Skid-mounted sludge dryer

Abstract

This invention relates to a stacked sludge dryer, and more particularly to a skid-mounted stacked sludge dryer. The skid-mounted sludge dryer provided by this invention allows for efficient transportation, assembly, and disassembly without removing the components of the first skid assembly from the first frame or the components of the second skid assembly from the second frame. Only the connection between the components of the first and second skid assemblies needs to be disconnected, for example, by removing the connecting hoses. This results in high efficiency in transportation, assembly, and disassembly.

Description

Technical Field

[0001] This invention relates to a stacked sludge dryer, and more particularly to a skid-mounted stacked sludge dryer. Background Technology

[0002] The basic structure and principle of the stacked sludge dryer are described in patent document CN221094005U. The stacked sludge dryer is characterized by its sludge dewatering method. It includes a stacked filter press, a secondary material spreading trolley, and a sludge recovery device. The upper body of the secondary material spreading trolley moves back and forth, causing the filter cloth to stack repeatedly within the feed cylinder of the stacked filter press, with the sludge sandwiched between the layers formed by the stacked filter cloth. The hydraulic device of the stacked filter press compresses the stacked filter cloth and sludge, squeezing out the water from the sludge and discharging it from the feed cylinder. Afterward, the filter cloth is recovered by a roller frame device, with the sludge side facing down. The dried sludge falls off the filter cloth and into the feed trough of the sludge recovery device.

[0003] Stacked sludge dryers contain many components, making transportation, assembly, and disassembly quite troublesome. Summary of the Invention

[0004] The technical problem to be solved by this invention is how to improve the convenience of transporting, assembling and disassembling stacked sludge dryers.

[0005] To solve the above-mentioned technical problems, the inventors of this invention have planned the arrangement of the devices contained in the stacked sludge dryer and proposed a skid-mounted stacked sludge dryer, which improves the convenience of transportation, assembly and disassembly of the stacked sludge dryer.

[0006] This invention provides a skid-mounted sludge dryer, comprising a first skid-mounted assembly, a second skid-mounted assembly, and connecting hoses. The first skid-mounted assembly includes a first frame with a cuboid structure. Within the first frame, from back to front, are sequentially arranged a roller frame device for conveying filter cloth and a stacked filter press for dewatering sludge. The roller frame device includes a sub-frame and roller groups mounted on the sub-frame, and the sub-frame is fixedly connected to the first frame. The stacked filter press includes a frame, a hydraulic device, a material cylinder, and a cloth pressing mechanism, and the frame is fixedly connected to the first frame. The first frame also includes a secondary material spreading trolley, a feeding hose, a diversion rigid pipe, and a sludge recovery device. The sludge recovery device includes a sludge recovery trough and a sludge recovery conveying mechanism for collecting dried sludge; the secondary material spreading trolley includes an upper trolley body and a lower trolley body that can move relative to each other, and a diversion hard pipe is connected to the upper trolley body through a feeding hose; the second skid-mounted assembly includes a second frame with a cuboid structure, and a sludge pumping device is installed in the second frame. The sludge pumping device is fixedly connected to the second frame, and the connecting hose is detachably connected to the diversion hard pipe and the sludge pumping device respectively, so that the sludge pumping device can output the sludge to be dried sequentially through the connecting hose, the diversion hard pipe, the feeding hose and the upper trolley body to the filter cloth.

[0007] The skid-mounted sludge dryer provided by this invention does not require removing the devices contained in the first skid assembly from the first frame or the devices contained in the second skid assembly from the second frame during transportation, assembly, and disassembly. It only requires disconnecting the connection between the devices contained in the first skid assembly and the devices contained in the second skid assembly, for example, by removing the connecting hose. This results in high efficiency in transportation, assembly, and disassembly.

[0008] A hydraulic oil tank mounting bracket is provided on the upper side of the first frame, and the hydraulic oil tank of the hydraulic device is located on the hydraulic oil tank mounting bracket. To facilitate the maintenance of the devices contained in the first skid-mounted assembly, the skid-mounted sludge dryer also includes a maintenance frame, which includes a ladder, a footboard, and a guardrail. The footboard is arranged around the upper side of the first frame, and the inner side of the footboard is detachably fixed to the outer side of the first frame. The guardrail is located on the outer side of the footboard, and the guardrail has a notch corresponding to the ladder. The ladder is used to connect the footboard to the ground.

