Equipment for drying biogas residues by using heat source

Abstract

The invention provides equipment for drying biogas residues through a heat source, and belongs to the technical field of biogas residue drying, the equipment comprises a box body component, a layered material conveying assembly, a thermal drying assembly, a feeding assembly, a material uniformizing assembly, an anti-blocking cleaning assembly and a material raking component, and a conveying channel which is composed of a plurality of groups of material conveying belts and is communicated end to end is arranged in a drying box body; an arc-shaped cover is arranged at the top end of each group of conveying belts, air guide grooves are formed between the arc-shaped covers connected in a matched mode, and hot air circulation can be formed between the channels formed by the multiple groups of conveying belts and the arc-shaped covers through centrifugal fans and electric heating wires; the auger between the bottom hopper and the top hopper can lift the biogas residues from a low position to a high position and transfer the biogas residues to the conveying belt at the top end, and synchronously, the auger is in transmission connection with the material uniformizing shaft and the harrow frame, so that the biogas residues can be uniformly conveyed and flatly laid from the top hopper to the conveying belt, and the biogas residues are efficiently dried in an energy-saving manner; and meanwhile, the anti-blocking cleaning assembly can be driven to clean the outside of the feeding channel.

Description

Technical Field

[0001] The present invention relates to the technical field of biogas residue drying, and in particular to a device for drying biogas residue using a heat source. Background Art

[0002] The residues from garbage disposal or sewage treatment are dehydrated to form biogas residues, which are rich in organic matter and nutrients. However, due to its high moisture content (over 70%), it is difficult to directly use or transport, and cannot be effectively recycled as a resource. Therefore, further dehydration and drying of biogas residues is a key step in improving its resource utilization efficiency. This not only reduces its volume and facilitates storage and transportation, but also allows for easy transportation for application in various scenarios, such as organic fertilizer preparation and fuel utilization.

[0003] The current mainstream dewatering technology is mechanical, primarily consisting of centrifugal dewatering and mechanical extrusion dewatering. Centrifugal dewatering relies on the centrifugal force generated by high-speed rotation to achieve solid-liquid separation, which is subject to high energy consumption and severe equipment wear. It is also limited in its ability to remove colloidal water, resulting in a high water content in the biogas residue. Mechanical extrusion, on the other hand, removes water through the mechanical compression of a filter and a screw shaft. However, the equipment is susceptible to clogging by biogas residue fibers, requiring frequent downtime for maintenance, and its treatment efficiency significantly decreases with operating time.

[0004] The current mainstream methods of sludge drying include low-temperature drying and microwave drying. Low-temperature drying takes a long time and requires a longer drying time and a larger working space; microwave drying equipment is relatively expensive, and microwave radiation poses potential risks to human health, requiring strict safety control. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for drying biogas residue using a heat source. It is based on an array of conveyor belts connected end to end and arranged in the inner cavity of a drying box. In conjunction with the use of thermal drying components and loading components, it can form a cyclic multiple drying treatment process after the biogas residue is put into the bottom hopper at a low position. Combined with the use of a material leveling component and an anti-blocking cleaning component, the efficiency of biogas residue drying can be better improved.

[0006] The object of the present invention is achieved through such a technical solution, which is a device for drying biogas residue using a heat source, comprising a box component, a layered feeding component, a thermal drying component, a feeding component, a material leveling component and an anti-blocking cleaning component, wherein the box component comprises a drying box, the layered feeding component comprises a feeding belt, the thermal drying component comprises an air guide trough, the feeding component comprises a bottom hopper, a top hopper and a feeding channel, the material leveling component comprises a material leveling shaft, and the anti-blocking cleaning component comprises a brush sleeve;

[0007] The layered conveyor assembly is located inside the box structure. Arrays of conveyor belts are connected end to end from top to bottom. Each group of conveyor belts is equipped with an arc-shaped cover. The air guide trough is connected to one end of the arc-shaped cover and is located at the reversing junction of different groups of arc-shaped covers. Each group of arc-shaped covers is equipped with a heating wire on its inner surface.

[0008] The bottom hopper is connected to the discharge end of the conveyor belt, and the top hopper is connected to the feed end of the conveyor belt. A rotatable auger is provided in the feeding channel connecting the bottom hopper and the top hopper. A drainage hole is provided on the bottom surface of the feeding channel. The material leveling shaft is screwed to the inner bottom of the top hopper and is connected to the auger transmission to achieve uniform material discharge onto the conveyor belt. The brush sleeve is sleeved on the outside of the feeding channel, and the auger can drive the brush sleeve to form a reciprocating movement.

