Stable regulation and control device for biochemical treatment sludge character of sewage plant

Abstract

The invention discloses a sewage plant biochemical treatment sludge character stability regulation and control device, and relates to the technical field of sewage treatment.The sewage plant biochemical treatment sludge character stability regulation and control device comprises a fixed box, a drying box is fixedly installed at the bottom of the fixed box, supporting seats are symmetrically installed on the front side and the rear side of the fixed box, and a sliding extrusion mechanism is installed at the top of the fixed box; positioning seats are symmetrically mounted on the right side of the sliding extrusion mechanism, feeding pipes are fixedly mounted in the positioning seats, discharging seats are fixedly connected to the bottom ends of the feeding pipes, a limiting frame is placed in the drying box, and a filtering plate is fixedly mounted in the limiting frame; through structural optimization of core links such as sliding extrusion, drying and steam recovery, the stability of sludge dewatering and drying and character regulation and control is effectively improved, the problem of water resource waste of a traditional device is solved, meanwhile, operation convenience and energy consumption control are taken into consideration, and comprehensive benefits are remarkable.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a device for stabilizing and regulating the properties of sludge from biochemical treatment in wastewater plants. Background Technology

[0002] With the acceleration of urbanization and the expansion of industrial production, sewage discharge continues to rise. As the core unit of water pollution control, sewage treatment plants directly affect the quality of the water environment. Due to its advantages such as low cost, thorough degradation, and environmental friendliness, biochemical treatment technology has become the mainstream treatment process for sewage treatment plants. As the core product of the biochemical treatment process, the stability of sludge directly determines the ease of subsequent sludge disposal. Sludge properties mainly include key indicators such as water content, settling performance, activity, viscosity, and pollutant enrichment. Among them, sludge property stabilization and control devices are needed when controlling the water content of sludge.

[0003] However, existing sludge property stabilization and control devices still have certain shortcomings in use;

[0004] A low-temperature heat pump sludge dryer with extrusion filtration function, as proposed in application number CN202022666171.1, includes a drying chamber. One side of the drying chamber is equipped with an extrusion filtration feeding assembly for feeding material. The output end of the extrusion filtration feeding assembly is connected to a pressing mechanism. The extrusion filtration feeding assembly pre-treats the sludge to be dried by rotating and extruding to remove most of the water from the sludge. Then, a low-pressure heat pump and an electric heating plate dry the sludge, solving the problem of odor caused by excessively high temperatures. Furthermore, the pressing mechanism can press the sludge to be dried to a uniform thickness. After uniform thickness, the sludge is dried, resulting in good drying effect and solving the problem of incomplete sludge drying. However, in actual use, the following problems still exist:

[0005] Although this low-temperature heat pump sludge dryer with extrusion and filtration function removes water from the sludge through rotational extrusion and is equipped with a low-pressure heat pump and electric heating plate to dry the sludge and control the drying properties of the biochemically treated sludge, a small amount of water still remains in the sludge during the drying process. This water turns into steam during the drying process, and the sludge dryer does not have a structure for recovering the steam, which leads to a waste of water resources.

[0006] In view of this, in-depth research was conducted on the above issues, which led to the creation of this case.

[0007] To address the aforementioned issues, an innovative design was developed based on the existing sludge property stabilization and control device for biochemical treatment in wastewater plants. Summary of the Invention

[0008] The purpose of this invention is to provide a device for stabilizing and regulating the properties of sludge from biochemical treatment in wastewater treatment plants, in order to solve the problem mentioned in the background art that although the properties of sludge can be regulated by rotating and squeezing to remove water and by using a low-pressure heat pump and an electric heating plate to dry the sludge, the steam generated by the residual moisture in the sludge during drying is not recovered, resulting in a waste of water resources.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a device for stabilizing and regulating the properties of sludge from a wastewater treatment plant, comprising a fixed box, a drying box fixedly installed at the bottom of the fixed box, support seats symmetrically installed on the front and rear sides of the fixed box, and a sliding extrusion mechanism installed on the top of the fixed box;

[0010] A positioning seat is symmetrically installed on the right side of the sliding extrusion mechanism. A feed pipe is fixedly installed inside the positioning seat, and a discharge seat is fixedly connected to the bottom end of the feed pipe.

[0011] The drying oven has a limiting frame inside, and a filter plate is fixedly installed inside the limiting frame. A guide channel is opened at the bottom of the drying oven, and a liquid outlet pipe is installed at the bottom rear end of the guide channel. A collection pipe is fixedly connected to the liquid outlet end of the liquid outlet pipe.

[0012] A drying and heating mechanism is installed at the bottom of the drying box;

[0013] A disassembly and positioning mechanism is connected between the limiting frame and the drying box.

[0014] The drying oven is equipped with a follow-up heat preservation mechanism at both ends;

[0015] Steam recovery mechanisms are installed at both ends of the fixed box.

[0016] Preferably, the sliding extrusion mechanism includes a transmission screw that rotates through the top of the fixed box. A servo motor is connected to the left end of the transmission screw. The servo motor is fixedly connected to the fixed box via a mounting bracket. A transmission seat is fitted around the outer ring of the transmission screw. Limit seats are fixedly installed on both sides of the transmission seat. The left side of the limit seat is fixedly connected to a positioning seat. A sliding groove is formed inside the end of the limit seat away from the transmission seat. A slider is slidably installed inside the sliding groove. A sliding seat is fixedly installed at the end of the slider near the inner wall of the fixed box. A limiting plate is fixedly installed on the inner side of the front and rear top of the fixed box. A guide groove is formed inside the limiting plate, and the guide groove restricts the sliding trajectory of the sliding seat.