[0009] To facilitate the hoisting and handling of the first skid assembly and the second skid assembly, lifting lugs are provided on the first frame and the second frame.

[0010] In addition to the cuboid structural skeleton composed of horizontal and vertical pipes, the first frame also includes a base plate, which is fixed to the lower side of the first frame to secure the diversion rigid pipe. The lower part of the sub-frame and the diversion rigid pipe are fixed to the base plate. The diversion rigid pipe is located inside the sub-frame, with its inlet end connected to the connecting hose and its outlet end connected to the feeding hose.

[0011] Based on the structural design of the secondary material spreading trolley, the installation position of the secondary material spreading trolley is determined. For example, the secondary material spreading trolley also includes a bottom support frame, which is fixed to the sub-frame and the machine frame. A bottom optical axis track is provided on the upper side of the bottom support frame, extending forward from inside the sub-frame to the rear of the machine frame. The bottom trolley body can be mounted on the bottom optical axis track in a back-and-forth motion, allowing it to move forward from inside the sub-frame to the mud spreading position. An upper optical axis track is provided on the upper side of the bottom trolley body, allowing the upper trolley body to be mounted on the upper optical axis track in a back-and-forth motion, enabling it to spread mud relative to the bottom trolley body after the bottom trolley body has moved to the mud spreading position. This secondary material spreading trolley has a compact structure, and the optical axis track guides the back-and-forth movement of the bottom and upper trolley bodies, improving the trolley's movement performance when the weight is unevenly distributed in the front-to-back direction.

[0012] To make the frame and subframe more stable and less prone to shaking, the lower part of the frame is fixedly connected to the lower side of the first frame, and the upper part of the frame and the upper part of the subframe are respectively fixedly connected to the inner side of the first frame.

[0013] The roller assembly includes a floating roller located at the front of the sub-frame. Preferably, the floating roller is mounted on a floating seat, and a drive device for adjusting the vertical position of the floating seat is installed on the sub-frame. The roller frame assembly also includes a sludge scraping mechanism, which includes a scraper and a tension spring. The scraper is rotatably connected to the floating seat, thus moving up and down together with the floating roller. The tension spring is connected to both the sub-frame and the scraper, so that when the floating seat moves upward, it pulls the scraper to rotate, causing the scraper to press against the filter cloth passing between the scraper and the floating roller, thus scraping off the sludge from the filter cloth. The drive device allows for precise and convenient electronic adjustment of the floating roller's position, changing the tilt angle of the filter cloth during dry sludge recovery to the optimal angle for the current sludge. The sludge scraping mechanism removes residual dry sludge that has not naturally detached from the filter cloth, improving sludge recovery rate and filter cloth cleanliness.

[0014] The sub-frame is equipped with a winding mechanism for winding the filter cloth and an edge suction device for aligning the filter cloth with the winding mechanism during the winding process. The pressure of the scraper on the filter cloth during the recovery of dry mud also helps the edge suction device to correct the deviation of the filter cloth, improving the neatness of the recovered filter cloth on the winding mechanism.

[0015] To enable online cleaning of the filter cloth and improve operational efficiency, a cleaning device is also installed on the sub-frame for cleaning the filter cloth during recycling. The sub-frame contains a washing space, with a front baffle, an upper baffle, a water collection tray, a left baffle, and a right baffle on its front, upper, lower, left, and right sides, respectively. A roller assembly transports the filter cloth from the rear upper to the front lower within this washing space, dividing it into a front upper space and a rear lower space. The cleaning device includes an upper water spray device and an upper support plate located in the front upper space, and a lower water spray device and a lower support plate located in the rear lower space. The upper support plate is positioned opposite the lower water spray device, and the lower support plate is positioned opposite the upper water spray device. The upper and lower support plates support the filter cloth when it is sprayed with water by the upper and lower water spray devices. The upper and lower support plates have drainage holes. The water collection tray has a drain outlet for drainage. The spraying directions of the upper and lower water spraying devices are adjustable, as are the distances between the upper support plate and the lower water spraying device, and between the lower support plate and the upper water spraying device. This allows the angle and distance at which the cleaning device washes the filter cloth to be adjusted to accommodate different types of sludge.

