Sludge discharge method and system with sludge compression function for sewage treatment

Abstract

The invention relates to the technical field of sewage treatment equipment, in particular to a sludge discharge method and system with a sludge compression function for sewage treatment. Comprising a rack; the compression bin is horizontally and fixedly arranged on the rack; the pressure separation module is fixedly arranged at the bottom of the compression bin in a horizontal state, and the pressure separation module is provided with a separation unit capable of performing solid-liquid separation on the sludge in the compression bin; the leading-out module is detachably arranged on the left side of the compression bin and is close to the top of the compression bin; the extrusion module is fixedly arranged on the right side of the compression bin in a horizontal state relative to the guide-out module and is arranged close to the top of the compression bin; the slitting module is arranged at the top of the compression bin, and the slitting module is used for slitting the formed solid mud; according to the sludge solid-liquid separation device, efficient solid-liquid separation can be conducted on sludge, and the solid sludge can be cut into different sizes according to transportation requirements.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, specifically to a sludge discharge method and system for wastewater treatment with sludge compression function. Background Technology

[0002] In wastewater treatment, sludge is a major byproduct, produced in large quantities with high water content. If not effectively treated and disposed of, it will seriously affect the operational efficiency of the wastewater treatment system and environmental safety. Current sludge treatment methods typically rely on equipment such as filter presses, centrifugal dewatering machines, or screw presses to compress and dewater the sludge to reduce its volume and water content. However, existing technologies still have the following problems: First, while traditional sludge compression equipment can reduce sludge volume, it primarily focuses on dewatering and fails to further segment or quantitatively process the compressed sludge. This results in large, irregularly shaped sludge lumps that are difficult to standardize. Such sludge suffers from low loading rates and poor transportation efficiency during subsequent transport and storage, and large sludge lumps are prone to causing blockages in pipelines or at equipment outlets. Second, existing sludge compression systems generally lack a structural design that coordinates compression and segmentation. When the compressed sludge forms a monolithic block due to its agglomerative properties, manual or secondary equipment is often required for crushing and cutting, increasing processing costs, prolonging the process, and reducing overall operational efficiency.

[0003] Due to the complex sources of sludge and the significant differences in its composition and moisture content, traditional compression equipment struggles to dynamically adjust the compression pressure and discharge size according to the characteristics of different sludge, lacking adaptive intelligent control capabilities. This results in problems such as uneven feeding, low thermal efficiency, and unstable reactions in subsequent incineration, drying, or fermentation processes after compression. Summary of the Invention

[0004] To address the aforementioned issues, a sludge discharge system for wastewater treatment with sludge compression function is provided. This system not only efficiently dewaters sludge but also effectively cuts and regulates sludge of different volumes, thus solving the problem that existing sludge compression equipment mostly only has a single compression and dewatering function and lacks the ability to cut and quantitatively process sludge of different volumes.

[0005] To address the problems of existing technologies, this invention provides a wastewater treatment system with sludge compression function, comprising: a frame; a compression chamber, horizontally fixedly mounted on the frame; a compression separation module, horizontally fixedly mounted at the bottom of the compression chamber, the compression separation module having a separation unit capable of solid-liquid separation of the sludge in the compression chamber; an outlet module, detachably mounted on the left side of the compression chamber and near the top of the compression chamber; a compression module, horizontally fixedly mounted relative to the outlet module on the right side of the compression chamber and near the top of the compression chamber, the compression module being used to compress and shape solid sludge for export from the outlet end of the outlet module; and a cutting module, mounted on the top of the compression chamber, the cutting module being used to cut the shaped solid sludge.

[0006] Preferably, the separation unit is equipped with a separation frame and multiple sets of filter elements that can be detachably installed on the separation frame to separate mud and water.

[0007] Preferably, the compression module further includes a drive unit capable of driving the separation unit to slide longitudinally within the compression chamber; the drive unit includes a lifting frame capable of sliding longitudinally within the compression chamber; the separation unit is fixedly mounted horizontally on the lifting frame.

