CN220899986U - Drying machine - Google Patents

Abstract

The application provides a dryer, which comprises a pipeline, a first tower, a second tower, a first cooler and a plurality of valves, wherein the pipeline comprises an air inlet pipeline, a cold blowing pipeline and an air outlet pipeline; the second ends of the first tower and the second tower are respectively connected with an air inlet pipeline through corresponding valves; the cold blowing pipeline comprises a cold blowing main pipe, a first cold blowing branch pipe and a second cold blowing branch pipe, wherein the cold blowing main pipe is arranged on the air outlet pipeline and is positioned between two opposite ends of the air outlet pipeline; a first valve and a second valve are respectively arranged in the first cold blowing branch pipe and the second cold blowing branch pipe; the first end of the first tower and the first end of the second tower are connected with the cold blowing main pipe through a first cold blowing branch pipe and a second cold blowing branch pipe respectively; the first cooler is arranged in the cold blowing main pipe, so that energy loss can be avoided.

Description

Drying machine

Technical Field

The application relates to the technical field of drying, in particular to a dryer.

Background

At present, the working principle of the dryer is as follows: the first tower of the dryer is subjected to adsorption drying, the second tower of the dryer is regenerated and then subjected to cold blowing, and then the first tower and the second tower are subjected to mode switching at fixed working time. The sum of the time for regeneration and the time for cold blowing is equal to the time for adsorption drying, and the time for regeneration, the time for cold blowing and the time for adsorption drying are respectively fixed time. However, the temperature of air is higher when the existing dryer performs cold blowing, so that the duration of performing cold blowing is longer, and more air is consumed during cold blowing, thus energy loss is caused.

Disclosure of utility model

In view of the above, it is necessary to provide a dryer which can avoid energy loss.

A dryer comprising a conduit, a first tower, a second tower, a first cooler, and a plurality of valves, wherein: the pipeline comprises an air inlet pipeline, a cold blowing pipeline and an air outlet pipeline, wherein the air inlet pipeline is used for enabling high-temperature compressed air to enter the first tower or the second tower, the cold blowing pipeline is connected with the air outlet pipeline, the first cooler is arranged in the cold blowing pipeline and used for cooling and drying air flowing through the cold blowing pipeline, and the air outlet pipeline is used for discharging dry air dried by the first tower or the second tower out of the first tower or the second tower; the first end of the first tower and the first end of the second tower are respectively connected with the air inlet pipeline through corresponding valves, the first end of the first tower and the first end of the second tower are respectively connected with the air outlet pipeline through corresponding valves, and the first end of the first tower and the first end of the second tower are respectively connected with the cold blowing pipeline through a first valve and a second valve in the plurality of valves; the second end of the first tower and the second end of the second tower are respectively connected with an air inlet pipeline through corresponding valves; the cold blowing pipeline comprises a cold blowing main pipe, a first cold blowing branch pipe and a second cold blowing branch pipe, wherein the cold blowing main pipe is arranged on the air outlet pipeline and is positioned between two opposite ends of the air outlet pipeline; a first valve and a second valve are respectively arranged in the first cold blowing branch pipe and the second cold blowing branch pipe; the first end of the first tower and the first end of the second tower are connected with the cold blowing main pipe through a first cold blowing branch pipe and a second cold blowing branch pipe respectively; the first cooler is installed in the cold blow main pipe.

In one embodiment, the plurality of valves further comprises a third valve and a fourth valve, and the first end of the first tower and the first end of the second tower are connected with the air outlet pipeline through the third valve and the fourth valve respectively; the air outlet pipeline comprises an air outlet main pipe, a first air outlet branch pipe and a second air outlet branch pipe, the air outlet main pipe is used for discharging dry air out of the dryer, and a third valve and a fourth valve are respectively arranged in the first air outlet branch pipe and the second air outlet branch pipe; the cold blowing main pipe is arranged on the air outlet main pipe and is positioned between two opposite ends of the air outlet main pipe; the first end of the first tower and the first end of the second tower are connected with the air outlet main pipe through the first air outlet branch pipe and the second air outlet branch pipe respectively.

In one embodiment, the plurality of valves further includes a fifth valve, a sixth valve, and a seventh valve, the first end of the first tower and the first end of the second tower are connected to the air intake pipe through the fifth valve and the sixth valve, respectively, and the second end of the first tower and the second end of the second tower are connected to the air intake pipe through the seventh valve; the air inlet pipeline comprises an air inlet main pipe, a first air inlet branch pipe, a second air inlet branch pipe and a third air inlet branch pipe, wherein the air inlet main pipe is used for enabling high-temperature compressed air to enter the first air inlet branch pipe, the second air inlet branch pipe and the third air inlet branch pipe; a fifth valve, a sixth valve and a seventh valve are respectively arranged in the first air inlet branch pipe, the second air inlet branch pipe and the third air inlet branch pipe; the first end of the first tower and the first end of the second tower are connected with the air inlet main pipe through a first air inlet branch pipe and a second air inlet branch pipe respectively, and the second end of the first tower and the second end of the second tower are connected with the air inlet main pipe through a third air inlet branch pipe.

In one embodiment, the plurality of valves further comprises an eighth valve and a ninth valve, and the second end of the first tower and the second end of the second tower are further connected to the air intake pipe through the eighth valve and the ninth valve, respectively; the dryer also comprises a second cooler, a gas-liquid separator, a first bypass branch pipe and a second bypass branch pipe, wherein the second cooler is connected between the third air inlet branch pipe and the gas-liquid separator, and an eighth valve and a ninth valve are respectively arranged in the first bypass branch pipe and the second bypass branch pipe; the second end of the first tower and the second end of the second tower are connected with the gas-liquid separator through a first bypass branch pipe and a second bypass branch pipe respectively.

