A sewage treatment device for the production of hydrofluoroethers

Abstract

The present invention belongs to the technical field of green chemical production, and provides a sewage treatment device for the production of hydrofluoroether, including a housing. Two symmetrically distributed precipitation cylinders are fixedly installed inside the housing. A biological filtration cylinder is communicated with the bottom of the housing, and a biological membrane is arranged inside the biological filtration cylinder. A water inlet pipe communicated with the precipitation cylinder is fixedly installed on the housing, and a first filter screen is fixedly installed inside the water inlet pipe. A stirring rod is arranged inside the precipitation cylinder. Compared with the prior art, the beneficial effects of the present invention are as follows: By setting the collection cylinder and the filter cylinder, the rapid separation of precipitated impurities and the upper-layer sewage is realized, and the residue of flocculants in the sewage is reduced, so that the sewage can be quickly discharged. During the subsequent rapid discharge process, the residual flocculants 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.

Description

Technical Field

[0001] The present invention belongs to the technical field of green chemical production, and particularly relates to a sewage treatment device for the production of hydrofluoroethers. Background Art

[0002] Hydrofluoroethers are a class of organic compounds composed of hydrogen, fluorine, carbon, and oxygen elements. They usually exist in the form of colorless and odorless gases. Hydrofluoroethers can be synthesized by the addition reaction of fluorine-containing unsaturated hydrocarbons and alcohols. During the synthesis process, some by-products and wastewater will be generated, and appropriate environmental protection measures need to be taken for treatment.

[0003] When treating wastewater, precipitation and filtration are generally carried out first. When the existing equipment is in use, after precipitation with a flocculant, the sewage at the top of the container needs to be poured out first, and then the impurities at the bottom need to be poured out for cleaning. As a result, the separation speed of impurities and sewage is slow, and the impurities may flow along with the sewage during the pouring process, resulting in impurity residues in the sewage and reducing the sewage treatment effect. Summary of the Invention

[0004] The purpose of the present invention is to provide a sewage treatment device for the production of hydrofluoroethers, aiming to solve the technical problems of slow separation speed of impurities and sewage and impurity residues in the sewage in the prior art.

[0005] The present invention is realized as follows: A sewage treatment device for the production of hydrofluoroethers includes a housing. Two groups of symmetrically distributed precipitation cylinders are fixedly installed inside the housing. A biological filtration cylinder is communicated with the bottom of the housing, and a biological membrane is arranged inside the biological filtration cylinder. A water inlet pipe communicated with the precipitation cylinder is fixedly installed on the housing, and a first filter screen is fixedly installed inside the water inlet pipe. A stirring rod is arranged inside the precipitation cylinder.

[0006] The bottom of the precipitation cylinder is of an open structure, and a fixed baffle is fixedly installed at the lower end of the precipitation cylinder. A movable baffle is slidably installed on the fixed baffle. Notches are formed on both the fixed baffle and the movable baffle, and in the initial state, the fixed baffle and the movable baffle are in contact and close the lower end of the precipitation cylinder. A first telescopic member is fixedly installed in the middle of the inner top side wall of the housing. The output end of the first telescopic member is fixedly installed with a second rotary power member. The output end of the second rotary power member is fixedly installed with a cross-shaped rotating frame. A bottom plate is fixedly installed at the end of the rotating frame. A top rod is fixedly installed in the middle of the bottom plate. Filter cylinders are fixedly installed on two groups of symmetric bottom plates, and collection cylinders are fixedly installed on the other two groups of bottom plates. A through groove is formed at the position where the collection cylinder contacts the bottom plate, and a second filter screen is fixedly installed inside the through groove.

[0007] Further technical solution: A stirring shaft is rotatably installed on the inner top side wall of the housing. The stirring shaft is arranged coaxially with the precipitation cylinder, and the stirring rod is fixedly installed on the stirring shaft. A first rotary power member for driving the stirring shaft to rotate is fixedly installed on the housing.

[0008] Further technical solution: The notches on the fixed baffle and the movable baffle are distributed at intervals. A sliding rod is slidably installed in the middle of the fixed baffle. The top end of the sliding rod is fixedly connected to the movable baffle. A first elastic member distributed around the sliding rod is fixedly installed on the surface of the fixed baffle away from the movable baffle. One end of the first elastic member away from the fixed baffle is fixedly connected to the end of the sliding rod.

[0009] Further technical solution: The outer diameters of the filter cartridge and the collection cylinder are both the same as the inner diameter of the precipitation cylinder, and the outer diameters of the filter cartridge and the collection cylinder are both smaller than the diameter of the bottom plate.

