Wastewater treatment device after bakery food production

Abstract

The invention discloses a device for treating wastewater generated after bakery food making, and belongs to the field of wastewater treatment.The device comprises a treatment pond body, and a water collecting pond, an adjusting pond, an air flotation coagulating pond, an anaerobic pond and a disinfection pond are sequentially arranged in the treatment pond body; the primary sedimentation tank is arranged between the regulating tank and the air flotation coagulation tank and is used for collecting sludge produced by regulating of the regulating tank; the on-line dewatering mechanism is arranged on one side of the sludge tank and used for dewatering slurry in the sludge tank, and the on-line dewatering mechanism is communicated with the sludge tank through cooperation of a slurry inlet pipe and a submersible sewage pump arranged in the sludge tank. The sludge inlet flow of sludge can be shortened, and the wastewater treatment efficiency is improved; meanwhile, continuous on-line work can be achieved, shutdown is not needed, the sludge treatment amount in unit time is larger, the requirement of the baking wastewater treatment process can be met, and the wastewater treatment efficiency is further improved.

Description

Technical Field

[0001] The present invention relates to the field of wastewater treatment, and more particularly to a device for treating wastewater produced after baking food. Background Art

[0002] The traditional baking industry wastewater treatment process usually includes: 1. Using a regulating tank to adjust water quality, water volume, and pH; 2. Using flotation coagulation to treat, adding flocculants to the water, through aeration or mechanical stirring, after sufficient reaction, entering the flotation machine to remove grease, suspended matter, and some COD; 3. Using an anaerobic tank to decompose most of the organic matter in the wastewater into carbon dioxide and methane; 4. Using biological contact oxidation to aerobically treat the wastewater to remove dissolved organic matter in the wastewater; 5. Using an inclined tube sedimentation tank to remove suspended matter and sludge in the water; 6. Using a disinfection tank and adding chlorine dioxide for disinfection.

[0003] However, in actual operation, the wastewater contains a large amount of flour, and the entire baking wastewater treatment system will produce a large amount of sludge during operation. The existing technology uses an inclined tube sedimentation tank set in the last process to remove the sludge, which makes the sludge feeding process during sludge treatment too long, which is not conducive to sludge treatment. In addition, the current baking wastewater treatment system usually uses a box filter press to dehydrate the sludge, but the box filter press is an intermittent treatment, and its sludge processing capacity per unit time is small, which cannot meet the needs of the baking wastewater treatment process and reduces the wastewater treatment efficiency.

[0004] Therefore, a wastewater treatment device after baking food production is proposed. Summary of the Invention

[0005] In view of the problems existing in the prior art, the object of the present invention is to provide a wastewater treatment device after baking food production, which can shorten the sludge process and increase the sludge treatment volume per unit time.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] A device for treating wastewater after baking food production, comprising a treatment tank body, The treatment tank body is sequentially provided with a water collection tank, a regulating tank, an air flotation coagulation tank, an anaerobic tank and a disinfection tank; it also includes a primary sedimentation tank, which is arranged between the regulating tank and the air flotation coagulation tank, and is used to collect the sludge produced by the regulating tank; a secondary sedimentation tank, which is arranged between the anaerobic tank and the disinfection tank, and is used to further collect the sludge from the sewage after anaerobic decomposition treatment; and a collecting pipe, which is provided with a plurality of pipes, which are connected to the primary sedimentation tank, the air flotation coagulation tank, the anaerobic tank, the secondary sedimentation tank and the disinfection tank through a submersible sewage pump arranged at one end of the collecting pipe, so as to collect the sludge produced in each step; a sludge tank is arranged on one side of the treatment tank body, and is used to integrate and store the sludge collected by each collecting pipe; The online dewatering mechanism is arranged on one side of the sludge tank and is used to dewater the sludge inside the sludge tank. The online dewatering mechanism and the sludge tank are connected through a sludge inlet pipe and a submersible sewage pump arranged in the sludge tank.

[0008] Furthermore, the online dewatering mechanism includes a base plate arranged on one side of the sludge tank, with two support frames symmetrically provided on both sides of the upper surface of the base plate. The two support frames are connected to a transmission shaft for common rotation through bearings, one end of one of the support frames is fixedly connected to a No. 1 motor, and the output end of the No. 1 motor is fixedly connected to the transmission shaft; The outer cylindrical surface of the transmission shaft is fixedly connected with a mounting cylinder, and the outer cylindrical surface of the mounting cylinder is annularly provided with three filter press mechanisms; both ends of the three filter press mechanisms are provided with a filtrate discharge mechanism; and a filter material feeding mechanism is also provided in the middle of the bottom of the base plate; One side of the base plate is provided with a conveyor belt on the inner surface, the top of one side of the base plate is fixedly connected to a mounting plate, an industrial camera is provided in the middle position of the lower surface of the mounting plate, two filter press telescopic rods are symmetrically fixedly connected on both sides of the lower surface of the mounting plate, the lower ends of the two filter press telescopic rods are jointly fixedly connected to the filter press plate, and two No. 1 pressure sensors are provided at both ends of the filter press plate close to the filter press mechanism.

