Negative-pressure low-temperature dryer for treating evaporation mother liquor

Abstract

The invention relates to the field of dryers, and discloses a negative-pressure low-temperature dryer for treating evaporation mother liquor. An evaporation bin is formed in the equipment box body, an air cylinder is fixedly connected to the top of the evaporation bin, a motor fixing seat is fixedly connected to the lower portion of the air cylinder, a motor is fixedly connected to the inner side of the motor fixing seat, a motor shaft is rotatably connected to the lower portion of the motor, and a scraping plate is fixedly connected to the lower portion of the motor shaft. The chain plate machine is fixed below the motor fixing seat, a fixing lead screw limiting ring is connected with a fixing lead screw, the fixing lead screw is connected with a sliding ring, the sliding ring is connected with a connecting rod, a scraper cleaning block is fixedly connected below the connecting rod, and a scraper is slidably connected to the inner side of the scraper cleaning block. The mother liquor can be dispersed into a film, the contact area with hot air is increased, the drying efficiency is improved, the scraper cleaning block slides on the outer side of the scraper, the surface of the scraper can be kept clean, the mother liquor is prevented from being attached to corrode the scraper for a long time, and the service life of the scraper is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of drying machines, in particular to a negative pressure low-temperature drying machine for treating evaporation mother liquor. Background Art

[0002] Evaporation mother liquor often contains high concentrations of salt, organic matter, and other impurities. Traditional treatment methods are often energy-intensive and inefficient. With increasingly stringent environmental regulations and the growing importance of resource recovery, the development of efficient, energy-saving, and environmentally friendly equipment for treating evaporation mother liquor has become increasingly important. The negative pressure low-temperature dryer utilizes a negative pressure environment to lower the boiling point of the solution, thereby evaporating and drying the mother liquor at a lower temperature. This technology not only effectively reduces energy consumption but also avoids damage to heat-sensitive materials, ensuring the quality of the processed material. Compared to traditional high-temperature drying methods, the negative pressure low-temperature dryer operates under milder conditions, significantly improving treatment efficiency and product quality. This equipment recovers the vapor generated by evaporation through a condensation system, further reducing waste gas and liquid emissions and meeting the environmental and sustainable development requirements of modern industry. Its automated control system enables precise temperature and pressure control, ensuring stable and reliable operation. It is suitable for high-concentration wastewater treatment and resource recovery in a variety of industries, including the chemical, pharmaceutical, and food industries. In short, the negative pressure low-temperature dryer provides an innovative and effective solution to the challenges of evaporation mother liquor treatment.

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

[0004] The object of the present invention is to provide a negative pressure low temperature drying machine for treating evaporation mother liquor in order to solve the above-mentioned problems.

[0005] The technical solution adopted by the present invention is as follows: A negative pressure low-temperature dryer for treating evaporated mother liquor comprises an equipment main body, an evaporation bin is opened inside the equipment box, the top of the evaporation bin is fixedly connected to a cylinder, the bottom of the cylinder is fixedly connected to a motor fixing seat, the inner side of the motor fixing seat is fixedly connected to a motor, the bottom of the motor is rotatably connected to a motor shaft, the bottom of the motor is fixedly connected to a scraper, the bottom of the motor fixing seat is fixedly connected to a fixed chain plate machine with a fixed screw rod limiting ring, the bottom of the fixed screw rod limiting ring is fixedly connected to a fixed screw rod, the outer side of the fixed screw rod is slidably connected to a sliding ring, the sliding ring is rotatably connected to a connecting rod, the bottom of the connecting rod is fixedly connected to a scraper cleaning block, and the inside of the scraper cleaning block is slidably connected to the scraper.

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

[0007] In a preferred embodiment, an equipment bin is opened on the inner side of the equipment box, an exhaust port is fixedly connected to the left side of the equipment bin, a negative pressure vacuum pump suction port is fixedly connected to the right side of the equipment bin, and an evaporation bin is fixedly connected to the right end of the negative pressure vacuum pump suction port.

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

[0009] In a preferred embodiment, a mother liquid placement tray is slidably connected to the bottom of the evaporation chamber, and a sealing plate is fixedly connected to the outer side of the mother liquid 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 internal seal can be kept tight by the sealing plate.

