Sludge dewatering and drying equipment

Abstract

The invention discloses sludge dewatering and drying equipment, and relates to the technical field of sludge treatment.The sludge dewatering and drying equipment comprises a double centrifugal dewatering mechanism and a fixed top disc installed at the top of the double centrifugal dewatering mechanism, a sludge filtering mechanism is arranged at the top of the double centrifugal dewatering mechanism, and a conveying and filtering support is arranged in the sludge filtering mechanism; the double centrifugal dewatering mechanism comprises a centrifugal box body, a centrifugal motor is fixedly installed on one side of the top of the centrifugal box body, the output end of the centrifugal motor is fixedly connected with a centrifugal driving gear, and one side of the centrifugal driving gear is connected with a meshing outer gear ring in a meshing mode. The inner centrifugal mesh cylinder is arranged in the outer centrifugal mesh cylinder, and the aperture of the outer centrifugal mesh cylinder is small, so that the inner centrifugal mesh cylinder can centrifugally dewater large-particle sludge, the outer centrifugal mesh cylinder can centrifugally dewater small-particle sludge, and the large-particle sludge and the small-particle sludge are centrifugally dewatered in a layered manner, so that the sludge dewatering efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sludge treatment, in particular to a sludge dewatering and drying equipment. BACKGROUND

[0002] Sludge drying, also known as sludge dewatering, is a process of removing most of the water content from sludge through filtration or evaporation. Generally, after sludge is concentrated, physical methods are used to further reduce the water content of the sludge, making it easier to transport, store, utilize, or further process. There are two methods for drying: natural evaporation and mechanical dewatering. In existing technology, low-temperature and low-pressure techniques are used to adjust the quality of the sludge, press it through a membrane, and then dry it in a vacuum low-temperature environment. The water in the filter cake is fully removed, and the fully dried sludge can be used as fuel for combustion.

[0003] Publication No. CN114291999B discloses a low-energy consumption sludge dewatering and drying integrated equipment. The transmission motor can drive the transmission auger to rotate through the designed treatment mechanism. The transmission augers on both sides can compress and transport the sludge from both sides to the middle. During the compression process, most of the water in the sludge is sent to the bottom of the elastic cover and the treatment sleeve through the filtering action of the drainage net seat and is discharged through the drainage hole and the water guide seat. The pre-extrusion treatment of sludge water is achieved by extruding and compressing the dewatered sludge with multiple adjustable drainage net seats, which avoids the mixing of water and sludge during the compression process of the auger, reduces the processing pressure of the subsequent belt dewatering machine, and reduces the compression power of the pre-compression stage through pretreatment of the sludge. The adhesion of sludge on the surface of the transmission auger is reduced through the frequency vibration of the drainage net seat, improving the integrated treatment. However, the patent still has the following problems in actual use: Although the low-energy consumption sludge dewatering and drying integrated equipment can achieve pre-extrusion treatment of sludge water by extruding and compressing the dewatered sludge with multiple adjustable drainage net seats, the size of the particles in the sludge varies. During extrusion dewatering, large particles of sludge can provide support, leading to incomplete dewatering of the sludge. The extrusion method can cause small particles of sludge to pass through the drainage net seat, affecting the dewatering effect of the sludge. In existing technology, the sludge is dewatered by a centrifugal dewatering machine. However, during operation of the centrifugal dewatering machine, the supernatant pipeline may be blocked, and the deposited iron ions and pharmaceutical residues in the pipeline need to be cleaned frequently, affecting the efficiency of sludge dewatering.

[0004] Therefore, a sludge dewatering and drying equipment is proposed to solve the problems mentioned above. SUMMARY

[0005] The present application aims to provide a sludge dewatering and drying device to solve the problem that the size of particles in the sludge is different, and when dewatering by extrusion, large particles of sludge can provide support, resulting in incomplete dewatering of the sludge, and the extrusion method can cause small particles of sludge to pass through the drainage mesh seat, thereby affecting the dewatering effect of the sludge.

[0006] To achieve the above object, the present application provides the following technical scheme: a sludge dewatering and drying device, comprising a double centrifugal dewatering mechanism and a fixed top disc installed on the top of the double centrifugal dewatering mechanism. The top of the double centrifugal dewatering mechanism is provided with a sludge filtering mechanism, and the inside of the sludge filtering mechanism is provided with a conveying and filtering support. Further comprising: The double centrifugal dewatering mechanism comprises a centrifugal box body, a centrifugal motor is fixedly installed on one side of the top of the centrifugal box body, a centrifugal driving gear is fixedly connected to the output end of the centrifugal motor, and an engagement outer gear ring is meshingly connected on one side of the centrifugal driving gear. The inside of the engagement outer gear ring is fixedly installed with an engagement inner gear ring, the inner side of the engagement inner gear ring is meshingly connected with a plurality of engagement main gears, and the engagement main gears are meshingly connected with an engagement driven gear ring. The inside of the engagement driven gear ring is fixedly installed with a first connecting pipe, the bottom of the first connecting pipe is fixedly installed with a conveying and fixing support, and the outer side of the conveying and fixing support is fixedly installed with an inner centrifugal mesh cylinder.

