A collecting device for collecting volatile harmful substances in a kettle

Abstract

The present application relates to the technical field of volatile harmful substance collection, and particularly relates to a collecting device for collecting volatile harmful substances in a kettle, comprising a ring-shaped shell and a collecting box arranged below the ring-shaped shell, the bottom end of the collecting box is provided with a liquid discharge pipe, the liquid discharge pipe is provided with a valve, a spiral blade and a condenser pipe are fixedly connected in the ring-shaped shell, the outer edge and the inner edge of the spiral blade are fixedly connected with the inner wall of the ring-shaped shell, and the adjacent layers of the spiral blade and the inner wall of the ring-shaped shell jointly form a spiral channel spirally along the axial direction of the ring-shaped shell; the cooling water entering through the liquid inlet pipe flows along the spiral path, the heat exchange stroke of the cooling water and the condenser pipe is prolonged, the cooling uniformity and the heat exchange efficiency of the condenser pipe are improved, so that the harmful substances can be fully condensed and liquefied when flowing through the condenser pipe.

Description

Technical Field

[0001] This invention relates to the field of volatile hazardous substance collection technology, and in particular to a collection device for collecting volatile hazardous substances inside a vessel. Background Technology

[0002] In chemical, pharmaceutical, and laboratory production or testing processes, volatile and harmful substances (such as organic vapors and acidic gases) are often generated inside reaction vessels due to heating or reactions. To reduce environmental pollution and protect the health of operators, collection devices are usually used to recover and treat these harmful volatile substances.

[0003] Existing collection devices commonly use straight-tube condensers combined with natural cooling or passive ventilation. One end of the condenser is connected to the exhaust port of the reactor, and the other end is inserted into a collection bottle. The harmful substances are then propelled towards the condenser by gas diffusion or positive pressure within the reactor for condensation. However, these existing devices have shortcomings. The heat exchange path of the straight-tube condenser is relatively short, resulting in insufficient heat exchange between the cooling medium and the condensed gas. This causes some harmful substances to be discharged in gaseous form without condensation, leading to low collection efficiency.

[0004] Therefore, in order to solve the above problems, a more suitable facility that meets the needs of users is needed. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a collection device for collecting volatile harmful substances in a vessel, so as to solve the problem that the heat exchange path of the above-mentioned straight tube condenser is short and the heat exchange between the cooling medium and the condensed gas is insufficient.

[0006] To achieve the above objectives, the present invention provides a collection device for collecting volatile harmful substances in a vessel, comprising an annular shell and a collection box disposed below the annular shell. The bottom end of the collection box is provided with a drain pipe and a valve. A spiral blade and a condenser are fixedly connected inside the annular shell. The outer and inner edges of the spiral blade are fixedly connected to the inner wall of the annular shell, and adjacent layers of the spiral blade together with the inner wall of the annular shell form a spiral channel that spirals along the axial direction of the annular shell. The condenser is spirally disposed inside the spiral channel, and the air inlet and liquid outlet of the condenser extend to the outside of the annular shell. The top end of the annular shell is provided with a liquid inlet pipe connected to the starting end of the spiral channel, and the bottom end of the annular shell is provided with a liquid outlet pipe connected to the ending end of the spiral channel. An air pump is fixedly connected to the annular shell. The air inlet end of the air pump and the liquid outlet end of the condenser are both fixedly connected to the insertion tube. A communication structure for connecting the insertion tube to the inside of the collection box is installed on the collection box. An adjustable support structure for adjusting the height of the annular shell relative to the collection box is installed on the collection box. The air pump is used to draw harmful volatile substances from the external reaction vessel into the condenser tube through the air inlet end of the condenser tube. The liquid harmful substances formed by condensation in the condenser tube flow into the collection box through the liquid outlet end of the condenser tube, the insertion tube and the connecting structure. The liquid inlet pipe is used to introduce cooling medium into the spiral channel. After the cooling medium flows along the spiral channel, it is discharged through the liquid outlet pipe to achieve cyclic cooling of the condenser tube.