[0009] The use process of the technical solution of the present invention is as follows:

[0010] The bottom hopper at a low position is used to put in the initial biogas residue to be dried. After starting the rotary drive device connected to the auger, the biogas residue to be dried can be lifted from the bottom hopper and transported to the top hopper. The bottom surfaces of the bottom and top hoppers are both inclined structures.

[0011] Since there are drainage holes on the bottom of the feeding channel, when the biogas residue passes through the feeding channel, part of the water will be discharged outward from the drainage holes due to the effect of gravity;

[0012] Each layer of curved covers and conveyor belts can form a drying channel. The bottom outlet of the top hopper passes through a set of curved covers at the top and is connected to the conveyor belt. The biogas residue entering the top hopper will fall down to the top surface of the conveyor belt.

[0013] When the drain hole rotates, the screed shaft connected to the drain hole can also rotate. The purpose of the rotation of the screed shaft is to slow down the speed of the biogas residue falling from the top hopper to the conveyor belt, and on the other hand, it can make the biogas residue more evenly distributed horizontally from the top hopper to the top surface of the conveyor belt.

[0014] The array of conveyor belts can form a synchronous rolling conveying action. As the biogas residue is conveyed to the top group of conveyor belts and the conveyor belts themselves roll, the biogas residue can be arranged and distributed on the top surfaces of different conveyor belts in sequence.

[0015] Start the air source connected to the set of arc-shaped covers at the top and the electric heating wire to form a hot air channel between the set of arc-shaped covers and the conveyor belt to dry the biogas residue spread on the top surface of each set of conveyor belts;

[0016] The purpose of setting the air guide groove is to provide a turning guide for the hot air;

[0017] The sludge that has undergone the initial drying treatment can return to the bottom hopper from the outlet of the conveyor belt at the bottom, and then be lifted up to the top hopper by the auger, and enter the hot air channel composed of the arc hood and the conveyor belt again for drying. This cycle of treatment can complete the drying operation of the sludge. A normally closed discharge port is provided at the bottom of the bottom hopper to discharge the dried sludge.

[0018] By adopting the above technical solution, the present invention can achieve the following beneficial effects:

[0019] (1) The present invention is based on an array of conveyor belts connected end to end from top to bottom inside a drying box, and an arc cover is provided above each group of conveyor belts, and an air guide groove is provided at the transition of the arc cover, which can form a reversal of hot air between the arc covers of different layers, so that the air source from one side of the top group of arc covers can pass through the reversing and diversion effect of each group of air guide grooves and reach the bottom group of arc covers, thereby forming an air circulation channel composed of arc covers at different heights and conveyor belts, and can cooperate with the heat emitted by the electric heating wire installed on the inner surface of the arc cover to achieve the purpose of efficiently drying the biogas residue spread on the top surface of the conveyor belt;

[0020] (2) The present invention is not only provided with a feeding assembly for lifting the biogas residue from a low position to a high position, but also has drainage holes on the bottom surface of the feeding channel connected between the bottom hopper and the top hopper, which can realize the transfer and transportation of the biogas residue from the bottom hopper to the top hopper while realizing the preliminary discharge of water in the biogas residue, thereby reducing the moisture content of the biogas residue falling from the top hopper to the top surface of the conveyor belt, thereby improving the drying efficiency;

[0021] (3) The rotation of the auger of the present invention can not only lift the biogas residue from the bottom hopper to the top hopper, but also drive the rotation of the material leveling shaft. Since the material leveling shaft is arranged at the outlet position at the bottom end of the top hopper, the teeth arranged on the outside of the material leveling shaft can make the biogas residue in the top hopper slowly and evenly spread on the top surface of the conveyor belt, avoiding local over-drying or over-wetting. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the box member of the present invention;

[0025] Figure 3 This is a schematic diagram of the external structure of the layered material feeding assembly of the present invention;

[0026] Figure 4 This is a schematic diagram of the internal structure of the layered material feeding assembly of the present invention;

[0027] Figure 5 This is a schematic diagram of the position structure of the thermal drying component and the layered material feeding component of the present invention;

[0028] Figure 6 This is a schematic structural diagram of the thermal drying component of the present invention;

[0029] Figure 7 This is a schematic structural diagram of the curved cover portion of the present invention from a first viewing angle;

[0030] Figure 8 This is a schematic structural diagram of the curved cover portion of the present invention from a second viewing angle;

[0031] Figure 9 It is a structural schematic diagram of the feeding assembly of the present invention;

[0032] Figure 10 This is a structural diagram of the connection between the bottom hopper and the feeding channel of the present invention;

[0033] Figure 11 It is a structural schematic diagram of the material leveling assembly of the present invention;

[0034] Figure 12 This is a schematic structural diagram of the material leveling tooth portion of the present invention;

[0035] Figure 13 This is a schematic structural diagram of the anti-blocking and cleaning component of the present invention;

[0036] Figure 14 It is a structural schematic diagram of the brush cover part of the present invention;

[0037] Figure 15 It is a structural schematic diagram of the raking component of the present invention.