[0017] Preferably, the sliding extrusion mechanism further includes a telescopic rod fixedly installed on the bottom surface of the sliding seat. A connecting seat is fixedly installed at the bottom end of the telescopic rod. A telescopic spring is sleeved on the outer ring of the telescopic rod. The connecting seat forms a telescopic structure with the sliding seat through the telescopic rod and the telescopic spring. A pressure roller is rotatably connected to the bottom of the connecting seat.

[0018] Using the above technical solution, when the servo motor drives the transmission screw to rotate, it can drive the transmission seat to move smoothly along the screw axis. With the sliding cooperation between the sliding groove and the slider in the limit seat, and the trajectory constraint of the guide groove of the limit plate on the sliding seat, it can ensure that the pressure roller always moves along a fixed path and avoid extrusion deviation. The raised ends of the guide groove can keep the pressure roller in the highest position when it is at both ends, which is beneficial to gradually extruding the sludge from both sides to the middle.

[0019] Meanwhile, the buffer structure composed of the telescopic rod and the telescopic spring can buffer the pressure roller during the extrusion process, which helps to avoid the wear and tear on the device caused by rigid extrusion, significantly improves the initial water removal effect of sludge, and reduces the moisture load for subsequent drying processes.

[0020] Preferably, the guide channel is inclined from the front to the inlet of the liquid outlet pipe, and the liquid outlet pipes are evenly distributed at the bottom of the rear end of the guide channel.

[0021] Using the above technical solution, the inclined guide channel can guide the sludge to squeeze water towards the outlet pipe under the action of gravity, avoiding water accumulation at the bottom of the drying chamber. The evenly spaced outlet pipes can quickly and evenly discharge water from the guide channel, preventing the decrease in drying efficiency caused by local water accumulation. At the same time, the water is concentrated through the collection pipe and recycled by connecting to an external collector, which facilitates water resource reuse and effectively reduces water waste.

[0022] Preferably, the disassembly and positioning mechanism includes a sealing plate fixedly installed on the rear side of the limiting frame. The sealing plate is movably fitted and connected to the rear side of the drying box. Positioning blocks are symmetrically installed on the rear side of the sealing plate. A locking rod slides through the interior of the positioning block. A control plate is fixedly installed at the top of the locking rod. A positioning spring is fixedly connected between the control plate and the positioning block. The positioning spring is sleeved with the locking rod. Locking seats are symmetrically installed on the rear side of the drying box. The locking seats are locked and connected to the locking rod.

[0023] By adopting the above technical solution, the locking relationship between the locking rod and the locking seat can be released by pulling the locking rod through the control board, which makes it easy to quickly remove the limiting frame and filter plate from the drying box, facilitates the feeding of the sludge dried blocks on the filter plate, and makes it easy to clean, avoiding blockage that affects the filtration effect.

[0024] The elastic force of the positioning spring keeps the locking rod engaged with the locking seat, ensuring the installation stability of the limit frame during operation. At the same time, the fitting connection between the sealing plate and the drying box reduces steam leakage and improves drying efficiency and steam recovery effect.

[0025] Preferably, the drying and heating mechanism includes heating tubes embedded in the bottom of the drying chamber. The heating tubes are distributed in a serpentine structure. The heat generated by the heating tubes can dry the sludge inside the limiting frame. A controller is fixedly installed on the front side of the drying chamber, and a connecting wire connects the controller to the heating tubes.

[0026] By adopting the above technical solution, the serpentine distribution of heating tubes can significantly increase the contact area with the inside of the drying chamber, so that the heat is evenly distributed in the drying chamber, avoiding local over-drying or under-drying of sludge, effectively ensuring the stability of sludge property control. The controller can control the heating temperature and working time of the heating tubes through the connection line, improving drying efficiency while reducing energy consumption.

[0027] Preferably, the follow-up heat preservation mechanism includes support frames symmetrically installed at the left and right ends of the drying box. An upper follow-up roller is rotatably installed on the top of the support frame, and a lower follow-up roller is rotatably installed on the bottom of the support frame. A follow-up belt is sleeved on the outer ring of the upper and lower follow-up rollers. The follow-up belt is slidably connected through the fixed box. The follow-up belt is fixedly connected to the bottom end of the transmission seat and the outer ring of the discharge seat. The connecting seat is slidably connected through the follow-up belt.

[0028] By adopting the above technical solution, the fixed connection design between the follower belt and the transmission seat and the discharge seat allows the transmission seat to drive the follower belt to move synchronously during the movement of the follower belt. The upper and lower follower rollers provide stable support for the follower belt and reduce the movement resistance. This structure can effectively prevent a large amount of heat from being lost from the drying chamber and prevent external cold air from entering, maintaining a stable high-temperature environment inside the drying chamber, improving drying efficiency. It can also isolate the transmission structure from water vapor, avoiding interference between the two. Moreover, the follower design will not interfere with the normal operation of the sliding extrusion mechanism, ensuring the overall coordination of the device operation.

