A micro-heat regenerative adsorption dryer

Abstract

The utility model discloses a kind of slightly hot regenerative adsorption dryers, including air inlet pipeline, air outlet pipeline, exhaust pipeline, first drying tower, second drying tower and heater, the end of air inlet pipeline is provided with first pipeline and second pipeline, third pipeline and fourth pipeline connected with exhaust pipeline are respectively provided on first pipeline and second pipeline, the top of first drying tower and second drying tower is respectively provided with fifth pipeline and sixth pipeline connected to air outlet pipeline, heating pipeline connected to heater is provided on air outlet pipeline, the outlet of heater is provided with switching pipeline;Switching pipeline includes parallel heating pressure air pipeline and cold blow pressure air pipeline, pressure reducing valve for adjusting pressure value according to temperature detected by temperature sensor is provided on cold blow pressure air pipeline.The utility model uses parallel heating pressure air pipeline and cold blow pressure air pipeline to supply gas in heating regeneration stage and cold blow stage respectively, reduces regenerative gas under the premise of meeting regeneration effect, and energy saving and consumption reduction.

Description

Technical Field

[0001] This utility model relates to the field of air drying equipment technology, and in particular to a micro-heat regeneration adsorption dryer. Background Technology

[0002] A micro-heat regenerative dryer is a device used to dry compressed air. It combines the advantages of both heated and heatless regeneration, reducing air consumption and achieving energy savings through a micro-heating regeneration method. However, the cold-blowing stage of a micro-heat regenerative dryer requires the introduction of a large amount of gas for cooling. In traditional structures, the gas is directly discharged into the atmosphere, resulting in energy waste. Furthermore, the high-velocity gas impact can shorten the desiccant's lifespan, and fixed flow control cannot optimize energy consumption based on actual temperature changes, leading to significant losses. Utility Model Content

[0003] To address the aforementioned technical problems, the purpose of this utility model is to propose a micro-heat regeneration adsorption dryer to achieve energy saving and consumption reduction.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A micro-thermal regenerative adsorption dryer includes an inlet pipe, an outlet pipe, an exhaust pipe, a first drying tower, a second drying tower, and a heater. The inlet pipe has a first pipe and a second pipe respectively connected to the bottom of the first and second drying towers. The first and second pipes are respectively connected to a third pipe and a fourth pipe connected to the exhaust pipe. A temperature sensor is installed on the exhaust pipe. The tops of the first and second drying towers are respectively connected to a fifth pipe and a sixth pipe connected to the outlet pipe. The outlet pipe has a heating pipe connected to the inlet of the heater. The heater outlet has a switching pipe, and the end of the switching pipe is respectively equipped with… The seventh and eighth pipes are connected to the fifth and sixth pipes; the first, fourth, fifth, and eighth pipes have the same on / off state, the second, third, sixth, and seventh pipes have the same on / off state, and the first and second pipes have opposite on / off states. The first and second drying towers alternately perform an adsorption and regeneration cycle; the switching pipes include a parallel heating compressed air pipe and a cold blowing compressed air pipe, which are not connected simultaneously. The diameter of the cold blowing compressed air pipe is smaller than that of the heating compressed air pipe, and a pressure reducing valve is installed on the cold blowing compressed air pipe to adjust the pressure value according to the temperature detected by the temperature sensor.

[0006] Preferably, the heated compressed air pipeline is equipped with a regeneration ball valve and a regeneration solenoid valve, and the cold-blowing compressed air pipeline is equipped with a cold-blowing ball valve and a cold-blowing solenoid valve.

[0007] Preferably, a first pneumatic valve is provided on the first pipeline, a second pneumatic valve is provided on the second pipeline, a third pipeline is provided between the first pneumatic valve and the first drying tower, and a fourth pipeline is provided between the second pneumatic valve and the second drying tower. A third pneumatic valve is provided on the third pipeline, and a fourth pneumatic valve is provided on the fourth pipeline.

[0008] Preferably, the fifth and sixth pipes are respectively equipped with a fifth check valve and a sixth check valve to prevent gas from flowing to the first drying tower and the second drying tower; the seventh and eighth pipes are respectively equipped with a seventh check valve and an eighth check valve to prevent gas from flowing to the heater.

