A regenerative air drying apparatus

Abstract

The utility model provides a kind of renewable air drying equipment, including drying tower, prefilter device, postfilter device and heater, drying tower is equipped with at least two, the inlet of each drying tower is connected respectively the outlet of prefilter device, and the inlet of prefilter device is connected with input interface;First pipeline is equipped with first electric control valve;The outlet of each drying tower is connected respectively the inlet of postfilter device, and the outlet of postfilter device is connected with output interface, second pipeline is equipped with second electric control valve;The outlet of each drying tower is connected respectively the outlet of heater;The inlet of heater is connected respectively on second pipeline, and connecting point is between second electric control valve and the inlet of postfilter device;The inlet of each drying tower is connected respectively with silencer.Compared with prior art, the utility model has the advantages of high degree of automation, low noise, low regeneration energy consumption and low labor cost, can effectively ensure the moisture content of output gas.

Description

Technical Field

[0001] This utility model relates to the technical field of gas drying, and in particular to a regenerative air drying device. Background Technology

[0002] Gases, due to their ease of storage, control, and good fluidity, are widely used in industries such as metallurgy, electronics, chemicals, and pharmaceuticals. However, moisture is ubiquitous in the working environment and is difficult to remove completely. Furthermore, traditional drying equipment suffers from high energy consumption, significant noise emissions, and an inability to guarantee the moisture content of the gas. Low levels of automation and excessive human intervention lead to high labor costs. Therefore, there is an urgent need to solve these problems. Utility Model Content

[0003] To address the aforementioned problems, this utility model achieves the above objectives through the following technical solution: a regenerative air drying device, comprising a drying tower, a pre-filter, a post-filter, and a heater; wherein at least two drying towers are provided, and the inlet of each drying tower is connected to the outlet of the pre-filter via a first pipe; the inlet of the pre-filter is connected to an input interface; and each of the first pipes is equipped with a first electrically controlled valve. The outlet of each drying tower is connected to the inlet of the post-filter via a second pipe. The outlet of the post-filter is connected to an output interface. Each of the second pipes is equipped with a second electrically controlled valve. The outlets of each of the drying towers are connected to the outlets of the heaters via third pipes; the inlets of the heaters are connected to the second pipes via fourth pipes, with the connection point located between the second electrically controlled valve and the inlet of the post-filter; a third electrically controlled valve is provided on the third pipe, and a fourth electrically controlled valve is provided on the fourth pipe; Each of the drying towers has a silencer connected to its inlet via a fifth pipe, and a fifth electrically controlled valve is installed on the fifth pipe.

[0004] Furthermore, the pre-filter includes at least two first filters, each of which is connected in parallel between the first pipe and the input interface. The inlet and outlet of each first filter are connected to a sixth electrically controlled valve. This effectively removes impurities from the input gas, and the corresponding first filter can be activated by controlling the opening and closing of the corresponding sixth electrically controlled valve. Even if one of the first filters fails, the other first filter can still maintain its filtration effect and prevent impurities from entering the drying equipment.

[0005] Furthermore, the post-filtration device includes at least two second filters, each of which is connected in parallel between the second pipe and the output interface. The inlet and outlet of each second filter are connected to a seventh solenoid valve. This effectively removes impurities generated within the drying equipment, keeping the output gas relatively clean and free of impurities. Moreover, by controlling the opening and closing of the corresponding seventh solenoid valve, the corresponding second filter can be activated. Even if one of the second filters fails, the other second filter can still ensure the filtration effect and prevent the output gas from containing impurities.

[0006] Furthermore, it also includes a moisture analyzer, the detection port of which is connected to the outlet of each of the drying towers; to monitor the moisture content of the gas in real time and ensure that the moisture content of the output gas is within the set range.

[0007] Furthermore, the muffler has an impedance composite structure and its interior is equipped with multi-stage noise reduction cavities, which can effectively ensure the noise reduction effect.

[0008] Furthermore, the heater is an electric heater, which consumes less energy and is safer and more reliable.

[0009] Compared with existing technologies, the advantages of this invention are as follows: First, by connecting a silencer to the fifth pipe, the problem of excessive noise from exhaust gas emissions can be solved at the source, making the working environment relatively quiet. Second, by installing electrically controlled valves on each pipe, automated control and automatic switching between different modes can be achieved, effectively improving the degree of automation, reducing manual intervention, and lowering labor costs. Third, by installing a heater, some gas can be reversed and fed into the drying tower to achieve low-energy regeneration of the drying tower, thereby solving the technical problems in existing technologies. Overall, this invention has the advantages of high automation, low noise, low regeneration energy consumption, and low labor costs, and can effectively ensure the moisture content of the output gas, resulting in relatively clean output gas. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the device connection of this utility model.