[0029] Preferably, the steam recovery mechanism includes mounting pipes fixedly mounted on the left and right sides of the fixed box via mounting bases. A gear ring is rotatably mounted in the middle of the mounting pipe. An axial flow fan blade is fixedly mounted on the inner ring of the gear ring. A drive gear is meshed with the top of the gear ring. A drive motor is mounted on the left and right sides of the fixed box via support plates. The shaft end of the drive motor is fixedly connected to the drive gear.

[0030] Preferably, the steam recovery mechanism further includes absorption seats fixedly embedded at the left and right ends of the drying box, a connecting pipe fixedly connected between the absorption seat and the front end of the installation pipe, and a discharge pipe fixedly connected to the rear end of the installation pipe.

[0031] Using the above technical solution, the drive motor drives the drive gear to rotate, and the gear meshing drives the gear ring and axial flow fan blades to rotate synchronously. The negative pressure generated can efficiently collect the steam formed by the evaporation of sludge in the drying box through the absorption seat. After the steam enters the installation pipe through the connecting pipe, it is introduced into the subsequent condensation and recovery system through the discharge pipe. This structure realizes the directional collection and transportation of steam, solves the problem of steam waste in traditional devices, improves the utilization rate of water resources, and ensures the high efficiency of steam recovery by ensuring the stable power transmission of the axial flow fan blades.

[0032] Preferably, the outer ring of the pressure roller is uniformly equipped with extrusion teeth, and a connecting plate is fixedly connected between the connecting seats on both sides. Scraper rods are installed at equal intervals on the bottom surface of the connecting plate, and the gaps between the scraper rods and the extrusion teeth correspond to each other.

[0033] Using the above technical solution, the extrusion teeth on the outer ring of the pressure roller can enhance the puncture and extrusion effect on the sludge, break the flocculent structure inside the sludge, make it easier for water in the sludge to seep out, and the grooves generated by the extrusion teeth during drying can increase the heat contact area and improve the initial water removal efficiency.

[0034] The scraper on the connecting plate is precisely aligned with the gap between the extrusion teeth. During the rotation of the pressure roller, the scraper can promptly clean most of the sludge embedded in the gap between the extrusion teeth, preventing excessive sludge blockage that could affect the extrusion effect.

[0035] Compared with existing technologies, the beneficial effects of this invention are as follows: This sludge property stabilization and control device for biochemical treatment in wastewater treatment plants, through structural optimization of core processes such as sliding extrusion, drying, and steam recovery, not only effectively improves the stability of sludge dewatering, drying, and property control, but also solves the problem of water waste in traditional devices. Simultaneously, it balances ease of operation and energy consumption control, resulting in significant overall benefits. Specific details are as follows:

[0036] 1. The sliding extrusion mechanism achieves dual optimization of the initial sludge dewatering effect and the stability of the device operation through multi-structure collaboration. The servo motor drives the transmission screw to move the transmission seat. Through the cooperation of the sliding block of the limit seat and the trajectory constraint of the guide groove of the limit plate, the pressure roller can move smoothly along a fixed path, effectively avoiding extrusion deviation. The design of the two ends of the guide groove is raised, so that the pressure roller can perform gradient extrusion on the sludge when it moves from both sides to the middle. The buffer structure of the telescopic rod and telescopic spring can alleviate the rigid impact of extrusion, reduce the wear of the device, and at the same time enhance the fit between the pressure roller and the sludge, strengthen the initial dewatering effect, and reduce the burden for subsequent drying.

[0037] The extrusion teeth on the outer ring of the pressure roller can enhance the puncture and extrusion effect, break up sludge flocs to promote water seepage, and the grooves formed can also increase the drying contact area. The scraper on the connecting plate corresponds to the gap of the extrusion teeth, which can clean the sludge in the gap in time and avoid clogging that affects the extrusion effect.

[0038] 2. The disassembly and positioning mechanism can be released from the locking seat by pulling the locking rod through the control panel, which facilitates the quick removal of the limit frame and the internal filter plate. This makes it easy to feed the sludge drying blocks on the filter plate and also makes it easy to clean the residual sludge in the filter plate pores, avoiding blockage that affects the filtration and drying effect. The fitting connection between the sealing plate and the drying box can reduce steam leakage, which improves the drying efficiency and ensures the steam recovery effect.

[0039] 3. The heating tubes at the bottom of the drying chamber are arranged in a serpentine pattern, which greatly increases the contact area with the inside of the chamber, allowing heat to spread evenly and avoiding over-drying or under-drying of local sludge. This effectively ensures the stability of sludge property control. The controller can precisely control the heating temperature and working time of the heating tubes through the connection cable, thereby improving drying efficiency.

[0040] 4. The fixed connection design between the follower belt and the transmission seat and the discharge seat allows the follower belt to move synchronously when the transmission seat moves. The upper and lower follower rollers provide stable support for the follower belt and reduce movement resistance. This effectively prevents heat loss from the drying chamber and prevents external cold air from entering, maintaining a stable high-temperature environment inside the chamber and improving drying efficiency. In addition, the follower belt can isolate the transmission structure from water vapor, avoiding interference between the two. Furthermore, the follower design will not affect the normal operation of the sliding extrusion mechanism, ensuring the overall coordination of the device.

