A sewage treatment solid-liquid separation device and separation method

Abstract

This invention discloses a solid-liquid separation device and method for wastewater treatment, belonging to the technical field of solid-liquid separation devices. The wastewater treatment solid-liquid separation device includes a body and a filter belt arranged on the body. Multiple sets of sludge-combing plates are arranged along the width of the top of the filter belt, with two sludge-combing plates in each set arranged in a V-shape. It also includes a vertical shaft, with the sludge-combing plates elastically engaging with the vertical shaft around its circumference; and a rotating shaft with multiple sets of sliding sleeves slidably fitted on its outer side, each sleeve corresponding to one of the sludge-combing plates. Guide sleeves are rotatably connected to the outer surface of the sliding sleeves. A swing plate automatically senses sludge blockage and lateral overflow between the sludge-combing plates, and a linkage transmission mechanism drives the sludge-combing plates to adaptively deflect, increasing the passage distance and promptly clearing accumulated sludge. This effectively solves the problems of sludge blockage and uneven sludge distribution that easily occur with fixed sludge-combing plates.

Description

Technical Field

[0001] This invention relates to the field of solid-liquid separation device technology, and in particular to a solid-liquid separation device and separation method for wastewater treatment. Background Technology

[0002] Belt filter presses are widely used in solid-liquid separation applications such as municipal sewage, industrial wastewater, and sludge dewatering due to their advantages of continuous operation, large processing capacity, and low operating costs. The gravity dewatering section, as the core pretreatment unit of the belt filter press, mainly removes free water from the sludge through the conveying action of the filter belt and gravity drainage, reducing the sludge moisture content and providing favorable conditions for subsequent pressing and dewatering.

[0003] Chinese patent CN201728003U discloses a belt filter press, comprising several first rollers, several pressing rollers, several second rollers, a first filter belt tensioned between each of the first rollers and each of the pressing rollers, a second filter belt tensioned between each of the second rollers and each of the pressing rollers, and a correction device configured in conjunction with the filter belts. The first filter belt is provided with a gravity dewatering section extending at a certain angle. The portions of the first and second filter belts tensioned between each of the pressing rollers overlap to form a pressing dewatering section. The pressing dewatering section is tensioned between each of the pressing rollers in an approximately "S" shape and consists of a low-pressure dewatering section at the front and a high-pressure dewatering section at the rear. The pressing rollers in the low-pressure dewatering section are configured such that their diameter is larger than that in the high-pressure dewatering section. The pressing rollers in the high-pressure dewatering section are arranged at intervals of large and small along the conveying direction. The above-mentioned filter press has the advantages of high filtration efficiency and low moisture content in the filter cake.

[0004] Chinese invention patent CN120900284B discloses a belt filter press for treating wastewater from zirconium-titanium ore production. After the first and second filter belts are tightened by the first and second tensioning components, the rollers inside the limiting sleeve disperse the agglomerated solid particles in the solid-liquid mixture. Then, under the action of the distribution frame and the diversion component, the solid-liquid mixture of zirconium-titanium ore can be evenly distributed on the upper surface of the first filter belt. With the transmission and compression of the first and second filter belts, solid-liquid separation can be carried out. Moreover, it can effectively avoid the inability of the first and second filter belts to apply pressure and dehydrate the solid-liquid mixture evenly due to the agglomeration of solid particles.

[0005] Chinese patent CN223646443U discloses a sewage-water separation mechanism. By setting up a cofferdam, a material distribution assembly, and a height limiting assembly, the material to be dewatered can be distributed more evenly, optimizing the distribution of the material on the filter cloth and improving the solid-liquid separation effect. By effectively controlling the height and distribution of the material, the friction force that needs to be overcome when pushing the material is reduced, energy consumption is reduced, and the energy efficiency ratio of the equipment is improved.

[0006] While existing publicly available technologies disclose various gravity dewatering section material distribution, slitting, and height-limiting structures that can achieve initial sludge leveling and slitting for drainage, the sludge combing plates are mostly fixed installations. In actual operation, as the sludge is continuously transported with the filter belt and water is constantly drained, the sludge gradually thickens and its viscosity increases, easily leading to accumulation and blockage between adjacent sets of fixed sludge combing plates, thus affecting the dispersion of sludge at the top of the filter belt. In some existing solutions with adjustable sludge combing plate angles, the plates cannot adaptively adjust their opening according to the blockage status, resulting in frequent manual cleaning, high labor intensity, and impacting the continuous and stable operation of the equipment.

