Molecular sieve adsorber for air separation equipment

Abstract

The invention provides a molecular sieve adsorber for air separation equipment. The molecular sieve adsorber comprises an outer protective cover, and a clean air outlet, a hot air inlet and a cooling air inlet are formed in one side of the outer protective cover; the other side of the outer shield is provided with a treated gas inlet, a cooling air outlet and a slide way, and the side part of the slide way is provided with a hot air outlet; a molecular sieve body is rotationally connected into the outer protective cover and comprises a fixed shell, a sieve plate, a first baffle and partition plates, and the interior of the fixed shell is divided into a plurality of storage cavities at equal intervals through the multiple partition plates; each storage cavity is slidably connected with a sieve plate, and one side of each partition plate is connected through a first baffle; the slideway is communicated with the hot air inlet through one storage cavity and is matched and connected with the sieve plate; pushing assemblies for limiting movement of the sieve plates and pushing the sieve plates to reset are arranged at one ends in the slideways; the bottom end of the slide way is provided with a rotary switching assembly for changing the surface of the sieve plate; blowback dust removal and impurity removal are carried out while screening is achieved; in addition, the molecular sieves are modularized, and flexibility is high.

Description

Technical Field

[0001] The invention relates to the technical field of air separation equipment, and in particular to a molecular sieve adsorber for air separation equipment. Background Art

[0002] Air separation plant is an industrial device used to separate air into its main components (such as oxygen, nitrogen and argon). These devices are widely used in industries such as chemical, metallurgy, medical, electronics and aerospace;

[0003] Molecular sieve adsorber is a very important component of air separation equipment. It is used to remove moisture, carbon dioxide and other impurities from the air to ensure the purity of the air entering the subsequent process. Molecular sieve adsorber uses the adsorption characteristics of molecular sieve materials to remove impurities from the air. Molecular sieve is a microporous material with a highly ordered pore structure that can adsorb molecules of specific size and polarity. When the molecular sieve is in use, a large amount of impurities will accumulate on the surface of the molecular sieve over time, resulting in reduced screening efficiency. In order to solve this problem, the traditional way is to use backblowing to remove impurities; that is, by blowing air from the other side of the molecular sieve. However, this impurity removal method requires the equipment to be shut down for operation, that is, the molecular sieve cannot be used during screening. Shutdown affects the operation of the air separation equipment and the output will be affected. In addition, the sieve plate needs to be replaced regularly. Shutdown for replacement and shutdown for backflushing have a great impact on production efficiency. Moreover, when the molecular sieve is screening, the side in contact with the gas to be screened has more impurities and higher wear, while the other side has fewer impurities and less wear. However, when the side in contact with the gas to be screened has too many impurities and greater wear, affecting the screening efficiency, it needs to be replaced, even if the other side has not yet reached the stage of replacement. Therefore, the cost is high, and there is a certain degree of underutilization, resulting in waste. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a molecular sieve adsorber for an air separation device, which solves the problems mentioned in the background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A molecular sieve adsorber for an air separation device comprises an outer shield, one side of which is provided with a clean air outlet, a hot air inlet and a cooling air inlet; the other side of the outer shield is provided with a treated gas air inlet, a cooling air outlet and a slideway, and the side of the slideway is provided with a hot air outlet;

[0007] The outer shield is internally rotatably connected to a molecular sieve body, the molecular sieve body comprises a fixed shell, a sieve plate, a baffle plate 1 and a partition plate, the interior of the fixed shell is equidistantly divided into a plurality of storage chambers by a plurality of partition plates; each storage chamber is slidably connected to a sieve plate, and one side of each partition plate is connected by a baffle plate 1; the slide is connected to the hot air inlet through one of the storage chambers, and the slide is connected to the sieve plate in cooperation; a pushing component for limiting the movement of the sieve plate and pushing the sieve plate to reset is provided at one end of the interior of the slide; a rotating switching component for changing the surface of the sieve plate is provided at the bottom end of the slide;

[0008] The cooling air input from the cooling air inlet is used to cool the heated sieve plate and is output through the cooling air outlet; the gas input from the processing gas inlet is filtered through the cooled sieve plate and then discharged through the clean air outlet;

[0009] When the pushing component limits the sieve plate to be in state one, the hot air input from the hot air inlet pushes the sieve plate in the storage chamber to extend outward from the fixed shell, so as to back-blow the sieve plate to remove dust;

[0010] When the pushing component limits the sieve plate to be in state 2, the hot air input from the hot air inlet pushes the sieve plate in the storage chamber to completely enter the slideway and cooperate with the rotation switching component to rotate the sieve plate 180°;

[0011] When the pushing component limits the sieve plate to state three, the hot air input from the hot air inlet pushes the sieve plate in the storage chamber to completely enter the slideway, and the rotating switching component drives the sieve plate to rise and fall to cooperate with the plate changing component to replace the sieve plate.

