Zero air consumption suction dryer and method of use

Abstract

The application discloses a zero-gas-consumption suction dryer and a use method thereof, and belongs to the technical field of gas drying devices. The technical scheme points of the application are as follows: an adsorption tower group is used for adsorbing water in compressed air, and the adsorption tower group comprises a first adsorption tower, a second adsorption tower and a third adsorption tower; a regeneration circulation module is connected with the adsorption tower group, and the regeneration circulation module comprises a blower, an evaporator and a condenser; an air inlet pipe is used for inputting compressed air; an air outlet pipe is used for outputting compressed air; and a liquid collecting device is used for collecting liquid water generated by the condenser; wherein, when continuously working, the first adsorption tower, the second adsorption tower and the third adsorption tower are respectively in an adsorption state, a heating regeneration state and a cold-blowing regeneration state. The application realizes stable drying of the suction dryer on compressed air, and does not affect the output power of the compressed air.

Description

Technical Field

[0001] This application belongs to the technical field of gas drying devices, and particularly relates to a zero-gas-consumption desiccant dryer and its usage method. Background Technology

[0002] Compressed air needs to be dried before use to remove moisture. A desiccant dryer is a common device for drying compressed air. It typically consists of two adsorption towers, each containing a granular adsorbent. When compressed air passes through the towers, the adsorbent adsorbs moisture, resulting in dry compressed air.

[0003] A Chinese patent with publication number CN113996156A discloses a zero-air-consumption heating regeneration adsorption dryer, including a first adsorption tower and a second adsorption tower. A first regeneration pneumatic valve and a first outlet pneumatic valve are fixedly connected to the top of the first adsorption tower. A second regeneration pneumatic valve is fixedly connected to the end of the first regeneration pneumatic valve away from the first adsorption tower. The end of the second regeneration pneumatic valve away from the first regeneration pneumatic valve is fixedly connected to the top of the second adsorption tower. A second outlet pneumatic valve is fixedly connected to the end of the first outlet pneumatic valve away from the first adsorption tower. The end of the second outlet pneumatic valve away from the first outlet pneumatic valve is fixedly connected to the top of the second adsorption tower.

[0004] Although the aforementioned desiccant can dry compressed air, the adsorption tower has two working states: adsorption and regeneration. The regeneration state includes heating regeneration and cold blowing regeneration. When the adsorption tower is in the regeneration state, people need to pass the compressed air through the adsorption tower, which increases the resistance of the compressed air and thus increases the power of the compressor that delivers the compressed air, resulting in high energy consumption. Summary of the Invention

[0005] The purpose of this application is to address the aforementioned technical problems by providing a zero-air-consumption desiccant dryer and its usage method, which enables the desiccant dryer to stably dry compressed air without affecting the output power of the compressed air.

[0006] This application provides a zero-air-consumption desiccant dryer, comprising:

[0007] An adsorption tower group is used to adsorb moisture in compressed air, and the adsorption tower group includes a first adsorption tower, a second adsorption tower, and a third adsorption tower.

[0008] A regeneration and circulation module is connected to the adsorption tower group, and the regeneration and circulation module includes a blower, an evaporator, and a condenser.

[0009] The intake pipe is used for the input of compressed air;

[0010] The air outlet pipe is used for outputting compressed air;

[0011] A liquid collection device for collecting liquid water produced by the condenser;

[0012] During continuous operation, the first adsorption tower, the second adsorption tower, and the third adsorption tower are respectively in the adsorption state, the heating regeneration state, and the cold blowing regeneration state.

[0013] The desiccant dries compressed air through the first, second, and third adsorption towers in the adsorption tower group. The compressed air enters the adsorption tower group through the inlet pipe, and the dried compressed air is discharged through the outlet pipe. The adsorbent is regenerated by the regeneration circulation module, which operates in the heating regeneration state and the cold blowing regeneration state. By having the first, second, and third adsorption towers in the adsorption state, heating regeneration state, and cold blowing regeneration state respectively, the adsorption tower group can achieve uninterrupted drying of compressed air. The regeneration circulation module is isolated from the adsorption towers that are drying compressed air during operation to ensure zero loss of compressed air. In the regeneration circulation module, water vapor is condensed by a condenser, and the liquid water produced by condensation is collected by a liquid collection device. The air in the regeneration circulation module is circulated by a blower, and the circulating gas is heated by an evaporator, which facilitates the introduction of high-temperature gas into the adsorption tower for heating regeneration.

