A pharmaceutical synthesis tail gas filtration device

Abstract

The present invention relates to the technical field of filtration equipment, and discloses a pharmaceutical synthesis tail gas filtration equipment, including a base. The upper surface of the base is fixedly installed with a fixed cylinder, and the fixed cylinder is inclined. The port at the higher end of the fixed cylinder is fixedly installed with an air inlet pipe. Through the reciprocating movement of the honeycomb filter core cylinder, the diameter of the communication between the honeycomb holes on adjacent honeycomb filter core cylinders changes alternately from large to small. At this time, the wind blown out from the air outlet pipe will also become larger and smaller accordingly. By this setting, the flow rate of the wind is intermittently changed, so that the new sodium hydroxide solution can fully contact the tail gas. Through this device, the pharmaceutical synthesis tail gas can fully contact the sodium hydroxide solution for a neutralization reaction, filtering out the hydrogen chloride gas inside the pharmaceutical synthesis tail gas, and improving the effect of tail gas filtration.

Description

Technical Field

[0001] The present invention relates to the technical field of filtration equipment, and in particular to a tail gas filtration equipment for pharmaceutical synthesis. Background Art

[0002] During the pharmaceutical synthesis process, various tail gases are usually generated. These tail gases mainly come from chemical reactions, solvent use, and gases emitted during the production process. These gases include hydrogen chloride (HCl). Acidic gases are highly harmful to the environment and human health. Long-term inhalation can cause damage to the respiratory tract and eyes. Tail gas filtration equipment for pharmaceutical synthesis is used to treat harmful gases generated during the pharmaceutical process to ensure that the discharged gases meet environmental protection standards. Such equipment usually needs to have high-efficiency gas adsorption, decomposition, filtration, and purification capabilities to remove toxic, corrosive, or irritating chemical substances.

[0003] An existing tail gas filtration equipment for pharmaceutical synthesis (Publication No.: CN209138261U) has at least the following drawbacks:

[0004] When the above patent is in use, the waste gas enters the bottom of the cavity from the air duct and is treated by the waste gas treatment liquid in the cavity. The stirring blades can evenly stir the waste gas treatment liquid during the treatment process to realize the continuous operation of waste gas treatment. In the above patent, the waste gas is directly introduced into the waste gas treatment liquid, and the residence time of the waste gas in the waste gas treatment liquid is too short, resulting in incomplete reaction between the waste gas and the waste gas treatment liquid, and the waste gas cannot be completely filtered off, affecting the waste gas filtration effect. Summary of the Invention

[0005] The purpose of the present invention is to solve the drawbacks existing in the prior art and propose a tail gas filtration equipment for pharmaceutical synthesis.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A tail gas filtration equipment for pharmaceutical synthesis, including a base. The upper surface of the base is fixedly installed with a fixed cylinder. The fixed cylinder is inclined. The port at the higher end of the fixed cylinder is fixedly installed with an air inlet pipe. The port at the lower end of the fixed cylinder is fixedly installed with an air outlet pipe. Honeycomb baffles are fixedly installed on the inner walls of the fixed cylinder near both ends. A plurality of honeycomb filter cartridges are rotatably installed on the inner wall of the fixed cylinder. The end faces of adjacent two honeycomb filter cartridges are arranged flush with each other. The end faces of the honeycomb filter cartridges are evenly penetrated with multiple columns of honeycomb holes. A plurality of diversion grooves are opened on the end faces of the opposite ends of the honeycomb filter cartridges. The plurality of diversion grooves are respectively communicated with the multiple columns of honeycomb holes. Driving plates are fixedly installed on the circumferential outer surfaces of the plurality of honeycomb filter cartridges. A plurality of openings are evenly penetrated through the circumferential outer surface of the fixed cylinder. The driving plates penetrate through the openings and are slidably installed with its inner wall.

[0008] As a further solution of the present invention, two supporting blocks are symmetrically and fixedly installed on the circumferential outer surface of the fixed cylinder near the opening. A crankshaft is rotatably installed between the two supporting blocks. A plurality of crank pins are arranged on the outer surface of the crankshaft, and the plurality of crank pins are alternately and symmetrically arranged. A driving groove is formed through the outer surface of the driving plate, and the crank pin is slidably installed on the inner wall of the driving groove. A driving motor is fixedly installed on the outer surface of one side of one of the supporting blocks, and the output end of the driving motor penetrates through the outer surface of the supporting block and is fixedly installed at the rotation center of the crankshaft.