[0016] The second frame also includes a clean water tank, a cleaning pump, a self-priming pump, a sludge mixing device, a sludge transfer pump, a chemical mixing tank, and a chemical transfer pump. The cleaning pump and the self-priming pump are connected to the clean water tank respectively. The cleaning pump is detachably connected to the cleaning device to supply water to it. When disassembling the first and second skid assemblies, the connection between the cleaning pump and the cleaning device must be disconnected. The self-priming pump is connected to the sludge mixing device to add water to it. The chemical transfer pump connects the chemical mixing tank and the sludge mixing device to add chemicals from the mixing tank to the mixing device. The sludge transfer pump connects the sludge mixing device and the sludge pumping device to transfer the mixed sludge from the mixing device to the pumping device.

[0017] To facilitate observation of the sludge pumping device and sludge mixing device, the second skid-mounted assembly includes a ladder. The feed end of the diversion rigid pipe is positioned towards the left side of the first frame, and the discharge port of the sludge pumping device is positioned towards the right side of the second frame, allowing the first and second skid-mounted assemblies to be arranged side-by-side at close range. The chemical mixing tank and the clean water tank are located side-by-side in front of the sludge pumping device. The sludge pumping device includes a first device in a left-right direction and a second device in a front-back direction. The second device is located to the right front of the first device. The sludge mixing device and the ladder are located to the left of the second device, with the sludge mixing device in front of the ladder. The sludge conveying pump, self-priming pump, chemical conveying pump, and cleaning pump are located in front of the sludge mixing device and the second device. The chemical mixing tank and the clean water tank are located in front of the sludge conveying pump, self-priming pump, chemical conveying pump, and cleaning pump. Attached Figure Description

[0018] Figure 1 This is a perspective view of a skid-mounted sludge dryer according to an embodiment of the present invention;

[0019] Figure 2 for Figure 1 The diagram shown is an exploded view of the skid-mounted sludge dryer.

[0020] Figure 3 for Figure 2 An exploded view of the first skid assembly shown.

[0021] Figure 4 for Figure 2 An exploded view of the second skid assembly shown.

[0022] Figure 5 and 6 respectively transportation Figure 2 Side and top views of the first skid assembly shown;

[0023] Figure 7 and 8 respectively transportation Figure 2 Side and top views of the second skid assembly shown;

[0024] Figure 9-1 and 9-2 They are respectively Figure 3 Three-dimensional views of the roller frame device from different perspectives;

[0025] Figure 9-3 for Figure 3 An exploded view of the roller frame device shown.

[0026] Figure 9-4 for Figure 3 A cross-sectional view of the roller frame assembly and filter cloth shown;

[0027] Figure 9-5 for Figure 3 A perspective view of the roller frame assembly after the upper, left, and right baffles have been removed;

[0028] Figure 9-6 for Figure 9-4 The diagram shows the upper and lower water spraying devices spraying water in the direction of filter cloth conveying. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and one embodiment thereof.

[0030] See Figure 1A skid-mounted sludge dryer includes a first skid assembly A, a second skid assembly B, a maintenance frame C, and a connecting hose D. The maintenance frame C is detachably fixed to the frame (first frame A1) of the first skid assembly A, facilitating personnel observation and maintenance of the devices contained in the first skid assembly A. The maintenance frame C includes a ladder C1, a footboard C2, and a guardrail C3. The footboard C2 is arranged around the upper side of the first skid assembly A for personnel to walk on. The inner side of the footboard C2 is detachably fixed to the outer side of the first frame A1. The guardrail C3 is located on the outer side of the footboard C2 to prevent personnel from slipping and falling. The guardrail C3 has a notch corresponding to the ladder C1. The ladder C1 connects the footboard C2 to the ground, facilitating personnel to climb onto the footboard C2. For ease of transportation, the ladder C1, footboard C2, and guardrail C3 are all modular structures.

[0031] The first skid-mounted assembly A includes a diversion rigid pipe A2, with its inlet end facing the left side of the first skid-mounted assembly A. The second skid-mounted assembly B includes a sludge pumping device B2, with its outlet end facing the right side of the second skid-mounted assembly B. The inlet end of the diversion rigid pipe A2 and the outlet end of the sludge pumping device B2 are connected via a connecting hose D. Sludge output from the sludge pumping device B2 is fed into the diversion rigid pipe A2 via the connecting hose D, thus realizing the transfer of sludge from the second skid-mounted assembly B to the first skid-mounted assembly A. See also Figure 2 Since the connecting hose D is a flexible hose rather than a rigid pipe, even if the feed end of the diversion rigid pipe A2 is not aligned with the discharge end of the sludge pumping device B2, the diversion rigid pipe A2 can still be smoothly connected to the sludge pumping device B2 using the connecting hose D, which improves the flexibility of the placement of the first skid assembly A and the second skid assembly B.

