Drying device

Abstract

The invention provides a drying device. The drying device comprises a drying assembly and a drying assembly, wherein the drying assembly comprises at least three drying towers; when the outlet of the first drying tower is communicated with the inlet of the second compressor, the other two drying towers are communicated with the heating element through the heating pipeline, the outlet of the first compressor is communicated with the inlet of the second drying tower, and the second drying tower is communicated with the inlet of the heating element through the heating pipeline; an outlet of the heating piece is communicated with an inlet of the third drying tower through a heating pipeline; the cooling assembly comprises a cooling piece and a cooling pipeline, and the outlet of each drying tower and the inlet of the cooling piece are arranged in an openable and closable mode through the cooling pipeline. According to the technical scheme provided by the invention, the problems that the drying tower stops working, the moisture of the compressed air cannot be continuously adsorbed and the treatment efficiency of the compressed air is influenced due to the fact that the drying tower is used for absorbing the moisture in the compressed air and an adsorbent needs to be heated for regeneration after adsorption in the related technology can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of drying equipment, and in particular to a drying device. Background Art

[0002] Compressed air is the second most powerful energy source after electricity because of its characteristics of easy storage, easy control, good fluidity, safety and environmental protection. It is widely used in many fields such as food, electricity, chemical industry, pharmaceuticals, mining and machinery manufacturing. The quality requirements of compressed air vary in different application fields, but they are always inseparable from the themes of high efficiency, energy saving and environmental protection. After the air is compressed by the compressor, compressed air with a higher pressure can be obtained. However, moisture is widely present in the ambient air and cannot be completely removed. After this part of water enters the compressor for compression, condensed water will precipitate due to changes in temperature and pressure, which seriously affects the operation of the compressor unit and the performance and life of other gas-using equipment. Therefore, it is very necessary to remove moisture from the air.

[0003] In the related art, compressed air is introduced into a drying tower, and the moisture is adsorbed by the adsorbent in the drying tower, thereby removing the moisture in the compressed air.

[0004] However, in the related art, a drying tower is used to absorb moisture in compressed air. After the adsorbent is adsorbed, it needs to be heated and regenerated, which will cause the drying tower to stop working and be unable to continuously adsorb moisture in the compressed air, thus affecting the processing efficiency of the compressed air. Summary of the invention

[0005] The present invention provides a drying device to solve the problem in the related art that a drying tower is used to absorb moisture in compressed air, and the adsorbent needs to be heated and regenerated after adsorption, which will cause the drying tower to stop working and cannot continue to adsorb moisture in the compressed air, thereby affecting the processing efficiency of the compressed air.

[0006] The present invention provides a drying device, which comprises: a drying component, comprising at least three drying towers, the inlet of each drying tower and the outlet of a first compressor can be opened and closed, and the outlet of each drying tower and the inlet of a second compressor can be opened and closed; a heating component, comprising a heating element and a heating pipeline, at least three drying towers are respectively opened and closed with the heating element, when the outlet of the first drying tower is connected to the inlet of the second compressor, the other two drying towers are connected to each other through the heating pipeline and the heating element, and the outlet of the first compressor is connected to the inlet of the second drying tower to cool the adsorbent in the drying tower, and the second drying tower is connected to the inlet of the heating element through the heating pipeline to heat the compressed air, and the outlet of the heating element is connected to the inlet of the third drying tower through the heating pipeline to heat the third drying tower; a cooling component, comprising a cooling element and a cooling pipeline, the outlet of each drying tower and the inlet of the cooling element can be opened and closed through the cooling pipeline, so that the outlet of the third drying tower is connected to the inlet of the cooling element, and the outlet of the cooling element can be connected to the inlet of the first drying tower.

[0007] Furthermore, the drying component also includes a first air inlet pipe and a second air inlet pipe, the first end of the first air inlet pipe is connected to the outlet of the first compressor, the second end of the first air inlet pipe can be connected to the inlets of at least three drying towers respectively, the first end of the second air inlet pipe is connected to the outlet of the first compressor, the second end of the second air inlet pipe can be connected to the inlets of at least three drying towers respectively, and the drying device also includes a first opening and closing valve and a second opening and closing valve, the first opening and closing valve is arranged on the first air inlet pipe, and the second opening and closing valve is arranged on the second air inlet pipe, so that a part of the compressed air passes into the first drying tower to adsorb moisture in the compressed air, and the other part of the compressed air passes into the second drying tower to cool the adsorbent in the drying tower.

[0008] Further, the first air inlet pipe includes a first inlet pipe section, a second inlet pipe section and a third inlet pipe section, the inlet of the first inlet pipe section, the inlet of the second inlet pipe section and the inlet of the third inlet pipe section are all connected to the inlet of the first compressor, the first inlet pipe section, the second inlet pipe section and the third inlet pipe section are all provided with a first opening and closing valve, the outlet of the first inlet pipe section is connected to the inlet of the first drying tower, the outlet of the second inlet pipe section is connected to the inlet of the second drying tower, and the outlet of the third inlet pipe section is connected to the inlet of the third drying tower; the second air inlet pipe includes a fourth inlet pipe section, a fifth inlet pipe section and a sixth inlet pipe section, the inlet of the fourth inlet pipe section, the inlet of the fifth inlet pipe section and the inlet of the sixth inlet pipe section are all connected to the inlet of the first compressor, the fourth inlet pipe section, the fifth inlet pipe section and the sixth inlet pipe section are all provided with a second opening and closing valve, the outlet of the fourth inlet pipe section is connected to the inlet of the first drying tower, the outlet of the fifth inlet pipe section is connected to the inlet of the second drying tower, and the outlet of the sixth inlet pipe section is connected to the inlet of the third drying tower.

