Bidirectional winding drum transmission conveying structure for sludge high-pressure dewatering

Abstract

The application discloses a bidirectional winding drum transmission conveying structure for sludge high-pressure dewatering and relates to the technical field of sludge treatment. The application comprises a sludge calorific value conditioner body, wherein the sludge calorific value conditioner body comprises a rack and a transmission conveying mechanism arranged on the rack. The transmission conveying mechanism facilitates the conveying of sludge. A spiral spreader is arranged on the left side of the upper surface of the rack, which facilitates the preliminary breaking and spreading of the conveyed sludge. A mud pressing roller is arranged on the right side of the spiral spreader, which further flattens the sludge in the conveying process, prevents the uneven accumulation of the sludge on the transmission conveying mechanism and influences the subsequent extrusion dewatering. The transmission conveying mechanism comprises a left winding drum, a right winding drum and a dewatering filter cloth. The winding drum and the right winding drum are both provided with a winding cloth, and a splicing assembly is arranged between the winding cloth and the dewatering filter cloth, which facilitates the installation and replacement of the dewatering filter cloth.

Description

Technical Field

[0001] This invention belongs to the field of sludge treatment technology, and in particular relates to a bidirectional drum drive conveying structure for high-pressure dewatering of sludge. Background Technology

[0002] Sludge refers to the sediments, particulate matter, and floating matter produced during wastewater treatment using physical, chemical, physicochemical, and biological methods. After sludge is generated, it needs to be treated to prevent indiscriminate discharge and pollution. Sludge incineration is one such process. It uses an incinerator to heat and dry dewatered sludge, then oxidizes the organic matter in the sludge at high temperatures, reducing it to a small amount of ash. Before entering the incinerator for combustion, the sludge needs to be dewatered to ensure sufficient calorific value to meet the boiler's requirements for fuel.

[0003] Currently, in the process of sludge dewatering, a conveying mechanism is required to transport the sludge. Traditional conveying mechanisms are mostly belt drive conveyors. During use, due to the presence of mud and water, slippage is prone to occur, requiring an additional tensioning mechanism, which increases maintenance costs. Some use chain drive conveyors, which have a more complex structure and are heavier overall, increasing manufacturing costs. During use, due to the action of sludge and water, the chain is prone to wear and rust, and problems such as tooth breakage and jamming are likely to occur, making maintenance more troublesome.

[0004] The publication number "CN113730996A" discloses "a high-efficiency dewatered sludge calorific value conditioning machine". Through the active conveying mechanism composed of active rollers and pressing rollers, the composite filter cloth has sufficient pre-tension during the transmission process, so that the composite filter cloth does not slip during the actual filtration process. The auxiliary feeding mechanism composed of active rollers and auxiliary rollers can avoid the phenomenon of the composite filter cloth becoming too long, the belt not being able to support it, or the conveying force not being transmitted to the feed end when conveying sludge over long distances.

[0005] The aforementioned existing technologies still have the following drawbacks:

[0006] When conveying sludge, the composite filter cloth needs to be driven and tensioned by the cooperation of the active roller and the pressing roller, as well as the cooperation of the active roller and the auxiliary roller. The structure is relatively complex, which increases the maintenance cost. After long-term use, the composite filter cloth will wear and be damaged, and it is impossible to replace the composite filter cloth quickly, which affects the normal use of the equipment and the sludge conveying efficiency.

[0007] To address this issue, we designed a bidirectional drum drive conveyor structure for high-pressure sludge dewatering. Summary of the Invention

[0008] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0009] This invention relates to a bidirectional drum-driven conveying structure for high-pressure dewatering of sludge, comprising a sludge calorific value conditioning machine body. The sludge calorific value conditioning machine body includes a frame and a dewatering assembly mounted on the frame. A transmission and conveying mechanism is disposed inside the frame, cooperating with the dewatering assembly. A spiral spreader is disposed on the left side of the upper surface of the frame, and a pressing roller is disposed on the right side of the spiral spreader. The transmission and conveying mechanism includes:

[0010] The machine includes a left and a right roller, which are arranged opposite each other on the left and right sides inside the frame. The left and right rollers have the same structure. The left roller includes a fixing plate, screws, and a take-up roller. The fixing plate is welded and fixed to the take-up roller. Both the left and right rollers have rolled cloth, and one end of the rolled cloth is fixed to the fixing plate by several screws. The movable end of the rolled cloth is fixed with a splicing component. A dewatering filter cloth is connected between the two splicing components. A left support roller and a right support roller are respectively installed on the upper side of the left and right ends of the frame. The left and right support rollers are both located inside the dewatering filter cloth and are in close contact with it.