[0014] Furthermore, the adsorption tower assembly includes:

[0015] The first solenoid valve corresponds to the inlet end of the first adsorption tower, the second adsorption tower, and the third adsorption tower, respectively, and is connected to the air inlet pipe.

[0016] The second solenoid valve corresponds to the outlet end of the first adsorption tower, the second adsorption tower, and the third adsorption tower, respectively, and is connected to the gas outlet pipe.

[0017] The first solenoid valve and the second solenoid valve are each controlled independently.

[0018] The first solenoid valve controls the compressed air to enter the corresponding adsorption tower, connecting the adsorption tower to the inlet pipe. The second solenoid valve controls the flow of dried compressed air to the outlet pipe, so that the adsorption towers in the adsorption tower group in the adsorption state and the regeneration state are independent of each other and do not interfere with each other, achieving zero air consumption.

[0019] Furthermore, the regeneration cycle module also includes:

[0020] The third solenoid valve corresponds to the outlet end of the first adsorption tower, the second adsorption tower, and the third adsorption tower, respectively, and is connected to the condenser.

[0021] The fourth solenoid valve corresponds to the inlet end of the first adsorption tower, the second adsorption tower, and the third adsorption tower, and is connected to the evaporator.

[0022] The blower is located between the evaporator and the condenser, and the third and fourth solenoid valves are controlled independently.

[0023] The third and fourth solenoid valves are used to control the connection between the corresponding adsorption tower and the regeneration circulation module, so that it enters the regeneration state, and multiple adsorption towers can enter the regeneration state.

[0024] Furthermore, the regeneration cycle module also includes:

[0025] The distributor is placed between the blower and the evaporator;

[0026] The fifth solenoid valve corresponds to the inlet end of the first adsorption tower, the second adsorption tower, and the third adsorption tower, and is connected to the flow divider.

[0027] Each of the fifth solenoid valves is individually controlled.

[0028] The airflow blown by the blower is divided and regulated by the flow divider, allowing the airflow to flow separately to the evaporator and the corresponding adsorption tower. This allows for simultaneous heating and cold blowing regeneration of both adsorption towers, or the airflow can be controlled to flow only to the evaporator or the corresponding adsorption tower. When the airflow flows only to the evaporator, it can only achieve heating regeneration of the corresponding adsorption tower. When the airflow flows only to the corresponding adsorption tower, it can only achieve cold blowing regeneration of the corresponding adsorption tower. The flow of airflow from the regeneration circulation module to the adsorption tower is controlled by the fifth solenoid valve.

[0029] Furthermore, the splitter includes:

[0030] Mounting housing;

[0031] An adjusting component is movably installed in the mounting housing, and the adjusting component is provided with a through hole;

[0032] A drive unit, mounted on the mounting housing, is used to drive the movement of the adjusting components;

[0033] The feedback component, located between the mounting housing and the adjusting component, is used to determine the airflow splitting status;

[0034] The mounting housing is provided with a connection inlet, the blower is connected to the connection inlet through a pipe, the mounting housing is provided with a first connection outlet, the evaporator is connected to the first connection outlet through a pipe, the mounting housing is provided with a second connection outlet, and the fifth solenoid valve is connected to the second connection outlet through a pipe.

[0035] The adjusting component is installed inside the mounting housing and is driven to rotate by a drive device. The airflow in the regeneration circulation module is controlled by the correspondence between the through holes on the adjusting component and the first and second connecting outlets. The position of the adjusting component is determined by a feedback component to facilitate its adjustment.

[0036] Furthermore, the feedback component includes:

[0037] Positioning element, installed on adjusting element;

[0038] The first positioning seat is installed on the mounting housing;

[0039] The second positioning seat is installed on the mounting housing;

[0040] The first sensor, corresponding to the first positioning seat and the second positioning seat respectively, is used to detect the status of the first positioning seat and the second positioning seat;

[0041] The first spring is installed on the first positioning seat and the second positioning seat respectively;

[0042] The movable component is movably connected to both sides of the first positioning seat;

[0043] The second spring has one end abutting against the moving part;

[0044] The second sensor is placed on the first positioning seat, and the second sensor abuts against the other end of the second spring;

[0045] The first positioning seat is connected to both the first connecting outlet and the second connecting outlet and the connecting hole. There are two second positioning seats, which are respectively connected to the first connecting outlet or the second connecting outlet and the connecting hole.