[0007] Optionally, the connecting structure includes two movable tubes disposed above the collection box, the bottom end of the movable tubes extending into the collection box, the top of the movable tubes having slots, the bottom ends of the two inserts respectively located in the two slots, and the collection box being equipped with elastic elements that cooperate with the movable tubes.

[0008] Optionally, a sealing ring is fixedly connected to the bottom of the inner wall of the slot, and the bottom end of the insertion tube contacts the top of the sealing ring. Two sealing sleeves are fixedly connected to the top of the collection box, and the two sealing sleeves are respectively fitted over the outside of the two movable tubes.

[0009] Optionally, the elastic element includes two support plates fixedly installed on the movable tube, with a support column passing through the support plate. The bottom end of the support column is fixedly connected to the top of the collection box, and a fixing plate is fixedly connected to the top end of the support column. A compression spring is sleeved on the outside of the support column, and the two ends of the compression spring are fixedly connected to the bottom of the support plate and the top of the collection box, respectively.

[0010] Optionally, the adjustable support structure includes several lead screws disposed between the collection box and the annular shell. The lead screws are threaded with threaded sleeves, the bottom end of which is fixedly connected to the top of the collection box. The top end of the lead screws is fixedly connected to a support plate, and the top of the support plate is in contact with the bottom of the annular shell. The bottom of the annular shell is fixedly connected to two first prisms, and the outer side of each first prism is slidably fitted with a support sleeve. The bottom end of the support sleeve is fixedly connected to the top of the collection box. A locking unit that cooperates with the first prisms is installed on the collection box.

[0011] Optionally, the locking unit includes a control housing fixedly installed on the top of the collection box. The control housing has two sliding plates, and each of the two sliding plates is fixedly connected to a first toothed plate located outside the control housing at one end away from the other. A rectangular hole that mates with the first toothed plate is opened on the inner wall of the support sleeve, and the first toothed plate is slidably installed in the rectangular hole. A groove is opened on the first prism, and a second toothed plate that meshes with the first toothed plate is fixedly connected in the groove. A driver that mates with the sliding plates is installed in the control housing.

[0012] Optionally, the driver includes a rotating shaft disposed within a control housing, the bottom end of the rotating shaft being rotatably connected to the top end of the collection box, the top end of the rotating shaft extending above the control housing, a turntable being fixedly sleeved on the outside of the rotating shaft, two fixed posts being fixedly connected to the top of the turntable, rectangular rings being slidably sleeved on the outside of the fixed posts, and the two rectangular rings being fixedly connected to two sliding plates respectively.

[0013] Optionally, the top of the rotating shaft is provided with a movable disk, and a sliding groove is opened on the top of the rotating shaft. A second prism is slidably arranged in the sliding groove. The bottom end of the second prism is connected to the bottom of the inner wall of the sliding groove by a tension spring. The top end of the second prism is fixedly connected to the movable disk. A number of insertion holes are opened on the top of the inner wall of the control housing. Insertion pins are provided in the insertion holes, and the top of the insertion pins is fixedly connected to the bottom of the movable disk.

[0014] The beneficial effects of this invention are as follows: The spiral channel formed by the inner wall of the annular shell and the adjacent layers of the spiral blades allows cooling water entering through the inlet pipe to flow along a spiral path, extending the heat exchange path between the cooling water and the condenser tube. This improves the cooling uniformity and heat exchange efficiency of the condenser tube, ensuring that harmful substances are fully condensed and liquefied when flowing through it. The air pump creates negative pressure at the inlet of the condenser tube, actively drawing harmful substances volatilized from the reactor into the condenser tube, preventing accumulation and improving the timeliness and thoroughness of collection. The connection between the insertion tube and the collection box allows the condensed liquid harmful substances to be directly discharged into the collection box through the corresponding insertion tube. Centralized discharge is achieved by opening the valve on the drain pipe, eliminating the need for manual intervention and significantly improving the ease of operation and safety of the collection device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the annular shell according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the elastic element in an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of the active tube in an embodiment of the present invention; Figure 5 This is a schematic diagram of the disassembled first prism and support sleeve according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the internal structure of the control shell according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the disassembled structure of the second prism and the pivot axis according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the overall structure of the control shell according to an embodiment of the present invention.