[0009] Furthermore, the filter press mechanism includes a skeleton plate fixedly connected to the outer cylindrical surface of the mounting cylinder, the bottom of the side surface of the skeleton plate fixedly connected to a flexible bottom membrane, one side of the flexible bottom membrane fixedly connected to a movable plate, two flexible outer diaphragms symmetrically fixedly connected on both sides of the movable plate and the skeleton plate, two filter mesh layers symmetrically fixedly connected on both sides of the movable plate and the skeleton plate near the flexible outer diaphragms, the top of the movable plate and the skeleton plate fixedly connected to a flexible top membrane, and the movable plate, the skeleton plate, the flexible outer diaphragm and the flexible top membrane together form a closed cavity, and the flexible outer diaphragm and the flexible top membrane are both rubber components, and the filter mesh layer is a flexible filter mesh; Two feed ports are symmetrically provided on both sides of the upper surface of the skeleton plate, and filtrate outlets are opened at the bottom of both sides of the skeleton plate, and the filtrate outlets are connected to the closed cavity; a filter cake unloading mechanism is provided on the outer surface of one side of the movable plate, and two automatic reset mechanisms are symmetrically provided at both ends of the movable plate and the bottom of the skeleton plate.

[0010] Furthermore, the automatic reset mechanism includes an annular groove formed on the outer surface of the mounting cylinder, a fixed base block is fixedly connected to the inside of the annular groove, and the fixed base block is fixedly connected to the skeleton plate, one end of the fixed base block is fixedly connected to spring No. 1, one end of the spring No. 1 is fixedly connected to the movable base block, the upper end of the movable base block is fixedly connected to the movable plate, and the lower end of the movable base block is slidably connected to the annular groove.

[0011] Furthermore, the filter cake discharge mechanism is arranged at the bottom of the outer surface of one side of the movable plate, so as to ensure a larger contact area between the movable plate and the filter press plate; The filter cake unloading mechanism includes a filter cake discharging frame fixedly connected to the outer surface of one side of the movable plate, the outer surface of one side of the filter cake discharging frame is fixedly connected to the No. 2 motor, the output end of the No. 2 motor passes through the filter cake discharging frame and is fixedly connected to the baffle, and sealing strips are fixedly connected on both sides of the baffle.

[0012] Furthermore, the filter material feeding mechanism includes two retaining plates symmetrically fixedly connected to both sides of the upper surface of the base plate, and a slide groove is provided on the upper ends of the two retaining plates. The slide groove is slidingly connected inside the slide groove, and one end of the two slides is commonly fixed to the strip plate. The positions corresponding to the feed ports on both sides of the upper surface of the strip plate are provided with connecting mechanisms, and the connecting mechanisms are interconnected with the mud inlet pipe through a flexible tube fixed thereto.

[0013] Furthermore, the upper surface of the retaining plate is arranged in an arc shape, and the curvature of the arc is the same as the curvature of the mounting cylinder.

[0014] Furthermore, the connecting mechanism includes a control tube fixedly connected to the upper surface of the strip plate, and the control tube is connected to the mud inlet pipe. A solenoid valve is provided inside the control tube, and two No. 2 pressure sensors are symmetrically provided on both sides of the upper surface of the control tube. The upper ends of the two No. 2 pressure sensors are commonly fixedly connected to the electromagnet, a one-way valve is provided inside the feed port, and the bottom of the feed port is magnetic metal.

[0015] Furthermore, the straight line distribution direction formed by the two No. 2 pressure sensors is perpendicular to the strip plate.

[0016] Furthermore, the filtrate discharge mechanism includes a collecting ring fixedly connected to both ends of the filter press mechanism, and the collecting ring is connected to the filtrate outlet. Two support rods are symmetrically fixedly connected to the upper surface of the base plate on both sides, and the upper ends of the two support rods are fixedly connected to the transition trough body. A drainage mechanism is provided between the transition trough body and the collecting ring. A connecting pipe is provided between the two collecting rings and they are connected through the connecting pipe. The drainage mechanism includes an opening No. 1 opened in the middle position of the transition trough body, a connecting rod is fixedly connected inside the transition trough body, and the upper end of the connecting rod is fixedly connected to the lower top ball, a shell with a ring-shaped uniform distribution is provided inside the collecting ring, a No. 2 spring is fixedly connected to the top surface of the shell, the lower end of the No. 2 spring is fixedly connected to the upper top ball, the upper end of the upper top ball is fixedly connected to the liquid outlet pipe, and through holes are provided at the top and bottom ends of the liquid outlet pipe. When the No. 2 spring is in a normal state, the through holes are blocked by the shell.

