A methanol vapor high-efficiency recovery device and use method

Abstract

The present invention relates to the field of methanol vapor recovery, specifically a methanol vapor efficient recovery device and a method of use, comprising a support seat, a recovery tank is fixedly connected to the left side of the support seat, a treatment tank is fixedly connected to the right side of the support seat, a support plate is fixedly connected between the right side of the recovery tank and the left side of the treatment tank, an exhaust mechanism is fixedly connected between the upper part of the inner wall of the recovery tank and the top of the treatment tank, and a recovery switching mechanism is movably connected between the lower part of the recovery tank and the lower part of the treatment tank. This methanol vapor efficient recovery device consists of an exhaust mechanism and a recovery switching mechanism; the methanol gas that is not completely liquefied inside the recovery tank is regularly transported to the inside of the treatment tank along with the steam of the waste gas under the action of the exhaust mechanism, and then adsorption treatment is performed inside the treatment tank. While the waste steam is regularly discharged, the liquefaction treatment time of the methanol steam and the inside of the recovery tank is increased, and the methanol vapor recovery efficiency is effectively improved.

Description

Technical Field

[0001] The invention relates to the field of methanol vapor recovery, and in particular to a methanol vapor high-efficiency recovery device and a use method thereof. Background Art

[0002] Methanol is one of the basic organic raw materials with a wide range of uses. It is mainly used to prepare formaldehyde and is used as a methylating agent and solvent in the organic synthesis industry. It is the raw material for methyl tert-butyl ether, a component of oxygenated gasoline. It can also be added to gasoline or used alone as automobile fuel. It is also a raw material for the manufacture of certain pesticides and medicines.

[0003] In the actual production process, due to the accumulation of a large amount of non-condensable gas at the top of the tower, in order to balance the tower pressure, the distillation tower has to be in a long-term venting state. The volatilized methanol is burned along with the venting system, which will cause a huge loss of methanol. Usually, formaldehyde vapor needs to be recovered during the production process.

[0004] The existing patent (publication number: CN114470849B) discloses a methanol vapor high-efficiency recovery device, including a methanol tower, a cooler is installed on the outside of the methanol tower, and a secondary cooling component is installed on one side of the cooler. In the process of implementing the solution, the inventor found that the following problems in the prior art have not been well solved: 1. During the use of the methanol recovery device, the gaseous methanol is only liquefied at low temperature and then recovered, but in the process, some methanol that is not liquefied in time will still be discharged with the steam, affecting the recovery efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a methanol vapor efficient recovery device and a method of use, so as to solve the problems raised in the above-mentioned background technology: 1. During the use of some existing methanol recovery devices, gaseous methanol is only liquefied at low temperature for recovery, and the recovery efficiency is low. In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a methanol vapor efficient recovery device, comprising a support seat, a recovery tank is fixedly connected to the left side of the support seat, a treatment tank is fixedly connected to the right side of the support seat, a support plate is fixedly connected between the right side of the recovery tank and the left side of the treatment tank, and an exhaust mechanism is fixedly connected between the upper part of the inner wall of the recovery tank and the top of the treatment tank;

[0006] A recovery switching mechanism is movably connected between the lower part of the recovery tank and the lower part of the processing tank, and the middle part of the recovery switching mechanism is movably connected to the bottom of the support plate;

[0007] The left side of the outer wall of the recovery tank is fixedly connected with a coolant tank, the top of the coolant tank is fixedly connected with a spiral infusion tube, the spiral infusion tube is arranged inside the recovery tank, the middle part of the inner wall of the recovery tank is fixedly connected with an isolation plate, the top of the isolation plate is provided with a liquid collecting cone sleeve, the bottom of the liquid collecting cone sleeve is fixedly connected with a drain pipe, one end of the drain pipe extends to the outside of the recovery tank, one end of the spiral infusion tube passes through the liquid collecting cone sleeve and the isolation plate and is fixedly connected with an arc-shaped heat conducting plate matched with the recovery switching mechanism, the side wall of the arc-shaped heat conducting plate is fixedly connected to the inner wall of the recovery tank, the bottom of the arc-shaped heat conducting plate is fixedly connected with a coolant return pipe, one end of the coolant return pipe passes through the recovery tank and is fixedly connected to the bottom of the coolant tank;

[0008] A steam pipe is fixedly connected to the upper portion of the left side of the recovery tank, a waste gas discharge pipe is fixedly connected to the bottom of the treatment tank, and a return air pipe is fixedly connected between the bottom of the recovery tank and the surface of the steam pipe.

[0009] Preferably, the exhaust mechanism comprises a T-shaped sealing sleeve, the T-shaped sealing sleeve is fixedly connected to the upper part of the right side of the recovery tank, a sealing rod is slidably connected inside the T-shaped sealing sleeve, a limiting column is fixedly connected to the right side of the sealing rod, a limiting hole is provided at the bottom of the limiting column, an extrusion spring is fixedly connected between the right side of the limiting column and the right side of the inner wall of the T-shaped sealing sleeve, a limiting pin is vertically slidably connected to the bottom of the T-shaped sealing sleeve and matched with the limiting hole, and the bottom of the limiting pin passes through the T-shaped sealing sleeve and is fixedly connected to a guide rod;

[0010] The gear train is connected with the gear axle of the first end through the through hole of the gear train, and the gear train is connected with the gear train at the bottom of the gear train, and the gear train is connected with the gear train at the bottom of the gear train, and the gear train is connected with the gear train at the bottom of the gear train.

[0011] The left end of the gas pipe is overlapped with a cone head rod, the left end of the cone head rod is slidably connected to a T-shaped rod, the surface of the T-shaped rod is fixedly connected to the inner wall of the recovery tank, a sealing spring is movably connected between the middle part of the T-shaped rod and the left end of the cone head rod, an L-shaped hinged rod is hinged on the right side of the inner wall of the recovery tank, the lower part of the L-shaped hinged rod is slidably connected to the surface of the cone head rod, and the upper part of the L-shaped hinged rod is hinged to the left end of the sealing rod.

[0012] Preferably, a vertical hole is provided at the bottom of the right side of the T-shaped sealing sleeve, the limit pin is vertically slidably connected inside the vertical hole, a short spring is movably sleeved on the upper part of the limit pin, and a chamfer matching the limit pin is provided on the right side of the limit column.

[0013] Preferably, an L-shaped connecting rod is symmetrically fixedly connected to the top of the U-shaped bracket, and the two guide blocks are respectively fixedly connected to the ends of the two L-shaped connecting rods, and the guide blocks are configured as trapezoidal blocks.