[0009] As a further solution of the present invention, a plurality of flow guiding plates are equidistantly and fixedly installed on the upper surface of the fixed cylinder. A plurality of through holes are equidistantly and evenly formed in the inner walls of the plurality of flow guiding plates, and the through holes are communicated with the flow guiding grooves. An installation sink is formed at the top end of the flow guiding plate. A liquid inlet roller is rotatably installed between the inner walls of the opposite ends of the installation sink. A plurality of liquid inlet holes are equidistantly formed through the circumferential outer surface of the liquid inlet roller, and the liquid inlet holes are communicated with the flow guiding grooves through the through holes. A liquid storage tank is fixedly installed at the top ends of the plurality of flow guiding plates. A plurality of flow through grooves are equidistantly formed through the bottom wall of the liquid storage tank, and the plurality of flow through grooves are respectively communicated with the plurality of installation sinks.

[0010] As a further solution of the present invention, swing rods are fixedly installed through the outer surfaces of both ends of the liquid inlet roller. A driving rod is rotatably installed at the bottom end of the swing rod. A connecting rod is fixedly installed at one end of the driving rod close to the air outlet pipe. A first connecting rod is rotatably installed on the outer surface of the connecting rod. A fixed rod is rotatably installed at the bottom end of the first connecting rod. A support is fixedly installed on the end face of the air outlet pipe close to the fixed rod.

[0011] As a further solution of the present invention, a blowing plate is fixedly installed at the bottom end of the fixed rod. An air storage groove is formed in the outer surface at the middle position of one side of the blowing plate. A plurality of notches are equidistantly formed in the circumferential direction of the outer surface of one side of the blowing plate, and opening and closing plates are slidably installed on the inner walls of the plurality of notches. A plurality of sinks are equidistantly formed in the circumferential direction of the outer surface of the blowing plate close to the air storage groove, and the sinks are communicated with the air storage groove. Piston plates are slidably installed on the inner walls of the plurality of sinks. A sliding column is fixedly installed on the outer surface of the piston plate, and the other end of the sliding column penetrates through the inner wall of the notch and is fixedly installed on the outer surface of the opening and closing plate. A spring is sleeved on the outer surface of the sliding column, and the spring is arranged inside the sink. A sealing plate is fixedly installed on the outer surface of one side of the blowing plate, and an air inlet and outlet valve is arranged on the outer surface of the sealing plate and is communicated with the air storage groove.

[0012] As a further solution of the present invention, a limiting sliding sleeve is fixedly installed on the outer surface of the air outlet pipe close to the support. A square limiting sliding rod is slidably inserted into the inner wall of the limiting sliding sleeve. One end of the square limiting sliding rod abuts against the outer surface of the fixed rod. A second connecting rod is rotatably installed at the other end of the square limiting sliding rod. A connecting column is rotatably installed at the top end of the second connecting rod. A floating block is arranged inside the liquid storage tank. The top end of the floating block penetrates through the upper surface of the liquid storage tank and is slidably installed thereon. A connecting plate is fixedly installed at the top end of the floating block. The top end of the connecting column is fixedly connected to the lower surface of the connecting plate.

[0013] As a further solution of the present invention, a liquid outlet is penetrated and opened on the outer surface of the air outlet pipe close to the lower part. The blowing plate is arranged at the middle position of the air outlet end of the air outlet pipe. A liquid adding port is arranged on the upper surface of the liquid storage tank.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. After the pharmaceutical synthesis tail gas passes through the inner wall of the honeycomb holes, it will undergo a neutralization reaction with the sodium hydroxide solution. With the continuous entry of the new sodium hydroxide solution, the neutralization reaction continuously proceeds to neutralize the hydrogen chloride gas inside the pharmaceutical synthesis tail gas. Since the honeycomb filter core cylinder reciprocates alternately, the diameter of the connection between the honeycomb holes on the adjacent honeycomb filter core cylinders changes alternately from large to small. At this time, the wind blown out from the air outlet pipe will also become larger and smaller accordingly. By this setting, the flow rate of the wind is intermittently changed, so that the new sodium hydroxide solution can fully contact the tail gas. Through this device, the pharmaceutical synthesis tail gas can fully contact the sodium hydroxide solution for neutralization reaction, filtering out the hydrogen chloride gas inside the pharmaceutical synthesis tail gas and improving the tail gas filtering effect;