[0007] Therefore, it is necessary to provide a wastewater treatment solid-liquid separation device and separation method to solve the above-mentioned technical problems. Summary of the Invention

[0008] The purpose of this invention is to provide a solid-liquid separation device and method for wastewater treatment, so as to solve the technical problems mentioned in the background art.

[0009] Based on the above ideas, the present invention provides the following technical solution: a wastewater treatment solid-liquid separation device, including a body and a filter belt arranged on the body, the top of the filter belt having multiple sets of sludge combing plates arranged along its width direction, each set of sludge combing plates having two plates arranged in a V-shaped structure, and also including; The vertical axis, wherein the mud comb plate is elastically fitted with the vertical axis in the circumferential direction around the vertical axis; The rotating shaft has multiple sets of sliding sleeves on its outer side. Each sliding sleeve corresponds to a mud combing plate. A guide sleeve is rotatably connected to the outer circumference of the sliding sleeve. A guide rod connected to the mud combing plate passes through the sliding sleeve and slides with the sliding sleeve. A guide assembly, located between the sliding sleeve and the rotating shaft, is used to convert the circumferential rotation of the rotating shaft into axial movement of the sliding sleeve relative to the rotating shaft. A swing plate, located between two comb plates and arranged along the conveying direction of the filter belt, rotates around a vertical axis and engages with the vertical axis. A connecting rod is provided between the swing plate and the sliding sleeve. A guide seat hinged to one end of the connecting rod is slidably engaged with a guide member fixed to the side wall of the swing plate, and a slider hinged to the other end of the connecting rod is slidably engaged with the sliding sleeve along the axis of rotation. When the swing plate pulls the slider relative to the sliding sleeve through the connecting rod, the sliding sleeve can be connected to the rotating shaft through the guide assembly.

[0010] As a further aspect of the present invention: a sleeve is fixedly connected to the side of the mud comb near the vertical axis, and the sleeve is coaxially sleeved on the outside of the vertical axis and elastically fitted with the vertical axis in a circumferential direction.

[0011] As a further aspect of the present invention: the guiding component includes a sliding rod that is elastically connected to the sliding sleeve along the diameter direction of the rotating shaft, and a columnar guided member is elastically fitted at one end of the sliding rod near the rotating shaft; a guiding groove that cooperates with the guided member is provided on the outer circular surface of the rotating shaft, and the guiding groove is a closed ring structure composed of two spiral grooves with opposite directions of rotation.

[0012] As a further embodiment of the present invention: the bottom of the slider is configured as a groove, the top wall of the groove is configured as a pressing part that cooperates with the sliding rod, and the pressing part is inclined.

[0013] As a further aspect of the present invention: the outer circular surface of the rotating shaft is provided with a groove at the junction of the two spiral grooves, the diameter of the groove is greater than the width of the guide groove, the inner wall of the guide groove protrudes outward to form a limiting part, and the bottom of the guided part and the protruding ring protruding outward along the diameter direction of the bottom can be inserted into the guide groove through the groove.

[0014] As a further embodiment of the present invention: a rotating rod is hinged to the top of the slider, and a snap-fit ​​component is fixed to the bottom of the rotating rod. The snap-fit ​​component is used to lock the sliding sleeve and the slider along the axis of rotation. Multiple sets of positioning rings are coaxially fixed to the outside of the rotating shaft, and a guide portion that cooperates with the rotating rod is provided on the side of the positioning ring near the sliding sleeve.

[0015] As a further aspect of the present invention, the side of the snap-fit ​​member away from the sliding sleeve is configured as an inclined surface.

[0016] As a further aspect of the present invention: one end of the sliding sleeve is provided with a limiting ring that cooperates with the snap-fit ​​component. The inner side of the limiting ring is configured as a second arc surface, and the side of the snap-fit ​​component near the limiting ring is configured as a first arc surface. The centers of the first arc surface and the second arc surface are both located on the rotation axis of the rotating rod. When the first arc surface and the second arc surface are in contact, the slider and the sliding sleeve can be locked along the axis of rotation.

[0017] As a further aspect of the present invention: the swing plate is provided with a guide cylinder that cooperates with the vertical axis, the guide cylinder being coaxially sleeved on the outside of the vertical axis and rotatingly cooperating with the vertical axis.

