Sludge drying and granulating integrated equipment

Abstract

The invention discloses sludge drying and granulating integrated equipment, and relates to the technical field of sludge drying treatment, the sludge drying and granulating integrated equipment comprises a treatment bin, an extrusion roller is arranged in the treatment bin through a first spring in an abutting manner, an arc-shaped baffle is arranged below the extrusion roller through a buckle, a feeding hopper is arranged for circulating sludge, and the extrusion roller is arranged in the treatment bin through the first spring in the abutting manner; sludge is extruded into sheets through the extrusion rollers to facilitate water evaporation, then a buckle positioning arc-shaped baffle is arranged to block an outlet of the treatment bin, circulation of the sludge in the treatment bin is achieved through the feeding hopper, meanwhile, the hardness of the sludge is gradually increased along with evaporation of water in the sludge, and then the extrusion rollers slide towards the two sides under the counter-acting force of the sludge; opening and closing of the buckles are controlled by monitoring the distance between the two extrusion rollers, buckle limiting is automatically controlled according to the sludge drying degree, then automatic feeding and discharging of adjacent procedures in equipment are achieved, continuous sludge drying and granulation are achieved, and manual participation and equipment investment are reduced.

Description

Technical Field

[0001] The present invention provides a sludge treatment device, which relates to the technical field of sludge drying treatment, and particularly relates to an integrated device for sludge drying and granulation. Background Art

[0002] The existing technology for sludge drying generally includes a pretreatment stage of concentration adjustment, crushing and screening, and stirring and homogenization, as well as a subsequent heating and drying stage. Some dried sludge also has other economic values and can be used as raw materials for building materials such as lightweight ceramsite and bricks. Heavy metals are solidified at high temperature and a stable structure is formed.

[0003] However, the existing equipment usually treats different processes separately. On the one hand, this requires more manual input, and on the other hand, it also affects the processing progress. If the dried sludge will be granulated later, the subsequent processing steps are the same and can be solidified. It is very necessary to form an integrated processing device.

[0004] Based on this, those skilled in the art have proposed an integrated device for sludge drying and granulation, forming a continuous sludge drying and granulation device, which can realize a complete processing flow of sludge pretreatment - granulation - dehydration. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the present invention provides an integrated device for sludge drying and granulation. In the reprocessing bin, an extrusion roller is tightly pressed by a spring. A high-speed rotating device is used to apply shear force and extrusion force to the dried sludge, combined with a heating system to accelerate sludge drying. A feeding hopper that operates periodically repeats the extrusion of the sludge until stage drying is completed. An arc-shaped baffle is arranged below the feeding hopper through a buckle. The drying degree of the sludge is judged by the extrusion roller and the arc-shaped baffle is automatically opened, so that the device can automatically enter the next-stage granulation process according to the drying degree of the sludge.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: An integrated device for sludge drying and granulation, including a processing bin. The processing bin includes conventional systems such as feeding and homogenization, heating, and steam treatment for sludge drying treatment. In the existing technology, sludge is directly introduced into the processing bin, a neutralizing reagent is added to the sludge, mixed and stirred, dried to a certain degree and then exported, impurities are screened out, and then the treated sludge is granulated or further dried.

[0007] Because the final treatment methods of sludge are different, the entire treatment process usually needs to be divided into multiple processes. After each process is completed, the next treatment equipment needs to be selected according to requirements. Therefore, more manual labor is required to monitor the working status of different equipment. As a result, there is no unified equipment for sludge treatment in existing equipment, which causes a lot of inconvenience to the entire treatment work. In view of the problem that existing equipment cannot continuously process, technicians in this field have proposed improvements to the equipment to achieve the monitoring of the sludge treatment status and can automatically adjust to the next treatment process according to the treatment progress.

[0008] An extrusion roller is arranged inside the treatment bin, and spiral pressing plates that mesh with each other are arranged on the side of the extrusion roller. As the two extrusion rollers rotate, the sludge passing through the middle is rotationally extruded, so that the sludge is pressed into a block structure with a smaller thickness, which is convenient for drying the water content through the high-temperature environment in the treatment bin.

[0009] A feeding hopper is arranged below the extrusion roller. The feeding hopper makes periodic movements under the drive of a power mechanism, and sends the sludge passing through the extrusion roller above the extrusion roller again for repeated rotational extrusion until the water content in the sludge is reduced to a predetermined range.