[0008] Preferably, the export module is provided with a guide seat and a limiting seat that can export sludge in a preset shape; the guide seat is fixedly disposed on the left side of the compression chamber through the limiting seat; the guide seat is slidably inserted into the limiting seat.

[0009] Preferably, the extrusion module includes a guide chamber, an extrusion plate, a guide rod, a fixing frame, and a first electric push rod; the guide chamber is vertically fixedly disposed above the right side of the compression chamber and communicates with the compression chamber; the first electric push rod is vertically fixedly disposed outside the guide chamber through the fixing frame; the extrusion plate is horizontally slidably disposed inside the guide chamber and has a guide rod vertically disposed on its surface, the rod portion of the guide rod passing through the fixing frame and slidingly engaging with the fixing frame.

[0010] Preferably, the slitting module includes a mounting frame, a sealing top plate, and a transverse slitting unit and a longitudinal slitting unit that can pass longitudinally through the sealing top plate into the compression chamber; the sealing top plate is sealed and fastened to the top of the compression chamber; the transverse slitting unit and the longitudinal slitting unit are arranged vertically and alternately on the sealing top plate through the mounting frame.

[0011] Preferably, the cutting module is further provided with a second linear actuator capable of vertically driving the sealing top plate longitudinally away from the compression chamber.

[0012] Preferably, the transverse slitting unit is provided with a slitting plate and a second electric push rod capable of driving the slitting plate to rise longitudinally; the second electric push rod is fixedly mounted vertically on the mounting frame and its output shaft passes through the mounting frame and is positioned towards the sealing top plate; the slitting plate is fixedly mounted vertically on the drive end of the second electric push rod.

[0013] A wastewater treatment sludge discharge method with sludge compression function, using a wastewater treatment system with sludge compression function, includes the following steps: S1: The high-moisture sludge after preliminary sedimentation and solid-liquid separation is introduced into the compression chamber and sealed by the top plate; an external power source is connected to drive the extrusion module to operate, and the extrusion module gradually pushes the sludge from bottom to top, so that it is continuously compacted in the compression chamber; the free water and some capillary water in the sludge are filtered by the extrusion module under the extrusion pressure to achieve solid-liquid separation. S2: Under continuous extrusion pressure, sludge is gradually accumulated to the top of the compression chamber and forms solid sludge blocks. At this time, the sealing top plate and the compression chamber wall together form a closed shaping cavity to ensure that the sludge is gradually formed during the compression process. When the sludge needs to be cut and exported, after the solid sludge is compacted to the preset density, the transverse cutting unit and the longitudinal cutting unit are driven to move. The cutting blade extends into the compression chamber through the through hole on the sealing top plate and cuts the solid sludge longitudinally and transversely along the preset trajectory to obtain solid sludge blocks of uniform size. S3: After the cutting is completed, the second linear drive is started to move the sealing top plate up, releasing the top of the compression chamber and providing an outlet for sludge discharge; S4: When it is necessary to squeeze and export sludge, the cutting module remains stationary, while the extrusion module is driven to move. The extrusion plate pushes the cut solid sludge blocks sequentially to the export module along the guide mechanism. Finally, through the guide seat and limiting structure of the export module, the solid sludge blocks are exported to the outside of the compression chamber in a preset shape, thus achieving automatic sludge discharge.

[0014] The advantages of this invention compared to the prior art are: 1. By setting up an extrusion module and a compression module in the compression chamber, the present invention can compact, dewater, and export solid sludge in a predetermined shape layer by layer in a limited space. This not only significantly reduces the water content of the sludge and improves the solid-liquid separation efficiency, but also reduces the energy consumption cost of subsequent sludge treatment and transportation.

[0015] 2. Through the coordinated operation of the transverse and longitudinal cutting units, the present invention can cut solid sludge into sludge blocks of different specifications according to actual needs, which not only improves the utilization rate of sludge, but also facilitates subsequent transportation, stacking and resource utilization. Attached Figure Description

[0016] Figure 1A three-dimensional sludge discharge system for wastewater treatment with sludge compression function. Figure 1 .

[0017] Figure 2 This is a side view of a sludge discharge system for wastewater treatment with sludge compression function.

