A medical chemical wastewater treatment device for environmental engineering

Abstract

The present invention belongs to the technical field of sewage treatment, and specifically discloses a medical chemical sewage treatment device for environmental engineering, including a sewage box, a support column is provided at the center of the bottom wall of the sewage box, a fixed filter body is provided at the upper end of the support column, a rotating filter body is rotatably provided on the upper end surface of the fixed filter body, a feeding assembly is provided on the fixed filter body and the rotating filter body, a communicating vessel assembly is provided on the fixed filter body, a buoyancy automatic conversion assembly is provided on the communicating vessel assembly, a steering transmission assembly is provided on the communicating vessel assembly and the feeding assembly, and the steering transmission assembly is linked with the buoyancy automatic conversion assembly. In the present invention, when the filtered sewage reaches a certain amount, according to the communicating vessel principle, the impurities on the filter plate are automatically cleaned by buoyancy linkage without stopping the equipment, thereby avoiding the blockage of the filter plate and improving the efficiency of sewage treatment.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment, and specifically refers to a medical chemical sewage treatment device for environmental engineering. Background Art

[0002] Medical sewage is mainly sewage discharged from the hospital's treatment rooms, laboratories, wards, laundry rooms, X-ray studios and operating rooms, and its sewage sources and composition are very complex. Hospital sewage contains a large number of pathogenic bacteria, viruses and chemical agents, and has the characteristics of space pollution, acute infection and latent infection. When treating medical sewage, it is necessary to first filter the sewage to remove impurities, and then re-treat the filtered sewage. When filtering and treating medical sewage, a filter plate is generally used, but after long-term use, the filter plate will cause clogging. In order to avoid clogging, it is necessary to stop the equipment, disassemble the filter plate, and clean the impurities. This process is relatively cumbersome, and the equipment is stopped for a long time, resulting in low efficiency of sewage treatment.

[0003] Therefore, a medical chemical wastewater treatment device for environmental engineering is needed to solve the above problems. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a medical chemical wastewater treatment device for environmental engineering. When the filtered wastewater reaches a certain amount, according to the principle of communicating vessels, the impurities on the filter plate are automatically cleaned by buoyancy linkage without stopping the equipment, thereby avoiding clogging of the filter plate and improving the efficiency of sewage treatment.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes a medical chemical wastewater treatment device for environmental engineering, including a sewage box, a support column is provided at the center of the bottom wall of the sewage box, a fixed filter body is provided at the upper end of the support column, a rotating filter body is rotatably provided on the upper end surface of the fixed filter body, a feeding assembly is provided on the fixed filter body and the rotating filter body, a communicating vessel assembly is provided on the fixed filter body, an automatic buoyancy conversion assembly is provided on the communicating vessel assembly, a steering transmission assembly is provided on the communicating vessel assembly and the feeding assembly, and the steering transmission assembly is linked to the automatic buoyancy conversion assembly.

[0006] Furthermore, a filter cavity and a feed cavity are provided through the end surface of the fixed filter body along the axial direction, the filter cavity and the feed cavity are symmetrically arranged, a filter plate is provided at the upper end of the filter cavity, and a lower baffle is provided at the lower end of the filter cavity.

[0007] Furthermore, the end surface of the rotating filter body is symmetrically provided with connecting cavities along the axial direction, and the two connecting cavities are located on the circumference of the filter cavity and the feed cavity.

[0008] Furthermore, the unloading assembly includes a support rod, a cover plate, a sewage inlet pipe and a sewage pump, the lower end of the support rod is arranged on the outer wall of the fixed filter body, the cover plate is arranged on the upper end of the support rod, the cover plate is arranged on the upper end surface of the rotating filter body, the sewage inlet pipe passes through the upper end surface of the cover plate, the sewage pump is arranged on the upper wall of the cover plate, and the sewage pump is connected to the sewage inlet pipe.

