal operation of the device and the product quality, while reducing maintenance costs and environmental safety risks.

[0003] In the prior art, when a demister is used, foam and liquid droplets are generally separated by a wire mesh. Since the foam cannot be broken well, the foam is easily adhered to the wire mesh, which in turn affects the speed of separation of foam and liquid droplets, thereby reducing the efficiency and effect of defoaming. Therefore, in order to solve the above problem, a demister for an air separation device is proposed. Utility Model Content

[0004] The utility model aims to provide a demister for an air separation device, so as to solve the problem in the prior art mentioned in the above background technology that the foam cannot be broken well, so that the foam is easily adhered to the wire mesh, which in turn affects the speed of separation of foam and droplets, thereby reducing the efficiency and effect of defoaming.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a demister for an air separation device, comprising a body, the body being applied to an evaporator, the inner wall of the evaporator being fixedly connected with a support block, a demister body being arranged on the inner side of the evaporator, the demister body being overlapped on the upper surface of the support block, a first wire mesh plate being fixedly connected to the inner side of the demister body, and a second wire mesh plate being movably connected to the inner side of the demister body;

[0006] A crushing mechanism is arranged on the inner side of the demister body, and the crushing mechanism includes a worm, and the worm is movably connected to the inner side of the demister body. A motor is fixedly installed on the surface of the demister body, and a rotating rod is movably connected to the inner side of the demister body. A gear is fixedly connected to the top end of the rotating rod, and a scraper is fixedly connected to the bottom end of the rotating rod.

[0007] Preferably, the crushing mechanism also includes a limiting sleeve, the limiting sleeve is fixedly connected to the inner wall of the demister body, the rotating rod is movably connected to the inner side of the limiting sleeve, the surface of the second wire mesh plate is fixedly connected with a connecting block, and the inner wall of the demister body is provided with a rotating groove.

[0008] Preferably, the worm is fixedly connected to the output end of the motor, the rotating rod is fixedly connected to the second wire mesh plate, and the rotating rod is movably connected to the inner side of the first wire mesh plate.

[0009] Preferably, the connection blocks are in groups of four and fixedly connected to the second wire mesh plate, and one end of the connection block away from the second wire mesh plate is movably connected to the rotating groove.

[0010] Preferably, the surface of the evaporator is provided with a disassembly and assembly mechanism, the disassembly and assembly mechanism includes a mounting block, the mounting block is fixedly connected to the surface of the demister body, the surface of the evaporator is provided with a mounting groove, the inner side of the evaporator is provided with a movable groove, the inner side of the movable groove is movably connected with a pull rod, the surface of the pull rod is fixedly connected with an insert block, the surface of the mounting block is provided with a slot, the surface of the insert block is fixedly connected with a spring, and the surface of the demister body is fixedly connected with a rubber pad.

[0011] Preferably, the insert block is movably connected to the inner side of the movable groove, one end of the spring is fixedly connected to the movable groove, and the other end of the spring is fixedly connected to the insert block.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] Through the rotation of the worm, the gear can rotate under the action of the worm, and the rotating rod can drive the scraper to rotate. The rotation of the scraper and the friction with the lower surface of the first screen plate can break the foam on the first screen plate, reduce the adhesion of foam on the first screen plate, and make the foam better separated from the droplets, thereby improving the efficiency and effect of foam removal. At the same time, the second screen plate will rotate accordingly under the action of the rotating rod. The rotation of the second screen plate can achieve the overlap and misalignment of its holes with the holes of the first screen plate, which can better break the foam, thereby helping to improve the effect of foam removal.

[0014] By engaging and separating the plug block and the slot, the demister body and the evaporator can be fixed or unfixed, which makes it easy to disassemble and assemble the demister body, thereby facilitating replacement or cleaning of the demister body and ensuring the foam removal effect of the demister body. At the same time, through the provision of the rubber pad, the rubber pad can fit tightly against the surface of the evaporator during the engagement of the plug block and the slot, thereby achieving sealing of the demister body during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic cross-sectional front view of the structure of the utility model;

[0016] Figure 2 For this utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0017] Figure 3 It is a schematic top view and cross-sectional view of the structure of the worm and the gear of the utility model;

[0018] Figure 4 It is a schematic top view and cross-sectional view of the structure of the second wire mesh plate and the connecting block of the utility model.

