Sludge treatment drying device

Abstract

This invention provides a sludge drying device, including a drying chamber assembly and a pre-dewatering mechanism. The drying chamber assembly includes a main frame, an upper conveyor frame, a lower conveyor frame, and an upper support. The upper support is fixedly connected to one side of the upper surface of the main frame, the lower conveyor frame is installed at the bottom of the inner side wall of the upper support, and the upper conveyor frame is installed at the top of the lower conveyor frame. This invention uses a drive mechanism to drive the pre-dewatering mechanism to convey the sludge requiring drying. During conveying, the pre-dewatering mechanism squeezes and dewaters the sludge to initially reduce its moisture content. Then, the pre-dewatering mechanism, in conjunction with a granulation mechanism, squeezes and granulates the sludge for rapid subsequent drying. Furthermore, this invention has a high degree of overall structural integration and close connections between its components, effectively reducing the overall space occupied by the equipment and saving on operating costs.

Description

Technical Field

[0001] This invention relates to a sludge drying device, specifically a sludge drying device for sludge treatment, and belongs to the field of sludge treatment technology. Background Technology

[0002] Sludge drying refers to the process of reducing the moisture content of sludge through physical or chemical methods, transforming it from a liquid or semi-solid state to a solid state. It is an indispensable part of wastewater treatment, reducing sludge volume and weight for easier transportation; killing pathogens, parasites, and bacteria in the sludge to reduce the risk of disease transmission; and stabilizing and rendering the sludge harmless. Dried sludge can be used as fuel or as raw material for fertilizers, building materials, and other products, realizing resource reuse. Sludge drying is of great significance in promoting environmental protection, resource recycling, urban sanitation improvement, and economic development.

[0003] A Chinese patent entitled "A Low-Temperature Sludge Drying System and Method" (publication number CN114751618A) discloses a low-temperature sludge drying technology. This technology uses compressed air as the air source, employing a vortex tube to convert normal compressed air into a cold air source (below -20℃) and a hot air source (not below 100℃). The air source is readily available, and the energy is clean, safe, and pollution-free. The sludge is first completely frozen by the cold air source, and then heated and preliminarily dewatered by the hot air source. The hot sludge then enters a plate and frame filter press heated by the hot air source for further dewatering. However, while this system boasts high energy utilization, high drying efficiency, and low cost with high returns, the various devices within the system are relatively independent, leading to a high overall system cost. Furthermore, the system cannot effectively recover the water vapor generated during the heating and dewatering process, posing a risk of environmental pollution.

[0004] A Chinese patent titled "A Dehumidification and Dewatering Device for Low-Temperature Drying of Sludge" (publication number CN215667687U) discloses a dehumidification and dewatering technology for low-temperature drying of sludge. An air compressor injects air into a vortex chamber through an outlet pipe. The vortex chamber discharges hot air through a hot air pipe and cold air through a cold air pipe, guiding it into a cooling ring. The hot air pipe then injects hot air into a heat dissipation plate through a conduit. The heat dissipates heat, dewatering the sludge on the plate. Water vapor from the sludge enters a recovery pipe along the shell. As the water vapor passes through the cooling ring, it liquefies and falls into a collection tank. However, while this device can utilize the cold air generated by the vortex chamber to recover water vapor, its overall structure is too simple, lacking sludge pretreatment, resulting in low drying efficiency and low water vapor recovery efficiency.

[0005] Therefore, a sludge drying device for sludge treatment is proposed. Summary of the Invention

[0006] In view of this, the present invention provides a sludge drying device for sludge treatment to solve or alleviate the technical problems existing in the prior art, or at least provide a beneficial alternative.

[0007] The technical solution of this invention is implemented as follows: a sludge drying device, including a drying chamber assembly and a pre-dewatering mechanism, wherein the drying chamber assembly includes a main frame, an upper conveying frame, a lower conveying frame and an upper support.

[0008] The upper support is fixedly connected to one side of the upper surface of the main frame. The lower conveyor is installed at the bottom of the inner side wall of the upper support. The upper conveyor is installed at the top of the lower conveyor. The pre-dehydration mechanism is installed inside the upper conveyor. A drive mechanism is installed on one side of the upper surface of the upper support. A drying conveyor is installed inside the main frame. An air-type drying mechanism is installed on one side of the main frame. A granulation mechanism is installed on one side of the pre-dehydration mechanism. A pre-cooling conveyor is installed inside the lower conveyor. A water vapor recovery mechanism is installed on the other side of the upper surface of the main frame.

[0009] The pre-dewatering mechanism is used to squeeze and dewater the sludge, and works in conjunction with the granulation mechanism to granulate the dewatered sludge.

[0010] The air-type drying mechanism is used to inject cold air and hot air into the interior of the lower conveyor frame and the main frame respectively, so as to cooperate with the pre-cooling conveyor mechanism to pre-cool the sludge particles, and cooperate with the drying conveyor mechanism to heat and dry the sludge particles after pre-cooling.

[0011] The water vapor recovery mechanism is used to extract the water vapor generated by heating and drying the sludge, forming a spiral airflow, and in conjunction with the used cold air in the lower conveyor frame, the water vapor in the spiral airflow is liquefied upon cooling.

[0012] More preferably, the pre-dehydration mechanism includes a filter cylinder, a first auger column, a conical cylinder, a cylindrical frame, and several breathable steel filter plates;

[0013] The filter cylinder is fixedly connected to one side of the inner wall of the upper conveyor frame, the cylindrical frame is fixedly connected to the other side of the inner wall of the upper conveyor frame, the conical cylinder is connected between the filter cylinder and the cylindrical frame, the first auger column is rotatably connected to the inner wall of the filter cylinder, the conical cylinder and the cylindrical frame, and several of the permeable steel filter plates are installed on the inner wall of the cylindrical frame near the conical cylinder.