[0009] Furthermore, the communicating vessel assembly includes a linkage cylinder, a fixed plate, connecting pipe 1, connecting pipe 2, a three-way joint, a water outlet pipe and a solenoid valve, the fixed plate is arranged on the outer wall of the fixed filter body, the linkage cylinder is arranged on the fixed plate, one end of the connecting pipe 1 is arranged on the bottom wall of the linkage cylinder, one end of the connecting pipe 2 is arranged on the lower baffle plate, the three-way joint connects connecting pipe 1, connecting pipe 2 and the water outlet pipe together, and the solenoid valve is arranged on the water outlet pipe.

[0010] Furthermore, the buoyancy automatic conversion component includes a buoyancy plate, a lifting rod, a linkage rod, a transmission rod, a ratchet rod, a pressure plate, a limit plate, a support frame, a linkage shaft, a transmission ratchet, a buffer spring, a spring baffle, a buffer rod, a transmission tooth, a ratchet tooth, a limit strip, a counterweight and a start switch. The support frame is arranged on the side wall of the fixed plate, the linkage shaft is arranged on the support frame, the transmission ratchet is arranged at one end of the linkage shaft, the buoyancy plate is slidably arranged in the linkage cylinder, the lower end of the lifting rod is arranged on the upper wall of the buoyancy plate, one end of the linkage rod is arranged on the upper end of the lifting rod, the outer wall of the buffer rod is provided with a limit strip along the axial direction, and the buffer rod is arranged on the The end of the linkage rod, the upper end of the transmission rod is arranged on the inner end of the buffer rod, the buffer spring is sleeved on the buffer rod, the spring baffle is arranged on the outer end of the buffer rod, the spring baffle is arranged on the outside of the linkage rod, the ratchet rod is arranged at the lower end of the transmission rod, the pressure plate is arranged at the lower end of the ratchet rod, the limit plate is arranged on the lower outer wall of the linkage cylinder, the starting switch is arranged on the upper wall of the limit plate, the counterweight block is arranged on the upper wall of the buoyancy plate, the counterweight block is sleeved on the lifting rod, the transmission tooth array is arranged on the inner side wall of the ratchet rod, the transmission teeth are inclined upward, and the outer wall of the transmission ratchet is provided with ratchet teeth around the axis array, and the ratchet teeth are inclined counterclockwise.

[0011] Furthermore, the steering transmission assembly includes a rotating rod, a center rod, bevel gear 1, bevel gear 2, pulley 1, pulley 2 and a transmission belt, the lower end of the rotating rod is rotatably arranged on the upper wall of the fixed plate, the pulley 1 is arranged at the upper end of the rotating rod, the lower end of the center rod passes through the center of the upper wall of the cover plate, the pulley 2 is arranged at the upper end of the center rod, the transmission belt is arranged on pulley 1 and pulley 2, the bevel gear 1 is arranged at the lower end of the rotating rod, the bevel gear 1 is rotatably arranged on the upper wall of the fixed plate, the bevel gear 2 is arranged at the other end of the linkage shaft, and the bevel gear 1 is meshed with the bevel gear 2.

[0012] Furthermore, the sewage inlet pipe is located on the circumference of the filter cavity and the feed cavity.

[0013] Furthermore, the buoyancy plate is provided with a through hole.

