Rectifying tower with waste liquid recycling function

Abstract

The utility model discloses a rectifying tower with a waste liquid recovery function, which comprises a tower body, a fixing frame is fixedly arranged on the outer side of the lower end of the tower body, a liquid outlet is fixedly arranged at the middle position of the lower end of the tower body, a liquid outlet pipe is arranged below the liquid outlet, and a filter tank is fixedly arranged at the other end of the liquid outlet pipe. A positioning groove is formed in the filtering tank, a filtering mechanism is arranged in the positioning groove, the filtering mechanism is in sliding fit with the positioning groove, a liquid inlet pipe is arranged on one side of the exterior of the filtering tank, one end of the liquid inlet pipe extends into the filtering tank, and a spraying disc is fixedly arranged on the side, located in the filtering tank, of the liquid inlet pipe; the spraying disc is communicated with the liquid inlet pipe and corresponds to the filtering mechanism in position, and the structure solves the problems that the filtering mechanism is easily blocked by impurities in the waste liquid, and the waste liquid is difficult to cool.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation towers, in particular to a distillation tower with the function of recycling waste liquid. Background Art

[0002] A distillation tower is a tower-type gas-liquid contact device that performs distillation operations. Its operating principle is based on the different volatilities of the components in a mixture—that is, the different vapor pressures of the components at the same temperature. By heating the mixture, the light components in the liquid phase vaporize and transfer to the gas phase, while the heavy components in the gas phase condense and transfer to the liquid phase, thereby separating and purifying the mixture. A distillation tower typically consists of a tower body, trays, condenser, reflux drum, and reboiler. Recovering waste liquid is a key function of a distillation tower.

[0003] For example, the Chinese patent "A Distillation Tower" with announcement number CN214105867U includes a tower body, wherein the tower body is provided with multiple layers of tower plates, and multiple sieve holes are evenly provided on the tower plates. An overflow weir is provided at one end of the tower plate, and a downflow channel is provided on one side of the overflow weir. The two overflow weirs on two adjacent tower plates are respectively located at opposite ends of the two tower plates; a gas inlet is provided on the side wall of the tower body below the bottom tower plate, a gas outlet is provided on the top of the tower body, a liquid outlet is provided on the bottom of the tower body, a reflux liquid inlet is provided on the side wall of the tower body above the top tower plate, and a feed port is provided in the middle of the tower body.

[0004] Although the above-mentioned existing technology can realize the recycling of waste liquid, in actual use, on the one hand, impurities in the waste liquid can easily cause the filter mechanism to be blocked. During the filtration process, the impurities in the waste liquid are intercepted by the filter mechanism, causing the impurities to cause the mesh holes on the filter mechanism to be blocked, thereby affecting the filtration effect. On the other hand, the waste liquid is difficult to cool. When the waste liquid is recycled, the waste liquid is directly passed through the filter structure, resulting in high-temperature waste liquid directly contacting the filter mechanism and causing damage to it, thereby shortening the service life of the filter mechanism. Therefore, it does not meet the existing needs. In this regard, we propose a distillation tower with the function of recycling waste liquid. Summary of the Invention

[0005] The purpose of the utility model is to provide a distillation tower with the function of recovering waste liquid, so as to solve the problems proposed in the above background technology that impurities in the waste liquid easily cause clogging of the filtering mechanism and the waste liquid is difficult to cool.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a distillation tower with the function of recycling waste liquid, comprising a tower body, a fixed frame is fixedly provided on the outer side of the lower end of the tower body, a liquid outlet is fixedly provided at the middle position of the lower end of the tower body, a liquid outlet pipe is provided below the liquid outlet, a filter tank is fixedly provided on the other end of the liquid outlet pipe, a positioning groove is provided inside the filter tank, a filtering mechanism is provided inside the positioning groove, the filtering mechanism slides with the positioning groove, a liquid inlet pipe is provided on one side outside the filter tank, one end of the liquid inlet pipe extends to the interior of the filter tank, the liquid inlet pipe is rotatably connected to the filter tank, a spray plate is fixedly provided on one side of the liquid inlet pipe located inside the filter tank, the spray plate is connected to the liquid inlet pipe, and the position of the spray plate corresponds to that of the filtering mechanism.

[0007] Preferably, a drainage pipe is fixedly provided on one side of the filter tank below the liquid inlet pipe, a water pump is fixedly provided on the other end of the drainage pipe, the water pump is connected to the drainage pipe, a connecting pipe is fixedly provided on the other end of the water pump, a water tank is fixedly provided on the other end of the connecting pipe, and both ends of the connecting pipe are connected to the water pump and the water tank respectively.