[0012] Furthermore, the molecular sieve body also includes a rotating shaft, a sleeve, a bracket and a driving assembly; the end of each partition is fixed to the sleeve, and the internal rotation of the sleeve is connected to the rotating shaft; brackets are fixed on both sides of the rotating shaft, and the brackets are fixed to the inside of the outer shield; a driving assembly is provided on the side of the fixed shell, and the driving assembly is used to drive the fixed shell to rotate around the rotating shaft; the driving assembly includes a belt, a connecting shaft and a driving motor, the output end of the driving motor is connected to the connecting shaft, and the connecting shaft and the fixed shell are connected by a belt; the fixed shell adopts a circular ring structure.

[0013] Furthermore, the inner wall of each storage cavity is provided with a slide groove 1 and a limit groove 1, the slide groove 1 is located on the inner wall of the fixed shell, and the limit groove 1 is located on the outer wall of the sleeve; a sliding block is provided at the top end of the sieve plate, and the sliding block is cooperatively connected to the slide groove 1; a limiting block is provided at the bottom end of the sieve plate, and the limiting block is cooperatively connected to the limiting groove 1.

[0014] Furthermore, an air inlet duct and an air outlet duct are fixed inside the outer shield; the air inlet duct includes a cooling air input channel and a hot air input channel, and the air outlet duct includes a hot air output channel and a cooling air output channel; the cooling air input channel, the hot air input channel, the hot air output channel and the cooling air output channel are all the same shape and size as the storage cavity; the hot air input from the hot air inlet is input into one of the storage cavities through the hot air input channel, and then is input into the slide through the hot air output channel; the cooling air input from the cooling air inlet is input into one of the storage cavities through the cooling air input channel, and then is input into the cooling air outlet through the cooling air output channel for discharge.

[0015] Furthermore, the inner wall of the hot air output channel is provided with a second slide groove and a second limit groove, the sliding block is cooperatively connected to the second slide groove, and the limit block is cooperatively connected to the second limit groove; the side of the cooling air output channel is provided with a second baffle.

[0016] Furthermore, the slide includes a limiting channel, an operating channel and a movable plate, a through hole is formed inside the limiting channel, and a limiting groove three and a slide groove three are provided at the top and bottom ends of the through hole; the limiting groove three is connected to the limiting groove two, and the slide groove three is connected to the slide groove two; the through hole is adapted to the screen plate, the slider is cooperatively connected to the slide groove three, and the limiting block is cooperatively connected to the limiting groove three; a circular hole is opened inside the operating channel, and a movable plate is provided at the bottom end of the operating channel; a limiting groove four is provided on the surface of the movable plate, the limiting groove four is connected to the limiting groove three, and the limiting groove four is cooperatively connected to the slider.

[0017] Furthermore, the rotation switching assembly includes an electric push rod 2 and a rotary motor; the output end of the rotary motor is connected to the bottom end of the movable plate, and the bottom end of the rotary motor is connected to the electric push rod 2.

[0018] Furthermore, the rotation switching assembly also includes plate tooth 1, a vertical plate, an inclined plate, plate tooth 2 and a gear; a socket is opened on the side of the limiting channel, the socket is matched to connect to the inclined plate, and plate tooth 2 is opened at the bottom end of the side of the inclined plate; a vertical plate is provided on the side of the rotating motor, and plate tooth 1 is provided on the side of the vertical plate; the gear is matched to be connected with plate tooth 1 and plate tooth 2.

[0019] Furthermore, the plate changing assembly includes a pushing plate, an electric push rod three, a storage table and an outer box; the storage table is provided inside the outer box, and the side of the outer box is provided with an electric push rod three; the output end of the electric push rod three is connected to the pushing plate.

[0020] Furthermore, it also includes a heat exchange component, which includes a shell, a spiral tube, a heater and a fan; the clean air outlet is connected to two pipes, one of which is connected to the cooling air inlet; the cooling air outlet is connected to one end of the shell, and a conically wound spiral tube is provided in the shell; one end of the spiral tube is connected to the hot air outlet, and the other end of the spiral tube extends out of the shell; the other end of the shell is provided with a heater, and the other end of the shell is connected to the hot air inlet through a fan.

[0021] The present invention provides a molecular sieve adsorber for air separation equipment. Compared with the prior art, it has the following beneficial effects:

[0022] The molecular sieve adsorber of the present invention can divide the molecular sieve body into a screening zone, a heating zone, and a cooling zone, and the molecular sieve body is provided with a rotating structure, so that the sieve plate on the surface of the molecular sieve body can pass through the three zones in sequence to work, realizing screening and backblowing to remove dust and impurities at the same time; in addition, the modular design of the molecular sieve is highly flexible.