[0014] More preferably, the granulation mechanism includes a support frame, a disc frame, a sleeve frame, several scrapers, several extrusion holes, a guide frame, a pressure column, and a spring;

[0015] The supporting frame is fixedly connected to the end of the cylindrical frame away from the conical cylinder. The disc frame is rotatably connected to one side of the supporting frame. One end of the first auger column extends to one side of the upper conveying frame and is fixedly connected to the inner side wall of the disc frame. The sleeve frame is sleeved on the outer side wall of the cylindrical frame. Several scrapers are fixedly connected between the disc frame and the sleeve frame. Several extrusion holes are opened on one side of the outer side wall of the cylindrical frame. The guide frame is fixedly connected to one side of the supporting frame. One side of the outer side wall of the first auger column is rotatably connected to the inner side wall of the supporting frame and the guide frame. The pressure-bearing column is slidably connected between the inner side wall of the cylindrical frame and the outer side wall of the guide frame. One end of the spring is fixedly connected to the inner side wall of the pressure-bearing column, and the other end of the spring is fixedly connected to one side of the guide frame.

[0016] More preferably, the precooling conveying mechanism includes a third auger, a cooling inner cylinder, a fabric hopper, a precooling chamber, and a connecting frame;

[0017] The cooling inner cylinder is fixedly connected to one side of the inner wall of the lower conveyor frame. The precooling chamber is opened between the outer wall of the cooling inner cylinder and the inner wall of the lower conveyor frame. The third auger is rotatably connected to the inner wall of the lower conveyor frame and the cooling inner cylinder. The connecting frame is installed at one end of the upper conveyor frame and the lower conveyor frame. The fabric hopper is connected between the lower conveyor frame and the main frame.

[0018] More preferably, the drive mechanism includes a geared motor, a first pulley, a second pulley, a first transmission belt, a third pulley, a second transmission belt, and gears;

[0019] The geared motor is mounted on one side of the upper surface of the upper support. The first pulley is fixedly connected to the output shaft of the geared motor. The second pulley is rotatably connected to one side of the upper conveyor frame. One end of the second pulley is fixedly connected to one end of the first auger column. The first transmission belt is sleeved on the outer side wall of the first and second pulleys. The third pulley is rotatably connected to one side of the lower conveyor frame. The second transmission belt is sleeved on the outer side wall of the second and third pulleys. The outer side wall of the gear meshes with one side of the outer side wall of the third pulley. One end of the third auger penetrates the inner side wall of the lower conveyor frame and is fixedly connected to one end of the gear.

[0020] More preferably, the drying conveying mechanism includes an inner support, several conveyor belts, several rotating rollers, and several second motors;

[0021] The inner support is installed on the inner side wall of the main frame, the several conveyor belts are arranged alternately on the inner side wall of the inner support, the several rotating rollers are rotatably connected to the inner side wall of the inner support, the several conveyor belts respectively cover the outer side walls of two horizontally arranged rotating rollers, the several second motors are installed on one side of the inner support, and the output shafts of the several second motors are respectively fixedly connected to one end of the several rotating rollers.

[0022] More preferably, the air-type drying mechanism includes an air compressor, several air supply pipes, several vortex pipes, several cold supply pipes, several warm supply pipes, and several air distribution pipe racks;

[0023] The air compressor is installed on one side of the main frame. One end of each of the plurality of air supply pipes is connected to the exhaust port of the air compressor. Each of the plurality of vortex tubes is installed in the middle of one side of the main frame. The other end of each of the plurality of air supply pipes is connected to the air inlet of each of the plurality of vortex tubes. One end of each of the plurality of cold supply pipes is connected to the cold air end of each of the plurality of vortex tubes. The other end of each of the plurality of cold supply pipes is connected to the precooling chamber. One end of each of the plurality of warm supply pipes is connected to the hot air end of each of the plurality of vortex tubes. Each of the plurality of air distribution pipe frames is installed in the inner support. The other end of each of the plurality of warm supply pipes is connected to one side of each of the plurality of air distribution pipe frames.

[0024] More preferably, a feeding mechanism is installed on one side of the main frame, the feeding mechanism including a side support, a feeding hopper, a conveying pipe, a third motor, a second auger column and a discharge pipe;

[0025] The side support is installed on one side of the main frame, the feeding hopper is installed on one side of the side support, the conveying pipe is fixedly connected to the inner side wall of the side support, the third motor is installed at one end of the conveying pipe, the second auger column is rotatably connected to the inner side wall of the side support, the output shaft of the third motor is fixedly connected to one end of the second auger column, one side of the feeding hopper is connected to the bottom of the outer side wall of the conveying pipe, one end of the discharge pipe is connected to the top of the outer side wall of the conveying pipe, and the other end of the discharge pipe is connected to the interior of the upper conveying frame.

[0026] More preferably, the water vapor recovery mechanism includes a recovery box, a conical recovery cylinder, a spiral frame, an exhaust filter, a steam transmission pipe, an exhaust fan, and a cooling pipe;

[0027] The recycling bin is installed on one side of the upper surface of the main frame. The conical recycling cylinder is fixedly connected to the middle of the inner wall of the recycling bin. The spiral frame is fixedly connected to the inner wall of the conical recycling cylinder. The exhaust filter is installed on the middle of the inner wall of the conical recycling cylinder. The exhaust fan is installed on one side of the inner support. One end of the steam pipe is connected to the exhaust port of the exhaust fan. The other end of the steam pipe passes through the inner wall of the recycling bin and is connected to the top of the outer wall of the conical recycling cylinder. One end of the cooling pipe is connected to the bottom of the outer wall of the recycling bin. The other end of the cooling pipe is connected to the pre-cooling chamber.