[0046] The positioning component is installed on the adjusting component and rotates simultaneously with it. When the positioning component engages with the first positioning seat, the first positioning seat moves and abuts against the corresponding first sensor, providing signal feedback. At this time, airflow flows to both the first and second connecting outlets. When the positioning component engages with the second positioning seat, the second positioning seat moves and abuts against the corresponding first sensor, providing signal feedback. At this time, airflow flows only to either the first or second connecting outlet. When the positioning component separates from the first and second positioning seats, the first spring resets the first and second positioning seats. When the positioning component engages with the first positioning seat, the driving device rotates the adjusting component for fine-tuning, controlling the proportion of airflow to the first and second connecting outlets. The movement of the positioning component abuts against the movable component, changing the deflection angle of the movable components on both sides of the first positioning seat. The pressure of the second springs corresponding to the two movable components on the second sensors is different, used to calculate and analyze the specific position of the adjusting component, facilitating the proportional distribution of gas flow to the first and second connecting outlets.

[0047] Furthermore, the liquid collection device includes:

[0048] A collection box is connected to the condenser via a pipe, and the collection box is provided with an air outlet;

[0049] The connector is placed at the air outlet of the blower;

[0050] The retractable section is located on the inner wall surface of the connector;

[0051] The connector is connected to the air outlet via a pipe, and the connection position corresponds to the contraction section.

[0052] The condensate produced by the condenser flows into the collection box under the action of gravity. The outlet of the collection box is connected to a connector. The connector has a venturi structure formed by a contraction part to extract gas from the collection box, balance the gas pressure in the collection box, and at the same time accelerate the flow of the condensate produced by the condenser into the collection box.

[0053] This application also provides a method for using a zero-air-consumption desiccant, the specific steps of which include:

[0054] S1, When the desiccant is started, the first solenoid valve and the second solenoid valve corresponding to the first adsorption tower are opened to dry the compressed air;

[0055] S2, when the water vapor adsorbed by the first adsorption tower reaches saturation, switch to the second adsorption tower for adsorption, open the first and second solenoid valves corresponding to the second adsorption tower, close the first and second solenoid valves corresponding to the first adsorption tower, and then open the third and fourth solenoid valves corresponding to the first adsorption tower. Control the positioning component to cooperate with the second positioning seat corresponding to the first connection outlet, so that the first adsorption tower is connected to the regeneration circulation module, and the first adsorption tower enters the heating and regeneration state.

[0056] S3, when the water vapor adsorbed by the second adsorption tower reaches saturation, switch to the third adsorption tower for adsorption, open the first and second solenoid valves corresponding to the third adsorption tower, close the first and second solenoid valves corresponding to the second adsorption tower, then close the fourth solenoid valve of the first adsorption tower, open the fifth solenoid valve of the first adsorption tower, and simultaneously open the third and fourth solenoid valves corresponding to the second adsorption tower. Control the positioning component to cooperate with the first positioning seat so that both the first and second adsorption towers are connected to the regeneration circulation module, so that the first adsorption tower enters the cold blowing regeneration state and the second adsorption tower enters the heating regeneration state.

[0057] S4, when the desiccant is working continuously, the adsorption state, heating regeneration state and cold blowing regeneration state on the first adsorption tower, the second adsorption tower and the third adsorption tower are switched in a cycle.

[0058] When the desiccant is turned off, S5 first puts the last adsorption tower in the adsorption state into the heating regeneration state, puts the previous adsorption tower into the cold blowing regeneration state, and then puts the last adsorption tower in the adsorption state into the cold blowing regeneration state. At this time, the control positioning component cooperates with the second positioning seat corresponding to the second connection outlet to complete the drying of the adsorption tower group.

[0059] The adsorption towers in the first, second, and third adsorption towers, which are in the adsorption state and those in the regeneration state, are independent of each other, and the air inside them circulates independently, which can ensure the continuous and stable drying of the compressed gas.

[0060] The beneficial effects of this application are:

[0061] 1. Compressed air enters the adsorption tower group through the inlet pipe, and the dried compressed air is discharged through the outlet pipe. The adsorbent is regenerated by the regeneration circulation module in the heating regeneration state and the cold blowing regeneration state, so that the adsorption tower group can achieve uninterrupted drying of compressed air. When the regeneration circulation module is working, it is isolated from the adsorption tower that is drying compressed air to ensure zero loss of compressed air.

