Moisture shunting zero-gas-consumption compression heat regeneration type dryer

Abstract

The invention discloses a moisture shunting zero-gas-consumption compression heat regenerative dryer, which relates to the technical field of dryers, and comprises a first tower body, a second tower body, a first cooler, a water removal filter, a dust removal filter, a switching valve group, a pipeline assembly, a second cooler and a PLC (Programmable Logic Controller), through the arrangement of a first tower body, a second tower body, a first cooler, a water removal filter, a dust removal filter, a switching valve group, a pipeline assembly, a second cooler and a PLC (Programmable Logic Controller), the operations of adsorption of the first tower body, heating regeneration of the second tower body, adsorption of the first tower body, cold blowing of the second tower body, standby, parallel adsorption and the like are realized, and the purpose of continuous working is achieved; and the adsorbent can be regenerated by utilizing heat of high-temperature and low-relative-humidity compressed air discharged by the air compressor, so that the adsorbent is dehydrated and dried, and the purpose of zero gas consumption of compressed gas is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of dryers, and particularly to a moisture-shunting zero-air-consumption compressed heat regeneration dryer. Background Art

[0002] At present, in industry, the drying treatment of compressed air usually adopts the adsorption method, that is, the desiccant absorbs the moisture in the compressed air, making the wet air become dry air. Since there is no chemical reaction between the moisture and these desiccants, the amount of the desiccant does not decrease, so there is no need to add extra desiccant usually. However, after a long time of use, as the number of times of adsorbed moisture increases, the drying function will be lost over time.

[0003] In the prior art, the drying treatment of the desiccant is to heat the compressed gas or other regeneration media through an external heating device to heat and evaporate the moisture in the desiccant and discharge it. This operation method consumes extra energy and makes the drying treatment complicated. Summary of the Invention

[0004] The purpose of the present invention is to provide a moisture-shunting zero-air-consumption compressed heat regeneration dryer to solve the above technical problems.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A moisture-shunting zero-air-consumption compressed heat regeneration dryer includes a first tower body, a second tower body, a first cooler, a water removal filter, a dust removal filter, a switching valve group, a pipeline assembly, a second cooler, a third cooler and a PLC controller. The pipeline assembly connects the first tower body and the second tower body. The switching valve group, the first cooler, the second cooler, the third cooler and the water removal filter are arranged on the pipeline assembly. The dust removal filter is arranged at the outlet end of the pipeline assembly. The PLC controller is connected to the first cooler, the second cooler, the water removal filter, the dust removal filter and the switching valve group.

[0007] Preferably, the pipeline assembly includes a first heating pipeline, a second heating pipeline, a third heating pipeline and a fourth heating pipeline. One end of the first heating pipeline is connected to the first tower body. The second heating pipeline connects the first outlet of the first tower body and the first inlet of the second tower body. The third heating pipeline connects the first outlet of the second tower body and the first inlet of the first tower body. The fourth heating pipeline connects the second outlet of the first tower body and the dust removal filter.

[0008] As a further preference, it further includes a first cold blow pipeline, a second cold blow pipeline, a third cold blow pipeline, a fourth cold blow pipeline and a fifth cold blow pipeline. The first cold blow pipeline connects the first heating pipeline and the third heating pipeline. The second cold blow pipeline connects the third heating pipeline and the first outlet of the second tower body. The third cold blow pipeline connects the second heating pipeline and the second inlet of the second tower body. The fourth cold blow pipeline connects the second outlet of the second tower body and the third heating pipeline. The fifth cold blow pipeline connects the third heating pipeline and the first inlet of the first tower body.

[0009] As a further preference, it further includes a first adsorption pipeline and a second adsorption pipeline. The first adsorption pipeline connects the fourth heating pipeline and the second heating pipeline. The second adsorption pipeline connects the second heating pipeline and the fourth heating pipeline.

[0010] As a further preference, a first cooler and a water removal filter are provided on the third heating pipeline. A dust removal filter is provided on the fourth heating pipeline. A second cooler is provided on the fourth cold blow pipeline.

[0011] As a further preference, the switching valve assembly includes a first valve body, a second valve body, a third valve body, a fourth valve body, a fifth valve body and a sixth valve body. The first valve body is provided on the first heating pipeline. The second valve body is provided on the second heating pipeline. The third valve body, the fourth valve body and the fifth valve body are sequentially provided on the third heating pipeline. The sixth valve body is provided on the fourth heating pipeline.