[0028] More preferably, a protective cover is installed in the middle of the upper surface of the recycling bin, an air guide pipe is connected to the top side of the outer wall of the recycling bin, a skid-mounted base frame is installed at the bottom of the main frame, a first wastewater pipe is connected to one side of the upper conveyor frame, a second wastewater pipe is connected to the bottom of the outer wall of the conical recycling cylinder, and the other end of the second wastewater pipe penetrates the outer wall of the recycling bin.

[0029] The embodiments of the present invention have the following advantages due to the adoption of the above technical solutions:

[0030] This invention uses a drive mechanism to drive a pre-dewatering mechanism to transport sludge that needs to be dried. During the transport process, the pre-dewatering mechanism squeezes and dewaters the sludge to initially reduce its water content. Then, the pre-dewatering mechanism, in conjunction with a granulation mechanism, squeezes and granulates the sludge so that it can be quickly dried in the subsequent process. Furthermore, this invention has a high degree of overall structural integration and close connections between its components, effectively reducing the space occupied by the equipment and saving on operating costs.

[0031] This invention uses an air-type drying mechanism to inject cold and hot air into the lower conveyor frame and the main frame respectively, so as to cooperate with the pre-cooling conveyor mechanism to pre-cool the sludge particles. Then, the pre-cooling conveyor mechanism uses the power of the drive mechanism to push the pre-cooled sludge particles into the main frame, so that the sludge particles are transported by the drying conveyor mechanism while the injected hot air performs rapid drying treatment on the sludge particles.

[0032] This invention extracts the water vapor generated by heating inside the main frame through a water vapor recovery mechanism, forming a spiral airflow. Then, the used cold air inside the lower conveyor frame is discharged through the water vapor recovery mechanism, ensuring the normal circulation of cold air inside the lower conveyor frame. At the same time, the cold air is used to liquefy the water vapor in the spiral airflow inside the water vapor recovery mechanism, so as to liquefy and recover the water vapor, and effectively improve the efficiency of water vapor recovery.

[0033] The above overview is for illustrative purposes only and is not intended to limit the scope of the invention in any way. Further aspects, embodiments, and features of the invention will become apparent from the accompanying drawings and the following detailed description, in addition to the illustrative aspects, embodiments, and features described above. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a structural diagram of the present invention;

[0036] Figure 2 This is a cross-sectional view of the structure from a first perspective of the present invention;

[0037] Figure 3 This is a side view of the structure of the present invention;

[0038] Figure 4 This is a cross-sectional view of the side support structure of the present invention;

[0039] Figure 5 This is a cross-sectional view of the structure from a second perspective of the present invention;

[0040] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of area A structure;

[0041] Figure 7 For the present invention Figure 5 Enlarged schematic diagram of the structure of region B;

[0042] Figure 8 This is an axonometric view of the side bracket of the present invention;

[0043] Figure 9 This is an axonometric view of the bracket of the present invention;

[0044] Figure 10 This is an isometric view of the air compressor of the present invention;

[0045] Figure 11 This is a cross-sectional view of the internal support structure of the present invention.

[0046] Reference numerals: 1. Drying machine housing assembly; 2. Pre-dehydration mechanism; 3. Drive mechanism; 4. Drying conveying mechanism; 5. Air-type drying mechanism; 6. Feeding mechanism; 7. Granulation mechanism; 8. Pre-cooling conveying mechanism; 9. Water vapor recovery mechanism; 101. Main frame; 102. Upper conveyor frame; 103. Lower conveyor frame; 104. Upper support; 201. Filter cylinder; 202. First auger column; 203. Conical cylinder; 204. Cylindrical frame; 205. Breathable steel filter plate; 301. Gear motor; 302. First pulley; 303. Second pulley; 304. First transmission belt; 305. Third pulley; 306. Second transmission belt; 307. Gear; 401. Inner support; 402. Conveyor belt; 403. Rotary roller; 404. Second motor; 501. Air compressor; 502. Air supply pipe; 503. Vortex tube; 504. Cooling pipe; 505. Heating pipe; 506. Air distribution pipe support; 601. Side support; 602. Feeding hopper; 603. Feeding pipe; 604. Third motor; 605. Second auger column; 606. Discharge pipe; 701. Bearing frame; 702. Disc frame; 703. Sleeve frame; 704. Scraper; 705. Extrusion orifice; 706. Guide frame; 707. Pressure-bearing column; 708. Spring; 801. First Three-screw auger; 802, cooling inner cylinder; 803, cloth hopper; 804, pre-cooling chamber; 805, connecting frame; 901, recovery box; 902, conical recovery cylinder; 903, spiral frame; 904, exhaust filter cartridge; 905, steam pipe; 906, exhaust fan; 907, cooling pipe; 911, protective cover; 912, air guide pipe; 913, skid-mounted base frame; 914, first wastewater pipe; 915, second wastewater pipe. Detailed Implementation

[0047] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0048] It is important to note that terms such as "first," "second," "symmetric," and "array" are used only to distinguish between descriptive and positional descriptions and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified with terms such as "first" or "symmetric" may explicitly or implicitly include one or more of that feature; similarly, when the quantity of certain features is not limited by words such as "two" or "three," it should be noted that such features also explicitly or implicitly include one or more features.