[0062] 2. The adjusting component is installed inside the mounting housing. The driving device is used to drive the adjusting component to rotate. The airflow in the regeneration circulation module is controlled by the correspondence between the through hole on the adjusting component and the first connection outlet and the second connection outlet. The position status of the adjusting component is determined by the feedback component to facilitate the adjustment of the adjusting component.

[0063] 3. The condensate produced by the condenser flows into the collection box under the action of gravity. The outlet of the collection box is connected to a connector. The connector forms a Venturi structure through a contraction part to extract gas from the collection box, balance the gas pressure in the collection box, and at the same time accelerate the flow of the condensate produced by the condenser into the collection box. Attached Figure Description

[0064] Figure 1 This is a schematic diagram of the structure of the desiccant of this application;

[0065] Figure 2 This is a schematic diagram of the shunt structure of the present application;

[0066] Figure 3 This is a schematic diagram of the mounting shell of this application;

[0067] Figure 4 This is a schematic diagram of the feedback component of this application;

[0068] Figure 5 For the purposes of this application Figure 1 An enlarged structural diagram at point A;

[0069] In the attached diagram, the reference numerals are as follows: 100, Adsorption tower group; 110, First adsorption tower; 120, Second adsorption tower; 130, Third adsorption tower; 140, First solenoid valve; 150, Second solenoid valve; 200, Regeneration circulation module; 210, Blower; 220, Evaporator; 230, Condenser; 240, Third solenoid valve; 250, Fourth solenoid valve; 260, Flow divider; 261, Mounting housing; 262, Adjusting component; 263, Connecting hole; 264, Drive device; 265, Connection. Import; 266, First connecting outlet; 267, Second connecting outlet; 270, Fifth solenoid valve; 300, Air inlet pipe; 400, Air outlet pipe; 500, Liquid collection device; 510, Collection box; 520, Connector; 530, Retractable part; 600, Feedback assembly; 610, Positioning component; 620, First positioning seat; 630, Second positioning seat; 640, First sensor; 650, First spring; 660, Moving part; 670, Second spring; 680, Second sensor. Detailed Implementation

[0070] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0071] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0072] The embodiments of this application are described in detail below with reference to the accompanying drawings, through specific examples and application scenarios.

[0073] Example 1:

[0074] like Figure 1 As shown in the figure, this application provides a zero-air-consumption desiccant dryer, including:

[0075] The adsorption tower group 100 is used to adsorb moisture in compressed air, and the adsorption tower group 100 includes a first adsorption tower 110, a second adsorption tower 120, and a third adsorption tower 130.

[0076] The regeneration circulation module 200 is connected to the adsorption tower group 100. The regeneration circulation module 200 includes a blower 210, an evaporator 220, and a condenser 230.

[0077] The intake pipe 300 is used for the input of compressed air;

[0078] The 400mm outlet pipe is used for compressed air output.

[0079] Liquid collection device 500 is used to collect liquid water produced by condenser 230;

[0080] During continuous operation, the first adsorption tower 110, the second adsorption tower 120, and the third adsorption tower 130 are respectively in adsorption state, heating regeneration state, and cold blowing regeneration state.

[0081] The desiccant dries compressed air through the first adsorption tower 110, the second adsorption tower 120, and the third adsorption tower 130 in the adsorption tower group 100. The compressed air enters the adsorption tower group 100 through the inlet pipe 300, and the dried compressed air is discharged through the outlet pipe 400. The adsorbent is regenerated by the regeneration circulation module 200 in the adsorption towers in the heating regeneration state and the cold blowing regeneration state. The first adsorption tower 110, the second adsorption tower 120, and the third adsorption tower 130 are respectively in the adsorption state, the heating regeneration state, and the cold blowing regeneration state. In the regeneration cycle module 200, the adsorption tower group 100 is able to continuously dry the compressed air. When the regeneration cycle module 200 is working, it is isolated from the adsorption tower that dries the compressed air to ensure zero loss of compressed air. In the regeneration cycle module 200, water vapor is condensed by condenser 230, and then the liquid water produced by condensation is collected by liquid collection device 500. Air is circulated in the regeneration cycle module 200 by blower 210, and the circulating gas is heated by evaporator 220, so that high-temperature gas can be introduced into the adsorption tower for heating and regeneration.

[0082] Example 2:

[0083] like Figure 1 As shown, this application embodiment provides a zero-gas-consumption desiccant dryer, which, in addition to including the above-mentioned technical features, further includes the following: the adsorption tower assembly 100 includes:

[0084] The first solenoid valve 140 corresponds to the inlet end of the first adsorption tower 110, the second adsorption tower 120, and the third adsorption tower 130, respectively, and is connected to the air inlet pipe 300.