[0008] Preferably, a liquid distributing tube is fixedly provided on one side of the exterior of the connecting tube, and both ends of the liquid distributing tube are respectively connected to the liquid inlet tube and the connecting tube.

[0009] Preferably, a motor is fixedly provided on one side of the filter tank above the liquid inlet pipe, a driving gear is fixedly provided on the outside of the motor output shaft, a transmission gear is fixedly provided on the outside of the liquid inlet pipe, and the transmission gear is meshed and connected with the driving gear.

[0010] Preferably, a cooling pipe is provided on the outside of the liquid outlet pipe, a water outlet is fixedly provided on the upper side of one side of the outside of the cooling pipe, and a water inlet is fixedly provided on the lower side of the other side of the outside of the cooling pipe. The water inlet and the water outlet are both connected to the cooling pipe, and a bracket is fixedly provided at the middle position of the outside of the cooling pipe.

[0011] Preferably, a valve is fixedly provided at the connection between the other side of the exterior of the connecting pipe and the liquid outlet and the liquid outlet pipe.

[0012] Preferably, an air outlet is fixedly provided at the upper end of the tower body, a reflux liquid inlet is fixedly provided above one side of the tower body, a feed port is fixedly provided at the middle position of one side of the tower body, and a gas inlet is fixedly provided at the lower side of one side of the tower body. The gas inlet, feed port, reflux liquid inlet and air outlet are all connected to the tower body.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model can backflush and clean the filter screen inside the filter mechanism through the spray plate and the liquid inlet pipe. When the backflush operation is performed, the valve on the connecting pipe is adjusted to keep the valve in a state that is not fully opened. At this time, the water pump is turned on to pump the waste liquid in the filter pool, thereby accelerating the filtration of the waste liquid. The filtered waste liquid enters the water pump through the discharge pipe and then enters the connecting pipe from the other end of the water pump. At this time, part of the waste liquid in the connecting pipe flows into the water tank, and the other part of the waste liquid flows into the liquid inlet pipe through the liquid separation pipe. At this time, the waste liquid flowing into the liquid inlet pipe is sprayed out through the spray plate, and the formed liquid column backflushes the mesh structure on the filter mechanism, thereby reducing the blockage of the filter mechanism caused by impurities, thereby improving the filtering effect of the filter mechanism.

[0015] 2. The utility model can cool the waste liquid through the cooling pipe and the water inlet. When the waste liquid is recovered, the valve on the liquid outlet is opened. At this time, the waste liquid flows into the liquid outlet pipe through the liquid outlet, and the heat in the waste liquid is transferred to the wall of the liquid outlet pipe with a lower temperature. At the same time as the waste liquid passes through the liquid outlet pipe, clean water is poured into the cooling pipe through the water inlet. At this time, the clean water entering the cooling pipe contacts the wall of the liquid outlet pipe. The liquid outlet pipe with a higher temperature transfers the heat on the wall to the clean water. At this time, the clean water that absorbs the heat is discharged from the cooling pipe through the water outlet. The waste liquid is cooled by the clean water, thereby avoiding direct contact of the high-temperature waste liquid with the filtering mechanism, thereby extending the service life of the filtering mechanism.

[0016] 3. The utility model can make the recoil cleaning more uniform through the driving gear and the transmission gear. When performing recoil cleaning, the motor is turned on, and the output shaft of the motor drives the driving gear to rotate. At this time, the transmission gear engaged with the driving gear rotates together, and the liquid inlet pipe and the spray disc are driven to rotate together through the transmission gear. At this time, the rotating spray disc sprays out the filtered waste liquid, thereby increasing the waste liquid spraying area and making the spraying more uniform, thereby improving the recoil cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of the overall structure of the utility model;

[0018] Figure 2 This is a side view of the filtering structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the cooling structure of the utility model;

[0020] Figure 4 For the utility model Figure 1 A partial enlarged view of area A in the middle.