[0011] The transmission and conveying mechanism also includes a left motor and a right motor. The left motor and the right motor are respectively mounted on the left and right sides of the upper surface of the frame via a first mounting bracket and a second mounting bracket. The front ends of the left drum and the right drum are respectively connected to a left electromagnetic clutch and a right electromagnetic clutch, and the front ends of the left electromagnetic clutch and the right electromagnetic clutch are respectively connected to a left sprocket and a right sprocket. The output end of the left motor and the left sprocket, as well as the output end of the right motor and the right sprocket, are connected by chain drive.

[0012] The spiral spreader includes a first bearing seat, a spiral blade, and a first sprocket. Two first supports are fixed to each other on the left side of the upper surface of the frame. The first bearing seat is installed inside the first support. A rotating rod is rotatably connected between the two first bearing seats. The spiral blade is installed on the rotating rod. The rear end of the rotating rod passes through the rear first bearing seat and is connected to the first sprocket.

[0013] The pressing roller includes a second bearing seat, a scraper, a drum, and a second sprocket. A second support is provided on the right side of the first support and is fixed on the frame. The second bearing seat is installed inside the second support. The drum is rotatably mounted between the front and rear second bearing seats via a rotating shaft. A connecting plate is fixed to the upper side of the front and rear second supports by bolts. The scraper is fixed to one side of the connecting plate by several bolts, and the lower end of the scraper cooperates with the drum. The rear end of the rotating shaft passes through the rear second bearing seat and is connected to the second sprocket. The first sprocket and the second sprocket are connected by chain drive. A drive motor is connected to the rear end of the second sprocket.

[0014] The splicing assembly includes a toothed meshing plate, a cylindrical body, a shell, a rotating shaft, a first magnet, a second magnet, a knob, and a rectangular magnet. The surface of the shell has a through groove, and the rotating shaft is rotatably installed inside the through groove. The toothed meshing plate is fixed to the rotating shaft by a connecting block, and the toothed part of the toothed meshing plate mates with the open end of the shell. The cylindrical body is fixed inside the shell on the right side, and the toothed meshing plate has a notch at the end away from the toothed part, which mates with the cylindrical body.

[0015] A sliding rod is fixed inside the lower side of the cylinder. The first magnet and the second magnet are slidably sleeved on the sliding rod. Two movable grooves penetrate the lower side of the cylinder surface. The first magnet and the second magnet are respectively movably engaged with the movable grooves on both sides. An arc-shaped groove is opened on the side of the first magnet and the second magnet that are close to each other. The upper part of the knob is threaded into the inner wall of the cylinder. The lower part of the knob has a conical structure and cooperates with the arc-shaped grooves on the first magnet and the second magnet. A cross groove is opened on the top of the knob. A rectangular groove penetrates the left side of the inside of the shell. The rectangular magnet is fixed inside the rectangular groove and cooperates with the tooth-shaped meshing plate.

[0016] The bottom of the housing has a first mounting hole and a second mounting hole, and the movable end of the rolled fabric cooperates with the first mounting hole and the second mounting hole.

[0017] The sludge calorific value conditioning machine body also includes a crusher, a herringbone sludge spreading plate, a left flushing device, a right flushing device, and a water receiving device. The crusher is installed on the left end of the frame and cooperates with the left end of the dewatering filter cloth. The herringbone sludge spreading plate is fixed on the lower side of the first mounting frame and cooperates with the spiral spreader. The left and right flushing devices are respectively installed on the left and right sides inside the frame. The water receiving device is located on the lower side inside the frame and cooperates with the dewatering component. The left and right ends of the frame are respectively fixed with a left scraper and a right scraper, and both the left and right scrapers cooperate with the dewatering filter cloth.

[0018] The dewatering assembly includes a gantry frame, an extrusion plate, and large hydraulic cylinders. Several gantry frames are welded and fixed to the machine frame. Several large hydraulic cylinders are installed on the upper surface inside the gantry frame. The telescopic ends of two adjacent large hydraulic cylinders are connected to the upper surface of the extrusion plate. The dewatering filter cloth passes through the inside of the gantry frame, and the extrusion plate is located on the upper side of the dewatering filter cloth.

[0019] The left flushing device includes a flushing pipe, a valve, and nozzles. The flushing pipe is installed inside the lower side of the frame via a pipe clamp. Several nozzles are installed on the flushing pipe, and the nozzles face the dewatering filter cloth. A water supply pipe is connected to the rear end of the flushing pipe. The valve is installed on the water supply pipe. The end of the water supply pipe away from the flushing pipe is connected to an external water supply mechanism. The right flushing device has the same structure and installation method as the left flushing device.

[0020] The water receiving device includes a water receiving tray, a water receiving trough, and an elbow. The water receiving tray is located inside the lower side of the frame and cooperates with the dewatering filter cloth and the extrusion plate. The bottom of the inner side of the water receiving tray is inclined. The water receiving trough is opened on the front side of the bottom inside the water receiving tray and has a V-shaped structure. The elbow is installed on the front side of the bottom of the water receiving tray and is connected to the water receiving trough.