[0014] The beneficial effects achieved by the present invention using the above structure are as follows: 1. According to the connecting vessel principle, the buoyancy plate in the linkage cylinder rises with the water level of the filtered sewage in the filter chamber, and the buoyancy plate drives the lifting rod, linkage rod, transmission rod and pressure plate to rise. When the pressure plate leaves the pressure plate, the start switch is in the closed state and the sewage pump stops; 2. The fixed filter body is provided with a filter chamber and a feed chamber, and the rotating filter body is provided with two connecting chambers. When the filtered sewage in the filter chamber exceeds a certain height, the upward buoyancy of the buoyancy plate is used to control the rotation of the rotating filter body, automatically clean the filtered impurities, and continue to filter the sewage at the same time; 3. When sewage is discharged from the outlet pipe, the buoyancy plate in the linkage cylinder descends, and the buoyancy plate and the counterweight drive the lifting rod to descend. The lifting rod drives the linkage rod, the transmission rod and the ratchet rod to move downward. At the same time, the transmission ratchet squeezes the ratchet rod to one side, and the ratchet rod drives the transmission rod and the buffer rod to move to one side. The transmission rod compresses the buffer spring. At this time, the ratchet rod will not drive the transmission ratchet to rotate, and the transmission rod drives the ratchet rod to move downward until the pressure plate presses down to start the switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front three-dimensional structure of a medical chemical wastewater treatment device for environmental engineering proposed by the present invention; Figure 2 This is a schematic diagram of the rear three-dimensional structure of a medical chemical wastewater treatment device for environmental engineering proposed by the present invention; Figure 3 for Figure 1 The main view; Figure 4 This is a schematic diagram of the internal structure of a medical chemical wastewater treatment device for environmental engineering; Figure 5 It is a schematic diagram of the three-dimensional structure of a rotating filter body; Figure 6 It is a schematic diagram of the three-dimensional structure of a fixed filter body; Figure 7 It is a schematic diagram of the internal three-dimensional structure of the fixed filter body; Figure 8 for Figure 2 Enlarged view of part A; Fig. 9 for Figure 4 Enlarged view of part B.

[0016] Among them, 1. Dirt box, 2. Support column, 3. Fixed filter body, 4. Rotating filter body, 5. Feeding assembly, 6. Connecting vessel assembly, 7. Buoyancy automatic conversion assembly, 8. Steering transmission assembly, 9. Filter chamber, 10. Feeding chamber, 11. Filter plate, 12. Lower baffle, 13. Connecting chamber, 14. Support rod, 15. Cover plate, 16. Sewage inlet pipe, 17. Sewage pump, 18. Linkage cylinder, 19. Fixed plate, 20. Connecting pipe 1, 21. Connecting pipe 2, 22. Three-way joint, 23. Outlet pipe, 24. Solenoid valve, 25. Floating Force plate, 26, lifting rod, 27, linkage rod, 28, transmission rod, 29, ratchet rod, 30, pressure plate, 31, limit plate, 32, support frame, 33, linkage shaft, 34, transmission ratchet, 35, buffer spring, 36, spring baffle, 37, buffer rod, 38, limit strip, 39, counterweight, 40, start switch, 41, rotating rod, 42, center rod, 43, bevel gear one, 44, bevel gear two, 45, pulley one, 46, pulley two, 47, transmission belt, 48, through hole, 49, transmission teeth, 50, ratchet teeth.

[0017] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0020] like Figure 1As shown, the present invention proposes a medical chemical wastewater treatment device for environmental engineering, including a sewage box 1, a support column 2 is provided at the center of the bottom wall of the sewage box 1, a fixed filter body 3 is provided at the upper end of the support column 2, a rotating filter body 4 is rotatably provided on the upper end surface of the fixed filter body 3, a feeding assembly 5 is provided on the fixed filter body 3 and the rotating filter body 4, a communicating vessel assembly 6 is provided on the fixed filter body 3, a buoyancy automatic conversion assembly 7 is provided on the communicating vessel assembly 6, a steering transmission assembly 8 is provided on the communicating vessel assembly 6 and the feeding assembly 5, and the steering transmission assembly 8 is linked with the buoyancy automatic conversion assembly 7.

[0021] like Figure 1 , Figure 4 , Figure 6 , Figure 7 As shown, the end surface of the fixed filter body 3 is penetrated by a filter cavity 9 and a feed cavity 10 along the axial direction. The filter cavity 9 and the feed cavity 10 are symmetrically arranged. A filter plate 11 is provided at the upper end of the filter cavity 9, and a lower baffle 12 is provided at the lower end of the filter cavity 9.