[0049] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0050] like Figures 1-11 As shown, this embodiment of the invention provides a sludge drying device, including a drying chamber assembly 1 and a pre-dewatering mechanism 2. The drying chamber assembly 1 includes a main frame 101, an upper conveying frame 102, a lower conveying frame 103 and an upper support 104.

[0051] The upper support 104 is fixedly connected to one side of the upper surface of the main frame 101. The lower conveyor frame 103 is installed at the bottom of the inner side wall of the upper support 104. The upper conveyor frame 102 is installed at the top of the lower conveyor frame 103. The pre-dehydration mechanism 2 is installed inside the upper conveyor frame 102. The drive mechanism 3 is installed on one side of the upper surface of the upper support 104. The drying conveyor mechanism 4 is installed inside the main frame 101. The air drying mechanism 5 is installed on one side of the main frame 101. The granulation mechanism 7 is installed on one side of the pre-dehydration mechanism 2. The pre-cooling conveyor mechanism 8 is installed inside the lower conveyor frame 103. The water vapor recovery mechanism 9 is installed on the other side of the upper surface of the main frame 101.

[0052] Among them, the pre-dewatering unit 2 is used to squeeze and dewater the sludge, and works with the granulation unit 7 to granulate the dewatered sludge;

[0053] Among them, the air-type drying mechanism 5 is used to inject cold air and hot air into the lower conveyor frame 103 and the main frame 101 respectively, so as to cooperate with the pre-cooling conveyor mechanism 8 to pre-cool the sludge particles, and cooperate with the drying conveyor mechanism 4 to heat and dry the sludge particles after pre-cooling.

[0054] The water vapor recovery mechanism 9 is used to extract the water vapor generated by heating and drying the sludge, so that it forms a spiral airflow, and works with the used cold air in the lower conveyor frame 103 to liquefy the water vapor in the spiral airflow.

[0055] In one embodiment, the pre-dehydration mechanism 2 includes a filter cylinder 201, a first auger column 202, a conical cylinder 203, a cylindrical frame 204, and several breathable steel filter plates 205.

[0056] The filter cylinder 201 is fixedly connected to one side of the inner wall of the upper conveyor frame 102, the cylindrical frame 204 is fixedly connected to the other side of the inner wall of the upper conveyor frame 102, the conical cylinder 203 is connected between the filter cylinder 201 and the cylindrical frame 204, the first auger column 202 is rotatably connected to the inner wall of the filter cylinder 201, the conical cylinder 203 and the cylindrical frame 204, and several breathable steel filter plates 205 are installed on the inner wall of the cylindrical frame 204 near the conical cylinder 203.

[0057] The sludge is pushed into the upper conveyor frame 102 by the rotating first auger column 202. Then, the water in the sludge is initially filtered out by the set water filter cylinder 201. Then, the sludge pushed out of the water filter cylinder 201 is introduced into the cylindrical frame 204 by the conical cylinder 203. The sludge pushed into the cylindrical frame 204 is blocked by the granulation mechanism 7, so that the sludge is collected on one side of the granulation mechanism 7 and squeezed. Then, the water squeezed out of the sludge is filtered by the set air-permeable steel filter plate 205, and the sludge particles carried in the water are intercepted so that the sludge is dewatered by squeezing.

[0058] In one embodiment, the granulation mechanism 7 includes a support frame 701, a disc frame 702, a sleeve frame 703, a plurality of scrapers 704, a plurality of extrusion holes 705, a guide frame 706, a pressure-bearing column 707, and a spring 708.

[0059] The support frame 701 is fixedly connected to the end of the cylindrical frame 204 away from the conical cylinder 203. The disc frame 702 is rotatably connected to one side of the support frame 701. One end of the first auger column 202 extends to one side of the upper conveyor frame 102 and is fixedly connected to the inner wall of the disc frame 702. The sleeve frame 703 is sleeved on the outer wall of the cylindrical frame 204. Several scrapers 704 are fixedly connected between the disc frame 702 and the sleeve frame 703. Several extrusion holes 705 are opened in the cylinder. On one side of the outer wall of the cylindrical frame 204, the guide frame 706 is fixedly connected to one side of the support frame 701. The outer wall of the first auger column 202 is rotatably connected to the inner wall of the support frame 701 and the guide frame 706. The pressure column 707 is slidably connected between the inner wall of the cylindrical frame 204 and the outer wall of the guide frame 706. One end of the spring 708 is fixedly connected to the inner wall of the pressure column 707, and the other end of the spring 708 is fixedly connected to one side of the guide frame 706.

[0060] The pressure column 707 slides along the guide frame 706 under pressure, and drives the spring 708 to compress. When the pressure column 707 moves to one side of the extrusion hole 705, the dewatered sludge is squeezed out from the extrusion hole 705 by using pressure. At the same time, the rotating first auger column 202 drives the scraper 704 to rotate through the disc frame 702. The rotating scraper 704 cuts the sludge strips squeezed out from the extrusion hole 705 to form sludge particles.

[0061] In one embodiment, the precooling conveying mechanism 8 includes a third auger 801, a cooling inner cylinder 802, a cloth hopper 803, a precooling chamber 804, and a connecting frame 805.

[0062] The cooling inner cylinder 802 is fixedly connected to one side of the inner wall of the lower conveyor frame 103. The pre-cooling chamber 804 is opened between the outer wall of the cooling inner cylinder 802 and the inner wall of the lower conveyor frame 103. The third auger 801 is rotatably connected to the inner wall of the lower conveyor frame 103 and the inner wall of the cooling inner cylinder 802. The connecting frame 805 is installed at one end of the upper conveyor frame 102 and the lower conveyor frame 103. The cloth hopper 803 is connected between the lower conveyor frame 103 and the main frame 101.

