Waste gas filtering device for medical intermediate production

Abstract

The utility model discloses a waste gas filtering device for medical intermediate production, and relates to the technical field of waste gas treatment. The device comprises a bottom plate and a reaction kettle, wherein a flow guide mechanism, a filtering mechanism and a circulating mechanism are arranged on the bottom plate; the flow guide mechanism comprises a reaction kettle fixedly mounted on the top surface of the bottom plate, the top surface of the reaction kettle is communicated with an air outlet pipe, the top surface of the air outlet pipe is communicated with a connecting cylinder, a sealing sleeve is fixedly mounted on the inner bottom wall of the connecting cylinder, and a fixed sleeve is fixedly mounted on the inner bottom wall of the connecting cylinder; the sealing sleeve is located in the fixing sleeve, a plurality of fixing rods are fixedly installed on the top face of the fixing sleeve, and a U-shaped flow guide plate is fixedly installed at the top ends of the fixing rods. By arranging the flow guide mechanism, water flow is prevented from flowing into the fixed sleeve in the spraying process to form accumulated water to cause blockage.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas treatment, and particularly relates to an exhaust gas filtering device for the production of pharmaceutical intermediates. Background Technique

[0002] In the prior art, through retrieval, it is found that a Chinese patent discloses "a wastewater treatment device for the production of pharmaceutical intermediates", and its application number is "CN202120714667.3". This patent not only realizes the auxiliary treatment of waste gas by the wastewater treatment device, realizes the scraping wall property of the wastewater treatment device, but also realizes the cleanliness of the interior of the wastewater treatment device.

[0003] However, during the process of the exhaust gas being discharged and exhausted, the distance between the exhaust pipe and the spray head is too close, which will cause water flow to flow into the exhaust pipe during spraying. Once the water flow enters the exhaust pipe, it will have a certain impact on the normal exhaust of the waste gas. For example, the water flow may block part of the interior of the exhaust pipe, resulting in a narrower air flow channel, thereby reducing the exhaust speed and efficiency of the waste gas. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an exhaust gas filtering device for the production of pharmaceutical intermediates. By setting a diversion mechanism, it is avoided that water flow will flow into the interior of the fixed sleeve during spraying to form water accumulation and cause blockage, and the problem that during the process of the exhaust gas being discharged and exhausted, the distance between the exhaust pipe and the spray head is too close, which will cause water flow to flow into the exhaust pipe during spraying, block part of the interior of the exhaust pipe, resulting in a narrower air flow channel, thereby reducing the exhaust speed and efficiency of the waste gas is solved.

[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0006] The utility model is an exhaust gas filtering device for the production of pharmaceutical intermediates, including a bottom plate and a reaction kettle. A diversion mechanism, a filtering mechanism and a circulation mechanism are arranged on the bottom plate;

[0007] The diversion mechanism includes a reaction kettle fixedly installed on the top surface of the bottom plate. An air outlet pipe is communicated with the top surface of the reaction kettle. A connecting cylinder is communicated with the top surface of the air outlet pipe. A sealing sleeve is fixedly installed on the inner bottom wall of the connecting cylinder. A fixed sleeve is fixedly installed on the inner bottom wall of the connecting cylinder. The sealing sleeve is located inside the fixed sleeve. A plurality of fixing rods are fixedly installed on the top surface of the fixed sleeve. The top ends of the plurality of fixing rods are fixedly installed with a U-shaped diversion plate. Two air outlet holes are opened on the sealing sleeve.

[0008] Further, the filtering mechanism includes an exhaust component and a filtering component. The exhaust component includes a sliding rod slidably mounted on the top surface of the sealing sleeve. The bottom end of the sliding rod extends into the interior of the sealing sleeve. A piston is fixedly installed at the bottom end of the sliding rod. The piston is slidably connected to the inner wall of the sealing sleeve. A first spring is sleeved on the sliding rod. The top end of the first spring is fixedly connected to the inner wall of the sealing sleeve, and the bottom end of the first spring is fixedly connected to the top surface of the piston.