[0038] Reference numerals:

[0039] 1. Box body; 2. Layered feeding assembly; 3. Thermal drying assembly; 4. Feeding assembly; 5. Material leveling assembly; 6. Anti-blocking cleaning assembly; 7. Raking assembly; 101. Base frame; 102. Drying box; 201. Upper retainer; 202. Discharge chute; 203. Inner frame; 204. Feeding motor; 205. Sprocket assembly; 206. Feeding rack; 207. Roller; 208. Feeding belt; 2 09, U-shaped baffle; 301, centrifugal fan; 302, curved cover; 303, feed port; 304, air guide trough; 305, air collecting cover; 306, heating wire; 401, bottom hopper; 402, top hopper; 403, feeding channel; 404, auger; 405, drainage hole; 406, water collecting trough; 407, feeding motor; 408, top cover; 409, drainage pipe; 410, discharge chute; 411 1. Closing plate; 501, top rotating bevel gear; 502, top transmission seat; 503, transmission shaft; 504, top transmission bevel gear; 505, top rotating pulley; 506, material leveling shaft seat; 507, material leveling shaft; 508, bottom rotating pulley; 509, transmission belt; 510, material leveling teeth; 601, side rotating seat; 602, side rotating shaft; 603, side rotating bevel gear; 604, top rope pulley; 605, bottom rope pulley seat; 606, bottom rope pulley; 607, wire rope; 608, brush sleeve; 609, conductive seat; 610, outer limit block; 611, micro electric cylinder; 612, inner limit block; 701, raking shaft seat; 702, raking shaft; 703, rake frame; 704, rake claw; 705, swing arm; 706, rotating fixed seat; 707, rotating shaft; 708, rotating bevel gear; 709, fixed rotating rod; 710, rolling column. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] like Figures 1-15 As shown, a device for drying biogas residue using a heat source is provided. A layered feed assembly 2 is provided inside a box member 1. A plurality of feed belts 208 are connected end to end from top to bottom to form a feed channel. An arc-shaped cover 302 is provided above each set of feed belts 208. An air guide trough 304 is connected to one end of the arc-shaped cover 302 and is located at the reversing junction of different sets of arc-shaped covers 302. A heating wire 306 is arranged and installed on the inner surface of each set of arc-shaped covers 302.

[0043] One side of the top set of arc-shaped covers 302 is connected to an air source, which can form an air duct between the sets of arc-shaped covers 302;

[0044] The bottom hopper 401 is connected to the discharge end of the conveyor belt 208, and the top hopper 402 is connected to the feed end of the conveyor belt 208. A rotatable auger 404 is provided in the feeding channel 403 connecting the bottom hopper 401 and the top hopper 402, which can lift the biogas residue from the bottom hopper 401 to the top hopper 402. The bottom surface of the feeding channel 403 is provided with a drainage hole 405;

[0045] The material leveling shaft 507 is screwed to the inner bottom of the top hopper 402 and is in transmission connection with the auger 404 to achieve uniform material discharge onto the conveyor belt 208. The brush sleeve 608 is sleeved on the outside of the feeding channel 403, and the auger 404 can drive the brush sleeve 608 to form a reciprocating movement to clean the drainage hole 405 in real time.

[0046] Here’s how it works:

[0047] The bottom hopper 401 located at a lower position is used to input the initial biogas residue to be dried, which can facilitate the operation;

[0048] After the rotary drive device connected to the auger 404 is started, the biogas residue to be dried can be lifted from the bottom hopper 401 and transported to the top hopper 402;

[0049] The bottom surfaces of the bottom hopper 401 and the top hopper 402 are both inclined structures, which can facilitate the entry of the biogas residue in the bottom hopper 401 into the feeding channel 403, and the biogas residue entering the top hopper 402 from the feeding channel 403 is horizontally dispersed into the interior of the top hopper 402, so as to be more evenly spread on the top surface of the conveyor belt 208;

[0050] Furthermore, since the bottom surface of the feeding channel 403 is provided with drainage holes 405, when the biogas residue passes through the feeding channel 403, due to the effect of gravity, some water will be discharged outward from the drainage holes 405, thereby achieving the purpose of physically removing water from the biogas residue;

[0051] Each layer of arc-shaped covers 302 and the conveyor belt 208 can form a drying channel. The bottom outlet of the top hopper 402 passes through a group of arc-shaped covers 302 at the top and is connected to the conveyor belt 208. The biogas residue entering the top hopper 402 will fall downward onto the top surface of the conveyor belt 208.