[0007] Preferably, the bottom of the inner centrifugal mesh cylinder is threadedly connected with a rotating bottom disc, a first conveying motor is fixedly installed at the bottom center position of the rotating bottom disc, a conveying auger is fixedly connected to the output end of the first conveying motor, the conveying auger is rotatably connected with the conveying and fixing support, a first support disc is rotatably connected to the bottom of the engagement main gear, the fixed top disc is rotatably connected with the engagement main gear, and the fixed top disc is rotatably connected with the engagement outer gear ring.

[0008] Preferably, the bottom of the engagement inner gear ring is fixedly installed with a connecting ring, a rotating ring is rotatably connected to the bottom of the connecting ring, an outer centrifugal mesh cylinder is fixedly installed on the inner side of the connecting ring, a plurality of cleaning connecting rods are rotatably connected to the bottom of the rotating ring, a first cleaning scraper is fixedly installed on the outer side of the cleaning connecting rod, and the centrifugal box body is rotatably connected with the engagement outer gear ring.

[0009] Preferably, the outer side of the centrifugal box is fixedly provided with a heating and drying device, the top of the heating and drying device is fixedly provided with a plurality of second connecting pipes, the end of the second connecting pipe is fixedly provided with a rotating pipe, the bottom of the rotating pipe is fixedly provided with a drying net cylinder, and the outer side of the drying net cylinder is symmetrically provided with a second cleaning scraper.

[0010] Preferably, the bottom inner side of the centrifugal box is threadedly connected with an outer filter ring, the inner side of the outer filter ring is rotatably connected with an inner filter ring, the inner filter ring is threadedly connected with the outer centrifugal net cylinder, the bottom of the cleaning connecting rod and the drying net cylinder is fixedly provided with a connecting cylinder, the connecting cylinder is slidably connected with the outer filter ring and the inner filter ring respectively, the bottom of the connecting cylinder is fixedly provided with a fixing block, and the bottom of the fixing block is provided with a locking nut.

[0011] Preferably, the top of the locking nut is fixedly provided with a locking bolt, the locking bolt is threadedly connected with the connecting cylinder, the bottom of the centrifugal box close to the heating and drying device is fixedly provided with a supporting ring, and the bottom of the supporting ring is fixedly provided with supporting legs around.

[0012] Preferably, the sludge filtering mechanism comprises a filtering box, the bottom of the filtering box is fixedly provided with a connecting hopper, the connecting hopper is fixedly provided at the top of the fixed top disc, the connecting hopper is rotatably connected with the first connecting pipe, the two sides of the filtering box are fixedly provided with collecting boxes, the filtering box is symmetrically rotatably connected with connecting hinges close to the top of the filtering box, and the outer sides of the two connecting hinges are rotatably connected with box doors.

[0013] Preferably, the conveying and filtering support is fixedly provided in the interior of the filtering box, the interior of the conveying and filtering support is symmetrically provided with limiting baffle plates up and down on the two sides, a conveying chain is slidably connected between the two limiting baffle plates, a plurality of conveying sprockets are meshingly connected in the interior of the conveying chain, a second conveying motor is fixedly provided on the outer side of the conveying and filtering support, the output end of the second conveying motor is fixedly connected with the conveying sprockets, a conveying roller is fixedly connected between the two conveying sprockets, a sprocket limiting cover is fixedly provided on one side of the top of the filtering box, and a cleaning motor is fixedly provided on one side in the interior of the sprocket limiting cover.

[0014] Preferably, the output end of the cleaning motor is fixedly connected with a sprocket transmission assembly, the outer sides of the cleaning sprocket transmission assembly are symmetrically provided with cleaning threaded rods, the outer sides of the two cleaning threaded rods are threadedly connected with cleaning threaded sleeves, the bottom of the two cleaning threaded sleeves is fixedly provided with a cleaning connecting plate, the two sides of the cleaning connecting plate are symmetrically provided with ejection rods, the bottom of the cleaning connecting plate is fixedly provided with a plurality of spring assemblies, the bottom of the spring assembly is fixedly provided with a cross-shaped cleaning block, and a threaded rod protective cover is fixedly provided on the outer side of the cleaning threaded rod close to the filtering box.