[0017] Compared with the prior art, the present invention has the following beneficial effects: (1) This application can better remove sludge in the wastewater treatment process by adding a primary sedimentation tank between the regulating tank and the flotation coagulation tank, and setting a secondary sedimentation tank between the anaerobic tank and the disinfection tank. At the same time, the primary sedimentation tank, the flotation coagulation tank, the anaerobic tank, the secondary sedimentation tank, and the disinfection tank are all connected to the sludge tank through submersible sewage pumps and collecting pipes, so that the sludge generated in each treatment step can be delivered to the sludge tank for treatment in a timely manner, thereby shortening the sludge feeding process and accelerating the wastewater treatment efficiency. (2) The present application sets up an online dehydration mechanism to realize the dehydration operation of sludge slurry. Compared with the box filter press in the prior art, the online dehydration mechanism of the present application can work continuously online without stopping. The sludge processing capacity per unit time is larger, which can meet the needs of the baking wastewater treatment process and improve the wastewater treatment efficiency; (3) This application sets an automatic reset mechanism. When the movable plate is pressed against the frame plate, the No. 1 spring between the two will also be compressed. It should be noted that the maximum extrusion force of the filter press plate on the movable plate should be less than the limit pressure of the No. 1 spring to ensure the normal operation of the No. 1 spring. As the filter press work is completed, the filter press plate moves away. Under the action of the elastic potential energy of the No. 1 spring, the movable plate will be driven to open to one side, thereby ensuring the normal operation of the filter press mechanism. (4) The present application provides a filter cake unloading mechanism, which can more conveniently control the removal of the filter cake, realize the automated operation of the filter cake removal, and improve the sewage treatment efficiency. At the same time, the filter cake unloading mechanism also ensures the normal operation of the online dehydration mechanism; (5) This application provides a filter material feeding mechanism, which enables online automatic feeding of the filter press mechanism without stopping the machine for feeding, thereby ensuring the continuous operation of the online dehydration mechanism and further improving the wastewater treatment efficiency; (6) This application sets up a drainage mechanism, which can realize the discharge of filtrate during the operation of the filter press mechanism, ensuring the online operation of the online dehydration mechanism, and at the same time preventing the problem of splashing of filtrate discharged from the filter press mechanism, ensuring the cleanliness of the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the online dehydration mechanism of the present invention; Figure 3 It is a partial structural schematic diagram of the online dehydration mechanism of the present invention; Figure 4 Schematic diagram of the three-dimensional structure of the filter press mechanism of the present invention; Figure 5 Schematic diagram of the structure of the filter press mechanism of the present invention when viewed from above; Figure 6 This is a schematic structural diagram of the filter cake discharge mechanism of the present invention; Figure 7 It is a structural schematic diagram of the filter material feeding mechanism of the present invention; Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure of the connecting mechanism; Figure 9 Schematic diagram of the structure of the filtrate discharge mechanism of the present invention; Figure 10 It is a schematic cross-sectional structure diagram of the drainage mechanism of the present invention.

[0019] Description of the numbers in the figure: 1. Treatment tank; 2. Sludge tank; 3. Online dehydration mechanism; 31. Base plate; 32. Support frame; 33. Motor No. 1; 34. Mounting plate; 35. Conveyor belt; 36. Filter press telescopic rod; 37. Industrial camera; 38. Filter press plate; 39. Pressure sensor No. 1; 310. Drive shaft; 311. Mounting cylinder; 4. Filter press mechanism; 41. Skeleton plate; 42. Filtrate outlet; 43. Flexible bottom membrane; 44. Filter cake discharge mechanism; 441. Filter cake discharge frame; 442. Shielding plate; 443. Sealing strip; 444. Motor No. 2; 45. Movable plate; 46. Flexible outer diaphragm; 47. Filter screen layer; 48. Flexible top membrane; 49. Feed inlet; 410. Fixed base block; 411. Spring No. 1; 412. Movable base block; 413. Annular groove; 5. Filter material feeding mechanism; 51. Retaining plate; 52. Slide; 53. Slider; 54. Flexible tube; 55. Strip plate; 56. Connecting mechanism; 561. One-way valve; 562. Control tube; 563. Solenoid valve; 564. No. 2 pressure sensor; 565. Electromagnet; 6. Filtrate discharge mechanism; 61. Collector ring; 62. Transition tank; 63. Drainage mechanism; 631. Opening No. 1; 632. Upper ball; 633. Spring No. 2; 634. Liquid outlet pipe; 635. Housing; 636. Lower ball; 637. Connecting rod; 64. Support rod; 65. Connecting pipe; 7. Equalization tank; 8. Primary sedimentation tank; 9. Flotation coagulation tank; 10. Anaerobic tank; 11. Secondary sedimentation tank; 12. Disinfection tank; 14. Slurry inlet pipe; 15. Collecting pipe; 16. Water collection tank. DETAILED DESCRIPTION

[0020] 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; it is obvious that 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.

[0021] See also Figures 1 to 10 , a wastewater treatment device after baking food production, The main building parameters are as follows: Water collection tank: collects incoming water, reinforced concrete structure, structure size 3.0 m×2.0 m×2.5 m, the water collection tank is installed with a mixing submersible sewage pump, the outlet water is connected to a rotary solid-liquid separator with a flow rate of 25 m3 / h, filter mesh aperture 0.5 mm, and motor power 1.5 kW.

[0022] Regulating pond: The structure dimensions are 8.9 m×6.5 m×3.5 m, the effective pool capacity is 175 m3, the hydraulic retention time is 8.4h, and it is used to regulate water quality.

[0023] Primary sedimentation tank: diameter 5.4 m, surface load 0.988 m3 / (m2·h), equipped with 1 set of central sedimentation and water distribution system, 1 set of sludge collection hopper and sludge discharge system.

[0024] Flotation coagulation tank: 1 pipeline mixer, 1 dissolved air tank, 1 reflux dissolved air pump, specifications: Q=10 m3 / h, H=40m, N=4 kW, 2 vortex air compressors, the flotation coagulation tank body has been treated with carbon steel anti-corrosion, and the wastewater treatment capacity is 21 m3 / h.

[0025] UASB anaerobic tank: The single tank structure size is 6.0 m×6.0 m×7.0 m, the effective tank capacity is 468 m3, the volume load is 5 kg / (m3·d), there are 8 sets of three-phase separators, 30 sets of anaerobic water distributors, and 2 internal circulation reflux pumps. The parameters are Q=9 m3 / h, H=15 m, and N=0.75 kW.

[0026] Secondary sedimentation tank: 1, steel-concrete structure, structure size 4.0m×6.5m×5.0m, surface load 0.8 m3 / (m2·h), for mud and water separation of sewage, using inclined tube sedimentation.

