Zero-gas-consumption single-tower adsorption type drying machine with heat recovery function

Abstract

The utility model relates to a zero-gas-consumption single-tower adsorption dryer with a heat recovery function, which is characterized in that a plate heat exchanger is arranged in an eighth pipeline for introducing dry air and exchanges heat with high-temperature wet air input by a first pipeline so as to heat regenerated dry air, so that the regeneration effect is improved, the heat recovery is effectively realized, and the energy consumption is reduced. And the energy loss is reduced. Meanwhile, the adsorption tower adopts a gas radial flowing mode, and compared with a gas axial flowing mode of an adsorption tower of a traditional drying machine, the pressure drop reducing effect is remarkable, the use cost of the system can be reduced, and the running smoothness of the system can be guaranteed. In addition, by means of the design, the adsorption efficiency of the drying agent is improved, and the overall performance of the drying machine is further enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas drying, specifically relates to zero gas consumption single tower adsorption type drying machine with heat recovery function. BACKGROUND

[0002] Adsorption type drying machine is widely used in the drying of compressed gas. In order to reduce the dew point of gas, the drying agent needs to be regenerated in time. For example Figure 1 As shown in the prior art zero gas consumption single tower adsorption type drying machine schematic diagram, the adsorption tower 1' is divided into drying area and regeneration area. The driving device drives the adsorption tower 1' to rotate, and the drying agent in the drying area is moved to the regeneration area for regeneration. The dried drying agent is sent back to the drying area for drying of the wet hot gas. The regeneration of the drying agent in the regeneration area is usually by introducing part of the gas dried by the drying area into the regeneration area, and these dried drying gases regenerate the drying agent in the regeneration area.

[0003] To optimize the gas recovery process after regeneration and realize zero gas consumption, these regenerated gases need to be introduced into the drying area for drying treatment again, because the regenerated gases contain a large amount of moisture. The adsorption tower 1' in the prior art adopts the axial gas flow mode, and the gas encounters a larger resistance when passing through the drying agent, thereby generating a significant pressure drop. At the same time, the wet hot gas provided by the air compressor 2' usually has a relatively high pressure, while the pressure of the gas in the regeneration area is relatively low due to the pressure drop, and the pressure difference causes the gas in the regeneration area to be unable to effectively mix with the wet hot gas of the air compressor 2' and enter the adsorption tower 1', thereby affecting the flow and circulation of the gas and affecting the regeneration of the drying agent and reducing the overall performance of the drying machine.

[0004] In order to reduce the resistance caused by the drying agent and reduce the pressure drop of the gas, a drying agent with a smaller resistance coefficient is usually selected, such as a honeycomb drying agent, but this increases the use cost of the drying machine. In addition, an ejector 3' can also be arranged in the system to improve the mixing process of the regenerated gas and the wet hot gas. The working principle of the ejector 3' is similar to that of a Venturi tube, the wet hot gas is injected at high speed through the ejector 3', a negative pressure is generated, thereby sucking in the regenerated gas, and the two are mixed and then sent into the adsorption tower 1'. Although the ejector 3' can effectively solve the problem of the integration of the regenerated gas in most cases, when the gas pressure of the air compressor 2' is low, the negative pressure generated by the ejector 3' is still insufficient to completely suck in the regenerated gas, resulting in poor circulation of the system and affecting the regeneration of the drying agent and the overall performance of the drying machine. At the same time, it still needs a drying agent with a smaller resistance coefficient, and the problem of high use cost has not been solved.

[0005] In addition, the wet air introduced from the air compressor is usually high in temperature. In order to reduce the temperature of the wet air and remove the moisture, a cooler is usually arranged before the wet air enters the adsorption tower for drying to cool and remove the moisture of the input wet air. This process can effectively reduce the drying burden of the adsorption tower and remove the moisture in the wet air. At the same time, in order to improve the drying and regeneration capacity of the dry air to the drying agent in the adsorption tower, a heating device is usually arranged to heat the dry air. However, the cooler will cause heat loss in the cooling process, resulting in energy waste. Therefore, how to effectively recover the heat lost by the cooler and use it to heat the dry air is a problem to be solved. Practical new type content

[0006] Therefore, the utility model provides zero gas consumption double tower adsorption type dryer with heat recovery function, mainly solves the technical problem that the adsorption tower of zero gas consumption single tower adsorption type dryer of prior art adopts axial gas flow mode and cannot effectively overcome large pressure drop, and the use cost is high, the overall system circulation of the dryer is not smooth, the regeneration of the drying agent is affected and the overall performance of the dryer is affected, and the low air pressure air compressor cannot be adapted and the heat cannot be recovered for heating the dry air to better dry the drying agent