[0023] In the molecular sieve adsorber of the present invention, the sieve plate of the molecular sieve body is arranged as a movable structure. When hot air is backblown to remove dust, the sieve plate in the dust removal state extends out of the fixed shell of the molecular sieve body, thereby preventing impurities dropped during backblowing to remove dust from entering the gap between the molecular sieve body and the air outlet conveying channel, thereby improving the efficiency of impurity removal.

[0024] The slide provided in the present invention cooperates with the rotating switching component to change the surface of the sieve plate, and cooperates with the pushing component to reset the sieve plate after changing the surface. When the sieve plate that has been used for a period of time is changed, the other side of the sieve plate can be in contact with the hot air input end, and hot air is blown on both sides to remove impurities; ensuring that the impurities are removed more completely. In addition, one side of the sieve plate may be blocked due to accumulated impurities, affecting the screening effect. Timely replacement of the other side for use can avoid the problem of decreased screening efficiency due to blockage and maintain good filtering and screening performance; by regularly replacing the used side, the frequency of cleaning or replacing the sieve plate can be reduced to a certain extent, thereby reducing maintenance costs and operating complexity; similarly, using the two sides of the sieve plate in turn helps to achieve a more uniform wear distribution and avoid the situation where one side is excessively worn while the other side is almost unused, which is very important for ensuring the screening quality; both sides of the sieve plate can be used, which is equivalent to doubling the life of a single side, thereby effectively extending the service life of the entire sieve plate.

[0025] The sieve plate of the present invention can be replaced when it is damaged or the screening efficiency is low. When replacing the sieve plate, it is only necessary to move the sieve plate entering the heating zone into the slideway, cooperate with the rotary switching component to descend, and use the plate changing component to change the plate. For the plate changing of the present invention, the entire molecular sieve equipment does not need to be shut down. It is only necessary to make the sieve plates that need to be replaced pass through the heating zone in turn to change the plates, which does not affect the use of the entire equipment and is simple and convenient to replace.

[0026] In order to reduce energy consumption and collect the heat of the backblown hot air, the present invention is provided with a heat exchange component, which can collect the hot air after backblowing and preheat the air about to enter the heating area. The characteristic structure of the spiral tube has high heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 The schematic diagram of the external structure of the molecular sieve adsorber for air separation equipment of the present invention is shown;

[0029] Figure 2 The schematic diagram of the structure of the molecular sieve body, the air inlet conveying channel and the air outlet conveying channel of the present invention is shown;

[0030] Figure 3 It shows a schematic diagram of the internal structure of the overall back-blowing dust removal of the present invention;

[0031] Figure 4 A schematic diagram of the local structure of the slideway of the present invention is shown;

[0032] Figure 5 The present invention shows Figure 3 A schematic diagram of the structure enlarged at point A;

[0033] Figure 6 The present invention shows Figure 3 Schematic diagram of the structure enlarged at B in FIG.

[0034] Figure 7 A schematic diagram showing the structure of the molecular sieve adsorber gas channel connection of the present invention;

[0035] Figure 8 The internal structure schematic diagram of the overall face-changing of the present invention is shown;

[0036] Fig. 9 A schematic diagram showing the structure of the integral sieve plate replacement of the present invention is shown;

[0037] As shown in the figure: 1. Outer shield; 11. Clean air outlet; 12. Hot air inlet; 13. Hot air outlet; 14. Process gas inlet; 15. Cooling air inlet; 16. Cooling air outlet; 2. Molecular sieve body; 21. Fixed shell; 211. Slideway 1; 22. Sieve plate; 221. Limit block; 222. Slider; 23. Rotating shaft; 24. Baffle 1; 25. Partition; 26. Sleeve; 261. Limiting groove 1; 27. Bracket; 28. Drive assembly; 281. Belt; 282. Connecting shaft; 283. Drive motor; 3. Air inlet conveyor; 31. Cooling air input channel; 32. Hot air input channel; 4. Air outlet conveyor; 41. Hot air output channel; 411. Slideway 2; 412. Limiting slot two; 42, cooling air output channel; 421, baffle two; 5, pushing assembly; 51, pushing frame; 52, electric push rod one; 6, slide; 61, limiting channel; 611, limiting slot three; 612, through hole; 613, slide three; 614, jack; 62, operation channel; 63, movable plate; 631, limiting slot four; 7, rotating switching assembly; 71, electric push rod two; 72, rotating motor; 73, plate tooth one; 74, vertical plate; 75, inclined plate; 76, plate tooth two; 77, gear; 8, plate changing assembly; 81, pushing plate; 82, electric push rod three; 83, storage table; 84, outer box; 9, heat exchange assembly; 91, shell; 92, spiral tube; 93, heater; 94, fan. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In order to solve the technical problems in the background technology, a molecular sieve adsorber for air separation equipment is provided as follows:

[0040] Combination Figure 1-9As shown, a molecular sieve adsorber for air separation equipment provided by the present invention comprises an outer protective cover 1, one side of the outer protective cover 1 is provided with a clean air outlet 11, a hot air inlet 12 and a cooling air inlet 15; the other side of the outer protective cover 1 is provided with a processing gas air inlet 14, a cooling air outlet 16 and a slide 6, and the side of the slide 6 is provided with a hot air outlet 13; the inner part of the outer protective cover 1 is rotatably connected with a molecular sieve body 2, wherein the processing gas air inlet 14 is connected to a fan to deliver the gas to be treated, which is filtered by the molecular sieve body 2 and then discharged from the clean air outlet 11, the hot air inlet 12 is opposite to the opening surface of the processing gas air inlet 14, the hot air inputted from the hot air inlet 12 heats the molecular sieve body 2 and cooperates with the blowing to reduce the adsorption performance of the molecular sieve body 2 and blow out the internal impurities, wherein the cooling air inlet 15 inputs cooling air to cool the heated molecular sieve body 2, and the impurities are discharged through the cooling air inlet 15.

[0041] The molecular sieve body 2 includes a fixed shell 21, a sieve plate 22, a baffle 24 and a partition 25. Figure 2 As shown, the interior of the fixed shell 21 is divided into a plurality of storage chambers at equal intervals by a plurality of partitions 25. For example, the fixed shell 21 forms six storage chambers by the partitions 25; each storage chamber is slidably connected with a sieve plate 22, and one side of each of the partitions 25 is connected by a baffle 1 24; that is, the partitions 25 at the end of the clean air outlet 11 are connected to each other by a baffle 1 24, wherein the baffle 1 24 is used to further block the sieve plate 22 to prevent the sieve plate 22 from sliding off the clean air outlet end under the push of gas pressure when the processing gas is input;

[0042] The molecular sieve body 2 also includes a rotating shaft 23, a sleeve 26, a bracket 27 and a driving assembly 28; Figure 3 and Figure 5 As shown, the end of each partition 25 is fixed to the sleeve 26, and the inner rotation of the sleeve 26 is connected to the rotating shaft 23; brackets 27 are fixed on both sides of the rotating shaft 23, and the brackets 27 are fixed inside the outer shield 1; a driving assembly 28 is provided on the side of the fixed shell 21, and the driving assembly 28 is used to drive the fixed shell 21 to rotate around the rotating shaft 23; specifically, the driving assembly 28 includes a belt 281, a connecting shaft 282 and a driving motor 283, the output end of the driving motor 283 is connected to the connecting shaft 282, and the connecting shaft 282 is connected to the fixed shell 21 through the belt 281; the fixed shell 21 adopts a circular ring structure. When the driving motor 283 is started, the connecting shaft 282 can rotate to drive the fixed shell 21 to rotate through the belt 281, thereby making each sieve plate 22 rotate synchronously, so that each sieve plate 22 can circulate through the heating zone, the cooling zone and the screening zone in succession, and complete the back-blowing dust removal and cooling after back-blowing while completing the filtration.

[0043] For example, Figure 2 As shown, an air inlet conveying channel 3 and an air outlet conveying channel 4 are fixed inside the outer protective cover 1; the molecular sieve body 2 rotates between the air inlet conveying channel 3 and the air outlet conveying channel 4, the air inlet conveying channel 3 includes a cooling air input channel 31 and a hot air input channel 32, and the air outlet conveying channel 4 includes a hot air output channel 41 and a cooling air output channel 42; the cooling air input channel 31, the hot air input channel 32, the hot air output channel 41 and the cooling air output channel 42 are all the same shape and size as the storage cavity; the hot air input by the hot air inlet 12 is input into one of the storage cavities through the hot air input channel 32, and then input into the slide 6 through the hot air output channel 41; the cooling air input by the cooling air inlet 15 is input into one of the storage cavities through the cooling air input channel 31, and then input into the cooling air outlet 16 through the cooling air output channel 42 for discharge.

[0044] The inner wall of each storage cavity is provided with a slide groove 211 and a limit groove 261, the slide groove 211 is located on the inner wall of the fixed shell 21, and the limit groove 261 is located on the outer wall of the sleeve 26; the top of the sieve plate 22 is provided with a slider 222, and the slider 222 is connected to the slide groove 211; the bottom end of the sieve plate 22 is provided with a limit block 221, and the limit block 221 is connected to the limit groove 261; the limit groove 261 and the slide groove 211 extend toward the air outlet conveying channel 4; in addition, the inner wall of the hot air output channel 41 is provided with a slide groove 411 and a limit groove 412, the slider 222 is connected to the slide groove 411, and the limit block 221 is connected to the limit groove 412; the side of the cooling air output channel 42 is provided with a baffle 421, and the baffle 421 is used to prevent the sieve plate 22 from sliding off during cooling. Exemplarily, a heating zone, a cooling zone and a sieving zone are formed on the surface of the molecular sieve body 2. Specifically, the area in the molecular sieve body 2 that is connected to the hot air input channel 32 and the hot air output channel 41 is the heating zone, the area that is connected to the cooling air input channel 31 and the cooling air output channel 42 is the cooling zone, and the remaining areas are sieving zones; since the molecular sieve body 2 is always in a rotating state, the sieve plates 22 of the molecular sieve body 2 pass through the three zones in turn for filtering, heating backblowing dust removal and cooling, that is, the cooling air input by the cooling air inlet 15 is used to cool the heated sieve plate 22 and output through the cooling air outlet 16; the gas input by the treated gas inlet 14 is filtered through the cooled sieve plate 22 and then discharged through the clean air outlet 11.