[0021] The present invention has the following beneficial effects:

[0022] 1. This invention facilitates the independent rotation of the left and right drums through the cooperation of the left motor, left electromagnetic clutch, right motor, and right electromagnetic clutch. This allows for easy winding of the dewatered filter cloth onto either the left or right drum, achieving the purpose of conveying sludge towards the dewatering assembly or outputting the dewatered sludge to the left. This simplifies use and solves the problems of traditional belt drive conveying mechanisms, which are prone to slippage due to the sludge and water, and require additional tensioning mechanisms, increasing maintenance costs. It also addresses the drawbacks of some chain drive conveying mechanisms, which are complex in structure, bulky, and increase manufacturing costs. Furthermore, the chains are prone to wear and rust due to the sludge and water, leading to tooth loss and jamming, and making maintenance more difficult.

[0023] 2. This invention facilitates the fixed connection between the housing and the movable end of the rolled cloth via the first and second mounting holes. Simultaneously, the rotational engagement of the rotating shaft and the housing allows for easy adjustment of the toothed meshing plate, causing its teeth to rotate towards the housing, clamping one end of the dewatering filter cloth between the toothed meshing plate and the housing. Furthermore, the threaded engagement between the knob and the inner wall of the cylinder facilitates downward rotation of the adjustment knob. Combined with the conical structure at the bottom of the knob, the arc-shaped grooves on the surfaces of the first and second magnets, and the sliding arrangement of the first and second magnets, downward rotation of the adjustment knob... During the process, the first and second magnets are pressed outwards until they pass through the movable groove on the cylinder. This causes the ends of the first and second magnets that are far apart to move to the outside of the cylinder, providing a limiting support to the end of the toothed meshing plate that is far from the teeth. This ensures that the toothed meshing plate is pressed tightly against the surface of the filter plate, thus achieving the installation and fixation of the dewatering filter cloth. It also facilitates the quick replacement of damaged dewatering filter cloth in the later stages, solving the drawback of the existing technology where the composite filter cloth wears and is damaged after long-term use, making it impossible to quickly replace the composite filter cloth.

[0024] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of the sludge calorific value conditioning machine body in this invention;

[0027] Figure 2 This is a schematic diagram of the transmission and conveying mechanism in this invention;

[0028] Figure 3 This is a schematic diagram of the structure of the left roller in this invention;

[0029] Figure 4 This is a schematic diagram of the spiral spreader in this invention;

[0030] Figure 5 This is a schematic diagram of the structure of the mud-pressing roller in this invention;

[0031] Figure 6 This is a schematic diagram of the splicing component in the present invention;

[0032] Figure 7 for Figure 6 A schematic diagram of the bottom structure;

[0033] Figure 8 This is an exploded view of the knob and cylinder in this invention;

[0034] Figure 9 This is a schematic diagram of the assembly structure of the large hydraulic cylinder and the extrusion plate in this invention;

[0035] Figure 10 This is a schematic diagram of the left flushing device in this invention;

[0036] Figure 11 This is a schematic diagram of the water receiving device in this invention.

[0037] The attached diagram lists the components represented by each number as follows:

[0038] 1. Crusher; 2. Left scraper; 3. Spiral spreader; 3.1. First bearing housing; 3.2. Spiral blade; 3.3. First sprocket; 4. Herringbone spreading plate; 5. Left motor; 6. Pressing roller; 6.1. Second bearing housing; 6.2. Scraper; 6.3. Drum; 6.4. Second sprocket; 7. Extrusion plate; 8. Large hydraulic cylinder; 9. Right motor; 10. Right scraper; 11. Right flushing device; 12. Right drum; 13. Left drum; 13.1. Fixing plate; 13.2. Screw; 13.3. Take-up roller; 14. Left flushing device; 14.1. Flushing pipe; 14.2. Valve; 14.3 15. Sprayer head; 16. Dewatering filter cloth; 16. Water receiving device; 16.1. Water receiving tray; 16.2. Water receiving trough; 16.3. Elbow; 17. Left support roller; 18. Right support roller; 19. Right sprocket; 21. Left sprocket; 20. Right electromagnetic clutch; 22. Left electromagnetic clutch; 23. Cloth roll; 24. Splicing assembly; 24.1. Toothed meshing plate; 24.2. Cylinder; 24.3. Shell; 24.4. Rotating shaft; 24.5. First magnet; 24.6. Second magnet; 24.7. Knob; 24.8. First mounting hole; 24.9. Rectangular magnet; 24.10. Second mounting hole. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] In the description of this invention, it should be understood that the terms "upper," "middle," "outer," "inner," etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0041] Please see Figures 1-3 As shown, this invention is a bidirectional drum drive conveying structure for high-pressure dewatering of sludge, including a sludge calorific value conditioning machine body. The sludge calorific value conditioning machine body includes a frame and a dewatering component mounted on the frame. A drive conveying mechanism is provided inside the frame, cooperating with the dewatering component. A spiral spreader 3 is provided on the left side of the upper surface of the frame, and a pressing roller 6 is provided on the right side of the spiral spreader 3. The drive conveying mechanism includes:

[0042] A left drum 13 and a right drum 12 are arranged opposite each other on the left and right sides of the machine frame. The left drum 13 and the right drum 12 have the same structure. The left drum 13 includes a fixing plate 13.1, screws 13.2, and a take-up roller 13.3. The fixing plate 13.1 is welded and fixed to the take-up roller 13.3. Both the left drum 13 and the right drum 12 have rolled cloth 23, and one end of the rolled cloth 23 is connected to the fixing plate 13.1 by a few... The dry screw 13.2 is used for fixing. The movable end of the roll cloth 23 is fixed with the splicing component 24. The dewatering filter cloth 15 is connected between the two splicing components 24 on the left and right sides. The left support roller 17 and the right support roller 18 are respectively installed on the upper side of the left and right ends of the frame. The left support roller 17 and the right support roller 18 are both set inside the dewatering filter cloth 15 and are close to the dewatering filter cloth 15. The left support roller 17 and the right support roller 18 effectively support and tension the dewatering filter cloth 15.

[0043] The transmission and conveying mechanism also includes a left motor 5 and a right motor 9. The left motor 5 and the right motor 9 are respectively mounted on the left and right sides of the upper surface of the frame through the first mounting bracket and the second mounting bracket. The front ends of the left drum 13 and the right drum 12 are respectively connected to the left electromagnetic clutch 22 and the right electromagnetic clutch 20, and the front ends of the left electromagnetic clutch 22 and the right electromagnetic clutch 20 are respectively connected to the left sprocket 21 and the right sprocket 19. The output end of the left motor 5 and the left sprocket 21, and the output end of the right motor 9 and the right sprocket 19 are all connected by chain drive.

[0044] Please see Figure 4As shown, the spiral spreader 3 includes a first bearing seat 3.1, a spiral blade 3.2, and a first sprocket 3.3. Two first supports are fixed to each other on the left side of the upper surface of the frame. The first bearing seat 3.1 is installed inside the first support. A rotating rod is rotatably connected between the two first bearing seats 3.1. The spiral blade 3.2 is installed on the rotating rod. The rear end of the rotating rod passes through the rear first bearing seat 3.1 and is connected to the first sprocket 3.3. The spiral blade 3.2 facilitates the spreading of sludge conveyed on the dewatering filter cloth 15.

[0045] Please see Figure 5 As shown, the pressing roller 6 includes a second bearing seat 6.1, a scraper 6.2, a roller 6.3, and a second sprocket 6.4. A second support is provided on the right side of the first support and is fixed to the frame. The second bearing seat 6.1 is installed inside the second support. The roller 6.3 is rotatably mounted between the front and rear second bearing seats 6.1 via a rotating shaft. A connecting plate is bolted to the upper side between the front and rear second supports. The scraper 6.2 is fixed to one side of the connecting plate by several bolts, and the lower end of the scraper 6.2 cooperates with the roller 6.3. The rear end of the rotating shaft passes through the rear second bearing seat 6.1 and connects to the second sprocket 6.4. The first sprocket 3.3 and the second sprocket 6.4 are connected by a chain drive. The rear end of the second sprocket 6.4 is connected to a drive motor, which drives the second sprocket 6.4 to rotate. Under the action of the chain, the first sprocket 3.3 is driven to rotate, which in turn drives the spiral blade 3.2 and the roller 6.3 to rotate synchronously. The rotation of the roller 6.3 facilitates the preliminary compaction of the flattened sludge, which is convenient for subsequent squeezing and dewatering. The scraper 6.2 is used to scrape off the sludge adhering to the roller 6.3, preventing the sludge from sticking to the surface of the roller 6.3 and affecting the use effect of the roller 6.3.