[0009] Preferably, a silencer distributor is provided at the end of the exhaust pipe.

[0010] Preferably, an intake valve is provided on the intake pipe and an outlet valve is provided on the outlet pipe.

[0011] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0012] This utility model of a micro-heat regeneration adsorption dryer includes an inlet pipe, an outlet pipe, an exhaust pipe, a first drying tower, a second drying tower, and a heater. By controlling the on / off states of different pipes, the first and second drying towers alternately cycle through adsorption and regeneration, improving work efficiency. Parallel heating and cooling compressed air pipes supply air separately during the heating / regeneration and cooling / blowing stages. The diameter of the cooling / blowing compressed air pipe is smaller than that of the heating / blowing compressed air pipe, and a pressure reducing valve limits the air pressure, flow rate, and velocity within the cooling / blowing compressed air pipe. By reducing the velocity, the low-temperature air exchanges heat more fully with the desiccant during the cooling / blowing process, allowing the same volume of gas to carry away more heat, effectively reducing the air consumption during the cooling / blowing process. In addition, the lower pressure and velocity reduce the impact of gas on the desiccant, extending the desiccant's service life. By reducing the regeneration gas consumption while meeting the regeneration effect, energy saving and consumption reduction are achieved. Attached Figure Description

[0013] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0014] Appendix Figure 1 This is a schematic diagram of the micro-heat regeneration adsorption dryer of this utility model;

[0015] Appendix Figure 2 This is a schematic diagram of the micro-heat regeneration adsorption dryer of this utility model.

[0016] The components are as follows: 1. First pipeline; 2. Second pipeline; 3. Third pipeline; 4. Fourth pipeline; 5. Fifth pipeline; 6. Sixth pipeline; 7. Seventh pipeline; 8. Eighth pipeline; 9. First drying tower; 10. Second drying tower; 11. First pneumatic valve; 12. Second pneumatic valve; 13. Third pneumatic valve; 14. Fourth pneumatic valve; 15. Fifth check valve; 16. Sixth check valve; 17. Seventh check valve; 18. Eighth check valve; 19. Inlet valve; 20. Outlet valve; 21. Inlet pipeline; 22. Outlet pipeline; 23. Exhaust pipeline; 24. Heater; 25. Temperature sensor; 26. Heating pipeline; 27. Heated compressed air pipeline; 28. Cold blow compressed air pipeline; 29. ​​Pressure reducing valve; 30. Regeneration ball valve; 31. Regeneration solenoid valve; 32. Cold blow ball valve; 33. Cold blow solenoid valve; 34. Silencing distributor. Detailed Implementation

[0017] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0018] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or may have an intervening component present. When a component is referred to as "connected to" another component, it can be directly connected to the other component or may have an intervening component present.