[0009] Further, the filtering component includes an exhaust pipe communicatively arranged on the top surface of the connecting cylinder. An exhaust funnel is slidably connected to the inner wall of the exhaust pipe. An activated carbon filter sheet is fixedly installed on the inner wall of the exhaust funnel.

[0010] Further, the circulation mechanism includes a spraying component, a collecting component, and a filtering component. The spraying component includes a water storage tank fixedly installed on the top surface of the bottom plate. A liquid pump is fixedly installed on the inner wall of the water storage tank. The output end of the liquid pump is fixedly installed with a first conduit. The end of the first conduit away from the liquid pump extends into the interior of the connecting cylinder. A spray head is fixedly installed at the end of the first conduit away from the liquid pump.

[0011] Further, the collecting component includes a second conduit communicatively arranged on the outer wall of the connecting cylinder. The end of the second conduit away from the connecting cylinder extends into the interior of the water storage tank. The second conduit is fixedly connected to the water storage tank.

[0012] Further, the filtering component includes a groove fixedly opened on the top surface of the water storage tank. A filter plate is slidably connected to the inner wall of the groove.

[0013] Further, a fixing piece is fixedly installed on the front surface of the filter plate. A slot is opened on the water storage tank. An insertion rod passes through the fixing piece. The insertion rod is slidably connected to the fixing piece. The insertion rod is adapted to the slot. The insertion rod is slidably connected to the inner wall of the slot. A connecting block is fixedly installed at the end of the insertion rod away from the fixing piece. A second spring is fixedly installed between the connecting block and the fixing piece. The second spring is sleeved on the insertion rod. A pull ring is fixedly installed on the front surface of the connecting block.

[0014] Further, a number of support rods are fixedly installed between the connecting cylinder and the reaction kettle.

[0015] The utility model has the following beneficial effects:

[0016] 1. By providing a diversion mechanism, the waste gas flows into the interior of the connecting cylinder through the gap between the fixed rod and the U-shaped diversion plate. It can not only slow down the flow rate of the waste gas so that the impurities in the waste gas are fully mixed with the water flow, but also prevent the water flow from flowing into the interior of the fixed sleeve during spraying to form water accumulation and cause blockage.

[0017] 2. By setting up a filtering mechanism, the first spring and the piston cooperate with each other to form an automatic pressure relief and exhaust cycle. The exhausted exhaust gas is fully mixed with the water flow when passing through the inside of the fixed sleeve, which can effectively mix and dilute the harmful substances in the exhaust gas. Then, the exhaust gas flows into the exhaust funnel through the exhaust pipe. In the exhaust funnel, the exhaust gas will flow through the activated carbon filter. The activated carbon has a strong adsorption capacity and can effectively adsorb and filter the harmful gases in the exhaust gas to reduce its concentration, thereby achieving the purpose of treating the exhaust gas.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of an exhaust gas filtering device for the production of pharmaceutical intermediates according to the utility model;

[0021] Figure 2 This is a front cross-sectional structural schematic diagram of an exhaust gas filtering device for the production of pharmaceutical intermediates according to the utility model;

[0022] Figure 3 This is a schematic diagram of the left side cross-sectional structure of an exhaust gas filtering device for the production of pharmaceutical intermediates according to the utility model;

[0023] Figure 4 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 5 for Figure 3 Schematic diagram of the enlarged structure at point B in the middle.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Bottom plate; 2. Flow guiding mechanism; 3. Filtration mechanism; 4. Circulation mechanism; 5. Support rod; 21. Reactor; 22. Air outlet pipe; 23. Connecting cylinder; 24. Sealing sleeve; 25. Fixed sleeve; 26. Fixed rod; 27. C-shaped flow guiding plate; 31. Air outlet hole; 32. Slide rod; 33. Piston; 34. First spring; 35. Exhaust pipe; 36. Exhaust funnel; 37. Activated carbon filter sheet; 41. Water storage tank; 42. Liquid pump; 43. First conduit; 44. Sprinkler head; 45. Second conduit; 46. Groove; 47. Filter plate; 48. Fixed piece; 481. Slot; 482. Insert rod; 483. Connecting block; 484. Second spring; 485. Pull ring. Detailed implementation manner