[0015] Compared with the prior art, the sludge dewatering and drying equipment has the advantages that: the inner centrifugal screen cylinder has a larger hole diameter, and the outer centrifugal screen cylinder has a smaller hole diameter, so that the inner centrifugal screen cylinder can centrifugally dewater large-particle sludge, and the outer centrifugal screen cylinder can centrifugally dewater small-particle sludge, thereby improving the sludge dewatering efficiency; the structure of the conveying auger can slowly convey the falling sludge, so that the sludge is uniformly distributed on the inner walls of the inner centrifugal screen cylinder and the outer centrifugal screen cylinder, and accumulation of the sludge is avoided, thereby affecting the sludge dewatering effect; the meshing connection between the conveying sprocket and the conveying chain enables the conveying sprocket to drive the conveying rollers to rotate, so that the gaps between the conveying rollers can filter and treat large-particle impurities in the sludge, and the rotation of the conveying rollers can convey the impurities to the collection box for collection, and the specific contents are as follows: 1. By setting up a dual centrifugal dewatering mechanism, not only can the centrifugal motor drive the centrifugal drive gear to rotate, but the meshing connection between the centrifugal drive gear and the meshing external gear ring also allows the meshing external gear ring to drive the meshing internal gear ring to rotate. Simultaneously, the meshing connection between the meshing internal gear ring and the meshing main gear causes the meshing main gear to rotate. Furthermore, the meshing connection between the main gear ring and the meshing driven gear ring causes the meshing driven gear ring to drive the first connecting pipe, the conveying fixed support, and the inner centrifugal screen cylinder to rotate. The rotation of the inner centrifugal screen cylinder achieves sludge filtration. At the same time, the meshing external gear ring drives the connecting ring and the outer centrifugal screen cylinder to rotate, and the inner centrifugal screen... The inner centrifugal screen cylinder has a larger aperture, while the outer centrifugal screen cylinder has a smaller aperture. Therefore, the inner centrifugal screen cylinder can dewater large sludge particles, while the outer centrifugal screen cylinder can dewater small sludge particles. By separating large and small sludge particles for centrifugal dewatering, the efficiency of sludge dewatering is improved. The first conveyor motor is started, driving the conveyor auger to rotate. Utilizing the structural characteristics of the conveyor auger, the falling sludge is slowly conveyed, ensuring its even distribution on the inner and outer centrifugal screen cylinders, preventing sludge accumulation and thus avoiding affecting the dewatering effect. During sludge centrifugal dewatering, the conveyor auger and the inner centrifugal screen... The cylinders rotate synchronously, facilitating sludge centrifugation. When cleaning the sludge on the inner wall of the inner centrifuge cylinder is required, the first conveying motor drives the conveying auger to rotate, cleaning the inner wall of the inner centrifuge cylinder. Simultaneously, the heating and drying equipment is activated, generating hot air which is conveyed to the drying cylinder via the second connecting pipe and rotating pipe. This dries the sludge on the surfaces of both the inner and outer centrifuge cylinders, facilitating sludge dewatering. When cleaning the dried sludge is required, the locking nuts and bolts are loosened, and the fixing block and connecting cylinder are rotated, causing the connecting cylinder to rotate... The cleaning connecting rod and the drying screen rotate, causing the first cleaning scraper to adhere to the outer surface of the outer centrifugal screen. At the same time, the second cleaning scrapers on both sides of the drying screen adhere to the inner surface of the outer centrifugal screen and the outer surface of the inner centrifugal screen, respectively. The first and second cleaning scrapers can clean the sludge on the surface of the outer and inner centrifugal screens, improving the cleaning effect of the outer and inner centrifugal screens. The wastewater continues to be filtered through the outer filter ring, inner filter ring, and the internal mesh of the rotating base. At the same time, the outer filter ring, inner filter ring, and rotating base can be removed from the bottom of the centrifuge box to collect the dewatered and dried sludge. 2. By setting the sludge filtering mechanism, the second conveying motor can drive the conveying sprocket to rotate, the conveying sprocket and the conveying chain are connected in meshing mode, the conveying sprocket drives the conveying roller to rotate, the gap between the conveying rollers can filter and treat the large-particle impurities in the sludge, the rotation of the conveying roller can convey the impurities to the collecting box for collection, part of the impurities can be stuck between the conveying rollers, the cleaning motor drives the sprocket transmission assembly and the cleaning threaded rod to rotate, the cleaning threaded sleeve drives the cleaning connecting plate and the ejection rod to move, the ejection rod can open the box doors on both sides, the impurities are collected, the spring assembly can realize the lifting movement of the cross-shaped cleaning block, the impurities stuck in the gap between the conveying rollers can be cleaned, the sludge adhered to the surface of the conveying roller can be cleaned, and the preliminary filtering effect of the sludge is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole three-dimensional structure schematic diagram of the application; Figure 2 It is a three-dimensional structure schematic diagram of the double centrifugal dewatering mechanism in the application; Figure 3 It is a three-dimensional structure schematic diagram of the meshing outer gear ring in the application; Figure 4 It is a three-dimensional structure schematic diagram of the outer centrifugal mesh tube in the application; Figure 5 It is a three-dimensional structure schematic diagram of the inner centrifugal mesh tube in the application; Figure 6 It is a three-dimensional structure schematic diagram of the outer filtering ring and the inner filtering ring in the application; Figure 7 It is a three-dimensional structure schematic diagram of the first cleaning scraper and the second cleaning scraper in the application; Figure 8 It is a three-dimensional structure schematic diagram of the connecting tube in the application; Figure 9 It is a three-dimensional structure schematic diagram of the sludge filtering mechanism in the application; Figure 10 It is a three-dimensional structure schematic diagram of the conveying roller in the application; Figure 11 It is a three-dimensional structure schematic diagram of the cross-shaped cleaning block in the application.