[0022] like Figure 1 , Figure 4 , Figure 5 As shown, the end surface of the rotating filter body 4 is symmetrically provided with a connecting cavity 13 along the axial direction, and the two connecting cavities 13 are located on the circumference of the filter cavity 9 and the feed cavity 10.

[0023] like Figure 1 , Figure 3 , Figure 4 As shown, the unloading assembly 5 includes a support rod 14, a cover plate 15, a sewage inlet pipe 16 and a sewage pump 17. The lower end of the support rod 14 is arranged on the outer wall of the fixed filter body 3, the cover plate 15 is arranged on the upper end of the support rod 14, the cover plate 15 is arranged on the upper end surface of the rotating filter body 4, the sewage inlet pipe 16 passes through the upper end surface of the cover plate 15, the sewage pump 17 is arranged on the upper wall of the cover plate 15, and the sewage pump 17 is connected to the sewage inlet pipe 16.

[0024] like Figure 1 , Figure 3 , Figure 4 As shown, the communicating vessel assembly 6 includes a linkage cylinder 18, a fixed plate 19, a connecting pipe 1 20, a connecting pipe 21, a three-way joint 22, a water outlet pipe 23 and a solenoid valve 24. The fixed plate 19 is arranged on the outer wall of the fixed filter body 3, the linkage cylinder 18 is arranged on the fixed plate 19, one end of the connecting pipe 1 20 is arranged on the bottom wall of the linkage cylinder 18, one end of the connecting pipe 21 is arranged on the lower baffle 12, the three-way joint 22 connects the connecting pipe 1 20, the connecting pipe 2 21 and the water outlet pipe 23 together, and the solenoid valve 24 is arranged on the water outlet pipe 23.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Fig. 9 As shown, the buoyancy automatic conversion assembly 7 includes a buoyancy plate 25, a lifting rod 26, a linkage rod 27, a transmission rod 28, a ratchet rod 29, a pressure plate 30, a limit plate 31, a support frame 32, a linkage shaft 33, a transmission ratchet 34, a buffer spring 35, a spring baffle 36, a buffer rod 37, a transmission tooth 49, a ratchet tooth 50, a limit bar 38, a counterweight 39 and a start switch 40. The support frame 32 is arranged on the side wall of the fixed plate 19, and the linkage shaft 33 is penetrated. The driving ratchet 34 is arranged on one end of the linkage shaft 33, the buoyancy plate 25 is slidably arranged in the linkage cylinder 18, the lower end of the lifting rod 26 is arranged on the upper wall of the buoyancy plate 25, one end of the linkage rod 27 is arranged on the upper end of the lifting rod 26, the outer wall of the buffer rod 37 is provided with a limit strip 38 along the axial direction, the buffer rod 37 is arranged through the end of the linkage rod 27, and the upper end of the driving rod 28 is arranged on the inner end of the buffer rod 37. The buffer spring 35 is sleeved on the buffer rod 37, the spring baffle 36 is arranged on the outer end of the buffer rod 37, the spring baffle 36 is arranged on the outer side of the linkage rod 27, the ratchet rod 29 is arranged at the lower end of the transmission rod 28, the pressure plate 30 is arranged at the lower end of the ratchet rod 29, the limit plate 31 is arranged on the lower outer wall of the linkage cylinder 18, the start switch 40 is arranged on the upper wall of the limit plate 31, the counterweight block 39 is arranged on the upper wall of the buoyancy plate 25, and the counterweight block 39 is sleeved on the lifting rod 26, and the transmission tooth 49 array is arranged on the inner wall of the ratchet rod 29, and the transmission tooth 49 is inclined upward. The outer wall of the transmission ratchet 34 is provided with ratchet teeth 50 in an array around the axis, and the ratchet teeth 50 are inclined counterclockwise. When the ratchet rod 29 moves upward, the ratchet rod 29 drives the transmission ratchet 34 to rotate clockwise. When the ratchet rod 29 moves downward, the ratchet rod 29 does not engage with the transmission ratchet 34, and the transmission ratchet 34 remains stationary.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8As shown, the steering transmission assembly 8 includes a rotating rod 41, a center rod 42, a bevel gear 1 43, a bevel gear 2 44, a pulley 1 45, a pulley 2 46 and a transmission belt 47. The lower end of the rotating rod 41 is rotatably arranged on the upper wall of the fixed plate 19, the pulley 1 45 is arranged at the upper end of the rotating rod 41, the lower end of the center rod 42 passes through the center of the upper wall of the cover plate 15, the pulley 2 46 is arranged at the upper end of the center rod 42, the transmission belt 47 is arranged on the pulley 1 45 and the pulley 2 46, the bevel gear 1 43 is arranged at the lower end of the rotating rod 41, the bevel gear 1 43 is rotatably arranged on the upper wall of the fixed plate 19, the bevel gear 2 44 is arranged at the other end of the linkage shaft 33, and the bevel gear 1 43 is meshed with the bevel gear 2 44.