[0012] As a further preference, the switching valve assembly further includes a seventh valve body, an eighth valve body, a ninth valve body and a tenth valve body. The seventh valve body is provided on the first cold blow pipeline. The eighth valve body is provided on the second cold blow pipeline. The ninth valve body is provided on the fourth cold blow pipeline. The tenth valve body is provided on the fifth cold blow pipeline.

[0013] As a further preference, the switching valve assembly further includes an eleventh valve body and a twelfth valve body. The eleventh valve body is provided on the first adsorption pipeline. The twelfth valve body is provided on the second adsorption pipeline.

[0014] As a further preference, it further includes a bypass branch. The bypass branch connects the first heating pipeline and the fourth heating pipeline. The third cooler is provided on the bypass branch.

[0015] The above technical solutions have the following advantages or beneficial effects:

[0016] In the present invention, through the settings of the first tower body, the second tower body, the first cooler, the water removal filter, the dust removal filter, the switching valve group, the pipeline assembly, the second cooler and the PLC controller, operations such as adsorption by the first tower body, heating regeneration of the second tower body, adsorption by the first tower body, cold blow of the second tower body, and standby and parallel adsorption are realized, so as to achieve the purpose of continuous operation; and it can cooperate with an external air compressor, and use the heat of the compressed air discharged by the air compressor with high temperature and low relative humidity to regenerate the adsorbent, dehydrate and dry the adsorbent, thereby achieving the purpose of zero gas consumption for compressed gas. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of a moisture diversion zero-gas-consumption compression heat regeneration dryer in the present invention;

[0018] Figure 2 is a schematic system diagram of a moisture diversion zero-gas-consumption compression heat regeneration dryer in the present invention.

[0019] In the figure: 1, the first tower body; 2, the second tower body; 3, the first cooler; 4, the water removal filter; 5, the dust removal filter; 6, the pipeline assembly; 7, the second cooler; 8, the first heating pipeline; 9, the second heating pipeline; 10, the third heating pipeline; 11, the fourth heating pipeline; 12, the first cold blow pipeline; 13, the second cold blow pipeline; 14, the third cold blow pipeline; 15, the fourth cold blow pipeline; 16, the fifth cold blow pipeline; 17, the first adsorption pipeline; 18, the second adsorption pipeline; 19, the first valve body; 20, the second valve body; 21, the third valve body; 22, the fourth valve body; 23, the fifth valve body; 24, the sixth valve body; 25, the seventh valve body; 26, the eighth valve body; 27, the ninth valve body; 28, the tenth valve body; 29, the eleventh valve body; 30, the twelfth valve body; 31, the PLC controller; 32, the bypass branch; 33, the third cooler. Detailed Embodiments

[0020] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] In the description of the present invention, it should be noted that when terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or positional relationship indicated thereby is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, when terms such as "first", "second", "third" appear, they are only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, when terms such as "installation", "connection", "coupling" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Figure 1 is a schematic structural diagram of the moisture diversion zero-air-consumption compression heat regeneration dryer in the present invention; Figure 2 is a schematic system diagram of the moisture diversion zero-air-consumption compression heat regeneration dryer in the present invention. Please refer to Figures 1 to 2As shown, a preferred embodiment is shown, which is a moisture diversion zero-air-consumption compression heat regeneration dryer, including a first tower body 1, a second tower body 2, a first cooler 3, a water removal filter 4, a dust removal filter 5, a switching valve group, a pipeline assembly 6, a second cooler 7, a third cooler 33 and a PLC controller 31. The pipeline assembly 6 connects the first tower body 1 and the second tower body 2. The switching valve group, the first cooler 3, the second cooler 7, the third cooler 33 and the water removal filter 4 are arranged on the pipeline assembly 6. A dust removal filter 5 is arranged at the outlet end of the pipeline assembly 6. The PLC controller 31 is connected to the first cooler 3, the second cooler 7, the water removal filter 4, the dust removal filter 5 and the switching valve group. In this embodiment, the working states of the switching valve group, the first cooler 3, the water removal filter 4, the dust removal filter 5 and the second cooler 7 can be controlled by the PLC controller 31. Among them, the opening and closing interval time of each valve body in the switching valve group can be controlled by the PLC controller 31. The pipeline assembly 6 can be controlled to be opened or closed through the switching valve group to switch between different working modes. In this embodiment, an air compressor is further included, and the air compressor is connected to the inlet end of the pipeline assembly 6 to facilitate the transportation of unsaturated high-temperature compressed air into the pipeline assembly 6. The heat of the unsaturated high-temperature compressed air is used to regenerate the adsorbent, so that the adsorbent is dehydrated and dried. There is no need to additionally set a heating device, which can save additional energy consumption and simplify the drying treatment steps. The first cooler 3 and the second cooler 7 are provided to cool the gas, and the water removal filter 4 is provided to filter the water in the gas to prevent water from entering the first tower body 1. A regeneration desiccant is arranged in the first tower body 1 and the second tower body 2.

