Solvent recovery device with low-temperature function

Abstract

The utility model relates to the technical field of solvent recovery, in particular to a solvent recovery device with a low-temperature function, which comprises a solvent recovery part, two cooling tanks are installed at the top of the fixing frame, an air inlet cavity, a cooling cavity and an exhaust cavity are sequentially formed in each cooling tank from top to bottom, a water inlet is formed in the top of the outer wall of each cooling tank, a water outlet is formed in the bottom of the outer wall of each cooling tank, and the water inlets and the water outlets are both communicated with the cooling cavities; the solvent gas enters the two cooling tanks in sequence, due to the fact that continuously flowing cooling water is arranged in the cooling cavity, when the solvent gas enters the spiral cooling pipe, due to the fact that the surface temperature of the cooling pipe is low, the solvent gas can be condensed into liquid, and the condensed liquid can be collected into the collecting box through the liquid collecting pipe; the multiple cooling pipes are arranged in the design, the treatment effect on solvent gas is improved, and meanwhile the treatment effect on the solvent gas is improved through the cooling tanks which are arranged in a dual mode.

Description

Technical Field

[0001] The utility model relates to the technical field of solvent recovery, in particular to a solvent recovery device with a low-temperature function. Background Art

[0002] The solvent recovery device is a device used to recover organic solvents. It is mainly used in organic synthesis reactions or production processes in the chemical, pharmaceutical, food, coating and other industries. Its principle is to recover and reuse the solvents by subjecting the waste gas containing organic solvents to multi-stage treatment, so as to save resources and protect the environment. The solvent recovery device is composed of a vacuum controller, a diaphragm vacuum pump, a cooler, a waste liquid recovery bottle, a waste gas adsorption device, etc.

[0003] The utility model patent with the authorization announcement number CN209512548U discloses a solvent recovery dry vacuum unit, which includes a reaction tank and a solvent body, wherein the inner wall of the reaction tank is provided with a cooling pipe near the top, and a spiral extraction pipe is provided in the cooling pipe, and the circumferential outer wall of the reaction tank is respectively fixed with a first support plate and a second support plate near the top, and the upper surface of the first support plate is fixed with a clamp by bolts, and a driving motor is clamped in the clamp, and a transmission rod is fixed at the top of the output shaft of the driving motor, and the second support plate is provided with a circular hole near the outer wall of the reaction tank, and an intermediate tank is inserted in the circular hole, and a discharge pipe is inserted at the bottom of the intermediate tank, and a solenoid valve is provided in the middle of the discharge pipe, and a vacuum pump is fixed on the upper surface of the second support plate by bolts. By providing a spiral extraction pipe, the path of the gas solvent in the extraction pipe can be increased within a certain volume range, thereby expanding the contact area between the outer wall of the extraction pipe and the cooling water, thereby improving the condensation efficiency, and the solvent medium can be effectively recovered to the greatest extent.

[0004] Although the solvent recovery dry vacuum unit can effectively recover the solvent medium to the greatest extent, the device still has some shortcomings when it is actually used. Specifically, the device only has a separate extraction tube for condensation. Due to the number and inner diameter of the extraction tube, the volume of gas passing through it at a single time is limited. When a large amount of solvent needs to be processed, the processing efficiency of the extraction tube is low. In view of this, we propose a solvent recovery device with a low-temperature function. Utility Model Content

[0005] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one purpose of the utility model is to provide a solvent recovery device with a low temperature function, which improves the treatment effect of the solvent gas by setting a plurality of cooling pipes, and at the same time, improves the treatment effect of the solvent gas by double-setting cooling tanks.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A solvent recovery device with a low temperature function, comprising a solvent recovery part;