[0010] A first spring is arranged at the end of the extrusion roller. The first spring presses against the extrusion roller for rotational extrusion. After the water content of the sludge is reduced to a certain extent, its hardness increases, forming a greater resistance to the extrusion roller pressed by the first spring on both sides, and pushing the extrusion roller to compress the first spring and displace to both sides.

[0011] A buckle is arranged below the feeding hopper. The distance between the buckles is related to the extrusion roller. The opening and closing of the treatment bin are controlled by the buckle. When the sludge is normally dried in the treatment bin, the buckle locks the outlet of the treatment bin, so that the sludge passes through the extrusion roller and then continues to circulate through the feeding hopper. When the water content of the sludge drops below a certain range, the rotational meshing of the extrusion roller is subjected to a greater resistance, and then the buckle is automatically controlled to open the outlet of the treatment bin by setting the advancement distance of the extrusion roller, and the sludge enters the next treatment step from the outlet.

[0012] Preferably, a first slide rail is fixed on the inner wall of the treatment bin, and an arc-shaped baffle is slidably arranged inside the treatment bin through the first slide rail. A sealing structure for the outlet is formed by surrounding the bottom of the treatment bin by the arc-shaped baffles on both sides, so that the sludge passing through the extrusion roller falls above the arc-shaped baffle and is sent above the extrusion roller for cyclic treatment by the periodically operating feeding hopper.

[0013] The feeding hopper is arranged along the upper surface of the arc-shaped baffle, and the sludge falling above the arc-shaped baffle is circularly conveyed to the extrusion roller through the feeding hopper to ensure the uniformity of sludge drying in the treatment bin.

[0014] The buckle is arranged between the two arc-shaped baffles. The enclosure state of the two arc-shaped baffles is positioned by the buckle, preventing the arc-shaped baffle from sliding along the first slide rail and exposing the channel due to the increased pressure above. Moreover, the movement of the arc-shaped baffle can also be controlled by monitoring the distance between the extrusion rollers.

[0015] Preferably, the end of the buckle is tightly abutted and restrained by a second spring. The backward end of the buckle is tightly abutted by the second spring to ensure its forward abutting state against the buckle. And when resetting the arc-shaped baffle, the buckle can automatically limit its closed state.

[0016] A carry rod is arranged inside the treatment chamber and abuts against the buckle below the arc-shaped baffle. The extrusion rollers are associated with the carry rod. After the carry rod senses an increase in the distance between the two extrusion rollers, the abutting state of the buckle is cancelled by the carry of the carry rod. Then the buckle slides to open the arc-shaped baffle, avoiding the wear of the buckle caused by the repeated sliding due to the uneven acting force of the sludge on the extrusion rollers for many times, which affects the monitoring accuracy.

[0017] Preferably, a rotating shaft is arranged inside the treatment chamber. A crawler is meshed on the side of the rotating shaft. The feeding hopper is periodically rotated inside the treatment chamber through the crawler. With the driving of the rotating shaft by the power mechanism, the crawler drives the feeding hopper to move periodically along the crawler.

[0018] Preferably, bumps are fixed at both ends of the feeding hopper. The feeding hopper is rotatably arranged through the bumps at both ends. The feeding hopper rotatably installed through the bumps can change the angle relative to the crawler according to the force change, thereby ensuring the tight contact between the feeding hopper and the side wall of the arc-shaped baffle, and also ensuring that the sludge in the feeding hopper is poured into the extrusion rollers for extrusion and drying.

[0019] A third spring is arranged between the feeding hopper and the crawler. When the feeding hopper contacts the side of the arc-shaped baffle, the third spring is compressed, ensuring the scraping effect on the sludge on the side of the arc-shaped baffle. At the same time, through the third spring, it also ensures that there is a certain buffer when the feeding hopper encounters the corresponding dumping structure above the extrusion rollers, avoiding the problem that the sludge cannot be smoothly dumped due to different deflection angles caused by different masses of sludge.

[0020] Preferably, two opposite side walls inside the treatment chamber are fixed with second slide rails. The side bearings at the ends of the extrusion rollers are connected with sliders. The extrusion rollers are slidably arranged inside the second slide rails through the sliders. The two extrusion rollers can have a certain degree of carry change along the second slide rails through the sliders, thereby achieving the purpose of monitoring the drying degree of the sludge by changing the distance between the two extrusion rollers.