[0046] Please see Figures 6-8As shown, the splicing assembly 24 includes a toothed meshing plate 24.1, a cylindrical body 24.2, a housing 24.3, a rotating shaft 24.4, a first magnet 24.5, a second magnet 24.6, a knob 24.7, and a rectangular magnet 24.9. A through groove is formed on the surface of the housing 24.3. The rotating shaft 24.4 is rotatably mounted inside the through groove. The toothed meshing plate 24.1 is fixed to the rotating shaft 24.4 by a connecting block, and the teeth of the toothed meshing plate 24.1 engage with the open end of the housing 24.3. The cylindrical body 24.2 is fixed inside the right side of the housing 24.3. A notch is formed at the end of the toothed meshing plate 24.1 away from the teeth, engaging with the cylindrical body 24.2. A sliding rod is fixed inside the lower side of the cylindrical body 24.5 and the second magnet 24.6 are slidably mounted on the sliding rod, and the lower side of the surface of the cylindrical body 24.2... There are two through slots, and the first magnet 24.5 and the second magnet 24.6 are respectively engaged with the through slots on both sides. The sides of the first magnet 24.5 and the second magnet 24.6 that are close to each other are provided with arc-shaped grooves. The upper part of the knob 24.7 is threaded into the inner wall of the cylinder 24.2. The lower part of the knob 24.7 has a conical structure, which is engaged with the arc-shaped grooves on the first magnet 24.5 and the second magnet 24.6. The top of the knob 24.7 is provided with a cross groove. The left side of the inside of the housing 24.3 has a rectangular groove through which the rectangular magnet 24.9 is fixed. It is engaged with the toothed meshing plate 24.1. The bottom of the housing 24.3 has a first mounting hole 24.8 and a second mounting hole 24.10 that are opposite each other. The movable end of the rolled cloth 23 is engaged with the first mounting hole 24.8 and the second mounting hole 24.10.

[0047] The sludge calorific value conditioning machine also includes a crusher 1, a herringbone sludge spreading plate 4, a left flushing device 14, a right flushing device 11, and a water receiving device 16. The crusher 1 is installed on the left end of the frame and cooperates with the left end of the dewatering filter cloth 15. The herringbone sludge spreading plate 4 is fixed on the lower side of the first mounting frame and cooperates with the spiral spreader 3. The left flushing device 14 and the right flushing device 11 are respectively installed on the left and right sides inside the frame. The water receiving device 16 is located on the lower side inside the frame and cooperates with the dewatering components. The left scraper 2 and the right scraper 10 are respectively fixed on the left and right ends of the frame, and both the left scraper 2 and the right scraper 10 cooperate with the dewatering filter cloth 15. The crusher 1 facilitates the crushing of the dewatered sludge, which is convenient for subsequent sludge transportation and incineration. The cooperation between the left scraper 2 and the right scraper 10 facilitates the scraping of residual sludge on the dewatering filter cloth 15, which is convenient for subsequent cleaning and continued use.

[0048] Please see Figure 9As shown, the dewatering assembly includes a gantry frame, an extrusion plate 7, and large hydraulic cylinders 8. Several gantry frames are welded and fixed on the machine frame, and several large hydraulic cylinders 8 are installed on the upper surface inside the gantry frame. The telescopic ends of two adjacent large hydraulic cylinders 8 are connected to the upper surface of the extrusion plate 7. The dewatering filter cloth 15 passes through the inner side of the gantry frame, and the extrusion plate 7 is set on the upper side of the dewatering filter cloth 15.

[0049] Please see Figure 10 As shown, the left rinsing device 14 includes a rinsing pipe 14.1, a valve 14.2, and a nozzle 14.3. The rinsing pipe 14.1 is installed inside the lower side of the frame by a pipe clamp. Several nozzles 14.3 are installed on the rinsing pipe 14.1, and the nozzles 14.3 face the dewatering filter cloth 15. A water supply pipe is connected to the rear end of the rinsing pipe 14.2 is installed on the water supply pipe. The end of the water supply pipe away from the rinsing pipe 14.1 is connected to an external water supply mechanism. The right rinsing device 11 has the same structure and installation method as the left rinsing device 14. The left rinsing device 14 and the right rinsing device 11 facilitate the cleaning of the dewatering filter cloth 15.

[0050] Please see Figure 11 As shown, the water receiving device 16 includes a water receiving tray 16.1, a water receiving trough 16.2, and an elbow 16.3. The water receiving tray 16.1 is located inside the lower side of the frame and cooperates with the dewatering filter cloth 15 and the extrusion plate 7. The bottom of the inner side of the water receiving tray 16.1 is an inclined surface. The water receiving trough 16.2 is opened on the front side of the bottom inside the water receiving tray 16.1 and has a V-shaped structure. The elbow 16.3 is installed on the front side of the bottom of the water receiving tray 16.1 and is connected to the water receiving trough 16.2.

[0051] Example:

[0052] First, pull out the movable ends of the rolled cloth 23 on the left drum 13 and the right drum 12. Under the action of the first mounting hole 24.8 and the second mounting hole 24.10, fix the splicing assembly 24 to the movable end of the rolled cloth 23 with bolts. Then, insert the end of the dewatering filter cloth 15 into the housing 24.3 and press the teeth of the toothed meshing plate 24.1 downward. Under the adsorption of the toothed meshing plate 24.1 by the rectangular magnet 24.9, the toothed meshing plate 24.1 is initially adsorbed and fixed, so that the dewatering filter cloth 15 is pressed into the housing 24.3.