[0018] Figure 3 yes Figure 2 Sectional view at point AA.

[0019] Figure 4 This is a top view of a sludge discharge system for wastewater treatment with sludge compression function.

[0020] Figure 5 yes Figure 4 A three-dimensional sectional view of the section at point BB.

[0021] Figure 6 yes Figure 5 A magnified view of a portion of point C.

[0022] Figure 7 A partial structural breakdown of the cutting module in a sludge removal system for wastewater treatment with sludge compression function. Figure 1 .

[0023] Figure 8 A three-dimensional sludge discharge system for wastewater treatment with sludge compression function. Figure 2 .

[0024] Figure 9 It is a sludge discharge system for sewage treatment with sludge compression function.

[0025] Figure 10 A partial structural breakdown of the cutting module in a sludge removal system for wastewater treatment with sludge compression function. Figure 2 .

[0026] The numbers on the map are: 1. Rack; 2. Compression chamber; 3. Compression and separation module; 31. Separation unit; 311. Separation frame; 3111. Groove; 3112. Filter hole; 312. Filter element; 32. Drive unit; 321. Lifting frame; 322. First linear actuator; 4. Export module; 41. Guide seat; 411. Insert plate; 412. Export hole; 42. Limit seat; 5. Extrusion module; 51. Guide chamber; 52. Extrusion plate; 53. Guide rod; 54. Fixing frame; 55. First electric push rod; 6. Slitting module; 61. Mounting bracket; 62. Sealed top plate; 63. Horizontal slitting unit; 631. Slitting plate; 632. Second electric push rod; 64. Longitudinal slitting unit; 65. Second linear actuator; 66. Support frame. Detailed Implementation

[0027] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0028] See Figures 1 to 10 The following is an illustration of a wastewater treatment system with sludge compression function: a frame 1; a compression chamber 2, horizontally fixed on the frame 1; a compression separation module 3, horizontally fixed at the bottom of the compression chamber 2, the compression separation module 3 having a separation unit 31 capable of solid-liquid separation of the sludge in the compression chamber 2; an outlet module 4, detachably disposed on the left side of the compression chamber 2 and near the top of the compression chamber 2; a compression module 5, horizontally fixed relative to the outlet module 4 on the right side of the compression chamber 2 and near the top of the compression chamber 2, the compression module 5 being used to compress and shape solid sludge for export from the outlet end of the outlet module 4; and a cutting module 6 disposed on the top of the compression chamber 2, the cutting module 6 being used to cut the shaped solid sludge.

[0029] When solid-liquid separation of sludge is required, the high-moisture sludge, after preliminary separation, is first introduced into the compression chamber 2 for centralized processing. After connecting an external power source and activating the compression module 3, the module applies continuous pressure from bottom to top to the sludge in the compression chamber 2, gradually compacting and accumulating the sludge to the top of the chamber. As the pressure increases, the free water and some capillary water entrained in the sludge are forced to precipitate out during the compression process and discharged through the filtration channel on the compression module 3, thereby achieving effective separation and volume reduction of sludge and water.

[0030] After the sludge gradually solidifies, staff can choose different discharge methods according to processing needs. When it is necessary to expel the compressed solid sludge in strip form, an external power source can be connected again to drive the compression module 5 to operate, further pushing the solid sludge at the top of the compression chamber 2. Through the limiting and guiding action of the discharge module 4, the solid sludge is pushed out of the compression chamber 2 in a stable form. If it is necessary to quantitatively cut and discharge the solid sludge, the cutting module 6 can be driven to work. Its cutting end is inserted longitudinally into the compression chamber 2, and the compressed solid sludge is cut according to the preset cutting size and shape requirements to ensure that the discharged sludge blocks are uniform in volume and regular in shape, which is convenient for subsequent transportation, stacking and disposal.

[0031] By integrating an extrusion module 5, a separation module 3, an export module 4, and a cutting module 6 within the compression chamber 2, an integrated processing flow for sludge compression, dewatering, quantitative export, and cutting is achieved. This not only significantly improves the efficiency of sludge solid-liquid separation and reduces sludge volume and moisture content, but also allows for flexible selection of either overall export or split export methods according to needs. This enhances the convenience and adaptability of sludge transportation and disposal, avoiding the blockage and transportation difficulties caused by traditional large-volume sludge.