[0041] 5. The steam recovery mechanism drives the drive gear to rotate through the drive motor. The gear meshing drives the gear ring and axial flow fan blades to rotate synchronously. The negative pressure generated can efficiently collect the steam formed by the evaporation of sludge in the drying box through the absorption seat. After the steam enters the installation pipe through the connecting pipe, it is introduced into the subsequent condensation recovery system through the discharge pipe. This realizes the directional collection and transportation of steam, completely solves the problem of steam not being recovered in traditional devices, and significantly improves the water resource utilization rate. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the front side appearance structure of Embodiment 1 of the present invention;

[0043] Figure 2 This is a schematic diagram of the rear side appearance structure of Embodiment 1 of the present invention;

[0044] Figure 3 This is a schematic diagram of the side section structure of the fixed box in Embodiment 1 of the present invention;

[0045] Figure 4 This is a schematic diagram of the distribution structure of the sliding extrusion mechanism and the follow-up heat preservation mechanism in Embodiment 1 of the present invention;

[0046] Figure 5 This is a side view of the sliding extrusion mechanism in Embodiment 1 of the present invention;

[0047] Figure 6 This is a side sectional view of the sliding extrusion mechanism in Embodiment 1 of the present invention;

[0048] Figure 7 This is a side sectional view of the drying oven and the limiting frame in Embodiment 1 of the present invention;

[0049] Figure 8 This is a schematic diagram of the separation structure of the drying oven and the disassembly and positioning mechanism in Embodiment 1 of the present invention;

[0050] Figure 9 This is a schematic diagram of the connection structure between the drying box and the steam recovery mechanism in Embodiment 1 of the present invention;

[0051] Figure 10 This is a side sectional view of the steam recovery mechanism in Embodiment 1 of the present invention;

[0052] Figure 11 This is a side view of the sliding extrusion mechanism in Embodiment 2 of the present invention.

[0053] In the diagram: 1. Fixed box; 2. Drying box; 3. Support base; 4. Transmission screw; 5. Servo motor; 6. Transmission seat; 7. Limiting seat; 8. Slide groove; 9. Slider; 10. Sliding seat; 11. Limiting plate; 12. Guide groove; 13. Telescopic rod; 14. Connecting seat; 15. Telescopic spring; 16. Pressure roller; 17. Positioning seat; 18. Feed pipe; 19. Discharge seat; 20. Limiting frame; 21. Filter plate; 22. Guide groove; 23. Liquid outlet pipe; 24. Collector pipe; 25. Seal 26. Plate; 27. Positioning block; 28. Clamping rod; 29. ​​Control board; 30. Positioning spring; 31. Clamping seat; 32. Heating tube; 33. Controller; 34. Connecting wire; 35. Support frame; 36. Upper follower roller; 37. Lower follower roller; 38. Follower belt; 39. Mounting tube; 40. Gear ring; 41. Axial flow fan blade; 42. Drive gear; 43. Drive motor; 44. Absorption seat; 45. Connecting tube; 46. Discharge tube; 47. Extrusion tooth; 48. Connecting plate; 49. Scraper rod. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] Example 1: Please refer to Figure 1-10This invention provides a technical solution: a device for stabilizing and regulating the properties of sludge from a wastewater treatment plant's biochemical treatment process, comprising a fixed box 1, a drying box 2 fixedly installed at the bottom of the fixed box 1, support seats 3 symmetrically installed on the front and rear sides of the fixed box 1, and a sliding extrusion mechanism installed on the top of the fixed box 1. The sliding extrusion mechanism includes a transmission screw 4 that rotates through the top of the fixed box 1, a servo motor 5 connected to the left end of the transmission screw 4, the servo motor 5 being fixedly connected to the fixed box 1 via a mounting bracket, a transmission seat 6 sleeved on the outer ring of the transmission screw 4, and limit seats 7 fixedly installed on both sides of the transmission seat 6. The left side of the limit seat 7 is fixedly connected to a positioning seat 17, and the end of the limit seat 7 furthest from the transmission seat 6 is internally... A sliding groove 8 is provided, and a slider 9 is slidably installed inside the sliding groove 8. A sliding seat 10 is fixedly installed at one end of the slider 9 near the inner wall of the fixed box 1. A limiting plate 11 is fixedly installed on the inner side of the front and rear top of the fixed box 1. A guide groove 12 is provided inside the limiting plate 11. The guide groove 12 restricts the sliding trajectory of the sliding seat 10. The sliding extrusion mechanism also includes a telescopic rod 13 fixedly installed on the bottom surface of the sliding seat 10. A connecting seat 14 is fixedly installed at the bottom end of the telescopic rod 13. A telescopic spring 15 is sleeved on the outer ring of the telescopic rod 13. The connecting seat 14 forms a telescopic structure with the sliding seat 10 through the telescopic rod 13 and the telescopic spring 15. A pressure roller 16 is rotatably connected to the bottom of the connecting seat 14.

[0056] In the above structure design, the sliding extrusion mechanism is powered by a servo motor 5. Its output shaft drives the transmission screw 4 connected to it to rotate. The transmission seat 6, which is sleeved on the outer ring, moves smoothly along the axial direction of the transmission screw 4 under the action of the threaded engagement. The limiting seats 7 fixed on both sides of the transmission seat 6 move synchronously with the transmission seat 6. The left side of the limiting seat 7 is fixedly connected to the positioning seat 17 to ensure the integrity of the structure. At the same time, the sliding groove 8 opened inside the end of the limiting seat 7 away from the transmission seat 6 forms a sliding engagement with the slider 9. The end of the slider 9 close to the inner wall of the fixed box 1 is fixed with a sliding seat 10, so that the sliding seat 10 can move in conjunction with the movement of the limiting seat 7. The limiting plate 11 fixed on the inner side of the front and rear top of the fixed box 1 has a guide groove 12 inside it to constrain the sliding trajectory of the sliding seat 10, ensuring that the sliding seat 10 always moves along the set path.