[0011] The reference numerals in the attached drawings are explained as follows: 1-Drying tower; 2-Heater; 3-First pipe; 4-Input interface; 5-First solenoid valve; 6-Second pipe; 7-Output interface; 8-Second solenoid valve; 9-Third pipe; 10-Fourth pipe; 11-Third solenoid valve; 12-Fourth solenoid valve; 13-Fifth pipe; 14-Silencer; 15-Fifth solenoid valve; 16-First filter; 17-Sixth solenoid valve; 18-Second filter; 19-Seventh solenoid valve; 20-Eighth solenoid valve. Detailed Implementation

[0012] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "left," "right," "inner," "outer," and similar expressions used in this specification are for illustrative purposes only.

[0013] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0014] like Figure 1 As shown, this utility model provides a regenerative air drying device, including a drying tower 1, a pre-filter, a post-filter, and a heater 2. There are at least two drying towers 1. The inlet of each drying tower 1 is connected to the outlet of the pre-filter through a first pipe 3. The inlet of the pre-filter is connected to an input interface 4. Each first pipe 3 is equipped with a first electrically controlled valve 5. The outlet of each drying tower 1 is connected to the inlet of the post-filter through the second pipe 6. The outlet of the post-filter is connected to the output interface 7. The second pipe 6 is equipped with a second solenoid valve 8. The outlets of each drying tower 1 are connected to the outlets of heaters 2 via third pipes 9; the inlets of heaters 2 are connected to the second pipes 6 via fourth pipes 10, with the connection point located between the second solenoid valve 8 and the inlet of the post-filter; a third solenoid valve 11 is provided on the third pipe 9, and a fourth solenoid valve 12 is provided on the fourth pipe 10. Each drying tower 1 has an inlet connected to a silencer 14 via a fifth pipe 13, and a fifth electrically controlled valve 15 is installed on the fifth pipe 13.

[0015] Specifically, the fifth solenoid valve 15 is located at the end near the silencer 14, while the fifth pipe 13 is equipped with an eighth solenoid valve 20 at the end near the inlet of the drying tower 1, corresponding to each drying tower 1. The eighth solenoid valve 20 of the drying tower 1 in the regeneration state will remain open, while the other eighth solenoid valves 20 will be closed to prevent cross-contamination.

[0016] The pre-filter includes at least two first filters 16, each connected in parallel between the first pipe 3 and the input port 4. The inlet and outlet of each first filter 16 are connected to a sixth electrically controlled valve 17. The post-filter includes at least two second filters 18, each connected in parallel between the second pipe 6 and the output port 7. The inlet and outlet of each second filter 18 are connected to a seventh electrically controlled valve 19. Generally, only one first filter 16 needs to be in operation, with the corresponding sixth electrically controlled valve 17 remaining open; the others are in standby mode, with their corresponding sixth electrically controlled valves 17 remaining closed. When a first filter 16 in operation malfunctions or fails to function properly for other reasons, the corresponding sixth electrically controlled valve 17 will close, while the others in standby mode will enter operation, with their corresponding sixth electrically controlled valves 17 remaining open. Similarly, the working principle of the second filters 18 is as described above and will not be repeated here. It should be noted that the attached drawings only show the structure of two first filters 16, two second filters 18, and two drying tables 1, but more can be connected in parallel according to actual needs. Those skilled in the art, after learning about this application, will clearly understand how to connect more first filters 16 and / or second filters 18 and / or drying tables 1 in parallel.

[0017] It also includes a moisture analyzer, whose detection ports are connected to the outlets of each drying tower 1. Notably, this equipment uses a PLC controller; all electrically controlled valves, heaters 2, and the moisture analyzer are electrically connected to the PLC controller. By setting the feedback range of the moisture analyzer, it can be determined whether drying tower 1 needs regeneration. The PLC controller then controls the opening and closing of each electrically controlled valve based on the feedback values ​​to achieve various operating modes.

[0018] Preferably, the muffler 14 has an impedance composite structure, and the muffler 14 has a multi-stage noise reduction cavity inside. The heater 2 is an electric heater.