[0027] Other structures: The dosing equipment room is newly built on the regulating tank to place and install dosing equipment, with dimensions of 4.5 m×2.7 m×3.5 m.

[0028] It includes a treatment tank body 1, inside which a water collecting tank 16, a regulating tank 7, an air flotation coagulation tank 9, an anaerobic tank 10 and a disinfection tank 12 are sequentially arranged; a primary sedimentation tank 8 is arranged between the regulating tank 7 and the air flotation coagulation tank 9, and is used to collect the sludge produced by the regulating tank 7; a secondary sedimentation tank 11 is arranged between the anaerobic tank 10 and the disinfection tank 12, and is used to further collect sludge from the sewage after anaerobic decomposition treatment; and a collecting pipe 15 is provided with a plurality of pipes, which are respectively connected to the primary sedimentation tank 8, the air flotation coagulation tank 9, the anaerobic tank 10, the secondary sedimentation tank 11 and the disinfection tank 12 through a submersible sewage pump arranged at one end of the collecting pipe 15, so as to collect the sludge produced in each step; a sludge tank 2 is arranged on one side of the treatment tank body 1, and is used to integrate and store the sludge collected by each collecting pipe 15; The online dewatering mechanism 3 is arranged on one side of the sludge tank 2 and is used to dewater the sludge inside the sludge tank 2. The online dewatering mechanism 3 and the sludge tank 2 are connected through the sludge inlet pipe 14 in conjunction with the submersible sewage pump provided in the sludge tank 2.

[0029] The present application adds a primary sedimentation tank 8 between the regulating tank 7 and the flotation coagulation tank 9, and sets a secondary sedimentation tank 11 between the anaerobic tank 10 and the disinfection tank 12, so as to better remove the sludge in the wastewater treatment process. At the same time, the primary sedimentation tank 8, the flotation coagulation tank 9, the anaerobic tank 10, the secondary sedimentation tank 11, and the disinfection tank 12 are all connected to the sludge tank 2 through a submersible sewage pump and a collecting pipe 15, so that the sludge generated in each treatment step can be delivered to the sludge tank 2 for treatment in time, thereby shortening the sludge feeding process and accelerating the wastewater treatment efficiency.

[0030] like Figure 2 and Figure 3 As shown, the online dewatering mechanism 3 includes a base plate 31 provided on one side of the sludge tank 2. Two support frames 32 are symmetrically provided on both sides of the upper surface of the base plate 31. The two support frames 32 are connected to a transmission shaft 310 for common rotation through bearings. One end of one of the support frames 32 is fixedly connected to a No. 1 motor 33, and the output end of the No. 1 motor 33 is fixedly connected to the transmission shaft 310. The outer circumference of the transmission shaft 310 is fixedly connected to a mounting cylinder 311. The outer circumference of the mounting cylinder 311 is annularly provided with three filter press mechanisms 4. The three filter press mechanisms 4 are provided with a filtrate discharge mechanism 6 at both ends. A filter material feeding mechanism 5 is also provided at the middle position of the bottom of the base plate 31. One side of the base plate 31 is provided with a conveyor belt 35 on the inner surface, the top of one side of the base plate 31 is fixedly connected to a mounting plate 34, an industrial camera 37 is provided in the middle position of the lower surface of the mounting plate 34, two filter press telescopic rods 36 are symmetrically fixedly connected to the lower surface of the mounting plate 34 on both sides, the lower ends of the two filter press telescopic rods 36 are commonly fixedly connected to a filter press plate 38, and two No. 1 pressure sensors 39 are provided at both ends of the filter press plate 38 close to the filter press mechanism 4.

[0031] like Figure 4 As shown, the filter press mechanism 4 includes a skeleton plate 41 fixedly connected to the outer circumferential surface of the mounting cylinder 311, a flexible bottom membrane 43 fixedly connected to the bottom of the side surface of the skeleton plate 41, a movable plate 45 fixedly connected to one side of the flexible bottom membrane 43, two flexible outer diaphragms 46 symmetrically fixedly connected to the movable plate 45 and the two sides of the skeleton plate 41, two filter screen layers 47 symmetrically fixedly connected to the movable plate 45 and the inner sides of the skeleton plate 41 near the flexible outer diaphragms 46, a flexible top membrane 48 fixedly connected to the top of the movable plate 45 and the skeleton plate 41, and the movable plate 45, the skeleton plate 41, the flexible outer diaphragms 46 and the flexible top membrane 48 together form a closed cavity, and the flexible outer diaphragms 46 and the flexible top membrane 48 are both rubber components, and the filter screen layer 47 is a flexible filter screen; Two feed ports 49 are symmetrically provided on both sides of the upper surface of the skeleton plate 41, and filtrate outlets 42 are provided at the bottom of both sides of the skeleton plate 41, and the filtrate outlets 42 are connected to the closed cavity; a filter cake unloading mechanism 44 is provided on the outer surface of one side of the movable plate 45, and two automatic reset mechanisms are symmetrically provided at both ends of the movable plate 45 and the bottom of the skeleton plate 41.