[0063] The rotating third auger 801 pushes the sludge particles falling from the connecting frame 805 into the cooling inner cylinder 802, so that the cooling inner cylinder 802 can quickly absorb the heat of the sludge particles and pre-freeze them. Then, the pre-frozen sludge particles in the cooling inner cylinder 802 are introduced into the main frame 101 through the set cloth hopper 803.

[0064] In one embodiment, the drive mechanism 3 includes a geared motor 301, a first pulley 302, a second pulley 303, a first transmission belt 304, a third pulley 305, a second transmission belt 306, and a gear 307.

[0065] The geared motor 301 is mounted on one side of the upper surface of the upper bracket 104. The first pulley 302 is fixedly connected to the output shaft of the geared motor 301. The second pulley 303 is rotatably connected to one side of the upper conveyor frame 102. One end of the second pulley 303 is fixedly connected to one end of the first auger column 202. The first transmission belt 304 is sleeved on the outer side wall of the first pulley 302 and the second pulley 303. The third pulley 305 is rotatably connected to one side of the lower conveyor frame 103. The second transmission belt 306 is sleeved on the outer side wall of the second pulley 303 and the third pulley 305. The outer side wall of the gear 307 is meshed with one side of the outer side wall of the third pulley 305. One end of the third auger 801 penetrates the inner side wall of the lower conveyor frame 103 and is fixedly connected to one end of the gear 307.

[0066] The output shaft of the geared motor 301 drives the first pulley 302 to rotate. The rotating first pulley 302 drives the second pulley 303 to rotate via the first transmission belt 304. The rotating second pulley 303 drives the first auger column 202 and the second transmission belt 306 to move. The moving second transmission belt 306 drives the third pulley 305 to rotate. The rotating third pulley 305 drives the gear 307 to rotate via its toothed teeth.

[0067] In one embodiment, the drying conveying mechanism 4 includes an inner support 401, a plurality of conveyor belts 402, a plurality of rotating rollers 403, and a plurality of second motors 404;

[0068] The inner support 401 is installed on the inner side wall of the main frame 101. Several conveyor belts 402 are arranged alternately on the inner side wall of the inner support 401. Several rotating rollers 403 are rotatably connected to the inner side wall of the inner support 401. Several conveyor belts 402 respectively cover the outer side walls of two horizontally arranged rotating rollers 403. Several second motors 404 are installed on one side of the inner support 401. The output shafts of several second motors 404 are respectively fixedly connected to one end of several rotating rollers 403.

[0069] The output shaft of the second motor 404 drives the rotating roller 403 to rotate, and the rotating roller 403 drives the conveyor belt 402 to rotate, and the rotating conveyor belt 402 transports the sludge particles.

[0070] In one embodiment, the air-type drying mechanism 5 includes an air compressor 501, a plurality of air supply pipes 502, a plurality of vortex pipes 503, a plurality of cold supply pipes 504, a plurality of warm supply pipes 505, and a plurality of air distribution pipe racks 506.

[0071] Among them, the air compressor 501 is installed on one side of the main frame 101, one end of each of the several air supply pipes 502 is connected to the exhaust port of the air compressor 501, several vortex pipes 503 are installed in the middle of one side of the main frame 101, the other end of each of the several air supply pipes 502 is connected to the air inlet of each of the several vortex pipes 503, one end of each of the several cold supply pipes 504 is connected to the cold air end of each of the several vortex pipes 503, the other end of each of the several cold supply pipes 504 is connected to the precooling chamber 804, one end of each of the several warm supply pipes 505 is connected to the hot air end of each of the several vortex pipes 503, several air distribution pipe racks 506 are installed in the inner support 401, and the other end of each of the several warm supply pipes 505 is connected to one side of each of the several air distribution pipe racks 506.

[0072] High-pressure air is injected into the inlet of the vortex tube 503 via the air compressor 501 and the air supply pipe 502. The vortex tube 503 then divides the airflow into two streams, one cold and one hot. The cold airflow from the cold end of the vortex tube 503 is directed to the pre-cooling chamber 804 via the cold air supply pipe 504, so that the cold airflow can absorb the heat of the cooling inner cylinder 802 and cool it down. Then, the hot airflow from the hot end of the vortex tube 503 is directed to the air distribution frame 506 via the heating pipe 505, so that the hot airflow can be evenly sprayed into the interior of the inner support 401 to preheat the interior of the inner support 401.

[0073] In one embodiment, a feeding mechanism 6 is installed on one side of the main frame 101. The feeding mechanism 6 includes a side support 601, a feeding hopper 602, a conveying pipe 603, a third motor 604, a second auger column 605, and a discharge pipe 606.

[0074] The side support 601 is installed on one side of the main frame 101, the feeding hopper 602 is installed on one side of the side support 601, the conveying pipe 603 is fixedly connected to the inner wall of the side support 601, the third motor 604 is installed at one end of the conveying pipe 603, the second auger column 605 is rotatably connected to the inner wall of the side support 601, the output shaft of the third motor 604 is fixedly connected to one end of the second auger column 605, one side of the feeding hopper 602 is connected to the bottom of the outer wall of the conveying pipe 603, one end of the discharge pipe 606 is connected to the top of the outer wall of the conveying pipe 603, and the other end of the discharge pipe 606 is connected to the interior of the upper conveyor frame 102.