[0007] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] Zero gas consumption single tower adsorption dryer, including adsorption tower, first pipeline for inputting wet air to be dried and second pipeline for outputting dry air; also including ejector, plate heat exchanger, third pipeline, fourth pipeline, fifth pipeline, seventh pipeline, eighth pipeline, first medium input pipe and second medium input pipe; the adsorption tower includes outer cylinder; the inner cylinder is rotatably arranged in the outer cylinder; the inner cylinder is coaxially arranged with the bottom closed core pipe; the inner cylinder is provided with an upper cover at the top for closing the inner cylinder and the core pipe; the outer wall of the core pipe and the inner wall of the inner cylinder are evenly distributed with multiple radial baffles; the baffles separate the inner cylinder into multiple closed placement rooms for placing drying agent; the central angle of the placement room is beta; a predetermined number of adjacent placement rooms are regeneration zones, and the remaining placement rooms are drying zones; the central angle of the regeneration zone is alpha; the airflow pipe is coaxially arranged in the core pipe; the airflow pipe and the core pipe form a first airflow chamber; the inner cylinder and the outer cylinder form a second airflow chamber; the first pipeline baffle and the second pipeline baffle are arranged in the airflow pipe along the circumference of the regeneration zone; the first pipeline baffle and the second pipeline baffle separate the airflow pipe into a first lumen and a second lumen with a central angle alpha; the airflow pipe wall of the first lumen and the second lumen is evenly distributed with multiple airflow holes; the upper cover is provided with an airflow pipe hole; the first medium input pipe is movably arranged through the airflow pipe hole and connected with the first lumen; the second medium input pipe is movably arranged through the airflow pipe hole and connected with the second lumen; the core pipe wall and the inner cylinder wall on the left and right sides of the baffle are evenly distributed with multiple air permeable holes; the combination of the first medium input pipe, the second medium input pipe and the airflow pipe above the upper cover is provided with a sealing plate; the top wall of the third sealing ring on the outer periphery of the airflow pipe hole is attached to the bottom wall of the sealing plate to close the top of the first airflow chamber; the bottom outer wall of the airflow pipe is provided with an airflow pipe convex ring; the air permeable holes of the core pipe wall are located above the airflow pipe convex ring; the airflow pipe convex ring is provided with a fourth sealing ring; the side surface of the fourth sealing ring away from the airflow pipe convex ring is attached to the inner wall of the core pipe to close the bottom of the first airflow chamber; the diameter of the upper cover is greater than the diameter of the inner cylinder; the top wall of the outer cylinder is provided with a first sealing ring; the top wall of the first sealing ring is attached to the bottom wall of the outer peripheral region of the upper cover to close the top of the second airflow chamber; the bottom outer wall of the inner cylinder is provided with an inner cylinder convex ring; the air permeable holes of the inner cylinder wall are located above the inner cylinder convex ring; the outer wall of the inner cylinder convex ring is provided with a second sealing ring; the side surface of the second sealing ring away from the inner cylinder convex ring is attached to the inner wall of the outer cylinder to close the bottom of the second airflow chamber; the inner wall of the outer cylinder is provided with a first sealing strip and a second sealing strip along the circumference of the regeneration zone; the side surface of the first sealing strip and the second sealing strip away from the outer cylinder is attached to the outer wall of the inner cylinder.The first sealing strip and the second sealing strip divide the second airflow chamber into a regeneration airflow output chamber and a dry airflow output chamber with a central angle of a; the outer wall of the airflow tube is respectively provided with a third sealing strip and a fourth sealing strip along the edge direction of the central angle of a of the regeneration area; the third sealing strip and the fourth sealing strip are attached to the inner wall of the core tube away from the side of the airflow tube; the third sealing strip and the fourth sealing strip divide the first airflow chamber into a regeneration airflow input chamber and a dry airflow input chamber with a central angle of a; the outer cylinder is respectively provided with a second medium output pipe in communication with the regeneration airflow output chamber and a first medium output pipe in communication with the dry airflow output chamber; the first pipeline is in communication with the first medium inlet of the plate heat exchanger; one end of the third pipeline is in communication with the first medium outlet of the plate heat exchanger, and the other end is in communication with the inlet of the ejector; the first medium input pipe is provided with a first pneumatic valve, and an end thereof away from the first lumen is in communication with the outlet of the ejector; the first medium input pipe between the ejector and the first lumen is provided with a first cooler; the second medium output pipe is provided with a fourth pneumatic valve; an end of the second medium output pipe away from the outer cylinder is in communication with the adsorption port of the ejector; one end of the fourth pipeline is in communication with the second pipeline, and the other end is in communication with an end of the first medium output pipe away from the outer cylinder; the first medium output pipe is provided with a third pneumatic valve; one end of the fifth pipeline is in communication with an end of the second medium input pipe away from the second lumen, and the other end is in communication with the second medium outlet of the plate heat exchanger through a seventh pipeline; the second medium input pipe is provided with a second pneumatic valve; one end of the eighth pipeline is in communication with the fourth pipeline, and the other end is in communication with the second medium inlet of the plate heat exchanger; the outer cylinder is provided with a driving device for stepwise driving the inner cylinder to rotate clockwise or counterclockwise by β° in the closed state of the first pneumatic valve, the second pneumatic valve, the third pneumatic valve and the fourth pneumatic valve.

[0009] Preferably, the eighth pipeline is provided with a fifth pneumatic valve.

[0010] Preferably, a sixth pipeline is arranged between the fourth pipeline and the fifth pipeline; and the sixth pipeline is provided with a second cooler.

[0011] Preferably, the sixth pipeline is further provided with a sixth pneumatic valve.

[0012] Optionally, a mesh partition plate is arranged between adjacent partition plates; and the partition plate divides the placement chamber into a first placement chamber for placing a drying agent and a second placement chamber for placing an adsorbent.

[0013] Preferably, the upper cover above the first placement chamber is provided with a drying agent injection pipe in communication therewith; the upper cover above the second placement chamber is provided with an adsorbent injection pipe in communication therewith; and the drying agent injection pipe and the adsorbent injection pipe are respectively provided with a cap at the top thereof.

[0014] Preferably, the top of the outer cylinder is provided with a top cover; the first medium input pipe and the second medium input pipe are fixedly connected with the top cover; the first medium input pipe and the second medium input pipe pass through the top cover and extend out of the top cover.

[0015] Optionally, the driving device comprises a turbine arranged at the bottom of the inner cylinder and a stepping motor arranged at the outer cylinder; an output shaft of the motor is provided with a worm; the turbine and the worm are in meshing connection.

[0016] Preferably, the inner cylinder wall is a sealing area near the left and right sides of the partition plate; the air permeable hole of the inner cylinder wall is located on the inner cylinder wall between the adjacent sealing areas.