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

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

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

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

[0015] In a preferred embodiment, a steam collecting bin is fixedly connected above the evaporation bin, and a condensing pipe is fixedly connected above the steam collecting bin.

[0016] By adopting the above technical solution, evaporated water vapor can be collected and enter the condenser for cooling.

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

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

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

[0020] By adopting the above technical solution, the interior of the evaporation chamber can be heated, thereby evaporating the mother liquor.

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

[0022] By adopting the above technical solution, it is convenient to repair equipment.

[0023] In a preferred embodiment, a drain pipe is fixedly connected below the condenser pipe, and a water tank is fixedly connected below the drain pipe.

[0024] By adopting the above technical solution, the water cooled by the condenser can be collected and the 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 the present invention, during the operation of the equipment, the mother liquid to be processed is placed in the mother liquid placement tray, and then the mother liquid placement tray is placed in the bottom of the evaporation bin through the sealing plate. The sealing rubber fixed on the sealing plate can keep the interior of the evaporation bin tightly sealed. Then, the negative pressure vacuum pump is started through the control panel, and the negative pressure vacuum pump will extract the air in the evaporation bin, the steam collection bin, the condenser and the water tank through the negative pressure vacuum pump suction port to maintain the internal low pressure. Then, the hot air blower is started to heat the inside of the evaporation bin through the heating pipe. During the heating and evaporation process, the cylinder will start to drive the motor fixing seat to descend until the bottom of the scraper contacts the mother liquid placement tray. The motor will drive the scraper to rotate through the motor shaft, which can disperse the mother liquid into a thin film, increase the contact area with the hot air, and improve the drying efficiency. When the scraper rotates, the scraper cleaning block and the connecting rod will drive the sliding ring to slide up and down on the outside of the fixed screw rod, thereby driving the scraper cleaning block to slide on the outside of the scraper, which can keep the surface of the scraper clean, prevent the mother liquid from adhering to and corroding the scraper for a long time, and improve the service life of the scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The overall structure of the device of the present application is shown schematically;

[0028] Figure 2 The internal structure of the device equipment bin in the present application is shown schematically;

[0029] Figure 3 The internal structure of the evaporation bin in the device of the present application is shown schematically;

[0030] Figure 4 The structure of the mother liquor placing tray in the device of the present application is shown schematically;

[0031] Figure 5 The structure of the scraper cleaning mechanism in the device of the present application is shown schematically.

[0032] Marked in the figure: 1, equipment box; 2, evaporation bin; 3, air cylinder; 4, motor fixing seat; 5, motor; 6, motor shaft; 7, scraper; 8, fixed screw rod limiting ring; 9, fixed screw rod; 10, sliding ring; 11, connecting rod; 12, scraper cleaning block; 13, hot air blower; 14, heating pipe; 15, steam collection bin; 16, sealing plate; 17, negative pressure vacuum pump; 18, exhaust port; 19, access door; 20, control screen; 21, condensing pipe; 22, drain pipe; 23, water tank; 24, equipment bin; 25, negative pressure vacuum pump suction port; 26, mother liquor placing tray. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] Embodiment:

[0035] Reference Figure 1-5A negative pressure low-temperature drying machine for treating evaporation mother liquor comprises an equipment main body equipment box 1, an evaporation bin 2 is opened inside the equipment box 1, a cylinder 3 is fixedly connected to the top of the evaporation bin 2, a motor fixing seat 4 is fixedly connected to the bottom of the cylinder 3, a motor 5 is fixedly connected to the inner side of the motor fixing seat 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 fixed chain plate machine with a fixed screw limit ring 8 is fixedly connected to the bottom of the fixed screw limit ring 8, a fixed screw 9 is fixedly connected to the outside of the fixed screw 9 with a sliding ring 10, and a connecting rod 11 is rotatably connected to the surrounding of the sliding ring 10, a scraper cleaning block 12 is fixedly connected to the bottom of the connecting rod 11, and a scraper 7 is slidably connected to the inner side of the scraper cleaning block 12, so as to improve the service life of the scraper 7 and the drying efficiency of the equipment.