[0075] The output shaft of the third motor 604 drives the second auger column 605 to rotate. The rotating second auger column 605 pushes the sludge in the feed hopper 602 into the conveying pipe 603 and lifts it. Then, the sludge lifted in the conveying pipe 603 is discharged into the upper conveying frame 102 through the discharge pipe 606.

[0076] In one embodiment, the water vapor recovery mechanism 9 includes a recovery box 901, a conical recovery cylinder 902, a spiral frame 903, an exhaust filter 904, a steam transmission pipe 905, an exhaust fan 906, and a cooling pipe 907.

[0077] The recovery box 901 is installed on one side of the upper surface of the main frame 101. The conical recovery cylinder 902 is fixedly connected to the middle of the inner wall of the recovery box 901. The spiral frame 903 is fixedly connected to the inner wall of the conical recovery cylinder 902. The exhaust filter 904 is installed on the middle of the inner wall of the conical recovery cylinder 902. The exhaust fan 906 is installed on one side of the inner support 401. One end of the steam pipe 905 is connected to the exhaust port of the exhaust fan 906. The other end of the steam pipe 905 passes through the inner wall of the recovery box 901 and is connected to the top of the outer wall of the conical recovery cylinder 902. One end of the cooling pipe 907 is connected to the bottom of the outer wall of the recovery box 901. The other end of the cooling pipe 907 is connected to the pre-cooling chamber 804.

[0078] A protective cover 911 is installed in the middle of the upper surface of the recycling bin 901. A vent pipe 912 is connected to the top side of the outer wall of the recycling bin 901. A skid-mounted base frame 913 is installed at the bottom of the main frame 101. A first wastewater pipe 914 is connected to one side of the upper conveyor frame 102. A second wastewater pipe 915 is connected to the bottom of the outer wall of the conical recycling cylinder 902. The other end of the second wastewater pipe 915 penetrates the outer wall of the recycling bin 901.

[0079] The water vapor in the inner support 401 is extracted by the exhaust fan 906 and injected into the conical recovery cylinder 902 through the steam pipe 905. Then, the water vapor forms a spiral airflow in the conical recovery cylinder 902 through the spiral frame 903 and the exhaust filter 904. The used cold air in the precooling chamber 804 is introduced into the recovery box 901 through the cooling pipe 907 to cool the conical recovery cylinder 902 so that the water vapor in the spiral airflow can come into contact with the conical recovery cylinder 902 and liquefy upon contact with the cold air.

[0080] In operation, the invention works as follows: The entire device is installed in the designated location according to actual needs. When sludge drying is required, firstly, high-pressure air is injected into the inlet of the vortex tube 503 via the air compressor 501 and air supply pipe 502. Then, the vortex tube 503 forces the incoming high-speed airflow tangentially into the vortex chamber, forming a free vortex. This creates friction between vortex layers with different angular velocities. The airflow at the center has the highest angular velocity. This friction transfers energy to the outer layers of airflow with lower angular velocities, causing the central layer to... The airflow temperature decreases, forming a cold airflow, while the outer airflow gains energy to form a hot airflow. Then, the cold airflow discharged from the cold end of the vortex tube 503 is guided to the pre-cooling chamber 804 through the cold air supply pipe 504, so that the cold airflow can absorb the heat of the cooling inner cylinder 802 and cool it down. Then, the hot airflow discharged from the hot end of the vortex tube 503 is guided to the air distribution pipe frame 506 through the heating pipe 505, so that the hot airflow can be evenly sprayed into the interior of the inner support 401 through the air distribution pipe frame 506 to preheat the interior of the inner support 401.

[0081] Once the cooling inner cylinder 802 has cooled down and the inner support 401 has been preheated, the sludge that needs to be dried is temporarily stored in the feeding hopper 602. Then, the output shaft of the third motor 604 drives the second auger column 605 to rotate. The rotating second auger column 605 pushes the sludge in the feeding hopper 602 into the conveying pipe 603 and lifts it. Then, the sludge lifted in the conveying pipe 603 is discharged into the upper conveying frame 102 through the discharge pipe 606 for sludge feeding.

[0082] After the feeding operation is completed, the output shaft of the reduction motor 301 drives the first pulley 302 to rotate. The rotating first pulley 302 drives the second pulley 303 to rotate via the first transmission belt 304. The rotating second pulley 303 drives the first auger column 202 and the second transmission belt 306 to move. The moving second transmission belt 306 drives the third pulley 305 to rotate. The rotating third pulley 305 drives the gear 307 to rotate via its toothed teeth. The rotating first auger column 202 pushes the sludge into the upper conveyor frame 102, and then the water in the sludge is initially filtered out by the filter cylinder 201. Then, the sludge pushed out of the filter cylinder 201 is guided into the cylindrical frame 204 by the conical cylinder 203. The sludge pushed into the cylindrical frame 204 is blocked by the pressure column 707, so that the sludge is collected on one side of the pressure column 707 and squeezed. Then, the water squeezed out of the sludge is filtered by the set air-permeable steel filter plate 205, and the sludge particles carried in the water are intercepted. In order to dewater the sludge by squeezing, the water content of the sludge is further reduced.

[0083] When the pressure at the bearing column 707 reaches the bearing limit of the spring 708, the bearing column 707 slides along the guide frame 706 under pressure, driving the spring 708 to compress. When the bearing column 707 moves to one side of the extrusion hole 705, the dewatered sludge is extruded from the extrusion hole 705 by using pressure. At the same time, the rotating first auger column 202 drives the scraper 704 to rotate through the disc frame 702. The rotating scraper 704 cuts the sludge strips extruded from the extrusion hole 705, forming... The sludge particles fall into the connecting frame 805 under the action of gravity. At the same time, the rotating gear 307 drives the third auger 801 to rotate. The rotating third auger 801 pushes the sludge particles falling from the connecting frame 805 into the cooling inner cylinder 802, so that the cooling inner cylinder 802 can quickly absorb the heat of the sludge particles and pre-freeze them. Then, the pre-frozen sludge particles in the cooling inner cylinder 802 are introduced into the main frame 101 and the inner support 401 through the set cloth hopper 803.