[0021] The first spring is tightly abutted against the side of the slider away from each other to ensure the meshing and extrusion of the two squeezing rollers on the sludge. The buckle is associated with the squeezing roller through the slider. When the two squeezing rollers slide relatively by a certain distance due to the reaction force of the sludge, the buckle automatically triggers to open the outlet of the treatment chamber for discharging.

[0022] Preferably, rollers are arranged on the side of the slider. The slider is connected to the second slide rail through the rollers, and the friction between the slider and the second slide rail is reduced through the rollers, avoiding the problem of poor monitoring accuracy of the water content of the sludge by the squeezing rollers with large mass.

[0023] An adjusting screw rod penetrates through the side of the slider. The buckle is connected to the adjusting screw rod. The triggering accuracy of the squeezing roller on the buckle can be adjusted through the adjusting screw rod, and corresponding adjustments are required to adapt to different drying requirements or different types of sludge treatment.

[0024] Preferably, a U-shaped block is fixedly connected to the side of the slider. The adjusting screw rod penetrates through the U-shaped arm of the U-shaped block. The adjusting screw rod can ensure the balance of the acting force on the buckle through the U-shaped block, avoiding problems such as deformation easily caused by unilateral force.

[0025] A fixing block is fixed on the side of the inner section of the U-shaped arm of the adjusting screw rod. A connecting rod is rotatably sleeved on the side of the adjusting screw rod through the fixing block. The buckle is tightly abutted and limited through the connecting rod. When the squeezing roller is subjected to the reaction force of the sludge, the adjusting screw rod advances equidistantly along with the squeezing roller. The connecting rod pushed by the fixing block also advances simultaneously, and the connecting rod advances to trigger the buckle.

[0026] Preferably, the feeding hopper includes a main body. The main body is rotatably arranged inside the treatment chamber. A scraper is hinged at an opening on one side of the main body. The hinged scraper can be opened when dumping sludge and slides along the fixed structure to scrape off the sludge attached to the surface to avoid adhesion.

[0027] A limit pin is arranged between the top of the advancing end of the scraper and the main body through a spring. The limit pin ensures the positioning of the scraper at the end of the main body, avoiding the sludge from slipping due to being pushed away by the gravity of the sludge.

[0028] Preferably, a push block is hinged on the inner wall of the main body corresponding to the limit pin. A trigger push rod is fixed on the inner side of the treatment chamber and above the squeezing roller corresponding to the push block. When the feeding hopper runs above the squeezing roller and encounters the trigger push rod arranged at this position, the trigger push rod moves along the inner guide rail of the main body, cancels the limit of the scraper by squeezing the push block, and squeezes the side wall of the push block to slide for sludge scraping.

[0029] The present invention discloses an integrated equipment for sludge drying and granulation, and the beneficial effects thereof are as follows:

[0030] 1. In the integrated equipment for sludge drying and granulation, the extrusion rollers are tightly pressed in the processing bin by the first springs. The sludge is extruded into thin slices by the extrusion rollers to facilitate the evaporation of moisture. Then, a buckle is set to position the arc-shaped baffle to block the outlet of the processing bin, and the sludge in the processing bin is circulated through the feeding hopper. At the same time, as the moisture in the sludge evaporates, its hardness gradually increases. As a result, the extrusion rollers slide to both sides under the reaction force of the sludge. By monitoring the distance between the two extrusion rollers, the opening and closing of the buckle are controlled, so as to automatically control the buckle limit according to the drying degree of the sludge, and then realize the automatic feeding and discharging of adjacent processes in the equipment, realize the continuous progress of sludge drying and granulation, and reduce manual participation and equipment investment.

[0031] 2. In the integrated equipment for sludge drying and granulation, the arc-shaped baffle is slidably installed on the inner side of the processing bin through the first slide rail, so as to realize the sliding installation of the two arc-shaped baffles along the first slide rail. Then, the two arc-shaped baffles on both sides are closed by the buckle to block the outlet of the processing bin, ensure the blocking of the outlet of the processing bin, and automatically open the discharge port according to the drying degree of the sludge inside the associated processing bin.