[0018] A separation method using the above-mentioned wastewater treatment solid-liquid separation device includes the following steps: water-containing sludge is conveyed forward with the filter belt and undergoes stripping, dewatering, and material distribution operations via a sludge comb; when the sludge becomes blocked between adjacent sludge combs and flows to both sides of the filter belt, the lateral sludge flow pushes the swing plate to deflect around the vertical axis; the swing plate drives the slider to displace relative to the sliding sleeve through a connecting rod, causing the sliding sleeve to establish a transmission connection with the rotating shaft through a guide component; the rotating shaft continues to rotate, driving the sliding sleeve to slide along the axial direction of the rotating shaft through the guide component; the sliding sleeve synchronously drives the sludge comb to deflect around the vertical axis, expanding the passage distance between adjacent sludge combs.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: Compared with the prior art, the present invention can automatically sense the sludge blockage and lateral overflow between the sludge combing plates through the swing plate, and drive the sludge combing plates to adaptively deflect and increase the passage distance through the linkage transmission mechanism, so as to timely dredge the accumulated sludge. This effectively solves the problems of sludge blockage and uneven sludge distribution that are easy to occur in fixed sludge combing plates. There is no need for manual on-site duty and frequent cleaning of sludge blockage, which can ensure the continuous and smooth operation of sludge transportation and strip dewatering on the filter belt. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the comb plate and swing plate structure of the present invention; Figure 3 This is a top view of the mud comb and the swing plate of the present invention; Figure 4 This is a schematic diagram of the connection structure between the sliding sleeve and the mud comb of the present invention; Figure 5 This is a schematic diagram of the connection structure between the swing plate and the sliding sleeve of the present invention; Figure 6 This is the present invention. Figure 5 A magnified structural diagram at point A; Figure 7 This is a schematic diagram of the engagement of the snap-fit ​​component and the limiting ring of the present invention; Figure 8 This is a schematic diagram of the guide groove structure of the present invention; Figure 9 This is a schematic diagram of the cooperation between the guide seat and the guide component of the present invention; Figure 10 This is the present invention. Figure 9 A magnified structural diagram at point B.

[0022] In the diagram: 1. Body; 101. Guide plate; 2. Top plate; 3. Rotating shaft; 301. Guide groove; 302. Groove opening; 303. Limiting part; 4. Filter belt; 5. Combing plate; 501. Sleeve; 502. Guide rod; 6. Swing plate; 601. Guide component; 7. Connecting rod; 701. First pin; 702. Second pin; 8. Sliding sleeve; 801. Sliding groove; 9. Vertical shaft; 10. Guide. 11. Connecting shaft; 12. Positioning ring; 1201. Guide part; 13. Rotating rod; 1301. Hinge shaft; 14. Snap-fit ​​part; 1401. First arc surface; 1402. Inclined surface; 15. Limiting ring; 1501. Second arc surface; 16. Slider; 1601. Pressing part; 17. Sliding rod; 18. Magnetic part; 19. Guided part; 1901. Protruding ring; 20. Guide seat. Detailed Implementation

[0023] like Figures 1 to 10 As shown, a wastewater treatment solid-liquid separation device includes a body 1 and a filter belt 4 mounted on the body 1. The body 1 is equipped with multiple rollers for supporting the filter belt 4. The rollers located at the ends of the filter belt 4 are connected to an external motor to drive the filter belt 4 to rotate. One of the rollers is connected to an external cylinder or hydraulic cylinder to adjust the tension of the filter belt 4. The filter belt 4 is arranged horizontally or at an angle. Multiple sets of sludge combing plates 5 are arranged above the filter belt 4 along the conveying direction on the body 1. Each set of sludge combing plates 5 consists of two plates arranged in a V-shape. After the water-containing sludge falls from the feed end of the filter belt 4, the free water is drained downwards from the gaps in the filter belt 4 by gravity. The sludge material moves synchronously with the filter belt 4 and passes through the sludge combing plates 5 in sequence. The V-shaped sludge combing plates 5 are used to slit the sludge, promoting the uniform spread of sludge on the surface of the filter belt 4, providing a working basis for the subsequent pressing and dewatering process.

[0024] A mud-leveling plate can be added to the feed side of the mud-combing plate 5. The mud-leveling plate can scrape the piled mud, limit the maximum thickness of the mud layer, and avoid the problem of excessive local pile-up.

[0025] The above structure is a mature configuration of the existing belt filter press gravity dewatering unit. This application will not elaborate on the assembly details, operating mechanism and other supporting components of the filter press equipment for this part.