[0053] Next, by using the cross groove at the upper end of knob 24.7, adjust knob 24.7 to rotate inwards towards the cylinder 24.2. Combined with the conical structure at the lower part of knob 24.7 and the arc-shaped grooves on the surfaces of the first magnet 24.5 and the second magnet 24.6, as knob 24.7 continues to rotate downwards, and with the sliding arrangement of the first magnet 24.5 and the second magnet 24.6, they are pressed to both sides until they pass through. The movable groove on the surface of the cylinder 24.2 extends to the outside of the cylinder 24.2 and supports and limits the lower surface of the tail of the toothed meshing plate 24.1, thereby making the toothed meshing plate 24.1 press one end of the dewatering filter cloth 15 tightly and stably inside the housing 24.3. The other end of the dewatering filter cloth 15 is fixed in the same way, thus realizing the installation and fixation of the dewatering filter cloth 15. Then, the left roller 13 or the right roller 12 is adjusted to wind up the cloth 23, so that the dewatering filter cloth 15 is in a taut state.

[0054] During the dewatering process, the sludge to be treated falls onto the dewatering filter cloth 15 through the left feed end. During the sludge feeding and dewatering, the right motor 9 is started, the left electromagnetic clutch 22 is de-energized and in the open state, the right electromagnetic clutch 20 is energized and in the closed state, the right sprocket 19 is in the active state and rotates clockwise, and the left sprocket 21 is in the driven state and rotates clockwise. The right drum 12 drives the dewatering filter cloth 15 to the right by winding. The sludge on the dewatering filter cloth 15 passes through the spiral spreader 3, the herringbone sludge spreading plate 4 and the pressing roller 6 in sequence, spreading the sludge to both sides and performing preliminary pre-compression treatment. Then it is sent into the inner side of the gantry frame, and the large oil cylinder 8 pushes the extrusion plate 7 down to compress the sludge on the dewatering filter cloth 15.

[0055] The squeezed-out wastewater falls downward into the water receiving pan 16.1. Combined with the inclined surface of the bottom inner side of the water receiving pan 16.1, the wastewater falling into the water receiving pan 16.1 flows into the water receiving trough 16.2 and is finally discharged outward through the elbow 16.3.

[0056] After the sludge dewatering is completed, the left motor 5 is started, the right electromagnetic clutch 20 is de-energized and in the open state, the left electromagnetic clutch 22 is energized and in the closed state, the left drum 13 is in the active state and rotates counterclockwise, the right drum 12 is in the driven state and rotates counterclockwise, the left drum 13 drives the dewatering filter cloth 15 to the left by winding, the dewatering filter cloth 15 drives the dewatered sludge to the left and outputs it, and finally the sludge output to the left is broken up by the crusher 1.

[0057] The function of the left electromagnetic clutch 22 and the right electromagnetic clutch 20 is to prevent the rotation of the driven drum from causing the sprocket and chain to rotate, which would lead to the high-speed operation of the motor, damage the motor, and reduce its service life. The electromagnetic clutches can disconnect the driven drum from the sprocket, thus preventing the motor from rotating at high speed.

[0058] The present invention adopts a bidirectional drum drive conveying structure for the input and output of sludge. During feeding, the right motor 9 drives the right drum 12 to rotate clockwise, while the left drum 13 is in a driven state. The drum is used to drive the dewatering filter cloth 15 to transport the sludge to the right by winding the belt.

[0059] During discharge, the left motor 5 drives the left drum 13 to rotate counterclockwise, while the right drum 12 is in a driven state. The drum drives the dewatered filter cloth 15 to output the dewatered sludge to the left by winding the belt. This solves the problems of slippage and the need for an additional tensioning mechanism caused by the sludge water in the traditional belt drive conveyor. It also solves the disadvantages of the chain drive conveyor, such as complex overall structure and susceptibility to rust, jamming, and tooth breakage.

[0060] Meanwhile, the splicing component 24 facilitates the installation and fixation of the dewatering filter cloth 15. When replacing the dewatering filter cloth 15, simply turn the knob 24.7 upwards. Under the mutual attraction of the first magnet 24.5 and the second magnet 24.6, the first magnet 24.5 and the second magnet 24.6 approach each other and move into the cylinder 24.2. Then, press the tail of the toothed meshing plate 24.1 downwards, so that the teeth of the toothed meshing plate 24.1 are lifted upwards, and the dewatering filter cloth 15 can be taken out for replacement. This solves the problem in the prior art that after long-term use, the composite filter cloth will wear and be damaged, making it impossible to quickly replace the composite filter cloth, which affects the normal use of the device and the sludge conveying efficiency, and makes it more convenient to use.