[0009] Furthermore, the heating pipeline includes a first heating tube and a second heating tube, the first end of the first heating tube can be respectively connected to the outlets of at least three drying towers, the second end of the first heating tube can be connected to the inlet of the heating element, the inlet of the second heating tube is connected to the outlet of the heating element, and the outlet of the second heating tube can be selectively and openably connected to the inlets of at least three drying towers, and the drying device also includes a third on-off valve and a fourth on-off valve, the third on-off valve is arranged on the first heating tube, and the fourth on-off valve is arranged on the second heating tube, so that the compressed air discharged from the second drying tower enters the heating element through the first heating tube, and enters the third drying tower through the second heating tube after being heated by the heating element.

[0010] Further, the first heating tube includes a first heating sub-tube, a second heating sub-tube and a third heating sub-tube, the inlet of the first heating sub-tube is connected to the outlet of the first drying tower, the inlet of the second heating sub-tube is connected to the outlet of the second drying tower, the inlet of the third heating sub-tube is connected to the outlet of the third drying tower, the first heating sub-tube, the second heating sub-tube and the third heating sub-tube are all provided with a third opening and closing valve, the outlet of the first heating sub-tube, the outlet of the second heating sub-tube and the outlet of the third heating sub-tube are all connected to the inlet of the heating element; the second heating tube includes a fourth heating sub-tube, a fifth heating sub-tube and a sixth heating sub-tube, the outlet of the fourth heating sub-tube is connected to the inlet of the first drying tower, the outlet of the fifth heating sub-tube is connected to the inlet of the second drying tower, the outlet of the sixth heating sub-tube is connected to the inlet of the third drying tower, the fourth heating sub-tube, the fifth heating sub-tube and the sixth heating sub-tube are all provided with a fourth opening and closing valve, the inlet of the fourth heating sub-tube, the inlet of the fifth heating sub-tube and the inlet of the sixth heating sub-tube are connected to the outlet of the Junyu heating element.

[0011] Furthermore, the heating element includes a drying regeneration heater, the outlet of the first heating sub-tube, the outlet of the second heating sub-tube and the outlet of the third heating sub-tube are respectively connected to the inlet of the drying regeneration heater, the drying device also includes a steam pipeline, the inlet of the steam pipeline is connected to the air source, the drying regeneration heater has a heating chamber, part of the steam pipeline is arranged in the heating chamber, the outlet of the steam pipeline is connected to the outside, and part of the steam pipeline in the heating chamber heats the compressed air entering the heating chamber.

[0012] Furthermore, the heating element also includes a dry regeneration electric heater and a first connecting pipe, the first end of the first connecting pipe is connected to the outlet of the dry regeneration electric heater, the second end of the first connecting pipe is connected to the inlet of the dry regeneration electric heater, and the inlet of the fourth heating sub-tube, the inlet of the fifth heating sub-tube and the inlet of the sixth heating sub-tube are respectively connected to the outlet of the dry regeneration electric heater.

[0013] Furthermore, the cooling pipeline includes a first cooling sub-tube, a second cooling sub-tube and a third cooling sub-tube. The inlet of the first cooling sub-tube is connected to the first drying tower, the inlet of the second cooling sub-tube is connected to the second drying tower, and the inlet of the third cooling sub-tube is connected to the third drying tower. The first cooling sub-tube, the second cooling sub-tube and the third cooling sub-tube are all provided with a fifth opening and closing valve and are all connected to the cooling element. The outlet of the first cooling sub-tube, the outlet of the second cooling sub-tube and the outlet of the third cooling sub-tube are all connected to the inlet of the cooling element.

[0014] Furthermore, the cooling component includes a dry regeneration cooler, the outlet of the first cooling sub-tube, the outlet of the second cooling sub-tube and the outlet of the third cooling sub-tube are all connected to the inlet of the dry regeneration cooler, the outlet of the dry regeneration cooler can be connected to a drying tower connected to the inlet of the second compressor, the drying device also includes a cooling water pipeline, the inlet of the cooling water pipeline is connected to a water source, the dry regeneration cooler has a cooling chamber, part of the cooling water pipeline is arranged in the cooling chamber, the outlet of the cooling water pipeline is connected to the outside, and part of the cooling water pipeline in the cooling chamber cools the compressed air entering the cooling chamber.

[0015] Furthermore, the cooling element also includes a drying regeneration separator and a second connecting pipe, the first end of the second connecting pipe is connected to the outlet of the drying regeneration cooler, the second end of the second connecting pipe is connected to the inlet of the drying regeneration separator, and the outlet of the drying regeneration separator can be connected to a drying tower connected to the inlet of the second compressor.

[0016] Furthermore, the drying device also includes a precision filter, the outlet of the first drying tower is connected to the inlet of the precision filter, and the outlet of the precision filter is connected to the inlet of the second compressor.