[0032] See Figure 7 and Figure 10 As shown: The separation unit 31 is provided with a separation frame 311 and multiple sets of filter elements 312 that are detachably mounted on the separation frame 311 and can filter mud and water.

[0033] The separation frame 311 is specifically an integral frame structure that fits the geometry of the inner cavity of the compression chamber 2. Its surface has a number of grooves 3111 regularly opened for placing the filter element 312. Each groove 3111 is provided with a water filter hole 3112 that extends to the bottom of the separation frame 311, thereby ensuring that the filter element 312 can be stably positioned and form a multi-point filtration channel after installation.

[0034] In operation, when further mud-water separation of the sludge in the compression chamber 2 is required using the separation unit 31, the drive unit 32 starts and drives the separation unit 31 to rise longitudinally from bottom to top along the inner cavity of the compression chamber 2. During this process, the separation frame 311 gradually pushes the sludge upward under the lifting drive, causing the sludge to be compacted under the combined squeezing action of the filter element 312 and the wall of the groove 3111. At the same time, the free water and some bound water inside the sludge are quickly separated under the action of external squeezing and the pores of the filter element 312, and discharged through the water filter holes 3112 at the bottom of the groove 3111 to the collection channel outside the compression chamber 2, thereby achieving a continuous and stable mud-water separation effect.

[0035] The separation frame 311, through its precisely fitted frame design with the inner cavity of the compression chamber 2 and its combination structure of multiple filter elements 312 and water filtration holes 3112, can effectively compact and dewater the sludge during the lifting and pushing process. This structure not only enhances the filtration area and the number of drainage channels, thereby improving the sludge-water separation efficiency, but also ensures the stable operation of the separation process, preventing the filter elements 312 from becoming clogged due to sludge accumulation. At the same time, under the dual action of pushing and filtering, the separation frame 311 compresses the sludge layer by layer and gradually drains the water, ultimately obtaining solid sludge blocks with lower water content and smaller volume.

[0036] See Figure 3 and Figure 5As shown: The compression module 3 is also provided with a drive unit 32 that can drive the separation unit 31 to slide longitudinally within the compression chamber 2; the drive unit 32 is provided with a lifting frame 321 that can slide longitudinally within the compression chamber 2; the separation unit 31 is fixedly mounted on the lifting frame 321 in a horizontal state.

[0037] The drive unit 32 further includes a first linear actuator 322 capable of driving the lifting frame 321 to slide. The first linear actuator 322 is vertically fixed at the bottom of the compression chamber 2 and its output shaft is fixedly connected to the lifting frame 321.

[0038] In the non-compression state, the separation unit 31 is horizontally positioned near the bottom of the compression chamber 2 under the drive of the drive unit 32. When sludge needs to be separated into mud and liquid, after the sludge is placed in the compression chamber 2, an external power supply is first connected to drive the first linear actuator 322 to operate. The output shaft of the first linear actuator 322 extends to drive the lifting frame 321 to rise longitudinally, thereby synchronously driving the separation unit 31 to slide longitudinally within the compression chamber 2. This allows the separation unit 31 to separate the mud and water in the sludge, and the solid sludge after dewatering and separation by the separation unit 31 is placed at the top of the compression chamber 2. When it is necessary to extrude the solid sludge in strips by cooperating with the export module 4 and the extrusion module 5, the lifting frame 321 will descend to the same height as the extrusion module 5 under the drive of the first linear actuator 322, thereby achieving the effect of extruding the solid sludge in cooperation with the extrusion module 5.

[0039] See Figure 7 and Figure 10 As shown: The export module 4 is provided with a guide seat 41 and a limiting seat 42 that can export sludge in a preset shape; the guide seat 41 is fixedly disposed on the left side of the compression chamber 2 through the limiting seat 42; the guide seat 41 is slidably inserted into the limiting seat 42.

