Sewage treatment equipment for hydrofluoroether production

Abstract

The invention belongs to the technical field of green chemical production, and provides sewage treatment equipment for hydrofluoroether production, which comprises a shell, two groups of symmetrically distributed precipitation cylinders are fixedly mounted in the shell, the bottom of the shell is communicated with a biological filter cartridge, and a biological membrane is arranged in the biological filter cartridge. A water inlet pipe communicated with the precipitation cylinder is fixedly mounted on the shell, a first filter screen is fixedly mounted in the water inlet pipe, and a stirring rod is arranged in the precipitation cylinder. Compared with the prior art, the sewage treatment device disclosed by the invention has the beneficial effects that through the arrangement of the collecting cylinder and the filter cylinder, rapid separation of precipitated impurities and upper-layer sewage is realized, and residues of floccules in the sewage are reduced, so that the sewage can be rapidly discharged, and the residual floccules can be filtered and intercepted again through the filter cylinder in the subsequent rapid discharging process; the probability of residual impurities in the sewage is further reduced, and the sewage treatment effect is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of green chemical production, and in particular relates to sewage treatment equipment used in the production of hydrofluoroether. Background Art

[0002] Hydrofluoroether is a class of organic compounds composed of hydrogen, fluorine, carbon and oxygen elements. It usually exists in the form of colorless, odorless gas. Hydrofluoroether can be synthesized by the addition reaction of fluorinated unsaturated hydrocarbons and alcohols. During the synthesis process, some by-products and wastewater are produced, which need to be treated with appropriate environmental protection measures.

[0003] When treating wastewater, sedimentation and filtration are generally performed first. When using existing equipment, after precipitation with flocculants, the sewage on the top of the container needs to be poured out first, and then the impurities at the bottom need to be poured out and cleaned, which results in a slow separation of impurities and sewage. In addition, impurities may flow with the sewage during the pouring process, resulting in residual impurities in the sewage, reducing the sewage treatment effect. Summary of the invention

[0004] The object of the present invention is to provide a sewage treatment device for hydrofluoroether production, aiming to solve the technical problems in the prior art that the separation speed of impurities and sewage is slow and the sewage contains residual impurities.

[0005] The present invention is implemented as follows: a sewage treatment device for hydrofluoroether production comprises a housing, two groups of symmetrically distributed sedimentation cylinders are fixedly installed in the housing, a biological filter cylinder is connected to the bottom of the housing and a biological membrane is arranged in the biological filter cylinder, a water inlet pipe connected to the sedimentation cylinder is fixedly installed on the housing, a first filter screen is fixedly installed in the water inlet pipe, and a stirring rod is arranged in the sedimentation cylinder; The bottom of the sedimentation cylinder is an open structure and a fixed baffle is fixedly installed at the lower end of the sedimentation cylinder, and a movable baffle is slidably installed on the fixed baffle. Notches are provided on both the fixed baffle and the movable baffle, and in an initial state, the fixed baffle contacts and closes the lower end of the sedimentation cylinder. A first telescopic member is fixedly installed in the middle of the top side wall of the shell, a second rotating power member is fixedly installed at the output end of the first telescopic member, and a rotating frame with a cross-shaped structure is fixedly installed at the output end of the second rotating power member, a bottom plate is fixedly installed at the end of the rotating frame, and a top rod is fixedly installed in the middle of the bottom plate, wherein filter cartridges are fixedly installed on two groups of symmetrical bottom plates, and collecting cartridges are fixedly installed on the other two groups of bottom plates, a through groove is provided at the position where the collecting cartridge contacts the bottom plate, and a second filter screen is fixedly installed in the through groove.

[0006] Further technical solution: A stirring shaft is rotatably mounted on the top side wall of the shell, the stirring shaft is coaxially arranged with the sedimentation cylinder and the stirring rod is fixedly mounted on the stirring shaft, and a first rotating power member that drives the stirring shaft to rotate is fixedly mounted on the shell.

[0007] Further technical solution: the notches on the fixed baffle and the movable baffle are spaced apart, a sliding rod is slidably installed in the middle of the fixed baffle, the top of the sliding rod is fixedly connected to the movable baffle, and a first elastic member distributed around the sliding rod is fixedly installed on the surface of the fixed baffle away from the movable baffle, and one end of the first elastic member away from the fixed baffle is fixedly connected to the end of the sliding rod.