[0024] In this embodiment, the heat of the high-temperature exhaust gas of the air compressor is directly used to heat the regeneration desiccant. Since there is no air consumption during heating regeneration, the energy is saved to the greatest extent.

[0025] Further, as a preferred embodiment, the pipeline assembly 6 includes a first heating pipeline 8, a second heating pipeline 9, a third heating pipeline 10, and a fourth heating pipeline 11. One end of the first heating pipeline 8 is connected to the first tower body 1. The second heating pipeline 9 connects the first outlet of the first tower body 1 and the first inlet of the second tower body 2. The third heating pipeline 10 connects the first outlet of the second tower body 2 and the first inlet of the first tower body 1. The fourth heating pipeline 11 connects the second outlet of the first tower body 1 and the dust removal filter 5. In this embodiment, through the arrangement of the first heating pipeline 8, the second heating pipeline 9, the third heating pipeline 10, and the fourth heating pipeline 11, it is convenient for high-temperature compressed air to enter the second tower body 2, contact the regenerated desiccant in the second tower body 2, take away the moisture of the regenerated desiccant, and then after cooling, water removal and filtration, the saturated water in the compressed air is drained completely. Then it enters the first tower body 1 to adsorb and dry the moisture in the compressed air, and finally enters the dust removal filter 5 through the fourth heating pipeline 11 and is discharged to the gas consumption point. This process is heating regeneration.

[0026] Further, as a preferred embodiment, it further includes a first cold blow pipeline 12, a second cold blow pipeline 13, a third cold blow pipeline 14, a fourth cold blow pipeline 15, and a fifth cold blow pipeline 16. The first cold blow pipeline 12 connects the first heating pipeline 8 and the third heating pipeline. The second cold blow pipeline 13 is connected to the third heating pipeline 10 and the first outlet of the second tower body 2. The third cold blow pipeline 14 connects the second heating pipeline 9 and the second inlet of the second tower body 2. The fourth cold blow pipeline 15 connects the second outlet of the second tower body 2 and the third heating pipeline 10. The fifth cold blow pipeline 16 connects the third heating pipeline 10 and the first inlet of the first tower body 1. Through the arrangement of the first cold blow pipeline 12, the second cold blow pipeline 13, the third cold blow pipeline 14, the fourth cold blow pipeline 15, and the fifth cold blow pipeline 16, the compressed air enters the second tower body 2 after cooling, water removal and filtration to cool the regenerated desiccant, and then the compressed air enters the first tower body 1. Finally, it enters the dust removal filter 5 through the fourth heating pipeline 11 for treatment and is discharged to the gas consumption point. This process is cold blow regeneration.

[0027] Further, as a preferred embodiment, it further includes a first adsorption pipeline 17 and a second adsorption pipeline 18. The first adsorption pipeline 17 connects the fourth heating pipeline 11 and the second heating pipeline 9. The second adsorption pipeline 18 connects the second heating pipeline 9 and the fourth heating pipeline 11. The first adsorption pipeline 17 is interconnected with the fourth heating pipeline 11 and the second heating pipeline 9. The second adsorption pipeline 18 is interconnected with the second heating pipeline 9 and the fourth heating pipeline 11.

[0028] Further, as a preferred embodiment, a first cooler 3 and a water removal filter 4 are provided on the third heating pipeline 10, a dust removal filter 5 is provided on the fourth heating pipeline 11, and a second cooler 7 is provided on the fourth cold blow pipeline 15.

[0029] Further, as a preferred embodiment, the switching valve assembly includes a first valve body 19, a second valve body 20, a third valve body 21, a fourth valve body 22, a fifth valve body 23, and a sixth valve body 24. The first valve body 19 is provided on the first heating pipeline 8, the second valve body 20 is provided on the second heating pipeline 9, the third valve body 21, the fourth valve body 22, and the fifth valve body 23 are sequentially provided on the third heating pipeline 10, and the sixth valve body 24 is provided on the fourth heating pipeline 11. The first valve body 19, the second valve body 20, the third valve body 21, the fourth valve body 22, the fifth valve body 23, and the sixth valve body 24 can all be solenoid valves, which are used to connect to the PLC controller 31, and the PLC controller 31 can control the opening or closing of the first valve body 19, the second valve body 20, the third valve body 21, the fourth valve body 22, the fifth valve body 23, and the sixth valve body 24.