[0017] The diagram is marked as follows: 1. Annular shell; 2. Collection box; 3. Drain pipe; 4. Condenser pipe; 5. Spiral blade; 6. Inlet pipe; 7. Outlet pipe; 8. Air pump; 9. Insert pipe; 10. Movable pipe; 11. Slot; 12. Sealing ring; 13. Support plate; 14. Support column; 15. Fixed plate; 16. Compression spring; 17. Sealing sleeve; 18. Support plate; 19. Lead screw; 20. Threaded sleeve; 21. First prism; 22. Support sleeve; 23. Control shell; 24. Slide plate; 25. First toothed plate; 26. Rectangular hole; 27. Groove; 28. Second toothed plate; 29. ​​Rotating shaft; 30. Turntable; 31. Fixed column; 32. Rectangular ring; 33. Second prism; 34. Slide groove; 35. Tension spring; 36. Insert post; 37. Insertion hole; 38. Movable plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0019] Example 1, by Figure 1 and Figure 2 The present invention includes an annular shell 1 and a collection box 2 disposed below the annular shell 1. The bottom end of the collection box 2 is provided with a drain pipe 3, and a valve is provided on the drain pipe 3. A spiral blade 5 and a condenser tube 4 are fixedly connected inside the annular shell 1. The outer edge and inner edge of the spiral blade 5 are fixedly connected to the inner wall of the annular shell 1, and the adjacent layers of the spiral blade 5 together with the inner wall of the annular shell 1 form a spiral channel that spirals along the axis of the annular shell 1. The condenser tube 4 is spirally disposed inside the spiral channel, and the air inlet end and liquid outlet end of the condenser tube 4 extend to the outside of the annular shell 1. The top end of the annular shell 1 is provided with a liquid inlet pipe 6 connected to the starting end of the spiral channel, and the bottom end of the annular shell 1 is provided with a liquid outlet pipe 7 connected to the ending end of the spiral channel. An air pump 8 is fixedly connected to the annular shell 1. The air inlet end of the air pump 8 and the liquid outlet end of the condenser tube 4 are both fixedly connected to the insertion tube 9. A communication structure for connecting the insertion tube 9 to the inside of the collection box 2 is installed on the collection box 2. An adjustable support structure for adjusting the height of the annular shell 1 relative to the collection box 2 is installed on the collection box 2. The air pump 8 is used to draw harmful volatile substances from the external reactor into the condenser tube 4 through the air inlet. The liquid harmful substances formed by condensation in the condenser tube 4 flow into the collection box 2 through the liquid outlet of the condenser tube 4, the insertion tube 9, and the connecting structure. The liquid inlet pipe 6 is used to introduce cooling medium into the spiral channel. After flowing along the spiral channel, the cooling medium is discharged through the liquid outlet pipe 7 to achieve circulating cooling of the condenser tube 4. The operator connects the air inlet of the condenser tube 4 to the exhaust end of the external reactor through a hose. Circulating cooling water is added into the annular shell 1 through the liquid inlet pipe 6. The cooling water flows in the spiral channel and is finally discharged through the liquid outlet pipe 7. The cooling water cools the condenser tube 4. The air pump 8 is started, and the harmful substances volatilized from the external reactor enter the condenser tube 4 through the hose. The harmful substances and water vapor in the condenser tube 4 are recondensed into liquid. The liquid is discharged into the collection box 2 through the condenser tube 4 and the corresponding insertion tube 9.