[0019] In the figure: 1. evaporator; 11. support block; 12. demister body; 13. first screen plate; 14. second screen plate; 2. worm; 21. motor; 22. limit sleeve; 23. rotating rod; 24. gear; 25. scraper; 26. connecting block; 27. rotating groove; 3. mounting block; 31. mounting groove; 32. movable groove; 33. pull rod; 34. plug block; 35. slot; 36. spring; 37. rubber pad. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 , an embodiment provided by the utility model:

[0022] A demister for an air separation device comprises a body, which is applied to an evaporator 1. A support block 11 is fixedly connected to the inner wall of the evaporator 1. A demister body 12 is arranged on the inner side of the evaporator 1. The demister body 12 is overlapped on the upper surface of the support block 11. A first wire mesh plate 13 is fixedly connected to the inner side of the demister body 12. A second wire mesh plate 14 is movably connected to the inner side of the demister body 12. The demister body 12 can be supported by the arrangement of the support block 11. The foam and liquid droplets generated in the air separation process can be removed by the arrangement of the first wire mesh plate 13 and the second wire mesh plate 14.

[0023] A crushing mechanism is provided on the inner side of the demister body 12, and the crushing mechanism includes a worm 2, which is movably connected to the inner side of the demister body 12, and a motor 21 is fixedly installed on the surface of the demister body 12. A rotating rod 23 is movably connected to the inner side of the demister body 12, and a gear 24 is fixedly connected to the top of the rotating rod 23, and a scraper 25 is fixedly connected to the bottom end of the rotating rod 23. Through the rotation of the worm 2, the gear 24 can rotate and the rotating rod 23 can drive the scraper 25 to rotate, so that the scraper 25 can crush the foam under the first wire mesh plate 13, so as to better remove the foam.

[0024] Furthermore, the crushing mechanism also includes a limit sleeve 22, the limit sleeve 22 is fixedly connected to the inner wall of the demister body 12, the rotating rod 23 is movably connected to the inner side of the limit sleeve 22, the surface of the second wire mesh plate 14 is fixedly connected with a connecting block 26, and the inner wall of the demister body 12 is provided with a rotating groove 27. Through the setting of the limit sleeve 22, the rotation of the rotating rod 23 can be limited, and the rotating rod 23 can be prevented from deviating during the rotation process, thereby facilitating the scraper 25 to stably remove the foam.

[0025] Furthermore, the worm 2 is fixedly connected to the output end of the motor 21, the rotating rod 23 is fixedly connected to the second screen plate 14, and the rotating rod 23 is movably connected to the inner side of the first screen plate 13. By rotating the rotating rod 23, the scraper 25 can be rotated accordingly, thereby achieving friction between the scraper 25 and the lower surface of the first screen plate 13, thereby removing the foam.

[0026] Furthermore, the connecting blocks 26 are formed into four groups and fixedly connected to the second wire mesh plate 14. One end of the connecting block 26 away from the second wire mesh plate 14 is movably connected to the rotating groove 27. Through the setting of the connecting block 26 and the action of the rotating groove 27, the second wire mesh plate 14 can be stably rotated under the action of the rotating rod 23, thereby achieving the overlapping and misalignment of the holes of the second wire mesh plate 14 and the holes of the first wire mesh plate 13, which can further break the foam.

[0027] Furthermore, a disassembly and assembly mechanism is provided on the surface of the evaporator 1, and the disassembly and assembly mechanism includes a mounting block 3, which is fixedly connected to the surface of the demister body 12, a mounting groove 31 is provided on the surface of the evaporator 1, a movable groove 32 is provided on the inner side of the evaporator 1, a pull rod 33 is movably connected to the inner side of the movable groove 32, an insert block 34 is fixedly connected to the surface of the pull rod 33, a slot 35 is provided on the surface of the mounting block 3, a spring 36 is fixedly connected to the surface of the insert block 34, and a rubber pad 37 is fixedly connected to the surface of the demister body 12. By moving the insert block 34 and inserting and separating it with the slot 35, the demister body 12 and the evaporator 1 can be fixed, thereby making it easier to disassemble and assemble the demister body 12, and convenient for cleaning and replacing the demister body 12.

[0028] Furthermore, the plug block 34 is movably connected to the inner side of the movable groove 32, one end of the spring 36 is fixedly connected to the movable groove 32, and the other end of the spring 36 is fixedly connected to the plug block 34. Through the setting of the spring 36, the plug block 34 can be reset, and then the plug block 34 and the slot 35 can be inserted into each other, so as to facilitate the fixation of the demister body 12, and at the same time realize the close connection between the rubber pad 37 and the surface of the evaporator 1, so as to achieve a sealing effect.