[0017] According to the technical solution of the present invention, the drying device includes a drying component, a heating component and a cooling component. The drying component includes at least three drying towers. The inlet of each drying tower is openably and closably arranged with the outlet of the first compressor. The outlet of each drying tower is openably and closably arranged with the inlet of the second compressor. In this way, the multiple drying towers can adsorb the moisture in the compressed air through the adsorbent in the drying tower, thereby removing the moisture in the compressed air. In addition, in order to ensure the recycling of the drying device, it is not necessary to shut down the drying device to dehydrate the adsorbent in the drying tower. Therefore, a heating component and a cooling component are arranged. By using the heating element and the heating pipeline in the heating component, at least three drying towers can be respectively opened and closed with the heating element. Specifically, after the drying tower adsorbs the moisture in the compressed air, it is necessary to perform a heating treatment to evaporate the moisture in the adsorbent into water vapor and discharge it into the cooling element together with the compressed air. The water vapor in the compressed air is cooled by the cooling element, and the outlet of the cooling element is connected to the inlet of the first drying tower, so that the compressed air can continue to be passed into the first drying tower, so that the compressed air can be dehydrated and adsorbed. Specifically, when the outlet of the first drying tower is connected to the inlet of the second compressor, the outlet of the second drying tower and the outlet of the third drying tower are not connected to the inlet of the second compressor, and the outlet of the first compressor is connected to the inlet of the second drying tower, so that the high-temperature adsorbent in the second drying tower can be cooled, and the compressed air can be passed into the heating element through the heating pipeline to heat the compressed air, and the compressed air in the heating element is discharged to the inlet of the third drying tower, so that the third drying tower can be dehydrated and adsorbed, and then the compressed air heated by the heating element can be used for heat exchange, so that the water adsorbed by the adsorbent can be heated to water vapor, so that the compressed air and water can be separated. The steam is discharged into the cooling pipeline through the outlet of the third drying tower. The outlet of the cooling pipeline is connected with the inlet of the cooling element, so that the water vapor in the compressed air and water vapor can be cooled and condensed, thereby ensuring that the compressed air is discharged at the outlet of the cooling element, and the outlet of the cooling element is connected with the inlet of the first drying tower, so that the compressed air can be dehydrated. After the dehydration and adsorption in the drying tower, the switch is performed to heat the compressed air and then heat the drying tower after the dehydration and adsorption. After heating, the original compressed air is used to cool the adsorbent in the drying tower, ensuring that the drying tower can be reused only by using compressed air, without stopping the drying device, thereby improving the processing efficiency of compressed air. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of a drying device provided according to an embodiment of the present invention is shown.

[0020] The above drawings include the following reference numerals:

[0021] 10. Drying assembly; 11. Drying tower; 12. First air inlet pipe; 121. First inlet pipe section; 122. Second inlet pipe section; 123. Third inlet pipe section; 13. Second air inlet pipe; 131. Fourth inlet pipe section; 132. Fifth inlet pipe section; 133. Sixth inlet pipe section;

[0022] 20. Heating assembly; 21. Heating element; 211. Drying regeneration heater; 212. Drying regeneration electric heater; 22. Heating pipeline; 221. First heating tube; 2211. First heating sub-tube; 2212. Second heating sub-tube; 2213. Third heating sub-tube; 222. Second heating tube; 2221. Fourth heating sub-tube; 2222. Fifth heating sub-tube; 2223. Sixth heating sub-tube;

[0023] 30. Cooling assembly; 31. Cooling element; 311. Drying regeneration cooler; 312. Drying regeneration separator; 32. Cooling pipeline; 321. First cooling sub-tube; 322. Second cooling sub-tube; 323. Third cooling sub-tube;

[0024] 41. First opening and closing valve; 42. Second opening and closing valve; 43. Third opening and closing valve; 44. Fourth opening and closing valve; 45. Steam pipeline; 46. First connecting pipe; 47. Fifth opening and closing valve; 48. Cooling water pipeline; 49. Second connecting pipe;

[0025] 50. Precision filter. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] like Figure 1As shown, an embodiment of the present invention provides a drying device, which includes a drying component 10, a heating component 20 and a cooling component 30. The drying component 10 includes at least three drying towers 11, and the inlet of each drying tower 11 and the outlet of the first compressor can be opened and closed. The outlet of each drying tower 11 and the inlet of the second compressor can be opened and closed. The heating component 20 includes a heating element 21 and a heating pipeline 22. At least three drying towers 11 are respectively opened and closed with the heating element 21. When the outlet of the first drying tower 11 is connected to the inlet of the second compressor, the other two drying towers 11 are connected to each other through the heating pipeline 22 and the heating element 21, and the outlet of the first compressor is opened and closed. It is connected with the inlet of the second drying tower 11 to cool the adsorbent in the drying tower 11, and the second drying tower 11 is connected with the inlet of the heating element 21 through the heating pipeline 22 to heat the compressed air. The outlet of the heating element 21 is connected with the inlet of the third drying tower 11 through the heating pipeline 22 to heat the third drying tower 11. The cooling assembly 30 includes a cooling element 31 and a cooling pipeline 32. The outlet of each drying tower 11 and the inlet of the cooling element 31 can be opened and closed through the cooling pipeline 32, so that the outlet of the third drying tower 11 is connected with the inlet of the cooling element 31, and the outlet of the cooling element 31 can be connected with the inlet of the first drying tower 11.