[0017] In the figure: 1, double centrifugal dewatering mechanism; 101, centrifugal box; 102, centrifugal motor; 103, centrifugal driving gear; 104, meshing outer gear ring; 105, meshing inner gear ring; 106, meshing main gear; 107, meshing driven gear ring; 108, first connecting pipe; 109, inner centrifugal screen cylinder; 110, conveying fixed support; 111, rotating base plate; 112, first conveying motor; 113, conveying auger; 114, first support plate; 115, connecting ring; 116, rotating ring; 117, outer centrifugal screen cylinder; 118, cleaning connecting rod; 119, first cleaning scraper; 120, heating and drying equipment; 121, second connecting pipe; 122, rotating pipe; 123, drying screen cylinder; 124, second cleaning scraper; 125, outer filter ring; 126, inner filter ring; 127, connecting cylinder; 128, fixed block; 129, locking nut; 130, locking bolt; 131, fixed top plate; 132, support ring; 133, support leg; 2, sludge filtering mechanism; 201, filter box; 202, connecting hopper; 203, collection box; 204, connecting hinge; 205, box door; 206, conveying filter support; 207, limiting baffle; 208, conveying chain; 209, conveying sprocket; 210, second conveying motor; 211, conveying roller; 212, sprocket limiting cover; 213, cleaning motor; 214, sprocket transmission assembly; 215, cleaning threaded rod; 216, cleaning threaded sleeve; 217, cleaning connecting plate; 218, ejection rod; 219, spring assembly; 220, cross-shaped cleaning block; 221, threaded rod protective cover. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0019] Please refer to Figures 1-5The application provides the technical scheme: a sludge dewatering and drying equipment, which comprises a double centrifugal dewatering mechanism 1 and a fixed top disc 131 installed on the top of the double centrifugal dewatering mechanism 1, the top of the double centrifugal dewatering mechanism 1 is provided with a sludge filtering mechanism 2, the inside of the sludge filtering mechanism 2 is provided with a conveying filtering support 206, the double centrifugal dewatering mechanism 1 comprises a centrifugal box body 101, the top side of the centrifugal box body 101 is fixedly installed with a centrifugal motor 102, the output end of the centrifugal motor 102 is fixedly connected with a centrifugal driving gear 103, one side of the centrifugal driving gear 103 is meshedly connected with a meshing outer gear ring 104, the inside of the meshing outer gear ring 104 is fixedly installed with a meshing inner gear ring 105, the inner side of the meshing inner gear ring 105 is meshedly connected with a plurality of meshing main gears 106, the meshing main gears 106 are meshedly connected with a meshing driven gear ring 107, the inside of the meshing driven gear ring 107 is fixedly installed with a first connecting pipe 108, the bottom of the first connecting pipe 108 is fixedly installed with a conveying fixed support 110, and the outer side of the conveying fixed support 110 is fixedly installed with an inner centrifugal mesh cylinder 109, the centrifugal motor 102 drives the centrifugal driving gear 103 to rotate, the centrifugal driving gear 103 is meshedly connected with the meshing outer gear ring 104, so that the meshing outer gear ring 104 drives the meshing inner gear ring 105 to rotate, the meshing inner gear ring 105 is meshedly connected with the meshing main gears 106, so that the meshing main gears 106 rotate, the meshing main gears 106 are meshedly connected with the meshing driven gear ring 107, so that the meshing driven gear ring 107 drives the first connecting pipe 108, the conveying fixed support 110 and the inner centrifugal mesh cylinder 109 to rotate, and the sludge is filtered through the rotation of the inner centrifugal mesh cylinder 109.

