Ethylene glycol waste liquid recovery device

Abstract

The utility model belongs to the field of ethylene glycol waste liquid treatment, specifically is a kind of ethylene glycol waste liquid recovery device, including jar body, the top of jar body is provided with feeding valve, the outer wall of jar body is provided with discharge valve, the inside of jar body is hollowed out cavity, the top of jar body is provided with feeding valve;The utility model provides a kind of ethylene glycol waste liquid recovery device, by motor control U-shaped frame rotation, reciprocating left and right movement of sliding plate, whenever second discharge port moves to the above of third discharge port, flocculating agent in receiving cavity falls into jar body along second discharge port and third discharge port, reciprocate from this, with the start of motor, flocculating agent in cavity is intermittently dosed into jar body, it is convenient to be mixed evenly with ethylene glycol waste liquid in jar body, improve the sedimentation effect of suspended solids in ethylene glycol waste liquid, while U-shaped frame rotation, drive the rotation of shaft, make stirring vane rotate, by the rotation of stirring vane, the fusion of flocculating agent and ethylene glycol waste liquid can be accelerated.

Description

Technical Field

[0001] This utility model belongs to the field of ethylene glycol waste liquid treatment, specifically an ethylene glycol waste liquid recovery device. Background Technology

[0002] Ethylene glycol is mainly used in the production of polyester, polyester resin, hygroscopic agents, plasticizers, surfactants, synthetic fibers, cosmetics, and antifreeze. The freezing point of ethylene glycol varies with its concentration in aqueous solution. Below 60%, the freezing point decreases as the concentration increases. However, above 60%, the freezing point increases with increasing ethylene glycol concentration. At a 60% concentration, the freezing point can drop to -48.3℃. Due to these properties, ethylene glycol is frequently used as an antifreeze on offshore platforms such as oil platforms.

[0003] A search revealed a Chinese patent (authorization announcement number CN222411258U) disclosing a desalination and dehydration recovery device for ethylene glycol waste liquid. This patented technology is used to recover ethylene glycol from ethylene glycol waste liquid containing sodium chloride and water. The recovery device includes an evaporation crystallization unit, a desalination unit, a distillation dehydration unit, a condensate collection unit, and a vacuum unit connected in sequence. The evaporation crystallization unit is used to evaporate and concentrate the ethylene glycol waste liquid, precipitating sodium chloride crystals. The desalination unit is used to separate the concentrated precipitated sodium chloride crystals. The distillation dehydration unit is used to separate ethylene glycol and water. The condensate collection unit is used to collect the condensate from the distillation unit. This invention employs a vacuum single-effect process in the evaporation crystallization section, with a specially designed enlarged separator to effectively prevent the entrainment of sodium chloride-containing droplets. The evaporation crystallization unit and the distillation dehydration unit control high vacuum levels, saving energy and being easy to implement. Furthermore, the device has a simple process flow, a high degree of automation, and low operating costs, meeting the requirements of sustainable development and can be widely applied in actual industrial production processes.

[0004] The core objective of ethylene glycol waste liquid recycling is to remove impurities from the waste liquid through separation and purification processes, so that the ethylene glycol purity meets the reuse standards. Waste liquid often contains a large number of suspended impurities, colloids, or pollutants. Existing technologies mostly add flocculants to treat suspended matter in ethylene glycol, allowing the suspended matter to settle before further treatment. However, existing technologies are not convenient for controlling the addition of flocculants. If flocculants are added all at once, too much flocculant is difficult to react evenly with the suspended matter in the ethylene glycol, causing most of the flocculant to lose its effect. Moreover, after the suspended matter comes into contact with the flocculant and settles, it accumulates at the bottom of the ethylene glycol waste liquid, making it difficult to extract. Therefore, this utility model provides an ethylene glycol waste liquid recycling device. Utility Model Content

