Instrument compressed air dewatering device

Abstract

The utility model discloses an instrument compressed air dewatering device, and belongs to the technical field of instrument compressed air treatment. The instrument compressed air dewatering device comprises an instrument compressed air storage tank, a refrigeration dryer, a micro-heat suction dryer and a filtering mechanism which are sequentially connected through a pipeline, the filtering mechanism comprises a shell with the upper end and the lower end open, an upper cover and a lower cover are fixed to the upper end and the lower end of the shell in a bolt connection mode respectively, and the upper end and the lower end of the shell are sealed. Two mounting grooves are formed in the shell, a first filter plate and a second filter plate are mounted in the two mounting grooves in a matched mode respectively, and the first filter plate and the second filter plate are both fixed to the lower cover; the diameter of filter holes of the first filter plate is larger than that of filter holes of the second filter plate, and compressed air sequentially passes through the first filter plate and the second filter plate.

Description

Technical Field

[0001] The utility model belongs to the technical field of instrument compressed air processing, and in particular relates to an instrument compressed air dewatering device. Background Art

[0002] Instrument air is a dry, clean gas with certain pressure requirements that is obtained by pressurizing, cooling and drying ordinary air with a compressor. In a workshop, a special set of equipment is usually set up to pressurize and store ordinary air, and then cool and dry it through a dehydration device. However, traditional dehydration devices usually use cold dryers to remove water. However, it is difficult for cold dryers to remove water completely. The use of instrument compressed air at the end carries water, which poses a safety risk. In addition, cold dryers cannot remove particulate matter in the air, and directly using it for instruments will cause certain safety risks. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an instrument compressed air dewatering device to solve the problems in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] An instrument compressed air dehumidification device comprises an instrument compressed air storage tank, a cold dryer, a micro-heat adsorption dryer and a filtering mechanism which are sequentially connected through pipelines;

[0006] The filtering mechanism comprises a shell which is open at the top and the bottom, and an upper cover and a lower cover are respectively fixed to the upper and lower ends of the shell by bolt connection, and the upper and lower ends of the shell are sealed; two mounting grooves are provided in the shell, and a first filter plate and a second filter plate are respectively mounted in the two mounting grooves, and the first filter plate and the second filter plate are both fixed to the lower cover; the filter hole diameter of the first filter plate is larger than the filter hole diameter of the second filter plate, and the compressed air passes through the first filter plate and the second filter plate in sequence.

[0007] Furthermore, a scraper which cooperates with the inner cavity and can be lifted and lowered is arranged in the shell.

[0008] Furthermore, two guide rods are fixed to the upper end of the scraper, which penetrate the upper cover in the vertical direction and are slidably connected thereto, a connecting plate is fixed to the upper end of the guide rods, a fixing frame is fixed to the upper end of the upper cover, a screw rod is rotatably connected to the fixing frame, and the screw rod penetrates the connecting plate in the vertical direction and is threadedly connected thereto.

[0009] Furthermore, the thread lead angle of the screw rod is smaller than the equivalent friction angle.

[0010] Furthermore, a rubber pad is fixed to the upper end of the scraper, two guide rods penetrate the rubber pad, and the rubber pad tightly wraps the two guide rods.

[0011] Furthermore, the first filter plate and the second filter plate are both fixed to the lower cover by bolt connection.

[0012] Furthermore, sealing gaskets made of rubber material are arranged between the shell and the upper cover and the lower cover.

[0013] Furthermore, a valve for controlling the flow is provided between the filtering mechanism and the micro-thermal desiccant.

[0014] Beneficial effects of the utility model:

[0015] 1. By adding a micro-heat adsorption dryer after the cold dryer to further dry the compressed air, compared with using only the cold dryer to dry the compressed air, the compressed air can be dried more thoroughly, avoiding the use of water at the end of the instrument compressed air, which may bring safety risks.

[0016] 2. By arranging a filtering mechanism at the rear of the micro-heat desiccant, and arranging a first filter plate and a second filter plate in the filtering mechanism, the diameter of the filter holes on the first filter plate is larger than the diameter of the filter holes in the second filter plate, so as to realize multi-stage filtration of the compressed air, and intercept and filter the particulate matter in the compressed air to avoid the particulate matter from entering the instrument and causing safety risks.

[0017] 3. By arranging a scraper in the shell that cooperates with its inner cavity and can be lifted and lowered, it is convenient to fully clean the particulate impurities adhering to the inner wall of the shell, ensuring that the inside of the filter mechanism is cleaned more thoroughly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the water removal device of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the filtering mechanism of the utility model;

[0021] Figure 3 It is a schematic diagram of the shell structure of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the lower cover assembly of the utility model;

[0023] Figure 5 It is a schematic diagram of the structure of the upper cover assembly of the utility model;

[0024] Figure 6 It is a schematic diagram of the scraper structure of the utility model. DETAILED DESCRIPTION

[0025] 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 of 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.