[0020] Example 2, based on Example 1, is... Figure 1 , Figure 3 and Figure 4 The connecting structure includes two movable tubes 10 disposed above the collection box 2. The bottom end of the movable tube 10 extends into the collection box 2, and the top of the movable tube 10 is provided with a slot 11. The bottom ends of two insertion tubes 9 are respectively located in the two slots 11. An elastic element that cooperates with the movable tube 10 is installed on the collection box 2. A sealing ring 12 is fixedly connected to the bottom of the inner wall of the slot 11, and the bottom end of the insertion tube 9 is in contact with the top of the sealing ring 12. Two sealing sleeves 17 are fixedly connected to the top of the collection box 2, and the two sealing sleeves 17 are respectively fitted on the outside of the two movable tubes 10. The elastic element includes two support plates 13 fixedly installed on the movable tube 10. A support column 14 passes through the support plate 13. The bottom end of the support column 14 is fixedly connected to the top of the collection box 2. A fixed plate 15 is fixedly connected to the top of the support column 14. A compression spring 16 is fitted on the outside of the support column 14, and the two ends of the compression spring 16 are fixedly connected to the bottom of the support plate 13 and the top of the collection box 2, respectively. The operator adjusts the height of the annular shell 1 using the adjustable support structure. The annular shell 1 drives the condenser tube 4, the air pump 8, and the insertion tube 9 to move vertically, so that the bottom ends of the two insertion tubes 9 are inserted into the two slots 11 respectively. The bottom ends of the insertion tubes 9 abut against the top of the sealing ring 12. As the annular shell 1 and the insertion tubes 9 continue to move downward, the insertion tubes 9 push the movable tube 10 and the support plate 13 downward. The compression spring 16 is in a compressed state. The compression spring 16 applies an upward force to the support plate 13 and the movable tube 10, so that the bottom ends of the insertion tubes 9 and the top of the sealing ring 12 are tightly attached. The design of the sealing sleeve 17 increases the sealing performance at the point where the movable tube 10 and the collection box 2 pass through. By adjusting the height of the annular shell 1 using the adjustable support structure, the operator can change the height of the movable tube 10 and the support plate 13, and thus adjust the upward pressure applied by the compression spring 16 to the support plate 13 and the movable tube 10.

[0021] Example 3, based on Example 1, is... Figure 1 , Figure 5 , Figure 6 , Figure 7 and Figure 8The adjustable support structure includes several lead screws 19 disposed between the collection box 2 and the annular shell 1. A threaded sleeve 20 is threaded onto the outer side of each lead screw 19. The bottom end of the threaded sleeve 20 is fixedly connected to the top of the collection box 2. A support plate 18 is fixedly connected to the top of each lead screw 19, and the top of the support plate 18 contacts the bottom of the annular shell 1. Two first prisms 21 are fixedly connected to the bottom of the annular shell 1. A support sleeve 22 is slidably fitted onto the outer side of each first prism 21. The bottom end of the support sleeve 22 is connected to the top of the collection box 2. A locking unit is installed on the collection box 2 to cooperate with the first prism 21. The locking unit includes a control shell 23 fixedly installed on the top of the collection box 2. The control shell 23 has two sliding plates 24. The ends of the two sliding plates 24 that are far apart are fixedly connected to a first toothed plate 25 located outside the control shell 23. A rectangular hole 26 is opened on the inner wall of the support sleeve 22 to cooperate with the first toothed plate 25, and the first toothed plate 25 is slidably installed in the rectangular hole 26. A groove 27 is opened on the first prism 21. A second toothed plate 28, which meshes with the first toothed plate 25, is fixedly connected inside the control housing 27. A driver that cooperates with the slide plate 24 is installed inside the control housing 23. The driver includes a rotating shaft 29 disposed inside the control housing 23. The bottom end of the rotating shaft 29 is rotatably connected to the top end of the collection box 2. The top end of the rotating shaft 29 extends to the top of the control housing 23. A turntable 30 is fixedly sleeved on the outside of the rotating shaft 29. Two fixed posts 31 are fixedly connected to the top of the turntable 30. A rectangular ring 32 is slidably sleeved on the outside of the fixed posts 31. The ring 32 is fixedly connected to two slide plates 24 respectively. The top of the rotating shaft 29 is provided with a movable disk 38. The top of the rotating shaft 29 is provided with a slide groove 34. A second prism 33 is slidably provided in the slide groove 34. The bottom end of the second prism 33 and the bottom of the inner wall of the slide groove 34 are connected by a tension spring 35. The top of the second prism 33 and the movable disk 38 are fixedly connected. The top of the inner wall of the control housing 23 is provided with several insertion holes 37. Insertion posts 36 are provided in the insertion holes 37, and the top of the insertion posts 36 and the bottom of the movable disk 38 are fixedly connected. The operator drives the movable disk 38 to move upward, the second prism 33 slides relative to the slide groove 34, the tension spring 35 is in a stretched state, and the insertion post 36 disengages from the corresponding insertion hole 37, releasing the restriction on the position of the movable disk 38. The operator drives the movable disk 38 to rotate, and the movable disk 38 drives the rotating shaft 29 and the turntable 30 to rotate via the second prism 33. The turntable 30 drives the fixed post 31 to slide within the rectangular ring 32, and the rectangular ring 32 drives the sliding plate 24 and the first toothed plate 25 to move, so that the first toothed plate 25 no longer meshes with the second toothed plate 28, releasing the restriction on the position of the first prism 21 and the annular shell 1. The operator drives the support plate 18 and the lead screw 19 to rotate relative to the threaded sleeve 20, changing the initial height of several support plates 18, thereby changing the position of the movable disk 38. The height of the annular shell 1 is adjusted so that the first prism 21 can slide vertically relative to the support sleeve 22. After the height of the annular shell 1 is adjusted, the operator drives the movable disk 38 to rotate in the opposite direction, which causes the slide plate 24 to drive the first toothed plate 25 to move in the opposite direction, so that the first toothed plate 25 can engage with the second toothed plate 28 again. The first prism 21 is fixed relative to the support sleeve 22 to prevent the annular shell 1 from shaking vertically relative to the support plate 18. Then the operator releases the movable disk 38, and the tension spring 35 drives the second prism 33 and the movable disk 38 to move down so that the insertion post 36 can be inserted into the corresponding insertion hole 37. Through the design of the insertion post 36 and the insertion hole 37, the movable disk 38 and the rotating shaft 29 are prevented from rotating relative to the collection box 2 due to non-human factors.