[0008] Further technical solution: the outer diameters of the filter cartridge and the collecting cartridge are the same as the inner diameter of the sedimentation cartridge, and the outer diameters of the filter cartridge and the collecting cartridge are smaller than the diameter of the bottom plate.

[0009] Further technical solution: A second telescopic member is fixedly installed on the top side wall of the shell, and a lifting plate is fixedly installed on the output end of the second telescopic member. The lifting plate is perpendicular to the plane formed by the axes of the two sets of sedimentation cylinders. Pressure plates are provided at both ends of the lifting plate, and a through hole is provided in the middle of the pressure plate. The diameter of the pressure plate is the same as the inner diameter of the filter cylinder and the collection cylinder.

[0010] Further technical solution: A third rotating power component is fixedly installed at both ends of the lifting plate, a connecting frame is fixedly installed at the output end of the third rotating power component, and the connecting frame is fixedly connected to the pressing plate.

[0011] Further technical solution: A lifting ring is provided on the pressure plate, which is coaxially arranged with the pressure plate. A plurality of mounting plates distributed in a circular array around its axis are fixedly installed on the lifting ring. The mounting plates are distributed along the radial direction of the lifting ring. A plurality of pressing blocks are fixedly installed on the surface of the mounting plate close to the pressure plate. Gaps are provided between the pressing blocks. The pressing blocks penetrate the pressure plate and are in sliding contact with the pressure plate. A containing groove is provided at the end of the pressing block away from the mounting plate.

[0012] Further technical solution: Multiple groups of symmetrically distributed guide columns are fixedly installed on the pressure plate, the guide columns pass through the lifting ring and are slidably connected to the lifting ring, and a second elastic member distributed around the guide columns is fixedly installed on the pressure plate, and the end of the second elastic member away from the pressure plate is fixedly connected to the lifting ring.

[0013] Further technical solution: an observation window is provided on the side wall of the shell at a position corresponding to the pressure plate, a support plate is rotatably installed in the observation window, a dust collecting tube is fixedly installed on one end of the support plate away from the side wall of the shell, the inner diameter of the dust collecting tube is the same as the outer diameter of the pressure plate, and a third telescopic part is rotatably installed on the shell to drive the support plate to rotate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. After the sedimentation is completed, the first telescopic member drives the rotating frame to move downward by a set distance, so that the second filter screen moves out of the sedimentation cylinder. At this time, the sewage in the collection cylinder can flow out through the second filter screen. When the sewage in the sedimentation cylinder flows downward, it can drive the flocculants on the fixed baffle and the movable baffle to move into the collection cylinder. After the set time, the rotating frame continues to descend. When the top rod is separated from the sliding rod, the movable baffle contacts the fixed baffle to close the lower end of the sedimentation cylinder. When the upper end of the collection cylinder leaves the sedimentation cylinder, it stops descending. At this time, the second rotating power member drives the rotating frame to rotate 90 degrees, so that the filter cartridge moves to the bottom of the sedimentation cylinder. The rotating frame then moves upward again to make the top rod contact with the sliding rod and push the movable baffle away from the fixed baffle to the set position. At this time, the bottom plate is not in contact with the lower end of the sedimentation cylinder, and the sewage in the sedimentation cylinder can pass through the filter cylinder and flow out. The small amount of flocs remaining in the sedimentation cylinder will be filtered by the filter cylinder, thereby realizing the rapid separation of precipitated impurities and upper sewage and reducing the residual flocs in the sewage, so that the sewage can be discharged quickly. In the subsequent rapid discharge process, the residual flocs can be filtered and intercepted again by the filter cylinder, further reducing the probability of residual impurities in the sewage and improving the sewage treatment effect.

[0015] 2. When the collecting cylinder or filter cylinder collects impurities from the sedimentation cylinder and moves to the bottom of the pressure plate and stops, the collecting cylinder or filter cylinder is located directly below the pressure plate. The second telescopic member drives the lifting plate to move downward so that the pressure plate enters the collecting cylinder or filter cylinder. After the lower end of the pressure block contacts the bottom plate, the pressure plate continues to descend until the pressure plate contacts the bottom plate. At this time, the second elastic member will be stretched, so that the impurities in the collecting cylinder or filter cylinder can be squeezed through the pressure plate. At the same time, the speed of sewage discharge in the collecting cylinder can be accelerated, the sewage content carried by impurities can be reduced, the workload of subsequent treatment of impurities can be reduced, a large amount of sewage can be avoided from not participating in subsequent filtration treatment, and the effect of sewage treatment can be improved.