[0057] The bottom end of the telescopic rod 13 fixed to the bottom surface of the sliding seat 10 is connected to the connecting seat 14. The telescopic spring 15 sleeved on the outer ring of the telescopic rod 13 provides elastic buffer for the connecting seat 14, so that the connecting seat 14 forms a telescopic structure through the cooperation of the telescopic rod 13 and the telescopic spring 15. The pressure roller 16 rotatably connected to the bottom of the connecting seat 14 moves smoothly under the drive of the sliding seat 10. At the same time, the pressure roller 16 can rotate as it comes into contact with the sludge, and finally completes the directional and stable squeezing action of the sludge.

[0058] A positioning seat 17 is symmetrically installed on the right side of the sliding extrusion mechanism. A feed pipe 18 is fixedly installed inside the positioning seat 17. A discharge seat 19 is fixedly connected to the bottom end of the feed pipe 18. A limit frame 20 is placed inside the drying box 2. A filter plate 21 is fixedly installed inside the limit frame 20. A guide channel 22 is opened at the bottom of the drying box 2. A liquid outlet pipe 23 is installed at the bottom rear end of the guide channel 22. A collection pipe 24 is fixedly connected to the liquid outlet end of the liquid outlet pipe 23. The guide channel 22 is inclined from the front to the inlet of the liquid outlet pipe 23. The liquid outlet pipes 23 are evenly distributed at the bottom rear end of the guide channel 22.

[0059] The above-mentioned structure is designed with a positioning seat 17 symmetrically installed on its right side to cooperate with the sliding extrusion mechanism, providing a stable support for the feeding structure. The feed pipe 18 fixed inside the positioning seat 17 is the channel for sludge transportation. After the biochemical sludge to be treated is introduced through the feed pipe 18, it is guided and diverted through the discharge seat 19 fixedly connected at its bottom end, ensuring that the sludge falls into the drying box 2 at the bottom of the fixed box 1. The limiting frame 20 placed inside the drying box 2 plays a supporting and boundary limiting role for the sludge, preventing the sludge from scattering and shifting during the processing. The filter plate 21 fixed inside the limiting frame 20 undertakes the solid-liquid separation function. The free water in the sludge permeates through the filter plate 21 under the action of gravity and subsequent extrusion and enters the bottom area of ​​the drying box 2.

[0060] The guide channel 22 at the bottom of the drying chamber 2 is designed to be inclined towards the inlet of the liquid outlet pipe 23, so that the separated water can be guided to flow in a directional manner by gravity. The liquid outlet pipes 23, which are evenly distributed at the bottom of the rear end of the guide channel 22, can quickly collect the water flowing there. Finally, the water is collected and discharged into the collector connected to the liquid outlet pipe 24 through the liquid outlet end of the liquid outlet pipe 23, which facilitates the subsequent water resource recycling.

[0061] A disassembly and positioning mechanism is connected between the limiting frame 20 and the drying box 2. The disassembly and positioning mechanism includes a sealing plate 25 fixedly installed on the rear side of the limiting frame 20. The sealing plate 25 is movably fitted to the rear side of the drying box 2. A positioning block 26 is symmetrically installed on the rear side of the sealing plate 25. A locking rod 27 slides through the interior of the positioning block 26. A control plate 28 is fixedly installed at the top of the locking rod 27. A positioning spring 29 is fixedly connected between the control plate 28 and the positioning block 26. The positioning spring 29 is sleeved with the locking rod 27. A locking seat 30 is symmetrically installed on the rear side of the drying box 2. The locking seat 30 is locked to the locking rod 27.

[0062] The core function of the above-mentioned structure design, the disassembly and positioning mechanism between the limiting frame 20 and the drying box 2, is to achieve the stable installation and convenient disassembly of the limiting frame 20 in the drying box 2. Its working process revolves around two states: "positioning and fixing" and "unlocking and separating". When the limiting frame 20 is installed and fixed, the sealing plate 25 fixed to the rear side of the limiting frame 20 forms a movable fitting connection with the rear side of the drying box 2, which not only achieves the initial positioning of the limiting frame 20, but also reduces steam leakage in the drying box 2. The positioning blocks 26 symmetrically installed on the rear side of the sealing plate 25 provide the installation base for the locking structure. The locking rod 27 sliding through the positioning block 26 maintains a downward trend under the elastic action of the positioning spring 29. The positioning spring 29 is sleeved with the locking rod 27 and its two ends are fixed to the control plate 28 and the positioning block 26 respectively, so that the locking rod 27 can be embedded in the locking seat 30 symmetrically installed on the rear side of the drying box 2. Through the locking connection between the locking rod 27 and the locking seat 30, the limiting frame 20 is stably fixed inside the drying box 2.

[0063] When it is necessary to disassemble the limiting frame 20 for cleaning or unloading, pull the control plate 28 fixed at the top of the locking rod 27 upward. The control plate 28 stretches the positioning spring 29 and drives the locking rod 27 to slide upward along the through hole inside the positioning block 26, so that the locking rod 27 is disengaged from the locking relationship with the locking seat 30. At this time, the sealing plate 25 can be pulled to remove the limiting frame 20 from the drying oven 2, and the disassembly operation is completed.