[0052] When the drain hole 405 rotates, the material leveling shaft 507 connected to the drain hole 405 can also rotate. The purpose of the rotation of the material leveling shaft 507 is to slow down the speed at which the biogas residue falls from the top hopper 402 to the conveyor belt 208, and on the other hand, it can make the biogas residue more evenly distributed from the top hopper 402 to the top surface of the conveyor belt 208, thereby facilitating subsequent drying treatment.

[0053] The plurality of conveyor belts 208 can form a synchronous rolling conveying action. As the biogas residue is conveyed to the top group of conveyor belts 208 and the conveyor belts 208 themselves roll, the biogas residue can be sequentially arranged and distributed on the top surfaces of different conveyor belts 208.

[0054] Start the air source connected to the top set of arc-shaped covers 302 and the heating wire 306 to form a hot air channel between the array of arc-shaped covers 302 and the conveyor belt 208 to dry the biogas residue spread on the top surface of each set of conveyor belts 208;

[0055] The purpose of the air guide groove 304 is to allow the hot air to circulate back and forth through the channels formed between each set of arc-shaped covers 302 and the conveyor belt 208, thereby providing a turning guide for the hot air.

[0056] After the initial drying process, the biogas residue can be returned to the bottom hopper 401 from the outlet of the conveyor belt 208 at the bottom, and then lifted upward by the auger 404 to the top hopper 402, and then enter the hot air channel formed by the curved cover 302 and the conveyor belt 208 for drying again. The drying operation of the biogas residue can be completed by repeating the cycle.

[0057] The purpose of the cyclic drying process is to break up the original state of the biogas residue in the conveyor belt 208 so that the biogas residue is remixed and then lifted by the auger 404 again into the hot air channel formed by the curved cover 302 and the conveyor belt 208, thereby achieving uniform heating and drying of the biogas residue.

[0058] A normally closed discharge port is provided at the bottom of the bottom hopper 401, which can discharge the sludge that has been circulated and dried.

[0059] The specific structure of the box component 1 and the layered feeding component 2 is as follows Figure 2 、 Figure 3 and Figure 4As shown, the outer bottom end of the drying box 102 is fixedly connected to the top of the bottom frame 101. The drying box 102 is a closed cavity structure. In order to reduce heat loss, improve thermal efficiency, and maintain a stable drying temperature in the bottom frame 101, an insulation layer can be provided on the outside of the bottom frame 101.

[0060] The upper retainer 201 is provided on one side of the top of the drying box 102. The outer surface of the main body of the top hopper 402 is fixedly connected to the upper retainer 201. The lower end of the main body on the other side of the drying box 102 is connected to the discharge chute 202. The discharge chute 202 is used to achieve communication between the conveyor belt 208 and the bottom hopper 401.

[0061] An inner frame 203 is fixed inside the drying box 102 for providing stable support for the inner space of the drying box 102. The feed frame 206 is fixedly connected to the inner frame 203. Rollers 207 are inserted into both ends of each set of feed belts 208. The rollers 207 are rotatably connected to the feed frame 206. A feed motor 204 is fixedly installed on one side of the inner frame of the bottom frame 101. A sprocket set 205 is connected between the rotating shafts of the rollers 207 on the same side and between the rotating shafts of the rollers 207 and the rotating shafts of the feed motor 204. The sprocket set 205 consists of a sprocket fixed to the rotating shaft of the rollers 207 or the feed motor 204 and a chain sleeved between the two sets of sprockets, which can drive the feed belts 208 at different heights to form a synchronous rolling conveying action.

[0062] A U-shaped stopper 209 is provided above each set of conveyor belts 208. The U-shaped stopper 209 is fixedly connected to the conveyor frame 206. The U-shaped stops 209 above each set of conveyor belts 208 are staggered from top to bottom and do not interfere with the rolling movement of the conveyor belts 208. They are used to achieve the flattening of the biogas residue on the top surface of the conveyor belts 208 and prevent the biogas residue from sliding from the conveyor belts 208 to other locations.

[0063] In addition, the length of the conveyor belts 208 at the bottom is set to be greater than the length of the conveyor belts 208 in other groups, in order to achieve the transfer and output of the biogas slag.

[0064] The specific structure of the thermal drying component 3 is as follows Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown, the centrifugal fan 301 is fixedly mounted on the outer side of the drying box 102, the bottom end of the arc cover 302 is buckled with the top end of the U-shaped baffle 209, and the outlet pipe of the centrifugal fan 301 passes through the side wall of the drying box 102 and communicates with a group of arc covers 302 at the top, so as to provide an air source to the channel formed by the conveyor belt 208 and the arc covers 302. If necessary, the inlet end of the centrifugal fan 301 can be connected to an external heat source, and in conjunction with the use of the electric heating wire 306, the biogas residue spread on the top surface of the conveyor belt 208 can be dried.