[0032] When the online dewatering mechanism 3 is working, first, the No. 1 motor 33 rotates under the control of the control system, driving the transmission shaft 310 and the mounting cylinder 311 to rotate, and then driving the filter press mechanism 4 fixedly connected to the outer cylindrical surface of the mounting cylinder 311 to rotate. When the filter press mechanism 4 passes through the filter material feeding mechanism 5, the filter material feeding mechanism 5 injects sludge slurry into the filter press mechanism 4, and then the filter press mechanism 4 continues to rotate under the drive of the No. 1 motor 33. The industrial camera 37 detects the position status of the filter press mechanism 4 in real time. When the filter press mechanism 4 arrives under the mounting plate 34, the control system controls the filter press telescopic rod 36 to extend, driving the filter press plate 38 to descend, blocking the movement trajectory of the filter press mechanism 4. The No. 1 motor 33 continues to drive the filter press mechanism 4 to rotate, and the filter press mechanism 4 cooperates with the filter press plate 38 to start dewatering the sludge slurry. During the specific dehydration operation, the movable plate 45 on the filter press mechanism 4 first contacts the filter press plate 38. Due to the obstruction of the filter press plate 38, the movable plate 45 cannot continue to move, and the No. 1 motor 33 still drives the skeleton plate 41 to move toward the movable plate 45. Therefore, the enclosed space composed of the movable plate 45, the flexible outer diaphragm 46, the flexible top membrane 48 and the skeleton plate 41 is gradually compressed, and the internal sludge slurry is filtered through the filter mesh layer 47. The filter cake stays in the enclosed space composed of the filter mesh layer 47, the movable plate 45, the flexible top membrane 48 and the skeleton plate 41, and the filtrate is discharged into the filtrate discharge mechanism 6 through the filtrate outlet 42 opened on the skeleton plate 41; as the No. 1 motor 33 continues to rotate, the squeeze between the filter press plate 38 and the movable plate 45 is gradually compressed. The pressure will become stronger and stronger, and the No. 1 pressure sensor 39 will detect the pressure between the two in real time. After reaching the predetermined pressure value, the control system controls the filter press telescopic rod 36 to retract upward, driving the filter press plate 38 to rise, and no longer blocking the movable plate 45 (note that in order to reduce the friction between the filter press plate 38 and the movable plate 45 when it rises, a ball bearing can be set on the side surface of the filter press plate 38, which is not drawn in the figure). Then the filter press mechanism 4 continues to rotate driven by the No. 1 motor 33, and the control system controls the filter cake unloading mechanism 44 to work, and unload the filter cake in the enclosed space composed of the filter screen layer 47, the movable plate 45, the flexible top membrane 48 and the skeleton plate 41. The filter cake falls onto the conveyor belt 35 for transportation, completing the dehydration operation of the sludge slurry; The present application is capable of realizing the dehydration operation of sludge slurry by setting up an online dehydration mechanism 3. Compared with the box filter press in the prior art, the online dehydration mechanism 3 of the present application can work continuously online without stopping. The sludge processing volume per unit time is larger, which can meet the needs of the baking wastewater treatment process and improve the wastewater treatment efficiency.

[0033] like Figure 2 and Figure 5 As shown, the automatic reset mechanism includes an annular groove 413 provided on the outer circumferential surface of the mounting cylinder 311, a fixed base block 410 is fixedly connected inside the annular groove 413, and the fixed base block 410 is fixedly connected to the skeleton plate 41, one end of the fixed base block 410 is fixedly connected to a No. 1 spring 411, one end of the No. 1 spring 411 is fixedly connected to a movable base block 412, the upper end of the movable base block 412 is fixedly connected to the movable plate 45, and the lower end of the movable base block 412 is slidably connected to the annular groove 413.

[0034] After being squeezed by the filter press plate 38, the filter press mechanism 4 is in a flat state as a whole, which is not conducive to the next feeding. The present application sets an automatic reset mechanism. When the movable plate 45 is pressed against the skeleton plate 41, the No. 1 spring 411 between the two will also be compressed. It should be noted here that the maximum extrusion force of the filter press plate 38 on the movable plate 45 should be less than the limit pressure of the No. 1 spring 411 to ensure the normal operation of the No. 1 spring 411. As the filtration work is completed, the filter press plate 38 moves away, and under the action of the elastic potential energy of the No. 1 spring 411, it will drive the movable plate 45 to open to one side, and the filter press mechanism 4 will open as a whole, thereby ensuring the normal operation of the filter press mechanism 4.

[0035] like Figure 4 and Figure 6 As shown, the filter cake discharge mechanism 44 is provided at the bottom of the outer surface of one side of the movable plate 45, for ensuring that the movable plate 45 has a larger contact area with the filter press plate 38; The filter cake unloading mechanism 44 includes a filter cake discharging frame 441 fixedly connected to the outer surface of one side of the movable plate 45, and the filter cake discharging frame 441 is connected to the movable plate 45. The outer surface of one side of the filter cake discharging frame 441 is fixedly connected to the No. 2 motor 444. The output end of the No. 2 motor 444 passes through the filter cake discharging frame 441 and is fixedly connected to the baffle plate 442. Both sides of the baffle plate 442 are fixedly connected to the sealing strip 443.

[0036] When the filter cake discharge mechanism 44 is working, the control system first controls the second motor 444 to work, driving the shielding plate 442 to rotate, and the shielding plate 442 changes from a vertical state to a horizontal state ( Figure 6 As shown), the channel between the filter cake discharge frame 441 and the movable plate 45 is opened, so that the filter cake in the enclosed space composed of the filter screen layer 47, the movable plate 45, the flexible top membrane 48 and the skeleton plate 41 is discharged through the filter cake discharge frame 441. After unloading, the shielding plate 442 is reset under the drive of the second motor 444 to seal the enclosed space, and the sealing strip 443 ensures the sealing of the connection. By setting the filter cake discharge mechanism 44, the present application can more conveniently control the removal of the filter cake, realize the automatic operation of the filter cake removal, and improve the sewage treatment efficiency. At the same time, the filter cake discharge mechanism 44 also ensures the normal operation of the online dehydration mechanism 3.