[0064] The bottom of the drying box 2 is equipped with a drying and heating mechanism, which includes a heating tube 31 embedded in the bottom of the drying box 2. The heating tube 31 is distributed in a serpentine structure. The heat generated by the heating tube 31 can dry the sludge inside the limiting frame 20. A controller 32 is fixedly installed on the front side of the drying box 2. A connecting line 33 connects the controller 32 and the heating tube 31.

[0065] The above-mentioned structure design includes a drying and heating mechanism installed at the bottom of the drying chamber 2, which is the core power component for sludge drying. The heating tubes 31 embedded in the bottom of the drying chamber 2 are distributed in a serpentine structure. This structural design can significantly increase the contact area between the heating tubes 31 and the interior of the drying chamber 2, ensuring that heat can be evenly diffused. When the device starts the drying program, the controller 32, which is fixedly installed on the front side of the drying chamber 2, transmits control signals through the connecting line 33 between it and the heating tubes 31, thereby controlling the heating temperature, start / stop, and working time of the heating tubes 31. The heat generated by the heating tubes 31 after being powered on will be transferred upward in the form of heat conduction and heat radiation, directly acting on the sludge in the limiting frame 20 inside the drying chamber 2, causing the residual moisture in the sludge to evaporate by heat, thus completing the key process of sludge drying and property stabilization.

[0066] The drying oven 2 is equipped with a follow-up heat preservation mechanism at both ends. The follow-up heat preservation mechanism includes a support frame 34 symmetrically installed at the left and right ends of the drying oven 2. An upper follow-up roller 35 is rotatably installed on the top of the support frame 34, and a lower follow-up roller 36 is rotatably installed on the bottom of the support frame 34. A follow-up belt 37 is sleeved on the outer ring of the upper follow-up roller 35 and the lower follow-up roller 36. The follow-up belt 37 is slidably connected to the fixed box 1. The follow-up belt 37 is fixedly connected to the bottom end of the transmission seat 6 and the outer ring of the discharge seat 19. The connecting seat 14 is slidably connected to the follow-up belt 37.

[0067] The above structure design uses support frames 34, which are symmetrically installed at the left and right ends of the drying oven 2, to provide stable support for the core components. The upper follower roller 35, which is rotatably installed at the top of the support frame 34, and the lower follower roller 36, which is rotatably installed at the bottom, form an upper and lower support structure. The follower belt 37, which is sleeved on the outer ring of the two, can move smoothly by relying on the rotation of the upper follower roller 35 and the lower follower roller 36, effectively reducing the motion resistance.

[0068] The follower belt 37 and the fixed box 1 are connected by a through sliding connection, which ensures its own movement space. At the same time, the follower belt 37 is fixedly connected to the bottom end of the transmission seat 6 and the outer ring of the discharge seat 19. When the sliding extrusion mechanism is working, the axial movement of the transmission seat 6 will directly drive the follower belt 37 to move synchronously, thus achieving the follower effect. The through sliding connection design between the connecting seat 14 and the follower belt 37 ensures that the up and down buffering and movement of the connecting seat 14 and the pressure roller 16 will not interfere with the follower belt 37. During the follower process, the follower belt 37 forms a shield for the opening area at the top of the drying box 2, which not only prevents the internal heat from dissipating outwards, but also prevents external cold air from entering, maintaining a stable high-temperature environment inside the drying box 2. At the same time, it isolates the transmission structure from water vapor, ensuring the overall coordination of the device operation.

[0069] Steam recovery mechanisms are installed at both ends of the fixed box 1. The steam recovery mechanism includes mounting pipes 38 fixedly installed on the left and right sides of the fixed box 1 via mounting bases. A gear ring 39 is rotatably installed in the middle of the mounting pipe 38. An axial flow fan blade 40 is fixedly installed on the inner ring of the gear ring 39. A drive gear 41 is meshed with the top of the gear ring 39. A drive motor 42 is installed on the left and right sides of the fixed box 1 via support plates. The shaft end of the drive motor 42 is fixedly connected to the drive gear 41. The steam recovery mechanism also includes absorption seats 43 fixedly embedded in the left and right ends of the drying box 2. A connecting pipe 44 is fixedly connected between the absorption seat 43 and the front end of the mounting pipe 38. A discharge pipe 45 is fixedly connected to the rear end of the mounting pipe 38.

[0070] The above-described structure provides a channel for steam delivery through the mounting pipes 38 fixed to the left and right sides of the fixed box 1. The inner ring of the toothed ring 39, which is rotatably mounted in the middle of the mounting pipe 38, is fixed with an axial flow fan blade 40. The top of the toothed ring 39 is meshed with the drive gear 41, which is fixedly connected to the shaft end of the drive motor 42, which is mounted on the left and right sides of the fixed box 1 through the support plate, forming a complete power transmission link. When steam recovery is started, the output shaft of the drive motor 42 drives the drive gear 41 to rotate. Through the meshing of the gears, the toothed ring 39 is driven to rotate synchronously, which in turn drives the axial flow fan blade 40 in the inner ring of the toothed ring 39 to rotate at high speed, generating a directional negative pressure. Under the action of negative pressure, the absorption seats 43, which are fixedly embedded at the left and right ends of the drying box 2, efficiently capture the steam in the drying box 2. This steam enters the interior of the mounting pipe 38 through the connecting pipe 44, which is fixedly connected between the absorption seat 43 and the front end of the mounting pipe 38, and is finally introduced into the external condensation recovery system through the discharge pipe 45, which is fixedly connected to the rear end of the mounting pipe 38, thus completing the steam collection and recovery process and effectively avoiding water waste.