[0065] A feed inlet 303 is fixedly connected to the position of the main body of a set of arc-shaped covers 302 at the top facing the upper retainer 201, and the outlet position at the bottom end of the top hopper 402 is connected to the feed inlet 303 to form a channel for biogas residue;

[0066] A wind collecting hood 305 is also provided on one side of each group of air guide grooves 304. The wind collecting hood 305 is used in pairs with the air guide grooves 304 and is also fixedly connected to the end position of the curved hood 302. The wind collecting hood 305 is a flared shape, and the lateral coverage size is larger than the outline size of the air guide grooves 304. The purpose is to collect the airflow derived from the wind collecting hood 305, so that the airflow can flow more smoothly in the channel formed by each group of curved hoods 302 and the conveyor belt 208.

[0067] The specific structure of the feeding assembly 4 and the screed assembly 5 is as follows: Figure 9 、 Figure 10 、 Figure 11 and Figure 12 As shown, the bottom hopper 401 is fixedly connected to the bottom frame 101, and a feeding motor 407 is also fixedly installed on one side of the bottom frame 101. The top cover of the feeding channel 403 is connected to the top cover 408. The top rotating shaft of the auger 404 is rotatably connected to the top cover 408, and the bottom rotating shaft passes through the bottom wall of the bottom hopper 401 and is fixedly connected to the rotating shaft of the feeding motor 407, so that the auger 404 can automatically rotate to lift the biogas residue.

[0068] A water collecting trough 406 is further provided below the bottom surface of the feeding channel 403. The water collecting trough 406 is fixedly connected between the bottom hopper 401 and the top hopper 402 and completely covers the drainage hole 405. It is used to collect water discharged from the drainage hole 405. A drainage pipe 409 is fixedly connected to the bottom end of the water collecting trough 406 to discharge the collected water.

[0069] A discharge chute 410 is fixedly mounted at the lower end of the opening of the bottom hopper 401. A sealing plate 411 is slidably inserted into the discharge chute 410. When the biogas residue is drying, the sealing plate 411 is in a closed position. After the drying is completed, the sealing plate 411 can be moved horizontally to open the discharge chute 410 and discharge the biogas residue.

[0070] The top-rotating bevel gear 501 is plugged and fixed in the top rotating shaft of the auger 404. The top of one side of the top hopper 402 is fixedly connected to the top transmission seat 502. The transmission shaft 503 is rotatably connected to the top transmission seat 502. The top transmission bevel gear 504 is plugged and fixed to one end of the transmission shaft 503 and meshes with the top-rotating bevel gear 501. The other end of the transmission shaft 503 is plugged and fixed with a top-rotating pulley 505.

[0071] The bottom body of the top hopper 402 is fixedly mounted with a screed shaft seat 506 on both sides. The two ends of the screed shaft 507 are rotatably connected to different screed shaft seats 506. The bottom rotating pulley 508 is plugged and fixed to the outer end of the screed shaft 507. A transmission belt 509 is sleeved and mounted between the top rotating pulley 505 and the bottom rotating pulley 508.

[0072] The sparging teeth 510 are arranged and fixed on the outside of the sparging shaft 507 located in the inner cavity at the bottom end of the top hopper 402, so that when the auger 404 rotates, it can drive the top rotating bevel gear 501 and the top transmission bevel gear 504 to form a coordinated transmission. The top transmission bevel gear 504 drives the top rotating pulley 505 to rotate coaxially through the transmission shaft 503. The top rotating pulley 505 drives the bottom rotating pulley 508 and the sparging shaft 507 to rotate through the transmission belt 509, forming a sparging action of the sparging teeth 510 and the sparging shaft 507;

[0073] The material leveling teeth 510 are tightly arranged in the inner cavity at the bottom end of the bottom hopper 401, which can not only intercept the sludge entering the top hopper 402, so that the sludge slowly falls to the top surface of the conveyor belt 208, but also cooperate with the inclined structure of the bottom surface of the top hopper 402 itself to make the sludge evenly spread on the top surface of the conveyor belt 208.