[0021] In the figure: 1. Tower body; 2. Feed inlet; 3. Fixing frame; 4. Gas outlet; 5. Reflux liquid inlet; 6. Gas inlet; 7. Liquid outlet; 8. Valve; 9. Liquid outlet pipe; 10. Cooling pipe; 11. Bracket; 12. Water inlet; 13. Water outlet; 14. Filter tank; 15. Positioning groove; 16. Filter mechanism; 17. Drive gear; 18. Transmission gear; 19. Spray disc; 20. Drain pipe; 21. Water pump; 22. Water tank; 23. Connecting pipe; 24. Liquid distribution pipe; 25. Liquid inlet pipe; 26. Motor. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] See also Figure 1-4 The utility model provides an embodiment of a distillation tower with a waste liquid recovery function, comprising a tower body 1, a fixing frame 3 is fixedly provided on the outer side of the lower end of the tower body 1, a liquid outlet 7 is fixedly provided at the middle position of the lower end of the tower body 1, a liquid outlet pipe 9 is provided below the liquid outlet 7, a filter tank 14 is fixedly provided at the other end of the liquid outlet pipe 9, a positioning groove 15 is provided inside the filter tank 14, a filtering mechanism 16 is provided inside the positioning groove 15, and the filtering mechanism 16 slides with the positioning groove 15, and a liquid inlet pipe 25 is provided on one side outside the filter tank 14, one end of the liquid inlet pipe 25 extends to the interior of the filter tank 14, and the liquid inlet pipe 25 is rotatably connected to the filter tank 14, and a spray plate 19 is fixedly provided on one side of the liquid inlet pipe 25 located inside the filter tank 14, the spray plate 19 is communicated with the liquid inlet pipe 25, and the position of the spray plate 19 corresponds to that of the filtering mechanism 16.

[0024] During use, when backflushing is performed, the valve 8 on the connecting pipe 23 is adjusted so that the valve 8 remains in a partially opened state. At this time, the water pump 21 is turned on to extract the waste liquid in the filter tank 14, thereby accelerating the filtration of the waste liquid. The filtered waste liquid enters the water pump 21 through the drain pipe 20 and then enters the connecting pipe 23 from the other end of the water pump 21. At this time, a part of the waste liquid in the connecting pipe 23 flows into the water tank 22, and the other part of the waste liquid flows into the liquid inlet pipe 25 through the liquid separator 24. At this time, the waste liquid flowing into the liquid inlet pipe 25 is sprayed out through the spray plate 19, and the formed liquid column performs backflushing treatment on the mesh structure on the filter mechanism 16.

[0025] See also Figure 1A drainage pipe 20 is fixedly provided on one side of the filter tank 14 below the liquid inlet pipe 25, and a water pump 21 is fixedly provided on the other end of the drainage pipe 20. The water pump 21 is connected to the drainage pipe 20, and a connecting pipe 23 is fixedly provided on the other end of the water pump 21. A water tank 22 is fixedly provided on the other end of the connecting pipe 23. The two ends of the connecting pipe 23 are respectively connected to the water pump 21 and the water tank 22, so as to facilitate the extraction of waste liquid from the filter tank 14 through the water pump 21.

[0026] See also Figure 1 and Figure 4 A liquid separation pipe 24 is fixedly provided on one side of the outside of the connecting pipe 23. The two ends of the liquid separation pipe 24 are respectively connected to the liquid inlet pipe 25 and the connecting pipe 23, so that the filtered waste liquid can flow back to the liquid inlet pipe 25 through the liquid separation pipe 24.

[0027] See also Figure 1 、 Figure 2 and Figure 4 A motor 26 is fixedly provided on one side of the filter tank 14 above the liquid inlet pipe 25, a driving gear 17 is fixedly provided on the outside of the output shaft of the motor 26, and a transmission gear 18 is fixedly provided on the outside of the liquid inlet pipe 25. The transmission gear 18 is meshed and connected with the driving gear 17, so that the liquid inlet pipe 25 can be driven to rotate by the motor 26.

[0028] See also Figure 1 and Figure 3 A cooling pipe 10 is provided on the outside of the liquid outlet pipe 9, a water outlet 13 is fixedly provided on the upper side of one side of the outside of the cooling pipe 10, and a water inlet 12 is fixedly provided on the lower side of the other side of the outside of the cooling pipe 10. The water inlet 12 and the water outlet 13 are both connected to the cooling pipe 10, and a bracket 11 is fixedly provided at the middle position of the outside of the cooling pipe 10, so as to facilitate the cooling treatment of the waste liquid passing through the liquid outlet pipe 9 through the cooling pipe 10.

[0029] See also Figure 1 A valve 8 is fixedly provided at the connection between the other side of the connecting pipe 23 and the liquid outlet 7 and the liquid outlet pipe 9, so as to facilitate adjusting the opening state of the connecting pipe 23 through the valve 8.

[0030] See also Figure 1 A gas outlet 4 is fixedly provided at the upper end of the tower body 1, a reflux liquid inlet 5 is fixedly provided above one side of the tower body 1, a feed port 2 is fixedly provided at the middle position of one side of the tower body 1, and a gas inlet 6 is fixedly provided at the lower part of one side of the tower body 1. The gas inlet 6, the feed port 2, the reflux liquid inlet 5 and the gas outlet 4 are all connected with the tower body 1, so that the raw materials can be placed into the tower body 1 through the feed port 2.