[0016] 3. After the extrusion is completed, the pressing plate moves upward a set distance and is located in the collecting cylinder or the filter cylinder. At this time, under the action of the second elastic member, the pressing block is always in contact with the bottom plate, and the pressing plate is driven to rotate by the third rotating power member. The pressing plate rotates toward the direction of the opening of the holding tank, and the pressing plate drives the pressing block to rotate. Since the pressing block is in close contact with the bottom plate, the pressing block can move the flocs on the bottom plate to the holding tank during the rotation process, so that the flocs on the bottom plate after dehydration can be cleaned through multiple groups of pressing blocks, ensuring the clean state of the collecting cylinder or the filter cylinder, reducing the probability of blockage or impurities re-entering the sewage when the collecting cylinder or the filter cylinder is located below the sedimentation cylinder, ensuring the smooth flow of sewage, and improving the sewage treatment effect.

[0017] 4. After the pressure plate is reset, the third telescopic part extends to drive the support plate to rotate, so that the dust collecting barrel moves to the bottom of the pressure plate. At this time, the second telescopic part drives the pressure plate to move downward into the dust collecting barrel, and then the second rotating power part drives the pressure plate and the pressure block to rotate in the opposite direction. Since the opening of the holding groove is opposite to the rotation direction, the pressure block cannot provide sufficient friction to the impurities in the holding groove during the rotation process. Then, under the action of centrifugal force, the impurities will detach from the holding groove and fall into the dust collecting barrel, thereby cleaning the impurities on the pressure block and preventing the impurities from entering the collection barrel or filter barrel again, ensuring the cleanliness of the pressure block, improving the cleaning effect of the pressure block on the collection barrel or filter barrel, and further improving the sewage treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the structure inside the shell of the present invention.

[0020] Figure 3 It is a schematic diagram of the structure inside the sedimentation cylinder of the present invention.

[0021] Figure 4 It is a structural schematic diagram of the fixed baffle in the present invention.

[0022] Figure 5 It is a schematic diagram of the structure of the rotating frame in the present invention.

[0023] Figure 6 It is a structural schematic diagram of the lifting plate in the present invention.

[0024] Figure 7 It is a structural schematic diagram of the pressure plate in the present invention.

[0025] Figure 8 It is a schematic diagram of the structure of the pressing block in the present invention.