[0019] Furthermore, it should be noted that the directional terms such as left, right, up, and down used in the embodiments of this utility model are only relative concepts or references to the normal use of the product, and should not be considered restrictive. The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0020] As attached Figure 1The diagram shows a micro-thermal regenerative adsorption dryer according to this invention, comprising an inlet pipe 21, an outlet pipe 22, an exhaust pipe 23, a first drying tower 9, a second drying tower 10, and a heater 24. The inlet pipe 21 has a first pipe 1 and a second pipe 2 at its end, respectively connected to the bottom of the first drying tower 9 and the second drying tower 10. A third pipe 3 and a fourth pipe 4, respectively connected to the exhaust pipe 23, are installed on the first pipe 1 and the second pipe 2. A temperature sensor 25 is installed on the exhaust pipe 23. A fifth pipe 5 and a sixth pipe 6, respectively connected to the outlet pipe 22, are installed at the top of the first drying tower 9 and the second drying tower 10. The outlet pipe 22 has a heating pipe 26 connected to the inlet of the heater 24. The outlet of the heater 24 is connected to a switching pipe, and the end of the switching pipe has a seventh pipe 7 and an eighth pipe 8, respectively connected to the fifth pipe 5 and the sixth pipe 6. The on / off states of the first pipe 1, the fourth pipe 4, the fifth pipe 5, and the eighth pipe 8 are the same; the on / off states of the second pipe 2, the third pipe 3, the sixth pipe 6, and the seventh pipe 7 are the same; the on / off states of the first pipe 1 and the second pipe 2 are opposite. The first drying tower 9 and the second drying tower 10 alternately perform an adsorption and regeneration cycle. The on / off states of the first pipe 1, the fourth pipe 4, the fifth pipe 5, the eighth pipe 8, the second pipe 2, the third pipe 3, the sixth pipe 6, and the seventh pipe 7 are switched periodically to form different pathways, thereby changing the working state of the first drying tower 9 and the second drying tower 10. Specifically, an inlet valve 19 is installed on the inlet pipe 21, an outlet valve 20 is installed on the outlet pipe 22, a first pneumatic valve 11 is installed on the first pipe 1, a second pneumatic valve 12 is installed on the second pipe 2, the third pipe 3 connects the first pneumatic valve 11 and the first drying tower 9, the fourth pipe 4 connects the second pneumatic valve 12 and the second drying tower 10, a third pneumatic valve 13 is installed on the third pipe 3, and a fourth pneumatic valve 14 is installed on the fourth pipe 4. Fifth pipe 5 and sixth pipe 6 are respectively equipped with fifth check valve 15 and sixth check valve 16 to prevent gas from flowing to the first drying tower 9 and the second drying tower 10. Seventh pipe 7 and eighth pipe 8 are respectively equipped with seventh check valve 17 and eighth check valve 18 to prevent gas from flowing to heater 24. In this embodiment, heater 24 is an electric heater, and a silencer distributor 34 is installed at the end of exhaust pipe 23.

[0021] The switching pipeline includes a parallel heated compressed air pipeline 27 and a cold-blown compressed air pipeline 28, which are not connected simultaneously. A regeneration ball valve 30 and a regeneration solenoid valve 31 are installed on the heated compressed air pipeline 27, while a cold-blown ball valve 32 and a cold-blown solenoid valve 33 are installed on the cold-blown compressed air pipeline 28. This allows for switching between the two pipelines, improving control, reducing the risk of each pipeline, enhancing reliability, and allowing them to be used in different operating conditions, facilitating adjustments under different environments and improving adaptability. The diameter of the cold-blown compressed air pipeline 28 is smaller than that of the heated compressed air pipeline 27 for easier control. A pressure-reducing valve 29 is installed on the cold-blown compressed air pipeline 28 to adjust the pressure value based on the temperature detected by the temperature sensor 25.

[0022] As attached Figure 2 As shown, during operation, hot and humid compressed air enters the bottom of the first drying tower 9 through the first pipe 1 from the intake pipe 21. After being adsorbed by the desiccant in the first drying tower 9, it becomes dry air. The dry air enters the fifth pipe 5 from the top of the first drying tower 9. After entering the branch, most of the dry air leaves through the exhaust pipe 22 for on-site use, while a small portion flows into the heating pipe 26 and enters the heater 24. After being heated to the set temperature by the heater 24, it enters the second drying tower 10 through the eighth pipe 8, where it heats and regenerates the desiccant in the second drying tower 10. The heated regenerated air causes the moisture adsorbed by the desiccant to evaporate. The water-containing regenerated air enters the exhaust pipe 23 from the fourth pipe 4 at the bottom of the second drying tower 10 and is discharged into the atmosphere through the silencer distributor 34. During this process, the first pneumatic valve 11... The fifth one-way valve 15, the eighth one-way valve 18, and the fourth pneumatic valve 14 are opened, while the second pneumatic valve 12, the third pneumatic valve 13, the seventh one-way valve 17, and the sixth one-way valve 16 are closed, allowing the gas to flow along the set channel to complete regeneration. When the regeneration time reaches the set value, the heating regeneration automatically ends, the heater 24 is turned off, and the temperature of the regeneration gas flow decreases, carrying away the heat in the second drying tower 10. After the cooling time reaches the set value, the cooling cycle ends, the first pneumatic valve 11, the fifth one-way valve 15, the eighth one-way valve 18, and the fourth pneumatic valve 14 are closed, while the second pneumatic valve 12, the third pneumatic valve 13, the seventh one-way valve 17, and the sixth one-way valve 16 are opened, switching the functions of the first drying tower 9 and the second drying tower 10. This cycle repeats to achieve regeneration and adsorption, providing continuous output and improving work efficiency.