[0027] like Figure 1 , Figure 3 , Figure 4 As shown, the sewage inlet pipe 16 is located on the circumference of the filter chamber 9 and the feed chamber 10.

[0028] like Figure 1 , Figure 4 As shown, the buoyancy plate 25 is provided with a through hole 48 therethrough.

[0029] During specific use, at the beginning, the two connecting chambers 13 are aligned with the filter chamber 9 and the feed chamber 10 respectively, and the sewage pump 17 introduces the external sewage from the sewage inlet pipe 16 into the connecting chamber 13, and the sewage filtered by the filter plate 11 enters the filter chamber 9, and the filtered sewage enters the linkage cylinder 18 from the connecting pipe 21, the three-way joint 22 and the connecting pipe 1 20. The filtered impurities are intercepted on the filter plate 11 and exist in the connecting chamber 13 aligned with the filter plate 11. According to the connecting vessel principle, the buoyancy plate 25 in the linkage cylinder 18 rises with the water level of the filtered sewage in the filter chamber 9. The buoyancy plate 25 drives the lifting rod 26 to rise, the lifting rod 26 drives the linkage rod 27 to rise, the linkage rod 27 drives the transmission rod 28 to rise, the transmission rod 28 drives the ratchet rod 29 to rise, and the ratchet rod 29 drives the pressure plate 30 to rise. When the pressure plate 30 leaves the pressure plate 30, the start switch 40 is in the off state. In the closed state, the sewage pump 17 stops. When the ratchet rod 29 is meshed with the transmission ratchet 34, the transmission ratchet 34 rotates, and the transmission ratchet 34 drives the linkage shaft 33 to rotate. The linkage shaft 33 drives the bevel gear 2 44 to rotate. The bevel gear 2 44 drives the bevel gear 1 43 to rotate. The bevel gear 1 43 drives the rotating rod 41 to rotate. The rotating rod 41 drives the pulley 1 45 to rotate. The pulley 1 45 drives the pulley 2 46 to rotate through the transmission belt 47. The pulley 2 46 drives the center rod 42 to rotate. The center rod 42 drives the rotating filter body 4 to rotate 180 degrees. At this time, the control solenoid valve 24 is opened, and the sewage in the filter chamber 9 and the linkage cylinder 18 is discharged from the outlet pipe 23 and enters the next sewage treatment procedure. The impurities in the connecting chamber 13 aligned with the filter plate 11 rotate with the rotating filter body 4 and are finally aligned with the discharge chamber 10. The impurities fall into the dirt box 1 from the connecting chamber 13 and the discharge chamber 10; When sewage is discharged from the outlet pipe 23, the buoyancy plate 25 in the linkage cylinder 18 descends, and the buoyancy plate 25 and the counterweight block 39 move downward under the action of gravity. The buoyancy plate 25 drives the lifting rod 26 to descend with the counterweight block 39, and the lifting rod 26 drives the linkage rod 27 and the transmission rod 28 to descend, and the transmission rod 28 drives the ratchet rod 29 to move downward. At the same time, the transmission ratchet 34 squeezes the ratchet rod 29 to one side, and the ratchet rod 29 drives the transmission rod 28 and the buffer rod 37 to move to one side. The transmission rod 28 compresses the buffer spring 35. At this time, the ratchet rod 29 will not drive the transmission The ratchet 34 rotates, and the transmission rod 28 drives the ratchet rod 29 to move downward until the pressure plate 30 presses down the start switch 40. At this time, the buoyancy plate 25 drops to the inner bottom wall of the linkage cylinder 18, and at the same time, the other connecting cavity 13 is aligned with the sewage inlet pipe 16 and the filter cavity 9. When the pressure plate 30 presses down the start switch 40, the sewage pump 17 is turned on, and the sewage enters the connecting cavity 13 again through the sewage inlet pipe 16, and the sewage filtered by the filter plate 11 enters the filter cavity 9, and at the same time, the solenoid valve 24 is closed, and the above operation is repeated to continuously filter and process the sewage.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

