A sodium hydrosulfide liquid recovery and processing equipment

Abstract

The invention discloses a sodium hydrosulfide liquid recovery and processing device, and specifically relates to the technical field of sodium hydrosulfide recovery. The device comprises a recovery tank and a sealing cover installed on the top thereof, wherein a partition plate is fixedly arranged on the inner wall of the recovery tank. The device changes the flow direction of gas by regulating components, namely, the gas discharged through a first inflation pipe can firstly perform auxiliary drying on sodium hydrosulfide crystals, and blows the high-temperature gas inside a reaction tank into an exhaust pipe to discharge the reaction tank, thereby preventing the high-temperature gas remaining inside the reaction tank from being discharged into the atmosphere to pollute the environment, and further dries the sodium hydrosulfide crystals through the gas discharged through a second inflation pipe, thereby improving the recovery quality of the sodium hydrosulfide and avoiding subsequent drying steps. Meanwhile, the dried sodium hydrosulfide crystals are directly discharged through a discharge pipe, thereby reducing the discharge steps, thereby jointly improving the recovery efficiency of the sodium hydrosulfide crystals.

Description

Technical Field

[0001] The invention relates to the technical field of sodium hydrosulfide recovery, and more specifically to sodium hydrosulfide liquid recovery and processing equipment. Background Art

[0002] Sodium hydrosulfide is commonly used in the synthesis of organic intermediates, the preparation of sulfur dye auxiliaries, etc. It is an important raw material for chemical semi-finished products. After the sodium hydrosulfide liquid is synthesized, it needs to be recovered in order to obtain industrial products. However, during the recovery process of traditional sodium hydrosulfide liquid, some impurity gases are easily generated. If it is directly discharged to the external environment, it will pollute the air, and a large amount of sodium hydrosulfide crystals will also remain, and the sodium hydrosulfide crystals cannot be completely taken out from the recovery equipment;

[0003] According to the patent document with publication number CN215208485U, the device prevents the impurity gas from being released into the external environment and polluting the air through the designed structure, and scrapes off the solid particles on the side wall of the inner cavity of the reaction tank by contacting the wiping ring with the inner cavity of the reaction tank, and also facilitates the removal of sodium hydrosulfide solid by setting a collecting plate;

[0004] However, in the above patent document, only the high temperature gas generated is discharged through the exhaust pipe, and a small amount of gas still remains in the reaction tank and is not easy to be discharged. When the sealing cover is opened, it overflows and pollutes the air, reducing the safety of the device when in use;

[0005] At the same time, since sodium hydrosulfide has strong hygroscopicity, drying is a very necessary operation to ensure the purity and quality of the product after recovery. In addition, when discharging sodium hydrosulfide solid, the sealing cover needs to be opened first, and then the solid is taken out from the collecting plate. The discharging process is not streamlined enough, and the sodium hydrosulfide crystals cannot be quickly discharged. In addition, the drying process cannot be completed synchronously during discharging, so as to improve the recovery quality of sodium hydrosulfide, reduce the discharging steps, and jointly improve the recovery efficiency of sodium hydrosulfide crystals.

[0006] In view of the above technical defects, a solution is now provided. Summary of the invention

[0007] In order to overcome the above-mentioned defects of the prior art, the present invention provides a sodium hydrosulfide liquid recovery and processing equipment to solve the technical problems raised by the background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: a sodium hydrosulfide liquid recovery and processing device, comprising a recovery tank and a sealing cover installed on the top thereof, a partition plate is fixedly arranged on the inner wall of the recovery tank, four groups of reaction tanks are inserted above the partition plate, and a drying mechanism for drying sodium hydrosulfide crystals is arranged below the partition plate;

[0009] The drying mechanism comprises a driving shaft, a plurality of connecting rods are fixedly arranged on the top of the driving shaft, an annular rotating disk is commonly arranged on the outer sides of the plurality of connecting rods, and the bottom of the reaction tank is in contact with the annular rotating disk;

[0010] The outer side of the annular turntable is provided with a regulating component for regulating the gas flow direction, the regulating component includes four gas-filling tubes 1 opened inside the annular turntable, and a mesh plate is provided at the output end of the gas-filling tube 1, and four discharge pipes are also opened inside the annular turntable;

[0011] An inflation component for conveying gas into the reaction tank is arranged outside the regulating component. The inflation component comprises an air pump fixedly connected to the outer wall of the recovery tank, and an annular tube is connected to the output end of the air pump.