[0030] Further, as a preferred embodiment, the switching valve assembly further includes a seventh valve body 25, an eighth valve body 26, a ninth valve body 27, and a tenth valve body 28. The seventh valve body 25 is provided on the first cold blow pipeline 12, the eighth valve body 26 is provided on the second cold blow pipeline 13, the ninth valve body 27 is provided on the fourth cold blow pipeline 15, and the tenth valve body 28 is provided on the fifth cold blow pipeline 16. The seventh valve body 25, the eighth valve body 26, the ninth valve body 27, and the tenth valve body 28 in this embodiment are all solenoid valves and are used to connect to the PLC controller 31.

[0031] Further, as a preferred embodiment, the switching valve assembly further includes an eleventh valve body 29 and a twelfth valve body 30. The eleventh valve body 29 is provided on the first adsorption pipeline 17, and the twelfth valve body 30 is provided on the second adsorption pipeline 18. The eleventh valve body 29 and the twelfth valve body 30 are both solenoid valves and are used to connect to the PLC controller 31. Among them, the distribution positions of the first valve body 19, the second valve body 20, the third valve body 21, the fourth valve body 22, the fifth valve body 23, the sixth valve body 24, the seventh valve body 25, the eighth valve body 26, the ninth valve body 27, the tenth valve body 28, the eleventh valve body 29, and the twelfth valve body 30 on each pipeline can be referred to Figure 2As shown in the figure. By controlling the opening or closing of different valve bodies, the first tower body 1 can perform adsorption, the second tower body 2 can perform heating regeneration; the first tower body 1 can perform adsorption, the second tower body 2 can perform blowing and cooling regeneration; the first tower body 1 can perform adsorption, the second tower body 2 can be in standby; the first tower body 1 can perform adsorption, the second tower body 2 can perform adsorption; the second tower body 2 can perform adsorption, the first tower body 1 can perform heating regeneration; the second tower body 2 can perform adsorption, the first tower body 1 can perform blowing and cooling regeneration; the second tower body 2 can perform adsorption, the first tower body 1 can be in standby; the second tower body 2 can perform adsorption, the first tower body 1 can perform adsorption, etc. By repeating this process continuously, the purpose of continuous operation can be achieved.

[0032] Furthermore, as a preferred embodiment, the bypass branch 32 is connected to the first heating pipeline 8 and the fourth heating pipeline 11, and the third cooler 33 is provided on the bypass branch 32. The third cooler 33 can directly cool the compressed air and then introduce the cooled compressed air into the dust removal filter 5.

[0033] The following takes the adsorption of the first tower body 1 as an example for illustration;

[0034] When the first tower body 1 performs adsorption and the second tower body 2 performs heating regeneration, first, the high-temperature compressed air will enter the second tower body 2 after passing through the first valve body 19 and the second valve body 20, taking away the moisture of the regenerated desiccant inside, and then passing through the third valve body 21, the fourth valve body 22, the first cooler 3, the second cooler 7 and the fifth valve body 23, and then entering the first tower body 1, and then passing through the sixth valve body 24 and entering the dust removal filter 5 for filtration, and then being discharged to the gas-using point.

[0035] When the first tower body 1 performs adsorption and the second tower body 2 performs blowing and cooling regeneration, the seventh valve body 25 is opened, and the first valve body 19 and the fourth valve body 22 are closed. At this time, the compressed air will pass through the seventh valve body 25, the first cooler 3, the water removal filter 4 and the eighth valve body 26 and then enter the second tower body 2 to cool the regenerated desiccant, and then pass through the second valve body 20 and the third cold blowing pipeline 14 and enter the second tower body 2 again, and then enter the first tower body 1 through the ninth valve body 27 and the tenth valve body 28, and then pass through the sixth valve body 24 and enter the dust removal filter 5 for filtration and then be discharged to the gas-using point.

[0036] When the first tower body 1 performs adsorption and the second tower body 2 is in standby, the fifth valve body 23 is opened, and the ninth valve body 27, the eighth valve body 26 and the second valve body 20 are closed, and the standby program is entered. The standby time refers to the duration between the end of cooling and the switching between the first tower body 1 and the second tower body 2. When the drying working time set by the PLC controller 31 is reached or a pressure dew point warning appears, the standby time ends. When the cooling process ends, the ninth valve body 27, the tenth valve body 28, the eighth valve body 26 and the second valve body 20 will be automatically closed, and the fifth valve body 23 will be opened.