[0037] like Figure 7 As shown, the filter material feeding mechanism 5 includes two retaining plates 51 symmetrically fixedly connected to both sides of the upper surface of the base plate 31, and a slide groove 52 is provided on the upper end of the two retaining plates 51. The slide groove 52 is internally connected to a slider 53 for sliding connection, and one end of the two sliders 53 is commonly fixedly connected to a strip plate 55. Connecting mechanisms 56 are provided at positions corresponding to the feed port 49 on both sides of the upper surface of the strip plate 55, and the connecting mechanisms 56 are connected to the mud inlet pipe 14 through a flexible tube 54 fixedly connected thereto.

[0038] like Figure 7As shown, the upper surface of the retaining plate 51 is arranged in an arc shape, and the curvature of the arc is the same as the curvature of the mounting cylinder 311 .

[0039] like Figure 8 As shown, the connecting mechanism 56 includes a control tube 562 fixedly connected to the upper surface of the strip plate 55, and the control tube 562 is communicated with the mud inlet pipe 14, a solenoid valve 563 is provided inside the control tube 562, and two No. 2 pressure sensors 564 are symmetrically provided on both sides of the upper surface of the control tube 562, and the upper ends of the two No. 2 pressure sensors 564 are commonly fixedly connected to the electromagnet 565, a one-way valve 561 is provided inside the feed port 49, and the bottom of the feed port 49 is magnetic metal.

[0040] like Figure 8 As shown, the straight line formed by the two No. 2 pressure sensors 564 is distributed perpendicularly to the strip plate 55.

[0041] When the filter material feeding mechanism 5 is working, first, driven by the No. 1 motor 33, the filter press mechanism 4 rotates accordingly. When the feed port 49 on the filter press mechanism 4 contacts the electromagnet 565, the electromagnet 565 is pressurized and transmits pressure to the No. 2 pressure sensor 564 (the pressure sensor has a certain elasticity). As the filter press mechanism 4 continues to rotate, the feed port 49 will gradually overlap with the control tube 562. After the two are completely overlapped, the two No. 2 pressure sensors 564 are evenly pressurized at this time, and the readings of the two are consistent. The control system detects that After the reading signal is received, the control solenoid valve 563 is opened, and the sludge slurry is pumped into the control pipe 562 through the flexible pipe 54 and enters the filter press mechanism 4 through the feed port 49 (the one-way valve 561 is inwardly conductive). At the same time, the control system controls the electromagnet 565 to generate a magnetic field, which is attracted and fixed to the feed port 49 (the feed port 49 is a magnetic metal). When the No. 1 motor 33 continues to rotate, it will drive the control pipe 562 and the strip plate 55 to rotate synchronously with the filter press mechanism 4 inside the chute 52 to ensure sufficient feeding time. The present application provides a filter material feeding mechanism 5, which can realize online automatic feeding of the filter press mechanism 4 without stopping the machine for feeding, thereby ensuring the continuous operation of the online dehydration mechanism 3 and further improving the wastewater treatment efficiency.

[0042] like Figure 9 and Figure 10 As shown, the filtrate discharge mechanism 6 includes a collector ring 61 fixedly connected to both ends of the filter press mechanism 4, and the collector ring 61 is connected to the filtrate outlet 42. Two support rods 64 are symmetrically fixedly connected to the upper surface of the base plate 31 on both sides, and the upper ends of the two support rods 64 are fixedly connected to the transition trough 62. A drainage mechanism 63 is provided between the transition trough 62 and the collector ring 61. A connecting pipe 65 is provided between the two collector rings 61 and is connected through the connecting pipe 65. The drainage mechanism 63 includes an opening No. 1 631 opened in the middle position of the transition trough body 62, a connecting rod 637 is fixedly connected inside the transition trough body 62, and the upper end of the connecting rod 637 is fixedly connected to the lower top ball 636, and a shell 635 uniformly distributed in a ring shape is provided inside the collecting ring 61, and a No. 2 spring 633 is fixedly connected to the top surface of the shell 635, and the lower end of the No. 2 spring 633 is fixedly connected to the upper top ball 632, and the upper end of the upper top ball 632 is fixedly connected to the liquid outlet pipe 634, and the top and bottom ends of the liquid outlet pipe 634 are provided with through holes. When the No. 2 spring 633 is in a normal state, the upper end through hole is blocked by the shell 635.

[0043] When the filter press mechanism 4 is working, since the filtrate outlet 42 and the collector ring 61 are connected to each other, the filtrate will be discharged to the collector ring 61 inside the filtrate discharge mechanism 6 through the filtrate outlet 42. In the process of the collector ring 61 rotating with the filter press mechanism 4, the filtrate inside the filtrate discharge mechanism 6 will always be at the bottom of the collector ring 61 under the action of gravity. As the collector ring 61 rotates, when the drainage mechanism 63 at the bottom of the collector ring 61 works, the filtrate inside the collector ring 61 will enter the transition trough 62 and be discharged through the connecting pipe 65. When the drainage mechanism 63 is working, the upper ball 632 will first be squeezed inward by the lower ball 636, and drive the second spring 633 to contract and accumulate elastic potential energy. As the upper ball 632 rises, the liquid outlet pipe 634 fixed to it will rise accordingly, and then the through hole at the upper end of the liquid outlet pipe 634 will enter the interior of the collecting ring 61, and then connect the collecting ring 61. The internal filtrate flows out along the through hole at the upper end of the liquid outlet pipe 634, and flows into the transition tank body 62 through the through hole at the lower end of the liquid outlet pipe 634, and enters the interior of the transition tank body 62 through the first opening 631, completing the drainage work; By setting up a drainage mechanism 63, the present application can discharge the filtrate during the operation of the filter press mechanism 4, ensuring the online operation of the online dehydration mechanism 3, and at the same time preventing the filtrate discharged from the filter press mechanism 4 from splashing, ensuring a clean environment.