[0040] The guide seat 41 specifically consists of an insert plate 411 and a through-hole 412 formed in the insert plate 411, used to shape and discharge solid sludge during the extrusion process. In conjunction with the extrusion module, it ensures that the compacted sludge is stably discharged in a preset shape and size. Furthermore, to meet the processing needs under different working conditions, when it is necessary to extrude solid sludge into different shapes or specifications, the operator only needs to replace the guide seat 41 with the corresponding shape of the through-hole 412 to achieve diversified sludge block output without making significant modifications to the overall device, significantly improving applicability and flexibility.

[0041] In practical operation, when it is necessary to export the sludge compacted by the compression module 3 from the compression chamber 2 in a preset form, an external power supply is first connected to drive the extrusion module 5. Under the drive, the extrusion module 5 gradually pushes the solid sludge inside the compression chamber 2 along the export direction, ultimately causing the sludge to be smoothly discharged through the export hole 412 of the guide seat 41, forming a regular solid sludge block during the export process. To avoid leakage during the compression and dewatering operation of the compression module 3, a sealing plate 411 is always inserted in the limiting seat 42 before the extrusion process is started, so as to effectively block the export hole 412 and ensure that the sludge will not leak from the export seat during the compression stage, thereby improving the stability and sealing reliability of the system operation.

[0042] The modular design of the guide seat 41 not only enables stable and controllable extrusion molding of solid sludge, but also allows for flexible replacement of different shaped outlet holes 412 according to actual needs, thus achieving the output of sludge blocks of various specifications and forms. This avoids the limitation of single-specification output in traditional devices, and at the same time, the use of the sealing insert plate 411 solves the potential problem of sludge leakage during the compression process.

[0043] See Figure 10 As shown: The extrusion module includes a guide chamber 51, an extrusion plate 52, a guide rod 53, a fixing frame 54, and a first electric push rod 55; the guide chamber 51 is vertically fixedly disposed above the right side of the compression chamber 2 and communicates with the compression chamber 2; the first electric push rod 55 is vertically fixedly disposed outside the guide chamber 51 through the fixing frame 54; the extrusion plate 52 is horizontally slidably disposed inside the guide chamber 51 and the surface is vertically disposed with the guide rod 53, the rod portion of the guide rod 53 passes through the fixing frame 54 and is slidably engaged with the fixing frame 54.

[0044] When the compressed and solidified sludge blocks need to be directionally extruded toward the discharge module 4, an external power supply is first connected to drive the first electric push rod 55 to start working. During the controlled extension process, the output shaft of the first electric push rod 55 synchronously drives the extrusion plate 52 forward along a preset stroke. During this process, the extrusion plate 52 maintains stable linear motion under the precise guidance of the guide chamber 51, avoiding deviation or shaking, and gradually enters the compression chamber 2. As the extrusion plate 52 continues to advance, its front end face forms an effective sealed extrusion chamber with the cavity wall of the compression chamber 2, applying uniform and continuous pressure to the solid sludge located at the top of the compression chamber 2. Finally, the solid sludge is pushed to the discharge module 4 under pressure, and through the limiting and forming structure of the discharge module 4, it is discharged to the outside of the compression chamber 2 in a preset shape and volume, thereby achieving quantitative forming and discharge of the solid sludge.

[0045] See Figure 6 and Figure 9As shown: The slitting module 6 is provided with a mounting frame 61, a sealing top plate 62, and a transverse slitting unit 63 and a longitudinal slitting unit 64 that can pass through the sealing top plate 62 and enter the compression chamber 2 longitudinally; the sealing top plate 62 is sealed and fastened to the top of the compression chamber 2; the transverse slitting unit 63 and the longitudinal slitting unit 64 are arranged in a vertical state and are crisscrossed on the sealing top plate 62 through the mounting frame 61.

[0046] The horizontal slicing unit 63 and the vertical slicing unit 64 have the same structure, and the horizontal slicing unit 63 is positioned lower than the vertical slicing unit 64.