[0014] Preferably, a hinge block is hingedly connected to the middle of the L-shaped hinge rod, and the end of the hinge block is fixedly connected to the inner wall of the recovery tank;

[0015] A waist-shaped groove is provided at the lower part of the L-shaped hinge rod, and the lower part of the L-shaped hinge rod is slidably connected to the surface of the cone head rod through the hinge groove, and a retaining ring matching the L-shaped hinge rod is fixedly connected to the left end of the cone head rod;

[0016] A groove is provided on the upper part of the L-shaped hinge rod, and adjustment grooves are provided on both sides of the inner wall of the groove. An adjustment pin is symmetrically fixedly connected to the left end of the sealing rod, and the two adjustment pins are respectively slidably connected to the inside of the two adjustment grooves;

[0017] Slide grooves are provided on both sides of the sealing rod, and sliding blocks are symmetrically fixedly connected to the inner wall of the T-shaped sealing sleeve. The two sliding blocks are respectively slidably connected inside the two slide grooves.

[0018] Preferably, the recycling switching mechanism comprises a rotating rod, the rotating rod is rotatably connected to the middle position of the top of the support seat, the lower part of the rotating rod is fixedly connected to an arc plate, and the top of the arc plate is symmetrically provided with an arc groove;

[0019] The top of the support seat is fixedly connected with an electric telescopic rod, the movable end of the electric telescopic rod is fixedly connected with an adjustment rack, and the lower part of the rotating rod is movably installed with an adjustment gear matched with the adjustment rack;

[0020] The middle part of the rotating rod is rotatably connected with a rectangular sleeve, and both sides of the rectangular sleeve are slidably connected with connecting blocks, and the two connecting blocks correspond to the two arc-shaped grooves one by one. The bottom of the connecting block is fixedly connected with a vertical pin, and the vertical pin is slidably connected to the inside of the corresponding arc-shaped groove. A compression spring is fixedly connected between the side wall of the connecting block and the inner wall of the rectangular sleeve;

[0021] The two connecting blocks are fixedly connected to a mounting frame on one side away from the rectangular sleeve, and the side wall of the lower part of the recovery tank and the side wall of the lower part of the treatment tank are both provided with through grooves, and the two mounting frames are movably plugged into the inside of the two through grooves respectively, and a molecular sieve adsorption cylinder is fixedly connected to the middle part of the mounting frame, and the molecular sieve adsorption cylinder on the left side overlaps the side wall of the arc-shaped heat conducting plate;

[0022] A positioning rod is fixedly connected to the top of the connecting block, and a turntable is rotatably connected to the bottom of the support plate. The bottom of the turntable is symmetrically provided with transverse grooves, and the upper parts of the two positioning rods are respectively slidably connected to the inside of the two transverse grooves, and movable grooves are symmetrically provided inside the turntable, and the two movable grooves correspond to the two transverse grooves one by one. Both sides of the inner wall of the movable groove are slidably connected with Y-shaped hinged rods, and an insertion rod is hinged between the opposite ends of the two Y-shaped hinged rods, and the bottom of the support plate is symmetrically provided with insertion holes, and the two insertion holes correspond to the two movable grooves one by one. The lower insertion rod extends to the inside of the transverse groove, and the upper insertion rod passes through the movable groove and is movably inserted into the inside of the corresponding insertion hole.

[0023] Preferably, the inner wall of the movable groove is symmetrically provided with cylindrical grooves, the two Y-shaped hinged rods are respectively slidably connected inside the two cylindrical grooves, and a return spring is movably connected between the surface of the Y-shaped hinged rod and the inner wall of the movable groove;

[0024] The top and bottom of the inner wall of the movable groove are both provided with round holes, the two insertion rods are respectively and movably inserted in the two round holes, and the upper part of the positioning rod is provided with an inclined surface matching with the corresponding insertion rod.

[0025] Preferably, the upper and lower parts of the inner wall of the treatment tank are fixedly connected with conical guide cylinders, and the two conical guide cylinders are overlapped with the top plate and the bottom of the corresponding molecular sieve adsorption cylinder respectively.

[0026] A method for using a methanol vapor efficient recovery device comprises the following steps:

[0027] S1. When in use, methanol vapor is transported to the inside of the recovery tank through the steam pipe, and at the same time, the coolant in the coolant tank is transported to the inside of the spiral infusion pipe, so that the coolant cools and liquefies the methanol vapor in the recovery tank during the internal transportation process of the spiral infusion pipe, and the liquefied methanol is discharged from the liquid collecting cone sleeve and the drain pipe for collection;

[0028] S2. As more steam is transported by the steam pipe, the air pressure inside the recovery tank increases. At this time, the air pressure drives the sealing rod to slide to the right inside the T-shaped sealing sleeve. When the sealing rod drives the limiting column to slide to the limiting pin position, the limiting hole on the limiting column cooperates with the limiting pin to limit the sealing rod. In this process, the movement of the sealing rod drives the hinged L-shaped hinged rod to deflect, so that the lower part of the L-shaped hinged rod deflects and presses the cone head rod to move to the left, so that the cone head rod releases the seal on the left end of the gas pipeline, so that the waste steam after the methanol liquefaction in the recovery tank enters the inside of the gas pipeline, and then the eccentric fan blades inside the gas pipeline The steam is transported by rotating, and at the same time, the shaft on the eccentric fan blade brings the small gear to mesh with the large gear, so that the large gear is meshed with the corresponding transmission rack, and the transmission rack brings the U-shaped bracket and the guide block to slowly move to the right. When the guide block contacts the guide rod at the lower part of the limit pin, the guide rod brings the limit pin down and releases the plugging with the limit hole. At this time, the sealing rod is reset to bring the L-shaped hinge rod and the cone head rod to reset and seal the gas transmission pipe position again, so that the waste steam can be regularly transported to the processing tank position, and in the process of regularly discharging the waste steam, the methanol steam can be heat-exchanged with the coolant inside the spiral infusion pipe for a long time;

[0029] S3. After the waste steam enters the treatment tank from the gas pipeline, the waste steam passes through the molecular sieve adsorption cylinder inside the treatment tank, and the molecular sieve adsorption cylinder adsorbs the methanol remaining in the waste steam. When the gas pipeline stops transporting the waste steam, the electric telescopic rod is started to engage the adjusting rack with the adjusting gear, so that the adjusting rack drives the rotating rod and the arc plate to rotate clockwise. During the rotation of the arc plate, the arc groove at the top of the arc plate cooperates with the vertical pin at the bottom of the connecting block to slide, so that the connecting block slides along the track in the middle of the rectangular sleeve. Then, the two connecting blocks move relative to each other with the corresponding molecular sieve adsorption cylinders through the mounting frame, so that the two molecular sieve adsorption cylinders are respectively moved out from the corresponding recovery tank and the treatment tank. In this process, the movement of the connecting block drives the top positioning rod to translate inside the turntable. When the positioning rod is pressed against the end position of the plug rod inside the horizontal groove, The plug rod at the lower position of the movable groove moves upward, and with the cooperation of the two Y-shaped hinged rods, the plug rod at the upper position of the movable groove moves downward to release the plugging with the bottom socket of the support plate. At this time, the connecting block, the vertical pin and the positioning rod all move to the limit position, and the rotating rod that continues to rotate with the adjusting gear drives the vertical pin, the connecting block and the positioning rod to rotate synchronously through the arc plate, so that the rectangular sleeve between the two connecting blocks drives the two molecular sieve adsorption cylinders to rotate 180 degrees, and the positions of the two molecular sieve adsorption cylinders are switched. Finally, when the electric telescopic rod drives the adjusting rack to reset and release the meshing with the adjusting gear, the compression spring elastically recovers and drives the connecting block to reset and move, and the two connecting blocks move back to back, so that the two molecular sieve adsorption cylinders are inserted into the inside of the recovery tank and the treatment tank respectively, and at the same time, the Y-shaped hinged rod drives the plug rod to reset and move, so that the plug rod at the upper part of the movable groove is inserted into the corresponding socket to limit the turntable;