[0026] In the attached drawings: 1. shell; 2. sedimentation cylinder; 3. water inlet pipe; 4. first filter screen; 5. first rotating power member; 6. stirring shaft; 7. stirring rod; 8. fixed baffle; 9. movable baffle; 10. slide bar; 11. first elastic member; 12. first telescopic member; 13. second rotating power member; 14. rotating frame; 15. bottom plate; 16. filter cartridge; 17. collecting cylinder; 18. second filter screen; 19. top rod; 20. second telescopic member; 21. lifting plate; 22. third rotating power member; 23. connecting frame; 24. pressing plate; 25. lifting ring; 26. guide column; 27. second elastic member; 28. mounting plate; 29. ​​pressing block; 30. containing tank; 31. observation window; 32. support plate; 33. dust collecting cylinder; 34. third telescopic member; 35. biological filter cartridge. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0029] like Figure 1-Figure 5 As shown, a sewage treatment device for hydrofluoroether production provided by the present invention comprises a housing 1, two groups of symmetrically distributed sedimentation cylinders 2 are fixedly installed in the housing 1, a biological filter cylinder 35 is connected to the bottom of the housing 1 and a biofilm is arranged in the biological filter cylinder 35, a water inlet pipe 3 connected to the sedimentation cylinder 2 is fixedly installed on the housing 1, a first filter screen 4 is fixedly installed in the water inlet pipe 3, a stirring rod 7 is arranged in the sedimentation cylinder 2, a stirring shaft 6 is rotatably installed on the top side wall of the housing 1, the stirring shaft 6 is coaxially arranged with the sedimentation cylinder 2 and the stirring rod 7 is fixedly installed on the stirring shaft 6, and a first rotating power member 5 that drives the stirring shaft 6 to rotate is fixedly installed on the housing 1; The bottom of the sedimentation cylinder 2 is an open structure, and a fixed baffle 8 is fixedly installed at the lower end of the sedimentation cylinder 2, and a movable baffle 9 is slidably installed on the fixed baffle 8. Notches are opened on the fixed baffle 8 and the movable baffle 9, and in the initial state, the fixed baffle 8 contacts and closes the lower end of the sedimentation cylinder 2. The notches on the fixed baffle 8 and the movable baffle 9 are spaced apart, and a slide bar 10 is slidably installed in the middle of the fixed baffle 8, and the top of the slide bar 10 is fixedly connected to the movable baffle 9. A first elastic member 11 distributed around the slide bar 10 is fixedly installed on the surface of the fixed baffle 8 away from the movable baffle 9, and one end of the first elastic member 11 away from the fixed baffle 8 is fixedly connected to the end of the slide bar 10. The middle of the top side wall of the shell 1 is fixed A first telescopic member 12 is fixedly installed, a second rotating power member 13 is fixedly installed at the output end of the first telescopic member 12, a rotating frame 14 with a cross-shaped structure is fixedly installed at the output end of the second rotating power member 13, a bottom plate 15 is fixedly installed at the end of the rotating frame 14, a top rod 19 is fixedly installed in the middle of the bottom plate 15, two groups of symmetrical bottom plates 15 are fixedly installed with filter cartridges 16, and the other two groups of bottom plates 15 are fixedly installed with collecting cylinders 17, a through groove is provided at the position where the collecting cylinder 17 contacts the bottom plate 15, and a second filter screen 18 is fixedly installed in the through groove, the outer diameters of the filter cartridge 16 and the collecting cylinder 17 are the same as the inner diameter of the sedimentation cylinder 2, and the outer diameters of the filter cartridge 16 and the collecting cylinder 17 are smaller than the diameter of the bottom plate 15.

[0030] In actual application of this embodiment, in the initial state, the collecting cylinder 17 is located in the sedimentation cylinder 2, and the bottom plate 15 is in conflict with the lower end surface of the sedimentation cylinder 2. At this time, the top rod 19 contacts the lower part of the sliding rod 10 and pushes the movable baffle 9 away from the fixed baffle 8. At this time, the first elastic member 11 is compressed, and the set volume of sewage to be treated is transported to the sedimentation cylinder 2 through the water inlet pipe 3, and the large particles of impurities in the sewage are preliminarily filtered through the first filter screen 4. Then, the flocculant is added to the sedimentation cylinder 2, and the stirring shaft 6 and the stirring rod 7 are driven to rotate by the first rotating power member 5. The sewage is stirred by the stirring rod 7 so that the flocculant is evenly distributed in the sewage, and then it is left to stand for a set time; The flocculant reacts chemically with the solid particles in the water to generate larger flocs. Under the action of gravity, the flocs settle downward, with part of the flocs settling in the collecting cylinder 17 and part of the flocs settling on the fixed baffle 8 and the movable baffle 9. After the sedimentation is completed, the first telescopic member 12 drives the rotating frame 14 to move downward by a set distance, so that the second filter screen 18 moves out of the sedimentation cylinder 2. At this time, the sewage in the collecting cylinder 17 can flow out through the second filter screen 18. When the sewage in the sedimentation cylinder 2 flows downward, it can drive the flocs on the fixed baffle 8 and the movable baffle 9 to move into the collecting cylinder 17. After the set time, the rotating frame 14 continues to descend. When the top rod 19 is separated from the sliding rod 10, the movable baffle 9 contacts the fixed baffle 8 to close the lower end of the sedimentation cylinder 2. When the upper end of the collecting cylinder 17 leaves the sedimentation cylinder 2, it stops descending. At this time, the second rotating power member 13 drives the rotating frame 14 to rotate ninety degrees, so that the filter cylinder 16 moves to the bottom of the sedimentation cylinder 2 The bottom plate 15 is not in contact with the lower end of the sedimentation cylinder 2, and the sewage in the sedimentation cylinder 2 can flow out through the filter cylinder 16. The small amount of flocs remaining in the sedimentation cylinder 2 will be filtered by the filter cylinder 16, thereby realizing the rapid separation of the precipitated impurities and the upper sewage, and reducing the residual flocs in the sewage, so that the sewage can be discharged quickly. In the subsequent rapid discharge process, the residual flocs can be filtered and intercepted again by the filter cylinder 16, further reducing the probability of residual impurities in the sewage, and improving the sewage treatment effect. At the same time, the sewage in the collecting cylinder 17 will also pass through the second filter screen 18, and then the sewage will enter the biological filter cylinder 35 for re-filtration through the biofilm, and the filtered sewage will be discharged from the biological filter cylinder 35. Subsequently, the rotating frame 14 is rotated ninety degrees in a cycle to perform sedimentation and filtration again.