[0017] The utility model at least has following beneficial effects:

[0018] It sets up the plate heat exchanger in the eighth pipe way of introducing dry air, carries out heat exchange with the high temperature wet air of the first pipe way input, heats the regenerated dry air, improves the regeneration capacity, and effectively carries out heat recovery, reduces energy loss; simultaneously, the adsorption tower of the utility model is provided with the outer cylinder, the inner cylinder is rotatably arranged in the outer cylinder, the core pipe is arranged in the inner cylinder, a plurality of partition plates are evenly distributed along the radial direction between the core pipe and the inner cylinder, the inner part of the inner cylinder is separated into a plurality of placement rooms with the central angle of β for placing the drying agent, the adjacent preset number of placement rooms are the regeneration area with the central angle of α, and the rest of the placement rooms are the drying area. The airflow pipe is placed in the core pipe, the first pipe way partition plate and the second pipe way partition plate are arranged in the airflow pipe along the central angle α line direction of the regeneration area, the first pipe way partition plate and the second pipe way partition plate separate the inner part of the airflow pipe into the first lumen and the second lumen with the central angle of α, the dry wet air is input from the first lumen, and the regenerated dry air is input from the second lumen. The first sealing strip and the second sealing strip are arranged on the inner wall of the outer cylinder along the central angle α line direction of the regeneration area, and the first sealing strip and the second sealing strip separate the second airflow room into the regeneration airflow output room and the drying airflow output room with the central angle of α. The third sealing strip and the fourth sealing strip are arranged on the outer wall of the airflow pipe along the central angle α line direction of the regeneration area, and the third sealing strip and the fourth sealing strip separate the first airflow room into the regeneration airflow input room and the dry airflow input room with the central angle of α. The setting makes the gas of the adsorption tower of the drying machine of the utility model flow along the radial direction, which is beneficial to reduce the pressure drop. The driving device drives the inner cylinder to rotate by β degrees, and the inner cylinder rotates by β degrees, that is, the position of one placement room, the saturated placement room in the drying area is rotated to the regeneration area to regenerate the drying agent, and the regenerated placement room in the regeneration area is rotated to the drying area to perform the adsorption operation of the regenerated drying agent. Compared with the axial gas flow mode of the adsorption tower of the prior art drying machine, the gas of the adsorption tower of the drying machine of the utility model flows along the radial direction, which is beneficial to reduce the pressure drop. Figure 23 As shown in the principle schematic diagram of the adsorption tower of the prior art drying machine, hereinafter referred to as "shaft", Figure 24The figure is a schematic diagram of the adsorption tower of the drying machine of the present application, hereinafter referred to as "Diameter", according to the pressure drop equation Darcy formula:

[0019]

[0020] Where Δp is the pressure drop of the gas through the pipeline; λ is the frictional resistance coefficient along the path; ρ is the velocity of the gas; v is the average velocity of the gas; h is the length of the pipeline; s is the cross-sectional area of the pipeline.

[0021] The frictional resistance coefficient along the path λ is related to the Reynolds number Re and the relative roughness of the pipe wall That is,

[0022] Under the same pipeline conditions, it can be assumed that λ is constant when the gas flows in the pipeline. In the above case, the difference between the axial flow and the radial flow of the gas is analyzed.

[0023] I. According to formula (1.1), the pressure drop generated by the axial flow of the gas is:

[0024]

[0025] Where H 轴 is the height of the adsorption tower; α is the central angle of the regeneration zone; R 轴 is the radius of the adsorption tower when the gas flows axially. As can be seen, in the axial flow mode, to reduce the pressure drop, only H 轴 can be reduced, or R 轴 can be increased, which results in the actual product being flattened, the floor area being increased, and the productization being difficult.

[0026] II. According to formula (1.1), the pressure drop generated by the radial flow of the gas is:

[0027]

[0028] Further arrangement of formula (1.3) can obtain:

[0029]

[0030] Where H 径 is the height of the adsorption tower; R1 is the outer diameter of the first gas flow chamber; R2 is the inner diameter of the second gas flow chamber; α is the central angle of the regeneration zone. As can be seen, in the radial flow mode, to reduce the pressure drop, only H 径 needs to be increased when R1 and R2 are constant. The increase of H 径 will not increase the floor area, which is easy to productize. Meanwhile, the increase of H 径 will also increase the volume of the placement chamber, which can effectively solve the decrease of the drying capacity caused by the decrease of the desiccant capacity when the axial flow is changed to the radial flow.

[0031] At the same time, compared with the axial flow mode in the prior art, the radial flow mode of the present application greatly increases the contact area of the gas and the desiccant, and the contact time is relatively short. This optimized gas flow design significantly improves the contact efficiency of the gas and the desiccant, thereby greatly improving the adsorption efficiency of the desiccant.

[0032] Therefore, the zero-gas-consumption double-tower adsorption dryer with heat recovery function has the advantages of low pressure drop, low use cost, smooth system operation, etc. At the same time, it has the advantages of improving the adsorption efficiency of the desiccant, effectively recovering heat, and reducing energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the prior art and the present application, the drawings needed in the description of the prior art and the embodiments of the present application will be briefly introduced below. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be derived from the provided drawings without creative labor.

[0034] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and are not used to limit the limiting conditions that the present application can be implemented. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effects and purposes that the present application can produce, should still fall within the scope of the technical content disclosed by the present application.