[0012] Furthermore, the output end of the discharge pipe is connected to a buffer pipe, three groups of annular air pipes are arranged on the outer wall of the buffer pipe, the output end of the annular air pipe is connected to a plurality of blowing pipes, and the output end of the blowing pipe extends into the buffer pipe and is arranged obliquely upward.

[0013] Furthermore, the outer sides of the three groups of annular air pipes are connected to an inflatable plate 2, an inflatable pipe 2 is provided at the input end of the inflatable plate 2, and two adjacent inflatable plates 2 are fixedly connected via a shielding ring.

[0014] Furthermore, the output end of the annular tube is connected to four air inlet pipes, and the input end of the air inlet pipe extends into the recovery tank and is connected to an inflation plate 1.

[0015] Furthermore, an upper through pipe is opened above the inflatable plate 1, and a lower through pipe is opened below the inflatable plate 1, and input ends of the upper through pipe and the lower through pipe are both connected to the air inlet pipe.

[0016] Furthermore, the output end of the upper pipe and the input end of the inflation tube one are located on the same horizontal plane, the output end of the lower pipe and the input end of the inflation tube two are located on the same horizontal plane, and the inner wall of the inflation plate one is respectively in contact with the outer wall of the shielding ring, the outer wall of the inflation plate two and the outer wall of the annular turntable.

[0017] Furthermore, four sealing rings are arranged on the bottom wall above the sealing cover, a sealing plate is arranged on the bottom wall below the sealing cover, the top of the reaction tank passes through the sealing plate, and the top of the reaction tank is located directly below the sealing rings.

[0018] Furthermore, a blocking ring is arranged on the top side wall of the reaction tank, the bottom wall of the sealing plate is in contact with the blocking ring, and a feeding pipe is arranged at the bottom of the recovery tank.

[0019] Furthermore, the feeding and exhaust mechanism includes a feeding pipe inserted above the sealing cover, the input end of the feeding pipe is located in the sealing ring, and the input ends of the four feeding pipes are commonly connected to a feeding main pipe.

[0020] Furthermore, an exhaust pipe is inserted on the outer wall of the sealing cover above the sealing ring, and the output ends of the four exhaust pipes are commonly connected to an exhaust main pipe. Control valves are provided on the outer walls of the exhaust pipes and the feeding pipe.

[0021] Technical effects and advantages of the present invention:

[0022] The present invention controls the rotation of a driving shaft through a motor to rotate the annular turntable, and connects the input end of the inflation tube one with the input end of the upper pipeline, and starts the air pump so that the gas first enters the inflation tube one through the annular tube, the air inlet pipe and the upper pipeline, and the gas output by the inflation tube one first passes through a mesh plate, then enters the reaction tank, and is discharged through an exhaust pipe. During the whole process, the external gas first dries a small amount of water in the sodium hydrosulfide crystals, and during the blowing process, the sodium hydrosulfide crystals are shaken to assist drying, and the high-temperature gas inside the reaction tank is blown into the exhaust pipe to be discharged from the reaction tank, so that the high-temperature gas remaining in the reaction tank is avoided to be directly discharged into the atmosphere after the sealing cover is opened to pollute the environment, thereby improving the safety of the device when in use.

[0023] The invention controls the rotation of a driving shaft so that the input end of the second inflation pipe is connected with the output end of the down-passing pipe, the shielding ring seals the down-passing pipe all the time, and the buffer pipe is connected with the output end of the reaction tank, and the sodium hydrosulfide crystals are discharged through the buffer pipe. Meanwhile, the external gas sequentially enters the second inflation plate and the annular gas transmission pipe, and is finally discharged through the blowing pipe. The upward wind speed reduces the feeding speed of the sodium hydrosulfide crystals, further dries the sodium hydrosulfide crystals, improves the recovery quality of the sodium hydrosulfide, and avoids the subsequent drying steps. Meanwhile, the dried sodium hydrosulfide crystals are directly discharged through the feeding pipe, and do not need to be taken out from the gathering plate of the reaction tank for recovery, thereby reducing the feeding steps and jointly improving the recovery efficiency of the sodium hydrosulfide crystals.

[0024] The invention is that the reaction tank can be directly taken out by opening the sealing cover, so that the sodium hydrosulfide crystals accumulated on the inner wall of the reaction tank can be scraped off and the reaction tank can be cleaned, thereby improving the convenience of the invention when used. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional appearance diagram of the present invention.