[0020] Please refer to Figures 3-6, the bottom of the rotating bottom disc 111 is fixedly installed with a first conveying motor 112 at the center position, the output end of the first conveying motor 112 is fixedly connected with a conveying auger 113, the conveying auger 113 is rotatably connected with the conveying fixed support 110, the bottom of the meshing main gear 106 is rotatably connected with a first support disc 114, the fixed top disc 131 is rotatably connected with the meshing main gear 106, the fixed top disc 131 is rotatably connected with the meshing outer gear ring 104, the bottom of the meshing inner gear ring 105 is fixedly installed with a connecting ring 115, the bottom of the connecting ring 115 is rotatably connected with a rotating ring 116, the inner side of the connecting ring 115 is fixedly installed with an outer centrifugal screen cylinder 117, the bottom of the rotating ring 116 is rotatably connected with a plurality of cleaning connecting rods 118, the outer side of the cleaning connecting rod 118 is fixedly installed with a first cleaning scraper 119, the centrifugal box body 101 is rotatably connected with the meshing outer gear ring 104, the meshing outer gear ring 104 drives the connecting ring 115 and the outer centrifugal screen cylinder 117 to rotate, because the aperture of the inner centrifugal screen cylinder 109 is larger and the aperture of the outer centrifugal screen cylinder 117 is smaller, therefore the inner centrifugal screen cylinder 109 can centrifuge and dewater the large-particle sludge, the outer centrifugal screen cylinder 117 can centrifuge and dewater the small-particle sludge, by layering centrifuging and dewatering the large-particle sludge and the small-particle sludge, the efficiency of sludge dewatering is improved, the first conveying motor 112 is started to drive the conveying auger 113 to rotate, by using the structural characteristics of the conveying auger 113, the falling sludge can be slowly conveyed, so that the sludge is uniformly distributed on the inner walls of the inner centrifugal screen cylinder 109 and the outer centrifugal screen cylinder 117, sludge accumulation is avoided, so as to affect the dewatering effect of the sludge, when centrifuging and dewatering the sludge, the conveying auger 113 and the inner centrifugal screen cylinder 109 rotate synchronously, which is convenient for centrifuging the sludge, when it is necessary to clean the sludge on the inner wall of the inner centrifugal screen cylinder 109, the first conveying motor 112 can be used to drive the conveying auger 113 to rotate, and the inner wall of the inner centrifugal screen cylinder 109 is cleaned by the conveying auger 113.

[0021] Please refer to Figures 2-8The outer side of the centrifugal box body 101 is fixedly installed with a heating and drying device 120, the top of the heating and drying device 120 is fixedly installed with a plurality of second connecting pipes 121, the end of the second connecting pipe 121 is fixedly installed with a rotating pipe 122, the bottom of the rotating pipe 122 is fixedly installed with a drying net cylinder 123, the outer side of the drying net cylinder 123 is symmetrically installed with a second cleaning scraper 124, the bottom inner side of the centrifugal box body 101 is threadedly connected with an outer filter ring 125, the inner side of the outer filter ring 125 is rotatably connected with an inner filter ring 126, the inner filter ring 126 is threadedly connected with the outer centrifugal net cylinder 117, the bottom of the cleaning connecting rod 118 and the drying net cylinder 123 is fixedly installed with a connecting cylinder 127, the connecting cylinder 127 is slidably connected with the outer filter ring 125 and the inner filter ring 126 respectively, the bottom of the connecting cylinder 127 is fixedly installed with a fixed block 128, the bottom of the fixed block 128 is provided with a locking nut 129, the top of the locking nut 129 is fixedly installed with a locking bolt 130, the locking bolt 130 is threadedly connected with the connecting cylinder 127, the bottom of the centrifugal box body 101 close to the heating and drying device 120 is fixedly installed with a supporting ring 132, the bottom of the supporting ring 132 is fixedly installed with a supporting leg 133 around, the heating and drying device 120 is started, the heating and drying device 120 generates drying hot air, and the drying hot air is delivered into the drying net cylinder 123 through the second connecting pipe 121 and the rotating pipe 122, so that the sludge on the surface of the inner centrifugal net cylinder 109 and the outer centrifugal net cylinder 117 is dried, and the sludge is dehydrated and dried, when the sludge after drying is needed to be cleaned, the locking nut 129 and the locking bolt 130 are loosened, and the fixed block 128 and the connecting cylinder 127 are rotated, so that the connecting cylinder 127 drives the cleaning connecting rod 118 and the drying net cylinder 123 to rotate, the first cleaning scraper 119 is attached to the outer surface of the outer centrifugal net cylinder 117, and the second cleaning scraper 124 on both sides of the drying net cylinder 123 is respectively attached to the inner surface of the outer centrifugal net cylinder 117 and the outer surface of the inner centrifugal net cylinder 109, the sludge on the surface of the outer centrifugal net cylinder 117 and the inner centrifugal net cylinder 109 can be cleaned by the first cleaning scraper 119 and the second cleaning scraper 124, the cleaning effect of the outer centrifugal net cylinder 117 and the inner centrifugal net cylinder 109 is improved, the sewage is filtered through the outer filter ring 125, the inner filter ring 126 and the rotating bottom disc 111, and the outer filter ring 125, the inner filter ring 126 and the rotating bottom disc 111 are detached from the bottom of the centrifugal box body 101, so that the dehydrated and dried sludge can be collected.