In one embodiment, the valve is a one-way valve.

In one embodiment, the dryer includes an adsorption passage for high temperature compressed air to enter the first tower, an air outlet passage for discharging dry air exhausted from the first tower out of the dryer, and a cold blow passage for cooling and drying the dry air exhausted from the first tower and for cooling and drying the dry air to enter the second tower.

In one embodiment, the first column is used for adsorption drying and the second column is used for cold blowing.

In one embodiment, the dryer includes an adsorption passage for high temperature compressed air to enter the first tower, a regeneration passage for high temperature compressed air to enter the second tower, and an air outlet passage for discharging dry air discharged from the first tower out of the dryer.

In one embodiment, the dryer further comprises a dew point sensor and a control system, the dew point sensor is arranged at the outlet of the air outlet pipeline, the dew point sensor is used for detecting the dew point of the dry air exhausted through the air outlet pipeline, the dew point sensor is connected with the control system, and the control system is used for obtaining the dew point of the dry air exhausted through the air outlet pipeline from the dew point sensor.

In one embodiment, the first tower and the second tower each include a tub for receiving an adsorbent, the dryer further includes a temperature sensor disposed on the tub of the first tower and the second tower and in contact with the adsorbent in the tub, the temperature sensor being for determining a temperature of the adsorbent in the tub of the first tower and the second tower, the temperature sensor being coupled to the control system, and the control system being for obtaining the temperature of the adsorbent in the tub of the first tower and the second tower from the temperature sensor.

The air inlet pipeline of the dryer is used for enabling high-temperature compressed air to enter the first tower or the second tower, the first end of the first tower and the first end of the second tower are connected with the air inlet pipeline through corresponding valves respectively, and the second end of the first tower and the second end of the second tower are connected with the air inlet pipeline through corresponding valves respectively, so that the high-temperature compressed air can enter the first tower from the first end of the first tower or the second end of the first tower and can enter the second tower from the first end of the second tower or the second end of the second tower; the air outlet pipeline of the dryer is used for discharging the dry air out of the first tower or the second tower, and the first end of the first tower and the first end of the second tower are respectively connected with the air outlet pipeline through corresponding valves, so that the dry air can be discharged out of the first tower or the second tower from the first end of the first tower or the first end of the second tower; the cold blowing pipeline of desiccator is responsible for including cold blowing, first cold blowing branch pipe and second cold blowing branch pipe, and the cold blowing is responsible for the setting on the pipeline of giving vent to anger, and is located between the relative both ends of pipeline of giving vent to anger, and the first end of first tower and the first end of second tower are responsible for with cold blowing through first cold blowing branch pipe and second cold blowing branch pipe respectively and are connected, and first valve and second valve are installed respectively in first cold blowing branch pipe and second cold blowing branch pipe, and first cooler is installed in the cold blowing is responsible for to can cool down the drying to the air that flows through the cold blowing pipeline. Therefore, the dryer can quickly reduce the temperature of the drying air, and the duration of cold blowing is reduced, so that the air quantity consumed during cold blowing is reduced, and the energy loss is avoided.

Drawings

Fig. 1 is a schematic diagram of a dryer according to an embodiment of the present application.

Fig. 2 is another structural schematic diagram of a dryer according to an embodiment of the present application.

Fig. 3 is a schematic diagram of a gas flow direction in the dryer according to an embodiment of the present application.

Fig. 4 is a schematic diagram of another gas flow direction in the dryer according to an embodiment of the present application.

Fig. 5 is a flowchart of the operation of the dryer according to the embodiment of the present application.

Description of the main reference signs

Dryer 1

Pipeline 10

First tower 20

Second column 30

First cooler 40

Valve 50

Intake duct 110

Cold blow pipe 120

Air outlet pipe 130

First ends 210, 310

Second ends 220, 320

First valve V1

Second valve V2

Cold blowing main pipe 121

First cold blow branch pipe 122

Second cold blow branch pipe 123

Third valve V3

Fourth valve V4

Air outlet main pipe 131

First outlet manifold 132

Second outlet branch pipe 133

Fifth valve V5

Sixth valve V6

Seventh valve V7

Eighth valve V8

Air intake main pipe 111

First intake branch pipe 112

Second intake branch 113

Third intake manifold 114

Ninth valve V9

Second cooler 60

Gas-liquid separator 70

First bypass branch pipe 80

Second bypass branch 90

Tenth valve V10

Eleventh valve V11

Dew point sensor 100

Temperature sensor 101

The application will be further described in the following detailed description in conjunction with the above-described figures.

Detailed Description

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. It will be understood by those of ordinary skill in the art that the terms described above have their specific meanings in the present application as appropriate.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The terms "comprising" and "having" and any variations thereof, in the description of the application and the claims and the above description of the drawings, are intended to cover non-exclusive inclusions.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

At present, the working principle of the dryer is as follows: the first tower of the dryer is subjected to adsorption drying, the second tower of the dryer is regenerated and then subjected to cold blowing, and then the first tower and the second tower are subjected to mode switching at fixed working time. When the second tower regenerates, the external high temperature air can enter the second tower, and the water adsorbed on the adsorbent in the second tower is evaporated and carried out of the dryer, so that the adsorption capacity of the adsorbent in the second tower can be enhanced. The sum of the time for regeneration and the time for cold blowing is equal to the time for adsorption drying, and the time for regeneration, the time for cold blowing and the time for adsorption drying are respectively fixed time. For example, the regeneration is performed for 2 hours, the cold blowing is performed for 2 hours, and the adsorption drying is performed for 4 hours. However, the temperature of air is higher when the existing dryer carries out cold blowing, so that the duration of cold blowing is longer, and more air is consumed during cold blowing, thus energy loss can be caused.