[0044] Instructions for use: When the present invention is in use, the sludge slurry produced in each step is first transported to the sludge pool 2 through the submersible sewage pump and the collecting pipe 15. The sludge pool 2 sends the sludge to the online dehydration mechanism 3 for dehydration through the submersible sewage pump and the sludge inlet pipe 14. When dehydrating, firstly, the No. 1 motor 33 is rotated under the control of the control system to drive the transmission shaft 310 and the mounting cylinder 311 to rotate, and then the filter press mechanism 4 fixedly connected to the outer surface of the mounting cylinder 311 is driven to rotate. When the filter press mechanism 4 passes through the filter material feeding mechanism 5, the filter material feeding mechanism 5 feeds the filter material into the filter press mechanism 4. The sludge slurry is injected into the filter press mechanism 4, and then the filter press mechanism 4 continues to rotate under the drive of the No. 1 motor 33. The industrial camera 37 detects the position status of the filter press mechanism 4 in real time. When the filter press mechanism 4 arrives under the mounting plate 34, the control system controls the filter press telescopic rod 36 to extend, driving the filter press plate 38 to descend, blocking the movement trajectory of the filter press mechanism 4. The No. 1 motor 33 continues to drive the filter press mechanism 4 to rotate, and the filter press mechanism 4 cooperates with the filter press plate 38 to start dehydrating the sludge slurry. After the dehydration operation is completed, the filter material is unloaded through the filter cake unloading mechanism 44 to complete the dehydration of the sludge slurry.

[0045] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A device for treating wastewater after baking food production, comprising a treatment tank (1), The treatment tank body (1) is provided with a water collection tank (16), a regulating tank (7), an air flotation coagulation tank (9), an anaerobic tank (10) and a disinfection tank (12) in sequence; Its characteristics are: Also includes, The primary sedimentation tank (8) is provided between the regulating tank (7) and the flotation coagulation tank (9) and is used to collect the sludge produced by the regulating tank (7); The secondary sedimentation tank (11) is arranged between the anaerobic tank (10) and the disinfection tank (12) and is used to collect sludge from the sewage after anaerobic decomposition treatment; Furthermore, a plurality of collecting pipes (15) are provided, which are connected to the primary sedimentation tank (8), the flotation coagulation tank (9), the anaerobic tank (10), the secondary sedimentation tank (11), and the disinfection tank (12) through a submersible sewage pump provided at one end of the collecting pipe (15), so as to collect the sludge produced in each step; A sludge tank (2) is provided on one side of the treatment tank body (1) and is used to integrate and store the sludge slurry collected by each collecting pipe (15); The online dewatering mechanism (3) is arranged on one side of the sludge tank (2) and is used to dewater the sludge inside the sludge tank (2). The online dewatering mechanism (3) and the sludge tank (2) are connected through a sludge inlet pipe (14) in conjunction with a submersible sewage pump arranged in the sludge tank (2).

2. The wastewater treatment device after baking food production according to claim 1, characterized in that: The online dewatering mechanism (3) comprises a base plate (31) arranged on one side of the sludge tank (2), two support frames (32) are symmetrically provided on both sides of the upper surface of the base plate (31), the two support frames (32) are connected to a transmission shaft (310) for common rotation via bearings, one end of one of the support frames (32) is fixedly connected to a No. 1 motor (33), and the output end of the No. 1 motor (33) is fixedly connected to the transmission shaft (310); The outer circumference of the transmission shaft (310) is fixedly connected to a mounting cylinder (311), and the outer circumference of the mounting cylinder (311) is annularly provided with three filter press mechanisms (4); both ends of the three filter press mechanisms (4) are provided with a filtrate discharge mechanism (6); and a filter material feeding mechanism (5) is also provided at the middle position of the bottom of the base plate (31); One side of the base plate (31) is provided with a conveyor belt (35) on its inner surface, the top end of one side of the base plate (31) is fixedly connected to a mounting plate (34), an industrial camera (37) is provided at the middle position of the lower surface of the mounting plate (34), two filter press telescopic rods (36) are symmetrically fixedly connected to the lower surface of the mounting plate (34), the lower ends of the two filter press telescopic rods (36) are commonly fixedly connected to a filter press plate (38), and two No. 1 pressure sensors (39) are provided at both ends of the filter press plate (38) close to the filter press mechanism (4).