[0016] 2. When the floating block descends, it will drive the connecting column to descend. The connecting column drives the square limiting sliding rod to slide out of the limiting sliding sleeve through the second connecting rod. At this time, when the top end of the fixed rod swings, it will hit the end of the square limiting sliding rod and make a sound. Through this device, it reminds the operator that the sodium hydroxide solution inside the liquid storage tank is insufficient and new sodium hydroxide solution needs to be added. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a pharmaceutical synthesis tail gas filtering device proposed by the present invention;

[0018] Figure 2 It is a schematic diagram of the rear view structure of a pharmaceutical synthesis tail gas filtering device proposed by the present invention;

[0019] Figure 3 It is a schematic diagram of the left view structure of a pharmaceutical synthesis tail gas filtering device proposed by the present invention;

[0020] Figure 4Schematic top view structure diagram of a pharmaceutical synthesis tail gas filtering device proposed by the present invention;

[0021] Figure 5 Schematic diagram of the liquid inlet roller of a pharmaceutical synthesis tail gas filtering device proposed by the present invention;

[0022] Figure 6 Schematic diagram of the air outlet pipe of a pharmaceutical synthesis tail gas filtering device proposed by the present invention;

[0023] Figure 7 Schematic diagram of the blowing plate of a pharmaceutical synthesis tail gas filtering device proposed by the present invention;

[0024] Figure 8 Schematic diagram of the honeycomb filter core cylinder of a pharmaceutical synthesis tail gas filtering device proposed by the present invention;

[0025] Figure 9 Schematic cross-sectional structure diagram of a pharmaceutical synthesis tail gas filtering device proposed by the present invention

[0026] Figure 10 is Figure 1 Partial enlarged schematic diagram at position A in

[0027] In the figure: 1, base; 2, fixed cylinder; 3, air inlet pipe; 4, air outlet pipe; 401, liquid outlet; 5, liquid storage tank; 6, guide plate; 7, honeycomb baffle; 8, blowing plate; 801, opening and closing plate; 802, air storage tank; 803, piston plate; 804, sinking groove; 805, spring; 806, sliding column; 9, fixed rod; 901, support; 10, first connecting rod; 11, connecting rod; 12, driving rod; 13, swinging rod; 14, liquid inlet roller; 15, limiting sliding sleeve; 16, square limiting sliding rod; 17, second connecting rod; 18, connecting column; 19, connecting plate; 20, floating block; 21, honeycomb filter core cylinder; 2101, driving plate; 2102, driving groove; 2103, honeycomb holes 2103; 2104, guide groove; 2105, opening; 2106, crankshaft; 22, support block; 23, driving motor. Specific embodiments