[0085] The second solenoid valve 150 corresponds to the outlet end of the first adsorption tower 110, the second adsorption tower 120, and the third adsorption tower 130, respectively, and is connected to the gas outlet pipe 400.

[0086] The first solenoid valve 140 and the second solenoid valve 150 are both controlled independently.

[0087] The first solenoid valve 140 controls the compressed air to enter the corresponding adsorption tower, so that the adsorption tower is connected to the air inlet pipe 300. The second solenoid valve 150 controls the flow of dried compressed air to the air outlet pipe 400, so that the adsorption towers in the adsorption tower group 100 in the adsorption state and the regeneration state are independent of each other and do not interfere with each other, achieving zero air consumption.

[0088] Example 3:

[0089] like Figure 1 As shown, this application embodiment provides a zero-air-consumption desiccant dryer, which, in addition to the above-mentioned technical features, further includes the following: The regeneration circulation module 200 also includes:

[0090] The third solenoid valve 240 corresponds to the outlet end of the first adsorption tower 110, the second adsorption tower 120, and the third adsorption tower 130, respectively, and is connected to the condenser 230.

[0091] The fourth solenoid valve 250 corresponds to the inlet end of the first adsorption tower 110, the second adsorption tower 120, and the third adsorption tower 130, and is connected to the evaporator 220.

[0092] The blower 210 is located between the evaporator 220 and the condenser 230, and the third solenoid valve 240 and the fourth solenoid valve 250 are controlled independently.

[0093] The third solenoid valve 240 and the fourth solenoid valve 250 are used to control the connection between the corresponding adsorption tower and the regeneration circulation module 200, so that it enters the regeneration state, and multiple adsorption towers can enter the regeneration state.

[0094] Example 4:

[0095] like Figure 1 As shown, this application embodiment provides a zero-air-consumption desiccant dryer, which, in addition to the above-mentioned technical features, further includes the following: The regeneration circulation module 200 also includes:

[0096] The distributor 260 is placed between the blower 210 and the evaporator 220;

[0097] The fifth solenoid valve 270 corresponds to the inlet end of the first adsorption tower 110, the second adsorption tower 120, and the third adsorption tower 130, and is connected to the flow divider 260.

[0098] Each of the fifth solenoid valves 270 is individually controlled.

[0099] The airflow blown by the blower 210 is controlled by the flow divider 260 to divert and regulate the airflow, allowing it to flow to the evaporator 220 and the corresponding adsorption tower respectively. This allows for simultaneous heating and cold blowing regeneration of both adsorption towers. Alternatively, the airflow can be controlled to flow to either the evaporator 220 or the corresponding adsorption tower individually. When the airflow flows to the evaporator 220 individually, only the corresponding adsorption tower can be heated and regenerated. When the airflow flows to the corresponding adsorption tower individually, only the corresponding adsorption tower can be cold blown and regenerated. The flow of air from the regeneration circulation module 200 to the adsorption tower is controlled by the fifth solenoid valve 270.

[0100] Example 5:

[0101] like Figure 2 As shown, this application embodiment provides a zero-air-consumption desiccant dryer, which, in addition to including the above-mentioned technical features, further includes the following: the distributor 260 includes:

[0102] Mounting housing 261;

[0103] An adjusting member 262 is movably installed in the mounting housing 261, and the adjusting member 262 is provided with a through hole 263;

[0104] A drive unit 264 is mounted on a mounting housing 261 and is used to drive the adjustment component 262 to move.

[0105] Feedback component 600, placed between mounting housing 261 and adjusting component 262, is used to determine the airflow splitting state;

[0106] The mounting housing 261 is provided with a connection inlet 265, the blower 210 is connected to the connection inlet 265 through a pipe, the mounting housing 261 is provided with a first connection outlet 266, the evaporator 220 is connected to the first connection outlet 266 through a pipe, the mounting housing 261 is provided with a second connection outlet 267, and the fifth solenoid valve 270 is connected to the second connection outlet 267 through a pipe.

[0107] The adjusting component 262 is installed inside the mounting housing 261. The driving device 264 drives the adjusting component 262 to rotate. The airflow in the regeneration circulation module 200 is controlled by the correspondence between the through hole 263 on the adjusting component 262 and the first connecting outlet 266 and the second connecting outlet 267. The position of the adjusting component 262 is determined by the feedback component 600 to facilitate the adjustment of the adjusting component 262.