[0026] It should be noted that the improvements in this application focus on the gravity dewatering section of the belt filter press; the gravity section filter belt 4 has two matching arrangement forms: First, the gravity section filter belt 4 is an independent segmented structure, and the dewatered sludge at the end of the filter belt 4 is transferred to the filter pressing section through the mud guide plate 101 at the end of the machine body 1, and is sandwiched between the upper and lower filter belts to perform pressing dewatering, corresponding to the technical solution of the prior art document CN201728003U; Second, the gravity section filter belt 4 directly serves as the upper filter belt of the whole machine, and is paired with the lower filter belt configured in the filter pressing section to clamp the sludge to complete the squeezing dewatering, corresponding to the composite belt structure disclosed in the prior art document CN120900284B.

[0027] The sludge combs 5 can be used to divide and disperse the sludge on the top of the filter belt 4, preventing it from concentrating in certain areas. However, in actual use, as the filter belt 4 moves forward, the amount of free water gradually decreases, causing the sludge to dry. When the dried sludge clogs between adjacent sets of combs 5, it affects the overall dispersion effect. Therefore, in this design, each set of combs 5 is installed with a hinge, allowing each comb 5 to rotate around its axis. This facilitates adjustment of the angle between two V-shaped combs 5. When clogs occur between adjacent sets of combs 5, the combs 5 can be driven to deflect inward, increasing the distance between them and allowing sludge to pass through.

[0028] Combination Figure 1 , Figure 4 The two V-shaped sludge combing plates 5 are equipped with vertical shafts 9 on their guide sides. A sleeve 501 is fixedly connected to the side of the sludge combing plate 5 near the vertical shaft 9. The sleeve 501 is coaxially sleeved on the outside of the vertical shaft 9 and elastically engages with the vertical shaft 9 along its circumference. A top plate 2 is fixed to the top of the machine body 1, and multiple sets of vertical shafts 9 are fixedly connected to the top plate 2. This structure allows the sludge combing plates 5 to rotate around the axis of the vertical shaft 9, thereby adjusting the included angle between two sludge combing plates 5 in the same group, and thus changing the passage distance between adjacent sludge combing plate groups. At the same time, the elastic engagement structure between the sleeve 501 and the vertical shaft 9 can ensure that the sludge combing plates 5 maintain a stable posture under normal working conditions and avoid abnormal deflection caused by sludge compression.

[0029] A rotating shaft 3 is provided at the top of the body 1, and multiple sets of sliding sleeves 8 are coaxially sleeved on the outer side of the rotating shaft 3. The sliding sleeves 8 can slide axially relative to the rotating shaft 3. Figure 4 As shown, a connecting shaft 11 extends outward along its diameter from the outer circular surface of the sliding sleeve 8. A guide sleeve 10 is rotatably mounted on the end of the connecting shaft 11 away from the sliding sleeve 8. A guide rod 502 fixed to the top of the mud combing plate 5 passes through the guide sleeve 10 and slides in cooperation with the guide sleeve 10. With this structure, when the sliding sleeve 8 slides along the axis of the rotating shaft 3, it can drive the mud combing plate 5 to deflect around the vertical axis 9, thereby facilitating the adjustment of the angle of the mud combing plate 5.

[0030] A guide component is provided between the sliding sleeve 8 and the rotating shaft 3. The guide component is configured to convert the circumferential motion of the rotating shaft 3 around its own axis into the axial movement of the sliding sleeve 8 relative to the rotating shaft 3.

[0031] When two adjacent sets of sludge combing plates 5 experience sludge blockage, the sludge traveling with the filter belt 4 will be obstructed and diverted to both sides along the width of the filter belt 4. To address this, a swing plate 6 is installed on the vertical shaft 9 at the midpoint between the two sets of sludge combing plates 5. The swing plate 6 is equipped with a guide cylinder, which is coaxially sleeved on the outside of the vertical shaft 9 and rotates with it. Furthermore, the guide cylinder and the vertical shaft 9 can be circumferentially elastically connected through elastic components such as torsion springs and coil springs, ensuring that the swing plate 6 maintains a stable posture under normal conditions and only deflects under the thrust of the sludge when blockage occurs between the sludge combing plates 5.

[0032] A horizontally arranged connecting rod 7 is provided between the swing plate 6 and the sliding sleeve 8. A slider 16 is hinged to one end of the connecting rod 7 near the sliding sleeve 8, and the slider 16 slides in cooperation with the sliding sleeve 8 along the axis of the rotating shaft 3. The slider 16 is configured such that when it moves axially relative to the sliding sleeve 8, the sliding sleeve 8 can be locked in cooperation with the rotating shaft 3 through a guide assembly or the sliding sleeve 8 can be unlocked from the rotating shaft 3. A guide seat 20 is hinged to one end of the connecting rod 7 near the swing plate 6, and the guide seat 20 slides in cooperation with the swing plate 6 along a direction parallel to the diameter of the vertical axis 9.