[0036] Reference Figure 1-5 , put the mother liquid to be processed into the mother liquid placement tray 26, and then put the mother liquid placement tray 26 into the bottom of the evaporation bin 2 through the sealing plate 16. The sealing rubber fixed on the sealing plate 16 can keep the inside of the evaporation bin 2 tightly sealed. Then start the negative pressure vacuum pump 17 through the control panel 20. The negative pressure vacuum pump 17 will extract the air in the evaporation bin 2, the steam collection bin 15, the condenser 21 and the water tank 23 through the negative pressure vacuum pump suction port 25 to maintain the internal low pressure. Then start the hot air blower 13 to heat the inside of the evaporation bin 2 through the heating pipe 14. During the heating and evaporation process The cylinder 3 will start and drive the motor fixing base 4 to descend until the bottom of the scraper 7 contacts the mother liquid placement tray 26. The motor 5 will drive the scraper 7 to rotate through the motor shaft 6, which can disperse the mother liquid into a thin film, increase the contact area with the hot air, and improve the drying efficiency. When the scraper 7 rotates, the scraper cleaning block 12 and the connecting rod 11 will drive the sliding ring 10 to slide up and down on the outside of the fixed screw 9, thereby driving the scraper cleaning block 12 to slide on the outside of the scraper 7, which can keep the surface of the scraper 7 clean, prevent the mother liquid from adhering to and corroding the scraper 7 for a long time, and improve the service life of the scraper 7.

[0037] Reference Figure 1-3 The inside of the equipment box 1 is provided with an equipment compartment 24. The left side of the equipment compartment 24 is fixedly connected to the exhaust port 18. The right side of the equipment compartment 24 is fixedly connected to the negative pressure vacuum pump suction port 25. The right end of the negative pressure vacuum pump suction port 25 is fixedly connected to the evaporation compartment 2. This allows negative pressure to be formed inside the evaporation compartment 2, thereby enabling rapid dehydration.

[0038] Reference Figure 1-4 The bottom of the evaporation bin 2 is slidably connected to a mother liquor placement tray 26, and the outer side of the mother liquor placement tray 26 is fixedly connected to a sealing plate 16. It is convenient to place the mother liquor and take out the dried mother liquor, and the sealing plate 16 can keep the internal seal tight.

[0039] Reference Figure 1-5, the mother liquid is placed on the tray 26 and is slidably connected to the bottom of the scraper 7. The mother liquid can be dispersed into a film to increase the contact area with the hot air.

[0040] Reference Figure 1-2 A control panel 20 is fixedly connected to the front of the device box 1. The operation of the device can be operated through the control panel 20.

[0041] Reference Figure 1-2 The top of the evaporation bin 2 is fixedly connected with a steam collecting bin 15, and the top of the steam collecting bin 15 is fixedly connected with a condenser 21. The evaporated water vapor can be collected and enters the condenser 21 for cooling.

[0042] Reference Figure 1-2 The left side of the equipment box 1 is fixedly connected with an exhaust port 18, and the inner side of the exhaust port 18 is fixedly connected with a negative pressure vacuum pump 17. The air extracted by the negative pressure vacuum pump 17 can be discharged.

[0043] Reference Figure 1-3 A heating pipe 14 is fixedly connected to the inside of the evaporation bin 2, one end of the heating pipe 14 is fixedly connected to a hot air blower 13, and a negative pressure vacuum pump 17 is fixedly connected below the hot air blower 13. The inside of the evaporation bin 2 can be heated to evaporate the mother liquor.

[0044] Reference Figure 1 The front of the equipment box 1 is rotatably connected with an inspection door 19. It is convenient to inspect the equipment.

[0045] Reference Figure 1-2 A drain pipe 22 is fixedly connected to the bottom of the condenser 21, and a water tank 23 is fixedly connected to the bottom of the drain pipe 22. The water cooled by the condenser 21 can be collected, and the negative pressure of the evaporation bin 2 can be maintained.