[0022] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

Claims

1. A collection device for collecting volatile harmful substances inside a vessel, comprising an annular shell (1) and a collection box (2) disposed below the annular shell (1), characterized in that, The bottom of the collection box (2) is provided with a drain pipe (3), and a valve is provided on the drain pipe (3). The annular shell (1) is fixedly connected with a spiral blade (5) and a condenser (4). The outer edge and inner edge of the spiral blade (5) are fixedly connected to the inner wall of the annular shell (1). The adjacent layers of the spiral blade (5) together with the inner wall of the annular shell (1) form a spiral channel that spirals along the axis of the annular shell (1). The condenser (4) is spirally arranged in the spiral channel. The air inlet and liquid outlet of the condenser (4) extend to the outside of the annular shell (1). The top of the annular shell (1) is provided with a liquid inlet pipe (6) that is connected to the starting end of the spiral channel. The bottom of the annular shell (1) is provided with a liquid outlet pipe (7) that is connected to the ending end of the spiral channel. An air pump (8) is fixedly connected to the annular shell (1). The air inlet end of the air pump (8) and the liquid outlet end of the condenser (4) are both fixedly connected to the insertion tube (9). A communication structure for connecting the insertion tube (9) to the inside of the collection box (2) is installed on the collection box (2). An adjustable support structure for adjusting the height of the annular shell (1) relative to the collection box (2) is installed on the collection box (2). The air pump (8) is used to draw harmful volatile substances from the external reactor into the condenser tube (4) through the air inlet end of the condenser tube (4). The liquid harmful substances formed by condensation in the condenser tube (4) flow into the collection box (2) through the liquid outlet end of the condenser tube (4), the insertion tube (9) and the connecting structure. The liquid inlet pipe (6) is used to introduce cooling medium into the spiral channel. After the cooling medium flows along the spiral channel, it is discharged through the liquid outlet pipe (7) to achieve the circulating cooling of the condenser tube (4).