[0033] Initially, the oscillating plate 6 is parallel to the conveying direction of the filter belt 4. As the sludge advances with the filter belt 4, it passes sequentially through the oscillating plate 6 and the combing plate 5. When two adjacent sets of combing plates 5 become blocked and the sludge overflows to both sides along the width of the filter belt 4, the oscillating plate 6 can be driven to deflect synchronously. Figure 4 It can be seen that when the swing plate 6 swings around the vertical axis 9, the connecting rod 7 can drive the slider 16 to move axially relative to the sliding sleeve 8, so that the sliding sleeve 8 can cooperate with the rotating shaft 3 through the guide component, thereby converting the circular motion of the rotating shaft 3 into the axial movement of the sliding sleeve 8 relative to the rotating shaft 3. Then, the angle of the sludge combing plate 5 can be adjusted by the cooperation of the guide sleeve 10 and the guide rod 502, which is beneficial to increase the distance between two adjacent sets of sludge combing plates 5, so that the blocked sludge can pass between the two adjacent sets of sludge combing plates 5.

[0034] This solution relies on the swing plate 6 to sense the blockage between two adjacent sets of sludge combing plates 5 and can automatically adjust the fit between the sliding sleeve 8 and the rotating shaft 3. This allows the sliding sleeve 8 and the rotating shaft 3 to fit together in a timely manner according to the sludge blockage. By adjusting the angle of the sludge combing plates 5, the distance between the two adjacent sets of sludge combing plates 5 can be increased, thereby allowing the sludge to pass through and avoiding the problem of uneven sludge dispersion caused by long-term blockage.

[0035] Combination Figure 4 , Figure 9 As shown, one end of the connecting rod 7 is hinged to a guide seat 20 via a first pin 701. A guide member 601 is fixed to the side wall of the swing plate 6. Both sides of the guide member 601 are L-shaped rods, forming a T-shaped channel between the two rods for the T-shaped guide seat 20 to slide, thereby preventing the guide seat 20 from separating from the guide member 601. The length of the guide channel along the diameter of the vertical axis 9 is greater than the length of the guide seat 20, allowing the guide seat 20 to slide along the guide channel. With this structure, when the sliding sleeve 8 moves axially relative to the rotating shaft 3 and drives the comb plate 5 to deflect, the connecting rod 7 can drive the guide seat 20 to slide within the guide channel, thereby preventing interference between the guide seat 20 and the guide member 601.

[0036] Combination Figures 5-10As shown, the other end of the connecting rod 7 is hinged to the slider 16 via the second pin 702. The outer circular surface of the sliding sleeve 8 is provided with a groove 801 along the direction parallel to its axis. The slider 16 slides in the groove 801. The projection of the slider 16 and the groove 801 along the axis of the sliding sleeve 8 is a T-shaped structure.

[0037] The guiding component includes a sliding rod 17 disposed in the slide groove 801 and elastically connected along the diameter direction parallel to the rotating shaft 3, and a columnar guided member 19 is elastically fitted at one end of the sliding rod 17 near the rotating shaft 3. Multiple sets of guide grooves 301 are provided on the outer circular surface of the rotating shaft 3, and the multiple sets of guide grooves 301 are provided in a one-to-one correspondence with multiple sets of sliding sleeves 8, as shown in the reference. Figure 8 As shown, the guide groove 301 is a closed ring structure composed of two spiral grooves with opposite directions of rotation. When one end of the guided member 19 is inserted into the guide groove 301, the circumferential motion of the rotating shaft 3 can be converted into the reciprocating movement of the sliding sleeve 8 along the axis of the rotating shaft 3 through the cooperation between the guided member 19 and the guide groove 301.

[0038] Combination Figure 6 As shown, the bottom of the slider 16 is set as a groove, and the top wall inside the groove is set as an inclined pressing part 1601. When the swing plate 6 swings around the vertical axis 9 and pulls the slider 16 axially relative to the sliding sleeve 8 through the connecting rod 7, the pressure between the inclined pressing part 1601 and the sliding rod 17 can drive the sliding rod 17 to gradually approach the rotating shaft 3 along the diameter direction of the rotating shaft 3, so that one end of the guided member 19 can be inserted into the guide groove 301.