[0008] The solvent recovery part includes a base, a fixing frame is fixed on the top of the base, and two cooling tanks are installed on the top of the fixing frame, and the interior of the cooling tank is provided with an air inlet chamber, a cooling chamber and an exhaust chamber from top to bottom in sequence, a water inlet is installed at the top of the outer wall of the cooling tank, and a drain outlet is installed at the bottom of the outer wall of the cooling tank, and the water inlet and the drain outlet are both connected with the cooling chamber; an exhaust pipe connected with the exhaust chamber is installed at the bottom of the cooling tank, and an air inlet pipe is installed on the top of the cooling tank; a plurality of cooling pipes are installed in the cooling chamber, and the two ends of the cooling pipes are respectively connected with the air inlet chamber and the exhaust chamber; a first exhaust pipe is installed on the outer wall of the exhaust pipe located on the rear side, and the end of the first exhaust pipe is connected with the air inlet pipe on the front side, and a second exhaust pipe is installed on the outer wall of the exhaust pipe located on the front side; a vacuum pump is installed on the front end surface of the fixing frame, and the second exhaust pipe is connected with the air inlet of the vacuum pump; a liquid collecting pipe is installed at the bottom between the two exhaust pipes;

[0009] A water inlet pipe connected to the water inlet is installed on the left side of the fixing frame, and a drain pipe connected to the drain outlet is installed on the right side of the fixing frame.

[0010] In addition, the solvent recovery device with low temperature function proposed in the application may also have the following additional technical features:

[0011] Specifically, a collecting box with an opening at the top is installed at the front end of the top of the base, and the front end of the liquid collecting pipe is connected to the inner cavity of the collecting box.

[0012] Specifically, a drain port is installed below the front end surface of the collecting box, and a plug is provided at the drain port.

[0013] Specifically, a cover plate is installed on the top of the collection box, and the cover plate is fixedly connected to the collection box by bolts.

[0014] Specifically, a first valve is installed at the end of the water inlet pipe, and a second valve is installed at the end of the drain pipe.

[0015] Specifically, the overall shape of the cooling tube is spiral, and a plurality of cooling tubes are distributed in a ring shape with equal intervals.

[0016] Specifically, the cross-section of the fixing frame is U-shaped, and the fixing frame is fixedly connected to the cooling tank by bolts.

[0017] Specifically, the cross-sectional shape of the first exhaust pipe is L-shaped, and the cross-sectional shape of the second exhaust pipe is L-shaped.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] Through the solvent recovery section, the solvent gas enters into two cooling tanks in turn. Since there is continuously flowing cooling water in the cooling chamber, when the solvent gas enters into the spiral cooling pipe, the surface temperature of the cooling pipe is relatively low, so the solvent gas can be condensed into liquid, and the condensed liquid can be collected into the collection box through the liquid collecting pipe. The multiple cooling pipes set in this design improve the treatment effect of the solvent gas. At the same time, the treatment effect of the solvent gas is improved through the double-set cooling tanks. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a cross-sectional view of the overall structure of the utility model;

[0022] Figure 3 It is a partial structural schematic diagram of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the cooling tank in the utility model;

[0024] Figure 5 It is a structural sectional view of the cooling tank in the utility model.

[0025] In the figure:

[0026] 1. Solvent recovery unit; 10. Base; 11. Fixing frame; 12. Cooling tank; 121. Air inlet cavity; 122. Cooling cavity; 123. Exhaust cavity; 124. Water inlet; 125. Drain outlet; 126. Exhaust pipe; 13. Cooling pipe; 14. Air inlet pipe; 15. First exhaust pipe; 16. Second exhaust pipe; 17. Liquid collecting pipe; 18. Vacuum pump; 19. Collecting box; 191. Drain outlet; 192. Cover plate;

[0027] 2. Water inlet pipe; 21. First valve;

[0028] 3. Drain pipe; 31. Second valve. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] This embodiment provides a technical solution:

[0031] See also Figure 1-Figure 5 , a solvent recovery device with low temperature function, comprises a solvent recovery part 1. The solvent recovery part 1 comprises a base 10, a fixing frame 11 is fixed on the top of the base 10, two cooling tanks 12 are installed on the top of the fixing frame 11, and the interior of the cooling tank 12 is provided with an air inlet cavity 121, a cooling cavity 122 and an exhaust cavity 123 from top to bottom, a water inlet 124 is installed at the top of the outer wall of the cooling tank 12, a drain port 125 is installed at the bottom of the outer wall of the cooling tank 12, and the water inlet 124 and the drain port 125 are both connected with the cooling cavity 122; a discharge pipe 126 connected with the exhaust cavity 123 is installed at the bottom of the cooling tank 12, and an air inlet pipe 14 is installed on the top of the cooling tank 12; a plurality of cooling pipes 13 are installed in the cooling cavity 122, and The two ends of the cooling pipe 13 are respectively connected to the air inlet cavity 121 and the exhaust cavity 123; a first exhaust pipe 15 is installed on the outer wall of the exhaust pipe 126 located on the rear side, and the end of the first exhaust pipe 15 is connected to the air inlet pipe 14 on the front side, and a second exhaust pipe 16 is installed on the outer wall of the exhaust pipe 126 located on the front side; a vacuum pump 18 is installed on the front end surface of the fixed frame 11, and the second exhaust pipe 16 is connected to the air inlet of the vacuum pump 18; a liquid collecting pipe 17 is installed below between the two exhaust pipes 126; a water inlet pipe 2 connected to the water inlet 124 is installed on the left side of the fixed frame 11, and a drain pipe 3 connected to the drain outlet 125 is installed on the right side of the fixed frame 11.

[0032] Specifically, a collecting box 19 with an open top is installed at the front end of the top of the base 10, and the front end of the liquid collecting pipe 17 is connected to the inner cavity of the collecting box 19. This design facilitates the collection of the condensed liquid of the solvent gas through the collecting box 19.

[0033] Specifically, a drain port 191 is installed below the front end surface of the collecting box 19, and a plug is provided at the drain port 191. The setting of the drain port 191 is convenient for discharging the collected condensate, and the setting of the plug is convenient for controlling the discharge.

[0034] Specifically, a cover plate 192 is installed on the top of the collection box 19, and the cover plate 192 is fixedly connected to the collection box 19 by bolts. The arrangement of the cover plate 192 facilitates the closure of the collection box 19 and improves the dustproof effect of the collection box 19.

[0035] Specifically, a first valve 21 is installed at the end of the water inlet pipe 2, and a second valve 31 is installed at the end of the drain pipe 3. The first valve 21 and the second valve 31 are arranged to facilitate the control of water inlet and drain.

[0036] Specifically, the overall shape of the cooling tube 13 is spiral, and the multiple cooling tubes 13 are distributed in a ring-shaped manner with equal spacing. The spiral design increases the contact area between the cooling tube 13 and the cooling medium, improves the heat exchange efficiency, and makes the solvent condense more quickly. The design of multiple cooling tubes 13 improves the efficiency of the treatment.

[0037] Specifically, the cross-section of the fixing frame 11 is U-shaped, and the fixing frame 11 is fixedly connected to the cooling tank 12 by bolts. This design provides a stable support for the cooling tank 12, ensuring that the cooling tank 12 remains fixed and balanced during operation.

[0038] Specifically, the cross-sectional shape of the first exhaust pipe 15 is L-shaped, and the cross-sectional shape of the second exhaust pipe 16 is L-shaped. The L-shaped design can prevent the condensed liquid from flowing back into the first exhaust pipe 15 and the second exhaust pipe 16, thereby ensuring the continuity and stability of the recovery process.

[0039] It should be added that the air inlet pipe 14 located at the rear side in this embodiment can be connected to the exhaust port of the evaporator, and the solvent gas in the evaporator can enter the cooling tank 12 through the air inlet pipe 14, thereby facilitating condensation in the cooling tank 12.

[0040] It is worth noting that the vacuum pump 18 involved in this embodiment is an existing conventional technology and will not be described in detail here.