[0074] The specific structure of the anti-blocking cleaning component 6 is as follows Figure 13 and Figure 14 As shown, the side rotating seat 601 is fixedly connected to the outside of the top cover 408, the side rotating shaft 602 is rotatably connected to the side rotating seat 601, the side rotating bevel gear 603 is plugged and fixed to one end of the side rotating shaft 602, and meshes with the top rotating bevel gear 501, and the other end of the side rotating shaft 602 is plugged and fixed with a top rope pulley 604, and a bottom rope pulley seat 605 is fixedly installed on the top surface of the bottom end of the feeding channel 403, and a bottom rope pulley 606 is rotatably connected in the bottom rope pulley seat 605, and a steel wire rope 607 is sleeved and installed between the bottom rope pulley 606 and the top rope pulley 604, and the steel wire rope 607 is in a tensioned state, so as to realize the long-distance movement of the steel wire rope 607 between the bottom rope pulley 606 and the top rope pulley 604;

[0075] A conductive seat 609 is fixed to the outside of the brush cover 608. The top of the conductive seat 609 is symmetrically fixedly connected to an outer limit block 610. The outer limit block 610 on the same side slides on the outside of the wire rope 607, which can improve the movement stability of the wire rope 607 to a certain extent. The top of the conductive seat 609 is also fixedly installed with a pair of micro-electric cylinders 611. The top of the telescopic rod of each set of micro-electric cylinders 611 is fixedly connected to an inner limit block 612, and the telescopic rods of the two sets of micro-electric cylinders 611 can be telescopically moved alternately.

[0076] When the top bevel gear 501 rotates, it can drive the top rope pulley 604 to rotate through the transmission formed by the side bevel gear 603, so that the wire rope 607 connected between the top rope pulley 604 and the bottom rope pulley 606 forms a rolling movement;

[0077] When the telescopic rods of the two sets of micro-electric cylinders 611 are alternately extended and retracted, the inner limit block 612 and the outer limit block 610 on one side clamp the wire rope 607, while the inner limit block 612 and the outer limit block 610 on the other side move away from each other.

[0078] The two ends of the outside of the feeding channel 403 are provided with travel switches for controlling the alternating telescopic movement of the telescopic rods of the two sets of micro-electric cylinders 611. The inner limit block 612 and the outer limit block 610 on one side form a clamping action on the wire rope 607. The rolling movement of the wire rope 607 drives the brush cover 608 to move to the position where the travel switch at one end of the feeding channel 403 touches. The inner limit block 612 and the outer limit block 610 on the other side can form a clamping action on the wire rope 607, so that when the wire rope 607 always rolls in a certain direction, it can drive the brush cover 608 to form a reciprocating brushing action on the outside of the feeding channel 403.

[0079] The brush cover 608 is composed of a sliding cover and a brush cover. The sliding cover is slidably connected to the outside of the feeding channel 403. The bristles on the inner surface of the brush cover rub against the outside of the feeding channel 403 to clean the clogged drainage hole 405 in real time.

[0080] Furthermore, since the outer limit blocks 610 on different sides are respectively slid onto the outer sides of the two straight ends of the wire rope 607, the brush cover 608 can slide along the outside of the feeding channel 403 without twisting.

[0081] Preferably, the raking member 7 can improve the uniformity of the lateral distribution of the biogas residue entering the top hopper 402. Figure 15As shown, the raking shaft seat 701 is symmetrically fixedly installed in the side wall of the top hopper 402, the middle part of the rake frame 703 is fixedly connected to the raking shaft 702, and the two ends of the rake shaft 702 are rotatably connected to different raking shaft seats 701, and the bottom end of the rake frame 703 is arranged and fixed with a rake claw 704; the top of one side of the top hopper 402 is fixed with a rotating fixed seat 706, and the rotating fixed seat 706 is rotatably connected with a rotating shaft 707, one end of the rotating shaft 707 is fixed with a rotating bevel gear 708, and the other end is fixed with a fixed rotating rod 709, and the rotating bevel gear 708 is meshed with the top transmission bevel gear 504 and does not interfere with the cooperation between the top rotating bevel gear 501 and the top transmission bevel gear 504; one side of the top of the rake frame 703 is fixedly connected to a swing arm 705, and the other end of the fixed rotating rod 709 The end is rotatably connected with a rolling column 710, and the rolling column 710 is rollingly connected to the groove body opened in the main body of the swing arm 705; when the auger 404 rotates and lifts the sludge from the bottom hopper 401 to the top hopper 402, the rotation of the fixed rotating rod 709 can be driven by the coordinated transmission formed by the top transmission bevel gear 504 and the rotating bevel gear 708. The rolling sliding cooperation formed by the rolling column 710 and the swing arm 705 can drive the swing arm 705, the rake frame 703 and the rake claw 704 to swing back and forth within a certain range with the raking shaft 702 as the center, forming a horizontal raking action for the sludge in the top hopper 402, preventing too much sludge from entering the top surface of the conveyor belt 208 from one side of the top hopper 402, resulting in uneven distribution of sludge on the top surface of the conveyor belt 208.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for drying biogas residue using a heat source, comprising a box member (1), characterized in that: It also includes a layered material feeding component (2), a thermal drying component (3), a feeding component (4), a material leveling component (5) and an anti-blocking cleaning component (6); The box component (1) includes a drying box (102), the layered feeding assembly (2) includes a feeding belt (208), the thermal drying assembly (3) includes an air guide groove (304), the feeding assembly (4) includes a bottom hopper (401), a top hopper (402) and a feeding channel (403), the material leveling assembly (5) includes a material leveling shaft (507), and the anti-blocking cleaning assembly (6) includes a brush sleeve (608); The layered feeding assembly (2) is located inside the box member (1), and the plurality of feeding belts (208) are connected end to end from top to bottom. A curved cover (302) is provided above each group of feeding belts (208). An air guide groove (304) is connected to one end of the curved cover (302) and is located at the reversing junction of the curved covers (302) of different groups. A heating wire (306) is arranged and installed on the inner surface of each group of curved covers (302). The bottom hopper (401) is connected to the discharge end of the feeding belt (208), and the top hopper (402) is connected to the discharge end of the feeding belt (208). ) is connected to the feeding end of the feeding belt (208), a rotatable auger (404) is provided in the feeding channel (403) connecting the bottom hopper (401) and the top hopper (402), a drainage hole (405) is provided on the bottom surface of the feeding channel (403), a material leveling shaft (507) is screwed to the inner bottom of the top hopper (402), and is in transmission connection with the auger (404), a brush sleeve (608) is sleeved on the outside of the feeding channel (403), and the auger (404) can drive the brush sleeve (608) to form a reciprocating movement.