[0039] Reference Figure 6 As shown, both ends of the guided member 19 extend outward along its diameter to form protruding rings 1901. The top end of the guided member 19 and the protruding ring 1901 at the top end are inserted into the mounting hole at the bottom of the sliding rod 17. The mounting hole is stepped, thereby preventing the sliding rod 17 from separating from the guided member 19. Figure 8 As shown, a groove 302 is provided on the outer circular surface of the rotating shaft 3 at the junction of the two spiral grooves. The diameter of the groove 302 is larger than the width of the guide groove 301, and the inner wall of the guide groove 301 (except for the inner wall of the groove 302) protrudes outward to form a limiting part 303. The bottom end of the guided member 19 can be inserted into the guide groove 301 through the groove 302. Through the cooperation between the protruding ring 1901 at the bottom end of the guided member 19 and the limiting part 303 on the inner wall of the guide groove 301, the guided member 19 will not detach from the guide groove 301 within the range of the guide groove 301, which is conducive to the stable cooperation between the guided member 19 and the guide groove 301.

[0040] In summary, when blockage occurs between two adjacent sets of sludge combing plates 5, causing sludge to flow along both sides of the filter belt 4 width direction, it can drive the swing plate 6 to deflect around the vertical axis 9. Since the guide seat 20 is initially located at the end of the guide member 601, the swing plate 6 can pull the connecting rod 7 when it swings, and the connecting rod 7 will pull the slider 16 to move relative to the sliding sleeve 8. During the movement of the slider 16, the squeezing part 1601 can squeeze the sliding rod 17, so that the guided member 19 is in a compressed state. When the rotating shaft 3 rotates... When the slot 302 on the guide groove 301 is aligned with the guided member 19, one end of the guided member 19 can be inserted into the guide groove 301 through the slot 302, so that the sliding sleeve 8 can move axially relative to the rotating shaft 3 during the rotation of the rotating shaft 3. As described above, the sliding sleeve 8 can cause the sludge combing plate 5 to overcome the elastic force between the sleeve 501 and the vertical shaft 9 and deflect synchronously, thereby increasing the distance between two adjacent sets of sludge combing plates 5, which is conducive to the passage of blocked sludge.

[0041] Combination Figures 6-7 As shown, a rotating rod 13 is provided at the top of the slider 16. A hinge seat is provided at one end of the rotating rod 13 near the slider 16. The hinge seat is fixedly connected to the slider 16. The end of the rotating rod 13 is hinged to the hinge seat through a hinge shaft 1301, and the hinge shaft 1301 is elastically engaged with the hinge seat along its circumferential direction. A snap-fit ​​member 14 is fixedly connected to the bottom of the rotating rod 13. A limiting ring 15 that cooperates with the snap-fit ​​member 14 is coaxially fixed to one end of the sliding sleeve 8. The inner surface of the limiting ring 15 is set as a second arc surface 1501. The side of the snap-fit ​​member 14 near the limiting ring 15 is set as a first arc surface 1401. The center of the first arc surface 1401 and the center of the second arc surface 1501 are both located on the axis of the hinge shaft 1301.

[0042] Multiple sets of positioning rings 12 are coaxially fixed to the outer side of the rotating shaft 3. Each set of positioning rings 12 corresponds to a set of sliding sleeves 8. Initially, the sliding sleeves 8 abut against one side of the positioning rings 12, so that the guided member 19 and the slot 302 are in the same vertical plane. The positioning rings 12 have an inclined guide portion 1201 on the side near the sliding sleeves 8, which cooperates with the rotating rod 13.

[0043] With the guide part 1201 provided, when the sliding sleeve 8 abuts against one side of the positioning ring 12, one end of the rotating rod 13 is squeezed by the guide part 1201 and tilts upward, so that the snap-fit ​​member 14 can deflect upward relative to the limiting ring 15 around the axis of the hinge shaft 1301 and be offset from the limiting ring 15. Since the limiting ring 15 abuts against the inner end face of the positioning ring 12, the snap-fit ​​member 14 can move between the two, and the slider 16 can therefore slide freely relative to the sliding sleeve 8. Based on this, when blockage occurs between two adjacent sets of mud combing plates 5, causing the swing plate 6 to sway, the swing plate 6 can pull the slider 16 relative to the sliding sleeve 8 through the connecting rod 7 during the swaying process, so that the slider 16 can squeeze the sliding rod 17; when the guided member 19 cooperates with the guide groove 301 to drive the sliding sleeve 8 to move axially, the swing plate 6 is subject to the resistance of the mud, so that the sliding sleeve 8 can move axially relative to the slider 16, so that the snap-fit ​​member 14 can re-engage with the limiting ring 15; when the sliding sleeve 8 is reset through the cooperation of the guide groove 301 and the guided member 19, the slider 16 can pull the swing plate 6 to reset through the connecting rod 7, so that the swing plate 6 can re-monitor the blockage of the two adjacent sets of mud combing plates 5.