[0032] 3. In the integrated equipment for sludge drying and granulation, a carry rod is arranged below the arc-shaped baffle to limit the buckle tightly pressed by the second spring. Then, the carry of the carry rod is driven by the distance between the two extrusion rollers, so that only the carry of the carry rod with different degrees will occur before the distance between the two extrusion rollers reaches a certain degree, and the buckle will not slide back and forth, avoiding the wrong opening of the buckle due to the difference in sludge purity, and also avoiding the wear of the buckle caused by sliding back and forth, which affects the control accuracy.

[0033] 4. In the integrated equipment for sludge drying and granulation, the extrusion rollers are installed by rolling through sliders, which avoids the large weight of the extrusion rollers from affecting the monitoring accuracy of the change in sludge moisture content. In addition, the side of the slider is installed with an adjustable distance screw through a U-shaped block, and the distance between the extrusion rollers can be adjusted through the adjustable distance screw to trigger the buckle.

[0034] 5. In the integrated equipment for sludge drying and granulation, the feeding hopper is rotatably installed by being tightly pressed by the third spring, so that the feeding hopper can scrape the sludge by compressing the third spring when approaching the arc-shaped block. In addition, a scraper is installed at the opening on one side of the main body of the feeding hopper through a limit pin for articulated connection. When the feeding hopper moves above the extrusion rollers, the limit of the scraper can be released by triggering the push rod, and the push rod is tightly pressed against the inner wall of the scraper to scrape the sludge, avoiding the adhesion of highly viscous sludge in the feeding hopper. Description of the Drawings

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0036] Figure 1 Schematic diagram of the overall structure of the present invention;

[0037] Figure 2 Schematic diagram of the internal structure of the processing chamber of the present invention;

[0038] Figure 3 Schematic diagram of the installation structure of the slider of the present invention inside the second slide rail;

[0039] Figure 4 Schematic diagram of the installation structure of the arc-shaped baffle inside the processing chamber of the present invention;

[0040] Figure 5 Schematic diagram of the feeding hopper structure of the present invention;

[0041] Figure 6 Assembly drawing of the feeding hopper structure of the present invention;

[0042] Figure 7 Schematic diagram of the associated structure between the extrusion roller and the buckle of the present invention;

[0043] Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at position A in

[0044] In the figure: 1. Processing chamber; 2. Extrusion roller; 3. Feeding hopper; 301. Main body; 302. Scraper; 303. Limit pin; 4. First spring; 5. Buckle; 6. First slide rail; 7. Arc-shaped baffle; 8. Second spring; 9. Carry rod; 10. Rotating shaft; 11. Track; 12. Convex block; 13. Third spring; 14. Second slide rail; 15. Slider; 16. Roller; 17. Spacing adjustment screw rod; 18. U-shaped block; 19. Fixed block; 20. Connecting rod; 21. Pushing block. Detailed implementation manners

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0046] An embodiment of the present invention discloses an integrated equipment for sludge drying and granulation;

[0047] According to the attached Figure 1 As shown, it includes a processing bin 1. The processing bin 1 includes conventional systems such as feeding homogenization, heat supply, and steam treatment for sludge drying. In the prior art, sludge is directly introduced into the processing bin 1, a neutralizing reagent is added to the sludge and mixed and stirred evenly, and after drying to a certain extent, it is exported, impurities are screened out, and then the treated sludge is granulated or further dried.

[0048] Because the final treatment methods of sludge are different, usually the whole treatment process needs to be divided into multiple processes. After each process is completed, the next treatment equipment needs to be selected according to needs. Therefore, more labor is required to monitor the working states of different equipment. Therefore, there is no unified equipment for sludge treatment in the existing equipment, which causes a lot of inconvenience to the whole treatment work. In view of the problem that the existing equipment cannot continuously process, those skilled in the art have proposed improvements to the equipment to realize the monitoring of the sludge treatment state and can automatically adjust to the next treatment process according to the treatment progress.

[0049] An extrusion roller 2 is arranged inside the processing bin 1. Mutually meshing spiral pressing plates are arranged on the side of the extrusion roller 2. As the two extrusion rollers 2 rotate, the sludge passing through the middle is rotationally extruded, so that the sludge is pressed into a block structure with a smaller thickness, which is convenient for drying the water content of the sludge through the high-temperature environment in the processing bin 1.