2. The device for drying biogas residue using a heat source according to claim 1, characterized in that: The box structure (1) further comprises a bottom frame (101), and the outer bottom end of the drying box (102) is fixedly connected to the top end of the bottom frame (101).

3. The device for drying biogas residue using a heat source according to claim 2, characterized in that: The layered feeding assembly (2) further comprises an upper retainer (201) and a feeding frame (206), wherein the upper retainer (201) is provided on one side of the top of the drying box (102), the outer surface of the main body of the top hopper (402) is fixedly connected to the upper retainer (201), the lower end main body on the other side of the drying box (102) is connected to a discharge trough (202), an inner frame (203) is fixed inside the drying box (102), the feeding frame (206) is fixedly connected to the inner frame (203), and rollers (207) are inserted at both ends of the inner portion of each set of feeding belts (208). The rollers (207) are all rotatably connected to the feed frame (206); a feed motor (204) is fixedly mounted on one side of the inner frame of the chassis (101); a sprocket set (205) is connected between the rotating shafts of the rollers (207) on the same side and between the rotating shafts of the rollers (207) and the rotating shafts of the feed motor (204); a U-shaped stop (209) is provided above each group of feed belts (208); the U-shaped stop (209) is fixedly connected to the feed frame (206); and the U-shaped stops (209) located above the array of feed belts (208) are staggered and distributed sequentially from top to bottom.

4. The device for drying biogas residue using a heat source according to claim 3, characterized in that: The thermal drying component (3) also includes a centrifugal fan (301), which is fixedly installed on the outer side of the drying box (102), the bottom end of the arc cover (302) is buckled with the top end of the U-shaped baffle (209), and the outlet pipe of the centrifugal fan (301) passes through the side wall of the drying box (102) and is connected to the group of arc covers (302) at the top. The main body of the group of arc covers (302) at the top is fixedly connected with a feed port (303), and the outlet position of the bottom end of the top hopper (402) is connected to the feed port (303). A wind collecting cover (305) is also provided on one side of each group of air guide grooves (304).

5. The device for drying biogas residue using a heat source according to claim 2, 3 or 4, 3, characterized in that: The feeding assembly (4) further comprises a drain pipe (409) and a sealing plate (411), the bottom hopper (401) is fixedly connected to the bottom frame (101), a feeding motor (407) is fixedly mounted on one side of the bottom frame (101), the top cover of the feeding channel (403) is connected to the top cover (408), the top rotating shaft of the auger (404) is rotatably connected to the top cover (408), and the bottom rotating shaft passes through the bottom wall of the bottom hopper (401) and is connected to the feeding motor. The rotating shaft of (407) is fixedly connected, and a water collecting trough (406) is further provided below the bottom surface of the feeding channel (403), the water collecting trough (406) is fixedly connected between the bottom hopper (401) and the top hopper (402), the drain pipe (409) is fixedly connected to the bottom end of the water collecting trough (406), and a discharge trough (410) is fixedly installed at the lower end of the opening position of the bottom hopper (401), and the sealing plate (411) is slidably inserted into the discharge trough (410).