[0035] Figure 1 It is a schematic diagram of a zero-gas-consumption single-tower adsorption dryer in the prior art;

[0036] Figure 2 It is a structural schematic diagram of the zero-gas-consumption double-tower adsorption dryer with heat recovery function of the present application;

[0037] Figure 3 It is a structural schematic diagram of the adsorption tower of the zero-gas-consumption double-tower adsorption dryer with heat recovery function of the present application;

[0038] Figure 4 It is a structural schematic diagram of the adsorption tower of the zero-gas-consumption double-tower adsorption dryer with heat recovery function of the present application;

[0039] Figure 5 It is a top view of the adsorption tower of the zero-gas-consumption double-tower adsorption dryer with heat recovery function of the present application;

[0040] Figure 6 It is an attachment of the zero-gas-consumption double-tower adsorption dryer with heat recovery function of the present application; Figure 5A-A sectional view of the figure;

[0041] Figure 7 The utility model discloses a zero gas consumption double -tower adsorption type drying machine with heat recovery function's appendix Figure 6 B part partial close -up of the figure;

[0042] Figure 8 The utility model discloses a zero gas consumption double -tower adsorption type drying machine with heat recovery function's appendix Figure 6 C part partial close -up of the figure;

[0043] Figure 9 The utility model discloses a zero gas consumption double -tower adsorption type drying machine with heat recovery function's appendix Figure 6 D part partial close -up of the figure;

[0044] Figure 10 The utility model discloses a zero gas consumption double -tower adsorption type drying machine with heat recovery function's appendix Figure 6 E part partial close -up of the figure;

[0045] Figure 11 The utility model discloses a zero gas consumption double -tower adsorption type drying machine with heat recovery function's inner cylinder's structure schematic diagram;

[0046] Figure 12 The utility model discloses a zero gas consumption double -tower adsorption type drying machine with heat recovery function's inner cylinder's front view;

[0047] Figure 13 The utility model discloses a zero gas consumption double -tower adsorption type drying machine with heat recovery function's appendix Figure 12 F-F sectional view of the figure;

[0048] Figure 14 The utility model discloses a zero gas consumption double -tower adsorption type drying machine with heat recovery function's airflow pipe's structure schematic diagram;

[0049] Figure 15 The utility model discloses a zero gas consumption double -tower adsorption type drying machine with heat recovery function's airflow pipe's front view;

[0050] Figure 16 The utility model discloses a zero gas consumption double -tower adsorption type drying machine with heat recovery function's appendix Figure 15 G-G sectional view of the figure;

[0051] Figure 17 The utility model discloses a zero gas consumption double -tower adsorption type drying machine with heat recovery function's inner cylinder and airflow pipe's assembly state diagram;

[0052] Figure 18 The utility model discloses a zero gas consumption double -tower adsorption type drying machine with heat recovery function's outer cylinder's structure schematic diagram;

[0053] Figure 19 It is the front view of the outer cylinder of the zero-gas-consumption double-tower adsorption type drying machine with heat recovery function of the utility model;

[0054] Figure 20 It is the attached drawing of the zero-gas-consumption double-tower adsorption type drying machine with heat recovery function of the utility model; Figure 19 It is the H-H cross-sectional view of the zero-gas-consumption double-tower adsorption type drying machine with heat recovery function of the utility model;

[0055] Figure 21 It is the assembly state schematic diagram of the adsorption tower of the zero-gas-consumption double-tower adsorption type drying machine with heat recovery function of the utility model;

[0056] Figure 22 It is the working principle schematic diagram of the zero-gas-consumption double-tower adsorption type drying machine with heat recovery function of the utility model;

[0057] Figure 23 It is the principle schematic diagram of the adsorption tower of the prior art zero-gas-consumption single-tower adsorption type drying machine;

[0058] Figure 24 It is the principle schematic diagram of the adsorption tower of the zero-gas-consumption double-tower adsorption type drying machine with heat recovery function of the utility model;

[0059] Mark explanation:

[0060] 1, outer cylinder; 2, top cover; 3, first medium output pipe; 4, second medium output pipe; 5, first medium input pipe; 6, second medium input pipe; 7, upper cover; 701, drying agent injection pipe; 702, adsorbent injection pipe; 8, inner cylinder; 801, core pipe; 802, partition plate; 803, sealing area; 804, inner cylinder convex ring; 805, first placement chamber; 806, second placement chamber; 9, airflow pipe; 901, first pipe cavity; 902, second pipe cavity; 903, airflow pipe convex ring; 10, motor; 11, worm; 12, turbine; 13, first sealing ring; 14, second sealing ring; 15, third sealing ring; 16, sealing plate; 17, partition plate; 18, first sealing strip; 19, second sealing strip; 20, third sealing strip; 21, fourth sealing strip; 22, first pipeline partition plate; 23, fourth sealing ring; 24, first airflow chamber; 25, second airflow chamber; 26, cap; 27, second pipeline partition plate; 28, placement chamber; 29, first pneumatic valve; 30, second pneumatic valve; 31, third pneumatic valve; 32, fourth pneumatic valve; 33, first pipeline; 34, second pipeline; 35, third pipeline; 36, fourth pipeline; 37, fifth pipeline; 38, sixth pipeline; 39, seventh pipeline; 40, ejector; 41, first cooler; 42, second cooler; 43, plate heat exchanger; 44, fifth pneumatic valve; 45, sixth pneumatic valve; 46, eighth pipeline. DETAILED DESCRIPTION

[0061] The application will be further described in detail below with reference to the accompanying drawings.

[0062] In the description of the application: unless otherwise specified, the meaning of "a plurality of" is two or more than two. The terms "first", "second", "third" and the like in the application are intended to distinguish the objects referred to, and do not have a special meaning in the technical connotation aspect (for example, should not be understood as emphasizing importance or order, etc.). The expressions such as "include", "contain", "have" and the like also mean "not limited to" (some units, components, materials, steps, etc.).

[0063] The terms such as "upper", "lower", "left", "right", "intermediate" and the like referred to in the application are generally used for the purpose of intuitive understanding with reference to the drawings, and are not an absolute limitation on the positional relationship in the actual product. Changes in these relative positional relationships are also considered within the scope of the description of the application without departing from the technical concept disclosed in the application.