[0050] According to the attached Figure 2 and the attached Figure 3 and the attached Figure 4 As shown, a feeding hopper 3 is arranged below the extrusion roller 2. The feeding hopper 3 makes a periodic movement under the drive of a power mechanism, and sends the sludge passing through the extrusion roller 2 to the upper part of the extrusion roller 2 again for repeated rotational extrusion until the water content in the sludge is reduced to a predetermined range.

[0051] A first spring 4 is arranged at the end of the extrusion roller 2. The first spring 4 abuts against the extrusion roller 2 for rotational extrusion. After the water content of the sludge is reduced to a certain extent, its hardness increases, forming a greater resistance to the extrusion roller 2 abutted by the first springs 4 on both sides, and pushing the extrusion roller 2 to compress the first spring 4 and displace to both sides.

[0052] A buckle 5 is arranged below the feeding hopper 3. The distance between the buckles 5 is associated with the extrusion roller 2. The opening and closing of the processing bin 1 are controlled through the buckle 5. When the sludge is normally dried in the processing bin 1, the buckle 5 locks the outlet of the processing bin 1, so that the sludge continues to circulate through the feeding hopper 3 after passing through the extrusion roller 2. When the water content of the sludge drops below a certain range, the rotational meshing of the extrusion roller 2 is subjected to a greater resistance, and then the buckle 5 is automatically controlled to open the outlet of the processing bin 1 through the set advancement distance of the extrusion roller 2, and the sludge enters the next processing step from the outlet.

[0053] In the attached drawings, a separate feeding hopper structure is adopted, and the rotating shaft 10 installed on the feeding hopper 3 and the crawler 11 adopt a more concise linear structure. Only the installation of the rotating shaft 10, the slider 11 and the feeding hopper 3 is shown. Inside the treatment chamber 1, the rotating shaft 10 and the crawler 11 need to be installed in a shape closer to the inner wall of the treatment chamber 1 for better effect, which can ensure the scraping effect of the feeding hopper 3 on the sludge on the surface of the arc-shaped baffle 7.

[0054] According to the attached Figure 2 and the attached Figure 4 As shown, a first slide rail 6 is fixed to the inner wall of the treatment chamber 1. An arc-shaped baffle 7 is slidably arranged inside the treatment chamber 1 through the first slide rail 6. A sealing structure for the outlet is formed by surrounding the bottom of the treatment chamber 1 with the arc-shaped baffles 7 on both sides, so that the sludge passing through the squeezing roller 2 falls above the arc-shaped baffle 7 and is then sent above the squeezing roller 2 by the periodically operating feeding hopper 3 for cyclic treatment.

[0055] The feeding hopper 3 is arranged along the upper surface of the arc-shaped baffle 7. The sludge falling above the arc-shaped baffle 7 is cyclically conveyed to the squeezing roller 2 through the feeding hopper 3 to ensure the evenness of the sludge drying in the treatment chamber 1.

[0056] The buckle 5 is arranged between the arc-shaped baffles 7 on both sides. The surrounding state of the arc-shaped baffles 7 on both sides is positioned through the buckle 5 to prevent the arc-shaped baffle 7 from sliding along the first slide rail 6 and exposing the channel due to the increase in the upper pressure. And the movement of the arc-shaped baffle 7 can also be controlled by monitoring the distance between the squeezing rollers 2.

[0057] A second spring 8 is tightly arranged at the end of the buckle 5. The backward end of the buckle 5 is tightly pressed by the second spring 8 to ensure its forward pressing state on the buckle 5, and when the arc-shaped baffle 7 is reset, the buckle 5 can automatically limit its closed state.

[0058] A carry rod 9 is tightly arranged inside the treatment chamber 1 and below the arc-shaped baffle 7 to press against the buckle 5. The squeezing roller 2 is associated with the carry rod 9. After the carry rod 9 senses an increase in the distance between the two squeezing rollers 2, the pressing state on the buckle 5 is cancelled through the carry of the carry rod 9, and then the buckle 5 slides to open the arc-shaped baffle 7, avoiding the buckle 5 from sliding repeatedly and wearing out due to the sludge applying uneven forces to the squeezing roller 2 for many times, which affects the monitoring accuracy.