[0028] The drying device provided in this embodiment includes a drying component 10, a heating component 20 and a cooling component 30. The drying component 10 includes at least three drying towers 11. The inlet of each drying tower 11 is openably and closably arranged with the outlet of the first compressor, and the outlet of each drying tower 11 is openably and closably arranged with the inlet of the second compressor. In this way, the multiple drying towers 11 can adsorb moisture in the compressed air through the adsorbent in the drying towers 11, thereby removing moisture from the compressed air. Furthermore, in order to ensure the recycling of the drying device, there is no need to shut down the drying device to dehydrate the adsorbent in the drying tower 11. Therefore, a heating component 20 and a cooling component 30 are provided. By utilizing the heating element 21 and the heating pipeline 22 in the heating component 20, at least three drying towers 11 can be respectively opened and closed with the heating element 21. Specifically, after the drying tower 11 adsorbs the moisture in the compressed air, it is necessary to perform a heating treatment to evaporate the moisture in the adsorbent into water vapor and discharge it into the cooling element 31 together with the compressed air. The water vapor in the compressed air is cooled by the cooling element 31, and the outlet of the cooling element 31 is connected to the inlet of the first drying tower 11, so that the compressed air can continue to be passed into the first drying tower 11, so that the compressed air can be dehydrated and adsorbed. Specifically, when the outlet of the first drying tower 11 is connected to the inlet of the second compressor, the outlet of the second drying tower 11 and the outlet of the third drying tower 11 are not connected to the inlet of the second compressor, and the outlet of the first compressor is connected to the inlet of the second drying tower 11, so that the high-temperature adsorbent in the second drying tower 11 can be cooled, and the compressed air can be passed into the heating element 21 through the heating pipeline 22 to heat the compressed air, and the compressed air in the heating element 21 is discharged to the inlet of the third drying tower 11, so that the third drying tower 11 can be dehydrated and adsorbed, and then the compressed air heated by the heating element 21 can be heat exchanged, so that the water adsorbed by the adsorbent can be heated to water vapor, so that the compressed air and water can be separated. The steam is discharged into the cooling pipeline 32 through the outlet of the third drying tower 11. The outlet of the cooling pipeline 32 is connected with the inlet of the cooling element 31, so that the water vapor in the compressed air and water vapor can be cooled and condensed, thereby ensuring that the compressed air is discharged at the outlet of the cooling element 31, and the outlet of the cooling element 31 is connected with the inlet of the first drying tower 11, so that the compressed air can be dehydrated. After the drying tower 11 is dehydrated and adsorbed, it is switched to heat the compressed air and then heat the drying tower 11 after dehydration and adsorption. After heating, the original compressed air is used to cool the adsorbent in the drying tower 11, ensuring that the drying tower 11 can be reused only by compressed air without stopping the drying device, thereby improving the processing efficiency of compressed air.

[0029] It should be noted that the compressed air generated by the first compressor needs to be dehydrated before being discharged into the second compressor.

[0030] Among them, when the drying component 10 includes four or more drying towers 11, it is only necessary to ensure that at least one drying tower 11 dehydrates the compressed air, and the other drying towers 11 can be heated and regenerated by compressed air, so that the desiccant in the drying tower 11 can be reused. In order to ensure that the temperature of the drying tower 11 is low, it is only necessary to first perform heat exchange on the heated drying tower 11 with compressed air to cool the adsorbent in the drying tower 11, and then the compressed air is passed into the heating element 21 for heating treatment, and then the heated compressed air is discharged into the drying tower 11 after the adsorption is completed, so that the liquid water in the drying tower 11 evaporates into gaseous water vapor and is discharged to the cooling element 31 for condensation, thereby realizing the recycling of the drying tower 11, and the dehydration treatment of the drying tower 11 can be achieved without stopping the operation.

[0031] Specifically, the first drying tower 11, the second drying tower 11 and the third drying tower 11 in the figure are only examples. In other embodiments, the corresponding order of the first drying tower 11, the second drying tower 11 and the third drying tower 11 can be changed.

[0032] like Figure 1As shown, the drying component 10 also includes a first air inlet pipe 12 and a second air inlet pipe 13, the first end of the first air inlet pipe 12 is connected to the outlet of the first compressor, the second end of the first air inlet pipe 12 can be respectively connected to the inlets of at least three drying towers 11, the first end of the second air inlet pipe 13 is connected to the outlet of the first compressor, the second end of the second air inlet pipe 13 can be respectively connected to the inlets of at least three drying towers 11, the drying device also includes a first opening and closing valve 41 and a second opening and closing valve 42, the first opening and closing valve 41 is arranged on the first air inlet pipe 12, and the second opening and closing valve 42 is arranged on the second air inlet pipe 13, so that a part of the compressed air is passed into the first drying tower 11 to adsorb the moisture in the compressed air, and the other part of the compressed air is passed into the second drying tower 11 to cool the adsorbent in the drying tower 11. The drying assembly 10 of the above structure is adopted, and the first end of the first air inlet pipe 12 is connected to the outlet of the first compressor, and the second end of the first air inlet pipe 12 can be respectively connected to the inlet of at least three drying towers 11, and the first end of the second air inlet pipe 13 is connected to the outlet of the first compressor, and the second end of the second air inlet pipe 13 can be respectively connected to the inlet of at least three drying towers 11. The first opening and closing valve 41 is arranged on the first air inlet pipe 12, and the second opening and closing valve 42 is arranged on the second air inlet pipe 13. By correspondingly controlling the opening and closing of the first opening and closing valve 41 and the opening and closing of the second opening and closing valve 42, a part of the compressed air is directly discharged into The first drying tower 11 adsorbs the moisture in the compressed air, and another part of the compressed air is passed into the second drying tower 11, thereby cooling the adsorbent heated and regenerated in the drying tower 11, ensuring that the second drying tower 11 can be directly connected to the inlet of the first compressor in the subsequent process to adsorb the moisture in the compressed air. In this way, under the action of the first opening and closing valve 41 and the second opening and closing valve 42, the flow path of the compressed air is guaranteed, and the opening and closing of the first opening and closing valve 41 and the second opening and closing valve 42 can be controlled to realize that the corresponding order of the first drying tower 11, the second drying tower 11 and the third drying tower 11 can be changed with each other.