[0064] The zero-gas-consumption double-tower adsorption type drying machine with heat recovery function of the utility model, like Figures 2 to 21As shown, the adsorption tower, the first pipeline 33 and the second pipeline 34 are provided, the first pipeline 33 is usually used to access the air compressor, the input is the wet air to be dried, and the second pipeline 34 is used to output the dry air after drying. Also provided are the ejector 40, the plate heat exchanger 43, the third pipeline 35, the fourth pipeline 36, the fifth pipeline 37, the seventh pipeline 39, the eighth pipeline 46, the first medium input pipe 5 and the second medium input pipe 6. The adsorption tower comprises an outer cylinder 1, and an inner cylinder 8 is rotatably arranged in the outer cylinder 1. A bottom-closed core pipe 801 is fixedly arranged in the inner cylinder 8 coaxially. An upper cover 7 is mounted at the top of the inner cylinder 8, for closing the top of the inner cylinder 8 and the core pipe 801. A plurality of partition plates 17 are uniformly distributed in the radial direction between the outer wall of the core pipe 801 and the inner wall of the inner cylinder 8, the partition plates 17 divide the inner cylinder 8 into a plurality of closed placement rooms 28 for placing the drying agent, and the central angle of the placement room 28 is β; a predetermined number of adjacent placement rooms 28 are the regeneration zone, the number of placement rooms of the regeneration zone in the embodiment of the application is 2, and the remaining placement rooms 28 are the drying zone, and the central angle of the regeneration zone is α. A bottom-closed airflow pipe 9 is placed in the core pipe 801 coaxially. The airflow pipe 9 and the core pipe 801 form a first airflow room 24, and the inner cylinder 8 and the outer cylinder 1 form a second airflow room 25. The first pipeline partition plate 22 and the second pipeline partition plate 27 are arranged in the airflow pipe 9 along the circumferential line of the central angle α of the regeneration zone, respectively, the first pipeline partition plate 22 and the second pipeline partition plate 27 divide the airflow pipe 9 into a first lumen 901 and a second lumen 902, and the central angle of the second lumen 902 corresponds to α. The pipe wall of the airflow pipe 9 of the first lumen 901 and the second lumen 902 is uniformly distributed with a plurality of airflow holes. The upper cover 7 is provided with an airflow pipe hole. The first medium input pipe 5 is movably connected with the airflow pipe 9 through the airflow pipe hole at the bottom and communicates with the first lumen 901; the second medium input pipe 6 is movably connected with the airflow pipe 9 through the airflow pipe hole at the bottom and communicates with the second lumen 902. The pipe wall of the core pipe 801 and the cylinder wall of the inner cylinder 8 on the left and right sides of the partition plate 17 are uniformly distributed with a plurality of air permeable holes.To seal the first airflow chamber 24 and the second airflow chamber 25, the combination of the first medium input pipe 5, the second medium input pipe 6 and the airflow pipe 9 above the upper cover 7 is provided with a sealing plate 16, and the third sealing ring 15 is fixedly arranged on the top wall of the upper cover 7 around the airflow pipe hole, so that the top wall of the third sealing ring 15 is attached to the bottom wall of the sealing plate 16, for sealing the top of the first airflow chamber 24; the airflow pipe 9 is provided with an airflow pipe convex ring 903 on the bottom outer wall, the air-permeable hole of the core pipe 801 is located above the airflow pipe convex ring 903, and the fourth sealing ring 23 is sleeved on the outer wall of the airflow pipe convex ring 903, so that the side surface of the fourth sealing ring 23 away from the airflow pipe convex ring 903 is attached to the inner wall of the core pipe 801, for sealing the bottom of the first airflow chamber 24; the diameter of the upper cover 7 is greater than the diameter of the inner cylinder 8, and the first sealing ring 13 is fixedly arranged on the top wall of the outer cylinder 1, so that the top wall of the first sealing ring 13 is attached to the bottom wall of the outer peripheral region of the upper cover 7, for sealing the top of the second airflow chamber 25; the inner cylinder 8 is provided with an inner cylinder convex ring 804 on the bottom outer wall, and the air-permeable hole of the cylinder wall of the inner cylinder 8 is located above the inner cylinder convex ring 804, and the second sealing ring 14 is sleeved on the outer wall of the inner cylinder convex ring 804, so that the side surface of the second sealing ring 14 away from the inner cylinder convex ring 804 is attached to the inner wall of the outer cylinder 1, for sealing the bottom of the second airflow chamber 25. The first sealing strip 18 and the second sealing strip 19 are fixedly arranged on the inner wall of the outer cylinder 1 along the circumferential line of the regeneration area. The side surface of the first sealing strip 18 and the second sealing strip 19 away from the outer cylinder 1 is attached to the outer wall of the inner cylinder 8. In this way, the first sealing strip 18 and the second sealing strip 19 divide the second airflow chamber 25 into a regeneration airflow output chamber and a dry airflow output chamber with a central angle α. The third sealing strip 20 and the fourth sealing strip 21 are fixedly arranged on the outer wall of the airflow pipe 9 along the circumferential line of the regeneration area, so that the side surface of the third sealing strip 20 and the fourth sealing strip 21 away from the airflow pipe 9 is attached to the inner wall of the core pipe 801. In this way, the third sealing strip 20 and the fourth sealing strip 21 divide the first airflow chamber 24 into a regeneration airflow input chamber and a to-be-dried airflow input chamber with a central angle α. The outer cylinder 1 is provided with a second medium output pipe 4 communicating with the regeneration airflow output chamber and a first medium output pipe 3 communicating with the dry airflow output chamber. The first pipeline 33 communicates with the first medium inlet of the plate heat exchanger 43. One end of the third pipeline 35 communicates with the first medium outlet of the plate heat exchanger 43, and the other end communicates with the inlet of the ejector 40. The first medium input pipe 5 is provided with a first pneumatic valve 29, and the end away from the first lumen 901 communicates with the outlet of the ejector 40. The first medium input pipe 5 between the ejector 40 and the first lumen 901 is provided with a first cooler 41, which can be selected from commercially available coolers, which are well known to those skilled in the art and will not be described here. The wet air input by the air compressor is cooled and a certain amount of water is removed through the first cooler 41. The second medium output pipe 4 is provided with a fourth pneumatic valve 32, and the end of the second medium output pipe 4 away from the outer cylinder 1 communicates with the suction port of the ejector 40.The fourth pipe 36 is in communication with the second pipe 34 at one end and with the first medium output pipe 3 at the other end, and the first medium output pipe 3 is provided with a third pneumatic valve 31. The fifth pipe 37 is in communication with the second medium input pipe 6 at one end and with the second medium outlet of the plate heat exchanger 43 at the other end through the seventh pipe 39, and the second medium input pipe 6 is provided with a second pneumatic valve 30. The eighth pipe 46 is in communication with the fourth pipe 36 at one end and with the second medium inlet of the plate heat exchanger 43 at the other end. The driving device is arranged in the outer cylinder 1 and is used to drive the inner cylinder 8 to rotate clockwise or counterclockwise by β° in the closed state of the first pneumatic valve 29, the second pneumatic valve 30, the third pneumatic valve 31 and the fourth pneumatic valve 32, so as to sequentially move the dry agent saturated in the drying area to the regeneration area for regeneration operation, and meanwhile, the dry agent after regeneration in the regeneration area is sent back to the drying area for drying operation.