[0028] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0029] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Referring to Figures 1 - 10 , a medical synthesis tail gas filtering device, including a base 1, a fixed cylinder 2 is fixedly installed on the upper surface of the base 1. The fixed cylinder 2 is inclined. An air inlet pipe 3 is fixedly installed at the port of the high end of the fixed cylinder 2, and an air outlet pipe 4 is fixedly installed at the port of the low end of the fixed cylinder 2. Honeycomb baffles 7 are fixedly installed on the inner walls of the fixed cylinder 2 near both ends. A plurality of honeycomb filter cartridges 21 are rotatably installed on the inner wall of the fixed cylinder 2. The end faces of adjacent two honeycomb filter cartridges 21 are arranged flat against each other. Multiple rows of honeycomb holes 2103 are evenly formed through the end faces of the honeycomb filter cartridges 21. A plurality of flow guiding grooves 2104 are formed on the end faces of the opposite ends of the honeycomb filter cartridges 21. The plurality of flow guiding grooves 2104 are respectively communicated with the multiple rows of honeycomb holes 2103. Driving plates 2101 are fixedly installed on the circumferential outer surfaces of the plurality of honeycomb filter cartridges 21. A plurality of openings 2105 are evenly formed through the circumferential outer surface of the fixed cylinder 2. The driving plates 2101 penetrate through the openings 2105 and are slidably installed on their inner walls. Two support blocks 22 are symmetrically and fixedly installed on the circumferential outer surface of the fixed cylinder 2 near the openings 2105. A crankshaft 2106 is rotatably installed between the two support blocks 22. A plurality of crank necks are arranged on the outer surface of the crankshaft 2106, and the plurality of crank necks are alternately and symmetrically arranged. Driving grooves 2102 are formed through the outer surfaces of the driving plates 2101. The crank necks are slidably installed on the inner walls of the driving grooves 2102. A driving motor 23 is fixedly installed on the outer surface of one side of one of the support blocks 22. The output end of the driving motor 23 penetrates through the outer surface of the support block 22 and is fixedly installed at the rotation center of the crankshaft 2106.

[0032] The driving motor 23 drives the crankshaft 2106 to rotate. The crankshaft 2106 drives the honeycomb filter cartridge 21 to rotate alternately reciprocally through the cooperation of the crank neck and the driving groove 2102. Due to the alternate reciprocating motion of the honeycomb filter cartridge 21, the diameter of the connection between the honeycomb holes 2103 on the adjacent honeycomb filter cartridges 21 changes alternately from large to small. At this time, the wind blown out from the air outlet pipe 4 will also become larger and smaller accordingly. By this setting, the flow rate of the wind is intermittently changed, so that the new sodium hydroxide solution can fully contact the tail gas. Through this device, the pharmaceutical synthesis tail gas can fully contact the sodium hydroxide solution for a neutralization reaction, filtering out the hydrogen chloride gas inside the pharmaceutical synthesis tail gas and improving the effect of tail gas filtration.

[0033] In this embodiment, a plurality of flow guide plates 6 are fixedly installed at equal intervals on the upper surface of the fixed cylinder 2. A plurality of through holes are evenly formed at equal intervals on the inner walls of the plurality of flow guide plates 6, and the through holes are communicated with the flow guide grooves 2104. An installation sink is formed at the top end of the flow guide plate 6. A liquid inlet roller 14 is rotatably installed between the inner walls of the opposite ends of the installation sink. A plurality of liquid inlet holes are evenly formed through the outer circumferential surface of the liquid inlet roller 14 at equal intervals, and the liquid inlet holes are communicated with the flow guide grooves 2104 through the through holes. A liquid storage tank 5 is fixedly installed at the top ends of the plurality of flow guide plates 6. A plurality of flow through grooves are formed through the bottom wall of the liquid storage tank 5 at equal intervals, and the plurality of flow through grooves are respectively communicated with the plurality of installation sinks. Both ends of the liquid inlet roller 14 penetrate through the outer surface of the flow guide plate 6 and are fixedly installed with swing rods 13. A driving rod 12 is rotatably installed at the bottom end of the swing rod 13. A connecting rod 11 is fixedly installed at one end of the driving rod 12 close to the air outlet pipe 4. A first connecting rod 10 is rotatably installed on the outer surface of the connecting rod 11. A fixed rod 9 is rotatably installed at the bottom end of the first connecting rod 10. A support 901 is fixedly installed on the end face of the air outlet pipe 4 close to the fixed rod 9. A blowing plate 8 is fixedly installed at the bottom end of the fixed rod 9.