[0045] The slide 6 is connected to the hot air inlet 12 through one of the storage chambers, and the slide 6 is connected to the sieve plate 22; Figure 3 and 4As shown, the slide 6 includes a limiting channel 61, an operating channel 62 and a movable plate 63, a through hole 612 is formed inside the limiting channel 61, and a limiting groove three 611 and a slide groove three 613 are provided at the top and bottom ends of the through hole 612; the limiting groove three 611 is connected to the limiting groove two 412, and the slide groove three 613 is connected to the slide groove two 411; the through hole 612 is adapted to the sieve plate 22, the slider 222 is matched with the slide groove three 613, and the limiting block 221 is matched with the limiting groove three 611; a circular hole is provided inside the operating channel 62, and the diameter of the circular hole is larger than the longest side of the sieve plate 22, so that the sieve plate 22 can rotate in the circular hole, and a movable plate 63 is provided at the bottom end of the operating channel 62; a limiting groove four 631 is provided on the surface of the movable plate 63, the limiting groove four 631 is connected to the limiting groove three 611, and the limiting groove four 631 is matched with the slider 222.

[0046] A pushing assembly 5 for limiting the movement of the sieve plate 22 and pushing the sieve plate 22 to reset is provided at one end of the inner part of the slideway 6; wherein the pushing assembly 5 comprises a pushing frame 51 and an electric push rod 1 52, the pushing frame 51 adopts a "cross" structure, the electric push rod 1 52 is located inside the operating channel 62, and the output end of the electric push rod 1 52 is connected to the pushing frame 51;

[0047] The bottom end of the slideway 6 is provided with a rotation switching assembly 7 for changing the surface of the sieve plate 22; the rotation switching assembly 7 includes an electric push rod 2 71 and a rotation motor 72; the output end of the rotation motor 72 is connected to the bottom end of the movable plate 63, and the bottom end of the rotation motor 72 is connected to the electric push rod 2 71. When the sieve plate 22 enters the movable plate 63, that is, reaches the operating channel 62, the rotation motor 72 is started, and the rotation of the rotation motor 72 can make the movable plate 63 of the disc structure drive the sieve plate 22 to rotate 180°, so as to change the surface of the sieve plate 22;

[0048] In order to upgrade the sieve plate 22, so as to facilitate the replacement of the sieve plate 22 later, and reduce the overflow of internal hot air when the sieve plate 22 is raised or lowered; the rotary switching assembly 7 also includes a plate tooth 1 73, a vertical plate 74, an inclined plate 75, a plate tooth 2 76 and a gear 77; Figure 6 As shown, the side of the limiting channel 61 is provided with a plug hole 614, the plug hole 614 is matched with the inclined plate 75, and the bottom end of the side of the inclined plate 75 is provided with a plate tooth 2 76; the side of the rotating motor 72 is provided with a vertical plate 74, and the side of the vertical plate 74 is provided with a plate tooth 1 73; the gear 77 is matched with the plate tooth 1 73 and the plate tooth 2 76. When the electric push rod 2 71 is dropped to a suitable height, the plate tooth 1 73 is meshed with the gear 77, and as the electric push rod 2 71 continues to drop, the gear 77 is driven to rotate, and then the plate tooth 2 76 meshed with the gear 77 is driven to move, and the inclined plate 75 is driven to rise and be inserted into the plug hole 614 to block the heat from escaping.

[0049] Now, the state of the molecular sieve body 2 when in use is described in detail with reference to the accompanying drawings.

[0050] Use state 1: when the push assembly 5 limits the screen plate 22 to be in state 1, Figure 3 As shown, the hot air input from the hot air inlet 12 pushes the sieve plate 22 in the storage chamber connected to the air inlet conveyor belt 3 to extend outward from the fixed shell 21, so as to blow back the sieve plate 22 to remove dust; in this state, the electric push rod 52 is first started to push the push frame 51 to the position as shown in FIG. Figure 3 The molecular sieve body 2 is then rotated so that a sieve plate 22 in the heating zone is between the hot air input channel 32 and the hot air output channel 41, that is, in the heating zone, an adjacent sieve plate 22 is between the cooling air input channel 31 and the cooling air output channel 42, and the other sieve plates 22 are in the screening zone; the hot air input through the hot air inlet 12 pushes the sieve plate 22 in the heating zone to move from the fixed shell 21 to the hot air output channel 41, that is, the limit block 221 and the slider 222 of the sieve plate 22 partially enter the limit groove 412 and the slide groove 411 and stop under the obstruction of the push frame 51; at this time, the impurities in the sieve plate 22 in the heating zone are blown off by the hot air and discharged through the hot air outlet 13 along the slide 6.