[0005] To address the shortcomings of existing technologies, which often involve adding flocculants to settle suspended solids in ethylene glycol before further treatment, this invention proposes an ethylene glycol wastewater recovery device. This addresses the problem that existing technologies often rely on adding flocculants simultaneously to allow the suspended solids to settle before further treatment. However, current technologies are not conducive to controlling the flocculant dosage. Adding too much flocculant at once results in excessive flocculant that cannot react evenly with the suspended solids in the ethylene glycol, leading to the loss of most of the flocculant's effectiveness. Furthermore, the suspended solids, after settling in contact with the flocculant, accumulate at the bottom of the ethylene glycol wastewater, making it difficult to extract.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The ethylene glycol waste liquid recovery device of this utility model includes a tank, a feeding valve is provided at the top of the tank, a discharge valve is provided on the outer wall of the tank, a cavity is opened inside the tank, an inlet valve is provided at the top of the tank and the inlet valve communicates with the cavity, a chute is provided inside the tank and below the cavity, a motor is fixedly connected to the top of the tank, the output end of the motor extends into the interior of the chute and is fixedly connected to a U-shaped frame, a rotating shaft is fixedly connected to the bottom of the U-shaped frame, the bottom of the rotating shaft extends into the interior of the tank and is fixedly connected to a stirring blade, and a material picking assembly is provided at the bottom of the tank.

[0007] Preferably, a sliding plate is slidably connected to the inner wall of the chute, a receiving cavity is opened inside the sliding plate, a first inlet is opened at the top of the sliding plate, a second outlet is opened at the bottom of the sliding plate, both the first inlet and the second outlet communicate with the receiving cavity, a first outlet is opened inside the tank body, the top of the first outlet communicates with the cavity, the bottom of the first outlet communicates with the chute, the first outlet is located above the first inlet, and a third outlet is opened inside the tank body and at the bottom of the chute, the third outlet is installed in a staggered manner with the second outlet.

[0008] Preferably, the outer wall of the U-shaped frame is rotatably connected to a connecting shaft, one end of which is rotatably connected to the slide plate.

[0009] Preferably, the material receiving component includes a discharge port, which is located at the bottom of the inner wall of the tank. An electric telescopic rod is fixedly connected inside the tank. A receiving plate is fixedly connected to the output end of the electric telescopic rod. The receiving plate is located inside the discharge port and is slidably connected to the tank. A storage chamber is provided inside the receiving plate. The storage chamber is installed in a staggered manner with the discharge port. A fourth discharge port is provided at the bottom of the tank. A sealing unit is provided inside the tank.

[0010] Preferably, the sealing unit includes a baffle plate, which is disposed inside the tank and above the receiving plate. The baffle plate is slidably connected to the tank, and a linkage unit is provided between the baffle plate and the receiving plate.

[0011] Preferably, the linkage unit includes a rotating rod, which is fixedly installed inside the tank and located between the baffle and the receiving plate. A gear is rotatably connected to the outer wall of the rotating rod. A first rack is fixedly connected to the top of the receiving plate, and a second rack is fixedly connected to the bottom of the baffle. Both the first rack and the second rack are meshed with the gear.

[0012] Preferably, the outer wall of the tank is provided with a control panel, and the motor and the electric telescopic rod are both electrically connected to the control panel.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The ethylene glycol waste liquid recovery device of this utility model uses a motor to control the rotation of a U-shaped frame, causing the slide plate to move back and forth. Whenever the second discharge port moves above the third discharge port, the flocculant in the receiving chamber falls into the tank along the second and third discharge ports. This process is repeated. With the start of the motor, the flocculant in the cavity is intermittently and quantitatively sprinkled into the tank, which facilitates uniform mixing with the ethylene glycol waste liquid in the tank and improves the settling effect of suspended solids in the ethylene glycol waste liquid. At the same time as the U-shaped frame rotates, it drives the rotating shaft to rotate, which causes the stirring blade to rotate. The rotation of the stirring blade can accelerate the fusion of flocculant and ethylene glycol waste liquid.

[0015] 2. The ethylene glycol waste liquid recovery device of this utility model uses the centrifugal force generated by the rotation of the stirring blades to rotate the settled suspended matter. As the stirring blades stop rotating, the centrifugal force gradually disappears, causing the settled suspended matter in the tank to move towards the discharge port. The storage chamber is moved below the discharge port by the electric telescopic rod, and the settled suspended matter in the tank can accumulate in the storage chamber along the discharge port. The storage chamber is moved above the fourth discharge port by the electric telescopic rod, which facilitates the discharge of the settled suspended matter accumulated in the storage chamber from the tank. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a perspective view of the tank body and the feed valve used in conjunction with an embodiment of this utility model;

[0018] Figure 2 This is a cross-sectional view of the rotating shaft and stirring rod used in conjunction with the present invention embodiment;

[0019] Figure 3 This is an exploded view of the baffle and receiving plate used in conjunction with each other, as provided in this embodiment of the utility model.