[0034] When the tail gas is blown out from the air outlet pipe 4, the blowing plate 8 is driven by the tail gas, and the blowing plate 8 drives the fixed rod 9 to rotate. The fixed rod 9 drives the driving rod 12 to reciprocate through the first connecting rod 10 and the connecting rod 11. The driving rod 12 drives the liquid inlet roller 14 to rotate reciprocally through the swing rod 13, so that the liquid inlet holes on the liquid inlet roller 14 are communicated with the diversion groove 2104 through the through holes. The sodium hydroxide solution inside the liquid storage tank 5 will flow into the inside of the diversion groove 2104 from the flow groove. Since the fixed cylinder 2 is inclined, the sodium hydroxide solution flowing through the diversion groove 2104 will flow into the honeycomb holes 2103 of the honeycomb filter core cylinder 21. Coupled with the reciprocating swing of the honeycomb filter core cylinder 21, the sodium hydroxide solution will adhere to the inner wall of the honeycomb holes 2103 of the honeycomb filter core cylinder 21. By intermittently changing the flow rate of the wind, at the same time, it is beneficial for the new sodium hydroxide solution to re-adhere to the inner wall of the honeycomb holes 2103. The size of the wind blown out from the air outlet pipe 4 changes, causing the blowing plate 8 to swing reciprocally, and intermittently injecting the new sodium hydroxide solution into the honeycomb holes 2103. Through this device, it is convenient to intermittently and quantitatively control the sodium hydroxide solution entering the honeycomb filter core cylinder 21 and avoid waste of the sodium hydroxide solution.

[0035] In this embodiment, an air storage groove 802 is formed on the outer surface at the middle position on one side of the blowing plate 8. A plurality of notches are equidistantly arranged in the circumferential direction on the outer surface of one side of the blowing plate 8. The inner walls of the plurality of notches are all slidably provided with opening and closing plates 801. A plurality of sinking grooves 804 are equidistantly arranged in the circumferential direction on the outer surface of the blowing plate 8 close to the air storage groove 802. The sinking grooves 804 are communicated with the air storage groove 802. The inner walls of the plurality of sinking grooves 804 are all slidably provided with piston plates 803. A sliding column 806 is fixedly installed on the outer surface of the piston plate 803. The other end of the sliding column 806 penetrates through the inner wall of the notch and is fixedly installed on the outer surface of the opening and closing plate 801. A spring 805 is sleeved on the outer surface of the sliding column 806. The spring 805 is arranged inside the sinking groove 804. A sealing plate is fixedly installed on the outer surface of one side of the blowing plate 8. An air inlet and outlet valve is arranged on the outer surface of the sealing plate. The air inlet and outlet valve is communicated with the air storage groove 802.

[0036] Since heat will be released when sodium hydroxide solution and hydrogen chloride gas undergo a neutralization reaction, when the concentration of hydrogen chloride gas in the pharmaceutical synthesis tail gas is relatively high, the heat released by the neutralization reaction will increase. At this time, the temperature of the filtered gas blown out from the air outlet pipe 4 will rise. Due to the temperature rise, the helium gas inside the air storage groove 802 expands. At this time, the piston plate 803 drives the opening and closing plate 801 to unfold through the sliding column 806. Through this device, when the concentration of hydrogen chloride gas in the pharmaceutical synthesis tail gas is relatively high, the wind-receiving area of the blowing plate 8 is increased, so that the blowing plate 8 can also rotate a large amplitude of the liquid inlet roller 14 even when the blown wind is small, thereby increasing the amount of sodium hydroxide solution entering the honeycomb filter core cylinder 21 and enabling full neutralization and absorption even when the concentration of hydrogen chloride gas is high.

[0037] In this embodiment, a limiting sliding sleeve 15 is fixedly installed on the outer surface of the air outlet pipe 4 close to the support 901. A square limiting sliding rod 16 is slidably inserted into the inner wall of the limiting sliding sleeve 15. One end of the square limiting sliding rod 16 abuts against the outer surface of the fixed rod 9. A second connecting rod 17 is rotatably installed at the other end of the square limiting sliding rod 16. A connecting column 18 is rotatably installed at the top end of the second connecting rod 17. A floating block 20 is arranged inside the liquid storage tank 5. The top end of the floating block 20 penetrates through the upper surface of the liquid storage tank 5 and is slidably installed thereon. A connecting plate 19 is fixedly installed at the top end of the floating block 20. The top end of the connecting column 18 is fixedly connected to the lower surface of the connecting plate 19.