[0026] Example 1

[0027] like Figure 1 As shown, an instrument compressed air dehydration device comprises an instrument compressed air storage tank 1, a cold dryer 2, a micro-heat adsorption dryer 3 and a filtering mechanism 5 which are sequentially connected by pipelines. After being compressed, the air enters the compressed air storage tank 1 for storage. Then, when the compressed air is needed, the valve of the air outlet of the compressed air storage tank 1 is opened, and the compressed air first enters the cold dryer 2 for cooling and drying, and then enters the micro-heat adsorption dryer 3 for further drying treatment. Compared with using only the cold dryer 2 to dry the compressed air, the compressed air is dried more thoroughly, and the water at the end of the instrument compressed air is avoided, which may bring safety risks.

[0028] After the compressed air comes out of the micro-heat desiccant 3, it enters the filtering mechanism 5 to intercept and filter the particles in the compressed air to prevent the particles from entering the instrument and causing safety risks; the filtered compressed air is directly used in the workshop;

[0029] It is worth mentioning that after long-term use, the filter plate of the filter mechanism 5 needs to be disassembled and cleaned to avoid blockage and affect the circulation of compressed air; and during the disassembly and cleaning process, it is necessary to prevent compressed air from entering the filter mechanism 5. For this reason, in this embodiment, a valve 4 is set between the filter mechanism 5 and the micro-heat dryer 3 to control the circulation of compressed air between the two; when performing disassembly and cleaning operations, closing the valve 4 can ensure the safety of the disassembly and cleaning operations.

[0030] In addition, the compressed air storage tank 1, the cold dryer 2 and the micro-heat absorption dryer 3 are all provided with a sewage pipe 6 at the lower end to discharge the waste impurities therein.

[0031] Example 2

[0032] In this embodiment, the filtering mechanism 5 in Embodiment 1 is introduced with reference to the accompanying drawings;

[0033] like Figures 2 to 4As shown, the filtering mechanism 5 includes a housing 51, and an air inlet pipe 511 and an air outlet pipe 512 are respectively connected on both sides of the housing 51. The air inlet pipe 511 is connected to the valve 4. After the compressed air comes out of the micro-heat desiccant 3, it enters the housing 51 from the air inlet pipe 511 to complete the filtration, and then is discharged from the air outlet pipe 512 and enters the workshop for use;

[0034] The upper and lower ends of the shell 51 are open, and two installation grooves 513 are provided in the shell 51. The first filter plate 522 and the second filter plate 523 are respectively installed in the two installation grooves 513. The filter hole diameter on the first filter plate 522 is larger than the diameter of the second filter plate 523. When the compressed air enters the shell 51, it passes through the first filter plate 522 and the second filter plate 523 in sequence, thereby realizing multi-stage (two-stage) filtration of the compressed air.

[0035] The lower end of the housing 51 is provided with a lower cover assembly 52. Figure 4 As shown, the lower cover assembly 52 includes a lower cover 521 connected to the housing 51 by bolts, so as to block the lower end of the housing 1; the first filter plate 522 and the second filter plate 523 are both fixed to the upper end of the lower cover 521;

[0036] In this embodiment, the first filter plate 522 and the second filter plate 523 are fixed to the lower cover 521 by bolt connection to facilitate the later disassembly, cleaning or replacement of the first filter plate 522 and the second filter plate 523; of course, in some embodiments, the first filter plate 522 and the second filter plate 523 can also be fixed to the lower cover 521 by welding, but it is not easy to disassemble after welding, which will bring inconvenience to replacement.

[0037] The upper end of the housing 51 is provided with an upper cover assembly 53. Figure 5 As shown, the upper cover assembly 53 includes an upper cover 531 fixed to the housing 1 by bolt connection to block the upper end of the housing 51; a scraper 532 is provided in the housing 51, which cooperates with the inner cavity of the housing 51 and can be raised and lowered. When the housing 51 needs to be cleaned, the lower cover 531 is first disassembled together with the first filter plate 522 and the second filter plate 523, and then the scraper 532 is controlled to descend to scrape the particles adhered to the inner wall of the housing 51 away from the housing 51, so as to ensure the thoroughness of the cleaning inside the housing 51;

[0038] In this embodiment, if Figure 6As shown, two guide rods 5322 are fixed to the upper end of the scraper 532, and the guide rods 5322 penetrate the upper cover 531 in the vertical direction and are slidably connected thereto, and a connecting plate 5323 is fixed to the upper end of the guide rods 5322, and a fixing frame 533 is fixed to the upper end of the upper cover 531, and a screw rod 534 is rotatably connected to the fixing frame 533, and the screw rod 534 penetrates the connecting plate 5323 in the vertical direction and is threadedly connected thereto, and by rotating the screw rod 534, the lifting and lowering movement of the scraper 532 can be controlled, so that the particulate impurities adhering to the inner wall of the shell 51 can be scraped off; and the thread lead angle of the screw rod 534 is less than the equivalent friction angle, that is, the screw rod 534 has self-locking property, which ensures that the scraper 532 remains stable after the position is adjusted;