[0032] See Figure 3 The first skid-mounted assembly A contains devices installed within a rectangular frame A1. The first frame A1 is a frame composed of horizontal and vertical tubes, with short inclined tubes used for reinforcement at the connection points. A base plate A11 is located on the lower side of the first frame A1, with mounting holes for fixing the roller frame assembly A3 and the diversion rigid pipe A2. A mounting position for the filter press A4 is also located on the lower side of the first frame A1, where the frame of the filter press A4 is fixed. To prevent the filter press A4 and roller frame assembly A3 from shaking during transport and operation, a short horizontal tube A12 is provided on the upper side of the first frame A1 for fixing the left and right sides of the filter press A4 and roller frame assembly A3 to the inner side of the first frame A1.

[0033] The sludge recovery trough A61 of the sludge recovery device A6 is fixedly connected between the filter press A4 and the roller frame device A3 and the lower side of the first frame A1. The sludge recovery device A6 also includes a sludge recovery conveying mechanism A62 located on the right side of the sludge recovery trough A61 and the filter press A4. The rear end of the sludge recovery conveying mechanism A62 is connected to the sludge recovery trough A61, and the front end of the sludge recovery conveying mechanism A62 extends out of the first frame A1.

[0034] Filter press A4 is a stacked filter press, including a frame A41, a hydraulic device A42, a filter cylinder A43, and a cloth pressing mechanism. The hydraulic device A42 includes a hydraulic cylinder and a hydraulic oil tank. A hydraulic oil tank mounting bracket A13 for mounting the hydraulic oil tank is provided on the upper side of the first frame A1. The filter cylinder A43 is used to hold the folded filter cloth and the sludge laid on the filter cloth. The hydraulic cylinder is used to compress the stacked filter cloth and sludge in the filter cylinder A43 in the vertical direction, so that the water in the sludge is squeezed out and discharged from the filter cylinder A43 through the drain pipe t1 connected to the right side of the filter cylinder A43. The cloth pressing mechanism is used to press the filter cloth tightly during folding and assists in the folding of the filter cloth. A lifting platform is provided inside the filter cylinder A43 to support the stacked filter cloth and sludge. The structure and principle of filter press A4 can be found in patent document CN221094005U.

[0035] See Figures 9-1 to 9-4 The roller frame device A3 includes a sub-frame A31, on which roller groups A32 are mounted. Roller groups A32 are distributed both outside and inside the sub-frame A31 for conveying the filter cloth 100. Except for a floating roller A321, the positions of the other rollers in roller group A32 are fixed. The floating roller A321 is located at the front of the sub-frame A31 and its position is controlled by a drive device A323. When the floating roller A321 is in different positions in the vertical direction, the tilt angle of the filter cloth 100 from the feed cylinder A43 to the floating roller A321 is different. In addition to roller group A32, the sub-frame A31 also includes a winding mechanism A34, an edge suction device A35, and a spreading roller A36. The front end of the filter cloth 100 is fixed on the lifting platform inside the material cylinder A34. When the sludge is laid, the filter cloth 100 is pulled forward from the winding mechanism A34. After the filter press A4 dries the sludge, the winding mechanism A34 retracts the filter cloth 100 from the material cylinder A43. Before retracting the filter cloth, the position of the floating roller A321 is adjusted to change the tilt angle of the filter cloth 100 from the material cylinder A43 to the floating roller A321, so that the tilt angle is most suitable for the current dry sludge to fall off.

[0036] A floating roller A321 is mounted on a floating seat A322. A drive device A323 is directly connected to the floating seat A322. By causing the floating seat A322 to float up and down, the position of the floating roller A321 is changed. The roller frame device A3 also includes a sludge scraping mechanism A37, which includes a scraper A371 and a tension spring A372. The scraper A371 is rotatably connected to the floating seat A322, so that it moves up and down together with the floating roller A321. The tension spring A372 is connected to the sub-frame A31 and the scraper A371 respectively, so that when the floating seat A322 moves up, it pulls the scraper A371 to rotate, so that the scraper A371 presses against the filter cloth 100 passing between the scraper A371 and the floating roller A321, and scrapes off the residual sludge on the filter cloth 100.