[0019] The specific working principle of this utility model is as follows: When each drying tower 1 is in the adsorption state, the first solenoid valve 5 and the second solenoid valve 8 are kept open, and the remaining solenoid valves are kept closed. The gas is introduced from the input interface 4, and passes through the pre-filter, the first pipeline 3, the drying tower 1, the second pipeline 6, the second solenoid valve 8 and the post-filter in sequence, and finally flows from the output interface 7. When the adsorbent in one of the drying towers 1 reaches saturation (taking the left-hand drying tower 1 as an example where regeneration is required), the moisture analyzer will detect a change in the water content of the output gas. The PLC controller will then control the corresponding opening and closing of the various electrically controlled valves. For the left-hand drying tower 1, the first electrically controlled valve 5, the second electrically controlled valve 8, and the fourth electrically controlled valve 12 remain closed, while the third electrically controlled valve 11, the fifth electrically controlled valve 15, and the eighth electrically controlled valve 20 remain open. Simultaneously, for the right-hand drying tower 1, the first electrically controlled valve 5, the second electrically controlled valve 8, and the fourth electrically controlled valve 12 remain open. The residual solenoid valve remains closed; gas enters through input port 4, passes through the pre-filter and the right-side drying tower 1, and a portion of the gas enters the heater 2 through the right-side fourth solenoid valve 12. After being heated by the heater 2, this portion of gas passes through the left-side third solenoid valve 11 and is then reversed into the left-side drying tower 1 to achieve regeneration. Finally, the regenerated waste gas passes through the eighth solenoid valve 20, the fifth solenoid valve 15, and the silencer 14 in sequence before being discharged. Based on the real-time feedback from the moisture analyzer, the PLC controller switches the regenerated drying tower 1 back to adsorption mode and opens or closes the corresponding solenoid valves.

[0020] In summary, the technical solution of this utility model can fully and effectively achieve the aforementioned objectives. Furthermore, the structure and functional principles of this utility model have been fully verified in the embodiments, achieving the expected effects and objectives. Without departing from the principles and essence of this utility model, various changes or modifications can be made to the embodiments. Therefore, this utility model includes all substitutions within the scope mentioned in the patent application claims, and any equivalent changes made within the scope of this patent application are within the scope of the patent application.

Claims

1. A regenerative air drying device, comprising a drying tower (1), a pre-filter, a post-filter, and a heater (2), characterized in that: The drying tower (1) is provided with at least two units. The inlet of each drying tower (1) is connected to the outlet of the pre-filter through a first pipe (3). The inlet of the pre-filter is connected to an input interface (4). Each of the first pipes (3) is provided with a first electric control valve (5). The outlet of each drying tower (1) is connected to the inlet of the post-filter through a second pipe (6). The outlet of the post-filter is connected to an output interface (7). A second electric control valve (8) is provided on each of the second pipes (6). The outlets of each drying tower (1) are connected to the outlets of the heater (2) via a third pipe (9); the inlets of the heater (2) are connected to the second pipe (6) via a fourth pipe (10), and the connection point is located between the second solenoid valve (8) and the inlet of the post-filter device; a third solenoid valve (11) is provided on the third pipe (9), and a fourth solenoid valve (12) is provided on the fourth pipe (10); Each of the drying towers (1) has a silencer (14) connected to its inlet via a fifth pipe (13), and a fifth electrically controlled valve (15) is provided on the fifth pipe (13).

2. The regenerative air drying equipment according to claim 1, characterized in that: The pre-filter device includes at least two first filters (16), each of which is connected in parallel between the first pipe (3) and the input interface (4), and the inlet and outlet of the first filter (16) are connected to a sixth electrically controlled valve (17).

3. The regenerative air drying equipment according to claim 1, characterized in that: The post-filter device includes at least two second filters (18), each of which is connected in parallel between the second pipe (6) and the output port (7). The inlet and outlet of each second filter (18) are connected to a seventh solenoid valve (19).

4. The regenerative air drying equipment according to claim 1, characterized in that: It also includes a moisture analyzer, the detection port of which is connected to the outlet of each of the drying towers (1).

5. A regenerative air drying device according to claim 1, characterized in that: The muffler (14) is an impedance composite structure, and the muffler (14) has a multi-stage noise reduction cavity inside.

6. The regenerative air drying equipment according to claim 1, characterized in that: The heater (2) is an electric heater.

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