[0044] In one embodiment, the snap-fit ​​14 never enters the slide groove 801, so that when the guide sleeve 8 moves relative to the slider 16, the snap-fit ​​14 can naturally fall into place; In another embodiment, the side of the snap-fit ​​member 14 away from the sliding sleeve 8 is set as an inclined surface 1402. When the snap-fit ​​member 14 enters the sliding groove 801, the outer inclined surface 1402 of the snap-fit ​​member 14 and the inner wall of the sliding groove 801 on the slider 16 can drive the rotating rod 13 and the snap-fit ​​member 14 to deflect upward around the hinge axis 1301. When the snap-fit ​​member 14 is misaligned with the limiting ring 15, under the elastic force, the rotating rod 13 drives the snap-fit ​​member 14 to deflect downward synchronously around the hinge axis 1301, so that the snap-fit ​​member 14 is snapped back onto the side of the limiting ring 15, so that the slider 16 and the sliding sleeve 8 are locked again.

[0045] Combination Figure 1 As shown, both ends of the rotating shaft 3 are rotatably provided with bearing seats, which are fixedly connected to the machine body 1. The rotating shaft 3 can be connected to an external independent motor to drive the rotating shaft 3 to rotate, or it can be connected to the roller at the end of the filter belt 4 through a chain, belt or other transmission component.

[0046] The vertical shaft 9 and the sleeve 501 are rotatably coupled via bearings, and an elastic element, which can be a torsion spring, is provided between the vertical shaft 9 and the sleeve 501. The two ends of the torsion spring are connected to the vertical shaft 9 and the sleeve 501 respectively, so that the sleeve 501 elastically engages with the vertical shaft 9 along the circumferential direction.

[0047] Combination Figure 6As shown, a torsion spring is provided between the hinge shaft 1301 and the hinge seat, with both ends of the torsion spring connected to the hinge shaft 1301 and the hinge seat, respectively. A magnetic element 18 is rotatably mounted on the side of the positioning ring 12 near the sliding sleeve 8, while a circular iron piece that cooperates with the magnetic element 18 is fixedly embedded at the end of the sliding sleeve 8. When the sliding sleeve 8 abuts against the positioning ring 12, the magnetic attraction between the magnetic element 18 and the iron piece helps to position the sliding sleeve 8, preventing it from moving relative to the rotating shaft 3.

[0048] The top end of the sliding rod 17 protrudes outward along its diameter, and a limit spring is connected between the protruding part and the bottom surface of the sliding groove 801. A spring is provided between the top end of the guided member 19 and the top end face of the mounting hole. When the slider 16 and the sliding rod 17 are misaligned, the sliding rod 17 can be reset and drive the guided member 19 to disengage from the guide groove 301.

[0049] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A wastewater treatment solid-liquid separation device, comprising a body (1) and a filter belt (4) arranged on the body (1), wherein multiple sets of sludge combing plates (5) are arranged along the width direction on the top of the filter belt (4), and each set of sludge combing plates (5) consists of two plates arranged in a V-shape, characterized in that, Also includes; The vertical axis (9) is elastically fitted with the vertical axis (9) around the circumference of the vertical axis (9); A rotating shaft (3) is provided with multiple sets of sliding sleeves (8) on the outer side of the rotating shaft (3). The sliding sleeves (8) are provided in a one-to-one correspondence with the mud combing plate (5). The outer circular surface of the sliding sleeve (8) is rotatably connected to a guide sleeve (10). The guide rod (502) connected to the mud combing plate (5) passes through the sliding sleeve (8) and slides in cooperation with the sliding sleeve (8). A guide assembly is provided between the sliding sleeve (8) and the rotating shaft (3) to convert the circumferential rotation of the rotating shaft (3) into the axial movement of the sliding sleeve (8) relative to the rotating shaft (3); A swing plate (6) is located between two comb plates (5) and arranged along the conveying direction of the filter belt (4). The swing plate (6) rotates around the vertical axis (9) and is in rotatable cooperation with the vertical axis (9). A connecting rod (7) is provided between the swing plate (6) and the sliding sleeve (8). A guide seat (20) hinged at one end of the connecting rod (7) is in slidable cooperation with a guide member (601) fixed to the side wall of the swing plate (6). A slider (16) hinged at the other end of the connecting rod (7) is in slidable cooperation with the sliding sleeve (8) along the axis of the rotating shaft (3). When the swing plate (6) pulls the slider (16) relative to the sliding sleeve (8) through the connecting rod (7), the sliding sleeve (8) can be connected to the rotating shaft (3) through the guide assembly.