[0026] Figure 2 It is a stereoscopic diagram of the overall structure of the present invention.

[0027] Figure 3 It is a three-dimensional diagram of the drying mechanism in the present invention.

[0028] Figure 4 It is a three-dimensional diagram of the regulating component in the present invention.

[0029] Figure 5 It is an enlarged view of the local structure of the inflatable component in the present invention.

[0030] Figure 6 It is a front view of the internal structure of the buffer tube in the present invention.

[0031] Figure 7 It is a three-dimensional diagram of the feeding and exhaust mechanism in the present invention.

[0032] The accompanying drawings are marked as follows: 1. recovery tank; 2. sealing cover; 3. feeding and exhaust mechanism; 31. exhaust pipe; 32. feeding pipe; 33. feeding main pipe; 34. exhaust main pipe; 4. reaction tank; 41. blocking ring; 42. sealing ring; 43. sealing plate; 5. partition plate; 6. annular turntable; 7. drying mechanism; 71. air pump; 72. annular pipe; 731. air inlet pipe; 732. inflation plate one; 733. upper pipeline; 734. lower pipeline; 741. inflation pipe one; 742. discharge pipe; 743. buffer pipe; 744. inflation plate two; 745. inflation pipe two; 746. annular air pipe; 747. shielding ring; 748. air blowing pipe; 75. connecting rod; 76. driving shaft; 8. discharge pipe. DETAILED DESCRIPTION

[0033] 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 technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1: Figure 1-7 As shown, a sodium hydrosulfide liquid recovery and processing device proposed in this embodiment includes a recovery tank 1 and a sealing cover 2 installed on the top thereof, a feed pipe 8 is provided at the bottom of the recovery tank 1, and a discharge control valve for controlling the discharge of sodium hydrosulfide crystals is provided on the outer wall of the feed pipe 8;

[0035] A partition plate 5 is fixedly arranged on the inner wall of the recovery tank 1, and four groups of reaction tanks 4 are inserted above the partition plate 5. A reaction zone and a drying zone are respectively formed between the partition plate 5 and the inner wall of the recovery tank 1 from top to bottom, and a drying mechanism 7 for drying sodium hydrosulfide crystals is arranged inside the drying zone;

[0036] It should be noted that the reaction zone is provided with a heating device for heating the reaction tank 4, which only needs to have a heating function for the reaction tank 4, and belongs to the prior art, and will not be described in detail here;

[0037] A sealing ring is provided at the bottom of the reaction tank 4 to ensure the sealing inside the reaction tank 4. The sealing ring is made of a high-temperature resistant rubber ring, and lubricating oil is added to the outside of the rubber ring to reduce friction. When the reaction tank 4 is taken out, lubricating oil can be added to the bottom of the reaction tank 4 regularly.

[0038] The sealing cover 2 is connected to the recovery tank 1 by a hinged manner, plays a sealing role and facilitates the subsequent opening and closing, which belongs to the prior art and will not be described in detail here;

[0039] like Figure 1-6 As shown, the drying mechanism 7 includes a driving shaft 76, a motor is provided at the bottom of the driving shaft 76, and the motor is connected to the recovery tank 1, a plurality of connecting rods 75 are fixedly provided at the top of the driving shaft 76, and an annular turntable 6 is commonly provided on the outer sides of the plurality of connecting rods 75, and the bottom of the reaction tank 4 is in contact with the annular turntable 6;

[0040] like Figure 1-4 As shown in Figure 6, a regulating component for regulating the gas flow direction is arranged on the outer side of the annular turntable 6, and the regulating component includes four gas-filling tubes 741 opened inside the annular turntable 6, and the four gas-filling tubes 741 are evenly distributed on the annular turntable 6, and the input end of the gas-filling tube 741 is located on the circumferential side wall of the annular turntable 6, and the output end of the gas-filling tube 741 is located on the top wall of the annular turntable 6, and a mesh plate is arranged at the output end of the gas-filling tube 741, and four discharge pipes 742 are also opened inside the annular turntable 6, and the four discharge pipes 742 are evenly distributed on the annular turntable 6;

[0041] The output end of the discharge pipe 742 is connected to a buffer pipe 743, and three groups of annular air pipes 746 are arranged on the outer wall of the buffer pipe 743. The output end of the annular air pipe 746 is connected to a plurality of blowing pipes 748. The output end of the blowing pipe 748 extends into the buffer pipe 743 and is arranged obliquely upward. The plurality of blowing pipes 748 are arranged in a circular row relative to the center line of the annular air pipe 746. The outer sides of the three groups of annular air pipes 746 are connected to an inflation plate 2 744, and the inflation plate 2 744 is connected to the inside of the three groups of annular air pipes 746. An inflation pipe 2 745 is provided at the input end of the inflation plate 2 744; two adjacent inflation plates 2 744 are fixedly connected by a shielding ring 747;