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to Figure 1-5 As shown, the present invention is an exhaust gas filtering device for the production of pharmaceutical intermediates, including a bottom plate 1 and a reactor 21. A flow guiding mechanism 2, a filtration mechanism 3 and a circulation mechanism 4 are arranged on the bottom plate 1;

[0029] The flow guiding mechanism 2 includes a reactor 21 fixedly installed on the top surface of the bottom plate 1. An air outlet pipe 22 is communicated with the top surface of the reactor 21. A connecting cylinder 23 is communicated with the top surface of the air outlet pipe 22. A sealing sleeve 24 is fixedly installed on the inner bottom wall of the connecting cylinder 23. A fixed sleeve 25 is fixedly installed on the inner bottom wall of the connecting cylinder 23. The sealing sleeve 24 is located inside the fixed sleeve 25. A plurality of fixed rods 26 are fixedly installed on the top surface of the fixed sleeve 25. The top ends of the plurality of fixed rods 26 are fixedly installed with a C-shaped flow guiding plate 27. Two air outlet holes 31 are opened on the sealing sleeve 24. By providing the flow guiding mechanism 2, not only can the flow rate of the exhaust gas be slowed down to make the impurities in the exhaust gas fully mix with the water flow, but also it can be avoided that the water flow flows into the inside of the fixed sleeve 25 during the spraying process to form water accumulation and cause blockage;

[0030] The filter mechanism 3 includes an exhaust component and a filter component. The exhaust component includes a slide rod 32 slidably mounted on the top surface of the sealing sleeve 24, the bottom end of the slide rod 32 extends to the inside of the sealing sleeve 24, a piston 33 is fixedly mounted on the bottom end of the slide rod 32, the piston 33 is slidably connected to the inner wall of the sealing sleeve 24, a first spring 34 is sleeved on the slide rod 32, the top end of the first spring 34 is fixedly connected to the inner wall of the sealing sleeve 24, the bottom end of the first spring 34 is fixedly connected to the top surface of the piston 33, the filter component includes an exhaust pipe 35 connected to the top surface of the connecting tube 23, an exhaust funnel 36 is slidably connected to the inner wall of the exhaust pipe 35, and an activated carbon filter 37 is fixedly mounted on the inner wall of the exhaust funnel 36. By providing the filter mechanism 3, not only an automatic pressure relief and exhaust cycle can be formed, but also the activated carbon filter 37 has a strong adsorption capacity, which can effectively adsorb and filter harmful gases in the exhaust gas to reduce its concentration, thereby achieving the purpose of treating the exhaust gas;

[0031] The circulation mechanism 4 includes a spray component, a collection component and a filter component. The spray component includes a water storage tank 41 fixedly installed on the top surface of the base plate 1, a liquid pump 42 is fixedly installed on the inner wall of the water storage tank 41, a first conduit 43 is fixedly installed on the output end of the liquid pump 42, an end of the first conduit 43 away from the liquid pump 42 extends to the interior of the connecting tube 23, and a spray head 44 is fixedly installed on the end of the first conduit 43 away from the liquid pump 42. The collecting component includes a second conduit 45 connected to the outer wall of the connecting tube 23, an end of the second conduit 45 away from the connecting tube 23 extends to the interior of the water storage tank 41, and the second conduit 45 is fixedly connected to the water storage tank 41. The filter component includes a groove 46 fixedly opened on the top surface of the water storage tank 41, a filter plate 47 is slidably connected to the inner wall of the groove 46, a fixing plate 48 is fixedly installed on the front of the filter plate 47, a slot 481 is opened on the water storage tank 41, and the fixing plate A plug rod 482 runs through 48, and the plug rod 482 is slidably connected to the fixed plate 48. The plug rod 482 is adapted to the slot 481, and the plug rod 482 is slidably connected to the inner wall of the slot 481. A connecting block 483 is fixedly installed on the end of the plug rod 482 away from the fixed plate 48, and a second spring 484 is fixedly installed between the connecting block 483 and the fixed plate 48. The second spring 484 is sleeved on the plug rod 482, and a pull ring 485 is fixedly installed on the front of the connecting block 483. A plurality of support rods 5 are fixedly installed between the connecting tube 23 and the reactor 21. By providing a circulation mechanism 4, the mixed waste water flows back to the inside of the water storage tank 41 through the second conduit 45, and is put into use again after being filtered by the filter plate 47, which greatly improves the utilization rate of water resources. By providing the support rod 5, the connecting tube 23 can be fixed on the top surface of the reactor 21, thereby improving the stability of the overall device.