[0029] Working principle: When in use, the motor 21 is electrically connected to an external power source, and the staff starts the motor 21 by pressing the switch. The operation of the motor 21 drives the worm 2 to rotate, and the gear 24 rotates on the worm 2, and then the rotating rod 23 rotates under the action of the gear 24, and drives the scraper 25 to rotate, so that the scraper 25 breaks the foam under the first screen plate 13, thereby avoiding the accumulation of foam on the lower surface of the first screen plate 13. At the same time, the second screen plate 14 moves on the surface of the rotating groove 27 through the connecting block 26 under the action of the rotating rod 23, so that the second screen plate 14 rotates accordingly, thereby achieving better breaking and removal of the foam;

[0030] By pulling the pull rod 33, the plug block 34 is moved under the action of the pull rod 33, and the plug block 34 and the slot 35 can be separated. At this time, the spring 36 is in a contracted state, and the fixation of the demister body 12 and the evaporator 1 can be released, so that the demister body 12 can be removed for cleaning or replacement. By inserting the demister body 12 into the inner side of the evaporator 1 and overlapping the demister body 12 on the evaporator 1, and then releasing the pull rod 33, the plug block 34 will be reset under the rebound action of the spring 36, so that the plug block 34 and the slot 35 can be inserted into each other, and the demister body 12 and the evaporator 1 can be fixed. At this time, the rubber pad 37 is tightly fitted with the surface of the evaporator 1 under the action of the plug block 34 and the slot 35, so as to achieve sealing.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A demister for an air separation device, comprising a body, the body being applied to an evaporator (1), the inner wall of the evaporator (1) being fixedly connected to a support block (11), a demister body (12) being arranged on the inner side of the evaporator (1), the demister body (12) being overlapped on the upper surface of the support block (11), a first wire mesh plate (13) being fixedly connected to the inner side of the demister body (12), and a second wire mesh plate (14) being movably connected to the inner side of the demister body (12); It is characterized in that A crushing mechanism is arranged on the inner side of the demister body (12), the crushing mechanism comprising a worm (2), the worm (2) being movably connected to the inner side of the demister body (12), a motor (21) being fixedly mounted on the surface of the demister body (12), a rotating rod (23) being movably connected to the inner side of the demister body (12), a gear (24) being fixedly connected to the top end of the rotating rod (23), and a scraper (25) being fixedly connected to the bottom end of the rotating rod (23).

2. The demister for an air separation unit according to claim 1, characterized in that: The crushing mechanism further comprises a limiting sleeve (22), the limiting sleeve (22) being fixedly connected to the inner wall of the demister body (12), the rotating rod (23) being movably connected to the inner side of the limiting sleeve (22), a connecting block (26) being fixedly connected to the surface of the second wire mesh plate (14), and a rotating groove (27) being provided on the inner wall of the demister body (12).

3. The demister for an air separation unit according to claim 1, characterized in that: The worm (2) is fixedly connected to the output end of the motor (21), the rotating rod (23) is fixedly connected to the second wire mesh plate (14), and the rotating rod (23) is movably connected to the inner side of the first wire mesh plate (13).

4. The demister for an air separation unit according to claim 2, characterized in that: The connection blocks (26) are in four groups and fixedly connected to the second wire mesh plate (14); one end of the connection block (26) away from the second wire mesh plate (14) is movably connected to the rotation groove (27).

5. The demister for an air separation unit according to claim 1, characterized in that: The surface of the evaporator (1) is provided with a disassembly and assembly mechanism, the disassembly and assembly mechanism comprising a mounting block (3), the mounting block (3) being fixedly connected to the surface of the demister body (12), the surface of the evaporator (1) being provided with a mounting groove (31), the inner side of the evaporator (1) being provided with a movable groove (32), the inner side of the movable groove (32) being movably connected with a pull rod (33), the surface of the pull rod (33) being fixedly connected with an insert block (34), the surface of the mounting block (3) being provided with a slot (35), the surface of the insert block (34) being fixedly connected with a spring (36), and the surface of the demister body (12) being fixedly connected with a rubber pad (37).

6. The demister for an air separation unit according to claim 5, characterized in that: The insert block (34) is movably connected to the inner side of the movable groove (32), one end of the spring (36) is fixedly connected to the movable groove (32), and the other end of the spring (36) is fixedly connected to the insert block (34).

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