[0037] A cleaning device A33 is provided on the sub-frame A31 for cleaning the filter cloth 100 during filter cloth recycling. The cleaning of the filter cloth 100 by the cleaning device A33 occurs in the cloth washing space A310 within the sub-frame A31. The roller group A32 causes the filter cloth 100 to meander within the cloth washing space A310, conveying it from the rear upper to the front lower, thus dividing the cloth washing space A310 into a front upper space and a rear lower space. The cleaning device A33 includes a water supply pipe A331 fixed on the sub-frame A31, an upper water spray device A332 and an upper support plate A333 located in the front upper space, and a lower water spray device A334 and a lower support plate A335 located in the rear lower space. The upper support plate A333 is arranged opposite to the lower water spray device A334, and the lower support plate A335 is arranged opposite to the upper water spray device A332. To thoroughly clean the filter cloth 100, the upper water spray device A332 and the lower water spray device A334 are high-pressure water spray devices, exerting a significant impact force on the filter cloth 100. The upper support plate A333 and the lower support plate A335 are used to support the filter cloth 100 when the upper water spray device A332 and the lower water spray device A334 spray water onto the filter cloth 100. See also Figure 9-3 The upper support plate A333 and the lower support plate A335 are densely covered with drainage holes h. The upper water spraying device A332 and the lower water spraying device A334 have a row of nozzles n. The nozzles n of the upper water spraying device A332 face downwards and backwards, while the nozzles n of the lower water spraying device A334 face upwards and forwards. See also Figure 9-5 Both the upper spray device A332 and the lower spray device A334 are fixed to the sub-frame A31 by locking components (including U-bolts u and corresponding nuts and washers). After loosening the locking components, the orientation of the nozzle n can be changed by twisting the upper spray device A332 and the lower spray device A334, so that the nozzle n sprays water towards the filter cloth conveying direction i. The water flow collides head-on with the sludge on the filter cloth 100. Compared with rinsing along the filter cloth conveying direction i, rinsing towards the sludge makes it easier to remove the sludge from the filter cloth 100. On the other hand, when rinsing towards the filter cloth conveying direction i, compared with... Figure 9-4As shown, the water flow is perpendicular to the filter cloth 100 and can cover a larger area of ​​the filter cloth 100 surface, thus cleaning the filter cloth 100 more thoroughly. The water flow can also wash away the sludge against the filter cloth conveying direction i, and the sludge mixed in the water flows away from the left and right sides of the filter cloth 100.

[0038] See Figure 9-5 The support plates (upper support plate A333 / lower support plate A335) are mounted on the water spraying device (lower water spraying device A334 / upper water spraying device A332) via connecting components (including left and right connecting plates p). The connecting plates p are fixed to the water spraying device by the first fixing component (including two bolts s arranged opposite each other). After loosening the bolts s, the connecting plates p and the support plates can rotate together relative to the water spraying device. Therefore, after adjusting the water spraying direction of the water spraying device, the support plate can still be parallel to the filter cloth. The connecting plate p has multiple slotted holes p1. The support plate is fixed to the connecting plate p by the second fixing component (including bolts passing through the slotted holes p1 and corresponding nuts), so that the distance between the support plate and the nozzle n is also adjustable. A suitable distance can ensure that the water flow reaches the filter cloth 100 with a suitable speed and impact force. If the distance is too large and the spray height is too high, the speed of the water flow will gradually decrease under the action of gravity, and the impact force when it reaches the filter cloth 100 will be insufficient, and it will not be able to effectively wash away the impurities on the filter cloth 100. Conversely, if the spacing is too small and the spray height is too low, the water flow impact force may be too strong, potentially damaging the filter cloth 100. This could cause fiber breakage or enlargement of the filter cloth 100's pores, affecting its filtration accuracy and service life. On the other hand, a suitable spray height ensures that the water flow evenly covers the surface of the filter cloth 100 along its width. An inappropriate height will result in uneven water distribution, with some areas not being rinsed, thus reducing the overall rinsing quality.

[0039] To prevent water from spraying outside the washing space A310, a front baffle plate a1, an upper baffle plate a2, a left baffle plate a3, and a right baffle plate a4 are respectively installed on the front, upper, left, and right sides of the washing space A310. A water collection tray a5 is installed on the lower side of the washing space A310 to collect the wastewater after rinsing the filter cloth 100. The water collection tray a5 is equipped with a drain outlet for drainage. The drain pipe t2 connected to the drain outlet is connected to the drain pipe t1 connected to the material cylinder A43. The wastewater from both sources is collected and discharged together for treatment. The water source for the cleaning device A33 is the clean water tank B3 located in the second frame B1. The clean water in the clean water tank B3 is transported to the cleaning device A33 through the cleaning pump B4 located behind the clean water tank B3.