[0047] The sealing top plate 62 is specifically an integral sealing component adapted to the shape of the top cavity of the compression chamber 2, used to tightly seal the top of the compression chamber 2 in the non-slitting state, preventing sludge from overflowing from the top during compression or extrusion. Multiple sets of through holes are regularly formed on the sealing top plate 62, each corresponding to the cutting end of the transverse cutting unit 63 and the longitudinal cutting unit 64, so that the cutting end can accurately pass through the sealing top plate 62 into the compression chamber 2 during the cutting process to cut the solid sludge.

[0048] In the non-working state, the sealing top plate 62 is horizontally and securely fastened to the top of the compression chamber 2, forming an integrated sealed cavity structure. At the same time, the cutting ends of the transverse cutting unit 63 and the longitudinal cutting unit 64 always pass through the through hole and remain flush with the lower surface of the sealing top plate 62 when stationary, and will not extend into the interior of the compression chamber 2, so as to avoid premature disturbance of the sludge and damage to the sealing performance of the top plate.

[0049] When it is necessary to cut the solid sludge after it has been extruded and shaped by the compression module 3, an external power supply is connected to synchronously drive the transverse cutting unit 63 and the longitudinal cutting unit 64. Under the driving action, each cutting end extends into the compression chamber 2 along the preset cutting path and cuts the solid sludge blocks in the longitudinal and transverse directions according to the set cutting trajectory, thereby quickly and efficiently cutting them into regular sludge blocks of uniform size to meet the needs of transportation and subsequent disposal.

[0050] By integrating slitting holes and horizontal and vertical slitting units on the sealed top plate 62, not only is the sealing and safety of the compression chamber 2 ensured when not in operation, but multi-directional cutting of solid sludge can also be quickly achieved when needed. This effectively improves the slitting efficiency and precision after sludge block formation, avoiding problems such as high labor intensity, uneven cutting, and safety hazards caused by manual cutting.

[0051] See Figure 8 As shown: The cutting module 6 is also provided with a second linear actuator 65 that can vertically drive the sealing top plate 62 longitudinally away from the compression chamber 2.

[0052] Two second linear actuators 65 are provided, and the two second linear actuators 65 are vertically mounted on the top of the sealing top plate 62 in a symmetrical arrangement via support frames 66. The output end of each second linear actuator 65 passes through the support frame 66 and is firmly connected to the fixed connection points at both ends of the sealing top plate 62.

[0053] In operation, after the solid sludge in the compression chamber 2 is cut into regular sludge blocks by the transverse cutting unit 63 and the longitudinal cutting unit 64, if it is necessary to export the cut sludge blocks to the outside of the chamber, simply connect an external power supply to drive the second linear actuator 65 to start working. At this time, the two second linear actuators 65 operate synchronously, driving the sealing top plate 62 to rise evenly in the vertical direction, thereby opening the top of the compression chamber 2. Subsequently, under the pushing action of the compression module 3, the cut solid sludge blocks are pushed out of the compression chamber 2 in sequence, successfully completing the automatic discharge process.

[0054] See Figure 9 As shown: The transverse slitting unit 63 is provided with a slitting plate 631 and a second electric push rod 632 that can drive the slitting plate 631 to rise longitudinally; the second electric push rod 632 is fixedly mounted on the mounting frame 61 in a vertical state and its output shaft passes through the mounting frame 61 and is positioned towards the sealing top plate 62; the slitting plate 631 is fixedly mounted on the driving end of the second electric push rod 632 in a vertical state.

[0055] Multiple sets of transverse cutting units 63 are arranged equidistantly along the long side of the sealing top plate 62, with a consistent spacing between each set of cutting units. This allows for transverse cutting of solid sludge in multiple segments during the same cutting process, ensuring consistent block size. The cutting plate 631 consists of a fixing strip and a cutting blade. The cutting blade is vertically positioned at the lower end of the fixing strip and corresponds one-to-one with the through holes in the sealing top plate 62. This ensures that the blade can be stably inserted into the through holes when not in operation and remains flush with the lower surface of the sealing top plate 62, thus guaranteeing the sealing of the compression chamber 2.