[0059] According to the attached Figure 3 and the attached Figure 5 As shown, a rotating shaft 10 is arranged inside the treatment chamber 1. A crawler 11 is meshed on the side of the rotating shaft 10. The feeding hopper 3 is periodically rotated inside the treatment chamber 1 through the crawler 11. With the driving of the rotating shaft 10 by the power mechanism, the crawler 11 drives the feeding hopper 3 to move periodically along the crawler 11.

[0060] According to the attached Figure 3 and the attachedFigure 5 and the attached Figure 6 As shown, bumpers 12 are fixed at both ends of the feeding hopper 3. The feeding hopper 3 is rotatably arranged through the bumpers 12 at both ends. The feeding hopper 3 rotatably installed through the bumpers 12 can change the angle relative to the crawler 11 according to the force change, thereby ensuring the tight contact between the feeding hopper 3 and the side wall of the arc-shaped baffle 7, and also ensuring that the sludge in the feeding hopper 3 is poured into the squeezing roller 2 for squeezing and drying.

[0061] A third spring 13 is arranged between the feeding hopper 3 and the crawler 11. When the feeding hopper 3 contacts the side of the arc-shaped baffle 7, the third spring 13 is compressed, ensuring the scraping effect on the sludge on the side of the arc-shaped baffle 7. At the same time, through the third spring 13, it is also ensured that there is a certain buffer when the feeding hopper 3 encounters the corresponding dumping structure above the squeezing roller 2, avoiding the problem that the deflection angles are different due to different qualities of sludge and the sludge cannot be smoothly dumped.

[0062] Two opposite side walls inside the treatment chamber 1 are fixed with second slide rails 14. The side bearings at the ends of the squeezing rollers 2 are connected with sliders 15. The squeezing rollers 2 are slidably arranged inside the second slide rails 14 through the sliders 15. The two squeezing rollers 2 can undergo a certain degree of advancement change along the second slide rails 14 through the sliders 15, thereby achieving the purpose of monitoring the dryness degree of the sludge through the change in the distance between the two squeezing rollers 2.

[0063] The first spring 4 is tightly arranged on the side of the slider 15 away from each other, ensuring the meshing and squeezing of the two squeezing rollers 2 on the sludge. The buckle 5 is associated with the squeezing roller 2 through the slider 15. When the two squeezing rollers 2 slide relative to each other by a certain distance due to the reaction force of the sludge, the buckle 5 automatically triggers to open the outlet of the treatment chamber 1 for discharging materials.

[0064] Rollers 16 are arranged on the side of the slider 15. The slider 15 is connected with the second slide rail 14 through the rollers 16 in a rolling manner. The friction between the slider 15 and the second slide rail 14 is reduced through the rollers 16, avoiding the problem that the squeezing roller 2 with a large mass has poor monitoring accuracy for the water content of the sludge.

[0065] According to the attached Figure 5 and the attached Figure 6 and the attached Figure 7 and the attached Figure 8 As shown, an adjustment screw rod 17 is arranged through the side of the slider 15. The buckle 5 is connected with the adjustment screw rod 17. The triggering accuracy of the squeezing roller 2 on the buckle 5 can be adjusted through the adjustment screw rod 17, and corresponding adjustments are required to adapt to the use in different drying requirements or different types of sludge treatment.

[0066] A U-shaped block 18 is fixedly connected to the side of the slider 15. The adjustment screw rod 17 passes through the U-shaped arm of the U-shaped block 18. The adjustment screw rod 17 can ensure the balance of the acting force on the buckle 5 through the U-shaped block 18, avoiding problems such as deformation that are likely to occur due to unilateral force.

[0067] A fixed block 19 is fixed to the side of the distance-adjusting lead screw 17 located on the inner side section of the U-shaped arm. A connecting rod 20 is rotatably sleeved on the side of the distance-adjusting lead screw 17 through the fixed block 19. The buckle 5 is tightly pressed and limited through the connecting rod 20. When the extrusion roller 2 is subjected to the reaction force of the sludge, the distance-adjusting lead screw 17 advances equidistantly together with the extrusion roller 2. The connecting rod 20 pushed by the fixed block 19 also advances simultaneously, and the connecting rod 20 advances to trigger the buckle 5.