[0040] The first skid-mounted assembly A also includes a secondary material spreading trolley A5. The secondary material spreading trolley A5 includes a bottom support A51, which is fixed on the sub-frame A31 and the frame A41. A bottom optical axis track A52 is provided on the upper side of the bottom support A51. The bottom optical axis track A52 extends forward from the sub-frame A31 to the rear side of the frame A41. The bottom car body A53 is mounted on the bottom optical axis track A52, which can move back and forth, so that the bottom car body A53 can move forward from the sub-frame A31 to the sludge spreading position, and the upper car body A54 is located above the sludge recovery trough A61. The upper side of the bottom car body A53 is provided with an upper optical axis track A55. The upper car body A54 can be installed on the upper optical axis track A55, which can move back and forth. After the bottom car body A53 moves to the sludge laying position, the upper car body A54 can move back and forth relative to the bottom car body A53 to lay sludge, and move back and forth between the sludge recovery trough A61 and the material cylinder A43.

[0041] During the sludge-laying process, the bottom vehicle A53 is stationary at the sludge-laying position. The sludge flowing into the diversion hard pipe A2 from the feed end of the diversion hard pipe A2 is evenly distributed through the diversion hard pipe A2 and simultaneously fed into different feed hoses from different discharge ends of the diversion hard pipe A2. The feed hoses then feed the sludge into different sludge-laying pipes in the upper vehicle A54. The discharge port of the upper vehicle A54 is located on the lower side of the upper vehicle A54. The upper vehicle A54 first moves forward, pushing the filter cloth 100 so that the filter cloth 100 forms a U-shaped wrap around the upper vehicle A54. Then, the upper vehicle A54 moves backward, and as it moves, sludge is squeezed out from the sludge-laying pipes of the upper vehicle A54 onto the filter cloth 100 wrapping the upper vehicle A54. The material cylinder A43 contains a lifting platform for supporting the filter cloth and sludge. After a layer of sludge is laid on the upper vehicle A54, the lifting platform lowers, allowing the upper vehicle A54 to lay the next layer of sludge. When recycling the filter cloth 100, both the bottom vehicle A53 and the upper vehicle A54 retract into the sub-frame A31. Without the obstruction of the bottom vehicle A53 and the upper vehicle A54, the dried sludge falls off the filter cloth 100 and can fall directly into the sludge recycling trough A61. Under the conveying of the sludge recycling conveying mechanism A62, it is discharged to the recycling equipment outside the first skid assembly A.

[0042] See Figure 4The second skid-mounted assembly B contains devices installed within a cuboid-shaped second frame B1, which is a frame composed of horizontal and vertical pipes. A chemical mixing tank B5 and a clean water tank B3 are located side-by-side in front of the sludge pumping device B2. The sludge pumping device B2 includes a first device B21 in a left-right direction and a second device B22 in a front-back direction. The second device B22 is located to the right front of the first device B21. A sludge mixing device B6 and a ladder B7 are located to the left of the second device B22, with the sludge mixing device B6 in front of the ladder B7. A sludge transfer pump B8, a self-priming pump B9, a chemical transfer pump B51, and a cleaning pump B4 are located in front of the sludge mixing device B6 and the second device B22. The chemical mixing tank B5 and the clean water tank B3 are located in front of the sludge transfer pump B8, the self-priming pump B9, the chemical transfer pump B51, and the cleaning pump B4.

[0043] Cleaning pump B4 and self-priming pump B9 are connected to clean water tank B3 respectively. Cleaning pump B4 is detachably connected to cleaning device A33 to supply water to cleaning device A33. Self-priming pump B9 is connected to sludge mixing device B6 to add water to sludge mixing device B6. Chemical transfer pump B51 is connected to chemical mixing tank B5 and sludge mixing device B6 to add chemicals from chemical mixing tank B5 to sludge mixing device B6. Sludge transfer pump B8 is connected to sludge mixing device B6 and sludge pumping device B2 to transfer the mixed sludge from sludge mixing device B6 to sludge pumping device B2. Figures 1 to 8 The diagram does not show all the pipes used to transport sludge, water, or chemicals between the devices.