[0071] Example 2: Based on Example 1, the present invention adopts the following... Figure 11 The technical solution shown further discloses that the outer ring of the pressure roller 16 is uniformly equipped with extrusion teeth 46, and a connecting plate 47 is fixedly connected between the two connecting seats 14. Scraper rods 48 are installed at equal intervals on the bottom surface of the connecting plate 47, and the gap between the scraper rods 48 and the extrusion teeth 46 corresponds to each other.

[0072] The design of the above structure, in Embodiment 2, is based on the sliding extrusion mechanism of Embodiment 1. By optimizing the pressure roller 16 and its supporting structure, the sludge extrusion and dewatering effect and the stability of the mechanism operation are further improved. When the sliding extrusion mechanism drives the pressure roller 16 to move and rotate along the set trajectory to extrude sludge, the extrusion teeth 46 evenly installed on the outer ring of the pressure roller 16 become the core component for strengthening the extrusion effect. Its sharp structure can penetrate deep into the sludge, effectively breaking the dense structure of the sludge flocs, making it easier for the water trapped in the sludge to break through the constraints and seep out. At the same time, the extrusion teeth 46 The fine grooves formed by squeezing the sludge surface can significantly increase the contact area between the sludge and heat in the subsequent drying process, laying the foundation for improving drying efficiency. The connecting plate 47, which is fixedly connected to the connecting seats 14 on both sides, moves synchronously with the connecting seats 14 and the pressure roller 16. The gaps between the scraper rods 48, which are installed at equal intervals on the bottom surface of the connecting plate 47, and the extrusion teeth 46 are corresponding. During the continuous rotation and squeezing process of the pressure roller 16, the scraper rods 48 can scrape and clean the residual sludge embedded in the corresponding gaps of the extrusion teeth 46 in real time, avoiding the large accumulation and blockage of sludge in the gaps.

[0073] Example 3: Based on Examples 1 and 2, this example focuses on the recycling of water resources and heat energy. By adding a waste heat recovery and conveying system, the hot water after sludge compression and separation is converted into preheating energy, further improving the energy efficiency and processing efficiency of the device. The new structure includes: a preheating pipe wound around the outer ring of the feed pipe 18 and a conveying pipe connecting the manifold 24 and the preheating pipe, as well as a circulation pump installed in the middle of the conveying pipe. The preheating pipe is made of a metal material with excellent thermal conductivity and is tightly wound in a spiral shape around the outer wall of the feed pipe 18 to ensure heat exchange efficiency. The outlet of the preheating pipe is located outside the fixed box 1 to facilitate centralized treatment of the water after heat exchange.

[0074] The above-described structure design allows the sludge moisture, after being squeezed by the sliding extrusion mechanism and filtered by the filter plate 21, to be collected in the outlet pipe 23 via the guide channel 22 and finally discharged through the collection pipe 24. At this time, the discharged moisture is heated to a certain temperature by the drying and heating mechanism inside the subsequent drying chamber 2. After the circulation pump is started, the hot water discharged from the collection pipe 24 is directed to the preheating pipe wrapped around the outer ring of the feed pipe 18 under the action of power, forming a hot water passage. Since the preheating pipe is tightly attached to the outer wall of the feed pipe 18, the heat of the hot water is transferred to the inside of the feed pipe 18 through heat conduction, which uniformly preheats the sludge to be treated in the feed pipe 18. When the preheated sludge enters the subsequent extrusion and drying process, the activity of its internal moisture is increased, making it easier to seep out under the extrusion action. At the same time, it can shorten the heat absorption time of the drying process and reduce the energy consumption of the drying and heating mechanism.

[0075] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0076] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for stabilizing and regulating the properties of sludge from a wastewater treatment plant, comprising a fixed box (1), wherein a drying box (2) is fixedly installed at the bottom of the fixed box (1), and support seats (3) are symmetrically installed on the front and rear sides of the fixed box (1), characterized in that: A sliding compression mechanism is installed on the top of the fixed box (1); A positioning seat (17) is symmetrically installed on the right side of the sliding extrusion mechanism. A feed pipe (18) is fixedly installed inside the positioning seat (17). A discharge seat (19) is fixedly connected to the bottom end of the feed pipe (18). The drying box (2) has a limiting frame (20) inside, and a filter plate (21) is fixedly installed inside the limiting frame (20). The bottom of the drying box (2) has a guide groove (22), and a liquid outlet pipe (23) is installed at the bottom rear end of the guide groove (22). The liquid outlet end of the liquid outlet pipe (23) is fixedly connected to a collection pipe (24). The bottom of the drying box (2) is equipped with a drying heating mechanism; A disassembly and positioning mechanism is connected between the limiting frame (20) and the drying box (2); The drying box (2) is equipped with a follow-up heat preservation mechanism at both ends; Steam recovery mechanisms are installed at both ends of the fixed box (1).