[0022] Please refer to Figure 1 , Figures 9-10The sludge filtering mechanism 2 comprises a filtering box 201, a connecting hopper 202 fixedly installed at the bottom of the filtering box 201, the connecting hopper 202 being fixedly installed at the top of the fixed top disc 131 and being rotatably connected with the first connecting pipe 108, collecting boxes 203 fixedly installed at the two sides of the filtering box 201, connecting hinges 204 rotatably connected with the top of the filtering box 201 in a symmetrical manner, box doors 205 rotatably connected with the outer sides of the two connecting hinges 204, a conveying and filtering support 206 fixedly installed inside the filtering box 201, limiting baffle plates 207 symmetrically installed on the inner sides of the conveying and filtering support 206 in an up-down manner, a conveying chain 208 slidably connected between the two limiting baffle plates 207, a plurality of conveying sprockets 209 meshingly connected inside the conveying chain 208, a second conveying motor 210 fixedly installed at the outer side of the conveying and filtering support 206, the output end of the second conveying motor 210 being fixedly connected with the conveying sprockets 209, and a conveying roller 211 fixedly connected between the two conveying sprockets 209.

[0023] Please refer to Figures 9-11 A sprocket limiting cover 212 is fixedly installed at one side of the top of the filtering box 201, a cleaning motor 213 is fixedly installed at one side of the inside of the sprocket limiting cover 212, a sprocket transmission assembly 214 is fixedly connected with the output end of the cleaning motor 213, cleaning threaded rods 215 are symmetrically installed at the outer side of the sprocket transmission assembly 214, cleaning threaded sleeves 216 are threadedly connected with the outer sides of the two cleaning threaded rods 215, a cleaning connecting plate 217 is fixedly installed at the bottom of the two cleaning threaded sleeves 216, ejecting rods 218 are symmetrically installed at the two sides of the cleaning connecting plate 217, a plurality of spring assemblies 219 are fixedly installed at the bottom of the cleaning connecting plate 217, cross-shaped cleaning blocks 220 are fixedly installed at the bottom of the spring assemblies 219, a threaded rod protection cover 221 is fixedly installed at the outer side of the cleaning threaded rods 215 close to the filtering box 201, and the threaded rod protection cover 221 is fixedly installed at the outer side of the cleaning threaded rods 215 close to the filtering box 201. Some impurities may be stuck between the conveying rollers 211, the cleaning motor 213 is started to drive the sprocket transmission assembly 214 and the cleaning threaded rods 215 to rotate, the cleaning threaded sleeves 216 drive the cleaning connecting plate 217 and the ejecting rods 218 to move, the ejecting rods 218 can top the two box doors 205 open, which is convenient for collecting impurities, the spring assemblies 219 can realize the lifting and moving of the cross-shaped cleaning blocks 220, which can clean the impurities stuck in the gaps between the conveying rollers 211 and can clean the sludge adhered to the surfaces of the conveying rollers 211, and the effect of the preliminary filtration of sludge is improved.

[0024] Working principle: Before using the sludge dewatering and drying equipment, the overall situation of the device needs to be checked to determine whether it can work normally, according to Figure 1 Figure 11 As shown in the figure, first, the second conveying motor 210 drives the conveying sprocket 209 to rotate, and the conveying sprocket 209 and the conveying chain 208 are connected by meshing, so that the conveying sprocket 209 drives the conveying roller 211 to rotate. Not only can the gap between the conveying rollers 211 be used to filter and treat large particles of impurities in the sludge, but also the rotation of the conveying rollers 211 can convey the impurities to the collection box 203 for collection. At the same time, part of the impurities will be stuck between the conveying rollers 211. Start the cleaning motor 213 to drive the sprocket transmission assembly 214 and the cleaning threaded rod 215 to rotate, so that the cleaning threaded sleeve 216 drives the cleaning connecting plate 217 and the ejector rod 218 to move. The ejector rod 218 can open the box door 205 on both sides, which is convenient for collecting impurities. At the same time, the elastic force of the spring assembly 219 can realize the lifting and moving of the cross-shaped cleaning block 220, which can not only clean the impurities stuck in the gap between the conveying rollers 211, but also clean the sludge adhered to the surface of the conveying rollers 211, thereby improving the effect of preliminary filtration of sludge. The spring assembly 219 is composed of an extension sleeve and a connecting spring, which can realize the lifting and moving of the cross-shaped cleaning block 220.