[0032] A specific application of this embodiment is as follows: By providing a diversion mechanism 2, after the drug reaction inside the reactor 21 is completed, some waste gas may be generated. The waste gas flows into the inside of the sealing sleeve 24 after passing through the air outlet pipe 22, and then flows into the inside of the fixed sleeve 25 through the air outlet holes 31. After that, the waste gas flows into the inside of the connecting cylinder 23 through the gap between the fixed rod 26 and the U-shaped diversion plate 27. This can not only slow down the flow rate of the waste gas so that the impurities in the waste gas can be fully mixed with the water flow, but also prevent the water flow from flowing into the inside of the fixed sleeve 25 during the spraying process to form water accumulation and cause blockage;

[0033] By providing a filtering mechanism 3, the waste gas inside the reactor 21 will continuously accumulate due to the reaction, resulting in a gradual increase in the internal pressure of the reactor 21. When the pressure reaches a certain level, the pressure will cause the piston 33 to slowly move upward. When the piston 33 moves above the air outlet hole 31, the waste gas can enter the inside of the fixed sleeve 25 through the air outlet hole 31. At the same time, the piston 33 is also connected to the sliding rod 32, and a first spring 34 is sleeved on the sliding rod 32. The first spring 34 has a certain reset function. When the air pressure inside the connecting cylinder 23 is balanced with the air pressure inside the reactor 21, the first spring 34 will reset the piston 33 to fall, forming an automatic pressure relief and exhaust cycle. When the exhausted waste gas passes through the inside of the fixed sleeve 25, it is fully mixed with the water flow, which can effectively mix and dilute the harmful substances in the waste gas. Then, the waste gas flows into the exhaust funnel 36 through the exhaust pipe 35. Inside the exhaust funnel 36, the waste gas will flow through the activated carbon filter sheet 37. Activated carbon has a strong adsorption capacity and can effectively adsorb and filter the harmful gases in the waste gas, reducing their concentration, thereby achieving the purpose of treating the waste gas;

[0034] By providing a circulation mechanism 4, the liquid pump 42 can pump the water inside the water storage tank 41 to the spray head 44 inside the connecting cylinder 23 through the first conduit 43 and spray it out through the spray head 44, so that the particulate impurities in the waste gas are fully diluted and mixed with the water flow. The mixed wastewater flows back into the inside of the water storage tank 41 through the second conduit 45 and is filtered by the filter plate 47 before being put into use again, greatly improving the utilization rate of water resources. The groove 46 and the filter plate 47 cooperate with each other, enabling the filter plate 47 to be pulled out for cleaning and replacement. When the filter plate 47 needs to be replaced, the pull ring 485 can be pulled to make the insertion rod 482 away from the insertion slot 481, so that the filter plate 47 can be easily taken out. After releasing the pull ring 485, the second spring 484 and the connecting block 483 cooperate with each other, enabling the second spring 484 to be reset, so that the insertion rod 482 slides into the insertion slot 481 inside, fixing the filter plate 47 on the water storage tank 41, thus forming a long-term effective cycle filtration process;