2. The wastewater treatment solid-liquid separation device according to claim 1, characterized in that: The comb plate (5) is fixedly connected to a sleeve (501) on the side near the vertical shaft (9). The sleeve (501) is coaxially sleeved on the outside of the vertical shaft (9) and elastically fitted with the vertical shaft (9) in the circumferential direction.

3. The wastewater treatment solid-liquid separation device according to claim 1, characterized in that: The guiding component includes a sliding rod (17) that is elastically connected to the sliding sleeve (8) along the diameter direction of the rotating shaft (3). A columnar guided member (19) is elastically fitted at one end of the sliding rod (17) near the rotating shaft (3). A guide groove (301) that cooperates with the guided member (19) is provided on the outer circular surface of the rotating shaft (3). The guide groove (301) is a closed ring structure composed of two spiral grooves with opposite directions of rotation.

4. A wastewater treatment solid-liquid separation device according to claim 3, characterized in that: The bottom of the slider (16) is provided with a groove, and the top wall of the groove is provided with a pressing part (1601) that cooperates with the sliding rod (17). The pressing part (1601) is inclined.

5. A wastewater treatment solid-liquid separation device according to claim 4, characterized in that: The outer circular surface of the rotating shaft (3) is provided with a groove (302) at the junction of the two spiral grooves. The diameter of the groove (302) is greater than the width of the guide groove (301). The inner wall of the guide groove (301) protrudes outward to form a limiting part (303). The bottom of the guided member (19) and the protruding ring (1901) protruding outward along the diameter direction at the bottom can be inserted into the guide groove (301) through the groove (302).

6. A wastewater treatment solid-liquid separation device according to claim 5, characterized in that: The top of the slider (16) is hinged to a rotating rod (13), and the bottom of the rotating rod (13) is fixed to a snap fastener (14). The snap fastener (14) is used to lock the sliding sleeve (8) and the slider (16) along the axis of the rotating shaft (3). Multiple sets of positioning rings (12) are coaxially fixed to the outside of the rotating shaft (3). The positioning ring (12) is provided with a guide part (1201) that cooperates with the rotating rod (13) on the side near the sliding sleeve (8).

7. A wastewater treatment solid-liquid separation device according to claim 6, characterized in that: The side of the snap-fit ​​member (14) away from the slide sleeve (8) is set as a slope (1402).

8. A wastewater treatment solid-liquid separation device according to claim 6, characterized in that: One end of the sliding sleeve (8) is provided with a limiting ring (15) that cooperates with the snap-fit ​​component (14). The inner side of the limiting ring (15) is set as a second arc surface (1501). The side of the snap-fit ​​component (14) near the limiting ring (15) is set as a first arc surface (1401). The centers of the first arc surface (1401) and the second arc surface (1501) are both located on the rotation axis of the rotating rod (13). When the first arc surface (1401) and the second arc surface (1501) are in contact, the slider (16) and the sliding sleeve (8) can be locked along the axis of the rotating shaft (3).

9. A wastewater treatment solid-liquid separation device according to claim 1, characterized in that: The swing plate (6) is provided with a guide cylinder that cooperates with the vertical shaft (9). The guide cylinder is coaxially sleeved on the outside of the vertical shaft (9) and rotates with the vertical shaft (9).

10. A separation method using the wastewater treatment solid-liquid separation device as described in any one of claims 1-9, characterized in that, The process includes the following steps: the sludge containing water is conveyed forward along the filter belt (4) and is slid and drained and spread by the sludge comb (5); when the sludge is blocked between adjacent sludge combs (5) and flows to both sides of the filter belt (4), the lateral sludge flow pushes the swing plate (6) to deflect around the vertical axis (9); the swing plate (6) drives the slider (16) to move relative to the sliding sleeve (8) through the connecting rod (7), causing the sliding sleeve (8) to establish a transmission connection with the rotating shaft (3) by means of the guide component; the rotating shaft (3) continues to rotate, and the sliding sleeve (8) is driven to slide along the axial direction of the rotating shaft (3) through the guide component; the sliding sleeve (8) synchronously drives the sludge comb (5) to deflect around the vertical axis (9), expanding the passage distance between adjacent sludge combs (5).

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