[0033] like Figure 1As shown, the first air inlet pipe 12 includes a first inlet pipe section 121, a second inlet pipe section 122 and a third inlet pipe section 123, the inlet of the first inlet pipe section 121, the inlet of the second inlet pipe section 122 and the inlet of the third inlet pipe section 123 are all connected to the inlet of the first compressor, the first inlet pipe section 121, the second inlet pipe section 122 and the third inlet pipe section 123 are all provided with a first opening and closing valve 41, the outlet of the first inlet pipe section 121 is connected to the inlet of the first drying tower 11, the outlet of the second inlet pipe section 122 is connected to the inlet of the second drying tower 11, and the outlet of the third inlet pipe section 123 is connected to the inlet of the third drying tower 11. By adopting the above structure, the first opening and closing valve 41 is provided on the first inlet pipe section 121, the second inlet pipe section 122 and the third inlet pipe section 123, so that the first drying tower 11, the second drying tower 11 and the third drying tower 11 can be sequentially switched through the first opening and closing valve 41, so that it is only necessary to control the first opening and closing valve 41 to ensure that at least one drying tower 11 can adsorb the moisture in the compressed air, so as to ensure that the drying device can be used continuously and improve the processing efficiency of the compressed air.

[0034] like Figure 1 As shown, the second air inlet pipe 13 includes a fourth inlet pipe section 131, a fifth inlet pipe section 132 and a sixth inlet pipe section 133, the inlet of the fourth inlet pipe section 131, the inlet of the fifth inlet pipe section 132 and the inlet of the sixth inlet pipe section 133 are all connected to the inlet of the first compressor, the fourth inlet pipe section 131, the fifth inlet pipe section 132 and the sixth inlet pipe section 133 are all provided with a second opening and closing valve 42, the outlet of the fourth inlet pipe section 131 is connected to the inlet of the first drying tower 11, the outlet of the fifth inlet pipe section 132 is connected to the inlet of the second drying tower 11, and the outlet of the sixth inlet pipe section 133 is connected to the inlet of the third drying tower 11. By adopting the above structure, by setting the second opening and closing valve 42 on the fourth inlet pipe section 131, the fifth inlet pipe section 132 and the sixth inlet pipe section 133, the first drying tower 11, the second drying tower 11 and the third drying tower 11 can be sequentially switched through the second opening and closing valve 42, so that it is only necessary to control the second opening and closing valve 42 to ensure that at least one drying tower 11 can cool the adsorbent after the drying tower 11 is regenerated, so as to ensure that the drying device can be used continuously and improve the processing efficiency of compressed air.

[0035] like Figure 1As shown, the heating pipeline 22 includes a first heating tube 221 and a second heating tube 222, the first end of the first heating tube 221 can be respectively connected to the outlets of at least three drying towers 11, the second end of the first heating tube 221 can be connected to the inlet of the heating element 21, the inlet of the second heating tube 222 is connected to the outlet of the heating element 21, and the outlet of the second heating tube 222 can be selectively and openably connected to the inlets of at least three drying towers 11, and the drying device also includes a third opening and closing valve 43 and a fourth opening and closing valve 44, the third opening and closing valve 43 is arranged on the first heating tube 221, and the fourth opening and closing valve 44 is arranged on the second heating tube 222, so that the compressed air discharged from the second drying tower 11 enters the heating element 21 through the first heating tube 221, and the heating element 21 is heated and enters the third drying tower 11 through the second heating tube 222. The heating pipeline 22 of the above structure is adopted, and the first end of the first heating pipe 221 can be connected to the outlets of the three drying towers 11 respectively, the second end of the first heating pipe 221 is connected to the inlet of the heating element 21, the inlet of the second heating pipe 222 is connected to the outlet of the heating element 21, and the outlet of the second heating pipe 222 is connected to the inlet of the third drying tower 11. In this way, through the first heating pipe 221 and the second heating pipe 222, it is possible to ensure that the compressed air is discharged to the heating element 21 through the first heating pipe 221, and then the compressed air is heated and discharged to the second drying tower 11. The drying tower 11 is subjected to heating and regeneration treatment, wherein, under the action of the third opening and closing valve 43, one of at least three drying towers 11 is selected to be connected to the inlet of the heating element 21 to heat the compressed air, and under the action of the fourth opening and closing valve 44, one of at least three drying towers 11 is selected to be connected to the outlet of the heating element 21, and then the drying tower 11 after the adsorption treatment is subjected to heating and regeneration treatment by the heated compressed air, thereby ensuring that the drying device can work continuously and that multiple drying towers 11 can be recycled while working continuously.

[0036] like Figure 1As shown, the first heating tube 221 includes a first heating sub-tube 2211, a second heating sub-tube 2212 and a third heating sub-tube 2213, the inlet of the first heating sub-tube 2211 is connected to the outlet of the first drying tower 11, the inlet of the second heating sub-tube 2212 is connected to the outlet of the second drying tower 11, the inlet of the third heating sub-tube 2213 is connected to the outlet of the third drying tower 11, the first heating sub-tube 2211, the second heating sub-tube 2212 and the third heating sub-tube 2213 are all provided with a third opening and closing valve 43, and the outlet of the first heating sub-tube 2211, the outlet of the second heating sub-tube 2212 and the outlet of the third heating sub-tube 2213 are all connected to the inlet of the heating element 21. By adopting the above structure, the third opening and closing valve 43 is provided on the first heating sub-tube 2211, the second heating sub-tube 2212 and the third heating sub-tube 2213, so that the first drying tower 11, the second drying tower 11 and the third drying tower 11 can be sequentially switched through the third opening and closing valve 43, and it can be ensured that only the third opening and closing valve 43 needs to be controlled to ensure that at least one drying tower 11 can cool down the drying tower 11 that is heated and regenerated, thereby ensuring that the drying device can be used continuously and improving the processing efficiency of compressed air.