Therefore, the embodiment of the application provides the dryer 1, which can quickly reduce the temperature of drying air and reduce the duration of cold blowing, thereby reducing the air quantity consumed during cold blowing and avoiding energy loss.

Referring to fig. 1-2, the dryer 1 includes a duct 10, a first tower 20, a second tower 30, a first cooler 40, and a plurality of valves 50, wherein the duct 10 includes an air inlet duct 110, a cold blow duct 120, and an air outlet duct 130, and the air inlet duct 110 is used for supplying external compressed air at high temperature into the first tower 20 or the second tower 30. In some embodiments, the high temperature compressed air may be 120 ℃ (degrees celsius) of high temperature compressed air generated by an air compressor. It is understood that the source and temperature of the high temperature compressed air may also be other sources and temperatures, for example, the temperature of the high temperature compressed air may also be at least 80 ℃, as the application is not limited in this regard. The cold blowing duct 120 is connected to the air outlet duct 130, and the first cooler 40 is installed in the cold blowing duct 120, and the first cooler 40 is used for cooling and drying air flowing through the cold blowing duct 120. The air outlet duct 130 is used to discharge the dry air dried by the first tower 20 or the second tower 30 out of the first tower 20 or the second tower 30.

In some embodiments, as shown in fig. 1, the first end 210 of the first column 20 and the first end 310 of the second column 30 are respectively connected to the air inlet duct 110 by corresponding valves 50, and the first end 210 of the first column 20 and the first end 310 of the second column 30 are respectively connected to the air outlet duct 130 by corresponding valves 50, and the first end 210 of the first column 20 and the first end 310 of the second column 30 are also respectively connected to the cold blow duct 120 by corresponding valves 50. As shown in fig. 2, the second end 220 of the first tower 20 and the second end 320 of the second tower 30 are each connected to the intake conduit 110 by a corresponding valve 50.

In some embodiments, as shown in FIGS. 1-2, each valve 50 is a one-way valve. The plurality of valves 50 includes a first valve V1 and a second valve V2, and the first end 210 of the first column 20 and the first end 310 of the second column 30 are connected to the cold blow pipe 120 through the first valve V1 and the second valve V2, respectively. The cold blow pipe 120 includes a cold blow main pipe 121, a first cold blow branch pipe 122, and a second cold blow branch pipe 123. The cold blow main pipe 121 is disposed on the air outlet pipe 130 and is located between opposite ends of the air outlet pipe 130. A first valve V1 and a second valve V2 are installed in the first cold blow branch pipe 122 and the second cold blow branch pipe 123, respectively, the first valve V1 being for controlling an open/close state of the first cold blow branch pipe 122, and the second valve V2 being for controlling an open/close state of the second cold blow branch pipe 123.

In some embodiments, the first end 210 of the first column 20 and the first end 310 of the second column 30 are connected to the cold blow header 121 by a first cold blow leg 122 and a second cold blow leg 123, respectively. The first cooler 40 is installed in the cold blow main pipe 121, and the first cooler 40 is used for cooling and drying air flowing through the cold blow main pipe 121.

The air inlet pipe 110 of the dryer 1 is used for allowing high-temperature compressed air to enter the first tower 20 or the second tower 30, the first end 210 of the first tower 20 and the first end 310 of the second tower 30 are respectively connected with the air inlet pipe 110 through corresponding valves 50 (see fig. 1), and the second end 220 of the first tower 20 and the second end 320 of the second tower 30 are respectively connected with the air inlet pipe 110 through corresponding valves 50 (see fig. 2), so that the high-temperature compressed air can enter the first tower 20 from the first end 210 of the first tower 20 or the second end 220 of the first tower 20, and can enter the second tower 30 from the first end 310 of the second tower 30 or the second end 320 of the second tower 30; the air outlet pipe 130 of the dryer 1 is used to discharge the dry air out of the first tower 20 or the second tower 30, and the first end 210 of the first tower 20 and the first end 310 of the second tower 30 are connected to the air outlet pipe 130 through corresponding valves 50 (see fig. 1), respectively, so that the dry air can be discharged out of the first tower 20 or the second tower 30 from the first end 210 of the first tower 20 or the first end 310 of the second tower 30; the cold blowing pipe 120 of the dryer 1 includes a cold blowing main pipe 121, a first cold blowing branch pipe 122 and a second cold blowing branch pipe 123, the cold blowing main pipe 121 is disposed on the air outlet pipe 130 and between opposite ends of the air outlet pipe 130, the first end 210 of the first tower 20 and the first end 310 of the second tower 30 are connected with the cold blowing main pipe 121 through the first cold blowing branch pipe 122 and the second cold blowing branch pipe 123, respectively, the first valve V1 and the second valve V2 are installed in the first cold blowing branch pipe 122 and the second cold blowing branch pipe 123, respectively, and the first cooler 40 is installed in the cold blowing main pipe 121, thereby cooling and drying air flowing through the cold blowing pipe 120. Therefore, the dryer 1 can quickly reduce the temperature of the drying air, reduce the duration of cold blowing, reduce the air quantity consumed during cold blowing, and avoid energy loss.