[0068] The feeding hopper 3 includes a main body 301. The main body 301 is rotatably arranged inside the treatment chamber 1. A scraper 302 is hinged to one side opening of the main body 301. The hinged scraper 302 can be opened when dumping the sludge and slides along the fixed structure to scrape the sludge attached to the surface to avoid adhesion.

[0069] A limit pin 303 is arranged between the top of the advancing end of the scraper 302 and the main body 301 through a spring. The limit pin 303 ensures the positioning of the scraper 302 at the end of the main body 301, avoiding the sludge from slipping due to being pushed open by the gravity of the sludge.

[0070] A push block 21 is hinged to the inner wall of the main body 301 corresponding to the limit pin 303. A trigger push rod is fixed to the treatment chamber 1 inside and above the extrusion roller 2 corresponding to the push block 21. When the feeding hopper 3 runs above the extrusion roller 2 and encounters the trigger push rod arranged at this position, the trigger push rod 2 moves along the inner guide rail of the main body 301, cancels the limit of the scraper 302 by squeezing the push block 21, and squeezes the side wall of the push block 21 to slide for sludge scraping.

[0071] The second spring 8 is tightly pressed between the inner wall of the treatment chamber 1 and the advancing rod 9, and one end of the advancing rod 9 close to the buckle 5 is set as a wedge-shaped structure, and the end 5 of the buckle 5 is tightly pressed under the elastic force of the second spring 8 to ensure its positioning state.

[0072] In this sludge drying and granulation integrated equipment, the extrusion roller 2 is tightly pressed in the treatment chamber 1 through the first spring 4. The sludge is extruded into thin slices by the extrusion roller 2 to facilitate water evaporation. Then, the buckle 5 is set to position the arc-shaped baffle 7 to block the outlet of the treatment chamber 1. The sludge in the treatment chamber 1 is circulated through the feeding hopper 3. At the same time, as the water in the sludge evaporates, its hardness gradually increases. Furthermore, the extrusion roller 2 slides to both sides under the reaction force of the sludge. By monitoring the distance between the two extrusion rollers 2, the opening and closing of the buckle 5 are controlled, realizing automatic control of the limit of the buckle 5 according to the dryness of the sludge. Furthermore, the automatic feeding and discharging of adjacent processes in the equipment are realized, and the continuous progress of sludge drying and granulation is achieved, reducing manual participation and equipment investment.

[0073] Further, an arc-shaped baffle 7 is slidably installed inside the treatment bin 1 through a first slide rail 6, enabling the two arc-shaped baffles 7 to be slidably installed along the first slide rail 6. Then, the two arc-shaped baffles 7 are positioned and closed at the outlet of the treatment bin 1 through a buckle 5, ensuring the sealing of the outlet of the treatment bin 1 and automatically opening the discharge port according to the dryness degree of the sludge inside the associated treatment bin 1.

[0074] Furthermore, a carry rod 9 is arranged below the arc-shaped baffle 7 to limit the buckle 5 that is tightly pressed by a second spring 8. Then, the carry of the carry rod 9 is driven by the distance between the two extrusion rollers 2. Before the distance between the two extrusion rollers 2 reaches a certain degree, only different degrees of carry of the carry rod 9 will occur, and there will be no back-and-forth sliding of the buckle 5, avoiding the incorrect opening of the buckle 5 due to differences in sludge purity and also avoiding the wear of the buckle 5 caused by back-and-forth sliding, which affects the control accuracy.

[0075] Furthermore, the extrusion roller 2 is rotatably installed through a slider 15, avoiding the large weight of the extrusion roller 2 from affecting the monitoring accuracy of changes in sludge water content. In addition, the side of the slider 15 is installed with an adjustable distance screw rod 17 through a U-shaped block 18, and the distance between the extrusion rollers 2 can be adjusted through the adjustable distance screw rod 17 to trigger the buckle 5.

[0076] Moreover, the feed hopper 3 is rotatably installed with a third spring 13 pressing against it, enabling the feed hopper 3 to scrape the sludge by compressing the third spring 13 when approaching the arc-shaped baffle 7. In addition, one side opening of the main body 301 of the feed hopper 3 is hinged with a scraper 302 limited by a limit pin 303. When the feed hopper 3 moves above the extrusion roller 2, the limit of the scraper 302 can be released by triggering a push rod, and the push rod presses against the inner wall of the scraper 302 to scrape the sludge, avoiding the adhesion of highly viscous sludge in the feed hopper 3.