[0031] In an example of the present embodiment, the second rotating power member 13 is a second motor, and of course it can also be other components that can output rotational power, such as a hydraulic motor. The rotating frame 14 is driven to rotate by the first motor. The first telescopic member 12 is a first electric telescopic rod, and of course it can also be other components that can actively change the length, such as a hydraulic cylinder. The rotating frame 14 is driven to move up and down by the first electric telescopic rod. The first elastic member 11 is a first spring, and of course it can also be other elastic components such as an elastic ball. The first spring applies thrust to the movable baffle 9.

[0032] like Figure 1-Figure 8 As shown, a sewage treatment device for hydrofluoroether production provided by the present invention is provided. A second telescopic member 20 is fixedly installed on the top side wall of the shell 1, and a lifting plate 21 is fixedly installed on the output end of the second telescopic member 20. The lifting plate 21 is perpendicular to the plane formed by the axes of the two sets of sedimentation cylinders 2. Pressing plates 24 are provided at both ends of the lifting plate 21. A through hole is provided in the middle of the pressing plate 24. The diameter of the pressing plate 24 is the same as the inner diameter of the filter cylinder 16 and the collecting cylinder 17.

[0033] Specifically, the third rotating power member 22 is fixedly installed at both ends of the lifting plate 21 , and a connecting frame 23 is fixedly installed at the output end of the third rotating power member 22 . The connecting frame 23 is fixedly connected to the pressing plate 24 .

[0034] Specifically, a lifting ring 25 is provided on the pressure plate 24, and the lifting ring 25 is coaxially arranged with the pressure plate 24. A plurality of mounting plates 28 distributed in a circular array around its axis are fixedly installed on the lifting ring 25, and the mounting plates 28 are distributed along the radial direction of the lifting ring 25. A plurality of pressing blocks 29 are fixedly installed on the surface of the mounting plate 28 close to the pressure plate 24, and gaps are provided between the pressing blocks 29. The pressing blocks 29 penetrate the pressure plate 24 and are in sliding contact with the pressure plate 24, and a receiving groove 30 is provided at one end of the pressing block 29 away from the mounting plate 28.

[0035] Specifically, a plurality of groups of symmetrically distributed guide columns 26 are fixedly installed on the pressure plate 24, the guide columns 26 penetrate the lifting ring 25 and are slidably connected to the lifting ring 25, and a second elastic member 27 distributed around the guide columns 26 is fixedly installed on the pressure plate 24, and the end of the second elastic member 27 away from the pressure plate 24 is fixedly connected to the lifting ring 25.