In some embodiments, as shown in fig. 1-2, the plurality of valves 50 further includes a third valve V3 and a fourth valve V4, and the first end 210 of the first column 20 and the first end 310 of the second column 30 are connected to the gas outlet pipe 130 through the third valve V3 and the fourth valve V4, respectively. The outlet pipe 130 includes an outlet main pipe 131, a first outlet branch pipe 132, and a second outlet branch pipe 133. The air outlet main pipe 131 is used for discharging the drying air out of the dryer 1. A third valve V3 and a fourth valve V4 are installed in the first and second outlet branch pipes 132 and 133, respectively, the third valve V3 being for controlling the open/close state of the first outlet branch pipe 132, and the fourth valve V4 being for controlling the open/close state of the second outlet branch pipe 133. The cold blowing main pipe 121 is disposed on the air outlet main pipe 131 and is located between opposite ends of the air outlet main pipe 131. The first end 210 of the first tower 20 and the first end 310 of the second tower 30 are connected to the main outlet pipe 131 through the first outlet branch pipe 132 and the second outlet branch pipe 133, respectively. Thus, the dry air in the first tower 20 or the second tower 30 may be partially discharged from the respective first ends out of the dryer 1 and partially enter the cold blowing main pipe 121 through the air outlet main pipe 131, the first air outlet branch pipe 132, the second air outlet branch pipe 133, the third valve V3, and the fourth valve V4.

It can be understood that the air outlet main pipe 131 can be used for air outlet and can also be used as a cold blowing branch pipe for guiding air to be cold blown during cold blowing; the first outlet branch 132 may be used not only for outlet but also as a cold blowing branch for guiding air for cold blowing at the time of cold blowing.

In some embodiments, the plurality of valves 50 further includes a fifth valve V5, a sixth valve V6, and a seventh valve V7, the first end 210 of the first tower 20 and the first end 310 of the second tower 30 are connected to the intake conduit 110 through the fifth valve V5 and the sixth valve V6, respectively, and the second end 220 of the first tower 20 and the second end 320 of the second tower 30 are connected to the intake conduit 110 through the seventh valve V7. The intake duct 110 includes an intake main pipe 111, a first intake branch pipe 112, a second intake branch pipe 113, and a third intake branch pipe 114. The intake main pipe 111 is used for high-temperature compressed air to enter the first intake branch pipe 112, the second intake branch pipe 113, and the third intake branch pipe 114. A fifth valve V5, a sixth valve V6, and a seventh valve V7 are installed in the first intake manifold 112, the second intake manifold 113, and the third intake manifold 114, respectively. The fifth valve V5 is used to control the open/close state of the first intake branch pipe 112. The sixth valve V6 is for controlling the open/close state of the second intake branch pipe 113. The seventh valve V7 is used to control the open/close state of the third intake branch pipe 114. The first end 210 of the first tower 20 and the first end 310 of the second tower 30 are connected to the intake main 111 through the first and second intake branches 112 and 113, respectively. The second end 220 of the first tower 20 and the second end 320 of the second tower 30 are connected to the inlet main 111 through the third inlet branch 114. Thus, high temperature compressed air may enter the first tower 20 or the second tower 30 from the first end 210 of the first tower 20 or the first end 310 of the second tower 30, and may enter the first tower 20 or the second tower 30 from the second end 220 of the first tower 20 or the second end 320 of the second tower 30, through the inlet main pipe 111, the first inlet branch pipe 112, the second inlet branch pipe 113, the third inlet branch pipe 114, the fifth valve V5, the sixth valve V6, and the seventh valve V7.

It is understood that the intake main pipe 111 may be used not only for intake air but also as an adsorption main pipe for guiding air for adsorption at the time of adsorption, and may also be used as a regeneration main pipe for guiding air for regeneration at the time of regeneration. The second intake branch 113 may be used not only for intake air but also as a regeneration branch for guiding air for regeneration at the time of regeneration. The third intake manifold 114 may be used not only for intake air, but also as an adsorption manifold for guiding air for adsorption at the time of adsorption.

In some embodiments, the plurality of valves 50 further includes an eighth valve V8 and a ninth valve V9, and the second end 220 of the first column 20 and the second end 320 of the second column 30 are further connected to the intake conduit 110 via the eighth valve V8 and the ninth valve V9, respectively. The dryer 1 further comprises a second cooler 60, a gas-liquid separator 70, a first bypass branch 80 and a second bypass branch 90, the second cooler 60 being connected between the third inlet branch 114 and the gas-liquid separator 70. In some embodiments, second cooler 60 and gas-liquid separator 70 are disposed in series between third inlet leg 114 and first bypass leg 80, and between third inlet leg 114 and second bypass leg 90. The second cooler 60 is used to cool the high temperature compressed air flowing from the third intake branch pipe 114 into the first bypass branch pipe 80 or the second bypass branch pipe 90, for example, cool the 120 c high temperature compressed air flowing from the third intake branch pipe 114 into the first bypass branch pipe 80 into 40 c compressed air. The gas-liquid separator 70 is used for filtering out part of the moisture in the cooled compressed air, for example, filtering out part of the moisture in the compressed air at 40 ℃ so that the compressed air at 40 ℃ becomes saturated air at 40 ℃. An eighth valve V8 and a ninth valve V9 are installed in the first bypass branch pipe 80 and the second bypass branch pipe 90, respectively. The eighth valve V8 is used to control the open/close state of the first bypass branch pipe 80. A ninth valve V9 is used to control the open/close state of the second bypass branch pipe 90. Both the first bypass branch 80 and the second bypass branch 90 may serve as adsorption branches for guiding air for adsorption at the time of adsorption. The second end 220 of the first column 20 and the second end 320 of the second column 30 are connected to the gas-liquid separator 70 via the first bypass branch 80 and the second bypass branch 90, respectively. Thus, the high temperature compressed air entering from the main intake pipe 111 and the third intake manifold 114 may be cooled and filtered to remove moisture prior to entering the first tower 20 through the second end 220 of the first tower 20 or entering the second tower 30 through the second end 320 of the second tower 30.

For convenience of description, the following will be exemplified by taking the compressed air of high temperature of 120 c as the compressed air of high temperature, and taking the saturated air of 40 c as the air after the compressed air of high temperature passes through the second cooler 60 and the gas-liquid separator 70.