[0010] Further technical solution: A second telescopic member is fixedly installed on the inner top side wall of the housing. The output end of the second telescopic member is fixedly installed with a lifting plate. The lifting plate is perpendicular to the plane formed by the axes of the two precipitation cylinders. Pressure plates are arranged at both ends of the lifting plate. Through holes are arranged in the middle of the pressure plates. The diameter of the pressure plates is the same as the inner diameters of the filter cartridge and the collection cylinder.

[0011] Further technical solution: Third rotary power members are fixedly installed at both ends of the lifting plate. The output ends of the third rotary power members are fixedly installed with connecting frames. The connecting frames are fixedly connected to the pressure plates.

[0012] Further technical solution: A lifting ring is arranged on the pressure plate. The lifting ring is coaxially arranged with the pressure plate. A plurality of mounting plates distributed in a circumferential 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 arranged between the pressing blocks. The pressing blocks penetrate through the pressure plate and are in sliding contact with the pressure plate. A containing groove is arranged at one end of the pressing block away from the mounting plate.

[0013] Further technical solution: A plurality of symmetrically distributed guiding columns are fixedly installed on the pressure plate. The guiding columns penetrate through the lifting ring and are in sliding connection with the lifting ring. A second elastic member distributed around the guiding columns is fixedly installed on the pressure plate. One end of the second elastic member away from the pressure plate is fixedly connected to the lifting ring.

[0014] Further technical solution: An observation window is opened at a position on the side wall of the housing corresponding to the pressure plate. A support plate is rotatably installed in the observation window. A dust collection cylinder is fixedly installed at one end of the support plate away from the side wall of the housing. The inner diameter of the dust collection cylinder is the same as the outer diameter of the pressure plate. A third telescopic member for driving the support plate to rotate is rotatably installed on the housing.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. After the precipitation is completed, the first telescopic member drives the rotating frame to move downward by a set distance, so that the second filter screen is moved out of the precipitation cylinder. At this time, the sewage in the collection cylinder can flow out through the second filter screen. When the sewage in the precipitation cylinder flows downward, it can drive the flocculants on the fixed baffle and the movable baffle to move into the collection cylinder. After a set time, the rotating frame continues to descend. When the ejector rod disengages from the sliding rod, the movable baffle contacts the fixed baffle to close the lower end of the precipitation cylinder. When the upper end of the collection cylinder leaves the precipitation cylinder, the descent stops. At this time, the second rotary power member drives the rotating frame to rotate by ninety degrees, so that the filter cylinder moves to directly below the precipitation cylinder. Then the rotating frame moves upward again so that the ejector rod contacts the sliding rod and pushes the movable baffle away from the fixed baffle to a set position. At this time, the bottom plate does not contact the lower end of the precipitation cylinder, and the sewage in the precipitation cylinder can flow out through the filter cylinder. A small amount of remaining flocculants in the precipitation cylinder will be filtered by the filter cylinder, thus realizing the rapid separation of the precipitated impurities from the upper-layer sewage, reducing the residue of flocculants in the sewage, enabling the sewage to be discharged quickly, and being able to filter and intercept the remaining flocculants again through the filter cylinder during the subsequent rapid discharge process, further reducing the probability of residual impurities in the sewage and improving the sewage treatment effect.

[0017] 2. When the collection cylinder or the filter cylinder stops moving to below the pressing plate after collecting impurities from the precipitation cylinder, at this time, the collection cylinder or the filter cylinder is directly below the pressing plate. The second telescopic member drives the lifting plate to move downward so that the pressing plate enters the collection cylinder or the filter cylinder. After the lower end of the pressing block contacts the bottom plate, the pressing plate continues to descend until the pressing plate contacts the bottom plate. At this time, the second elastic member will be stretched, so that the impurities in the collection cylinder or the filter cylinder can be squeezed by the pressing plate. At the same time, the speed of sewage discharge from the collection cylinder can be accelerated, the sewage content carried by the impurities can be reduced, the workload of subsequent treatment of the impurities can be reduced, a large amount of sewage can be prevented from not participating in the subsequent filtration treatment, and the sewage treatment effect can be improved.

[0018] 3. After the extrusion is completed, the pressing plate moves upward by a set distance and the pressing plate is inside the collection cylinder or the filter cylinder. At this time, under the action of the second elastic member, the pressing block always contacts the bottom plate. The pressing plate is driven to rotate by the third rotary power member, and the pressing plate rotates in the direction of the opening of the containing groove. The pressing plate drives the pressing block to rotate. Since the pressing block is in close contact with the bottom plate, during the rotation process, the pressing block can move the flocculants on the bottom plate into the containing groove, so that the dehydrated flocculants on the bottom plate can be cleaned by multiple groups of pressing blocks, ensuring the clean state inside the collection cylinder or the filter cylinder, reducing the probability of blockage or re-entry of impurities into the sewage when the collection cylinder or the filter cylinder is used below the precipitation cylinder, ensuring the smooth flow of sewage, and improving the sewage treatment effect.