[0039] In addition, in this embodiment, a rubber pad 5321 is fixed to the upper end of the scraper 532, and two guide rods 5322 penetrate the rubber pad 5321 and tightly wrap the two guide rods 5322. When the scraper 532 is driven to rise to the highest point, the rubber pad 5321 can be tightly attached to the lower end surface of the upper cover 531 to improve the sealing of the connection between the guide rod 5322 and the upper cover 531.

[0040] Of course, the method of driving the scraper 532 to rise and fall includes but is not limited to the structure such as the screw rod 534 in this embodiment. In some embodiments, the scraper 532 can also be directly driven to rise and fall by setting a cylinder on the upper cover 531.

[0041] It should be mentioned that, in the present embodiment, rubber sealing gaskets are provided between the shell 51 and the upper cover 531 and the lower cover 532 to ensure the sealing performance of the upper and lower ends of the shell 51 .

[0042] Working principle:

[0043] By adding a micro-heat desiccant 3 after the cold dryer 2 to further dry the compressed air, the compressed air can be dried more thoroughly compared to using only the cold dryer 2 to dry the compressed air, avoiding the use of water at the end of the instrument compressed air, which may bring safety risks; by setting a filter mechanism 5 behind the micro-heat desiccant 3, and setting a first filter plate 522 and a second filter plate 523 in the filter mechanism 5, the filter hole diameter on the first filter plate 522 is larger than the filter hole diameter in the second filter plate 523, multi-stage filtration of the compressed air is achieved, and the particulate matter in the compressed air is intercepted and filtered to avoid the particulate matter from entering the instrument and causing safety risks. By setting a scraper 532 in the shell 51 that cooperates with its inner cavity and can be lifted and lowered, it is convenient to fully clean the particulate impurities adhering to the inner wall of the shell 1, ensuring that the internal cleaning of the filter mechanism 6 is more thorough.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An instrument compressed air dehydration device, characterized in that: It comprises an instrument compressed air storage tank (1), a cold dryer (2), a micro-heat absorption dryer (3) and a filtering mechanism (5) which are sequentially connected through pipelines; The filtering mechanism (5) comprises a shell (51) which is open at the top and bottom. The upper and lower ends of the shell (51) are respectively fixed with an upper cover (531) and a lower cover (521) by bolt connection, and the upper and lower ends of the shell (51) are sealed; two installation grooves (513) are provided in the shell (51), and a first filter plate (522) and a second filter plate (523) are respectively installed in the two installation grooves (513), and the first filter plate (522) and the second filter plate (523) are both fixed to the lower cover (521); the filter hole diameter of the first filter plate (522) is larger than the filter hole diameter of the second filter plate (523), and the compressed air passes through the first filter plate (522) and the second filter plate (523) in sequence.

2. The instrument compressed air dehydration device according to claim 1, characterized in that: The housing (51) is provided with a scraper (532) which cooperates with the inner cavity thereof and can be lifted and lowered.

3. The instrument compressed air dehydration device according to claim 2, characterized in that: Two guide rods (5322) are fixed to the upper end of the scraper (532), the guide rods (5322) penetrate the upper cover (531) in the vertical direction and are slidably connected thereto, a connecting plate (5323) is fixed to the upper end of the guide rods (5322), a fixing frame (533) is fixed to the upper end of the upper cover (531), a screw rod (534) is rotatably connected to the fixing frame (533), and the screw rod (534) penetrates the connecting plate (5323) in the vertical direction and is threadedly connected thereto.

4. The instrument compressed air dehydration device according to claim 3, characterized in that: The thread lead angle of the screw rod (534) is smaller than the equivalent friction angle.

5. The instrument compressed air dehydration device according to claim 3, characterized in that: A rubber pad (5321) is fixed to the upper end of the scraper (532), two guide rods (5322) penetrate the rubber pad (5321), and the rubber pad (5321) tightly wraps the two guide rods (5322).

6. The instrument compressed air dehydration device according to claim 1, characterized in that: The first filter plate (522) and the second filter plate (523) are both fixed to the lower cover (521) by means of bolt connection.

7. The instrument compressed air dehydration device according to claim 1, characterized in that: Sealing pads made of rubber material are provided between the housing (51) and the upper cover (531) and the lower cover (521).

8. The instrument compressed air dehydration device according to claim 1, characterized in that: A valve (4) for controlling circulation is provided between the filtering mechanism (5) and the micro-thermal desiccant (3).

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