[0038] When the sodium hydroxide solution inside the liquid storage tank 5 gradually decreases, the floating block 20 will gradually descend. When the floating block 20 descends, it will drive the connecting column 18 to descend. The connecting column 18 drives the square limiting sliding rod 16 to slide out of the limiting sliding sleeve 15 through the second connecting rod 17. At this time, when the top end of the fixed rod 9 swings, it will strike the end of the square limiting sliding rod 16 to make a sound, reminding the operator through this device that the sodium hydroxide solution inside the liquid storage tank 5 is insufficient and new sodium hydroxide solution needs to be added.

[0039] In this embodiment, a liquid outlet 401 is penetrated and opened on the outer surface of the air outlet pipe 4 close to the lower part. The blowing plate 8 is arranged at the middle position of the air outlet end of the air outlet pipe 4. A liquid adding port is arranged on the upper surface of the liquid storage tank 5. The neutralized waste liquid is discharged through the liquid outlet 401.

[0040] In this embodiment, it should be noted that when the equipment starts to move, the blowing plate 8 can be manually swung so that a part of the sodium hydroxide solution can enter the honeycomb holes 2103 first.

[0041] It should be noted that when the present invention is in use, the operator adds a certain concentration of sodium hydroxide solution into the liquid storage tank 5, then injects a certain amount of helium into the air storage tank 802 inside the blowing plate 8 through the air inlet and outlet valve, and then connects the pharmaceutical synthesis tail gas to the air inlet pipe 3 through a trachea. The pharmaceutical synthesis tail gas enters the inside of the fixed cylinder 2 through the air inlet pipe 3 and the honeycomb holes 2103 on the honeycomb baffle 7. When the pharmaceutical synthesis tail gas enters, it will enter layer by layer through the honeycomb holes 2103 on the honeycomb filter core cylinder 21 and then be discharged from the air outlet pipe 4;

[0042] When the tail gas from pharmaceutical synthesis enters the honeycomb filter cartridge 21, the crankshaft 2106 is driven to rotate by the driving motor 23. Through the cooperation of the crank neck and the driving groove 2102, the honeycomb filter cartridge 21 is driven to rotate alternately and reciprocally, so that the honeycomb holes 2103 on the honeycomb filter cartridge 21 are connected. When the tail gas is blown out from the air outlet pipe 4, the blowing plate 8 is driven by the tail gas, and the blowing plate 8 drives the fixed rod 9 to rotate. The fixed rod 9 drives the driving rod 12 to reciprocate through the first connecting rod 10 and the connecting rod 11. The driving rod 12 drives the liquid inlet roller 14 to rotate reciprocally through the swing rod 13, so that the liquid inlet holes on the liquid inlet roller 14 are connected to the diversion groove 2104 through the through holes. The sodium hydroxide solution inside the liquid storage tank 5 will flow into the inside of the diversion groove 2104 from the flow groove. Since the fixed cylinder 2 is inclined, the sodium hydroxide solution flowing through the diversion groove 2104 will flow into the honeycomb holes 2103 of the honeycomb filter cartridge 21. Coupled with the reciprocating swing of the honeycomb filter cartridge 21, the sodium hydroxide solution will adhere to the inner wall of the honeycomb holes 2103 of the honeycomb filter cartridge 21. After the tail gas from pharmaceutical synthesis passes through the inner wall of the honeycomb holes 2103, it will carry out a neutralization reaction with the sodium hydroxide solution. With the continuous entry of the new sodium hydroxide solution, the neutralization reaction continuously proceeds to neutralize the hydrogen chloride gas inside the tail gas from pharmaceutical synthesis. Due to the alternating reciprocating movement of the honeycomb filter cartridge 21, the diameter of the connection between the honeycomb holes 2103 on the adjacent honeycomb filter cartridges 21 changes alternately from large to small. At this time, the wind blown out from the air outlet pipe 4 will also become larger and smaller accordingly. By this setting, the flow rate of the wind is intermittently changed, so that the new sodium hydroxide solution can fully contact the tail gas. Through this device, the tail gas from pharmaceutical synthesis can fully contact the sodium hydroxide solution for neutralization reaction, filter out the hydrogen chloride gas inside the tail gas from pharmaceutical synthesis, and improve the tail gas filtration effect.