[0019] 4. After the pressing plate is reset, the third telescopic member extends to drive the support plate to rotate, so that the dust collection cylinder moves to directly below the pressing plate. At this time, the second telescopic member drives the pressing plate to move downward into the dust collection cylinder. Then, the second rotating power member drives the pressing plate and the pressing block to rotate in the reverse direction. Since the opening of the containing groove is opposite to the rotating direction, the pressing block cannot provide sufficient friction for the impurities in the containing groove during the rotation process. Therefore, under the action of centrifugal force, the impurities will detach from the containing groove and fall into the dust collection cylinder, thereby realizing the cleaning of the impurities on the pressing block, preventing the impurities from entering the collection cylinder or the filter cylinder again, ensuring the cleanliness of the pressing block, improving the cleaning effect of the pressing block on the collection cylinder or the filter cylinder, and further improving the sewage treatment effect. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the structure inside the housing of the present invention.

[0022] Figure 3 It is a schematic diagram of the structure inside the precipitation cylinder of the present invention.

[0023] Figure 4 It is a schematic diagram of the structure of the fixed baffle of the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of the rotating frame of the present invention.

[0025] Figure 6 It is a schematic diagram of the structure of the lifting plate of the present invention.

[0026] Figure 7 It is a schematic diagram of the structure of the pressing plate of the present invention.

[0027] Figure 8 It is a schematic diagram of the structure of the pressing block of the present invention.

[0028] In the drawings: 1. Housing; 2. Precipitation cylinder; 3. Water inlet pipe; 4. First filter screen; 5. First rotating power member; 6. Stirring shaft; 7. Stirring rod; 8. Fixed baffle; 9. Moving baffle; 10. Slide rod; 11. First elastic member; 12. First telescopic member; 13. Second rotating power member; 14. Rotating frame; 15. Bottom plate; 16. Filter cylinder; 17. Collection 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 post; 27. Second elastic member; 28. Mounting plate; 29. Pressing block; 30. Containing groove; 31. Observation window; 32. Support plate; 33. Dust collection cylinder; 34. Third telescopic member; 35. Biological filter cylinder. Detailed Embodiments

[0029] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to 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 used to limit the present invention.

[0030] The specific implementation of the present invention will be described in detail below in conjunction with specific embodiments.

[0031] As Figures 1-5 shown, a sewage treatment device for hydrofluoroether production provided by the present invention includes a housing 1, two symmetrically distributed sedimentation cylinders 2 are fixedly installed in the housing 1, a biological filtration cylinder 35 is communicated with the bottom of the housing 1 and a biological membrane is arranged in the biological filtration cylinder 35, a water inlet pipe 3 communicated with 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 inner 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 rotary power member 5 for driving the stirring shaft 6 to rotate is fixedly installed on the housing 1;

[0032] The bottom of the sedimentation cylinder 2 is of an open structure, and a fixed baffle 8 is fixedly installed at the lower end of the sedimentation cylinder 2. A movable baffle 9 is slidably installed on the fixed baffle 8. Notches are formed on both the fixed baffle 8 and the movable baffle 9. In the initial state, the fixed baffle 8 and the movable baffle 9 are in contact and close the lower end of the sedimentation cylinder 2. The notches on the fixed baffle 8 and the movable baffle 9 are distributed at intervals. A sliding rod 10 is slidably installed in the middle of the fixed baffle 8. The top end of the sliding rod 10 is fixedly connected to the movable baffle 9. A first elastic member 11 distributed around the sliding rod 10 is fixedly installed on the surface of the fixed baffle 8 away from the movable baffle 9. One end of the first elastic member 11 away from the fixed baffle 8 is fixedly connected to the end of the sliding rod 10. A first telescopic member 12 is fixedly installed in the middle of the inner top side wall of the housing 1. The output end of the first telescopic member 12 is fixedly installed with a second rotary power member 13. The output end of the second rotary power member 13 is fixedly installed with a cross-shaped rotating frame 14. The end of the rotating frame 14 is fixedly installed with a bottom plate 15. A top rod 19 is fixedly installed in the middle of the bottom plate 15. Filter cylinders 16 are fixedly installed on two groups of symmetric bottom plates 15, and collection cylinders 17 are fixedly installed on the other two groups of bottom plates 15. Through grooves are formed at the positions where the collection cylinders 17 are in contact with the bottom plates 15, and second filter screens 18 are fixedly installed in the through grooves. The outer diameters of the filter cylinders 16 and the collection cylinders 17 are the same as the inner diameter of the sedimentation cylinder 2, and the outer diameters of the filter cylinders 16 and the collection cylinders 17 are smaller than the diameter of the bottom plate 15.