[0077] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated sludge drying and granulation device, comprising a processing chamber (1), wherein the processing chamber (1) comprises conventional systems such as feeding homogenization, heating and steam treatment for sludge drying treatment, and is characterized in that: The processing chamber (1) is provided with a squeezing roller (2) inside for rotating and squeezing the sludge; A feeding hopper (3) is provided below the squeezing roller (2) to feed the sludge back to the top of the squeezing roller (2) for squeezing and drying; A first spring (4) is provided at the end of the squeezing roller (2), and the first spring (4) presses against the squeezing roller (2) to rotate and squeeze; A buckle (5) is provided below the feeding hopper (3), and the buckle (5) is set in accordance with the spacing of the squeezing rollers (2).

2. The integrated sludge drying and granulation equipment according to claim 1, characterized in that: A first slide rail (6) is fixed to the inner wall of the processing bin (1), an arc-shaped baffle (7) is slidably arranged on the inner side of the processing bin (1) via the first slide rail (6), the feeding hopper (3) is arranged along the upper surface of the arc-shaped baffle (7), and the buckle (5) is arranged between the arc-shaped baffles (7) on both sides.

3. The integrated sludge drying and granulation equipment according to claim 2, characterized in that: A second spring (8) is provided at the end of the buckle (5) against the sleeve, and an advance rod (9) is provided inside the processing bin (1) and below the arc-shaped baffle plate (7) against the buckle (5), and the squeezing roller (2) is associated with the advance rod (9).

4. The integrated sludge drying and granulation equipment according to claim 1, characterized in that: A rotating shaft (10) is arranged inside the processing bin (1), a crawler (11) is arranged on the side of the rotating shaft (10) in meshing engagement, and the feeding hopper (3) is rotatably arranged inside the processing bin (1) via the crawler (11).

5. The integrated sludge drying and granulation equipment according to claim 1, characterized in that: The two ends of the feeding hopper (3) are fixed with protrusions (12), and the feeding hopper (3) is rotatably arranged by the protrusions (12) at the two ends. A third spring (13) is arranged between the feeding hopper (3) and the crawler (11).

6. The integrated sludge drying and granulation equipment according to claim 1, characterized in that: A second slide rail (14) is fixed to two opposite side walls in the processing chamber (1); a side bearing at the end of the squeezing roller (2) is connected to a slider (15); the squeezing roller (2) is slidably arranged on the inner side of the second slide rail (14) via the slider (15); the first spring (4) is tightly arranged on the side away from the slider (15); and the buckle (5) is associated with the squeezing roller (2) via the slider (15).

7. The integrated sludge drying and granulation equipment according to claim 6, characterized in that: A roller (16) is arranged on the side of the slider (15), and the slider (15) is rollingly connected to the second slide rail (14) via the roller (16). A pitch-adjusting screw rod (17) is arranged through the side of the slider (15), and the buckle (5) is connected to the pitch-adjusting screw rod (17).

8. The integrated sludge drying and granulation equipment according to claim 7, characterized in that: A U-shaped block (18) is fixedly connected to the side of the slider (15); the pitch-adjusting screw rod (17) passes through the U-shaped arm of the U-shaped block (18); a fixing block (19) is fixed to the side of the pitch-adjusting screw rod (17) located at the inner side of the U-shaped arm; a connecting rod (20) is rotatably sleeved on the side of the pitch-adjusting screw rod (17) through the fixing block (19); and the buckle (5) is pressed against and limited by the connecting rod (20).

9. The integrated sludge drying and granulation equipment according to claim 1, characterized in that: The feeding hopper (3) comprises a main body (301), the main body (301) is rotatably arranged inside the processing bin (1), a scraper (302) is hingedly arranged at one side of the opening of the main body (301), and a limiting pin (303) is arranged between the top of the feed end of the scraper (302) and the main body (301) via a spring.

10. The integrated sludge drying and granulation equipment according to claim 9, characterized in that: A push block (21) is hingedly provided on the inner wall of the main body (301) corresponding to the limit pin (303), and a trigger push rod is fixed on the inner side of the processing bin (1) and above the squeezing roller (2) corresponding to the push block (21).

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