[0042] After the high-temperature gas in the reaction tank 4 is discharged, the driving shaft 76 is continuously controlled to rotate, so that the input end of the second gas-filling pipe 745 is connected to the output end of the down-conducting pipe 734, the shielding ring 747 keeps sealing the down-conducting pipe 734, and the buffer pipe 743 is connected to the output end of the reaction tank 4, and the sodium hydrosulfide crystals are discharged through the buffer pipe 743;

[0043] At the same time, the external air enters the second inflation plate 744 and the annular air delivery pipe 746 in sequence, and is finally discharged through the blowing pipe 748. The upward wind speed reduces the feeding speed of the sodium hydrosulfide crystals, and further dries the sodium hydrosulfide crystals, improves the recovery quality of the sodium hydrosulfide, and avoids the subsequent drying steps. At the same time, the dried sodium hydrosulfide crystals are directly discharged through the feeding pipe 8, reducing the feeding steps, thereby jointly improving the recovery efficiency of the sodium hydrosulfide crystals;

[0044] like Figure 1-5 As shown, an air filling assembly for conveying gas into the reaction tank 4 is arranged on the outside of the regulating assembly, and the air filling assembly includes an air pump 71 fixedly connected to the outer wall of the recovery tank 1, and the output end of the air pump 71 is connected to an annular tube 72, and the output end of the annular tube 72 is connected to four air inlet pipes 731, and the input end of the air inlet pipe 731 extends into the drying area and is connected to an air filling plate 732, and an upper through pipe 733 is provided above the air filling plate 732, and a lower through pipe 734 is provided below the air filling plate 732, and the input ends of the upper through pipe 733 and the lower through pipe 734 are both connected to the air inlet pipe 731;

[0045] It should be noted that the air pump 71 is a prior art that can be used to transport gas. It can be an IQ type centrifugal pump or a screw pump, etc., and no further explanation is given here.

[0046] The output end of the upper pipe 733 and the input end of the gas-filled pipe 1 741 are located on the same horizontal plane, the output end of the lower pipe 734 and the input end of the gas-filled pipe 2 745 are located on the same horizontal plane, and the inner wall of the gas-filled plate 1 732 fits the outer wall of the shielding ring 747, the outer wall of the gas-filled plate 2 744 and the outer wall of the annular turntable 6 respectively;

[0047] The gas first enters the air inlet pipe 731 through the annular pipe 72, and then enters the gas charging pipe 741 through the upper pipe 733. The gas output from the gas charging pipe 741 first passes through the mesh plate, and then enters the reaction tank 4, and is discharged through the exhaust pipe 31. During the whole process, the external gas first dries the small amount of water in the sodium hydrosulfide crystals, and blows the high-temperature gas inside the reaction tank 4 into the exhaust pipe 31 to discharge the reaction tank 4, so as to avoid the residual high-temperature gas inside the reaction tank 4 from polluting the environment.

[0048] It should be noted here that the inner surface of the inflation plate 732 and the outer surface of the annular turntable 6 are polished so that the friction generated during the rotational cooperation between the two can be ignored. Secondly, when the upper pipe 733 is connected to the inflation pipe 741, a small amount of gas will leak out and be discharged through the discharge pipe 8, which will not affect the large amount of external air entering the interior of the reaction tank 4, so that the small amount of gas leaked out will not affect the drying treatment of the sodium hydrosulfide crystals.

[0049] Embodiment 2: Figure 7 As shown, a sodium hydrosulfide liquid recovery and processing device proposed in this embodiment is improved on the basis of embodiment 1, four sealing rings 42 are arranged on the bottom wall above the sealing cover 2, a sealing plate 43 is arranged on the bottom wall below the sealing cover 2, the top of the reaction tank 4 passes through the sealing plate 43, and its top is located directly below the sealing ring 42; so that the reaction tank 4 forms a sealed space; a blocking ring 41 is arranged on the top side wall of the reaction tank 4, and the bottom wall of the sealing plate 43 fits the blocking ring 41;