[0065] Preferably, in order to control the regeneration operation, for example, the regeneration operation can be stopped after being completed, and for this purpose, the fifth pneumatic valve 44 is arranged in the eighth pipe 46.

[0066] Preferably, the drying capacity of the dry agent is related to the performance of the drying machine, and for this purpose, the sixth pipe 38 is arranged between the fourth pipe 36 and the fifth pipe 37, and the sixth pipe 38 is provided with the second cooler 42. The second cooler 42 can be selected from commercially available coolers, which are well known to those skilled in the art and will not be described here. The dry air is cooled by the second cooler 42 to further remove a certain amount of moisture, improve the dryness and improve the regeneration capacity.

[0067] Preferably, at the same time, in order to control the regeneration operation, for example, the regeneration operation can be stopped after being completed, and for this purpose, the sixth pneumatic valve 45 is further arranged in the sixth pipe 38.

[0068] In addition, through the control of the fifth pneumatic valve 44 and the sixth pneumatic valve 45, the second cooler 42 and the plate heat exchanger 46 can work together or separately, and through the further drying or heating of the regenerated dry air, the dryness of the dry agent is adjusted, and then the drying capacity of the drying machine is adjusted to obtain different drying dew points and have stronger adaptability.

[0069] Optionally, in some applications, not only dry gas is required, but also impurities in the gas need to be filtered, which requires the use of adsorbent. For this purpose, the mesh partition plate 802 is arranged between the adjacent partition plates 17, and the mesh partition plate 802 divides the placement chamber 28 into the first placement chamber 805 for placing the dry agent and the second placement chamber 806 for placing the adsorbent. In this way, the wet air is dried by the dry agent at the same time and is also purified by the adsorbent.

[0070] Preferably, to facilitate the addition of the desiccant and the adsorbent, the upper cover 7 above the first placement chamber 805 is fixedly provided with a desiccant injection pipe 701 in communication therewith, and the upper cover 7 above the second placement chamber 806 is fixedly provided with an adsorbent injection pipe 702 in communication therewith, and the top of the desiccant injection pipe 701 and the adsorbent injection pipe 702 is provided with a cap 26. When adding the desiccant and the adsorbent, the cap 26 is opened, and the desiccant injection pipe 701 is used to add the desiccant to the first placement chamber 805, and the adsorbent injection pipe 702 is used to add the adsorbent to the second placement chamber 806.

[0071] Optionally, to achieve the fixed installation of the first medium input pipe 5 and the second medium input pipe 6, the top of the outer cylinder 1 is provided with a top cover 2, the first medium input pipe 5 and the second medium input pipe 6 are fixedly connected with the top cover 2, and the first medium input pipe 5 and the second medium input pipe 6 pass through the top cover 2 and extend out of the top cover 2.

[0072] Optionally, a preferred structure of the driving device is provided in the embodiments of the present application, and specifically, the driving device comprises a turbine 12 arranged at the bottom of the inner cylinder 8 and a stepping motor 10 arranged at the outer cylinder 1, one pulse of the motor 10 can drive the turbine 12 to rotate by β°, and the output shaft of the motor 10 is fixedly connected with a worm 11, so that the turbine 12 and the worm 11 are meshingly connected.

[0073] Preferably, when the stepping motor stops rotating and the drying area and the regeneration area perform corresponding operations, the first sealing strip 18 and the second sealing strip 19 are in sealing contact with the outer wall of the inner cylinder 8, and to prevent the air leakage caused by the air permeable holes of the cylinder wall of the inner cylinder 8, the left and right sides of the partition 17 are sealing areas 803, and the air permeable holes of the cylinder wall of the inner cylinder 8 are located between the adjacent sealing areas 803. The sealing areas 803 avoid the existence of the air permeable holes in the contact area between the first sealing strip 18, the second sealing strip 19 and the cylinder wall of the inner cylinder 8, and avoid the air leakage between the regeneration airflow output chamber and the drying airflow output chamber.