[0037] like Figure 1 As shown, the second heating tube 222 includes a fourth heating sub-tube 2221, a fifth heating sub-tube 2222 and a sixth heating sub-tube 2223, the outlet of the fourth heating sub-tube 2221 is connected to the inlet of the first drying tower 11, the outlet of the fifth heating sub-tube 2222 is connected to the inlet of the second drying tower 11, the outlet of the sixth heating sub-tube 2223 is connected to the inlet of the third drying tower 11, the fourth heating sub-tube 2221, the fifth heating sub-tube 2222 and the sixth heating sub-tube 2223 are all provided with a fourth opening and closing valve 44, and the inlet of the fourth heating sub-tube 2221, the inlet of the fifth heating sub-tube 2222 and the inlet of the sixth heating sub-tube 2223 are connected to the outlet of the Junyu heating element 21. By adopting the above structure, the fourth opening and closing valve 44 is provided on the fourth heating sub-tube 2221, the fifth heating sub-tube 2222 and the sixth heating sub-tube 2223, so that the first drying tower 11, the second drying tower 11 and the third drying tower 11 can be sequentially switched through the fourth opening and closing valve 44, and it can be ensured that only the fourth opening and closing valve 44 needs to be controlled to ensure that at least one drying tower 11 can heat and regenerate the drying tower 11 after the moisture in the compressed air is adsorbed, thereby ensuring that the drying device can be used continuously and improving the processing efficiency of the compressed air.

[0038] like Figure 1As shown, the heating element 21 includes a drying regeneration heater 211, the outlet of the first heating sub-tube 2211, the outlet of the second heating sub-tube 2212 and the outlet of the third heating sub-tube 2213 are respectively connected to the inlet of the drying regeneration heater 211, the drying device also includes a steam pipeline 45, the inlet of the steam pipeline 45 is connected to the air source, the drying regeneration heater 211 has a heating chamber, part of the steam pipeline 45 is arranged in the heating chamber, the outlet of the steam pipeline 45 is connected to the outside, and part of the steam pipeline 45 in the heating chamber heats the compressed air entering the heating chamber. With the above structure, by setting the heating element of the above structure, the outlet of the first heating sub-tube 2211, the outlet of the second heating sub-tube 2212 and the outlet of the third heating sub-tube 2213 are respectively connected to the inlet of the drying regeneration heater 211, and the steam pipeline 45 is used to perform heat exchange on the compressed air in the drying regeneration heater 211, so as to ensure that the compressed air is heated.

[0039] like Figure 1 As shown, the heating element 21 further includes a drying regeneration electric heater 212 and a first connecting pipe 46, the first end of the first connecting pipe 46 is connected to the outlet of the drying regeneration electric heater 211, the second end of the first connecting pipe 46 is connected to the inlet of the drying regeneration electric heater 212, and the inlet of the fourth heating sub-tube 2221, the inlet of the fifth heating sub-tube 2222 and the inlet of the sixth heating sub-tube 2223 are respectively connected to the outlet of the drying regeneration electric heater 212. The heating element 21 with the above structure ensures that more compressed air is heated by connecting the drying regeneration heater 211 and the drying regeneration electric heater 212 through the first connecting pipe 46, thereby being able to heat and regenerate the second drying tower 11.

[0040] like Figure 1As shown, the cooling pipeline 32 includes a first cooling sub-tube 321, a second cooling sub-tube 322 and a third cooling sub-tube 323. The inlet of the first cooling sub-tube 321 is connected to the first drying tower 11, the inlet of the second cooling sub-tube 322 is connected to the second drying tower 11, and the inlet of the third cooling sub-tube 323 is connected to the third drying tower 11. The first cooling sub-tube 321, the second cooling sub-tube 322 and the third cooling sub-tube 323 are all provided with a fifth opening and closing valve 47 and are all connected to the cooling element 31. The outlet of the first cooling sub-tube 321, the outlet of the second cooling sub-tube 322 and the outlet of the third cooling sub-tube 323 are all connected to the inlet of the cooling element 31. The cooling pipeline 32 of the above structure is adopted, the inlet of the first cooling sub-tube 321 is connected to the first drying tower 11, the inlet of the second cooling sub-tube 322 is connected to the second drying tower 11, and the inlet of the third cooling sub-tube 323 is connected to the third drying tower 11. The first cooling sub-tube 321, the second cooling sub-tube 322 and the third cooling sub-tube 323 are all provided with a fifth opening and closing valve 47 and are all connected to the cooling element 31. By controlling the opening and closing of the fifth opening and closing valve 47, it is ensured that the corresponding drying tower 11 is connected to the cooling element 31, and then the compressed air and water vapor discharged from the drying tower 11 after heating and regeneration are discharged into the cooling element 31, and the water vapor is condensed, and then the water vapor and compressed air are separated and processed.

[0041] like Figure 1 As shown, the cooling element 31 includes a dry regeneration cooler 311, the outlet of the first cooling sub-tube 321, the outlet of the second cooling sub-tube 322 and the outlet of the third cooling sub-tube 323 are all connected to the inlet of the dry regeneration cooler 311, and the outlet of the dry regeneration cooler 311 can be connected to the drying tower 11 connected to the inlet of the second compressor. The drying device also includes a cooling water pipeline 48, and the inlet of the cooling water pipeline 48 is connected to a water source. The dry regeneration cooler 311 has a cooling chamber, and part of the cooling water pipeline 48 is arranged in the cooling chamber. The outlet of the cooling water pipeline 48 is connected to the outside, and part of the cooling water pipeline 48 in the cooling chamber cools the compressed air entering the cooling chamber. By adopting the above structure, a drying regeneration cooler 311 is set up, and then the outlet of the first cooling sub-tube 321, the outlet of the second cooling sub-tube 322 and the outlet of the third cooling sub-tube 323 are all connected with the inlet of the drying regeneration cooler 311, and the outlet of the drying regeneration cooler 311 can be connected with the drying tower 11 connected to the inlet of the second compressor, and heat exchange is achieved by using the cooling water pipeline 48, and then the compressed air and water vapor discharged from the drying tower 11 after heating and regeneration are discharged into the cooling element 31, the water vapor is condensed, and then the water vapor and compressed air are separated and processed.