6. The device for drying biogas residue using a heat source according to claim 1, 2, 3 or 4, characterized in that: The material leveling assembly (5) further comprises a top rotating bevel gear (501), a transmission shaft (503), a top transmission bevel gear (504) and a bottom rotating pulley (508); the top rotating bevel gear (501) is plugged and fixed in the top rotating shaft of the auger (404); a top transmission seat (502) is fixedly connected to the top of one side of the top hopper (402); the transmission shaft (503) is rotatably connected to the top transmission seat (502); the top transmission bevel gear (504) is plugged and fixed to one end of the transmission shaft (503) and meshed with the top rotating bevel gear (501); the transmission shaft (503) The other end is fixed with a top rotating pulley (505), and both sides of the bottom main body of the top hopper (402) are fixed with a material sparging shaft seat (506). The two ends of the material sparging shaft (507) are respectively rotatably connected to different material sparging shaft seats (506). The bottom rotating pulley (508) is fixed with the outer end of the material sparging shaft (507). A transmission belt (509) is installed between the top rotating pulley (505) and the bottom rotating pulley (508). Material sparging teeth (510) are arranged and fixed on the outside of the material sparging shaft (507) in the inner cavity at the bottom end of the top hopper (402).

7. The device for drying biogas residue using a heat source according to claim 5, characterized in that: The material leveling assembly (5) further comprises a top rotating bevel gear (501), a transmission shaft (503), a top transmission bevel gear (504) and a bottom rotating pulley (508); the top rotating bevel gear (501) is plugged and fixed in the top rotating shaft of the auger (404); a top transmission seat (502) is fixedly connected to the top of one side of the top hopper (402); the transmission shaft (503) is rotatably connected to the top transmission seat (502); the top transmission bevel gear (504) is plugged and fixed to one end of the transmission shaft (503) and meshed with the top rotating bevel gear (501); the transmission shaft (503) The other end is fixed with a top rotating pulley (505), and both sides of the bottom main body of the top hopper (402) are fixed with a material sparging shaft seat (506). The two ends of the material sparging shaft (507) are respectively rotatably connected to different material sparging shaft seats (506). The bottom rotating pulley (508) is fixed with the outer end of the material sparging shaft (507). A transmission belt (509) is installed between the top rotating pulley (505) and the bottom rotating pulley (508). Material sparging teeth (510) are arranged and fixed on the outside of the material sparging shaft (507) in the inner cavity at the bottom end of the top hopper (402).

8. The device for drying biogas residue using a heat source according to claim 7, characterized in that: The anti-blocking cleaning assembly (6) further comprises a side rotating seat (601), a side rotating shaft (602) and a side rotating bevel gear (603), wherein the side rotating seat (601) is fixedly connected to the outside of the top cover (408), the side rotating shaft (602) is rotatably connected to the side rotating seat (601), the side rotating bevel gear (603) is plugged and fixed to one end of the side rotating shaft (602) and meshed with the top rotating bevel gear (501), the other end of the side rotating shaft (602) is plugged and fixed with a top rope pulley (604), the bottom end top surface of the feeding channel (403) is fixedly mounted with a bottom rope pulley seat (605), and the bottom rope pulley seat ( A bottom rope pulley (606) is rotatably connected in the brush housing (605), a steel wire rope (607) is sleeved and installed between the bottom rope pulley (606) and the top rope pulley (604), a conductive seat (609) is fixed on the outside of the brush housing (608), and the top of the conductive seat (609) is symmetrically fixedly connected with an outer limit block (610), and the outer limit block (610) on the same side is slid on the outside of the steel wire rope (607), and the top of the conductive seat (609) is also fixedly installed with a pair of micro-electric cylinders (611), and the top of the telescopic rod of each group of micro-electric cylinders (611) is fixedly connected with an inner limit block (612).

9. The device for drying biogas residue using a heat source according to claim 7 or 8, characterized in that: The top hopper (402) is also provided with a rake member (7) which is transmission-connected to the top transmission bevel gear (504). The rake member (7) includes a rake shaft seat (701) and a rake frame (703). The rake shaft seat (701) is symmetrically fixedly installed in the side wall of the top hopper (402). The middle part of the rake frame (703) is fixedly connected with a rake shaft (702). The two ends of the rake shaft (702) are respectively rotatably connected to different rake shaft seats (701). The bottom end of the rake frame (703) is arranged and fixed with a rake claw (704). The top of one side of the top hopper (402) is fixedly connected to the top hopper (402). A rotating fixed seat (706) is fixed at one end, a rotating shaft (707) is rotatably connected in the rotating fixed seat (706), a rotating bevel gear (708) is fixed at one end of the rotating shaft (707), and a fixed rotating rod (709) is fixed at the other end, and the rotating bevel gear (708) is meshed with the top transmission bevel gear (504), a top side of the rake frame (703) is fixedly connected to a swing arm (705), and the other end of the fixed rotating rod (709) is rotatably connected to a rolling column (710), and the rolling column (710) is rollingly connected to a groove body opened in the main body of the swing arm (705).

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