[0061] Only the dewatering filter cloth 15 is under long-term compression. The cloth 23 wound on the left drum 13 and the right drum 12 only needs to be wound and does not need to be compressed. There are no strict requirements for water permeability and compression strength. Other materials can be used as substitutes depending on the actual situation. When the dewatering filter cloth 15 is damaged by repeated compression, only the dewatering filter cloth 15 needs to be replaced. There is no need to replace the entire conveyor belt, which effectively reduces the use and replacement cost of the dewatering filter cloth 15.

[0062] It should be further explained that the installation structure, connection method or setting method of each component in this invention are all common mechanical methods. As long as they can achieve their beneficial effects, they can be implemented. At the same time, the large hydraulic cylinder 8, left motor 5, right motor 9, left electromagnetic clutch 22 and right electromagnetic clutch 20 in this invention are all purchased from the market. Those skilled in the art can install and use them according to the requirements.

[0063] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A bidirectional drum-driven conveying structure for high-pressure dewatering of sludge, comprising a sludge calorific value conditioning machine body, wherein the sludge calorific value conditioning machine body includes a frame and a dewatering assembly mounted on the frame, characterized in that, The inner side of the frame is provided with a transmission and conveying mechanism, which cooperates with the dewatering component. A spiral spreader (3) is provided on the left side of the upper surface of the frame, and a pressing roller (6) is provided on the right side of the spiral spreader (3). The transmission and conveying mechanism includes: A left drum (13) and a right drum (12) are arranged opposite each other on the left and right sides inside the frame. The left drum (13) and the right drum (12) have the same structure. The left drum (13) includes a fixing plate (13.1), screws (13.2) and a take-up roller (13.3). The fixing plate (13.1) is welded and fixed to the take-up roller (13.3). Both the left drum (13) and the right drum (12) have rolled cloth (23) wound on them. One end of the rolled cloth (23) is fixed to the fixing plate (13.1) by several screws (13.2). The movable end of the rolled cloth (23) is fixed with a splicing component (24). The two splicing components (24) are connected to each other. The frame is fitted with a dewatering filter cloth (15). A left support roller (17) and a right support roller (18) are respectively installed on the upper sides of the left and right ends of the frame. The left support roller (17) and the right support roller (18) are both located inside the dewatering filter cloth (15) and are close to the dewatering filter cloth (15). The transmission and conveying mechanism also includes a left motor (5) and a right motor (9). The left motor (5) and the right motor (9) are respectively installed on the left and right sides of the upper surface of the frame through a first mounting frame and a second mounting frame. The front ends of the left drum (13) and the right drum (12) are respectively connected to a left electromagnetic clutch (22) and a right electromagnetic clutch (20), and the front ends of the left electromagnetic clutch (22) and the right electromagnetic clutch (20) are respectively connected to a left sprocket (21) and a right sprocket. (19) The output end of the left motor (5) and the left sprocket (21) and the output end of the right motor (9) and the right sprocket (19) are connected by chain drive. The splicing assembly (24) includes a toothed meshing plate (24.1), a cylinder (24.2), a shell (24.3), a rotating shaft (24.4), a first magnet (24.5), a second magnet (24.6), a knob (24.7), and a rectangular magnet (24.9). The surface of the shell (24.3) has a through groove. The rotating shaft (24.4) is rotatably installed inside the through groove. The toothed meshing plate (24.1) is fixed to the rotating shaft (24.4) by a connecting block. The teeth of the toothed meshing plate (24.1) are connected to the shell (24.3). The opening end of the cylinder (24.2) is matched with the opening end of the shell (24.3). The cylinder (24.2) is fixed inside the right side of the shell (24.3). The tooth-shaped meshing plate (24.1) has a notch at one end away from the tooth part, which matches the cylinder (24.2). A sliding rod is fixed inside the lower side of the cylinder (24.2). The first magnet (24.5) and the second magnet (24.6) are slidably sleeved on the sliding rod. There are two movable grooves through the lower side of the surface of the cylinder (24.2). The first magnet (24.5) and the second magnet (24.6) are movably matched with the movable grooves on both sides. The sides of the first magnet (24.5) and the second magnet (24.6) that are close to each other are provided with arc-shaped grooves. The upper part of the knob (24.7) is connected to the cylinder (24.3).2) The inner wall is threaded. The lower part of the knob (24.7) has a conical structure, which cooperates with the arc-shaped grooves on the first magnet (24.5) and the second magnet (24.6). The top of the knob (24.7) has a cross groove. A rectangular groove runs through the left side of the inside of the housing (24.3). The rectangular magnet (24.9) is fixed inside the rectangular groove and cooperates with the toothed meshing plate (24.1). The bottom of the housing (24.3) has a first mounting hole (24.8) and a second mounting hole (24.10) facing each other. The movable end of the rolled cloth (23) cooperates with the first mounting hole (24.8) and the second mounting hole (24.10).