[0030] S4. During the heat exchange process of the coolant inside the spiral infusion tube, the discharged coolant is heated and transported to the position of the arc-shaped heat transfer plate, and the heated arc-shaped heat transfer plate heats the molecular sieve adsorption cylinder at the lower position of the treatment tank, so that a small amount of methanol adsorbed inside the molecular sieve adsorption cylinder is heated and vaporized and separated. The separated methanol flows back into the steam pipe from the bottom of the recovery tank for secondary recovery treatment.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] In the present invention, by using a recovery tank, a treatment tank, an exhaust mechanism and other components in coordination, the methanol gas that is not completely liquefied inside the recovery tank is periodically transported to the interior of the treatment tank along with the waste gas steam under the action of the exhaust mechanism, and then adsorption treatment is performed inside the treatment tank. While the waste steam is regularly discharged, the liquefaction treatment time of the methanol steam and the inside of the recovery tank is increased, thereby effectively improving the methanol steam recovery efficiency.

[0033] In the present invention, after a small amount of methanol in the exhaust gas vapor is adsorbed and processed by the coordinated use of components such as a recovery tank, a treatment tank and a recovery switching mechanism, the positions of the two molecular sieve adsorption cylinders are switched regularly with the cooperation of the recovery switching mechanism, and at the same time, the coolant after heat exchange enters the interior of the arc-shaped heat conduction plate through the spiral infusion tube position, and then the arc-shaped heat conduction plate heats the adjacent molecular sieve adsorption cylinders, so that the adsorbed methanol is vaporized again and refluxed into the steam pipe and the recovery tank for secondary liquefaction recovery treatment, thereby further improving the methanol recovery effect.

[0034] In the present invention, by using the spiral infusion pipe and the steam pipe and other components in coordination, under the action of the spiral infusion pipe with a trapezoidal structure, the methanol vapor transported by the steam pipe can effectively exchange heat with the coolant inside the spiral infusion pipe, thereby increasing the heat exchange time and contact area between the coolant and the methanol vapor. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A side view of the location of the recovery tank and the treatment tank of the present invention;

[0036] Figure 2 A side sectional view of the location of the recovery tank of the present invention;

[0037] Figure 3 For the present invention Figure 2 A magnified view of the structure at center A;

[0038] Figure 4 It is a side view of the U-shaped bracket and the transmission rack position of the present invention;

[0039] Figure 5 It is a side cross-sectional view of a local position of a T-shaped sealing sleeve and a sealing rod of the present invention;

[0040] Figure 6 For the present invention Figure 5 A magnified view of the structure at B in the middle;

[0041] Figure 7 It is a side cross-sectional view of a local position of the processing tank and the through groove of the present invention;

[0042] Figure 8 It is a cross-sectional view of a local position of the support plate and the turntable of the present invention;

[0043] Fig. 9 For the present invention Figure 8 A magnified view of the structure at C in the middle;

[0044] Fig.10 It is an expanded view of the position of the spiral infusion tube and the liquid collecting cone sleeve of the present invention;

[0045] Fig.11 A top cross-sectional view of the position of the curved plate and the rotating rod of the present invention;

[0046] Fig.12 is a three-dimensional diagram of the arc-shaped heat-conducting plate of the present invention;

[0047] Fig.13 It is a cross-sectional view of the position of the limiting column and the limiting hole of the present invention.

[0048] In the figure: 1. Support seat; 2. Recovery tank; 3. Treatment tank; 4. Support plate; 5. Exhaust mechanism; 501. T-type sealing sleeve; 502. Sealing rod; 503. Limiting column; 504. Limiting hole; 505. Extrusion spring; 506. Limiting pin; 507. Guide rod; 508. Air pipe; 509. Shaft; 510. Eccentric fan blade; 511. Small gear; 512. Large gear; 513. Sliding rod; 514. U-shaped bracket; 515. Reset spring; 516. Guide block; 517. Transmission rack; 518. Cone rod; 519. T-type rod; 520. Sealing spring; 521. L-shaped hinged rod; 6. Recovery switching mechanism; 601. Rotating rod; 602. Arc plate; 603, arc groove; 604, electric telescopic rod; 605, adjustment rack; 606, adjustment gear; 607, rectangular sleeve; 608, connection block; 609, vertical pin; 610, compression spring; 611, mounting frame; 612, through groove; 613, molecular sieve adsorption cylinder; 614, positioning rod; 615, turntable; 616, horizontal groove; 617, movable groove; 618, Y-shaped hinged rod; 619, plug rod; 620, socket; 7, coolant tank; 8, spiral infusion tube; 9, isolation plate; 10, liquid collecting cone sleeve; 11, drain pipe; 12, arc heat conduction plate; 13, coolant reflux pipe; 14, steam pipe; 15, exhaust gas discharge pipe; 16, return air pipe. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 technical personnel in this field without creative work are within the scope of protection of the present invention.

[0050] See also Figures 1 to 13 The present invention provides a technical solution: a methanol vapor efficient recovery device, comprising a support base 1, a recovery tank 2 is fixedly connected to the left side of the support base 1, a treatment tank 3 is fixedly connected to the right side of the support base 1, a support plate 4 is fixedly connected between the right side of the recovery tank 2 and the left side of the treatment tank 3, and an exhaust mechanism 5 is fixedly connected between the upper part of the inner wall of the recovery tank 2 and the top of the treatment tank 3.

[0051] A recovery switching mechanism 6 is movably connected between the lower part of the recovery tank 2 and the lower part of the processing tank 3 , and the middle part of the recovery switching mechanism 6 is movably connected to the bottom of the support plate 4 .