[0041] During specific use, the user first turns on the power of the vacuum pump 18, and the vacuum pump 18 starts working. At the same time, the solvent gas enters the air intake chamber 121 in the rear cooling tank 12 through the rear air intake pipe 14, and at the same time, the solvent gas enters multiple cooling tubes 13. At this time, the cooling medium enters the cooling tank 12 through the water inlet pipe 2, and the cooling medium cools the cooling tube 13 at the same time. When the solvent gas flows in the cooling tube 13, the solvent gas is cooled and condensed into liquid. The liquid flows into the collecting pipe 17 through the discharge pipe 126, and flows into the collecting box 19 through the collecting pipe 17. At the same time, the solvent gas enters the cooling tank 12 on the front side through the first exhaust pipe 15 on the rear side for re-condensation. The liquid produced after condensation flows into the collecting pipe 17 again, and flows into the collecting box 19 through the collecting pipe 17. Finally, the condensed gas is discharged through the vacuum pump 18.

[0042] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A solvent recovery device with a low temperature function, comprising a solvent recovery unit (1), characterized in that: The solvent recovery part (1) comprises a base (10), a fixing frame (11) is fixed on the top of the base (10), two cooling tanks (12) are installed on the top of the fixing frame (11), and the interior of the cooling tank (12) is provided with an air intake chamber (121), a cooling chamber (122) and an exhaust chamber (123) from top to bottom, a water inlet (124) is installed at the top of the outer wall of the cooling tank (12), a water outlet (125) is installed at the bottom of the outer wall of the cooling tank (12), and both the water inlet (124) and the water outlet (125) are connected to the cooling chamber (122); a discharge pipe (126) connected to the exhaust chamber (123) is installed at the bottom of the cooling tank (12), and the cooling tank (12) An air intake pipe (14) is installed on the top of each of the cooling chambers (122); a plurality of cooling pipes (13) are installed in the cooling chamber (122), and the two ends of the cooling pipes (13) are respectively connected to the air intake chamber (121) and the air exhaust chamber (123); a first exhaust pipe (15) is installed on the outer wall of the exhaust pipe (126) located at the rear side, and the end of the first exhaust pipe (15) is connected to the air intake pipe (14) at the front side, and a second exhaust pipe (16) is installed on the outer wall of the exhaust pipe (126) located at the front side; a vacuum pump (18) is installed on the front end surface of the fixing frame (11), and the second exhaust pipe (16) is connected to the air intake of the vacuum pump (18); a liquid collecting pipe (17) is installed below the two exhaust pipes (126); A water inlet pipe (2) connected to the water inlet (124) is installed on the left side of the fixed frame (11), and a drainage pipe (3) connected to the drainage port (125) is installed on the right side of the fixed frame (11).

2. The solvent recovery device with low temperature function according to claim 1 is characterized in that: A collecting box (19) with a top opening is installed at the front end of the top of the base (10), and the front end of the liquid collecting pipe (17) is connected to the inner cavity of the collecting box (19).

3. The solvent recovery device with low temperature function according to claim 2 is characterized in that: A liquid discharge port (191) is installed below the front end surface of the collecting box (19), and a plug is provided at the liquid discharge port (191).

4. The solvent recovery device with low temperature function according to claim 2 is characterized in that: A cover plate (192) is installed on the top of the collection box (19), and the cover plate (192) is fixedly connected to the collection box (19) by bolts.

5. The solvent recovery device with low temperature function according to claim 1, characterized in that: A first valve (21) is installed at the end of the water inlet pipe (2), and a second valve (31) is installed at the end of the drainage pipe (3).

6. The solvent recovery device with low temperature function according to claim 1, characterized in that: The overall shape of the cooling tube (13) is spiral, and a plurality of cooling tubes (13) are distributed in a ring shape at equal intervals.

7. The solvent recovery device with low temperature function according to claim 1 is characterized in that: The cross-sectional shape of the fixing frame (11) is U-shaped, and the fixing frame (11) is fixedly connected to the cooling tank (12) by means of bolts.

8. The solvent recovery device with low temperature function according to claim 1, characterized in that: The cross-sectional shape of the first exhaust pipe (15) is L-shaped, and the cross-sectional shape of the second exhaust pipe (16) is L-shaped.

Images