[0036] In actual application of this embodiment, after the collecting cylinder 17 or the filter cylinder 16 collects impurities from the sedimentation cylinder 2 and moves to the bottom of the pressing plate 24 and stops, the collecting cylinder 17 or the filter cylinder 16 is located directly below the pressing plate 24, and the second telescopic member 20 drives the lifting plate 21 to move downward so that the pressing plate 24 enters the collecting cylinder 17 or the filter cylinder 16. After the lower end of the pressing block 29 contacts the bottom plate 15, the pressing plate 24 continues to descend until the pressing plate 24 contacts the bottom plate 15. At this time, the second elastic member 27 will be stretched, so that the impurities in the collecting cylinder 17 or the filter cylinder 16 can be squeezed through the pressing plate 24, and at the same time, the speed of sewage discharge in the collecting cylinder 17 can be accelerated, the sewage content carried by impurities can be reduced, and the workload of subsequent treatment of impurities can be reduced, so as to avoid a large amount of sewage not participating in the subsequent filtration treatment, thereby improving the effect of sewage treatment; After the extrusion is completed, the pressing plate 24 moves upward by a set distance and is located in the collecting cylinder 17 or the filter cylinder 16. At this time, under the action of the second elastic member 27, the pressing block 29 is always in contact with the bottom plate 15, and the pressing plate 24 is driven to rotate by the third rotating power member 22. The pressing plate 24 rotates toward the opening direction of the receiving groove 30, and the pressing plate 24 drives the pressing block 29 to rotate. Since the pressing block 29 is in close contact with the bottom plate 15, the pressing block 29 can move the flocs on the bottom plate 15 into the receiving groove 30 during the rotation process, so that the flocs dehydrated on the bottom plate 15 can be cleaned by multiple groups of pressing blocks 29 to ensure the clean state of the collecting cylinder 17 or the filter cylinder 16, reduce the probability of blockage or impurities entering the sewage again when the collecting cylinder 17 or the filter cylinder 16 is located below the sedimentation cylinder 2, ensure the smooth flow of sewage, and improve the sewage treatment effect. After the cleaning is completed, the lifting plate 21 drives the pressing plate 24 to leave the collecting cylinder 17 or the filter cylinder 16 upward.

[0037] In one example of the present invention, the third rotating power member 22 is a third motor, and of course it can also be other components that can output rotational power, such as a hydraulic motor. The third motor drives the pressure plate 24 to rotate. The second telescopic member 20 is a second electric telescopic rod, and of course it can also be other components that can actively change the length, such as a hydraulic cylinder. The pressure plate 24 is driven up and down by the second electric telescopic rod. The second elastic member 27 is a second spring, and of course it can also be other elastic components such as an elastic ball. The second spring applies a downward pulling force to the mounting plate 28.

[0038] like Figure 1-Figure 8 As shown, a sewage treatment device for hydrofluoroether production provided by the present invention is provided. An observation window 31 is provided on the side wall of the shell 1 at a position corresponding to the pressure plate 24. A support plate 32 is rotatably installed in the observation window 31. A dust collecting cylinder 33 is fixedly installed at one end of the support plate 32 away from the side wall of the shell 1. The inner diameter of the dust collecting cylinder 33 is the same as the outer diameter of the pressure plate 24. A third telescopic member 34 is rotatably installed on the shell 1 to drive the support plate 32 to rotate.

[0039] After the cleaning is completed, the pressing plate 24 is reset, and then the dust collecting barrel 33 is reset. After that, the impurities in the dust collecting barrel 33 are cleaned.

[0040] In an example of the present invention, the third telescopic member 34 is a third electric telescopic rod, and of course, it can also be other components that can actively change the length, such as a hydraulic cylinder, and the dust collecting barrel 33 is driven to move by the third electric telescopic rod.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0042] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A wastewater treatment device for hydrofluoroether production, comprising a housing (1), characterized in that: Two groups of symmetrically distributed sedimentation cylinders (2) are fixedly installed in the shell (1); the bottom of the shell (1) is connected to a biological filter cylinder (35) and a biological membrane is arranged in the biological filter cylinder (35); a water inlet pipe (3) connected to the sedimentation cylinder (2) is fixedly installed on the shell (1); a first filter screen (4) is fixedly installed in the water inlet pipe (3); and a stirring rod (7) is arranged in the sedimentation cylinder (2); The bottom of the sedimentation cylinder (2) is an open structure, and a fixed baffle (8) is fixedly installed at the lower end of the sedimentation cylinder (2), and a movable baffle (9) is slidably installed on the fixed baffle (8), and notches are opened on the fixed baffle (8) and the movable baffle (9), and in an initial state, the fixed baffle (8) and the movable baffle (9) are in contact with and close the lower end of the sedimentation cylinder (2), and a first telescopic member (12) is fixedly installed at the middle of the top side wall of the shell (1), and a second rotating power member (12) is fixedly installed at the output end of the first telescopic member (12). 3) A rotating frame (14) of a cross-shaped structure is fixedly mounted on the output end of the second rotating power member (13); a bottom plate (15) is fixedly mounted on the end of the rotating frame (14); a top rod (19) is fixedly mounted in the middle of the bottom plate (15); filter cartridges (16) are fixedly mounted on two groups of symmetrical bottom plates (15); and collecting cartridges (17) are fixedly mounted on the other two groups of bottom plates (15); a through groove is provided at a position where the collecting cartridge (17) contacts the bottom plate (15), and a second filter screen (18) is fixedly mounted in the through groove.