[0052] A coolant tank 7 is fixedly connected to the left side of the outer wall of the recovery tank 2, and a spiral infusion tube 8 is fixedly connected to the top of the coolant tank 7. The spiral infusion tube 8 is arranged inside the recovery tank 2. An isolation plate 9 is fixedly connected to the middle of the inner wall of the recovery tank 2. A liquid collecting cone sleeve 10 is arranged on the top of the isolation plate 9. A drainage pipe 11 is fixedly connected to the bottom of the liquid collecting cone sleeve 10. One end of the drainage pipe 11 extends to the outside of the recovery tank 2. One end of the spiral infusion tube 8 passes through the liquid collecting cone sleeve 10 and the isolation plate 9 and is fixedly connected to an arc-shaped heat conducting plate 12 that cooperates with the recovery switching mechanism 6. The side wall of the arc-shaped heat conducting plate 12 is fixedly connected to the inner wall of the recovery tank 2. A coolant return pipe 13 is fixedly connected to the bottom of the arc-shaped heat conducting plate 12. One end of the coolant return pipe 13 passes through the recovery tank 2 and is fixedly connected to the bottom of the coolant tank 7. It should be noted that an infusion pump is fixedly connected between the top of the coolant tank 7 and the end of the spiral infusion tube 8. The infusion pump allows the coolant inside the coolant tank 7 to enter the arc-shaped heat conduction plate 12 from the spiral infusion tube 8 and then enter the coolant tank 7 from the position of the coolant return tube 13 for circulation. The spiral infusion tube 8 is set to a trapezoidal spiral shape to increase the contact time between the spiral infusion tube 8 and the methanol vapor, thereby improving the methanol liquefaction effect.

[0053] A steam pipe 14 is fixedly connected to the upper part of the left side of the recovery tank 2, an exhaust gas discharge pipe 15 is fixedly connected to the bottom of the treatment tank 3, and a return gas pipe 16 is fixedly connected between the bottom of the recovery tank 2 and the surface of the steam pipe 14. It should be noted that: the steam pipe 14 is arranged obliquely toward the spiral infusion pipe 8, so that the methanol vapor can better contact the spiral infusion pipe 8; one end of the exhaust gas discharge pipe 15 is connected to the burner, which is convenient for burning the trace amount of unrecovered methanol.

[0054] In this embodiment, Figures 1 to 13 As shown, the exhaust mechanism 5 includes a T-shaped sealing sleeve 501, which is fixedly connected to the upper part of the right side of the recovery tank 2, and a sealing rod 502 is slidably connected inside the T-shaped sealing sleeve 501. The right side of the sealing rod 502 is fixedly connected to a limiting column 503, and a limiting hole 504 is provided at the bottom of the limiting column 503. An extrusion spring 505 is fixedly connected between the right side of the limiting column 503 and the right side of the inner wall of the T-shaped sealing sleeve 501, and a limiting pin 506 matching the limiting hole 504 is vertically slidably connected to the bottom of the T-shaped sealing sleeve 501. The bottom of the limiting pin 506 penetrates the T-shaped sealing sleeve 501 and is fixedly connected to a guide rod 507. It should be noted that: a cross bar is fixedly connected to the right side of the limiting column 503, and the cross bar is movably inserted in the right side of the T-shaped sealing sleeve 501. The cross bar is set to improve the stability of the sealing rod 502 in the sliding process inside the T-shaped sealing sleeve 501.

[0055] An air pipe 508 is fixedly connected to the middle of the right side of the recovery tank 2, and the right end of the air pipe 508 is fixedly connected to the top of the processing tank 3. The left side of the air pipe 508 is rotatably connected to a shaft 509, and the middle part of the shaft 509 is fixedly connected to an eccentric fan blade 510. Both ends of the shaft 509 penetrate the air pipe 508 and are fixedly connected to a small gear 511. The front and rear sides of the air pipe 508 are rotatably connected to large gears 512. The two large gears 512 correspond to the two small gears 511 one by one. The top of the small gear 511 meshes with the bottom of the corresponding large gear 512. The right side of the recovery tank 2 A sliding rod 513 is symmetrically fixedly connected and arranged between the T-shaped sealing sleeve 501 and the air supply pipe 508. A U-shaped bracket 514 is slidably connected between the two sliding rods 513. A return spring 515 is movably sleeved on the surface of the sliding rod 513. A guide block 516 that cooperates with the guide rod 507 is symmetrically fixedly connected to the top of the U-shaped bracket 514. A transmission rack 517 is symmetrically fixedly connected to the bottom of the U-shaped bracket 514. The two transmission racks 517 correspond one-to-one to the two large gears 512, and the bottom of the transmission rack 517 is meshed with the top of the corresponding large gear 512. It should be noted that: an annular groove is provided inside the left side of the gas pipe 508, and the shaft 509 is rotatably connected between the two sides of the inner wall of the annular groove. The surface of the eccentric fan blade 510 overlaps the inner wall of the annular groove, and the eccentric fan blade 510 and the annular groove are eccentrically arranged on the left side of the gas pipe 508; when the gas pipe 508 is transporting steam, the eccentric fan blade 510 rotates with the shaft 509 and the small gear 511, so that the small gear 511 is engaged with the large gear 512, and then the large gear 512 is engaged with the transmission rack 517 to move the U-shaped bracket 514 slowly to the right. When the side wall of the guide block 516 at the top of the U-shaped bracket 514 contacts the guide rod 507 at the bottom of the limit pin 506, the guide rod 507 moves downward with the limit pin 506, so that the limit pin 506 is released from the insertion of the limit hole 504 at the bottom of the limit column 503, and the sealing rod 502 can be reset.

[0056] The left end of the gas pipe 508 is overlapped with a cone head rod 518, and the left end of the cone head rod 518 is slidably connected with a T-shaped rod 519, the surface of the T-shaped rod 519 is fixedly connected to the inner wall of the recovery tank 2, and a sealing spring 520 is movably connected between the middle part of the T-shaped rod 519 and the left end of the cone head rod 518, and an L-shaped hinged rod 521 is hinged on the right side of the inner wall of the recovery tank 2, the lower part of the L-shaped hinged rod 521 is slidably connected to the surface of the cone head rod 518, and the upper part of the L-shaped hinged rod 521 is hinged to the left end of the sealing rod 502. It should be noted that: the surface of the T-shaped rod 519 is fixedly connected with a mounting rod, and the T-shaped rod 519 is fixedly connected to the inner wall of the recovery tank 2 through the mounting rod; the left end of the gas pipe 508 is set as a conical hole, and the cone head rod 518 is pressed by the sealing spring 520 to be inserted into the left end position of the gas pipe 508, so as to seal the left end of the gas pipe 508.

[0057] In this embodiment, Figures 1 to 13 As shown, a vertical hole is provided at the bottom of the right side of the T-shaped sealing sleeve 501, a stop pin 506 is vertically slidably connected inside the vertical hole, a short spring is movably sleeved on the upper part of the stop pin 506, and a chamfer is provided on the right side of the stop column 503 to match the stop pin 506. It should be noted that the top of the stop pin 506 is set as an arc surface, and when the stop column 503 moves to the right, it is convenient for the stop hole 504 at the bottom of the stop column 503 to match and plug with the stop pin 506.