[0050] After the sodium hydrosulfide crystals are unloaded, the sealing cover 2 is opened, and the reaction tank 4 can be directly taken out, thereby improving the convenience of the present invention;

[0051] like Figure 1-2 As shown in FIGS. 4 and 7 , a feeding and exhaust mechanism 3 is provided above the sealing cover 2, and the feeding and exhaust mechanism 3 includes a feeding pipe 32 fixedly inserted on the sealing cover 2, the input end of the feeding pipe 32 is located in the sealing ring 42, and the input ends of the four feeding pipes 32 are commonly connected to a feeding main pipe 33, and an exhaust pipe 31 is also fixedly inserted on the outer wall of the sealing cover 2 located above the sealing ring 42, and the output ends of the four exhaust pipes 31 are commonly connected to an exhaust main pipe 34, and control valves are provided on the outer walls of the exhaust pipe 31 and the feeding pipe 32 for controlling the feeding of sodium hydrosulfide liquid and the discharge of harmful gases;

[0052] It should be noted here that the feeding main pipe 33 is connected to the sodium hydrosulfide liquid storage equipment, and the exhaust main pipe 34 is connected to the gas treatment and purification equipment. The sodium hydrosulfide liquid transported through the feeding main pipe 33 enters the four feeding pipes 32 respectively, and the control valves are opened synchronously to complete the feeding; the gas generated inside the reaction tank 4 is discharged through the exhaust pipe 31, and is transported to the gas treatment and purification equipment through the exhaust main pipe 34 for a series of treatment and purification. During this period, the control valve on the exhaust pipe 31 is opened.

[0053] The working process and principle of the present invention are as follows:

[0054] Step 1: sodium hydrosulfide liquid is put into each reaction tank 4 through the feeding and exhaust mechanism 3, and the reaction tank 4 is sealed through the sealing cover 2, and the sodium hydrosulfide liquid in the reaction tank 4 is heated to react to accelerate the evaporation rate of water in the sodium hydrosulfide liquid. At the same time, high-temperature gas is generated in the reaction tank 4, and the control valve on the exhaust pipe 31 is opened to allow the high-temperature gas to be output through the exhaust pipe 31. After the sodium hydrosulfide liquid is completely crystallized, the sodium hydrosulfide will gather at the bottom of the reaction tank 4, and a small part will gather on the side wall of the inner cavity of the reaction tank 4;

[0055] Step 2: The driving shaft 76 is controlled to rotate by the motor, so that the connecting rod 75 drives the annular turntable 6 to rotate, and the input end of the inflation tube 741 is connected to the input end of the upper pipeline 733, and the air pump 71 is started synchronously, so that the gas first enters the air inlet pipe 731 through the annular tube 72, and then enters the inflation tube 741 through the upper pipeline 733. The gas output by the inflation tube 741 first passes through the mesh plate, and then enters the interior of the reaction tank 4, and is discharged through the exhaust pipe 31. During the whole process, the external gas first dries the small amount of water in the sodium hydrosulfide crystals, and during the blowing process, the sodium hydrosulfide crystals are shaken to accelerate the drying, and the high-temperature gas inside the reaction tank 4 is blown into the exhaust pipe 31 to discharge the reaction tank 4, so as to avoid the high-temperature gas remaining in the reaction tank 4 from being directly discharged into the atmosphere after the sealing cover 2 is opened, thereby polluting the environment and improving the safety of the device when in use;

[0056] Step 3: After the high-temperature gas in the reaction tank 4 is discharged, the driving shaft 76 is continuously controlled to rotate, so that the input end of the second inflation pipe 745 is connected to the output end of the lower pipe 734, the shielding ring 747 is always sealed to the lower pipe 734, and the buffer pipe 743 is connected to the output end of the reaction tank 4, and the sodium hydrosulfide crystals are discharged through the buffer pipe 743. At the same time, the external gas enters the second inflation plate 744 and the annular gas pipe 746 in sequence, and is finally discharged through the blowing pipe 748. The upward wind speed reduces the feeding speed of the sodium hydrosulfide crystals, and further dries the sodium hydrosulfide crystals, improves the recovery quality of the sodium hydrosulfide, and avoids the subsequent drying steps. At the same time, the dried sodium hydrosulfide crystals are directly discharged through the feeding pipe 8, and there is no need to take them out from the gathering plate of the reaction tank 4 for recovery, reducing the feeding steps, thereby jointly improving the recovery efficiency of the sodium hydrosulfide crystals;

[0057] Step 4: After the sodium hydrosulfide crystals are discharged, the sealing cover 2 is opened, and the reaction tank 4 can be directly taken out, so that the sodium hydrosulfide crystals accumulated on the inner wall of the reaction tank 4 can be scraped off, and the reaction tank 4 can be cleaned, thereby improving the convenience of the present invention.