[0056] During the slitting operation, the operator only needs to connect an external power source to drive the second electric push rod 632. The second electric push rod 632 moves the slitting plate 631 downward, causing the slitting blade to extend further into the compression chamber 2 from its original position in the through hole, cutting the solid sludge inside the chamber. Since both the transverse slitting unit 63 and the longitudinal slitting unit 64 are set in multiple groups, different combinations of actions can be used to achieve cross-slitting of the sludge in the transverse and longitudinal directions. When it is necessary to obtain sludge blocks of different specifications or sizes, the corresponding second electric push rod 632 can be selectively driven according to actual needs to flexibly adjust the slitting specifications of the solid sludge, ensuring that the formed sludge blocks meet the requirements for subsequent transportation and disposal.

[0057] By arranging multiple sets of transverse cutting units 63 at equal intervals on the sealed top plate 62, and forming a cross-cooperation with the longitudinal cutting units 64, precise multi-directional and multi-segment cutting of solid sludge is achieved. This not only ensures uniform sludge block volume and specifications, but also allows for flexible selection of cutting combinations to obtain sludge blocks of different sizes according to actual needs, thereby significantly improving the applicability and intelligence level of the equipment. Simultaneously, the cutting blades are flush with the sealed top plate 62 when not in operation, effectively ensuring the sealing performance of the compression chamber 2 and avoiding the risk of sludge leakage during the compression and dewatering processes.

[0058] A wastewater treatment sludge discharge method with sludge compression function, applied to a wastewater treatment system with sludge compression function, includes the following steps: S1: The high-moisture sludge after preliminary sedimentation and solid-liquid separation is introduced into the compression chamber 2, and the compression chamber 2 is sealed by the sealing top plate 62; an external power supply is connected to drive the extrusion module 5 to operate, and the compression separation module 3 gradually pushes the sludge from bottom to top, so that it is continuously compacted in the compression chamber 2; the free water and some capillary water in the sludge are filtered through the compression separation module 3 under the action of extrusion pressure, realizing solid-liquid separation; S2: Under continuous extrusion pressure, the sludge is gradually accumulated to the top of the compression chamber 2 and forms solid sludge blocks. At this time, the sealing top plate 62 and the wall of the compression chamber 2 together form a closed shaping cavity to ensure that the sludge is gradually formed during the compression process. When the sludge needs to be cut and exported, after the solid sludge is compacted to the preset density, the transverse cutting unit 63 and the longitudinal cutting unit 64 are driven to move. The cutting blade extends into the interior of the compression chamber 2 through the through hole on the sealing top plate 62 and cuts the solid sludge longitudinally and transversely along the preset trajectory to obtain solid sludge blocks of uniform size. S3: After the cutting is completed, the second linear drive 65 is started to move the sealing top plate 62 upward, releasing the top of the compression chamber 2 from the closed state and providing an outlet for sludge discharge; S4: When it is necessary to squeeze and export sludge, the cutting module 6 remains stationary, and the extrusion module 5 is driven to move. The extrusion plate 52 pushes the cut solid sludge blocks sequentially to the export module 4 along the guide mechanism. Finally, through the guide seat 41 and the limiting structure of the export module 4, the solid sludge blocks are exported to the outside of the compression chamber 2 in a preset form, thus realizing automatic sludge discharge.

[0059] This invention not only enables efficient solid-liquid separation of sludge, but also allows solid sludge to be cut into different sizes according to transportation requirements.

[0060] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A wastewater treatment system with sludge compression function, characterized in that, include: frame; The compression chamber is horizontally and fixedly mounted on the frame. The sludge separation module is fixedly installed horizontally at the bottom of the compression chamber. The sludge separation module is equipped with a separation unit that can separate the solid and liquid in the compression chamber. The export module is detachably mounted on the left side of the compression chamber and near the top of the compression chamber; The extrusion module is fixedly arranged horizontally relative to the output module on the right side of the compression chamber and near the top of the compression chamber. The extrusion module is used to extrude and shape solid mud and output it from the output end of the output module. A cutting module is located at the top of the compression chamber, and the cutting module is used to cut the shaped solid mud.