[0108] Example 6:

[0109] like Figure 2-4 As shown, this application embodiment provides a zero-air-consumption desiccant dryer, which, in addition to including the above-mentioned technical features, further includes the following feedback component 600:

[0110] Positioning component 610 is installed on adjusting component 262;

[0111] The first positioning seat 620 is installed on the mounting housing 261;

[0112] The second positioning seat 630 is installed on the mounting housing 261;

[0113] The first sensor 640 corresponds to the first positioning seat 620 and the second positioning seat 630 respectively, and is used to detect the status of the first positioning seat 620 and the second positioning seat 630.

[0114] The first spring 650 is respectively installed on the first positioning seat 620 and the second positioning seat 630;

[0115] Movable component 660 is movably connected to both sides of the first positioning seat 620;

[0116] The second spring 670 has one end abutting against the movable part 660;

[0117] The second sensor 680 is placed on the first positioning seat 620, and the second sensor 680 abuts against the other end of the second spring 670;

[0118] The first positioning seat 620 is connected to the first connecting outlet 266, the second connecting outlet 267 and the connecting through hole 263. There are two second positioning seats 630, which are respectively connected to the first connecting outlet 266 or the second connecting outlet 267 and the connecting through hole 263.

[0119] The positioning element 610 is mounted on the adjusting element 262 and rotates simultaneously with the adjusting element 262. When the positioning element 610 engages with the first positioning seat 620, the first positioning seat 620 moves and abuts against the corresponding first sensor 640, providing signal feedback. At this time, airflow flows simultaneously to the first connecting outlet 266 and the second connecting outlet 267. When the positioning element 610 engages with the second positioning seat 630, the second positioning seat 630 moves and abuts against the corresponding first sensor 640, providing signal feedback. At this time, airflow flows only to the first connecting outlet 266 or the second connecting outlet 267. When the positioning element 610 separates from the first positioning seat 620 and the second positioning seat 630, the first spring 65... 0 resets the first positioning seat 620 and the second positioning seat 630. When the positioning member 610 engages with the first positioning seat 620, the adjusting member 262 is rotated by the driving device 264 for fine adjustment, controlling the air ratio flowing to the first connecting outlet 266 and the second connecting outlet 267. The positioning member 610 moves and abuts against the movable member 660, causing the deflection angle of the movable members 660 on both sides of the first positioning seat 620 to change. The pressure of the second spring 670 corresponding to the two movable members 660 on the second sensor 680 is different, which is used to calculate and analyze the specific position of the adjusting member 262, so as to facilitate the proportional distribution of gas flow to the first connecting outlet 266 and the second connecting outlet 267.

[0120] Example 7:

[0121] like Figure 1 , Figure 5 As shown, this application embodiment provides a zero-air-consumption desiccant dryer, which, in addition to including the above-mentioned technical features, further includes the following:

[0122] The collection box 510 is connected to the condenser 230 via a pipe, and the collection box 510 is provided with an air outlet.

[0123] Connector 520 is placed at the air outlet of blower 210;

[0124] The retractable part 530 is located on the inner wall surface of the connector 520;

[0125] The connector 520 is connected to the air outlet via a pipe, and the connection position corresponds to the contraction part 530.

[0126] The condensate produced by the condenser 230 flows into the collection box 510 under the action of gravity. The outlet of the collection box 510 is connected to the connector 520. The connector 520 forms a venturi structure through the contraction part 530 to extract gas from the collection box 510, balance the gas pressure in the collection box 510, and at the same time accelerate the flow of the condensate produced by the condenser 230 into the collection box 510.

[0127] Example 8:

[0128] This application also provides a method for using a zero-air-consumption desiccant, the specific steps of which include:

[0129] S1, When the desiccant is started, the first solenoid valve 140 and the second solenoid valve 150 corresponding to the first adsorption tower 110 are opened to dry the compressed air;

[0130] S2, when the water vapor adsorbed by the first adsorption tower 110 reaches saturation, the adsorption is switched to the second adsorption tower 120. The first solenoid valve 140 and the second solenoid valve 150 corresponding to the second adsorption tower 120 are opened, and the first solenoid valve 140 and the second solenoid valve 150 corresponding to the first adsorption tower 110 are closed. Then the third solenoid valve 240 and the fourth solenoid valve 250 corresponding to the first adsorption tower 110 are opened. The control positioning component 610 is engaged with the second positioning seat 630 corresponding to the first connection outlet 266, so that the first adsorption tower 110 is connected to the regeneration circulation module 200, and the first adsorption tower 110 enters the heating regeneration state.