[0058] In this embodiment, Figures 1 to 13 As shown, an L-shaped connecting rod is symmetrically fixedly connected to the top of the U-shaped bracket 514, and two guide blocks 516 are respectively fixedly connected to the ends of the two L-shaped connecting rods, and the guide blocks 516 are set as trapezoidal blocks.

[0059] In this embodiment, Figures 1 to 13 As shown, a hinge block is hingedly connected to the middle of the L-shaped hinge rod 521 , and the end of the hinge block is fixedly connected to the inner wall of the recovery tank 2 .

[0060] A waist-shaped groove is provided at the lower part of the L-shaped hinge rod 521, and the lower part of the L-shaped hinge rod 521 is slidably connected to the surface of the cone head rod 518 through the hinge groove. The left end of the cone head rod 518 is fixedly connected with a retaining ring that matches the L-shaped hinge rod 521.

[0061] The upper part of the L-shaped hinge rod 521 is provided with a groove, and both sides of the inner wall of the groove are provided with adjustment grooves. The left end of the sealing rod 502 is symmetrically fixedly connected with an adjustment pin, and the two adjustment pins are respectively slidably connected inside the two adjustment grooves. It should be noted that when the sealing rod 502 moves to the right, the sealing rod 502 can lead the upper part of the L-shaped hinge rod 521 to deflect. When the lower part of the L-shaped hinge rod 521 deflects to the limit position, the lower part of the L-shaped hinge rod 521 presses against the retaining ring position and leads the cone head rod 518 to move to the left and release the seal with the gas pipe 508, so that the gas pipe 508 can regularly transport the processed steam inside the recovery tank 2.

[0062] Slide grooves are provided on both sides of the sealing rod 502, and sliders are symmetrically fixedly connected to the inner wall of the T-shaped sealing sleeve 501, and the two sliders are slidably connected to the inside of the two slide grooves. It should be noted that the sliders cooperate with the slide grooves so that the sealing rod 502 will not rotate with the limiting column 503 inside the T-shaped sealing sleeve 501, ensuring the stability of the cooperation between the limiting hole 504 and the limiting pin 506.

[0063] In this embodiment, Figures 1 to 13 As shown, the recovery switching mechanism 6 includes a rotating rod 601, which is rotatably connected to the middle position of the top of the support seat 1, and the lower part of the rotating rod 601 is fixedly connected with an arc plate 602, and the top of the arc plate 602 is symmetrically provided with an arc groove 603.

[0064] The top of the support seat 1 is fixedly connected with an electric telescopic rod 604, the movable end of the electric telescopic rod 604 is fixedly connected with an adjustment rack 605, and the lower part of the rotating rod 601 is movably installed with an adjustment gear 606 that matches the adjustment rack 605. It should be noted that: the lower part of the rotating rod 601 is fixedly sleeved with a one-way bearing, and the outer ring of the one-way bearing is fixedly connected with the inner ring of the adjustment gear 606, so that when the electric telescopic rod 604 is extended and moves with the adjustment rack 605, the adjustment rack 605 and the adjustment gear 606 are meshed and driven to rotate the rotating rod 601; and when the electric telescopic rod 604 moves with the adjustment rack 605 during the contraction process, the adjustment rack 605 and the adjustment gear 606 are meshed and will not rotate the rotating rod 601; and when the adjustment rack 605 and the adjustment gear 606 are meshed to the limit state, the adjustment gear 606 rotates one circle with the rotating rod 601.

[0065] The middle part of the rotating rod 601 is rotatably connected to a rectangular sleeve 607, and connecting blocks 608 are slidably connected to both sides of the rectangular sleeve 607. The two connecting blocks 608 correspond one to one to the two arc grooves 603. The bottom of the connecting block 608 is fixedly connected to a vertical pin 609, and the vertical pin 609 is slidably connected to the inside of the corresponding arc groove 603. A compression spring 610 is fixedly connected between the side wall of the connecting block 608 and the inner wall of the rectangular sleeve 607. It should be noted that: a connecting bearing is fixedly connected to the middle of the rectangular sleeve 607, and the inner ring of the connecting bearing is fixedly connected to the surface of the rotating rod 601, so that the rectangular sleeve 607 will not be rotated during the rotation of the rotating rod 601; rectangular grooves are provided on both sides of the rectangular sleeve 607, and the two connecting blocks 608 are respectively slidably connected inside the two rectangular grooves, and the compression spring 610 is arranged inside the rectangular grooves; when the arc plate 602 rotates clockwise, the arc groove 603 and the vertical pin 609 cooperate to slide, so that the two connecting blocks 608 move relative to each other, and after the arc plate 602 rotates one hundred and eighty degrees, the two connecting blocks 608 move relative to each other to the extreme position.

[0066] The two connecting blocks 608 are fixedly connected to the side away from the rectangular sleeve 607 with a mounting frame 611, and the side wall of the lower part of the recovery tank 2 and the side wall of the lower part of the treatment tank 3 are provided with a through slot 612. The two mounting frames 611 are respectively movably inserted into the inside of the two through slots 612, and the middle part of the mounting frame 611 is fixedly connected with a molecular sieve adsorption cylinder 613, and the molecular sieve adsorption cylinder 613 on the left side overlaps the side wall of the arc-shaped heat conducting plate 12. It should be noted that the molecular sieve adsorption cylinder 613 can adsorb methanol in the steam, and the vaporization temperature of methanol is 64.7 degrees. When the molecular sieve is heated by the arc-shaped heat conducting plate 12, the methanol can be quickly dispersed for recovery and treatment. The molecular sieve adsorption cylinder 613 here is a prior art and will not be described in detail.

[0067] A positioning rod 614 is fixedly connected to the top of the connecting block 608, and a turntable 615 is rotatably connected to the bottom of the supporting plate 4. A transverse groove 616 is symmetrically provided at the bottom of the turntable 615. The upper parts of the two positioning rods 614 are respectively slidably connected to the inside of the two transverse grooves 616. A movable groove 617 is symmetrically provided inside the turntable 615. The two movable grooves 617 correspond one-to-one to the two transverse grooves 616. Both sides of the inner wall of the movable groove 617 are slidably connected with Y-shaped hinged rods 618. An insertion rod 619 is hinged between the opposite ends of the two Y-shaped hinged rods 618. Plug holes 620 are symmetrically provided at the bottom of the supporting plate 4. The two plug holes 620 correspond one-to-one to the two movable grooves 617. The lower plug rod 619 extends to the inside of the transverse groove 616, and the upper plug rod 619 passes through the movable groove 617 and is movably inserted into the inside of the corresponding plug hole 620. It should be noted that: a connecting bearing is fixedly connected between the bottom of the support plate 4 and the top of the turntable 615 to ensure that the turntable 615 rotates stably at the bottom of the support plate 4; when the turntable 615 is in a locked state, the rectangular sleeve 607 will not rotate on the surface of the turnbar 601 during the sliding process of the positioning rod 614 and the transverse groove 616 of the turntable 615; when the insertion rod 619 inside the transverse groove 616 is pressed by the positioning rod 614, under the action of the diamond structure, the insertion rod 619 on the upper part of the two Y-shaped hinge rods 618 moves downward, so that the turntable 615 is unlocked, and at this time, the vertical pin 609 at the bottom of the connecting block 608 also slides to the extreme position inside the arc groove 603, and the arc plate 602 that continues to rotate synchronously rotates 180 degrees with the connecting block 608, the rectangular sleeve 607, the positioning rod 614 and the turntable 615 through the vertical pin 609, so that the two molecular sieve adsorption cylinders 613 on the rectangular sleeve 607 that have moved relatively can switch positions.