In some embodiments, referring to fig. 3-4 together, dryer 1 includes an adsorption channel for high temperature compressed air to enter first tower 20, a regeneration channel for high temperature compressed air to enter second tower 30, and an outlet channel for dry air exiting first tower 20 to exit dryer 1. Wherein the first column 20 is used for adsorption drying and the second column 30 is used for regeneration.

In some embodiments, the dryer 1 includes an adsorption passage for high temperature compressed air to enter the first tower 20, an air outlet passage for discharging dry air discharged from the first tower 20 out of the dryer 1, and a cold blow passage for cool-down drying the dry air discharged from the first tower 20 and for cool-down drying the dry air to enter the second tower 30. Wherein the first column 20 is used for adsorption drying and the second column 30 is used for cold blowing.

The plurality of valves 50 may realize a first mode of the dryer 1, a second mode of the dryer 1, a third mode of the dryer 1, and a fourth mode of the dryer 1 by combining different states thereof. The first mode is where the first column 20 is adsorption-dried and the second column 30 is regenerated. The second mode is that the first column 20 performs adsorption drying and the second column 30 performs cold blowing. The third mode is where the second column 30 is adsorption-dried and the first column 20 is regenerated. The fourth mode is that the second column 30 performs adsorption drying and the first column 20 performs cold blowing. The correspondence between the state combinations of the plurality of valves 50 and the respective modes is shown in table 1 below:

TABLE 1

Valve

V1

V2

V3

V4

V5

V6

V7

V8

V9

First mode

Closing the door

Closing the door

Opening device

Closing the door

Closing the door

Opening device

Opening device

Opening device

Closing the door

Second mode

Closing the door

Opening device

Opening device

Closing the door

Closing the door

Closing the door

Opening device

Opening device

Closing the door

Third mode

Closing the door

Closing the door

Closing the door

Opening device

Opening device

Closing the door

Opening device

Closing the door

Opening device

Fourth mode

Opening device

Closing the door

Closing the door

Opening device

Closing the door

Closing the door

Opening device

Closing the door

Opening device

In the first mode, as shown in fig. 3, the seventh valve V7 is opened, the third intake branch pipe 114 is opened, and the intake main pipe 111 communicates with the third intake branch pipe 114. The ninth valve V9 is closed and the second bypass branch 90 is closed. The high temperature compressed air cannot enter the second tower 30 from the second end 320 of the second tower 30 through the main inlet pipe 111, the third inlet branch pipe 114 and the second bypass branch pipe 90. The eighth valve V8 is opened, the first bypass branch pipe 80 is opened, the intake main pipe 111 communicates with the first tower 20 through the third intake branch pipe 114 and the first bypass branch pipe 80, and the intake main pipe 111, the third intake branch pipe 114 and the first bypass branch pipe 80 form an adsorption passage. High temperature compressed air may enter the first column 20 from the second end 220 of the first column 20 through an adsorption passage. The third valve V3 is opened, the first outlet branch pipe 132 is opened, the outlet main pipe 131 communicates with the first tower 20 through the first outlet branch pipe 132, and the outlet main pipe 131 and the first outlet branch pipe 132 form an outlet passage. The drying air in the first tower 20 may be discharged from the first end 210 of the first tower 20 to the outside of the dryer 1 through the air outlet passage. The fourth valve V4 is closed and the second outlet branch 133 is closed, and the dry air in the first tower 20 cannot enter the second tower 30 through the second outlet branch 133. The first valve V1 is closed and the first cold blow branch pipe 122 is closed, and the dry air in the first tower 20 cannot enter the first tower 20 through the cold blow main pipe 121 and the first cold blow branch pipe 122. The second valve V2 is closed and the second cold blow branch pipe 123 is closed, and the dry air in the first tower 20 cannot enter the second tower 30 through the cold blow main pipe 121 and the second cold blow branch pipe 123. The fifth valve V5 is closed and the first intake branch pipe 112 is closed. High temperature compressed air cannot enter the first tower 20 from the first end 210 of the first tower 20 through the main intake pipe 111 and the first intake manifold 112. The sixth valve V6 is opened, the second intake branch 113 is opened, the intake main 111 communicates with the second tower 30 through the second intake branch 113, and the intake main 111 and the second intake branch 113 form a regeneration passage. The high temperature compressed air may enter the second column 30 from the first end 310 of the second column 30 through a regeneration passage.

In the first mode, the flow direction of air is as shown in fig. 3. In fig. 3, the flow direction of air is indicated by bold black lines. Specifically: the 120 ℃ compressed air is converted into 40 ℃ saturated air after passing through the second cooler 60 and the gas-liquid separator 70 in the adsorption passage, the 40 ℃ saturated air enters the first tower 20 from the second end 220 of the first tower 20, and moisture in the 40 ℃ saturated air can be absorbed by the adsorbent in the first tower 20 to become dry air. At this time, since the adsorbent in the first tower 20 adsorbs moisture in the saturated air at 40 deg.c, the adsorption capacity of the adsorbent in the first tower 20 is lowered, and simultaneously since the adsorbent in the first tower 20 generates heat during adsorption, the temperature of the dried air after adsorption is high, for example, more than 40 deg.c according to the heat exchange principle. The drying air in the first tower 20 may be discharged to the outside of the dryer 1 through an air outlet passage. The second column 30 is regenerated at the same time as the first column 20 is adsorption-dried. Wherein the 120 ℃ high temperature compressed air also enters the second column 30 from the first end 310 of the second column 30 through the regeneration channel. The compressed air at 120 c may regenerate the adsorbent in the second column 30, and take away moisture in the adsorbent in the second column 30 while heating the adsorbent in the second column 30. Thus, the high temperature compressed air of 120 ℃ may increase the adsorption capacity of the adsorbent in the second column 30. Meanwhile, the 120 ℃ high temperature compressed air can increase the temperature of the adsorbent in the second tower 30, so that the regenerated adsorbent in the second tower 30 is a high temperature adsorbent, and the 120 ℃ high temperature compressed air can be changed into low temperature compressed air. The low temperature compressed air may then exit the dryer 1 through a muffler.