2. A wastewater treatment system with sludge compression function according to claim 1, characterized in that, The separation unit is equipped with a separation frame and multiple sets of filter elements that can be detachably installed on the separation frame to separate mud and water.

3. A wastewater treatment system with sludge compression function according to claim 1, characterized in that, The compression module is also equipped with a drive unit that can drive the separation unit to slide longitudinally within the compression chamber; The drive unit is equipped with a lifting frame that can slide longitudinally within the compression chamber; The separation unit is fixedly mounted horizontally on the lifting frame.

4. A wastewater treatment system with sludge compression function according to claim 1, characterized in that, The export module is equipped with a guide seat and a limiting seat that can export sludge in a preset shape; The guide seat is fixedly mounted on the left side of the compression chamber via the limiting seat; The guide seat is slidably inserted and removed within the limiting seat.

5. A wastewater treatment system with sludge compression function according to claim 1, characterized in that, The extrusion module includes a guide chamber, an extrusion plate, a guide rod, a fixing frame, and a first electric push rod; The guide chamber is vertically fixed above the right side of the compression chamber and is connected to the compression chamber; The first electric push rod is vertically fixed to the outside of the guide compartment via the fixing frame; The extrusion plate is horizontally slidably disposed within the guide chamber and a guide rod is vertically disposed on its surface. The rod portion of the guide rod passes through the fixing frame and is slidably engaged with the fixing frame.

6. A wastewater treatment system with sludge compression function according to claim 1, characterized in that, The slitting module is equipped with a mounting frame, a sealed top plate, and a transverse slitting unit and a longitudinal slitting unit that can longitudinally pass through the sealed top plate into the compression chamber; The sealing top plate is securely fastened to the top of the compression chamber; The horizontal cutting unit and the vertical cutting unit are arranged vertically and alternately on the sealing top plate via the mounting bracket.

7. A wastewater treatment system with sludge compression function according to claim 6, characterized in that, The slitting module is also equipped with a second linear actuator capable of vertically driving the sealing top plate longitudinally away from the compression chamber.

8. A wastewater treatment system with sludge compression function according to claim 6, characterized in that, The transverse slitting unit is provided with a slitting plate and a second electric push rod capable of driving the slitting plate to lift longitudinally. The second electric push rod is fixedly mounted vertically on the mounting bracket, with its output shaft passing through the mounting bracket and facing the sealing top plate; The cutting plate is fixedly mounted vertically at the drive end of the second electric push rod.

9. A wastewater treatment sludge discharge method with sludge compression function, applied to a wastewater treatment system with sludge compression function as described in any one of claims 1-8, comprising the following steps: S1: The high-moisture sludge after preliminary sedimentation and solid-liquid separation is introduced into the compression chamber and sealed by the top plate; an external power source is connected to drive the extrusion module to operate, and the extrusion module gradually pushes the sludge from bottom to top, so that it is continuously compacted in the compression chamber; the free water and some capillary water in the sludge are filtered by the extrusion module under the extrusion pressure to achieve solid-liquid separation. S2: Under continuous extrusion pressure, sludge is gradually accumulated to the top of the compression chamber and forms solid sludge blocks. At this time, the sealing top plate and the compression chamber wall together form a closed shaping cavity to ensure that the sludge is gradually formed during the compression process. When the sludge needs to be cut and exported, after the solid sludge is compacted to the preset density, the transverse cutting unit and the longitudinal cutting unit are driven to move. The cutting blade extends into the compression chamber through the through hole on the sealing top plate and cuts the solid sludge longitudinally and transversely along the preset trajectory to obtain solid sludge blocks of uniform size. S3: After the cutting is completed, the second linear drive is started to move the sealing top plate up, releasing the top of the compression chamber and providing an outlet for sludge discharge; S4: When it is necessary to squeeze and export sludge, the cutting module remains stationary, while the extrusion module is driven to move. The extrusion plate pushes the cut solid sludge blocks sequentially to the export module along the guide mechanism. Finally, through the guide seat and limiting structure of the export module, the solid sludge blocks are exported to the outside of the compression chamber in a preset shape, thus achieving automatic sludge discharge.

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