[0043] By intermittently changing the flow rate of the wind, at the same time, it is beneficial for the new sodium hydroxide solution to reattach to the inner wall of the honeycomb holes 2103. The change in the size of the wind blown out from the air outlet pipe 4 causes the blowing plate 8 to swing reciprocally, and intermittently injects the new sodium hydroxide solution into the honeycomb holes 2103. Through this device, it is convenient to intermittently and quantitatively control the sodium hydroxide solution entering the honeycomb filter cartridge 21 and avoid waste of the sodium hydroxide solution;

[0044] When the sodium hydroxide solution inside the liquid storage tank 5 gradually decreases, the floating block 20 will gradually descend. When the floating block 20 descends, it will drive the connecting column 18 to descend. The connecting column 18 drives the square limit slide bar 16 to slide out of the limit sleeve 15 through the second connecting rod 17. At this time, when the top of the fixed rod 9 swings, it will collide with the end of the square limit slide bar 16 to make a sound. Through this device, the operator is reminded that the sodium hydroxide solution inside the liquid storage tank 5 is insufficient and new sodium hydroxide solution needs to be added;

[0045] Since heat is released during the neutralization reaction between sodium hydroxide solution and hydrogen chloride gas, when the concentration of hydrogen chloride gas contained in the pharmaceutical synthesis tail gas is relatively high, the heat released by the neutralization reaction will increase. At this time, the temperature of the filtered gas blown out from the air outlet pipe 4 will rise, causing the helium gas inside the gas storage tank 802 to expand through the temperature increase. At this time, the piston plate 803 drives the opening and closing plate 801 to unfold through the sliding column 806. Through this device, when the concentration of hydrogen chloride gas contained in the pharmaceutical synthesis tail gas is relatively high, the wind-receiving area of the blowing plate 8 is increased, so that the blowing plate 8 can also rotate the liquid inlet roller 14 by a large amplitude even when the blown wind is small, thereby increasing the amount of sodium hydroxide solution entering the honeycomb filter core cylinder 21, so as to fully neutralize and absorb even when the concentration of hydrogen chloride gas is relatively high.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A pharmaceutical synthesis tail gas filtration device, comprising a base (1), characterized in that: A fixed cylinder (2) is fixedly mounted on the upper surface of the base (1); the fixed cylinder (2) is tilted; an air inlet pipe (3) is fixedly mounted on a higher end of the fixed cylinder (2); an air outlet pipe (4) is fixedly mounted on a lower end of the fixed cylinder (2); honeycomb baffles (7) are fixedly mounted on the inner walls of the fixed cylinder (2) near both ends; a plurality of honeycomb filter cartridges (21) are rotatably mounted on the inner wall of the fixed cylinder (2); the end surfaces of two adjacent honeycomb filter cartridges (21) are arranged flush with each other; a plurality of rows of honeycomb holes (2103) are evenly penetrated through the end surfaces of the honeycomb filter cartridges (21); a plurality of guide grooves (2104) are provided on the end surfaces of the opposite ends of the honeycomb filter cartridges (21); and the plurality of guide grooves (2104) are provided on the inner walls of the fixed cylinder (2) near both ends. The grooves (2104) are respectively connected to the multiple rows of honeycomb holes (2103); the circumferential outer surfaces of the multiple honeycomb filter cartridges (21) are all fixedly mounted with drive plates (2101); the circumferential outer surface of the fixed cartridge (2) is equidistantly penetrated with multiple openings (2105); the drive plate (2101) penetrates the openings (2105) and is slidably mounted on the inner wall thereof; two support blocks (22) are symmetrically fixedly mounted on the circumferential outer surface of the fixed cartridge (2) near the openings (2105); a crankshaft (2106) is rotatably mounted between the two support blocks (22); the outer surface of the crankshaft (2106) is provided with multiple curved necks, and the multiple curved necks are alternately and symmetrically arranged; the outer surface of the drive plate (2101) is penetrated with a drive plate (2101); The driving groove (2102) is slidably mounted on the inner wall of the driving groove (2102), a driving motor (23) is fixedly mounted on the outer surface of one side of the supporting block (22), the output end of the driving motor (23) penetrates the outer surface of the supporting block (22) and is fixedly mounted on the rotation center of the crankshaft (2106), a plurality of guide plates (6) are equidistantly fixedly mounted on the upper surface of the fixed cylinder (2), the inner walls of the plurality of guide plates (6) are uniformly and evenly provided with a plurality of through holes, the through holes are connected to the guide groove (2104), a mounting groove is provided on the top of the guide plate (6), a liquid inlet roller (14) is rotatably mounted between the inner walls at opposite ends of the mounting groove, the circumferential outer surface of the liquid inlet roller (14) penetrates the openings equidistantly, and the liquid inlet roller (14) is fixedly mounted on the outer surface of the fixed cylinder (2). A plurality of liquid inlet holes are provided, the liquid inlet holes are connected to the guide groove (2104) through a through hole, a liquid storage tank (5) is fixedly installed on the top of the plurality of guide plates (6), a plurality of flow grooves are equidistantly penetrated through the bottom wall of the liquid storage tank (5), and the plurality of flow grooves are separately connected to a plurality of installation sinks, both ends of the liquid inlet roller (14) penetrate the outer surface of the guide plate (6) and are fixedly installed with a swing rod (13), the bottom end of the swing rod (13) is rotatably installed with a driving rod (12), the end of the driving rod (12) close to the air outlet pipe (4) is fixedly installed with a connecting rod (11), the outer surface of the connecting rod (11) is rotatably installed with a first connecting rod (10), and the bottom end of the first connecting rod (10) is rotatably installed with a fixing rod (9),A support (901) is fixedly mounted on the end surface of the air outlet pipe (4) close to the fixed rod (9), and a blowing plate (8) is fixedly mounted on the bottom end of the fixed rod (9).