In the second mode, as shown in fig. 4, the seventh valve V7 is opened, the third intake branch pipe 114 is opened, and the intake main pipe 111 communicates with the third intake branch pipe 114. The ninth valve V9 is closed and the second bypass branch 90 is closed. The high temperature compressed air cannot enter the second tower 30 from the second end 320 of the second tower 30 through the main inlet pipe 111, the third inlet branch pipe 114 and the second bypass branch pipe 90. The eighth valve V8 is opened, the first bypass branch pipe 80 is opened, the intake main pipe 111 communicates with the first tower 20 through the third intake branch pipe 114 and the first bypass branch pipe 80, and the intake main pipe 111, the third intake branch pipe 114 and the first bypass branch pipe 80 form an adsorption passage. High temperature compressed air may enter the first column 20 from the second end 220 of the first column 20 through an adsorption passage. The third valve V3 is opened, the first outlet branch pipe 132 is opened, the outlet main pipe 131 communicates with the first tower 20 through the first outlet branch pipe 132, and the outlet main pipe 131 and the first outlet branch pipe 132 form an outlet passage. The drying air in the first tower 20 may be discharged from the first end 210 of the first tower 20 to the outside of the dryer 1 through the air outlet passage. The fourth valve V4 is closed and the second outlet branch 133 is closed, and the dry air in the first tower 20 cannot enter the second tower 30 through the second outlet branch 133. The first valve V1 is closed and the first cold blow branch pipe 122 is closed, and the dry air in the first tower 20 cannot enter the first tower 20 through the cold blow main pipe 121 and the first cold blow branch pipe 122. The second valve V2 is opened, the second cold blowing branch pipe 123 is opened, the main gas outlet pipe 131 is communicated with the second tower 30 through the main cold blowing pipe 121 and the second cold blowing branch pipe 123, and the first gas outlet branch pipe 132, the main gas outlet pipe 131, the main cold blowing pipe 121, the first cooler 40 and the second cold blowing branch pipe 123 form a cold blowing passage. The dry air in the first tower 20 may enter the second tower 30 from the first end 210 of the first tower 20 and the first end 310 of the second tower 30 through a cold blow channel. The fifth valve V5 is closed and the first intake branch pipe 112 is closed. High temperature compressed air cannot enter the first tower 20 from the first end 210 of the first tower 20 through the main intake pipe 111 and the first intake manifold 112. The sixth valve V6 is closed and the second intake branch 113 is closed. The high temperature compressed air cannot enter the second tower 30 from the first end 310 of the second tower 30 through the main intake pipe 111 and the second intake branch pipe 113.

In the second mode, the flow direction of the air is as shown in fig. 4. In fig. 4, the flow direction of air is indicated by bold black lines. Specifically: the 120 ℃ compressed air is converted into 40 ℃ saturated air after passing through the second cooler 60 and the gas-liquid separator 70 in the adsorption passage, the 40 ℃ saturated air enters the first tower 20 from the second end 220 of the first tower 20, and moisture in the 40 ℃ saturated air can be absorbed by the adsorbent in the first tower 20 to become dry air. At this time, since the adsorbent in the first tower 20 adsorbs moisture in the saturated air at 40 deg.c, the adsorption capacity of the adsorbent in the first tower 20 is lowered, and simultaneously since the adsorbent in the first tower 20 generates heat during adsorption, the temperature of the dried air after adsorption is high, for example, more than 40 deg.c according to the heat exchange principle. The drying air in the first tower 20 may be discharged to the outside of the dryer 1 through the air outlet passage portion. The second column 30 performs cold blowing while the first column 20 performs adsorption drying. Wherein the dry air in the first tower 20 may enter the second tower 30 through the cooling channel portion. Specifically, the dry air may be cooled in the cold blow path through the first cooler 40 to low temperature dry air (e.g., 40 ℃ dry air) and then enter the second tower 30 from the first end 310 of the second tower 30. In the second tower 30, the low-temperature dry air may cool-blow the regenerated high-temperature adsorbent, reducing the temperature of the high-temperature adsorbent. The low temperature drying air may be discharged out of the dryer 1 through a muffler after cold blowing the high temperature adsorbent in the second tower 30.

It will be appreciated that the adsorbent in the first column 20 may not generate heat during adsorption, as the application is not limited in this regard.

It will be appreciated that the dryer 1 may further include other valves, such as a tenth valve V10 and an eleventh valve V11, the tenth valve V10 being disposed between the second end 320 of the second tower 30 and the muffler for controlling the open/close state of the connection between the second end 320 of the second tower 30 and the muffler, the eleventh valve V11 being disposed between the second end 220 of the first tower 20 and the muffler for controlling the open/close state of the connection between the second end 220 of the first tower 20 and the muffler, and the dryer 1 may further include other pipes, which is not limited by the present application.

It is understood that the third mode and the fourth mode are similar to the first mode and the second mode, respectively, and will not be described herein.

Therefore, the dryer 1 can accelerate the temperature reduction of the adsorbent in the dryer 1 by reducing the temperature of the air used in cold blowing, and reduce the duration of cold blowing, thereby reducing the air amount consumed in cold blowing and avoiding energy loss.

In some embodiments, with continued reference to fig. 1-2, the dryer 1 further includes a dew point sensor 100 and a control system. The dew point sensor 100 is provided at an outlet of the air outlet duct 130, and the dew point sensor 100 is used to detect a dew point of the dry air discharged through the air outlet duct 130. The dew point sensor 100 is connected to a control system for acquiring the dew point of the dry air discharged through the air outlet duct 130 from the dew point sensor 100.