[0032] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A medical chemical wastewater treatment device for environmental engineering, comprising a waste tank (1), characterized in that: A support column (2) is provided at the center of the bottom wall of the waste box (1); a fixed filter body (3) is provided at the upper end of the support column (2); a rotating filter body (4) is rotatably provided on the upper end surface of the fixed filter body (3); a material discharge assembly (5) is provided on the fixed filter body (3) and the rotating filter body (4); a communicating vessel assembly (6) is provided on the fixed filter body (3); an automatic buoyancy conversion assembly (7) is provided on the communicating vessel assembly (6); a steering transmission assembly (8) is provided on the communicating vessel assembly (6) and the material discharge assembly (5); and the steering transmission assembly (8) is linked to the automatic buoyancy conversion assembly (7).

2. The medical chemical wastewater treatment device for environmental engineering according to claim 1, characterized in that: A filter chamber (9) and a material discharge chamber (10) are provided through the end surface of the fixed filter body (3) along the axial direction. The filter chamber (9) and the material discharge chamber (10) are symmetrically arranged. A filter plate (11) is provided at the upper end of the filter chamber (9), and a lower baffle plate (12) is provided at the lower end of the filter chamber (9).

3. The medical chemical wastewater treatment device for environmental engineering according to claim 2, characterized in that: The end surface of the rotary filter body (4) is symmetrically provided with a communication cavity (13) extending through the end surface along the axial direction, and the two communication cavities (13) are located on the circumference of the filter cavity (9) and the feed cavity (10).

4. The medical chemical wastewater treatment device for environmental engineering according to claim 3, characterized in that: The material discharge assembly (5) comprises a support rod (14), a cover plate (15), a sewage introduction pipe (16) and a sewage pump (17); the lower end of the support rod (14) is arranged on the outer wall of the fixed filter body (3); the cover plate (15) is arranged on the upper end of the support rod (14); the cover plate (15) is arranged on the upper end surface of the rotating filter body (4); the sewage introduction pipe (16) penetrates the upper end surface of the cover plate (15); the sewage pump (17) is arranged on the upper wall of the cover plate (15); and the sewage pump (17) is connected to the sewage introduction pipe (16).

5. The medical chemical wastewater treatment device for environmental engineering according to claim 4, characterized in that: The communicating vessel assembly (6) comprises a linkage cylinder (18), a fixed plate (19), a communicating pipe 1 (20), a communicating pipe 2 (21), a three-way joint (22), a water outlet pipe (23) and a solenoid valve (24); the fixed plate (19) is arranged on the outer side wall of the fixed filter body (3); the linkage cylinder (18) is arranged on the fixed plate (19); one end of the communicating pipe 1 (20) is arranged on the bottom wall of the linkage cylinder (18); one end of the communicating pipe 2 (21) is arranged on the lower baffle plate (12); the three-way joint (22) connects the communicating pipe 1 (20), the communicating pipe 2 (21) and the water outlet pipe (23); and the solenoid valve (24) is arranged on the water outlet pipe (23).