[0074] The working principle of the present application is as follows:

[0075] As shown in Figure 22 , first, the intermittent time of the motor 10 is set to the time when the desiccant in the placement chamber 28 of the drying area is saturated (at this time, the desiccant in the placement chamber 28 of the regeneration area has been regenerated), or the time when the desiccant in the placement chamber 28 of the regeneration area is completely regenerated (at this time, the desiccant in the placement chamber 28 of the drying area has not reached saturation), and the stepping rotation angle of the motor 10 is set to β°.

[0076] When the desiccant in the placing room 28 of the drying zone near the regenerating zone is saturated, or the desiccant in the placing room 28 of the regenerating zone near the drying zone is fully regenerated, the first pneumatic valve 29, the second pneumatic valve 30, the third pneumatic valve 31 and the fourth pneumatic valve 32 are closed, the motor 10 is started to drive the inner cylinder 8 to rotate β°, i.e. the position of one placing room 28, at this time the placing room 28 of the drying zone with saturated desiccant is turned to the regenerating zone, and the placing room 28 of the regenerating zone with fully regenerated desiccant is turned to the drying zone; then the first pneumatic valve 29, the second pneumatic valve 30, the third pneumatic valve 31 and the fourth pneumatic valve 32 are opened, and the drying and regenerating operations are continuously performed, and the work is repeated in this way.

[0077] When the desiccant in the placing room 28 of the drying zone near the regenerating zone is saturated, or the desiccant in the placing room 28 of the regenerating zone near the drying zone is fully regenerated, the first pneumatic valve 29, the second pneumatic valve 30, the third pneumatic valve 31 and the fourth pneumatic valve 32 are closed, the motor 10 is started to drive the inner cylinder 8 to rotate β°, i.e. the position of one placing room 28, at this time the placing room 28 of the drying zone with saturated desiccant is turned to the regenerating zone, and the placing room 28 of the regenerating zone with fully regenerated desiccant is turned to the drying zone; then the first pneumatic valve 29, the second pneumatic valve 30, the third pneumatic valve 31 and the fourth pneumatic valve 32 are opened, and the drying and regenerating operations are continuously performed, and the work is repeated in this way.

[0078] The application is described in detail above through general description and specific embodiments. It should be understood that based on the technical concept of the application, some conventional adjustments or further innovations can be made to the specific embodiments; however, as long as the technical concept of the application is not deviated, the technical solutions obtained by the conventional adjustments or further innovations also fall within the protection scope of the claims of the application.