Specifically, a dew point sensor 100 is provided at the outlet of the outlet main pipe 131, the dew point sensor 100 being for detecting the dew point of the dry air discharged through the outlet main pipe 131. The dew point detected by the dew point sensor 100 can be used to determine the adsorption capacity of the adsorbent in the first adsorption column 20 or the second adsorption column 30. The control system is used to acquire the dew point of the dry air discharged through the outlet main pipe 131 from the dew point sensor 100. Referring to fig. 5, the control system may also be configured to determine whether the dew point is lower than a preset dew point. The preset dew point can be determined according to factory air standards, and the application is not limited to this. The predetermined dew point may be, for example, -15 ℃ or the like. In some embodiments, if the dew point is not lower than the preset dew point, it indicates that the adsorbent in the first adsorption tower 20 or the second adsorption tower 30 is saturated with water, the adsorption capacity is reduced, and the adsorption should be stopped at this time, and the control system may control to stop the adsorption. Wherein the control system can control the stopping of adsorption by controlling the valve 50. In some embodiments, the control system may control the switching from adsorption to regeneration cold blowing by controlling valve 50. In some embodiments, if the dew point is below the preset dew point, it indicates that the adsorbent in the first adsorption tower 20 or the second adsorption tower 30 is not saturated with water, the adsorption capacity is not reduced, and the adsorbent is still available for adsorption, and the control system continues adsorption. It can be appreciated that the control system may further obtain the dew point and determine whether the dew point is higher than a preset dew point, which is not limited in this application. Therefore, by taking the dew point as the condition for ending the adsorption, when the dew point is lower than the preset dew point, even if the duration (for example, 4 hours) of the adsorption drying of the tower is reached, the control system can control the tower to continue the adsorption drying, so that the adsorption can be prevented from being stopped when the adsorbent still has the adsorption capacity, the regeneration period can be prolonged, and the cold blowing times can be reduced.

In some embodiments, the adsorbent of the dryer 1 may be one or more of granular silica gel, alumina micropowder, carbon molecules, and the like. The first tower 20 and the second tower 30 may each include a tub. The drum of the first column 20 and the drum of the second column 30 may be used to receive the adsorbent of the first column 20 and the adsorbent of the second column 30, respectively. The dryer 1 further comprises a temperature sensor 101. The temperature sensor 101 is disposed within the first tower 20 and the second tower 30. In some embodiments, the temperature sensor 101 may be disposed on the drum of the first and second towers 20 and 30 and in contact with the adsorbent in the drum. The temperature sensor 101 is used to determine the temperature of the adsorbent in the tanks of the first and second columns 20 and 30. The temperature of the adsorbent determined by the temperature sensor 101 can be used to determine the adsorption capacity of the adsorbent. The temperature sensor 101 is connected to a control system. The control system is used to obtain the temperature of the adsorbent in the tanks of the first and second columns 20 and 30 from the temperature sensor 101. The control system may be configured to determine whether the temperature of the adsorbent is less than a predetermined temperature. In some embodiments, if the temperature of the adsorbent is not less than the preset temperature, it indicates that the adsorbent in the first tower 20 or the second tower 30 is not being blown, the adsorption capacity is not recovered, and at this time, the cold blowing may be continued, and the control system may continue the cold blowing. It is understood that the control system may further obtain the temperature of the adsorbent, and determine whether the temperature of the adsorbent is less than a preset temperature, which is not limited in the present application. The preset temperature may be, for example, 40 ℃ or the like. In some embodiments, if the temperature of the adsorbent is less than the preset temperature, which indicates that the adsorbent in the first tower 20 or the second tower 30 is being blown, the adsorption capacity is recovered, and the cold blowing should be stopped, the control system may control to stop the cold blowing. In some embodiments, the control system may control the stop of cold blowing by controlling valve 50. Therefore, by taking the temperature of the adsorbent as the condition for ending the cold blowing, when the temperature of the adsorbent is smaller than the preset temperature, even if the duration (for example, 2 hours) of the cold blowing of the tower is not reached, the control system can control the tower to stop the cold blowing, so that the cold blowing can be prevented from continuing after the temperature of the adsorbent reaches the standard, the duration of the cold blowing is reduced, the air quantity consumed during the cold blowing is reduced, and the energy consumption is avoided.

Fig. 5 shows an example diagram of a column switching between adsorption and regeneration cold blowing, it being understood that the control system may also control a column switching from adsorption to regeneration cold blowing and another column switching from regeneration cold blowing to adsorption, as the application is not limited in this regard.

It is understood that the control system may control the switching of one tower from adsorption to regeneration cold blowing by controlling the valve 50 when the dew point of the one tower is not lower than the preset dew point and the cold blowing of the other tower is stopped, which is not limited by the present application.

The first column 20 and the second column 30 may each be subjected to adsorption and regeneration cold blowing, such as shown in table 2 below:

TABLE 2

Thus, the dryer 1 is in the variable cycle control mode, and the period of time during which regeneration is not performed, the period of time during which cold blowing is performed, and the period of time during which adsorption drying is performed are respectively fixed periods of time. The dryer 1 can realize the control of the adsorption time through the dew point, and form closed loop control. The dryer 1 also reduces the cold blow time by the temperature of the adsorbent, forming a closed loop control.

Finally, it should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present application without departing from the spirit and scope of the technical solution of the present application.

