Negative pressure low temperature dryer for treating evaporation mother liquor

Abstract

This invention relates to the field of dryers and discloses a negative pressure low-temperature dryer for processing evaporated mother liquor. In this invention, an evaporation chamber is provided inside the equipment housing. A cylinder is fixedly connected to the top of the evaporation chamber, and a motor mounting base is fixedly connected below the cylinder. A motor is fixedly connected to the inner side of the motor mounting base, and a motor shaft is rotatably connected below the motor. A scraper is fixedly connected below the motor shaft, and a fixing screw limiting ring is fixedly connected below the motor mounting base. The fixing screw limiting ring is connected to a fixing screw, and the fixing screw is connected to a sliding ring. The sliding ring is connected to a connecting rod, and a scraper cleaning block is fixedly connected below the connecting rod. A scraper is slidably connected to the inner side of the scraper cleaning block. This method can disperse the mother liquor into a thin film, increasing the contact area with hot air and improving drying efficiency. Furthermore, the scraper cleaning block slides on the outer side of the scraper, keeping the scraper surface clean, preventing long-term adhesion of mother liquor and corrosion, and extending the scraper's service life.

Description

Technical Field

[0001] This invention belongs to the field of drying technology, specifically a negative pressure low-temperature dryer for processing evaporation mother liquor. Background Technology

[0002] Evaporation mother liquor typically contains high concentrations of salt, organic matter, and other impurities, and traditional treatment methods are often energy-intensive and inefficient. With increasingly stringent environmental regulations and the growing importance of resource recycling, developing a highly efficient, energy-saving, and environmentally friendly device for treating evaporation mother liquor is crucial. The negative pressure low-temperature dryer utilizes a negative pressure environment to lower the boiling point of the solution, thereby achieving evaporation and drying of the mother liquor at a lower temperature. This technology not only effectively reduces energy consumption but also avoids damage to heat-sensitive substances, ensuring the quality of the materials during processing. Compared to traditional high-temperature drying methods, the negative pressure low-temperature dryer operates under milder conditions, significantly improving processing efficiency and product quality. The equipment recovers the steam generated during evaporation through a condensation system, further reducing emissions of waste gas and liquid, meeting the requirements of modern industry for environmental protection and sustainable development. Its automated control system enables precise temperature and pressure control, ensuring the stability and reliability of equipment operation, and is suitable for high-concentration wastewater treatment and resource recovery in various industries such as chemical, pharmaceutical, and food processing. In conclusion, the negative pressure low-temperature dryer provides an innovative and effective solution to the problem of evaporation mother liquor treatment.

[0003] However, common negative pressure low-temperature dryers cannot clean the mother liquor adhering to the scraper during the drying process, which will corrode the scraper in the long run, resulting in a short service life of the scraper. Summary of the Invention

[0004] The purpose of this invention is to provide a negative pressure low-temperature dryer for processing evaporation mother liquor in order to solve the problems mentioned above.

[0005] The technical solution adopted in this invention is as follows: A negative pressure low-temperature dryer for processing evaporation mother liquor includes a main body of the equipment. An evaporation chamber is opened inside the equipment body. A cylinder is fixedly connected to the top of the evaporation chamber. A motor mounting base is fixedly connected to the bottom of the cylinder. A motor is fixedly connected to the inner side of the motor mounting base. A motor shaft is rotatably connected to the bottom of the motor. A scraper is fixedly connected to the bottom of the motor shaft. A fixing screw limiting ring is fixedly connected to the bottom of the motor mounting base. A fixing screw is fixedly connected to the bottom of the fixing screw limiting ring. A sliding ring is slidably connected to the outer side of the fixing screw. A connecting rod is rotatably connected around the sliding ring. A scraper cleaning block is fixedly connected to the bottom of the connecting rod. A scraper is slidably connected to the inner side of the scraper cleaning block.

[0006] By adopting the above technical solution, the mother liquor to be treated is placed in a mother liquor placement tray, and then the mother liquor placement tray is placed at the bottom of the evaporation chamber through a sealing plate. The sealing rubber fixed on the sealing plate can keep the inside of the evaporation chamber tightly sealed. Then, the negative pressure vacuum pump is started through the control panel. The negative pressure vacuum pump will extract the air from the evaporation chamber, steam collection chamber, condenser and water tank through the negative pressure vacuum pump suction port to maintain the internal low pressure. Then, the hot air fan is started to heat the inside of the evaporation chamber through the heating tube. During the heating and evaporation process, the cylinder will start to drive the motor mounting base to descend until the bottom of the scraper contacts the mother liquor placement tray. The motor will drive the scraper to rotate through the motor shaft, which can disperse the mother liquor into a thin film, increase the contact area with the hot air, and improve the drying efficiency. When the scraper rotates, it will drive the scraper cleaning block and the connecting rod to drive the sliding ring to slide up and down on the outside of the fixed screw, thereby driving the scraper cleaning block to slide on the outside of the scraper. This can keep the surface of the scraper clean, prevent the mother liquor from adhering to and corroding the scraper for a long time, and improve the service life of the scraper.