[0131] S3, when the water vapor adsorbed by the second adsorption tower 120 reaches saturation, the adsorption is switched to the third adsorption tower 130. The first solenoid valve 140 and the second solenoid valve 150 corresponding to the third adsorption tower 130 are opened, and the first solenoid valve 140 and the second solenoid valve 150 corresponding to the second adsorption tower 120 are closed. Then the fourth solenoid valve 250 of the first adsorption tower 110 is closed, and the fifth solenoid valve 270 of the first adsorption tower 110 is opened. At the same time, the third solenoid valve 240 and the fourth solenoid valve 250 corresponding to the second adsorption tower 120 are opened. The control positioning component 610 cooperates with the first positioning seat 620 so that the first adsorption tower 110 and the second adsorption tower 120 are connected to the regeneration circulation module 200, so that the first adsorption tower 110 enters the cold blowing regeneration state and the second adsorption tower 120 enters the heating regeneration state.

[0132] S4. When the desiccant is working continuously, the adsorption state, heating regeneration state and cold blowing regeneration state on the first adsorption tower 110, the second adsorption tower 120 and the third adsorption tower 130 are switched cyclically.

[0133] When the desiccant is turned off, the adsorption tower that is last in the adsorption state is first put into the heating regeneration state, and the previous adsorption tower is put into the cold blowing regeneration state. Then the adsorption tower that is last in the adsorption state is put into the cold blowing regeneration state. At this time, the control positioning element 610 cooperates with the second positioning seat 630 corresponding to the second connection outlet 267 to dry all adsorption tower groups 100.

[0134] The adsorption towers in the first adsorption tower 110, the second adsorption tower 120, and the third adsorption tower 130 that are in the adsorption state and those that are in the regeneration state are independent of each other, and the air inside them is independently circulated, which can ensure the continuous and stable drying of the compressed gas.

[0135] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0136] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A zero-air-consumption desiccant dryer, characterized in that, include: An adsorption tower group (100) is used to adsorb moisture in compressed air. The adsorption tower group (100) includes a first adsorption tower (110), a second adsorption tower (120), and a third adsorption tower (130). A regeneration circulation module (200) is connected to an adsorption tower group (100). The regeneration circulation module (200) includes a blower (210), an evaporator (220), and a condenser (230). The intake pipe (300) is used for the input of compressed air; The air outlet pipe (400) is used for the output of compressed air; A liquid collection device (500) is used to collect liquid water produced by the condenser (230); During continuous operation, the first adsorption tower (110), the second adsorption tower (120), and the third adsorption tower (130) are respectively in adsorption state, heating regeneration state, and cold blowing regeneration state. The adsorption tower assembly (100) includes: The first solenoid valve (140) corresponds to the inlet end of the first adsorption tower (110), the second adsorption tower (120), and the third adsorption tower (130), and is connected to the air inlet pipe (300); The second solenoid valve (150) corresponds to the outlet end of the first adsorption tower (110), the second adsorption tower (120), and the third adsorption tower (130), respectively, and is connected to the gas outlet pipe (400); The first solenoid valve (140) and the second solenoid valve (150) are both controlled independently; The regeneration cycle module (200) also includes: The third solenoid valve (240) corresponds to the outlet end of the first adsorption tower (110), the second adsorption tower (120), and the third adsorption tower (130), respectively, and is connected to the condenser (230); The fourth solenoid valve (250) corresponds to the inlet end of the first adsorption tower (110), the second adsorption tower (120), and the third adsorption tower (130), and is connected to the evaporator (220); The blower (210) is connected between the evaporator (220) and the condenser (230), and the third solenoid valve (240) and the fourth solenoid valve (250) are controlled separately. The regeneration cycle module (200) also includes: The distributor (260) is located between the blower (210) and the evaporator (220); The fifth solenoid valve (270) corresponds to the inlet end of the first adsorption tower (110), the second adsorption tower (120), and the third adsorption tower (130), and is connected to the distributor (260); Each of the fifth solenoid valves (270) is individually controlled; The splitter (260) includes: Mounting housing (261); An adjusting member (262) is movably installed in a mounting housing (261), and the adjusting member (262) is provided with a through hole (263). A drive unit (264) is mounted on a mounting housing (261) and is used to drive the adjustment component (262) to move. The feedback component (600) is placed between the mounting housing (261) and the adjusting component (262) to determine the splitting state of the airflow; The mounting housing (261) is provided with a connection inlet (265), the blower (210) is connected to the connection inlet (265) through a pipe, the mounting housing (261) is provided with a first connection outlet (266), the evaporator (220) is connected to the first connection outlet (266) through a pipe, the mounting housing (261) is provided with a second connection outlet (267), and the fifth solenoid valve (270) is connected to the second connection outlet (267) through a pipe. The feedback component (600) includes: Positioning element (610) is installed on adjusting element (262); The first positioning seat (620) is mounted on the mounting housing (261); The second positioning seat (630) is installed on the mounting housing (261); The first sensor (640) corresponds to the first positioning seat (620) and the second positioning seat (630) respectively, and is used to detect the status of the first positioning seat (620) and the second positioning seat (630); The first spring (650) is installed on the first positioning seat (620) and the second positioning seat (630) respectively; The movable component (660) is movably connected to both sides of the first positioning seat (620); The second spring (670) has one end abutting against the movable part (660); The second sensor (680) is placed on the first positioning seat (620), and the second sensor (680) abuts against the other end of the second spring (670); The first positioning seat (620) is connected to the first connecting outlet (266), the second connecting outlet (267) and the connecting through hole (263), and the second positioning seat (630) is provided in two, respectively connected to the first connecting outlet (266) or the second connecting outlet (267) and the connecting through hole (263).