[0051] When hot air is blown back to remove dust, the sieve plate in the dust removal state extends out of the fixed shell 21 of the molecular sieve body 2 to prevent impurities dropped during the backblowing dust removal from entering the gap between the molecular sieve body 2 and the air outlet conveying channel 4, thereby improving the efficiency of impurity removal.

[0052] Use state 2: when the pushing component 5 restricts the sieve plate 22 to be in state 2, the hot air input from the hot air inlet 12 pushes the sieve plate 22 in the storage chamber to completely enter the slideway 6 and cooperate with the rotation switching component 7 to rotate the sieve plate 22 180°; Figure 8 As shown, the electric push rod 1 52 is on the right side of the movable plate 63. At this time, the sieve plate 22 entering the hot air push heating zone enters the hot air output channel 41, passes through the hot air output channel 41, and enters the limit channel 61. When entering, the sieve plate 22 enters the through hole 612, and the limit block 221 and the slider 222 of the sieve plate 22 enter the limit groove 3 611 and the slide groove 3 613, and then enters the operation channel 62. The limit block 221 at the bottom of the sieve plate 22 entering the operation channel 62 enters the limit groove 4 631 on the surface of the movable plate 63. At this time, under the obstruction of the pushing component 5, the sieve plate 22 stops moving, and the rotating motor 72 is started, so that the sieve plate 22 entering the surface of the movable plate 63 can be rotated 180° to complete the surface change. After the surface change, start the electric push rod 1 52, and use the electric push rod 1 52 to push the sieve plate 22 after the surface change to reset;

[0053] After the sieve plate 22 is rotated and used for a period of time, the sieve plate 22 is pushed into the slideway 6 by hot air, and the sieve plate 22 is changed by the rotating switching component 7. The sieve plate 22 after the change of surface is reset by cooperating with the pushing component 5. The sieve plate 22 that has been used for a period of time is changed, so that the other side of the sieve plate 22 can be in contact with the hot air input end, and hot air is blown on both sides to remove impurities; ensure that the impurities are removed more completely. In addition, one side of the sieve plate 22 may be blocked by accumulated impurities, affecting the screening effect. Timely replacement of the other side for use can avoid the problem of reduced screening efficiency due to blockage and maintain good filtering and screening performance; by regularly changing the use side, the frequency of cleaning or replacing the sieve plate 22 can be reduced to a certain extent, thereby reducing maintenance costs and operating complexity; similarly, using the two sides of the sieve plate 22 in turn helps to achieve a more uniform wear distribution and avoid excessive wear on one side while the other side is almost unused, which is very important for ensuring screening quality; both sides of the sieve plate 22 can be used, which is equivalent to doubling the life of a single side, thereby effectively extending the service life of the entire sieve plate 22.

[0054] Use state three: when the pushing component 5 restricts the sieve plate 22 to be in state three, the hot air input from the hot air inlet 12 pushes the sieve plate 22 in the storage chamber to completely enter the slideway 6, and the rotating switching component 7 drives the sieve plate 22 to rise and fall to cooperate with the plate changing component 8 to replace the sieve plate 22; Fig. 9As shown, specifically, when the sieve plate 22 needs to be replaced after being used for a period of time, the sieve plate 22 to be replaced is placed in the heating zone. At this time, the state of the pushing component 5 is the same as the state 2. As the hot air pushes the sieve plate 22 to reach the surface of the movable plate 63 along the path of the state 2, the electric push rod 2 71 slowly retracts. During the retraction process, the electric push rod 2 71 meshes with the gear 77 through the plate tooth 1 73. As the electric push rod 2 71 continues to descend, it drives the gear 77 to rotate, thereby driving the plate tooth 2 76 meshing with the gear 77 to move, and driving the inclined plate 75 to rise. Inserted into the socket 614, it blocks the hot air from escaping from the opening formed by the movable plate 63; when the electric push rod 2 71 drives the movable plate 63 and the sieve plate 22 to be replaced is at the side of the plate changing assembly 8, the plate changing assembly 8 is used to replace the sieve plate 22; specifically, the plate changing assembly 8 includes a pushing plate 81, an electric push rod 3 82, a storage table 83 and an outer box 84; a storage table 83 is provided inside the outer box 84, and an electric push rod 3 82 is provided on the side of the outer box 84; the output end of the electric push rod 3 82 is connected to the pushing plate 81. When replacing the plate, the electric push rod 3 82 is started, and the push plate 81 is pushed by the electric push rod 3 82 to push the new sieve plate 22 against the sieve plate 22 to be replaced, until the new sieve plate 22 pushes down the sieve plate 22 to be replaced, and the replacement is completed. The surface of the storage table 83 is used to place the new sieve plate 22. The surface of the storage table 83 can be provided with a groove. When the movable plate 63 descends to the same height as the storage table 83, the groove on the surface of the storage table 83 and the limiting groove 4 631 on the surface of the movable plate 63 are connected to each other, so as to facilitate the replacement of the new sieve plate 22. The replaced sieve plate enters the heating zone under the action of the electric push rod 2 71 and the electric push rod 1 52.