2. The bidirectional drum drive conveying structure for high-pressure dewatering of sludge according to claim 1, characterized in that, The spiral spreader (3) includes a first bearing seat (3.1), a spiral blade (3.2), and a first sprocket (3.3). Two first supports are fixed to each other on the left side of the upper surface of the frame. The first bearing seat (3.1) is installed inside the first support. A rotating rod is rotatably connected between the two first bearing seats (3.1) in the front and rear. The spiral blade (3.2) is installed on the rotating rod. The rear end of the rotating rod passes through the first bearing seat (3.1) on the rear side and is connected to the first sprocket (3.3).

3. The bidirectional drum drive conveying structure for high-pressure dewatering of sludge according to claim 2, characterized in that, The pressing roller (6) includes a second bearing seat (6.1), a scraper (6.2), a drum (6.3), and a second sprocket (6.4). A second support is provided on the right side of the first support and is fixed on the frame. The second bearing seat (6.1) is installed inside the second support. The drum (6.3) is rotatably installed between the front and rear second bearing seats (6.1) via a rotating shaft. A connecting plate is fixed to the upper side of the front and rear second supports by bolts. The scraper (6.2) is fixed to one side of the connecting plate by several bolts, and the lower end of the scraper (6.2) cooperates with the drum (6.3). The rear end of the rotating shaft passes through the rear second bearing seat (6.1) and is connected to the second sprocket (6.4). The first sprocket (3.3) and the second sprocket (6.4) are connected by chain drive. A drive motor is connected to the rear end of the second sprocket (6.4).

4. The bidirectional drum drive conveying structure for high-pressure dewatering of sludge according to claim 3, characterized in that, The sludge calorific value conditioning machine body also includes a crusher (1), a herringbone sludge spreading plate (4), a left flushing device (14), a right flushing device (11), and a water receiving device (16). The crusher (1) is installed on the left end of the frame and cooperates with the left end of the dewatering filter cloth (15). The herringbone sludge spreading plate (4) is fixed on the lower side of the first mounting frame and cooperates with the spiral spreader (3). The left flushing device (14) and the right flushing device (11) are respectively installed on the left and right sides inside the frame. The water receiving device (16) is set on the lower side inside the frame and cooperates with the dewatering component. The left scraper (2) and the right scraper (10) are respectively fixed on the left and right ends of the frame, and the left scraper (2) and the right scraper (10) cooperate with the dewatering filter cloth (15).

5. The bidirectional drum drive conveying structure for high-pressure dewatering of sludge according to claim 4, characterized in that, The dewatering assembly includes a gantry frame, an extrusion plate (7), and large oil cylinders (8). Several gantry frames are welded and fixed on the machine frame. Several large oil cylinders (8) are installed on the upper surface inside the gantry frame. The telescopic ends of two adjacent large oil cylinders (8) are connected to the upper surface of the extrusion plate (7). The dewatering filter cloth (15) passes through the inside of the gantry frame, and the extrusion plate (7) is set on the upper side of the dewatering filter cloth (15).

6. The bidirectional drum drive conveying structure for high-pressure dewatering of sludge according to claim 5, characterized in that, The left flushing device (14) includes a flushing pipe (14.1), a valve (14.2), and a nozzle (14.3). The flushing pipe (14.1) is installed inside the lower side of the frame by a pipe clamp. Several nozzles (14.3) are installed on the flushing pipe (14.1) and the nozzles (14.3) face the dewatering filter cloth (15). The rear end of the flushing pipe (14.1) is connected to a water supply pipe. The valve (14.2) is installed on the water supply pipe. The end of the water supply pipe away from the flushing pipe (14.1) is connected to an external water supply mechanism. The right flushing device (11) has the same structure and installation method as the left flushing device (14).

7. The bidirectional drum drive conveying structure for high-pressure dewatering of sludge according to claim 6, characterized in that, The water receiving device (16) includes a water receiving tray (16.1), a water receiving trough (16.2), and an elbow (16.3). The water receiving tray (16.1) is located inside the lower side of the frame and cooperates with the dewatering filter cloth (15) and the extrusion plate (7). The bottom of the inner side of the water receiving tray (16.1) is an inclined surface. The water receiving trough (16.2) is opened on the front side of the bottom inside the water receiving tray (16.1) and the water receiving trough (16.2) has a V-shaped structure. The elbow (16.3) is installed on the front side of the bottom of the water receiving tray (16.1) and is connected to the water receiving trough (16.2).

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