[0007] In a preferred embodiment, an equipment compartment is provided on the inner side of the equipment housing. An exhaust port is fixedly connected to the left side of the equipment compartment, and a vacuum pump intake port is fixedly connected to the right side of the equipment compartment. An evaporation chamber is fixedly connected to the right end of the vacuum pump intake port.

[0008] By adopting the above technical solution, a negative pressure can be formed inside the evaporation chamber, thereby enabling rapid dehydration.

[0009] In a preferred embodiment, a mother liquor placement tray is slidably connected to the bottom of the evaporation chamber, and a sealing plate is fixedly connected to the outside of the mother liquor placement tray.

[0010] By adopting the above technical solution, it is convenient to place the mother liquor and take out the dried mother liquor, and the sealing plate can keep the inside tightly sealed.

[0011] In a preferred embodiment, a mother liquor placement tray is slidably connected below the scraper.

[0012] By adopting the above technical solution, the mother liquor can be dispersed into a thin film, increasing the contact area with hot air.

[0013] In a preferred embodiment, a control panel is fixedly connected to the front of the equipment housing.

[0014] By adopting the above technical solution, the operation of the device can be controlled through the control panel.

[0015] In a preferred embodiment, a steam collection chamber is fixedly connected above the evaporation chamber, and a condenser pipe is fixedly connected above the steam collection chamber.

[0016] By adopting the above technical solution, evaporated water vapor can be collected and cooled in the condenser tube.

[0017] In a preferred embodiment, an exhaust port is fixedly connected to the left side of the equipment housing, and a negative pressure vacuum pump is fixedly connected to the inside of the exhaust port.

[0018] By adopting the above technical solution, the air extracted by the negative pressure vacuum pump can be discharged.

[0019] In a preferred embodiment, a heating tube is fixedly connected to the inner side of the evaporation chamber, a hot air blower is fixedly connected to one end of the heating tube, and a negative pressure vacuum pump is fixedly connected below the hot air blower.

[0020] By adopting the above technical solution, the inside of the evaporation chamber can be heated, thereby causing the mother liquor to evaporate.

[0021] In a preferred embodiment, an inspection door is rotatably connected to the front of the equipment housing.

[0022] By adopting the above technical solutions, equipment maintenance can be facilitated.

[0023] In a preferred embodiment, a drain pipe is fixedly connected to the lower part of the condenser tube, and a water tank is fixedly connected to the lower part of the drain pipe.

[0024] By adopting the above technical solution, water cooled by the condenser tube can be collected, and negative pressure in the evaporation chamber can be maintained.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] In this invention, during equipment operation, the mother liquor to be treated is placed in a mother liquor placement tray, and then the mother liquor placement tray is placed at the bottom of the evaporation chamber by a sealing plate. The sealing rubber fixed on the sealing plate can keep the inside of the evaporation chamber tightly sealed. Then, the negative pressure vacuum pump is started through the control panel. The negative pressure vacuum pump will extract the air from the evaporation chamber, steam collection chamber, condenser pipe and water tank through the negative pressure vacuum pump suction port to maintain the internal low pressure. Then, the hot air fan is started to heat the inside of the evaporation chamber through the heating pipe. During the heating and evaporation process, the cylinder will start and drive the motor mounting base to descend until the bottom of the scraper contacts the mother liquor placement tray. The motor will drive the scraper to rotate through the motor shaft, which can disperse the mother liquor into a thin film, increase the contact area with the hot air, and improve the drying efficiency. When the scraper rotates, it will drive the scraper cleaning block and the connecting rod to drive the sliding ring to slide up and down on the outside of the fixed screw, thereby driving the scraper cleaning block to slide on the outside of the scraper. This can keep the surface of the scraper clean, prevent the mother liquor from adhering to and corroding the scraper for a long time, and improve the service life of the scraper. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention;

[0028] Figure 2 This is a schematic diagram of the internal structure of the equipment compartment in the device of the present invention;

[0029] Figure 3 This is a schematic diagram of the internal structure of the evaporation chamber in the device of the present invention;

[0030] Figure 4 This is a schematic diagram of the mother liquor placement tray structure in the device of the present invention;

[0031] Figure 5 This is a schematic diagram of the scraper cleaning mechanism in the device of the present invention.