[0068] In this embodiment, Figures 1 to 13 As shown, the inner wall of the movable groove 617 is symmetrically provided with cylindrical grooves, and two Y-shaped hinge rods 618 are respectively slidably connected inside the two cylindrical grooves, and a return spring is movably connected between the surface of the Y-shaped hinge rod 618 and the inner wall of the movable groove 617.

[0069] The top and bottom of the inner wall of the movable groove 617 are both provided with round holes, and two insertion rods 619 are respectively movably inserted into the inside of the two round holes. The upper part of the positioning rod 614 is provided with an inclined surface that matches the corresponding insertion rod 619.

[0070] In this embodiment, Figures 1 to 13 As shown, the upper and lower parts of the inner wall of the treatment tank 3 are fixedly connected with conical guide cylinders, and the two conical guide cylinders are respectively overlapped with the top plate and the bottom of the corresponding molecular sieve adsorption cylinder 613. It should be noted that: the steam entering the interior of the treatment tank 3 enters the interior of the molecular sieve adsorption cylinder 613 from the position of the conical guide cylinder, and the molecular sieve adsorption cylinder 613 extracts methanol.

[0071] In this embodiment, Figures 1 to 13 As shown, a method for using a methanol vapor efficient recovery device comprises the following steps:

[0072] S1. When in use, methanol vapor is transported to the inside of the recovery tank 2 through the steam pipe 14, and at the same time, the coolant in the coolant tank 7 is transported to the inside of the spiral infusion pipe 8, so that the coolant cools and liquefies the methanol vapor in the recovery tank 2 during the internal transportation process of the spiral infusion pipe 8, and the liquefied methanol is discharged from the liquid collecting cone sleeve 10 and the drain pipe 11 for collection;

[0073] S2. As more steam is transported by the steam pipe 14, the air pressure inside the recovery tank 2 increases. At this time, the air pressure causes the sealing rod 502 to slide to the right inside the T-shaped sealing sleeve 501. When the sealing rod 502 slides to the position of the limiting pin 506 with the limiting column 503, the limiting hole 504 on the limiting column 503 cooperates with the limiting pin 506 to limit the sealing rod 502. In this process, the movement of the sealing rod 502 causes the hinged L-shaped hinge rod 521 to deflect, causing the lower part of the L-shaped hinge rod 521 to deflect and press the cone head rod 518 to move to the left, so that the cone head rod 518 releases the seal on the left end of the gas pipe 508, allowing the waste steam after the methanol liquefaction inside the recovery tank 2 to enter the inside of the gas pipe 508, and then the eccentric fan blade 510 inside the gas pipe 508 rotates. Waste steam is transported, and at the same time, the shaft 509 on the eccentric fan blade 510 brings the small gear 511 to mesh with the large gear 512, so that the large gear 512 is meshed with the corresponding transmission rack 517, and the transmission rack 517 brings the U-shaped bracket 514 and the guide block 516 to slowly move to the right. When the guide block 516 contacts the guide rod 507 at the lower part of the limit pin 506, the guide rod 507 brings the limit pin 506 to move downward and releases the connection with the limit hole 504. At this time, the sealing rod 502 is reset and brings the L-shaped hinge rod 521 and the cone head rod 518 to reset and seal the position of the gas pipe 508 again, so that the waste steam can be regularly transported to the position of the treatment tank 3, and in the process of regularly discharging the waste steam, the methanol steam can be heat-exchanged with the coolant inside the spiral infusion pipe 8 for a long time;

[0074] S3. After the waste steam enters the treatment tank 3 from the position of the gas pipe 508, the waste steam passes through the position of the molecular sieve adsorption cylinder 613 inside the treatment tank 3, and the molecular sieve adsorption cylinder 613 adsorbs the methanol remaining in the waste steam. When the gas pipe 508 stops conveying the waste steam, the electric telescopic rod 604 is started to engage the adjustment rack 605 with the adjustment gear 606, so that the adjustment rack 605 rotates clockwise with the rotating rod 601 and the arc plate 602. During the rotation of the arc plate 602, the arc groove on the top of the arc plate 602 603 cooperates with the vertical pin 609 at the bottom of the connecting block 608 to slide, so that the connecting block 608 slides along the track in the middle of the rectangular sleeve 607, and then the two connecting blocks 608 move relatively with the corresponding molecular sieve adsorption cartridges 613 through the mounting frame 611, so that the two molecular sieve adsorption cartridges 613 are respectively moved out from the corresponding recovery tank 2 and the processing tank 3. In this process, the movement of the connecting block 608 drives the top positioning rod 614 to translate inside the turntable 615. When the positioning rod 614 presses against the end position of the insertion rod 619 inside the transverse groove 616, the movable groove 617 The plug rod 619 at the lower position moves upward, and with the cooperation of the two Y-shaped hinge rods 618, the plug rod 619 at the upper position of the movable groove 617 moves downward to release the plugging connection with the bottom plug hole 620 of the support plate 4. At this time, the connecting block 608, the vertical pin 609 and the positioning rod 614 are all moved to the limit position, and the rotating rod 601 that continues to rotate with the adjusting gear 606 rotates synchronously with the vertical pin, the connecting block 608 and the positioning rod 614 through the arc plate 602, so that the rectangular sleeve 607 between the two connecting blocks 608 rotates 180 degrees with the two molecular sieve adsorption cylinders 613 , the positions of the two molecular sieve adsorption cylinders 613 are switched, and finally, when the electric telescopic rod 604 brings the adjustment rack 605 to reset and release the meshing with the adjustment gear 606, the compression spring 610 elastically recovers and brings the connecting block 608 to reset and move, and the two connecting blocks 608 move in opposite directions, so that the two molecular sieve adsorption cylinders 613 are inserted into the inside of the recovery tank 2 and the treatment tank 3 respectively, and at the same time, the Y-shaped hinged rod 618 brings the insertion rod 619 to reset and move, so that the insertion rod 619 on the upper part of the movable groove 617 is inserted into the corresponding socket 620 to limit the turntable 615;

[0075] S4. During the heat exchange process of the coolant inside the spiral infusion tube 8, the discharged coolant is heated and transported to the position of the arc-shaped heat-conducting plate 12, and the heated arc-shaped heat-conducting plate 12 heats the molecular sieve adsorption cylinder 613 at the lower position of the processing tank 3, so that a small amount of methanol adsorbed inside the molecular sieve adsorption cylinder 613 is heated and vaporized and separated, and the separated methanol flows back from the bottom of the recovery tank 2 into the steam pipe 14 for secondary recovery treatment.