[0042] like Figure 1As shown, the cooling element 31 further includes a drying regeneration separator 312 and a second connecting pipe 49, the first end of the second connecting pipe 49 is connected to the outlet of the drying regeneration cooler 311, the second end of the second connecting pipe 49 is connected to the inlet of the drying regeneration separator 312, and the outlet of the drying regeneration separator 312 can be connected to the drying tower 11 connected to the inlet of the second compressor. With the above structure, the compressed air and liquid water can be separated by setting the drying regeneration separator 312, ensuring that the compressed air separated from the liquid water is discharged into the first drying tower 11 for adsorption treatment.

[0043] like Figure 1 As shown, the drying device further includes a precision filter 50, the outlet of the first drying tower 11 is connected to the inlet of the precision filter 50, and the outlet of the precision filter 50 is connected to the inlet of the second compressor. With the above structure, the precision filter 50 can be used to separate and process impurities in the compressed air.

[0044] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0045] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0046] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0047] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0048] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A drying device, characterized in that: The drying device comprises: A drying assembly (10) comprising at least three drying towers (11), wherein the inlet of each drying tower (11) and the outlet of the first compressor can be opened and closed, and the outlet of each drying tower (11) and the inlet of the second compressor can be opened and closed; A heating assembly (20) comprising a heating element (21) and a heating pipeline (22); at least three drying towers (11) are respectively connected to the heating element (21) in an openable and closable manner; when the outlet of the first drying tower (11) is connected to the inlet of the second compressor, the other two drying towers (11) are connected to the heating element (21) through the heating pipeline (22), and the outlet of the first compressor is connected to the inlet of the second drying tower (11) to cool the adsorbent in the drying tower (11); the second drying tower (11) is connected to the inlet of the heating element (21) through the heating pipeline (22) to heat the compressed air; and the outlet of the heating element (21) is connected to the inlet of the third drying tower (11) through the heating pipeline (22) to heat the third drying tower (11); A cooling assembly (30) comprises a cooling element (31) and a cooling pipeline (32), wherein the outlet of each drying tower (11) and the inlet of the cooling element (31) can be opened and closed via the cooling pipeline (32), so that the outlet of the third drying tower (11) is connected to the inlet of the cooling element (31), and the outlet of the cooling element (31) can be connected to the inlet of the first drying tower (11).

2. The drying device according to claim 1, characterized in that: The drying assembly (10) further comprises a first air inlet pipe (12) and a second air inlet pipe (13), wherein a first end of the first air inlet pipe (12) is connected to the outlet of the first compressor, and a second end of the first air inlet pipe (12) can be respectively connected to the inlets of at least three drying towers (11), a first end of the second air inlet pipe (13) is connected to the outlet of the first compressor, and a second end of the second air inlet pipe (13) can be respectively connected to the inlets of at least three drying towers (11), and the drying device further comprises a first opening and closing valve (41) and a second opening and closing valve (42), wherein the first opening and closing valve (41) is arranged on the first air inlet pipe (12), and the second opening and closing valve (42) is arranged on the second air inlet pipe (13), so that a part of the compressed air is passed into the first drying tower (11) to adsorb moisture in the compressed air, and another part of the compressed air is passed into the second drying tower (11) to cool the adsorbent in the drying tower (11).

3. The drying device according to claim 2, characterized in that: The first air inlet pipe (12) comprises a first inlet pipe section (121), a second inlet pipe section (122) and a third inlet pipe section (123); the inlet of the first inlet pipe section (121), the inlet of the second inlet pipe section (122) and the inlet of the third inlet pipe section (123) are all connected to the inlet of the first compressor; the first inlet pipe section (121), the second inlet pipe section (122) and the third inlet pipe section (123) are all provided with the first opening and closing valve (41); the outlet of the first inlet pipe section (121) is connected to the inlet of the first drying tower (11), the outlet of the second inlet pipe section (122) is connected to the inlet of the second drying tower (11), and the outlet of the third inlet pipe section (123) is connected to the inlet of the third drying tower (11); The second air inlet pipe (13) comprises a fourth inlet pipe section (131), a fifth inlet pipe section (132) and a sixth inlet pipe section (133); the inlet of the fourth inlet pipe section (131), the inlet of the fifth inlet pipe section (132) and the inlet of the sixth inlet pipe section (133) are all connected to the inlet of the first compressor; the fourth inlet pipe section (131), the fifth inlet pipe section (132) and the sixth inlet pipe section (133) are all provided with the second on-off valve (42); the outlet of the fourth inlet pipe section (131) is connected to the inlet of the first drying tower (11), the outlet of the fifth inlet pipe section (132) is connected to the inlet of the second drying tower (11), and the outlet of the sixth inlet pipe section (133) is connected to the inlet of the third drying tower (11).