[0033] In practical application of this embodiment, in the initial state, the collection cylinder 17 is located inside the precipitation cylinder 2, and the bottom plate 15 abuts against the lower end surface of the precipitation 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. A set volume of sewage to be treated is conveyed into the precipitation cylinder 2 through the water inlet pipe 3. The large-particle impurities in the sewage are preliminarily filtered by the first filter screen 4. Then, a flocculant is added into the precipitation cylinder 2. The first rotary power member 5 drives the stirring shaft 6 and the stirring rod 7 to rotate. The sewage is stirred by the stirring rod 7 to make the flocculant evenly distributed in the sewage. Then, it is left standing for a set time;

[0034] The flocculant reacts chemically with the solid particles in the water to generate larger flocs. Under the action of gravity, the flocs precipitate downward. Some flocs precipitate in the collection cylinder 17, and some flocs precipitate on the fixed baffle 8 and the movable baffle 9. After the precipitation 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 is moved out of the precipitation cylinder 2. At this time, the sewage in the collection cylinder 17 can flow out through the second filter screen 18. When the sewage in the precipitation cylinder 2 flows downward, it can drive the flocs on the fixed baffle 8 and the movable baffle 9 to move into the collection cylinder 17. After a set time, the rotating frame 14 continues to descend. When the top rod 19 disengages from the sliding rod 10, the movable baffle 9 contacts the fixed baffle 8 to close the lower end of the precipitation cylinder 2. When the upper end of the collection cylinder 17 leaves the precipitation cylinder 2, the descent stops. At this time, the second rotary power member 13 drives the rotating frame 14 to rotate by ninety degrees, so that the filter cylinder 16 moves to directly below the precipitation cylinder 2. Then, the rotating frame 14 moves upward again so that the top rod 19 contacts the sliding rod 10 and pushes the movable baffle 9 away from the fixed baffle 8 to a set position. At this time, the bottom plate 15 does not contact the lower end of the precipitation cylinder 2. The sewage in the precipitation cylinder 2 can flow out through the filter cylinder 16. A small amount of remaining flocs in the precipitation cylinder 2 will be filtered by the filter cylinder 16, thus realizing the rapid separation of the precipitated impurities from the upper-layer sewage, and reducing the residue of the flocs in the sewage, enabling the sewage to be quickly discharged. During the subsequent rapid discharge process, the remaining 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 collection cylinder 17 will also pass through the second filter screen 18. Then, the sewage will enter the biological filter cylinder 35 for re-filtration through the biofilm. The filtered sewage is discharged from the biological filter cylinder 35. Subsequently, by rotating the rotating frame 14 by ninety degrees in a cycle, precipitation and filtration can be carried out again.

[0035] 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.

[0036] like Figures 1-8 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.

[0037] 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 .

[0038] 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.

[0039] 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.

[0040] 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;

[0041] 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.

[0042] 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.

[0043] like Figures 1-8 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.

[0044] In practical application of this embodiment, after the pressing plate 24 is reset, the third telescopic member 34 extends to drive the support plate 32 to rotate, so that the dust collection cylinder 33 moves to directly below the pressing plate 24. At this time, the second telescopic member 20 drives the pressing plate 24 to move downward into the dust collection cylinder 33. Then, the third rotary power member 22 drives the pressing plate 24 and the pressing block 29 to rotate in the reverse direction. Since the opening of the containing groove 30 is opposite to the rotation direction, the pressing block 29 cannot provide sufficient friction for the impurities in the containing groove 30 during the rotation process. Therefore, under the action of centrifugal force, the impurities will break away from the containing groove 30 and fall into the dust collection cylinder 33, thereby realizing the cleaning of the impurities on the pressing block 29, avoiding the impurities from entering the collection cylinder 17 or the filter cylinder 16 again, ensuring the cleanliness of the pressing block 29, improving the cleaning effect of the pressing block 29 on the collection cylinder 17 or the filter cylinder 16, further improving the sewage treatment effect. After the cleaning is completed, the pressing plate 24 is reset, and then the dust collection cylinder 33 is reset. After a set time, the impurities in the dust collection cylinder 33 can be cleaned up.

[0045] In an example of the present invention, the third telescopic member 34 is a third electric telescopic rod. Of course, it can also be other components such as a hydraulic cylinder that can actively change the length, and the dust collection cylinder 33 is driven to move by the third electric telescopic rod.

[0046] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0047] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments 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 on 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; A second telescopic member (20) is fixedly mounted on the inner top side wall of the housing (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 provided at both ends of the lifting plate (21); a through hole is provided 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); The lifting plate (21) is fixedly mounted with a third rotating power member (22) at both ends, and a connecting frame (23) is fixedly mounted on the output end of the third rotating power member (22), and the connecting frame (23) is fixedly connected to the pressing plate (24); 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); 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).

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. The 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: 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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