Claims (10)

1. A desiccator, characterized by includes pipeline, first tower, second tower, first cooler and a plurality of valve, wherein:

The pipeline comprises an air inlet pipeline, a cold blowing pipeline and an air outlet pipeline, wherein the air inlet pipeline is used for enabling high-temperature compressed air to enter the first tower or the second tower, the cold blowing pipeline is connected with the air outlet pipeline, the first cooler is arranged in the cold blowing pipeline and used for cooling and drying air flowing through the cold blowing pipeline, and the air outlet pipeline is used for discharging dry air dried by the first tower or the second tower out of the first tower or the second tower;

The first end of the first tower and the first end of the second tower are respectively connected with the air inlet pipeline through corresponding valves, the first end of the first tower and the first end of the second tower are respectively connected with the air outlet pipeline through corresponding valves, and the first end of the first tower and the first end of the second tower are respectively connected with the cold blowing pipeline through a first valve and a second valve in a plurality of valves; the second end of the first tower and the second end of the second tower are respectively connected with the air inlet pipeline through corresponding valves;

The cold blowing pipeline comprises a cold blowing main pipe, a first cold blowing branch pipe and a second cold blowing branch pipe, and the cold blowing main pipe is arranged on the air outlet pipeline and is positioned between two opposite ends of the air outlet pipeline; the first valve and the second valve are respectively arranged in the first cold blowing branch pipe and the second cold blowing branch pipe;

The first end of the first tower and the first end of the second tower are connected with the cold blowing main pipe through the first cold blowing branch pipe and the second cold blowing branch pipe respectively;

The first cooler is installed in the cold blow main pipe.

2. The dryer of claim 1, wherein:

The valves further comprise a third valve and a fourth valve, and the first end of the first tower and the first end of the second tower are connected with the air outlet pipeline through the third valve and the fourth valve respectively;

The air outlet pipeline comprises an air outlet main pipe, a first air outlet branch pipe and a second air outlet branch pipe, the air outlet main pipe is used for discharging the dry air out of the dryer, and the third valve and the fourth valve are respectively arranged in the first air outlet branch pipe and the second air outlet branch pipe; the cold blowing main pipe is arranged on the air outlet main pipe and is positioned between two opposite ends of the air outlet main pipe;

The first end of the first tower and the first end of the second tower are connected with the air outlet main pipe through the first air outlet branch pipe and the second air outlet branch pipe respectively.

3. A dryer as claimed in claim 2, characterized in that:

The valves further comprise a fifth valve, a sixth valve and a seventh valve, wherein the first end of the first tower and the first end of the second tower are connected with the air inlet pipeline through the fifth valve and the sixth valve respectively, and the second end of the first tower and the second end of the second tower are connected with the air inlet pipeline through the seventh valve;

The air inlet pipeline comprises an air inlet main pipe, a first air inlet branch pipe, a second air inlet branch pipe and a third air inlet branch pipe, wherein the air inlet main pipe is used for allowing the high-temperature compressed air to enter the first air inlet branch pipe, the second air inlet branch pipe and the third air inlet branch pipe; the fifth valve, the sixth valve and the seventh valve are respectively arranged in the first air inlet branch pipe, the second air inlet branch pipe and the third air inlet branch pipe;

the first end of the first tower and the first end of the second tower are connected with the air inlet main pipe through the first air inlet branch pipe and the second air inlet branch pipe respectively, and the second end of the first tower and the second end of the second tower are connected with the air inlet main pipe through the third air inlet branch pipe.

4. A dryer as claimed in claim 3, characterized in that:

The valves further comprise an eighth valve and a ninth valve, and the second end of the first tower and the second end of the second tower are further connected with the air inlet pipeline through the eighth valve and the ninth valve respectively;

the dryer also comprises a second cooler, a gas-liquid separator, a first bypass branch pipe and a second bypass branch pipe, wherein the second cooler is connected between the third air inlet branch pipe and the gas-liquid separator, and the eighth valve and the ninth valve are respectively arranged in the first bypass branch pipe and the second bypass branch pipe;

the second end of the first tower and the second end of the second tower are connected with the gas-liquid separator through the first bypass branch pipe and the second bypass branch pipe respectively.

5. A dryer as claimed in any one of claims 1 to 4, characterized in that:

the valve is a one-way valve.

6. The dryer of claim 1, wherein:

The dryer comprises an adsorption channel, an air outlet channel and a cold blowing channel, wherein the adsorption channel is used for enabling high-temperature compressed air to enter the first tower, the air outlet channel is used for discharging dry air discharged from the first tower out of the dryer, and the cold blowing channel is used for cooling and drying the dry air discharged from the first tower and enabling the cooled and dried dry air to enter the second tower.

7. The dryer of claim 6, wherein:

The first tower is used for carrying out adsorption drying, and the second tower is used for carrying out cold blowing.

8. The dryer of claim 1, wherein:

The dryer comprises an adsorption channel, a regeneration channel and an air outlet channel, wherein the adsorption channel is used for allowing the high-temperature compressed air to enter the first tower, the regeneration channel is used for allowing the high-temperature compressed air to enter the second tower, and the air outlet channel is used for discharging the dry air discharged from the first tower out of the dryer.

9. The dryer of claim 1, wherein:

The dryer further comprises a dew point sensor and a control system, wherein the dew point sensor is arranged at the outlet of the air outlet pipeline and used for detecting the dew point of the dry air exhausted by the air outlet pipeline, the dew point sensor is connected with the control system, and the control system is used for acquiring the dew point of the dry air exhausted by the air outlet pipeline from the dew point sensor.

10. The dryer of claim 1, wherein:

the first tower and the second tower all include the bucket, the bucket is used for acceping the adsorbent, the desiccator still includes temperature sensor and control system, temperature sensor sets up first tower with on the bucket of second tower, and with in the bucket the adsorbent contact, temperature sensor is used for confirming first tower with the temperature of the adsorbent in the bucket of second tower, temperature sensor with control system connects, control system is used for follow temperature sensor obtains first tower with the temperature of the adsorbent in the bucket of second tower.