[0044] The sludge to be treated is added to the sludge mixing device B6 through the feed port B61. Water is added to the sludge mixing device B6 from the clear water tank B3 via the self-priming pump B9. The chemical mixing tank B5 (used to mix dry chemicals with water) adds chemicals to the sludge mixing device B6 via the chemical transfer pump B51. The mixed sludge in the sludge mixing device B6 is then transferred to the sludge pumping device B2 from the buffer bin B221 of the second device B22 via the sludge transfer pump B8. Personnel on the ladder B7 can observe the sludge in the sludge mixing device B6 through the feed port B61 and the sludge in the sludge pumping device B2 through the buffer bin B221.

[0045] Both the first frame A1 and the second frame B1 are equipped with lifting lugs for hoisting, so that the first skid assembly A can be hoisted and placed on the transport vehicle 200 by means of hoisting. Figure 5 and 6 The second skid assembly B was hoisted and placed on the transport vehicle 300. Figure 7 and 8The pipes (e.g., connecting hoses D) connecting the devices contained in the first skid assembly A to the devices contained in the second skid assembly B can be detached and placed on transport vehicle 200 or transport vehicle 300, and the maintenance rack C can be disassembled and placed on transport vehicle 200 or transport vehicle 300.

[0046] Those skilled in the art can modify the structure of the devices included in the first skid-mounted assembly A and the devices included in the second skid-mounted assembly B as needed, for example, modifying the structure of the secondary spreading trolley A5 and the structure of the roller frame device A3. Those skilled in the art can also add or remove devices as needed, for example, removing the cleaning device A33, removing the chemical mixing tank B5 (and instead adding chemicals directly to the sludge mixing device B6 from outside the second skid-mounted assembly B), and removing the sludge mixing device B6 (and instead directly inputting the prepared sludge into the sludge pumping device B2 from outside the second skid-mounted assembly B).

[0047] To clearly describe the relative positional relationships between different components and different parts of the same component of the skid-mounted sludge dryer, this application places the skid-mounted sludge dryer in a coordinate system. This coordinate system includes six directions: up, down, front, back, left, and right. The relationship between this coordinate system and the skid-mounted sludge dryer is detailed in [reference needed]. Figure 1 .

Claims

1. A skid-mounted sludge dryer, characterized in that: The system includes a first skid-mounted assembly, a second skid-mounted assembly, and connecting hoses. The first skid-mounted assembly includes a first frame with a cuboid structure. Within the first frame, from back to front, are a roller frame device for conveying filter cloth and a stacked filter press for dewatering sludge. The roller frame device includes a sub-frame and roller groups mounted on the sub-frame, and the sub-frame is fixedly connected to the first frame. The stacked filter press includes a frame, a hydraulic device, a material cylinder, and a cloth pressing mechanism, and the frame is fixedly connected to the first frame. The first frame also includes a secondary material spreading trolley, a feeding hose, a diversion hard pipe, and a sludge recovery device. The sludge recovery device includes a sludge recovery trough and a sludge recovery conveying mechanism for collecting dried sludge. The secondary material spreading trolley includes an upper trolley body and a lower trolley body that can move relative to each other, and the diversion hard pipe is connected to the upper trolley body through the feeding hose. The second skid assembly includes a second frame with a cuboid structure. A sludge pumping device is installed inside the second frame. The sludge pumping device is fixedly connected to the second frame. The connecting hose is detachably connected to the diversion hard pipe and the sludge pumping device, so that the sludge pumping device can output the sludge to be dried to the filter cloth in sequence through the connecting hose, the diversion hard pipe, the feeding hose and the upper vehicle body. The secondary material spreading trolley also includes a bottom support, which is fixed on the sub-frame and the machine frame. The bottom support has a bottom optical axis track on its upper side, which extends forward from inside the sub-frame to the rear of the machine frame. The bottom trolley body can be installed on the bottom optical axis track in a back-and-forth motion, allowing the bottom trolley body to move forward from inside the sub-frame to the mud spreading position. The bottom trolley body has an upper optical axis track on its upper side, and the upper trolley body can be installed on the upper optical axis track in a back-and-forth motion, allowing the upper trolley body to move back and forth relative to the bottom trolley body to spread mud after the bottom trolley body has moved to the mud spreading position. The roller assembly includes a floating roller located on the front side of the sub-frame and mounted on a floating seat. The sub-frame is equipped with a drive device for adjusting the vertical position of the floating seat. The roller frame assembly also includes a sludge scraping mechanism, which includes a scraper and a tension spring. The scraper is rotatably connected to the floating seat, thereby moving up and down together with the floating roller. The tension spring is connected to the sub-frame and the scraper respectively, so that when the floating seat moves up, it pulls the scraper to rotate, causing the scraper to press against the filter cloth passing between the scraper and the floating roller, thus scraping off the sludge on the filter cloth. The sub-frame is equipped with a winding mechanism for winding the filter cloth and an edge suction device for aligning the filter cloth with the winding mechanism during the winding process. The sub-frame also has a cleaning device for cleaning the filter cloth. A washing space is located within the sub-frame, with a front baffle, an upper baffle, a water collection tray, a left baffle, and a right baffle respectively located on the front, upper, lower, left, and right sides of the washing space. A roller assembly transports the filter cloth from the rear upper to the front lower within the washing space, dividing the washing space into a front upper space and a rear lower space. The cleaning device includes an upper water spray device and an upper support plate located in the front upper space, and a lower water spray device and a lower support plate located in the rear lower space. The upper support plate is opposite to the lower water spray device, and the lower support plate is opposite to the upper water spray device. The upper and lower support plates support the filter cloth when it is sprayed with water by the upper and lower water spray devices. The upper and lower support plates have drainage holes. The water collection tray has a drain outlet for draining water.