[0037] When the first tower body 1 adsorbs and the second tower body 2 adsorbs, after standby, open the eighth valve body 26 and the twelfth valve body 30, and enter the program of the first tower body 1 adsorbing and the second tower body 2 adsorbing, waiting for the next switch with thermal regeneration, that is, open the first valve body 19, the fourth valve body 22, the tenth valve body 28, the eleventh valve body 29 and the twelfth valve body 30, close the seventh valve body 25, the fifth valve body 23 and the sixth valve body 24, enter the adsorption of the second tower body 2, and the first tower body 1 has a thermal regeneration process. Repeat this process in a cycle to achieve the purpose of continuous operation.

[0038] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention accordingly. For those skilled in the art, it should be realized that all the solutions obtained by equivalent substitution and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A wet gas split zero gas consumption compression heat regeneration dryer, characterized in that: The utility model comprises a first tower body, a second tower body, a first cooler, a water removal filter, a dust removal filter, a switching valve group, a pipeline assembly, a second cooler, a third cooler, and a PLC controller. The pipeline assembly connects the first tower body and the second tower body. The switching valve group, the first cooler, the second cooler, the third cooler and the water removal filter are arranged on the pipeline assembly. The dust removal filter is arranged at the outlet end of the pipeline assembly. The PLC controller connects the first cooler, the second cooler, the water removal filter, the dust removal filter and the switching valve group.

2. The wet gas split zero gas consumption compression heat regeneration dryer according to claim 1, characterized in that: The pipeline assembly includes a first heating pipeline, a second heating pipeline, a third heating pipeline and a fourth heating pipeline, one end of the first heating pipeline is connected to the first tower body, the second heating pipeline is connected to the first outlet of the first tower body and the first inlet of the second tower body, the third heating pipeline is connected to the first outlet of the second tower body and the first inlet of the first tower body, and the fourth heating pipeline is connected to the second outlet of the first tower body and the dust removal filter.

3. The wet gas split zero gas consumption compression heat regeneration dryer according to claim 2, characterized in that: It also includes a first cold blow pipeline, a second cold blow pipeline, a third cold blow pipeline, a fourth cold blow pipeline and a fifth cold blow pipeline. The first cold blow pipeline connects the first heating pipeline and the third heating pipeline, the second cold blow pipeline connects the third heating pipeline and the first outlet of the second tower body, the third cold blow pipeline connects the second heating pipeline and the second inlet of the second tower body, the fourth cold blow pipeline connects the second outlet of the second tower body and the third heating pipeline, and the fifth cold blow pipeline connects the third heating pipeline and the first inlet of the first tower body.

4. The wet gas split zero gas consumption compression heat regeneration dryer according to claim 3, characterized in that: The system further comprises a first adsorption pipeline and a second adsorption pipeline, wherein the first adsorption pipeline is connected to the fourth heating pipeline and the second heating pipeline, and the second adsorption pipeline is connected to the second heating pipeline and the fourth heating pipeline.

5. The wet gas split zero gas consumption compression heat regeneration dryer according to claim 3, characterized in that: The first cooler and the water removal filter are arranged on the third heating pipeline, the dust removal filter is arranged on the fourth heating pipeline, and the second cooler is arranged on the fourth cold blowing pipeline.

6. The wet gas split zero gas consumption compression heat regeneration dryer according to claim 4, characterized in that: The switching valve assembly includes a first valve body, a second valve body, a third valve body, a fourth valve body, a fifth valve body and a sixth valve body. The first valve body is arranged on the first heating pipeline, the second valve body is arranged on the second heating pipeline, the third valve body, the fourth valve body and the fifth valve body are arranged in sequence on the third heating pipeline, and the sixth valve body is arranged on the fourth heating pipeline.

7. The wet gas split zero gas consumption compression heat regeneration dryer according to claim 4, characterized in that: The switching valve assembly also includes a seventh valve body, an eighth valve body, a ninth valve body and a tenth valve body. The seventh valve body is arranged on the first cold blow pipeline, the eighth valve body is arranged on the second cold blow pipeline, the ninth valve body is arranged on the fourth cold blow pipeline, and the tenth valve body is arranged on the fifth cold blow pipeline.

8. The wet gas split zero gas consumption compression heat regeneration dryer according to claim 4, characterized in that: The switching valve assembly further includes an eleventh valve body and a twelfth valve body. The eleventh valve body is disposed on the first adsorption pipeline, and the twelfth valve body is disposed on the second adsorption pipeline.

9. The wet gas split zero gas consumption compression heat regeneration dryer according to claim 2, characterized in that: It also includes a bypass branch, which connects the first heating pipeline and the fourth heating pipeline, and the third cooler is arranged on the bypass branch.

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