[0084] After the sludge particles enter the inner support 401, the output shaft of the second motor 404 drives the rotating roller 403 to rotate. The rotating roller 403 drives the conveyor belt 402 to rotate. The rotating conveyor belt 402 transports the sludge particles and uses staggered conveyor belts 402 with different directions of movement to reciprocate the sludge particles, thereby increasing the residence time of the sludge particles in the main frame 101. At the same time, the hot airflow discharged from the air distribution pipe frame 506 heats and dries the sludge particles, causing the residual moisture in the sludge particles to vaporize. Then, the dried sludge particles are discharged through the conveyor belt 402 located at the bottom of the inner support 401 for centralized collection.

[0085] When the sludge in the inner support 401 is heated and dried to generate water vapor, the water vapor in the inner support 401 is extracted by the exhaust fan 906 and injected into the conical recovery cylinder 902 through the steam pipe 905. Then, the spiral frame 903 and the exhaust filter 904 make the water vapor form a spiral airflow in the conical recovery cylinder 902, so that the water vapor in the airflow can fully contact the inner wall of the conical recovery cylinder 902 by using centrifugal force. At the same time, the used cold air in the precooling chamber 804 is introduced into the recovery box 901 through the cooling pipe 907. Under the premise of ensuring the normal flow of cold air in the precooling chamber 804, the used cold airflow absorbs the heat of the conical recovery cylinder 902 to cool the conical recovery cylinder 902 so that the water vapor in the airflow liquefies upon contact with the cold air. Then, the treated air in the conical recovery cylinder 902 is discharged through the exhaust filter 904.

[0086] The second wastewater pipe 915 is used to discharge the condensate collected at the bottom of the conical recovery cylinder 902. The air guide pipe 912 is used to export the used cold air in the recovery box 901. The first wastewater pipe 914 is used to export the sewage separated in the upper conveyor frame 102. The protective cover 911 is used to prevent rainwater from directly entering the interior of the exhaust filter cartridge 904. The skid-mounted base frame 913 is used to skid-mount the entire dryer box assembly 1, pre-dehydration mechanism 2, drive mechanism 3, dryer conveying mechanism 4, air-type dryer mechanism 5, granulation mechanism 7, pre-cooling conveying mechanism 8, and water vapor recovery mechanism 9. The side bracket 601 is used to skid-mount the entire feeding mechanism 6, making the entire device easy to disassemble and assemble.

[0087] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A sludge treatment drier comprising a drier casing assembly and a pre-dewatering mechanism, characterized by, The drying chamber assembly includes a main frame, an upper conveyor frame, a lower conveyor frame, and an upper support frame; The upper support is fixedly connected to one side of the upper surface of the main frame. The lower conveyor is installed at the bottom of the inner side wall of the upper support. The upper conveyor is installed at the top of the lower conveyor. The pre-dehydration mechanism is installed inside the upper conveyor. A drive mechanism is installed on one side of the upper surface of the upper support. A drying conveyor is installed inside the main frame. An air-type drying mechanism is installed on one side of the main frame. A granulation mechanism is installed on one side of the pre-dehydration mechanism. A pre-cooling conveyor is installed inside the lower conveyor. A water vapor recovery mechanism is installed on the other side of the upper surface of the main frame. The pre-dewatering mechanism is used to squeeze and dewater the sludge, and works in conjunction with the granulation mechanism to granulate the dewatered sludge. The pre-dehydration mechanism includes a filter cylinder, a first auger column, a conical cylinder, a cylindrical frame, and several breathable steel filter plates; The filter cylinder is fixedly connected to one side of the inner wall of the upper conveyor frame, the cylindrical frame is fixedly connected to the other side of the inner wall of the upper conveyor frame, the conical cylinder is connected between the filter cylinder and the cylindrical frame, the first auger column is rotatably connected to the inner wall of the filter cylinder, the conical cylinder and the cylindrical frame, and a plurality of the permeable steel filter plates are installed on the inner wall of the cylindrical frame near the conical cylinder. The granulation mechanism includes a support frame, a disc frame, a sleeve frame, several scrapers, several extrusion holes, a guide frame, a pressure column, and a spring; The supporting frame is fixedly connected to the end of the cylindrical frame away from the conical cylinder. The disc frame is rotatably connected to one side of the supporting frame. One end of the first auger column extends to one side of the upper conveying frame and is fixedly connected to the inner side wall of the disc frame. The sleeve frame is sleeved on the outer side wall of the cylindrical frame. Several scrapers are fixedly connected between the disc frame and the sleeve frame. Several extrusion holes are opened on one side of the outer side wall of the cylindrical frame. The guide frame is fixedly connected to one side of the supporting frame. One side of the outer side wall of the first auger column is rotatably connected to the inner side wall of the supporting frame and the guide frame. The pressure column is slidably connected between the inner side wall of the cylindrical frame and the outer side wall of the guide frame. One end of the spring is fixedly connected to the inner side wall of the pressure column, and the other end of the spring is fixedly connected to one side of the guide frame. The air-type drying mechanism is used to inject cold air and hot air into the interior of the lower conveyor frame and the main frame respectively, so as to use the cold air in conjunction with the pre-cooling conveyor mechanism to pre-cool the sludge particles, and use the hot air in conjunction with the drying conveyor mechanism to heat and dry the sludge particles after pre-cooling. The water vapor recovery mechanism is used to extract the water vapor generated by heating and drying the sludge, forming a spiral airflow, and in conjunction with the used cold air in the lower conveyor frame, the water vapor in the spiral airflow is liquefied upon cooling.