[0032] The diagram shows the following components: 1. Equipment housing; 2. Evaporation chamber; 3. Cylinder; 4. Motor mounting base; 5. Motor; 6. Motor shaft; 7. Scraper; 8. Fixed screw limit ring; 9. Fixed screw; 10. Sliding ring; 11. Connecting rod; 12. Scraper cleaning block; 13. Hot air blower; 14. Heating tube; 15. Steam collection chamber; 16. Sealing plate; 17. Negative pressure vacuum pump; 18. Exhaust port; 19. Inspection door; 20. Control panel; 21. Condenser; 22. Drain pipe; 23. Water tank; 24. Equipment compartment; 25. Negative pressure vacuum pump suction port; 26. Mother liquor placement tray. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0034] Reference Figure 1-5 A negative pressure low-temperature dryer for processing evaporation mother liquor includes a housing 1, an evaporation chamber 2 inside the housing 1, a cylinder 3 fixedly connected to the top of the evaporation chamber 2, a motor mounting base 4 fixedly connected to the bottom of the cylinder 3, a motor 5 fixedly connected to the inner side of the motor mounting base 4, a motor shaft 6 rotatably connected to the bottom of the motor 5, a scraper 7 fixedly connected to the bottom of the motor shaft 6, a fixing screw limiting ring 8 fixedly connected to the bottom of the motor mounting base 4, a fixing screw 9 fixedly connected to the bottom of the fixing screw limiting ring 8, a sliding ring 10 slidably connected to the outer side of the fixing screw 9, a connecting rod 11 rotatably connected around the sliding ring 10, a scraper cleaning block 12 fixedly connected to the bottom of the connecting rod 11, and a scraper 7 slidably connected to the inner side of the scraper cleaning block 12, thereby improving the service life of the scraper 7 and increasing the drying efficiency of the equipment.

[0035] Reference Figure 1-5 The mother liquor to be treated is placed in the mother liquor placement tray 26, and then the mother liquor placement tray 26 is placed at the bottom of the evaporation chamber 2 through the sealing plate 16. The sealing rubber fixed on the sealing plate 16 can keep the inside of the evaporation chamber 2 tightly sealed. Then, the negative pressure vacuum pump 17 is started through the control panel 20. The negative pressure vacuum pump 17 will extract the air from the evaporation chamber 2, the steam collection chamber 15, the condenser pipe 21 and the water tank 23 through the negative pressure vacuum pump suction port 25 to maintain the internal low pressure. Then, the hot air fan 13 is started, and the inside of the evaporation chamber 2 is heated through the heating pipe 14. During the heating and evaporation process... The cylinder 3 will start and drive the motor mounting base 4 to descend until the bottom of the scraper 7 contacts the mother liquor placement tray 26. The motor 5 will drive the scraper 7 to rotate through the motor shaft 6, which can disperse the mother liquor into a thin film, increase the contact area with hot air, and improve the drying efficiency. When the scraper 7 rotates, it will drive the sliding ring 10 to slide up and down on the outside of the fixed screw 9 through the scraper cleaning block 12 and the connecting rod 11, thereby driving the scraper cleaning block 12 to slide on the outside of the scraper 7. This can keep the surface of the scraper 7 clean, prevent the mother liquor from adhering to and corroding the scraper 7 for a long time, and improve the service life of the scraper 7.

[0036] Reference Figure 1-3 The equipment housing 1 has an equipment compartment 24 on its inner side. An exhaust port 18 is fixedly connected to the left side of the equipment compartment 24, and a vacuum pump suction port 25 is fixedly connected to the right side of the equipment compartment 24. An evaporation chamber 2 is fixedly connected to the right end of the vacuum pump suction port 25. This allows a negative pressure to be formed inside the evaporation chamber 2, thereby enabling rapid dehydration.

[0037] Reference Figure 1-4 The bottom of the evaporation chamber 2 is slidably connected to a mother liquor placement tray 26, and a sealing plate 16 is fixedly connected to the outside of the mother liquor placement tray 26. This facilitates the placement and removal of the dried mother liquor, and the sealing plate 16 ensures a tight internal seal.

[0038] Reference Figure 1-5 A mother liquor placement tray 26 is slidably connected below the scraper 7. This can disperse the mother liquor into a thin film, increasing the contact area with hot air.

[0039] Reference Figure 1-2 A control panel 20 is fixedly connected to the front of the equipment housing 1. The operation of the equipment can be controlled through the control panel 20.

[0040] Reference Figure 1-2 A steam collection chamber 15 is fixedly connected above the evaporation chamber 2, and a condenser pipe 21 is fixedly connected above the steam collection chamber 15. This allows the evaporated water vapor to be collected and cooled in the condenser pipe 21.

[0041] Reference Figure 1-2An exhaust port 18 is fixedly connected to the left side of the equipment housing 1, and a negative pressure vacuum pump 17 is fixedly connected to the inside of the exhaust port 18. This allows the air drawn out by the negative pressure vacuum pump 17 to be discharged.