[0055] When the sieve plate 22 is damaged or the screening efficiency is low, the sieve plate 22 is replaced. When the sieve plate 22 is replaced, it is only necessary to move the sieve plate 22 entering the heating zone into the slideway 6, cooperate with the rotary switching component 7 to descend, and use the plate changing component 8 to change the plate. For the plate changing of the present invention, the entire molecular sieve equipment does not need to be shut down. It is only necessary to make the sieve plates 22 that need to be replaced pass through the heating zone in turn to change the plate, which does not affect the use of the entire equipment and is simple and convenient to replace.

[0056] In order to reduce energy consumption and collect the heat of the back-blown hot air, the present invention also includes a heat exchange component 9, which includes a shell 91, a spiral tube 92, a heater 93 and a fan 94; the clean air outlet 11 is connected to two pipes, one of which is connected to the cooling air inlet 15, that is, to provide cooling air; the cooling air outlet 16 is connected to one end of the shell 91, and a conically coiled spiral tube 92 is provided in the shell 91; one end of the spiral tube 92 is connected to the hot air outlet 13, and the other end of the spiral tube 92 extends out of the shell 91; the other end of the shell 91 is provided with a heater 93, and the other end of the shell 91 is connected to the hot air inlet 12 through the fan 94. Figure 7 As shown, when the present invention is in use, the gas to be screened is transported to the screening area of ​​the molecular sieve body 2 through the processing gas inlet 14 in cooperation with the fan for screening, and then discharged through the clean air outlet 11, and a part of the discharged gas enters the cooling air inlet 15, passes through the cooling area of ​​the molecular sieve body 2 and is discharged from the cooling air outlet 16, enters the shell 91, and is heated by the heater 93. Then, it is transported to the heating area of ​​the molecular sieve body 2 through the fan 94 for backblowing, and the high-temperature air output by backblowing is input into the spiral tube 92 through the hot air outlet 13, and the hot air in the spiral tube 92 preheats the cooling air entering the shell 91; after working for a predetermined time, the drive component 28 is started, and the drive component 28 drives the molecular sieve body 2 to rotate, exemplarily rotating 60°; heating, cooling and screening can continue to work during the rotation; the rotating switched sieve plate 22 is heated, cooled and screened in turn; for the sieve plate 22 entering the heating area, the state one work is performed when backblowing; and the state two and state three work can also be set regularly.

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A molecular sieve adsorber for air separation equipment, characterized in that: include An outer shield, wherein a clean air outlet, a hot air inlet and a cooling air inlet are provided on one side of the outer shield; a process gas air inlet, a cooling air outlet and a slide are provided on the other side of the outer shield, and a hot air outlet is provided on the side of the slide; The outer shield is internally rotatably connected to a molecular sieve body, the molecular sieve body comprises a fixed shell, a sieve plate, a baffle plate 1 and a partition plate, the interior of the fixed shell is equidistantly divided into a plurality of storage chambers by a plurality of partition plates; each storage chamber is slidably connected to a sieve plate, and one side of each partition plate is connected by a baffle plate 1; the slide is connected to the hot air inlet through one of the storage chambers, and the slide is connected to the sieve plate in cooperation; a pushing component for limiting the movement of the sieve plate and pushing the sieve plate to reset is provided at one end of the interior of the slide; a rotating switching component for changing the surface of the sieve plate is provided at the bottom end of the slide; The cooling air input from the cooling air inlet is used to cool the heated sieve plate and is output through the cooling air outlet; the gas input from the processing gas inlet is filtered through the cooled sieve plate and then discharged through the clean air outlet; When the pushing component limits the sieve plate to be in state one, the hot air input from the hot air inlet pushes the sieve plate in the storage chamber to extend outward from the fixed shell, so as to back-blow the sieve plate to remove dust; When the pushing component limits the sieve plate to be in state 2, the hot air input from the hot air inlet pushes the sieve plate in the storage chamber to completely enter the slideway and cooperate with the rotation switching component to rotate the sieve plate 180°; When the pushing component limits the sieve plate to state three, the hot air input from the hot air inlet pushes the sieve plate in the storage chamber to completely enter the slideway, and the rotating switching component drives the sieve plate to rise and fall to cooperate with the plate changing component to replace the sieve plate.