6. The medical chemical wastewater treatment device for environmental engineering according to claim 5, characterized in that: The buoyancy automatic conversion assembly (7) comprises a buoyancy plate (25), a lifting rod (26), a linkage rod (27), a transmission rod (28), a ratchet rod (29), a transmission tooth, a pressure plate (30), a limit plate (31), a support frame (32), a linkage shaft (33), a transmission ratchet (34), ratchet teeth, a buffer spring (35), a spring baffle (36), a buffer rod (37), a limit bar (38), a counterweight (39) and a start switch (40). The support frame (32) is arranged on a fixed plate. The side wall of the lifting rod (19), the linkage shaft (33) is penetrated and arranged on the support frame (32), the transmission ratchet (34) is arranged at one end of the linkage shaft (33), the buoyancy plate (25) is slidably arranged in the linkage cylinder (18), the lower end of the lifting rod (26) is arranged on the upper wall of the buoyancy plate (25), one end of the linkage rod (27) is arranged on the upper end of the lifting rod (26), the outer wall of the buffer rod (37) is provided with a limit strip (38) along the axial direction, and the buffer rod (37) is penetrated and arranged on the linkage rod The end of the transmission rod (27), the upper end of the transmission rod (28) is arranged on the inner end of the buffer rod (37), the buffer spring (35) is sleeved on the buffer rod (37), the spring baffle (36) is arranged on the outer end of the buffer rod (37), the spring baffle (36) is arranged on the outer side of the linkage rod (27), the ratchet rod (29) is arranged on the lower end of the transmission rod (28), the pressure plate (30) is arranged on the lower end of the transmission rack, the limit plate (31) is arranged on the lower outer wall of the linkage cylinder (18), and the start The start switch (40) is arranged on the upper wall of the limit plate (31), the counterweight block (39) is arranged on the upper wall of the buoyancy plate (25), the counterweight block (39) is sleeved on the lifting rod (26), the start switch (40) is electrically connected to the sewage pump (17), the transmission tooth (49) array is arranged on the inner side wall of the ratchet rod (29), the transmission tooth (49) is inclined upward, and the outer wall of the transmission ratchet (34) is provided with ratchet teeth (50) in an array around the axis, and the ratchet teeth (50) are inclined counterclockwise.

7. The medical chemical wastewater treatment device for environmental engineering according to claim 6, characterized in that: The steering transmission assembly (8) comprises a rotating rod (41), a center rod (42), a bevel gear 1 (43), a bevel gear 2 (44), a pulley 1 (45), a pulley 2 (46) and a transmission belt (47). The lower end of the rotating rod (41) is rotatably arranged on the upper wall of the fixed plate (19), the pulley 1 (45) is arranged on the upper end of the rotating rod (41), the lower end of the center rod (42) passes through the center of the upper wall of the cover plate (15), the pulley 2 (46) is arranged on the upper end of the center rod (42), the transmission belt (47) is arranged on the pulley 1 (45) and the pulley 2 (46), the bevel gear 1 (43) is arranged on the lower end of the rotating rod (41), the bevel gear 1 (43) is rotatably arranged on the upper wall of the fixed plate (19), the bevel gear 2 (44) is arranged on the other end of the linkage shaft (33), and the bevel gear 1 (43) is meshed with the bevel gear 2 (44).

8. The medical chemical wastewater treatment device for environmental engineering according to claim 7, characterized in that: The sewage inlet pipe (16) is located on the circumference of the filter chamber (9) and the feed chamber (10).

9. The medical chemical wastewater treatment device for environmental engineering according to claim 8, characterized in that: The buoyancy plate (25) is provided with a through hole (48) therethrough.

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