[0042] Reference Figure 1-3 A heating pipe 14 is fixedly connected to the inner side of the evaporation chamber 2. A hot air blower 13 is fixedly connected to one end of the heating pipe 14. A negative pressure vacuum pump 17 is fixedly connected below the hot air blower 13. This allows the interior of the evaporation chamber 2 to be heated, thereby causing the mother liquor to evaporate.

[0043] Reference Figure 1 The equipment housing 1 has a rotatable access door 19 at the front, which facilitates equipment maintenance.

[0044] Reference Figure 1-2 A drain pipe 22 is fixedly connected to the lower part of the condenser tube 21, and a water tank 23 is fixedly connected to the lower part of the drain pipe 22. This system can collect the water cooled by the condenser tube 21 and maintain negative pressure in the evaporation chamber 2.

[0045] The implementation principle of a negative pressure low-temperature dryer for processing evaporation mother liquor according to an embodiment of the present invention is as follows:

[0046] During equipment operation, the mother liquor to be treated is placed in the mother liquor placement tray 26, and then the mother liquor placement tray 26 is placed at the bottom of the evaporation chamber 2 through the sealing plate 16. The sealing rubber fixed on the sealing plate 16 can keep the inside of the evaporation chamber 2 tightly sealed. Then, the negative pressure vacuum pump 17 is started through the control panel 20. The negative pressure vacuum pump 17 will extract the air from the evaporation chamber 2, the steam collection chamber 15, the condenser pipe 21 and the water tank 23 through the negative pressure vacuum pump suction port 25 to maintain the internal low pressure. Then, the hot air fan 13 is started, and the inside of the evaporation chamber 2 is heated through the heating pipe 14. During the evaporation process, cylinder 3 will start and drive motor mounting base 4 to descend until the bottom of scraper 7 contacts mother liquor tray 26. Motor 5 will drive scraper 7 to rotate through motor shaft 6, which can disperse mother liquor into a thin film, increase the contact area with hot air, and improve drying efficiency. When scraper 7 rotates, it will drive sliding ring 10 to slide up and down on the outside of fixed screw 9 through scraper cleaning block 12 and connecting rod 11, thereby driving scraper cleaning block 12 to slide on the outside of scraper 7. This can keep the surface of scraper 7 clean, prevent mother liquor from adhering to and corroding scraper 7 for a long time, and improve the service life of scraper 7.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A negative pressure low-temperature dryer for processing evaporation mother liquor, comprising a housing (1), characterized in that: An evaporation chamber (2) is provided inside the equipment housing (1). A cylinder (3) is fixedly connected to the top of the evaporation chamber (2). A motor mounting base (4) is fixedly connected to the bottom of the cylinder (3). A motor (5) is fixedly connected to the inner side of the motor mounting base (4). A motor shaft (6) is rotatably connected to the bottom of the motor (5). A scraper (7) is fixedly connected to the bottom of the motor shaft (6). A fixing screw limiting ring (8) is fixedly connected to the bottom of the motor mounting base (4). A fixed screw (9) is fixedly connected to the bottom. A sliding ring (10) is slidably connected to the outside of the fixed screw (9). A connecting rod (11) is rotatably connected around the sliding ring (10). A scraper cleaning block (12) is fixedly connected to the bottom of the connecting rod (11). A scraper (7) is slidably connected to the inside of the scraper cleaning block (12). An equipment compartment (24) is opened on the inside of the equipment box (1). An exhaust port (18) is fixedly connected to the left side of the equipment compartment (24). A fixed exhaust port (18) is fixed to the right side of the equipment compartment (24). A vacuum pump suction port (25) is connected to the equipment. An evaporation chamber (2) is fixedly connected to the right end of the vacuum pump suction port (25). A mother liquor placement tray (26) is slidably connected to the bottom of the evaporation chamber (2). A sealing plate (16) is fixedly connected to the outside of the mother liquor placement tray (26). The mother liquor placement tray (26) is slidably connected to the bottom of the scraper (7). A control panel (20) is fixedly connected to the front of the equipment housing (1). A steam collection chamber (15) is fixedly connected to the top of the evaporation chamber (2). A condenser pipe (21) is fixedly connected to the top of the steam collection chamber (15). An exhaust port (18) is fixedly connected to the left side of the equipment box (1). A negative pressure vacuum pump (17) is fixedly connected to the inside of the exhaust port (18). A heating pipe (14) is fixedly connected to the inside of the evaporation chamber (2). A hot air blower (13) is fixedly connected to one end of the heating pipe (14). A negative pressure vacuum pump (17) is fixedly connected to the bottom of the hot air blower (13). An inspection door (19) is rotatably connected to the front of the equipment box (1).

2. The negative pressure low-temperature dryer for processing evaporation mother liquor as described in claim 1, characterized in that: A drain pipe (22) is fixedly connected to the lower part of the condenser pipe (21), and a water tank (23) is fixedly connected to the lower part of the drain pipe (22).

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