4. The drying device according to any one of claims 1 to 3, characterized in that: The heating pipeline (22) comprises a first heating pipe (221) and a second heating pipe (222), wherein the first end of the first heating pipe (221) can be respectively connected to the outlets of at least three of the drying towers (11), the second end of the first heating pipe (221) can be connected to the inlet of the heating element (21), the inlet of the second heating pipe (222) is connected to the outlet of the heating element (21), and the outlet of the second heating pipe (222) can be selectively and openably connected to the at least three drying towers (11). The drying device further comprises a third opening and closing valve (43) and a fourth opening and closing valve (44), wherein the third opening and closing valve (43) is arranged on the first heating tube (221), and the fourth opening and closing valve (44) is arranged on the second heating tube (222), so that the compressed air discharged from the second drying tower (11) enters the heating element (21) through the first heating tube (221), and the heating element (21) enters the third drying tower (11) through the second heating tube (222) after being heated.

5. The drying device according to claim 4, characterized in that: The first heating tube (221) comprises a first heating sub-tube (2211), a second heating sub-tube (2212) and a third heating sub-tube (2213); the inlet of the first heating sub-tube (2211) is connected to the outlet of the first drying tower (11); the inlet of the second heating sub-tube (2212) is connected to the outlet of the second drying tower (11); the inlet of the third heating sub-tube (2213) is connected to the outlet of the third drying tower (11); the first heating sub-tube (2211), the second heating sub-tube (2212) and the third heating sub-tube (2213) are all provided with the third opening and closing valve (43); the outlet of the first heating sub-tube (2211), the outlet of the second heating sub-tube (2212) and the outlet of the third heating sub-tube (2213) are all connected to the inlet of the heating element (21); The second heating tube (222) comprises a fourth heating sub-tube (2221), a fifth heating sub-tube (2222) and a sixth heating sub-tube (2223); the outlet of the fourth heating sub-tube (2221) is connected to the inlet of the first drying tower (11); the outlet of the fifth heating sub-tube (2222) is connected to the inlet of the second drying tower (11); the outlet of the sixth heating sub-tube (2223) is connected to the inlet of the third drying tower (11); the fourth heating sub-tube (2221), the fifth heating sub-tube (2222) and the sixth heating sub-tube (2223) are all provided with the fourth opening and closing valve (44); the inlet of the fourth heating sub-tube (2221), the inlet of the fifth heating sub-tube (2222) and the inlet of the sixth heating sub-tube (2223) are connected to the outlet of the heating element (21).

6. The drying device according to claim 5, characterized in that: The heating element (21) comprises a drying regeneration heater (211), the outlet of the first heating sub-tube (2211), the outlet of the second heating sub-tube (2212) and the outlet of the third heating sub-tube (2213) are respectively connected to the inlet of the drying regeneration heater (211), the drying device also comprises a steam pipeline (45), the inlet of the steam pipeline (45) is connected to an air source, the drying regeneration heater (211) has a heating chamber, part of the steam pipeline (45) is arranged in the heating chamber, the outlet of the steam pipeline (45) is connected to the outside, and the part of the steam pipeline (45) in the heating chamber heats the compressed air entering the heating chamber.

7. The drying device according to claim 6, characterized in that: The heating element (21) also includes a dry regeneration electric heater (212) and a first connecting pipe (46), wherein the first end of the first connecting pipe (46) is connected to the outlet of the dry regeneration electric heater (211), the second end of the first connecting pipe (46) is connected to the inlet of the dry regeneration electric heater (212), and the inlet of the fourth heating sub-tube (2221), the inlet of the fifth heating sub-tube (2222), and the inlet of the sixth heating sub-tube (2223) are respectively connected to the outlet of the dry regeneration electric heater (212).

8. The drying device according to any one of claims 1 to 3, characterized in that: The cooling pipeline (32) comprises a first cooling sub-tube (321), a second cooling sub-tube (322) and a third cooling sub-tube (323); the inlet of the first cooling sub-tube (321) is connected to the first drying tower (11); the inlet of the second cooling sub-tube (322) is connected to the second drying tower (11); the inlet of the third cooling sub-tube (323) is connected to the third drying tower (11); the first cooling sub-tube (321), the second cooling sub-tube (322) and the third cooling sub-tube (323) are all provided with a fifth opening and closing valve (47) and are all connected to the cooling element (31); the outlet of the first cooling sub-tube (321), the outlet of the second cooling sub-tube (322) and the outlet of the third cooling sub-tube (323) are all connected to the inlet of the cooling element (31).

9. The drying device according to claim 8, characterized in that: The cooling element (31) includes a drying regeneration cooler (311), the outlet of the first cooling sub-tube (321), the outlet of the second cooling sub-tube (322) and the outlet of the third cooling sub-tube (323) are all connected to the inlet of the drying regeneration cooler (311), and the outlet of the drying regeneration cooler (311) can be connected to the drying tower (11) connected to the inlet of the second compressor. The drying device also includes a cooling water pipeline (48), the inlet of the cooling water pipeline (48) is connected to a water source, and the drying regeneration cooler (311) has a cooling chamber, part of the cooling water pipeline (48) is arranged in the cooling chamber, and the outlet of the cooling water pipeline (48) is connected to the outside, and the part of the cooling water pipeline (48) in the cooling chamber cools the compressed air entering the cooling chamber.

10. The drying device according to claim 9, characterized in that: The cooling element (31) also includes a drying regeneration separator (312) and a second connecting pipe (49), wherein the first end of the second connecting pipe (49) is connected to the outlet of the drying regeneration cooler (311), and the second end of the second connecting pipe (49) is connected to the inlet of the drying regeneration separator (312), and the outlet of the drying regeneration separator (312) can be connected to the drying tower (11) which is connected to the inlet of the second compressor.

11. The drying device according to any one of claims 1 to 3, characterized in that: The drying device further comprises a precision filter (50), the outlet of the first drying tower (11) is connected to the inlet of the precision filter (50), and the outlet of the precision filter (50) is connected to the inlet of the second compressor.

Images