[0020] Figure 4 This is a perspective view of the U-shaped frame and the skateboard used in conjunction with the embodiment of this utility model;

[0021] Figure 5 yes Figure 2 Enlarged view of point A in the middle;

[0022] Figure 6 yes Figure 2 Enlarged view of point B in the middle.

[0023] In the picture:

[0024] 1. Tank body; 11. Feed valve; 12. Discharge valve; 13. Motor; 14. U-shaped frame; 15. Rotary shaft; 16. Agitator blade; 17. Cavity; 18. Feed valve; 19. Control panel;

[0025] 2. Slide groove; 21. Slide plate; 22. Receiving chamber; 23. First discharge port; 24. First feed port; 25. Second discharge port; 26. Third discharge port; 27. Connecting shaft;

[0026] 3. Discharge port; 31. Electric telescopic rod; 32. Receiving plate; 33. Storage chamber; 34. Fourth discharge port; 35. Baffle; 36. Rotating rod; 37. Gear; 38. First rack; 39. Second rack. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1 to 6 As shown, this utility model provides a technical solution: an ethylene glycol waste liquid recovery device, including a tank 1. A feeding valve 11 is installed at the top of the tank 1, and a discharge valve 12 is installed on the outer wall of the tank 1. A cavity 17 is formed inside the tank 1. An inlet valve 18 is installed at the top of the tank 1, communicating with the cavity 17. A chute 2 is formed inside the tank 1 and below the cavity 17. A motor 13 is fixedly connected to the top of the tank 1. The output end of the motor 13 extends into the chute 2 and is fixedly connected to a U-shaped frame 14. A rotating shaft 15 is fixedly connected to the bottom of the U-shaped frame 14. The bottom of the rotating shaft 15 extends into the tank 1 and is fixedly connected to a stirring blade 16. A material-collecting assembly is provided at the bottom of the tank 1. The inner wall of the chute 2... A sliding plate 21 is movably connected. The sliding plate 21 has a receiving cavity 22 inside. The top of the sliding plate 21 has a first feed port 24, and the bottom of the sliding plate 21 has a second discharge port 25. Both the first feed port 24 and the second discharge port 25 are connected to the receiving cavity 22. The tank body 1 has a first discharge port 23 inside. The top of the first discharge port 23 is connected to the cavity 17, and the bottom of the first discharge port 23 is connected to the chute 2. The first discharge port 23 is located above the first feed port 24. The tank body 1 has a third discharge port 26 inside and at the bottom of the chute 2. The third discharge port 26 is installed in a staggered manner with the second discharge port 25. The outer wall of the U-shaped frame 14 is rotatably connected to a connecting shaft 27. One end of the connecting shaft 27 is rotatably connected to the sliding plate 21.

[0032] Through the above technical solution, ethylene glycol waste liquid is loaded into tank 1 via feeding valve 11, and flocculant is loaded into cavity 17 via feed valve 18. The flocculant loaded into cavity 17 enters receiving cavity 22 via first discharge port 23 and first feed port 24. Motor 13 is started, driving U-shaped frame 14 to rotate. Through the connecting shaft 27, slide plate 21 moves back and forth left and right. When slide plate 21 moves to the left, it drives second discharge port 25 down to third discharge port 26. When second discharge port 25 moves to third discharge port 26... When the material is above the inlet 26, the flocculant in the receiving chamber 22 falls into the tank 1 along the second discharge port 25 and the third discharge port 26. This process is repeated. As the motor 13 is started, the flocculant in the cavity 17 is intermittently and quantitatively sprinkled into the tank 1, which facilitates uniform mixing with the ethylene glycol waste liquid in the tank 1 and improves the settling effect on the suspended solids in the ethylene glycol waste liquid. At the same time as the U-shaped frame 14 rotates, it drives the rotating shaft 15 to rotate, which causes the stirring blade 16 to rotate. The rotation of the stirring blade 16 can accelerate the fusion of flocculant and ethylene glycol waste liquid.