2. The molecular sieve adsorber for air separation equipment according to claim 1, characterized in that: The molecular sieve body also includes a rotating shaft, a sleeve, a bracket and a driving assembly; the end of each partition is fixed to the sleeve, and the internal rotation of the sleeve is connected to the rotating shaft; brackets are fixed on both sides of the rotating shaft, and the brackets are fixed to the inside of the outer shield; a driving assembly is provided on the side of the fixed shell, and the driving assembly is used to drive the fixed shell to rotate around the rotating shaft; the driving assembly includes a belt, a connecting shaft and a driving motor, the output end of the driving motor is connected to the connecting shaft, and the connecting shaft and the fixed shell are connected by a belt; the fixed shell adopts a circular ring structure.

3. The molecular sieve adsorber for air separation equipment according to claim 2, characterized in that: The inner wall of each storage cavity is provided with a slide groove 1 and a limit groove 1, the slide groove 1 is located on the inner wall of the fixed shell, and the limit groove 1 is located on the outer wall of the sleeve; the top end of the sieve plate is provided with a sliding block, and the sliding block is connected to the slide groove 1; the bottom end of the sieve plate is provided with a limit block, and the limit block is connected to the limit groove 1.

4. The molecular sieve adsorber for air separation equipment according to claim 3, characterized in that: An air inlet duct and an air outlet duct are fixed inside the outer shield; the air inlet duct includes a cooling air input channel and a hot air input channel, and the air outlet duct includes a hot air output channel and a cooling air output channel; the cooling air input channel, the hot air input channel, the hot air output channel and the cooling air output channel are all the same in shape and size as the storage cavity; the hot air input from the hot air inlet is input into one of the storage cavities through the hot air input channel, and then is input into the slideway through the hot air output channel; the cooling air input from the cooling air inlet is input into one of the storage cavities through the cooling air input channel, and then is input into the cooling air outlet through the cooling air output channel for discharge.

5. The molecular sieve adsorber for air separation equipment according to claim 4, characterized in that: The inner wall of the hot air output channel is provided with a second slide groove and a second limit groove, the sliding block is cooperatively connected to the second slide groove, and the limit block is cooperatively connected to the second limit groove; the side of the cooling air output channel is provided with a second baffle.

6. The molecular sieve adsorber for air separation equipment according to claim 5, characterized in that: The slide includes a limiting channel, an operating channel and a movable plate, a through hole is formed inside the limiting channel, and a limiting groove three and a slide groove three are provided at the top and bottom ends of the through hole; the limiting groove three is connected to the limiting groove two, and the slide groove three is connected to the slide groove two; the through hole is adapted to the sieve plate, the slider is cooperatively connected to the slide groove three, and the limiting block is cooperatively connected to the limiting groove three; a circular hole is opened inside the operating channel, and a movable plate is provided at the bottom end of the operating channel; a limiting groove four is provided on the surface of the movable plate, the limiting groove four is connected to the limiting groove three, and the limiting groove four is cooperatively connected to the slider.

7. The molecular sieve adsorber for air separation equipment according to claim 6, characterized in that: The rotation switching assembly includes a second electric push rod and a rotary motor; the output end of the rotary motor is connected to the bottom end of the movable plate, and the bottom end of the rotary motor is connected to the second electric push rod.

8. The molecular sieve adsorber for air separation equipment according to claim 7, characterized in that: The rotary switching assembly also includes plate tooth 1, a vertical plate, an inclined plate, plate tooth 2 and a gear; a socket is provided on the side of the limiting channel, the socket is matched to connect to the inclined plate, and plate tooth 2 is provided at the bottom end of the side of the inclined plate; a vertical plate is provided on the side of the rotary motor, and plate tooth 1 is provided on the side of the vertical plate; the gear is matched to be connected with plate tooth 1 and plate tooth 2.

9. The molecular sieve adsorber for air separation equipment according to claim 1, characterized in that: The plate changing assembly includes a pushing plate, a third electric push rod, a storage table and an outer box; the storage table is provided inside the outer box, and a third electric push rod is provided on the side of the outer box; the output end of the third electric push rod is connected to the pushing plate.

10. A molecular sieve adsorber for an air separation plant according to any one of claims 1 to 9, characterized in that: It also includes a heat exchange component, which includes a shell, a spiral tube, a heater and a fan; the clean air outlet is connected to two pipes, one of which is connected to the cooling air inlet; the cooling air outlet is connected to one end of the shell, and a conically coiled spiral tube is provided in the shell; one end of the spiral tube is connected to the hot air outlet, and the other end of the spiral tube extends out of the shell; a heater is provided at the other end of the shell, and the other end of the shell is connected to the hot air inlet through a fan.

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