[0058] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sodium hydrosulfide liquid recovery and processing device, comprising a recovery tank (1) and a sealing cover (2) installed on the top thereof, characterized in that: A partition plate (5) is fixedly arranged on the inner wall of the recovery tank (1), four groups of reaction tanks (4) are inserted above the partition plate (5), and a drying mechanism (7) for drying the sodium hydrosulfide crystals is arranged below the partition plate (5); The drying mechanism (7) comprises a driving shaft (76), a plurality of connecting rods (75) are fixedly arranged on the top of the driving shaft (76), an annular rotating disk (6) is commonly arranged on the outer sides of the plurality of connecting rods (75), and the bottom of the reaction tank (4) is in contact with the annular rotating disk (6); A regulating component for regulating the gas flow direction is arranged on the outside of the annular turntable (6), the regulating component comprising four gas-filling pipes (741) opened inside the annular turntable (6), and a mesh plate is arranged at the output end of the gas-filling pipe (741), and four discharge pipes (742) are also opened inside the annular turntable (6); An air charging component for conveying gas into the reaction tank (4) is arranged outside the regulating component, the air charging component comprising an air pump (71) fixedly connected to the outer wall of the recovery tank (1), the output end of the air pump (71) being connected to an annular tube (72); The output end of the discharge pipe (742) is connected to a buffer pipe (743), and three groups of annular air pipes (746) are arranged on the outer wall of the buffer pipe (743). The output end of the annular air pipe (746) is connected to a plurality of blowing pipes (748), and the output end of the blowing pipe (748) extends into the buffer pipe (743) and is arranged obliquely upward; the outer sides of the three groups of annular air pipes (746) are connected to an inflation plate 2 (744), and an inflation pipe 2 (745) is provided at the input end of the inflation plate 2 (744), and two adjacent inflation plates 2 (744) are fixedly connected via a shielding ring (747); The output end of the annular tube (72) is connected to four air inlet pipes (731), and the input end of the air inlet pipe (731) extends into the recovery tank (1) and is connected to the first inflation plate (732); an upper through pipe (733) is provided above the first inflation plate (732), and a lower through pipe (734) is provided below the first inflation plate (732); the input ends of the upper through pipe (733) and the lower through pipe (734) are both in communication with the air inlet pipe (731); the output end of the upper through pipe (733) and the input end of the first inflation pipe (741) are located on the same horizontal plane, the output end of the lower through pipe (734) and the input end of the second inflation pipe (745) are located on the same horizontal plane, and the inner wall of the first inflation plate (732) is respectively in contact with the outer wall of the shielding ring (747), the outer wall of the second inflation plate (744), and the outer wall of the annular turntable (6).

2. A sodium hydrosulfide liquid recovery and processing equipment according to claim 1, characterized in that: Four sealing rings (42) are arranged on the bottom wall above the sealing cover (2), a sealing plate (43) is arranged on the bottom wall below the sealing cover (2), the top of the reaction tank (4) passes through the sealing plate (43), and the top of the reaction tank (4) is located directly below the sealing rings (42).

3. A sodium hydrosulfide liquid recovery and processing equipment according to claim 2, characterized in that: A blocking ring (41) is provided on the top side wall of the reaction tank (4), the bottom wall of the sealing plate (43) is in contact with the blocking ring (41), and a feeding pipe (8) is provided at the bottom of the recovery tank (1).

4. A sodium hydrosulfide liquid recovery and processing equipment according to claim 1, characterized in that: A feeding and exhaust mechanism (3) is provided above the sealing cover (2), the feeding and exhaust mechanism (3) comprising a feeding pipe (32) inserted on the sealing cover (2), the input end of the feeding pipe (32) being located in the sealing ring (42), and the input ends of the four feeding pipes (32) being commonly connected to a feeding main pipe (33).

5. A sodium hydrosulfide liquid recovery and processing equipment according to claim 4, characterized in that: An exhaust pipe (31) is also inserted on the outer wall of the sealing cover (2) above the sealing ring (42); the output ends of the four exhaust pipes (31) are commonly connected to an exhaust main pipe (34); and control valves are provided on the outer walls of the exhaust pipes (31) and the feeding pipe (32).

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