2. A wastewater treatment equipment for hydrofluoroether production according to claim 1, characterized in that: A stirring shaft (6) is rotatably mounted on the top side wall of the shell (1); the stirring shaft (6) is coaxially arranged with the sedimentation cylinder (2) and a stirring rod (7) is fixedly mounted on the stirring shaft (6); and a first rotating power member (5) for driving the stirring shaft (6) to rotate is fixedly mounted on the shell (1).

3. A sewage treatment equipment for hydrofluoroether production according to claim 1, characterized in that: The notches on the fixed baffle (8) and the movable baffle (9) are arranged at intervals, a slide rod (10) is slidably mounted in the middle of the fixed baffle (8), the top end of the slide rod (10) is fixedly connected to the movable baffle (9), a first elastic member (11) distributed around the slide rod (10) is fixedly mounted on a surface of the fixed baffle (8) away from the movable baffle (9), and one end of the first elastic member (11) away from the fixed baffle (8) is fixedly connected to the end of the slide rod (10).

4. A sewage treatment equipment for hydrofluoroether production according to claim 1, characterized in that: The outer diameters of the filter cartridge (16) and the collecting cartridge (17) are both the same as the inner diameter of the sedimentation cartridge (2), and the outer diameters of the filter cartridge (16) and the collecting cartridge (17) are both smaller than the diameter of the bottom plate (15).

5. The sewage treatment equipment for hydrofluoroether production according to claim 1, characterized in that: A second telescopic member (20) is fixedly mounted on the inner top side wall of the shell (1); a lifting plate (21) is fixedly mounted on the output end of the second telescopic member (20); the lifting plate (21) is perpendicular to a plane formed by the axes of the two sets of sedimentation cylinders (2); pressing plates (24) are arranged at both ends of the lifting plate (21); a through hole is arranged in the middle of the pressing plate (24); and the diameter of the pressing plate (24) is the same as the inner diameter of the filter cylinder (16) and the collection cylinder (17).

6. A sewage treatment equipment for hydrofluoroether production according to claim 5, characterized in that: A third rotating power component (22) is fixedly mounted on both ends of the lifting plate (21), a connecting frame (23) is fixedly mounted on the output end of the third rotating power component (22), and the connecting frame (23) is fixedly connected to the pressing plate (24).

7. A wastewater treatment equipment for hydrofluoroether production according to claim 6, characterized in that: The pressing plate (24) is provided with a lifting ring (25), the lifting ring (25) and the pressing plate (24) being arranged coaxially, a plurality of mounting plates (28) arranged in a circular array around the axis of the lifting ring (25) being fixedly mounted on the lifting ring (25), the mounting plates (28) being arranged along the radial direction of the lifting ring (25), a plurality of pressing blocks (29) being fixedly mounted on the surface of the mounting plate (28) close to the pressing plate (24), gaps being arranged between the pressing blocks (29), the pressing blocks (29) passing through the pressing plate (24) and being in sliding contact with the pressing plate (24), and a receiving groove (30) being provided at one end of the pressing block (29) away from the mounting plate (28).

8. The sewage treatment equipment for hydrofluoroether production according to claim 7, characterized in that: A plurality of groups of symmetrically distributed guide columns (26) are fixedly mounted on the pressing plate (24), the guide columns (26) passing through the lifting ring (25) and being slidably connected to the lifting ring (25), and a second elastic member (27) distributed around the guide columns (26) is fixedly mounted on the pressing plate (24), and one end of the second elastic member (27) away from the pressing plate (24) is fixedly connected to the lifting ring (25).

9. The sewage treatment equipment for hydrofluoroether production according to claim 5, characterized in that: An observation window (31) is provided on the side wall of the shell (1) at a position corresponding to the pressing plate (24), a support plate (32) is rotatably mounted in the observation window (31), a dust collecting cylinder (33) is fixedly mounted on one end of the support plate (32) away from the side wall of the shell (1), the inner diameter of the dust collecting cylinder (33) is the same as the outer diameter of the pressing plate (24), and a third telescopic member (34) is rotatably mounted on the shell (1) for driving the support plate (32) to rotate.

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