[0076] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A methanol vapor efficient recovery device, comprising a support base, characterized in that: A recovery tank is fixedly connected to the left side of the support seat, a processing tank is fixedly connected to the right side of the support seat, a support plate is fixedly connected between the right side of the recovery tank and the left side of the processing tank, and an exhaust mechanism is fixedly connected between the upper part of the inner wall of the recovery tank and the top of the processing tank; A recovery switching mechanism is movably connected between the lower part of the recovery tank and the lower part of the processing tank, and the middle part of the recovery switching mechanism is movably connected to the bottom of the support plate; The left side of the outer wall of the recovery tank is fixedly connected with a coolant tank, the top of the coolant tank is fixedly connected with a spiral infusion tube, the spiral infusion tube is arranged inside the recovery tank, the middle part of the inner wall of the recovery tank is fixedly connected with an isolation plate, the top of the isolation plate is provided with a liquid collecting cone sleeve, the bottom of the liquid collecting cone sleeve is fixedly connected with a drain pipe, one end of the drain pipe extends to the outside of the recovery tank, one end of the spiral infusion tube passes through the liquid collecting cone sleeve and the isolation plate and is fixedly connected with an arc-shaped heat conducting plate matched with the recovery switching mechanism, the side wall of the arc-shaped heat conducting plate is fixedly connected to the inner wall of the recovery tank, the bottom of the arc-shaped heat conducting plate is fixedly connected with a coolant return pipe, one end of the coolant return pipe passes through the recovery tank and is fixedly connected to the bottom of the coolant tank; A steam pipe is fixedly connected to the upper part of the left side of the recovery tank, an exhaust gas discharge pipe is fixedly connected to the bottom of the treatment tank, and a return air pipe is fixedly connected between the bottom of the recovery tank and the surface of the steam pipe; The exhaust mechanism comprises a T-shaped sealing sleeve, which is fixedly connected to the upper part of the right side of the recovery tank, and a sealing rod is slidably connected inside the T-shaped sealing sleeve; An air supply pipe is fixedly connected to the middle of the right side of the recovery tank, and the right end of the air supply pipe is fixedly connected to the top of the processing tank; The left end of the gas pipe is overlapped with a cone head rod, the left end of the cone head rod is slidably connected to a T-shaped rod, the surface of the T-shaped rod is fixedly connected to the inner wall of the recovery tank, a sealing spring is movably connected between the middle part of the T-shaped rod and the left end of the cone head rod, an L-shaped hinged rod is hinged on the right side of the inner wall of the recovery tank, the lower part of the L-shaped hinged rod is slidably connected to the surface of the cone head rod, and the upper part of the L-shaped hinged rod is hinged to the left end of the sealing rod.

2. A methanol vapor efficient recovery device according to claim 1, characterized in that: The right side of the sealing rod is fixedly connected to a limiting column, a limiting hole is provided at the bottom of the limiting column, an extrusion spring is fixedly connected between the right side of the limiting column and the right side of the inner wall of the T-shaped sealing sleeve, a limiting pin matching the limiting hole is vertically slidably connected to the bottom of the T-shaped sealing sleeve, and the bottom of the limiting pin passes through the T-shaped sealing sleeve and is fixedly connected to a guide rod; The left side of the air pipe is rotatably connected to an axis rod, and an eccentric fan blade is fixedly connected to the middle part of the axis rod. Both ends of the axis rod pass through the air pipe and are fixedly connected to small gears. The front and rear sides of the air pipe are rotatably connected to large gears, and the two large gears correspond to the two small gears one by one, and the top of the small gear is meshed with the bottom of the corresponding large gear. The right side of the recovery tank is symmetrically fixedly connected to a sliding rod, and the sliding rod is arranged between the T-shaped sealing sleeve and the air pipe. A U-shaped bracket is slidably connected between the two sliding rods, and a return spring is movably sleeved on the surface of the sliding rod. The top of the U-shaped bracket is symmetrically fixedly connected with a guide block matching the guide rod, and the bottom of the U-shaped bracket is symmetrically fixedly connected with a transmission rack, and the two transmission racks correspond to the two large gears one by one, and the bottom of the transmission rack is meshed with the top of the corresponding large gear.

3. A methanol vapor efficient recovery device according to claim 2, characterized in that: A vertical hole is provided at the bottom of the right side of the T-shaped sealing sleeve, the limit pin is vertically slidably connected inside the vertical hole, a short spring is movably sleeved on the upper part of the limit pin, and a chamfer matching the limit pin is provided on the right side of the limit column.

4. A methanol vapor efficient recovery device according to claim 3, characterized in that: The top of the U-shaped bracket is symmetrically fixedly connected with an L-shaped connecting rod, and the two guide blocks are respectively fixedly connected to the ends of the two L-shaped connecting rods, and the guide blocks are set as trapezoidal blocks.

5. A methanol vapor efficient recovery device according to claim 4, characterized in that: A hinge block is hinged in the middle of the L-shaped hinge rod, and the end of the hinge block is fixedly connected to the inner wall of the recovery tank; A waist-shaped groove is provided at the lower part of the L-shaped hinge rod, and the lower part of the L-shaped hinge rod is slidably connected to the surface of the cone head rod through the hinge groove, and a retaining ring matching the L-shaped hinge rod is fixedly connected to the left end of the cone head rod; A groove is provided on the upper part of the L-shaped hinge rod, and adjustment grooves are provided on both sides of the inner wall of the groove. An adjustment pin is symmetrically fixedly connected to the left end of the sealing rod, and the two adjustment pins are respectively slidably connected to the inside of the two adjustment grooves; Slide grooves are provided on both sides of the sealing rod, and sliding blocks are symmetrically fixedly connected to the inner wall of the T-shaped sealing sleeve. The two sliding blocks are respectively slidably connected inside the two slide grooves.