[0025] ​Secondly, the centrifugal motor 102 drives the centrifugal driving gear 103 to rotate, and the meshing outer gear ring 104 drives the meshing inner gear ring 105 to rotate by virtue of the meshing connection between the centrifugal driving gear 103 and the meshing outer gear ring 104, and the meshing main gear 106 rotates by virtue of the meshing connection between the meshing inner gear ring 105 and the meshing main gear 106, and the meshing slave gear ring 107 drives the first connecting pipe 108, the conveying fixed support 110 and the inner centrifugal mesh cylinder 109 to rotate by virtue of the meshing connection between the meshing main gear 106 and the meshing slave gear ring 107, and the sludge is filtered by the rotation of the inner centrifugal mesh cylinder 109, and the meshing outer gear ring 104 drives the connecting ring 115 and the outer centrifugal mesh cylinder 117 to rotate, and the inner centrifugal mesh cylinder 109 can centrifugally dewater the large-particle sludge, and the outer centrifugal mesh cylinder 117 can centrifugally dewater the small-particle sludge, so that the efficiency of sludge dewatering is improved, the first conveying motor 112 drives the conveying auger 113 to rotate, the structure of the conveying auger 113 can slowly convey the falling sludge, the sludge is uniformly distributed on the inner walls of the inner centrifugal mesh cylinder 109 and the outer centrifugal mesh cylinder 117, the sludge is prevented from being accumulated, and the dewatering effect of the sludge is prevented from being affected, the conveying auger 113 synchronously rotates with the inner centrifugal mesh cylinder 109 during the centrifugal dewatering of the sludge, and the centrifugal dewatering of the sludge is facilitated, and the inner wall of the inner centrifugal mesh cylinder 109 is cleaned by the rotation of the conveying auger 113 driven by the first conveying motor 112.

[0026] Finally, the heating drying device 120 is started to generate hot air, which is delivered into the drying net cylinder 123 through the second connecting pipe 121 and the rotating pipe 122, so as to dry the sludge on the surface of the inner centrifugal net cylinder 109 and the outer centrifugal net cylinder 117, facilitating the dewatering and drying of the sludge. When it is necessary to clean the dried sludge, the locking nut 129 and the locking bolt 130 are loosened, and the fixed block 128 and the connecting cylinder 127 are rotated, so that the connecting cylinder 127 drives the cleaning connecting rod 118 and the drying net cylinder 123 to rotate, and the first cleaning scraper 119 is attached to the outer surface of the outer centrifugal net cylinder 117, and the second cleaning scraper 124 on both sides of the drying net cylinder 123 is respectively attached to the inner surface of the outer centrifugal net cylinder 117 and the outer surface of the inner centrifugal net cylinder 109. The first cleaning scraper 119 and the second cleaning scraper 124 can clean the sludge on the surface of the outer centrifugal net cylinder 117 and the inner centrifugal net cylinder 109, improving the cleaning effect of the outer centrifugal net cylinder 117 and the inner centrifugal net cylinder 109. The sewage is filtered through the outer filter ring 125, the inner filter ring 126 and the rotating bottom disc 111, and the outer filter ring 125, the inner filter ring 126 and the rotating bottom disc 111 are detached from the bottom of the centrifugal box body 101, so as to collect the dewatered and dried sludge.

[0027] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can make modifications to the technical solutions described in the foregoing embodiments, or make equivalent replacements to part of the technical features, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A sludge dewatering and drying device, comprising a dual centrifugal dewatering mechanism (1) and a fixed top plate (131) installed on the top of the dual centrifugal dewatering mechanism (1). The top of the dual centrifugal dewatering mechanism (1) is provided with a sludge filtration mechanism (2), and the sludge filtration mechanism (2) is provided with a conveying filtration support (206) inside. Its features are, Also includes: The dual centrifugal dehydration mechanism (1) includes a centrifuge box (101), a centrifugal motor (102) is fixedly installed on one side of the top of the centrifuge box (101), a centrifugal drive gear (103) is fixedly connected to the output end of the centrifugal motor (102), and a meshing external gear ring (104) is meshed on one side of the centrifugal drive gear (103). Among them, an internal gear ring (105) is fixedly installed inside the external gear ring (104), and a plurality of main gears (106) are meshed on the inner side of the internal gear ring (105), and meshing slave gear rings (107) are meshed between the main gears (106). Among them, a first connecting pipe (108) is fixedly installed inside the meshing toothed ring (107), a conveying fixed bracket (110) is fixedly installed at the bottom of the first connecting pipe (108), and an inner centrifugal mesh cylinder (109) is fixedly installed on the outside of the conveying fixed bracket (110).

2. The sludge dewatering and drying equipment according to claim 1, characterized in that: The bottom of the inner centrifugal mesh cylinder (109) is threadedly connected to a rotating base (111). A first conveying motor (112) is fixedly installed at the center of the bottom of the rotating base (111). A conveying auger (113) is fixedly connected to the output end of the first conveying motor (112). The conveying auger (113) is rotatably connected to the conveying fixed bracket (110). The bottom of the meshing main gear (106) is rotatably connected to a first support plate (114). The fixed top plate (131) is rotatably connected to the meshing main gear (106). The fixed top plate (131) is rotatably connected to the meshing external gear ring (104).