[0033] Specifically, the material handling assembly includes a discharge port 3, which is located at the bottom of the inner wall of the tank 1. An electric telescopic rod 31 is fixedly connected inside the tank 1. A receiving plate 32 is fixedly connected to the output end of the electric telescopic rod 31. The receiving plate 32 is located inside the discharge port 3 and is slidably connected to the tank 1. A storage chamber 33 is formed inside the receiving plate 32, and the storage chamber 33 is offset from the discharge port 3. A fourth discharge port 34 is formed at the bottom of the tank 1. A sealing unit is provided inside the tank 1; the sealing unit includes a baffle 35. The baffle 35 is slidably connected to the tank body 1 and located above the receiving plate 32 inside the tank body 1. A linkage unit is provided between the baffle 35 and the receiving plate 32. The linkage unit includes a rotating rod 36, which is fixedly installed inside the tank body 1 and located between the baffle 35 and the receiving plate 32. A gear 37 is rotatably connected to the outer wall of the rotating rod 36. A first rack 38 is fixedly connected to the top of the receiving plate 32, and a second rack 39 is fixedly connected to the bottom of the baffle 35. Both the first rack 38 and the second rack 39 are meshed with the gear 37.

[0034] Through the above technical solution, when flocculant is added to tank 1, the baffle 35 blocks the outlet 3. After the suspended matter in the ethylene glycol waste liquid settles, the motor 13 is turned off. The centrifugal force generated by the rotation of the stirring blade 16 causes the settled suspended matter to rotate. As the stirring blade 16 stops rotating, the centrifugal force gradually disappears, causing the settled suspended matter in tank 1 to move towards the outlet 3. At the same time, the receiving plate 32 is moved by the electric telescopic rod 31, causing the storage chamber 33 to move below the outlet 3. As the receiving plate 32 moves, it drives the first rack 38 to move, causing the gear 37 to rotate, which in turn drives the second rack 39 to move in the opposite direction, causing the baffle 35 to move towards the outlet 3. The baffle 35 moves in the reverse direction and separates from the discharge port 3. As a result, the suspended solids settled in the tank 1 can accumulate in the storage chamber 33 along the discharge port 3. Then, the receiving plate 32 is moved back by the electric telescopic rod 31, so that the storage chamber 33 is moved above the fourth discharge port 34. This makes it easier to discharge the settled suspended solids accumulated in the storage chamber 33 from the tank 1. While the receiving plate 32 moves back, the baffle 35 blocks the discharge port 3 again through the cooperation of the first rack 38 and the second rack 39. After the suspended solids in the ethylene glycol waste liquid are cleaned up, the remaining ethylene glycol waste liquid in the tank 1 can be taken out through the discharge valve 12.

[0035] Specifically, a control panel 19 is provided on the outer wall of the tank body 1, and the motor 13 and the electric telescopic rod 31 are all electrically connected to the control panel 19.

[0036] Through the above technical solution, the start and stop of the motor 13 and the electric telescopic rod 31 can be controlled through the control panel 19.

[0037] In use, ethylene glycol waste liquid is loaded into tank 1 through feeding valve 11, and flocculant is loaded into cavity 17 through feed valve 18. The flocculant in cavity 17 enters receiving cavity 22 through first discharge port 23 and first feed port 24. Motor 13 is started, driving U-shaped frame 14 to rotate. Through the connecting shaft 27, slide plate 21 moves back and forth left and right. When slide plate 21 moves to the left, it drives second discharge port 25 down to third discharge port 26. When second discharge port 25 moves above third discharge port 26, the flocculant in receiving cavity 22 flows along... The flocculant is fed into the tank 1 through the second discharge port 25 and the third discharge port 26. This process repeats continuously. With the start of the motor 13, the flocculant in the cavity 17 is intermittently and quantitatively added into the tank 1, facilitating uniform mixing with the ethylene glycol waste liquid in the tank 1 and improving the settling effect on suspended solids in the ethylene glycol waste liquid. Simultaneously, the rotation of the U-shaped frame 14 drives the rotating shaft 15 to rotate, causing the stirring blades 16 to rotate. The rotation of the stirring blades 16 accelerates the fusion of the flocculant and the ethylene glycol waste liquid. When adding flocculant to the tank 1, the baffle 35 blocks the discharge port 3, preventing further mixing of the flocculant with the ethylene glycol waste liquid. After the suspended solids in the liquid settle, the motor 13 is turned off. The centrifugal force generated by the rotation of the stirring blade 16 causes the settled suspended solids to rotate. As the stirring blade 16 stops rotating, the centrifugal force gradually disappears, causing the settled suspended solids in the tank 1 to move towards the discharge port 3. At the same time, the receiving plate 32 is moved by the electric telescopic rod 31, causing the storage chamber 33 to move below the discharge port 3. As the receiving plate 32 moves, it drives the first rack 38 to move, causing the gear 37 to rotate, which in turn drives the second rack 39 to move in the opposite direction, causing the baffle 35 to move in the opposite direction. After the baffle 35 moves in the opposite direction, it is aligned with the discharge port 3. Separation is achieved, allowing the suspended solids settling in tank 1 to accumulate in storage chamber 33 along discharge port 3. Then, the receiving plate 32 is moved back by the electric telescopic rod 31, moving storage chamber 33 above the fourth discharge port 34. This facilitates the discharge of the settled suspended solids accumulated in storage chamber 33 from tank 1. As the receiving plate 32 moves back, the baffle 35 blocks discharge port 3 again through the cooperation of the first rack 38 and the second rack 39. After the suspended solids in the ethylene glycol waste liquid are cleaned, the remaining ethylene glycol waste liquid in tank 1 can be removed through discharge valve 12.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for recovering ethylene glycol waste liquid, characterized in that, Includes a tank body (1), a feeding valve (11) is provided on the top of the tank body (1), a discharge valve (12) is provided on the outer wall of the tank body (1), a cavity (17) is opened inside the tank body (1), and a feed valve (18) is provided on the top of the tank body (1), and the feed valve (18) is connected to the cavity (17); A chute (2) is provided inside the tank (1) and below the cavity (17). A motor (13) is fixedly connected to the top of the tank (1). The output end of the motor (13) extends into the chute (2) and is fixedly connected to a U-shaped frame (14). The bottom of the U-shaped frame (14) is fixedly connected to a rotating shaft (15), the bottom of the rotating shaft (15) extends into the interior of the tank (1) and is fixedly connected to a stirring blade (16), and the bottom of the tank (1) is provided with a material handling component.