Claims

1. Zero-gas-consumption single-column adsorption dryer with heat recovery function, comprising an adsorption column, a first duct (33) for inputting the moist air to be dried and a second duct (34) for outputting the dry air, characterized in that, Also include the ejector (40), plate heat exchanger (43), third pipeline (35), fourth pipeline (36), fifth pipeline (37), seventh pipeline (39), eighth pipeline (46), first medium input pipe (5) and second medium input pipe (6);The adsorption tower includes outer cylinder (1);The inner cylinder (8) is rotatably arranged in the outer cylinder (1);The inner cylinder (8) is coaxially arranged in the inner cylinder (8);The inner cylinder (8) is provided with an upper cover (7) at the top, which is used for closing the inner cylinder (8) and the core pipe (801) at the top;The outer wall of the core pipe (801) and the inner wall of the inner cylinder (8) are uniformly distributed with a plurality of radial baffles (17);The baffle (17) separates the inner cylinder (8) into a plurality of closed placement chambers (28) for placing desiccant;The central angle of the placement chamber (28) is β;The adjacent pre-set number of the placement chamber (28) is the regeneration zone, and the rest of the placement chamber (28) is the drying zone;The central angle of the regeneration zone is α;The airflow pipe (9) is coaxially arranged in the core pipe (801);The airflow pipe (9) and the core pipe (801) form a first airflow chamber (24);The inner cylinder (8) and the outer cylinder (1) form a second airflow chamber (25);The airflow pipe (9) is provided with a first pipeline baffle (22) and a second pipeline baffle (27) along the circumference of the regeneration zone α respectively;The first pipeline baffle (22), the second pipeline baffle (27) separate the airflow pipe (9) into a first lumen (901) and a second lumen (902) with a central angle α;The airflow pipe (9) wall of the first lumen (901) and the second lumen (902) is uniformly distributed with a plurality of airflow holes;The upper cover (7) is provided with an airflow pipe hole;The bottom of the first medium input pipe (5) can move through the airflow pipe hole and communicate with the first lumen (901);The bottom of the second medium input pipe (6) can move through the airflow pipe hole and communicate with the second lumen (902);The core pipe (801) wall and the inner cylinder (8) wall on the left and right sides of the baffle (17) are uniformly distributed with a plurality of through air holes;The combination of the first medium input pipe (5), the second medium input pipe (6) and the airflow pipe (9) above the upper cover (7) is provided with a sealing plate (16);The top wall of the upper cover (7) outside the airflow pipe hole is provided with a third sealing ring (15);The top wall of the third sealing ring (15) is attached to the bottom wall of the sealing plate (16), which is used for closing the top of the first airflow chamber (24);The bottom outer wall of the airflow pipe (9) is provided with an airflow pipe convex ring (903);The air hole of the core pipe (801) wall is located above the airflow pipe convex ring (903);The airflow pipe convex ring (903) is provided with a fourth sealing ring (23) outside the wall;The side surface of the fourth sealing ring (23) away from the airflow pipe convex ring (903) is attached to the inner wall of the core pipe (801), which is used for closing the bottom of the first airflow chamber (24).The upper cover (7) is larger in diameter than the inner cylinder (8); the top wall of the outer cylinder (1) is provided with a first sealing ring (13); the top wall of the first sealing ring (13) is attached to the bottom wall of the outer peripheral region of the upper cover (7), used to close the top of the second airflow chamber (25); the bottom outer wall of the inner cylinder (8) is provided with an inner cylinder protruding ring (804); the air permeable hole of the inner cylinder (8) is located above the inner cylinder protruding ring (804); the outer wall of the inner cylinder protruding ring (804) is sleeved with a second sealing ring (14); the side surface of the second sealing ring (14) away from the inner cylinder protruding ring (804) is attached to the inner wall of the outer cylinder (1), used to close the bottom of the second airflow chamber (25); the inner wall of the outer cylinder (1) is provided with a first sealing strip (18) and a second sealing strip (19) along the circumferential direction of the regeneration area; the side surface of the first sealing strip (18) and the second sealing strip (19) away from the outer cylinder (1) is attached to the outer wall of the inner cylinder (8); the first sealing strip (18) and the second sealing strip (19) divide the second airflow chamber (25) into a regeneration airflow output chamber and a dry airflow output chamber with a central angle α; the outer wall of the airflow pipe (9) is provided with a third sealing strip (20) and a fourth sealing strip (21) along the circumferential direction of the regeneration area; the side surface of the third sealing strip (20) and the fourth sealing strip (21) away from the airflow pipe (9) is attached to the inner wall of the core pipe (801); the third sealing strip (20) and the fourth sealing strip (21) divide the first airflow chamber (24) into a regeneration airflow input chamber and a to-be-dried airflow input chamber with a central angle α; the outer cylinder (1) is provided with a second medium output pipe (4) communicating with the regeneration airflow output chamber and a first medium output pipe (3) communicating with the dry airflow output chamber; the first pipeline (33) communicates with the first medium inlet of the plate heat exchanger (43); one end of the third pipeline (35) communicates with the first medium outlet of the plate heat exchanger (43), and the other end communicates with the inlet of the ejector (40); the first medium input pipe (5) is provided with a first pneumatic valve (29), and the end thereof away from the first lumen (901) communicates with the outlet of the ejector (40); the first medium input pipe (5) between the ejector (40) and the first lumen (901) is provided with a first cooler (41); the second medium output pipe (4) is provided with a fourth pneumatic valve (32); the end of the second medium output pipe (4) away from the outer cylinder (1) communicates with the adsorption port of the ejector (40); one end of the fourth pipeline (36) communicates with the second pipeline (34), and the other end communicates with the end of the first medium output pipe (3) away from the outer cylinder (1); the first medium output pipe (3) is provided with a third pneumatic valve (31);The fifth pipeline (37) communicates with the second medium input pipe (6) far from the second lumen (902) at one end and communicates with the second medium outlet of the plate heat exchanger (43) at the other end through the seventh pipeline (39); the second medium input pipe (6) is provided with a second pneumatic valve (30); the eighth pipeline (46) communicates with the fourth pipeline (36) at one end and communicates with the second medium inlet of the plate heat exchanger (43) at the other end; the outer cylinder (1) is provided with a driving device for stepwise driving the inner cylinder (8) to rotate clockwise or counterclockwise by β° in the closed state of the first pneumatic valve (29), the second pneumatic valve (30), the third pneumatic valve (31) and the fourth pneumatic valve (32).

2. The zero-air-loss single-column adsorption desiccator with heat recovery function according to claim 1, characterized in that, The eighth pipeline (46) is provided with a fifth pneumatic valve (44).

3. The zero-air-loss single-column adsorption desiccator with heat recovery function according to claim 2, characterized in that, The fourth pipeline (36) and the fifth pipeline (37) are provided with a sixth pipeline (38); the sixth pipeline (38) is provided with a second cooler (42).

4. The zero-air-loss single-column adsorption desiccator with heat recovery function according to claim 3, characterized by, The sixth pipeline (38) is further provided with a sixth pneumatic valve (45).

5. The zero-air-loss single-column adsorption desiccator with heat recovery function according to claim 4, characterized in that, The adjacent partition plates (17) are provided with a mesh partition plate (802); the mesh partition plate (802) divides the placing chamber (28) into a first placing chamber (805) for placing a desiccant and a second placing chamber (806) for placing an adsorbent.

6. The zero-air-loss single-column adsorption desiccator with heat recovery function according to claim 5, characterized in that, The upper cover (7) above the first placing chamber (805) is provided with a desiccant injection pipe (701) in communication therewith; the upper cover (7) above the second placing chamber (806) is provided with an adsorbent injection pipe (702) in communication therewith; the top of the desiccant injection pipe (701) and the adsorbent injection pipe (702) are each provided with a cap (26).

7. The zero-air-loss single-column adsorption desiccator with heat recovery function according to claim 6, characterized by The top of the outer cylinder (1) is provided with a top cover (2); the first medium input pipe (5) and the second medium input pipe (6) are fixedly connected with the top cover (2); the first medium input pipe (5) and the second medium input pipe (6) pass through the top cover (2) and extend out of the top cover (2) at the end away from the airflow pipe (9).

8. The zero-air-loss single-column adsorption desiccator with heat recovery function according to claim 4, characterized by, The driving device comprises a turbine (12) arranged at the bottom of the inner cylinder (8) and a stepping motor (10) arranged at the outer cylinder (1); the output shaft of the motor (10) is provided with a worm (11); the turbine (12) and the worm (11) are in meshing connection.

9. The zero-air-loss single-column adsorption desiccator with heat recovery function according to claim 4, characterized by, The wall of the inner cylinder (8) is a sealing area (803) near the left and right sides of the partition plate (17); the air-permeable hole of the inner cylinder (8) is located on the wall of the inner cylinder (8) between the adjacent sealing areas (803).

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