3. The sludge dewatering and drying equipment according to claim 2, characterized in that: A connecting ring (115) is fixedly installed at the bottom of the meshing internal toothed ring (105). A rotating ring (116) is rotatably connected to the bottom of the connecting ring (115). An outer centrifuge mesh cylinder (117) is fixedly installed on the inner side of the connecting ring (115). A plurality of cleaning connecting rods (118) are rotatably connected to the bottom of the rotating ring (116). A first cleaning scraper (119) is fixedly installed on the outer side of the cleaning connecting rods (118). The centrifuge box (101) is rotatably connected to the meshing external toothed ring (104).

4. The sludge dewatering and drying equipment according to claim 3, characterized in that: A heating and drying device (120) is fixedly installed on the outside of the centrifuge body (101). A number of second connecting pipes (121) are fixedly installed on the top of the heating and drying device (120). A rotating pipe (122) is fixedly installed at the end of the second connecting pipe (121). A drying screen (123) is fixedly installed at the bottom of the rotating pipe (122). A second cleaning scraper (124) is symmetrically installed on the outside of the drying screen (123).

5. The sludge dewatering and drying equipment according to claim 4, characterized in that: The centrifuge body (101) has an outer filter ring (125) threadedly connected to the inner side of its bottom. An inner filter ring (126) is rotatably connected to the inner side of the outer filter ring (125). The inner filter ring (126) is threadedly connected to the outer centrifuge mesh cylinder (117). The bottom of the cleaning connecting rod (118) and the drying mesh cylinder (123) are both fixedly installed with connecting cylinders (127). The connecting cylinders (127) are slidably connected to the outer filter ring (125) and the inner filter ring (126) respectively. A fixing block (128) is fixedly installed at the bottom of the connecting cylinder (127). A locking nut (129) is provided at the bottom of the fixing block (128).

6. The sludge dewatering and drying equipment according to claim 5, characterized in that: A locking bolt (130) is fixedly installed on the top of the locking nut (129), and the locking bolt (130) is threadedly connected to the connecting cylinder (127). A support ring (132) is fixedly installed on the bottom of the centrifuge body (101) near the heating and drying equipment (120), and support legs (133) are fixedly installed around the bottom of the support ring (132).

7. The sludge dewatering and drying equipment according to claim 1, characterized in that: The sludge filtration mechanism (2) includes a filter box (201), a connecting bucket (202) is fixedly installed at the bottom of the filter box (201), the connecting bucket (202) is fixedly installed on the top of the fixed top plate (131), the connecting bucket (202) is rotatably connected to the first connecting pipe (108), a collection box (203) is fixedly installed on both sides of the filter box (201), and a connecting hinge (204) is symmetrically rotatably connected to the top of the filter box (201) near the top of the filter box (201), and a box door (205) is rotatably connected to the outer side of the connecting hinge (204) on both sides.

8. The sludge dewatering and drying equipment according to claim 7, characterized in that: The conveying filter bracket (206) is fixedly installed inside the filter box (201). Limiting baffles (207) are symmetrically installed on both sides of the inside of the conveying filter bracket (206). A conveying chain (208) is slidably connected between the two limiting baffles (207). Several conveying sprockets (209) are meshed inside the conveying chain (208). A second conveying motor (210) is fixedly installed on the outside of the conveying filter bracket (206). The output end of the second conveying motor (210) is fixedly connected to the conveying sprockets (209). A conveying roller (211) is fixedly connected between the two conveying sprockets (209). A sprocket limiting cover (212) is fixedly installed on one side of the top of the filter box (201). A cleaning motor (213) is fixedly installed on one side of the inside of the sprocket limiting cover (212).

9. The sludge dewatering and drying equipment according to claim 8, characterized in that: The output end of the cleaning motor (213) is fixedly connected to a sprocket drive assembly (214). Cleaning threaded rods (215) are symmetrically installed on the outer side of the sprocket drive assembly (214). Cleaning threaded sleeves (216) are threadedly connected to the outer side of each of the two cleaning threaded rods (215). Cleaning connecting plates (217) are fixedly installed at the bottom of the two cleaning threaded sleeves (216). Push rods (218) are symmetrically installed on both sides of the cleaning connecting plate (217). Several spring assemblies (219) are fixedly installed at the bottom of the cleaning connecting plate (217). Cross cleaning blocks (220) are fixedly installed at the bottom of the spring assemblies (219). Threaded rod protective covers (221) are fixedly installed on the outer side of the filter box (201) near the cleaning threaded rods (215).

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