2. The collection device for collecting volatile harmful substances in a vessel according to claim 1, characterized in that, The connecting structure includes two movable tubes (10) disposed above the collection box (2). The bottom end of the movable tube (10) extends into the collection box (2). The top of the movable tube (10) is provided with a slot (11). The bottom ends of the two inserts (9) are respectively located in the two slots (11). An elastic element that cooperates with the movable tube (10) is installed on the collection box (2).

3. The collection device for collecting volatile harmful substances in a vessel according to claim 2, characterized in that, A sealing ring (12) is fixedly connected to the bottom of the inner wall of the slot (11), and the bottom end of the insertion tube (9) is in contact with the top of the sealing ring (12). Two sealing sleeves (17) are fixedly connected to the top of the collection box (2), and the two sealing sleeves (17) are respectively fitted on the outside of the two movable tubes (10).

4. The collection device for collecting volatile harmful substances in a vessel according to claim 2, characterized in that, The elastic element includes two support plates (13) fixedly installed on the movable tube (10). A support column (14) runs through the support plate (13). The bottom end of the support column (14) is fixedly connected to the top of the collection box (2). A fixed plate (15) is fixedly connected to the top of the support column (14). A compression spring (16) is sleeved on the outside of the support column (14), and the two ends of the compression spring (16) are fixedly connected to the bottom of the support plate (13) and the top of the collection box (2) respectively.

5. The collection device for collecting volatile harmful substances in a vessel according to claim 1, characterized in that, The adjustable support structure includes several lead screws (19) disposed between the collection box (2) and the annular shell (1). The lead screws (19) are threaded with threaded sleeves (20). The bottom end of the threaded sleeves (20) is fixedly connected to the top of the collection box (2). The top end of the lead screws (19) is fixedly connected to a support plate (18). The top end of the support plate (18) is in contact with the bottom of the annular shell (1). The bottom of the annular shell (1) is fixedly connected to two first prisms (21). The outside of the first prisms (21) is slidably fitted with support sleeves (22). The bottom end of the support sleeves (22) is fixedly connected to the top of the collection box (2). The collection box (2) is equipped with a locking unit that cooperates with the first prisms (21).

6. The collection device for collecting volatile harmful substances inside a vessel according to claim 5, characterized in that, The locking unit includes a control housing (23) fixedly installed on the top of the collection box (2). The control housing (23) has two sliding plates (24). The ends of the two sliding plates (24) that are far apart are fixedly connected to a first toothed plate (25) located outside the control housing (23). The inner wall of the support sleeve (22) has a rectangular hole (26) that matches the first toothed plate (25). The first toothed plate (25) is slidably installed in the rectangular hole (26). The first prism (21) has a groove (27). The groove (27) has a second toothed plate (28) that meshes with the first toothed plate (25) fixedly connected to it. The control housing (23) has a driver that matches the sliding plate (24).

7. The collection device for collecting volatile harmful substances in a vessel according to claim 6, characterized in that, The driver includes a rotating shaft (29) disposed in the control housing (23). The bottom end of the rotating shaft (29) is rotatably connected to the top end of the collection box (2). The top end of the rotating shaft (29) extends above the control housing (23). A turntable (30) is fixedly sleeved on the outside of the rotating shaft (29). Two fixed posts (31) are fixedly connected to the top of the turntable (30). A rectangular ring (32) is slidably sleeved on the outside of the fixed post (31), and the two rectangular rings (32) are fixedly connected to two sliding plates (24) respectively.

8. The collection device for collecting volatile harmful substances in a vessel according to claim 7, characterized in that, The top of the rotating shaft (29) is provided with a movable disk (38), and the top of the rotating shaft (29) is provided with a sliding groove (34). A second prism (33) is slidably provided in the sliding groove (34). The bottom end of the second prism (33) and the bottom of the inner wall of the sliding groove (34) are connected by a tension spring (35). The top of the second prism (33) and the movable disk (38) are fixedly connected. The top of the inner wall of the control housing (23) is provided with several insertion holes (37). Insertion posts (36) are provided in the insertion holes (37), and the top of the insertion posts (36) and the bottom of the movable disk (38) are fixedly connected.

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