2. The sludge drying device according to claim 1, characterized in that: The precooling conveying mechanism includes a third auger, a cooling inner cylinder, a fabric hopper, a precooling chamber, and a connecting frame; The cooling inner cylinder is fixedly connected to one side of the inner wall of the lower conveyor frame. The precooling chamber is opened between the outer wall of the cooling inner cylinder and the inner wall of the lower conveyor frame. The third auger is rotatably connected to the inner wall of the lower conveyor frame and the cooling inner cylinder. The connecting frame is installed at one end of the upper conveyor frame and the lower conveyor frame. The fabric hopper is connected between the lower conveyor frame and the main frame.

3. The sludge drying device according to claim 2, characterized in that: The drive mechanism includes a geared motor, a first pulley, a second pulley, a first transmission belt, a third pulley, a second transmission belt, and gears; The geared motor is mounted on one side of the upper surface of the upper support. The first pulley is fixedly connected to the output shaft of the geared motor. The second pulley is rotatably connected to one side of the upper conveyor frame. One end of the second pulley is fixedly connected to one end of the first auger column. The first transmission belt is sleeved on the outer side wall of the first and second pulleys. The third pulley is rotatably connected to one side of the lower conveyor frame. The second transmission belt is sleeved on the outer side wall of the second and third pulleys. The outer side wall of the gear meshes with one side of the outer side wall of the third pulley. One end of the third auger penetrates the inner side wall of the lower conveyor frame and is fixedly connected to one end of the gear.

4. The sludge drying device according to claim 2, characterized in that: The drying conveying mechanism includes an inner support, several conveyor belts, several rotating rollers, and several second motors; The inner support is installed on the inner side wall of the main frame, the several conveyor belts are arranged alternately on the inner side wall of the inner support, the several rotating rollers are rotatably connected to the inner side wall of the inner support, the several conveyor belts respectively cover the outer side walls of two horizontally arranged rotating rollers, the several second motors are installed on one side of the inner support, and the output shafts of the several second motors are respectively fixedly connected to one end of the several rotating rollers.

5. The sludge drying device according to claim 4, characterized in that: The air-type drying mechanism includes an air compressor, several air supply pipes, several vortex pipes, several cooling pipes, several heating pipes, and several air distribution pipe frames. The air compressor is installed on one side of the main frame. One end of each of the plurality of air supply pipes is connected to the exhaust port of the air compressor. Each of the plurality of vortex tubes is installed in the middle of one side of the main frame. The other end of each of the plurality of air supply pipes is connected to the air inlet of each of the plurality of vortex tubes. One end of each of the plurality of cold supply pipes is connected to the cold air end of each of the plurality of vortex tubes. The other end of each of the plurality of cold supply pipes is connected to the precooling chamber. One end of each of the plurality of warm supply pipes is connected to the hot air end of each of the plurality of vortex tubes. Each of the plurality of air distribution pipe frames is installed in the inner support. The other end of each of the plurality of warm supply pipes is connected to one side of each of the plurality of air distribution pipe frames.

6. The sludge drying device according to claim 1, characterized in that: A feeding mechanism is installed on one side of the main frame. The feeding mechanism includes a side support, a feeding hopper, a conveying pipe, a third motor, a second auger column, and a discharge pipe. The side support is installed on one side of the main frame, the feeding hopper is installed on one side of the side support, the conveying pipe is fixedly connected to the inner side wall of the side support, the third motor is installed at one end of the conveying pipe, the second auger column is rotatably connected to the inner side wall of the side support, the output shaft of the third motor is fixedly connected to one end of the second auger column, one side of the feeding hopper is connected to the bottom of the outer side wall of the conveying pipe, one end of the discharge pipe is connected to the top of the outer side wall of the conveying pipe, and the other end of the discharge pipe is connected to the interior of the upper conveying frame.

7. The sludge drying device according to claim 4, characterized in that: The water vapor recovery mechanism includes a recovery box, a conical recovery cylinder, a spiral frame, an exhaust filter, a steam transmission pipe, an exhaust fan, and a cooling pipe; The recycling bin is installed on one side of the upper surface of the main frame. The conical recycling cylinder is fixedly connected to the middle of the inner wall of the recycling bin. The spiral frame is fixedly connected to the inner wall of the conical recycling cylinder. The exhaust filter is installed on the middle of the inner wall of the conical recycling cylinder. The exhaust fan is installed on one side of the inner support. One end of the steam pipe is connected to the exhaust port of the exhaust fan. The other end of the steam pipe passes through the inner wall of the recycling bin and is connected to the top of the outer wall of the conical recycling cylinder. One end of the cooling pipe is connected to the bottom of the outer wall of the recycling bin. The other end of the cooling pipe is connected to the pre-cooling chamber.

8. The sludge drying device according to claim 7, characterized in that: A protective cover is installed on the middle of the upper surface of the recycling bin. An air duct is connected to the top side of the outer wall of the recycling bin. A skid-mounted base frame is installed at the bottom of the main frame. A first wastewater pipe is connected to one side of the upper conveyor frame. A second wastewater pipe is connected to the bottom of the outer wall of the conical recycling cylinder. The other end of the second wastewater pipe penetrates the outer wall of the recycling bin.

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