[0035] By providing a support rod 5, the connecting cylinder 23 can be fixed on the top surface of the reactor 21, improving the stability of the overall device.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. 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 utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A waste gas filtering device for the production of pharmaceutical intermediates, comprising a base plate (1) and a reaction kettle (21), characterized in that: A diversion mechanism (2), a filtering mechanism (3) and a circulation mechanism (4) are arranged on the bottom plate (1); The diversion mechanism (2) includes a reaction kettle (21) fixedly installed on the top surface of the bottom plate (1). An air outlet pipe (22) is communicated with the top surface of the reaction kettle (21). A connecting cylinder (23) is communicated with the top surface of the air outlet pipe (22). A sealing sleeve (24) is fixedly installed on the inner bottom wall of the connecting cylinder (23). A fixed sleeve (25) is fixedly installed on the inner bottom wall of the connecting cylinder (23). The sealing sleeve (24) is located inside the fixed sleeve (25). A plurality of fixing rods (26) are fixedly installed on the top surface of the fixed sleeve (25). The top ends of the plurality of fixing rods (26) are fixedly installed with a U-shaped diversion plate (27). Two air outlet holes (31) are formed in the sealing sleeve (24).

2. The waste gas filtration device for the production of pharmaceutical intermediates according to claim 1, characterized in that: The filtering mechanism (3) includes an exhaust assembly and a filtering assembly. The exhaust assembly includes a sliding rod (32) slidably installed on the top surface of the sealing sleeve (24). The bottom end of the sliding rod (32) extends into the sealing sleeve (24). A piston (33) is fixedly installed at the bottom end of the sliding rod (32). The piston (33) is slidably connected with the inner wall of the sealing sleeve (24). A first spring (34) is sleeved on the sliding rod (32). The top end of the first spring (34) is fixedly connected with the inner wall of the sealing sleeve (24). The bottom end of the first spring (34) is fixedly connected with the top surface of the piston (33).

3. The waste gas filtration device for the production of pharmaceutical intermediates according to claim 2, characterized in that: The filtering assembly includes an exhaust pipe (35) communicated with the top surface of the connecting cylinder (23). An exhaust funnel (36) is slidably connected with the inner wall of the exhaust pipe (35). An activated carbon filter sheet (37) is fixedly installed on the inner wall of the exhaust funnel (36).

4. The waste gas filtration device for the production of pharmaceutical intermediates according to claim 1, characterized in that: The circulation mechanism (4) includes a spraying assembly, a collecting assembly and a filtering assembly. The spraying assembly includes a water storage tank (41) fixedly installed on the top surface of the bottom plate (1). A liquid pump (42) is fixedly installed on the inner wall of the water storage tank (41). The output end of the liquid pump (42) is fixedly installed with a first conduit (43). One end of the first conduit (43) far away from the liquid pump (42) extends into the connecting cylinder (23). A spray head (44) is fixedly installed at one end of the first conduit (43) far away from the liquid pump (42).

5. The waste gas filtering device for the production of pharmaceutical intermediates according to claim 4, characterized in that: The collecting assembly includes a second conduit (45) communicated with the outer wall of the connecting cylinder (23). One end of the second conduit (45) far away from the connecting cylinder (23) extends into the water storage tank (41). The second conduit (45) is fixedly connected with the water storage tank (41).

6. The waste gas filtering device for the production of pharmaceutical intermediates according to claim 5, characterized in that: The filtering assembly includes a groove (46) fixedly formed on the top surface of the water storage tank (41). A filter plate (47) is slidably connected with the inner wall of the groove (46).

7. The waste gas filtering device for the production of pharmaceutical intermediates according to claim 6, characterized in that: A fixing plate (48) is fixedly installed on the front side of the filter plate (47); a slot (481) is provided on the water storage tank (41); a plug rod (482) passes through the fixing plate (48); the plug rod (482) is slidably connected to the fixing plate (48); the plug rod (482) is adapted to the slot (481); the plug rod (482) is slidably connected to the inner wall of the slot (481); a connecting block (483) is fixedly installed on one end of the plug rod (482) away from the fixing plate (48); a second spring (484) is fixedly installed between the connecting block (483) and the fixing plate (48); the second spring (484) is sleeved on the plug rod (482); and a pull ring (485) is fixedly installed on the front side of the connecting block (483).

8. The waste gas filtering device for producing pharmaceutical intermediates according to claim 1, characterized in that: A plurality of support rods (5) are fixedly installed between the connecting tube (23) and the reaction kettle (21).

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