6. A methanol vapor efficient recovery device according to claim 5, characterized in that: The recycling switching mechanism includes a rotating rod, which is rotatably connected to the middle position of the top of the support seat, and the lower part of the rotating rod is fixedly connected to an arc plate, and the top of the arc plate is symmetrically provided with arc grooves; The top of the support seat is fixedly connected with an electric telescopic rod, the movable end of the electric telescopic rod is fixedly connected with an adjustment rack, and the lower part of the rotating rod is movably installed with an adjustment gear matched with the adjustment rack; The middle part of the rotating rod is rotatably connected with a rectangular sleeve, and both sides of the rectangular sleeve are slidably connected with connecting blocks, and the two connecting blocks correspond to the two arc-shaped grooves one by one. The bottom of the connecting block is fixedly connected with a vertical pin, and the vertical pin is slidably connected to the inside of the corresponding arc-shaped groove. A compression spring is fixedly connected between the side wall of the connecting block and the inner wall of the rectangular sleeve; The two connecting blocks are fixedly connected to a mounting frame on one side away from the rectangular sleeve, and the side wall of the lower part of the recovery tank and the side wall of the lower part of the treatment tank are both provided with through grooves, and the two mounting frames are movably plugged into the inside of the two through grooves respectively, and a molecular sieve adsorption cylinder is fixedly connected to the middle part of the mounting frame, and the molecular sieve adsorption cylinder on the left side overlaps the side wall of the arc-shaped heat conducting plate; A positioning rod is fixedly connected to the top of the connecting block, and a turntable is rotatably connected to the bottom of the support plate. The bottom of the turntable is symmetrically provided with transverse grooves, and the upper parts of the two positioning rods are respectively slidably connected to the inside of the two transverse grooves, and movable grooves are symmetrically provided inside the turntable, and the two movable grooves correspond to the two transverse grooves one by one. Both sides of the inner wall of the movable groove are slidably connected with Y-shaped hinged rods, and an insertion rod is hinged between the opposite ends of the two Y-shaped hinged rods, and the bottom of the support plate is symmetrically provided with insertion holes, and the two insertion holes correspond to the two movable grooves one by one. The lower insertion rod extends to the inside of the transverse groove, and the upper insertion rod passes through the movable groove and is movably inserted into the inside of the corresponding insertion hole.

7. A methanol vapor efficient recovery device according to claim 6, characterized in that: The inner wall of the movable groove is symmetrically provided with cylindrical grooves, the two Y-shaped hinged rods are respectively slidably connected inside the two cylindrical grooves, and a return spring is movably connected between the surface of the Y-shaped hinged rod and the inner wall of the movable groove; The top and bottom of the inner wall of the movable groove are both provided with round holes, the two insertion rods are respectively and movably inserted in the two round holes, and the upper part of the positioning rod is provided with an inclined surface matching with the corresponding insertion rod.

8. A methanol vapor efficient recovery device according to claim 7, characterized in that: The upper and lower parts of the inner wall of the treatment tank are fixedly connected with conical guide cylinders, and the two conical guide cylinders are overlapped with the top plate and the bottom of the corresponding molecular sieve adsorption cylinder respectively.

9. A method for using a methanol vapor efficient recovery device, characterized in that: Using a methanol vapor efficient recovery device as described in any one of claims 1 to 8 comprises the following steps: S1. When in use, methanol vapor is transported to the inside of the recovery tank through the steam pipe, and at the same time, the coolant in the coolant tank is transported to the inside of the spiral infusion pipe, so that the coolant cools and liquefies the methanol vapor in the recovery tank during the internal transportation process of the spiral infusion pipe, and the liquefied methanol is discharged from the liquid collecting cone sleeve and the drain pipe for collection; S2. As more steam is transported by the steam pipe, the air pressure inside the recovery tank increases. At this time, the air pressure drives the sealing rod to slide to the right inside the T-shaped sealing sleeve. When the sealing rod drives the limiting column to slide to the limiting pin position, the limiting hole on the limiting column cooperates with the limiting pin to limit the sealing rod. In this process, the movement of the sealing rod drives the hinged L-shaped hinged rod to deflect, so that the lower part of the L-shaped hinged rod deflects and presses the cone head rod to move to the left, so that the cone head rod releases the seal on the left end of the gas pipeline, allowing the waste steam after the methanol liquefaction in the recovery tank to enter the gas pipeline, and then the eccentric fan blades inside the gas pipeline rotate. The waste steam is transported automatically, and at the same time, the shaft rod on the eccentric fan blade meshes with the small gear and the large gear, so that the large gear meshes with the corresponding transmission rack, and the transmission rack brings the U-shaped bracket and the guide block to slowly move to the right. When the guide block contacts the guide rod at the lower part of the limit pin, the guide rod moves down with the limit pin and releases the plugging with the limit hole. At this time, the sealing rod resets and brings the L-shaped hinge rod and the cone head rod to reset and seal the gas transmission pipe position again, so that the waste steam can be regularly transported to the treatment tank position, and in the process of regularly discharging the waste steam, the methanol steam can be heat-exchanged with the coolant inside the spiral infusion pipe for a long time; S3. After the waste steam enters the treatment tank from the gas pipeline, the waste steam passes through the molecular sieve adsorption cylinder inside the treatment tank, and the molecular sieve adsorption cylinder adsorbs the methanol remaining in the waste steam. When the gas pipeline stops transporting the waste steam, the electric telescopic rod is started to engage the adjusting rack with the adjusting gear, so that the adjusting rack drives the rotating rod and the arc plate to rotate clockwise. During the rotation of the arc plate, the arc groove at the top of the arc plate cooperates with the vertical pin at the bottom of the connecting block to slide, so that the connecting block slides along the track in the middle of the rectangular sleeve. Then, the two connecting blocks move relative to each other with the corresponding molecular sieve adsorption cylinders through the mounting frame, so that the two molecular sieve adsorption cylinders are respectively moved out from the corresponding recovery tank and the treatment tank. In this process, the movement of the connecting block drives the top positioning rod to translate inside the turntable. When the positioning rod is pressed against the end position of the plug rod inside the horizontal groove, The plug rod at the lower position of the movable groove moves upward, and with the cooperation of the two Y-shaped hinged rods, the plug rod at the upper position of the movable groove moves downward to release the plugging with the bottom socket of the support plate. At this time, the connecting block, the vertical pin and the positioning rod all move to the limit position, and the rotating rod that continues to rotate with the adjusting gear drives the vertical pin, the connecting block and the positioning rod to rotate synchronously through the arc plate, so that the rectangular sleeve between the two connecting blocks drives the two molecular sieve adsorption cylinders to rotate 180 degrees, and the positions of the two molecular sieve adsorption cylinders are switched. Finally, when the electric telescopic rod drives the adjusting rack to reset and release the meshing with the adjusting gear, the compression spring elastically recovers and drives the connecting block to reset and move, and the two connecting blocks move back to back, so that the two molecular sieve adsorption cylinders are inserted into the inside of the recovery tank and the treatment tank respectively, and at the same time, the Y-shaped hinged rod drives the plug rod to reset and move, so that the plug rod at the upper part of the movable groove is inserted into the corresponding socket to limit the turntable; S4. During the heat exchange process of the coolant inside the spiral infusion tube, the discharged coolant is heated and transported to the position of the arc-shaped heat transfer plate, and the heated arc-shaped heat transfer plate heats the molecular sieve adsorption cylinder at the lower position of the treatment tank, so that a small amount of methanol adsorbed inside the molecular sieve adsorption cylinder is heated and vaporized and separated. The separated methanol flows back into the steam pipe from the bottom of the recovery tank for secondary recovery treatment.

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