[0046] The implementation principle of a negative pressure low temperature drying machine for treating evaporation mother liquor according to the present invention is as follows:

[0047] During operation of the equipment, the mother liquid to be processed is placed in the mother liquid placement tray 26, and then the mother liquid placement tray 26 is placed in the bottom of the evaporation bin 2 through the sealing plate 16. The sealing rubber fixed on the sealing plate 16 can keep the inside of the evaporation bin 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 in the evaporation bin 2, the steam collection bin 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 blower 13 is started to heat the inside of the evaporation bin 2 through the heating pipe 14. During the evaporation process, the cylinder 3 will start and drive the motor fixing base 4 to descend until the bottom of the scraper 7 contacts the mother liquid placement tray 26. The motor 5 will drive the scraper 7 to rotate through the motor shaft 6, which can disperse the mother liquid into a thin film, increase the contact area with the hot air, and improve the drying efficiency. When the scraper 7 rotates, the scraper cleaning block 12 and the connecting rod 11 will drive the sliding ring 10 to slide up and down on the outside of the fixed screw 9, thereby driving the scraper cleaning block 12 to slide on the outside of the scraper 7, which can keep the surface of the scraper 7 clean, prevent the mother liquid from long-term adhesion and corrosion of the scraper 7, and improve the service life of the scraper 7.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A negative pressure low temperature drying machine for treating evaporation mother liquor, comprising a main equipment box (1), characterized in that: An evaporation chamber (2) is provided inside the equipment box (1), the top of the evaporation chamber (2) is fixedly connected to a cylinder (3), the bottom of the cylinder (3) is fixedly connected to a motor fixing seat (4), the inner side of the motor fixing seat (4) is fixedly connected to a motor (5), the bottom of the motor (5) is rotatably connected to a motor shaft (6), the bottom of the motor shaft (6) is fixedly connected to a scraper (7), the bottom of the motor fixing seat (4) is fixed with a fixed screw rod limiting ring (8), the bottom of the fixed screw rod limiting ring (8) is fixedly connected to a fixed screw rod (9), the outer side of the fixed screw rod (9) is slidably connected to a sliding ring (10), the sliding ring (10) is rotatably connected to a connecting rod (11), the bottom of the connecting rod (11) is fixedly connected to a scraper cleaning block (12), the inner side of the scraper cleaning block (12) is slidably connected to the scraper (7).

2. A negative pressure low temperature dryer for treating evaporation mother liquor according to claim 1, characterized in that: An equipment bin (24) is provided on the inner side of the equipment box (1), an exhaust port (18) is fixedly connected to the left side of the equipment bin (24), a negative pressure vacuum pump suction port (25) is fixedly connected to the right side of the equipment bin (24), and an evaporation bin (2) is fixedly connected to the right end of the negative pressure vacuum pump suction port (25).

3. The negative pressure low temperature dryer for treating evaporation mother liquor according to claim 1, characterized in that: The bottom of the evaporation bin (2) is slidably connected to a mother liquid placement tray (26), and the outer side of the mother liquid placement tray (26) is fixedly connected to a sealing plate (16).

4. The negative pressure low temperature dryer for treating evaporation mother liquor according to claim 1, characterized in that: A mother liquid placement tray (26) is slidably connected below the scraper (7).

5. The negative pressure low temperature dryer for treating evaporation mother liquor according to claim 1, characterized in that: A control panel (20) is fixedly connected to the front of the equipment box (1).

6. The negative pressure low temperature dryer for treating evaporation mother liquor according to claim 1, characterized in that: A steam collecting bin (15) is fixedly connected above the evaporation bin (2), and a condensing pipe (21) is fixedly connected above the steam collecting bin (15).

7. The negative pressure low temperature dryer for treating evaporation mother liquor according to claim 1, characterized in that: An exhaust port (18) is fixedly connected to the left side of the equipment box (1), and a negative pressure vacuum pump (17) is fixedly connected to the inner side of the exhaust port (18).

8. The negative pressure low temperature dryer for treating evaporation mother liquor according to claim 1, characterized in that: A heating pipe (14) is fixedly connected to the inner side of the evaporation bin (2), one end of the heating pipe (14) is fixedly connected to a hot air blower (13), and a negative pressure vacuum pump (17) is fixedly connected below the hot air blower (13).

9. The negative pressure low temperature dryer for treating evaporation mother liquor according to claim 1, characterized in that: An inspection door (19) is rotatably connected to the front of the equipment box (1).

10. The negative pressure low temperature dryer for treating evaporation mother liquor according to claim 1, characterized in that: A drain pipe (22) is fixedly connected below the condenser pipe (21), and a water tank (23) is fixedly connected below the drain pipe (22).

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