2. The sludge property stabilization and control device for biochemical treatment in wastewater treatment plants according to claim 1, characterized in that: The sliding extrusion mechanism includes a transmission screw (4) that rotates through the top of the fixed box (1). A servo motor (5) is connected to the left end of the transmission screw (4). The servo motor (5) is fixedly connected to the fixed box (1) through a mounting bracket. A transmission seat (6) is fitted around the outer ring of the transmission screw (4). Limit seats (7) are fixedly installed on both sides of the transmission seat (6). The left side of the limit seat (7) is fixedly connected to the positioning seat (17). A sliding groove (8) is opened inside the end of the limit seat (7) away from the transmission seat (6). A slider (9) is slidably installed inside the sliding groove (8). A sliding seat (10) is fixedly installed at the end of the slider (9) near the inner wall of the fixed box (1). A limiting plate (11) is fixedly installed on the inner side of the front and rear top of the fixed box (1). A guide groove (12) is opened inside the limiting plate (11). The guide groove (12) restricts the sliding trajectory of the sliding seat (10).

3. The sludge property stabilization and control device for biochemical treatment in a wastewater treatment plant according to claim 2, characterized in that: The sliding extrusion mechanism also includes a telescopic rod (13) fixedly installed on the bottom surface of the sliding seat (10). A connecting seat (14) is fixedly installed at the bottom end of the telescopic rod (13). A telescopic spring (15) is sleeved on the outer ring of the telescopic rod (13). The connecting seat (14) forms a telescopic structure with the sliding seat (10) through the telescopic rod (13) and the telescopic spring (15). A pressure roller (16) is rotatably connected to the bottom of the connecting seat (14).

4. The sludge property stabilization and control device for biochemical treatment in a wastewater treatment plant according to claim 1, characterized in that: The guide channel (22) is inclined from the front to the inlet of the liquid outlet pipe (23), and the liquid outlet pipe (23) is evenly distributed at the bottom of the rear end of the guide channel (22).

5. The sludge property stabilization and control device for biochemical treatment in a wastewater treatment plant according to claim 1, characterized in that: The disassembly and positioning mechanism includes a sealing plate (25) fixedly installed on the rear side of the limiting frame (20). The sealing plate (25) is movably fitted and connected to the rear side of the drying box (2). A positioning block (26) is symmetrically installed on the rear side of the sealing plate (25). A locking rod (27) slides through the interior of the positioning block (26). A control plate (28) is fixedly installed at the top of the locking rod (27). A positioning spring (29) is fixedly connected between the control plate (28) and the positioning block (26). The positioning spring (29) is sleeved with the locking rod (27). A locking seat (30) is symmetrically installed on the rear side of the drying box (2). The locking seat (30) is engaged with the locking rod (27).

6. The sludge property stabilization and control device for biochemical treatment in a wastewater treatment plant according to claim 1, characterized in that: The drying and heating mechanism includes a heating tube (31) embedded in the bottom of the drying box (2). The heating tube (31) is distributed in a serpentine structure. The heat generated by the heating tube (31) can dry the sludge inside the limiting frame (20). A controller (32) is fixedly installed on the front side of the drying box (2). A connecting line (33) connects the controller (32) and the heating tube (31).

7. The sludge property stabilization and control device for biochemical treatment in a wastewater treatment plant according to claim 3, characterized in that: The follow-up heat preservation mechanism includes support frames (34) symmetrically installed at the left and right ends of the drying box (2). An upper follow-up roller (35) is rotatably installed on the top of the support frame (34), and a lower follow-up roller (36) is rotatably installed on the bottom of the support frame (34). A follow-up belt (37) is sleeved on the outer ring of the upper follow-up roller (35) and the lower follow-up roller (36). The follow-up belt (37) is slidably connected to the fixed box (1). The follow-up belt (37) is fixedly connected to the bottom end of the transmission seat (6) and the outer ring of the discharge seat (19). The connecting seat (14) is slidably connected to the follow-up belt (37).

8. The sludge property stabilization and control device for biochemical treatment in a wastewater treatment plant according to claim 1, characterized in that: The steam recovery mechanism includes mounting pipes (38) fixedly mounted on the left and right sides of the fixed box (1) via mounting bases. A gear ring (39) is rotatably mounted in the middle of the mounting pipe (38). An axial flow fan blade (40) is fixedly mounted on the inner ring of the gear ring (39). A drive gear (41) is meshed with the top of the gear ring (39). A drive motor (42) is mounted on the left and right sides of the fixed box (1) via support plates. The shaft end of the drive motor (42) is fixedly connected to the drive gear (41).

9. The sludge property stabilization and control device for biochemical treatment in a wastewater treatment plant according to claim 8, characterized in that: The steam recovery mechanism also includes absorption seats (43) fixedly embedded at the left and right ends of the drying box (2). A connecting pipe (44) is fixedly connected between the absorption seat (43) and the front end of the mounting pipe (38). A discharge pipe (45) is fixedly connected to the rear end of the mounting pipe (38).

10. The sludge property stabilization and control device for biochemical treatment in a wastewater treatment plant according to claim 3, characterized in that: The outer ring of the pressure roller (16) is uniformly equipped with extrusion teeth (46), and a connecting plate (47) is fixedly connected between the connecting seats (14) on both sides. Scraper rods (48) are installed at equal intervals on the bottom surface of the connecting plate (47), and the gap between the scraper rods (48) and the extrusion teeth (46) corresponds to each other.

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