3. The wastewater treatment device after baking food production according to claim 2, characterized in that: The filter press mechanism (4) includes a skeleton plate (41) fixedly connected to the outer cylindrical surface of the mounting cylinder (311), the bottom of the side surface of the skeleton plate (41) is fixedly connected to a flexible bottom membrane (43), one side of the flexible bottom membrane (43) is fixedly connected to a movable plate (45), the movable plate (45) and the two sides of the skeleton plate (41) are symmetrically fixedly connected to two flexible outer diaphragms (46), the movable plate (45) and the two sides of the skeleton plate (41) are symmetrically fixedly connected to two filter screen layers (47), the movable plate (45) and the top of the skeleton plate (41) are fixedly connected to a flexible top membrane (48), and the movable plate (45), the skeleton plate (41), the flexible outer diaphragm (46) and the flexible top membrane (48) together form a closed cavity, and the flexible outer diaphragm (46) and the flexible top membrane (48) are both rubber components, and the filter screen layer (47) is a flexible filter screen; Two feed ports (49) are symmetrically provided on both sides of the upper surface of the skeleton plate (41), and filtrate outlets (42) are provided at the bottom of both sides of the surface of the skeleton plate (41), and the filtrate outlets (42) are communicated with the closed cavity; a filter cake discharge mechanism (44) is provided on the outer surface of one side of the movable plate (45), and two automatic reset mechanisms are symmetrically provided at both ends of the bottom of the movable plate (45) and the skeleton plate (41).

4. The device for treating wastewater after baking food production according to claim 3, characterized in that: The automatic reset mechanism includes an annular groove (413) provided on the outer circumferential surface of the mounting cylinder (311), a fixed base block (410) is fixedly connected inside the annular groove (413), and the fixed base block (410) is fixedly connected to the skeleton plate (41), one end of the fixed base block (410) is fixedly connected to a No. 1 spring (411), one end of the No. 1 spring (411) is fixedly connected to a movable base block (412), the upper end of the movable base block (412) is fixedly connected to the movable plate (45), and the lower end of the movable base block (412) is slidably connected to the annular groove (413).

5. The device for treating wastewater after baking food production according to claim 3, characterized in that: The filter cake discharge mechanism (44) is arranged at the bottom of the outer surface of one side of the movable plate (45) to ensure that the movable plate (45) and the filter press plate (38) have a larger contact area; The filter cake discharge mechanism (44) comprises a filter cake discharge frame (441) fixedly connected to the outer surface of one side of the movable plate (45), and the filter cake discharge frame (441) is connected to the movable plate (45), and the outer surface of one side of the filter cake discharge frame (441) is fixedly connected to the second motor (444), and the output end of the second motor (444) passes through the filter cake discharge frame (441) and is fixedly connected to the shielding plate (442), and both sides of the shielding plate (442) are fixedly connected to the sealing strip (443).

6. The device for treating wastewater after baking food production according to claim 3, characterized in that: The filter material feeding mechanism (5) comprises two retaining plates (51) symmetrically fixedly connected to both sides of the upper surface of the base plate (31), the upper ends of the two retaining plates (51) are each provided with a slide groove (52), the inner portion of the slide groove (52) is slidably connected to a slider (53), one end of the two sliders (53) is commonly fixedly connected to a strip plate (55), and the positions of the two sides of the upper surface of the strip plate (55) corresponding to the feed port (49) are each provided with a connecting mechanism (56), and the connecting mechanism (56) is communicated with the mud inlet pipe (14) through a flexible tube (54) fixedly connected thereto.

7. The device for treating wastewater after baking food production according to claim 6, characterized in that: The upper surface of the retaining plate (51) is arranged in an arc shape, and the curvature of the arc is the same as the curvature of the mounting cylinder (311).

8. The device for treating wastewater after baking food production according to claim 6, characterized in that: The connecting mechanism (56) includes a control tube (562) fixedly connected to the upper surface of the strip plate (55), and the control tube (562) is communicated with the mud inlet pipe (14). A solenoid valve (563) is provided inside the control tube (562). Two No. 2 pressure sensors (564) are symmetrically provided on both sides of the upper surface of the control tube (562). The upper ends of the two No. 2 pressure sensors (564) are commonly fixedly connected to an electromagnet (565). A one-way valve (561) is provided inside the feed port (49), and the bottom of the feed port (49) is made of magnetic metal.

9. The device for treating wastewater after baking food production according to claim 8, characterized in that: The straight line distribution direction formed by the two No. 2 pressure sensors (564) is perpendicular to the strip plate (55).

10. The device for treating wastewater after baking food production according to claim 3, characterized in that: The filtrate discharge mechanism (6) includes a collecting ring (61) fixedly connected to both ends of the filter press mechanism (4), and the collecting ring (61) is connected to the filtrate outlet (42). Two support rods (64) are symmetrically fixedly connected to the upper surface of the base plate (31), and the upper ends of the two support rods (64) are fixedly connected to the transition trough (62). A drainage mechanism (63) is provided between the transition trough (62) and the collecting ring (61). A connecting pipe (65) is provided between the two collecting rings (61) and the two collecting rings are connected through the connecting pipe (65). The drainage mechanism (63) includes a No. 1 opening (631) opened in the middle of the transition trough (62), a connecting rod (637) is fixedly connected inside the transition trough (62), and the upper end of the connecting rod (637) is fixedly connected to the lower top ball (636), and a shell (635) uniformly distributed in an annular shape is provided inside the collecting ring (61), a No. 2 spring (633) is fixedly connected to the top surface of the shell (635), the lower end of the No. 2 spring (633) is fixedly connected to the upper top ball (632), the upper end of the upper top ball (632) is fixedly connected to the liquid outlet pipe (634), and the top and bottom ends of the liquid outlet pipe (634) are both provided with through holes, and when the No. 2 spring (633) is in a normal state, the through hole is blocked by the shell (635).

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