2. The zero-air-consumption desiccant dryer according to claim 1, characterized in that, The liquid collection device (500) includes: A collection box (510) is connected to a condenser (230) via a pipe, and the collection box (510) is provided with an air outlet; Connector (520) is placed at the air outlet of blower (210); The retractable part (530) is placed on the inner wall surface of the connector (520); The connector (520) is connected to the air outlet via a pipe, and the connection position corresponds to the contraction part (530).

3. A method of using the zero-air-consumption desiccant as described in claim 2, characterized in that, The specific steps include: S1, when the desiccant is started, the first solenoid valve (140) and the second solenoid valve (150) corresponding to the first adsorption tower (110) are opened to dry the compressed air; S2, when the water vapor adsorbed by the first adsorption tower (110) reaches saturation, the adsorption is switched to the second adsorption tower (120). The first solenoid valve (140) and the second solenoid valve (150) corresponding to the second adsorption tower (120) are opened, and the first solenoid valve (140) and the second solenoid valve (150) corresponding to the first adsorption tower (110) are closed. Then the third solenoid valve (240) and the fourth solenoid valve (250) corresponding to the first adsorption tower (110) are opened. The control positioning element (610) cooperates with the second positioning seat (630) corresponding to the first connection outlet (266) to connect the first adsorption tower (110) to the regeneration circulation module (200) and put the first adsorption tower (110) into the heating regeneration state. S3, when the water vapor adsorbed by the second adsorption tower (120) reaches saturation, switch to the third adsorption tower (130) for adsorption, open the first solenoid valve (140) and the second solenoid valve (150) corresponding to the third adsorption tower (130), close the first solenoid valve (140) and the second solenoid valve (150) corresponding to the second adsorption tower (120), then close the fourth solenoid valve (250) of the first adsorption tower (110), open the fifth solenoid valve (270) of the first adsorption tower (110), and at the same time open the third solenoid valve (240) and the fourth solenoid valve (250) corresponding to the second adsorption tower (120), control the positioning element (610) to cooperate with the first positioning seat (620), so that the first adsorption tower (110) and the second adsorption tower (120) are both connected to the regeneration circulation module (200), so that the first adsorption tower (110) enters the cold blowing regeneration state, and the second adsorption tower (120) enters the heating regeneration state; S4, when the desiccant is working continuously, the adsorption state, heating regeneration state and cold blowing regeneration state on the first adsorption tower (110), the second adsorption tower (120) and the third adsorption tower (130) are switched in a cycle; When the desiccant is turned off, the adsorption tower that is last in the adsorption state is first put into the heating regeneration state, the previous adsorption tower is put into the cold blowing regeneration state, and then the adsorption tower that is last in the adsorption state is put into the cold blowing regeneration state. At this time, the control positioning element (610) cooperates with the second positioning seat (630) corresponding to the second connection outlet (267) to dry all the adsorption tower groups (100).

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