[0031] Working principle: When waste liquid is recovered, the valve 8 on the liquid outlet 7 is opened. At this time, the waste liquid flows into the liquid outlet pipe 9 through the liquid outlet 7, and the heat in the waste liquid is transferred to the wall of the liquid outlet pipe 9 with lower temperature. At the same time as the waste liquid passes through the liquid outlet pipe 9, clean water is poured into the cooling pipe 10 through the water inlet 12. At this time, the clean water entering the cooling pipe 10 contacts the wall of the liquid outlet pipe 9, and the liquid outlet pipe 9 with higher temperature transfers the heat on the wall to the clean water. At this time, the clean water that absorbs the heat is discharged from the cooling pipe 10 through the water outlet 13. The waste liquid is cooled by the clean water. When backflushing cleaning is performed, the motor 26 is turned on, so that the output shaft of the motor 26 drives the drive gear 17 to rotate. At this time, the transmission gear 18 meshing with the drive gear 17 rotates together, and the liquid inlet pipe 25 and the spray disc 19 are driven to rotate together through the transmission gear 18. At this time, the rotating spray disc 19 sprays out the waste liquid that has been filtered.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A distillation tower with a waste liquid recovery function, comprising a tower body (1), wherein a fixing frame (3) is fixedly provided on the outer side of the lower end of the tower body (1), characterized in that: A liquid outlet (7) is fixedly provided at the middle position of the lower end of the tower body (1), a liquid outlet pipe (9) is provided below the liquid outlet (7), a filter pool (14) is fixedly provided at the other end of the liquid outlet pipe (9), a positioning groove (15) is provided inside the filter pool (14), a filter mechanism (16) is provided inside the positioning groove (15), and the filter mechanism (16) and the positioning groove (15) are slidably matched, a liquid inlet pipe (25) is provided on one side outside the filter pool (14), one end of the liquid inlet pipe (25) extends to the inside of the filter pool (14), the liquid inlet pipe (25) is rotatably connected to the filter pool (14), a spray disc (19) is fixedly provided on one side of the liquid inlet pipe (25) located inside the filter pool (14), the spray disc (19) is communicated with the liquid inlet pipe (25), and the positions of the spray disc (19) and the filter mechanism (16) correspond.

2. The distillation tower with waste liquid recovery function according to claim 1, characterized in that: A liquid discharge pipe (20) is fixedly provided on one side of the filter tank (14) below the liquid inlet pipe (25); a water pump (21) is fixedly provided at the other end of the liquid discharge pipe (20); the water pump (21) is communicated with the liquid discharge pipe (20); a connecting pipe (23) is fixedly provided at the other end of the water pump (21); a water tank (22) is fixedly provided at the other end of the connecting pipe (23); and both ends of the connecting pipe (23) are communicated with the water pump (21) and the water tank (22), respectively.

3. The distillation tower with waste liquid recovery function according to claim 2, characterized in that: A liquid separation pipe (24) is fixedly provided on one side of the exterior of the connecting pipe (23), and both ends of the liquid separation pipe (24) are respectively connected to the liquid inlet pipe (25) and the connecting pipe (23).

4. The distillation tower with waste liquid recovery function according to claim 3, characterized in that: A motor (26) is fixedly provided on one side of the filter tank (14) above the liquid inlet pipe (25), a driving gear (17) is fixedly provided on the outside of the output shaft of the motor (26), and a transmission gear (18) is fixedly provided on the outside of the liquid inlet pipe (25), and the transmission gear (18) is meshedly connected with the driving gear (17).

5. The distillation tower with waste liquid recovery function according to claim 4, characterized in that: A cooling pipe (10) is provided on the outside of the liquid outlet pipe (9), a water outlet (13) is fixedly provided above one side of the outside of the cooling pipe (10), and a water inlet (12) is fixedly provided below the other side of the outside of the cooling pipe (10), the water inlet (12) and the water outlet (13) are both connected to the cooling pipe (10), and a bracket (11) is fixedly provided at the middle position of the outside of the cooling pipe (10).

6. The distillation tower with waste liquid recovery function according to claim 5, characterized in that: A valve (8) is fixedly provided at the connection between the other side of the exterior of the connecting pipe (23), the liquid outlet (7), and the liquid outlet pipe (9).

7. The distillation tower with waste liquid recovery function according to claim 6, characterized in that: An air outlet (4) is fixedly provided at the upper end of the tower body (1), a reflux liquid inlet (5) is fixedly provided above one side of the tower body (1), a feed inlet (2) is fixedly provided at the middle position of one side of the tower body (1), and a gas inlet (6) is fixedly provided below one side of the tower body (1); the gas inlet (6), the feed inlet (2), the reflux liquid inlet (5) and the air outlet (4) are all in communication with the tower body (1).

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