2. The ethylene glycol waste liquid recovery device according to claim 1, characterized in that, The inner wall of the chute (2) is slidably connected to a slide plate (21). The slide plate (21) has a receiving cavity (22) inside. The top of the slide plate (21) has a first feed port (24), and the bottom of the slide plate (21) has a second discharge port (25). Both the first feed port (24) and the second discharge port (25) are connected to the receiving cavity (22).

3. The ethylene glycol waste liquid recovery device according to claim 2, characterized in that, The tank (1) has a first discharge port (23) inside. The top of the first discharge port (23) is connected to the cavity (17), and the bottom of the first discharge port (23) is connected to the chute (2).

4. The ethylene glycol waste liquid recovery device according to claim 3, characterized in that, The first discharge port (23) is located above the first feed port (24). The third discharge port (26) is provided inside the tank body (1) and at the bottom of the chute (2). The third discharge port (26) is installed in a staggered manner with the second discharge port (25).

5. The ethylene glycol waste liquid recovery device according to claim 1, characterized in that, The outer wall of the U-shaped frame (14) is rotatably connected to a connecting shaft (27), one end of which is rotatably connected to the slide plate (21).

6. The ethylene glycol waste liquid recovery device according to claim 1, characterized in that, The material receiving component includes a discharge port (3), which is located at the bottom of the inner wall of the tank (1). An electric telescopic rod (31) is fixedly connected inside the tank (1), and a receiving plate (32) is fixedly connected to the output end of the electric telescopic rod (31).

7. The ethylene glycol waste liquid recovery device according to claim 6, characterized in that, The receiving plate (32) is located inside the discharge port (3) and is slidably connected to the tank body (1). The receiving plate (32) has a storage chamber (33) inside. The storage chamber (33) is installed in a staggered manner with the discharge port (3). The bottom of the tank body (1) has a fourth discharge port (34). The tank body (1) is equipped with a sealing unit inside.

8. The ethylene glycol waste liquid recovery device according to claim 7, characterized in that, The sealing unit includes a baffle (35), which is disposed inside the tank (1) and above the receiving plate (32). The baffle (35) is slidably connected to the tank (1), and a linkage unit is provided between the baffle (35) and the receiving plate (32).

9. The ethylene glycol waste liquid recovery device according to claim 8, characterized in that, The linkage unit includes a rotating rod (36), which is fixedly installed inside the tank (1) and located between the baffle (35) and the receiving plate (32).

10. The ethylene glycol waste liquid recovery device according to claim 9, characterized in that, The outer wall of the rotating rod (36) is rotatably connected to a gear (37), the top of the receiving plate (32) is fixedly connected to a first rack (38), and the bottom of the baffle (35) is fixedly connected to a second rack (39). Both the first rack (38) and the second rack (39) are meshed with the gear (37).

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