2. The pharmaceutical synthesis tail gas filtration equipment according to claim 1, characterized in that: An air storage groove (802) is provided on the outer surface of one side of the blowing plate (8) at a middle position, a plurality of notches are provided at equal intervals in the circumferential direction of the outer surface of one side of the blowing plate (8), an opening and closing plate (801) is slidably mounted on the inner walls of the plurality of notches, a plurality of sink grooves (804) are provided at equal intervals in the circumferential direction of the outer surface of the blowing plate (8) close to the air storage groove (802), the sink grooves (804) are connected to the air storage groove (802), and a piston plate (803) is slidably mounted on the inner walls of the plurality of sink grooves (804) A sliding column (806) is fixedly mounted on the outer surface of the piston plate (803); the other end of the sliding column (806) passes through the inner wall of the notch and is fixedly mounted on the outer surface of the opening and closing plate (801); a spring (805) is sleeved on the outer surface of the sliding column (806); the spring (805) is arranged inside the sink (804); a sealing plate is fixedly mounted on the outer surface of one side of the blowing plate (8); an inlet and outlet valve is arranged on the outer surface of the sealing plate; the inlet and outlet valve is communicated with the air storage tank (802).

3. The pharmaceutical synthesis tail gas filtration equipment according to claim 2, characterized in that: A limiting sliding sleeve (15) is fixedly installed on the outer surface of the air outlet pipe (4) close to the support (901), and a square limiting sliding rod (16) is slidably inserted into the inner wall of the limiting sliding sleeve (15). One end of the square limiting sliding rod (16) abuts against the outer surface of the fixed rod (9), and the other end of the square limiting sliding rod (16) is rotatably installed with a second connecting rod (17), and the top end of the second connecting rod (17) is rotatably installed with a connecting column (18). A floating block (20) is arranged inside the liquid storage tank (5), and the top end of the floating block (20) penetrates the upper surface of the liquid storage tank (5) and is slidably installed therewith, and a connecting plate (19) is fixedly installed on the top end of the floating block (20), and the top end of the connecting column (18) is fixedly connected to the lower surface of the connecting plate (19).

4. The pharmaceutical synthesis tail gas filtration equipment according to claim 3, characterized in that: The outer surface of the air outlet pipe (4) near the bottom is provided with a liquid outlet (401), the blowing plate (8) is arranged at the middle position of the air outlet end of the air outlet pipe (4), and the upper surface of the liquid storage box (5) is provided with a liquid filling port.

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