[0023] During the cold blowing process, the moisture adsorbed by the desiccant has evaporated. However, to cool the regenerated desiccant, a large amount of gas still needs to be introduced for cooling. Directly venting the gas into the atmosphere would result in energy waste. Therefore, parallel heating compressed air pipes 27 and cold blowing compressed air pipes 28 are used to supply gas separately during the heating regeneration and cold blowing stages. The diameter of the cold blowing compressed air pipe 28 is smaller than that of the heating compressed air pipe 27, and a pressure reducing valve 29 is used to limit the air pressure, flow rate, and velocity within the cold blowing compressed air pipe 28. By reducing the velocity, the low-temperature air exchanges heat more fully with the desiccant during the cold blowing process, allowing the same volume of gas to carry away more heat, effectively reducing the gas consumption during the cold blowing process. In addition, the lower pressure and velocity reduce the impact of the gas on the desiccant, extending its service life. Through actual testing, the gas consumption during the cold blowing stage can be reduced by 30%, reducing regeneration gas consumption while meeting the regeneration effect, thus achieving energy saving and consumption reduction.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A micro-heat regenerative adsorption dryer, characterized in that: The system includes an intake pipe, an outlet pipe, an exhaust pipe, a first drying tower, a second drying tower, and a heater. The intake pipe has a first pipe and a second pipe at its end, respectively connected to the bottom of the first and second drying towers. The first and second pipes have a third pipe and a fourth pipe, respectively, connected to the exhaust pipe. A temperature sensor is installed on the exhaust pipe. The tops of the first and second drying towers have a fifth pipe and a sixth pipe, respectively, connected to the outlet pipe. The outlet pipe has a heating pipe connected to the inlet of the heater. The heater outlet has a switching pipe, the end of which is connected to the fifth pipe. The first, fourth, fifth, and eighth pipes are connected in the same on / off state, the second, third, sixth, and seventh pipes are connected in the same on / off state, and the first and second pipes are connected in opposite on / off states. The first and second drying towers alternately perform an adsorption and regeneration cycle. The switching pipes include a heated compressed air pipe and a cold compressed air pipe connected in parallel. The heated compressed air pipe and the cold compressed air pipe are not connected at the same time. The diameter of the cold compressed air pipe is smaller than that of the heated compressed air pipe. The cold compressed air pipe is equipped with a pressure reducing valve that adjusts the pressure value according to the temperature detected by the temperature sensor.

2. The micro-heat regeneration adsorption dryer according to claim 1, characterized in that: The heated compressed air pipeline is equipped with a regeneration ball valve and a regeneration solenoid valve, and the cold-blowing compressed air pipeline is equipped with a cold-blowing ball valve and a cold-blowing solenoid valve.

3. The micro-heat regenerative adsorption dryer according to claim 1, characterized in that: A first pneumatic valve is installed on the first pipeline, a second pneumatic valve is installed on the second pipeline, a third pipeline is installed between the first pneumatic valve and the first drying tower, and a fourth pipeline is installed between the second pneumatic valve and the second drying tower. A third pneumatic valve is installed on the third pipeline, and a fourth pneumatic valve is installed on the fourth pipeline.

4. The micro-heat regenerative adsorption dryer according to claim 1, characterized in that: The fifth and sixth pipes are respectively equipped with a fifth check valve and a sixth check valve to prevent gas from flowing to the first drying tower and the second drying tower; the seventh and eighth pipes are respectively equipped with a seventh check valve and an eighth check valve to prevent gas from flowing to the heater.

5. The micro-heat regenerative adsorption dryer according to claim 1, characterized in that: A silencer distributor is installed at the end of the exhaust pipe.

6. The micro-heat regenerative adsorption dryer according to claim 1, characterized in that: An intake valve is provided on the intake pipe, and an outlet valve is provided on the outlet pipe.

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