2. The skid-mounted sludge dryer as described in claim 1, characterized in that: A hydraulic oil tank mounting bracket is provided on the upper side of the first frame, and the hydraulic oil tank of the hydraulic device is located on the hydraulic oil tank mounting bracket; the skid-mounted sludge dryer also includes a maintenance frame, which includes a ladder, a step, and a guardrail. The step is arranged around the upper side of the first frame, and the inner side of the step is detachably fixed to the outer side of the first frame. The guardrail is located on the outer side of the step and has a notch corresponding to the ladder. The ladder is used to connect the step to the ground.

3. The skid-mounted sludge dryer as described in claim 1, characterized in that: The first and second frames are equipped with lifting lugs for lifting the first skid assembly and the second skid assembly.

4. The skid-mounted sludge dryer as described in claim 1, characterized in that: The lower part of the sub-frame and the diversion hard pipe are fixed to a base plate, which is fixed to the lower side of the first frame. The diversion hard pipe is located inside the sub-frame. The feed end of the diversion hard pipe is connected to the connecting hose, and the discharge end of the diversion hard pipe is connected to the feeding hose.

5. The skid-mounted sludge dryer as described in claim 4, characterized in that: The lower part of the frame is fixedly connected to the lower side of the first frame, and the upper part of the frame and the upper part of the sub-frame are respectively fixedly connected to the inner side of the first frame.

6. The skid-mounted sludge dryer as described in claim 1, characterized in that: The upper and lower water spray devices are respectively fixed to the sub-frame by a locking component. After the locking component is released, the upper and lower water spray devices can be rotated to change the angle between the water spray direction of the upper and lower water spray devices and the filter cloth.

7. The skid-mounted sludge dryer as described in claim 6, characterized in that: The lower support plate is connected to the upper water spray device via a connecting assembly. The connecting assembly is fixed to the upper water spray device via a first fixing assembly. After the first fixing assembly is released, the connecting assembly can be rotated to change the angle between the water spray direction of the upper water spray device and the lower support plate. The lower support plate is fixed to the connecting assembly via a second fixing assembly. After the second fixing assembly is released, the lower support plate can be moved to change the distance between the upper water spray device and the lower support plate. The connection method between the upper support plate and the lower water spray device is the same as the connection method between the lower support plate and the upper water spray device.

8. The skid-mounted sludge dryer as described in claim 1, characterized in that: The second frame also includes a clean water tank, a cleaning pump, a self-priming pump, a sludge mixing device, a sludge conveying pump, a chemical mixing tank, and a chemical conveying pump. The cleaning pump and the self-priming pump are connected to the clean water tank respectively. The cleaning pump is detachably connected to the cleaning device to supply water to the cleaning device. The self-priming pump is connected to the sludge mixing device and is used to add water to the sludge mixing device; The chemical delivery pump connects the chemical mixing tank and the sludge mixing device, and is used to add the chemical from the chemical mixing tank into the sludge mixing device. The sludge transfer pump connects the sludge mixing device and the sludge pumping device, and is used to transport the sludge mixed in the sludge mixing device to the sludge pumping device.

9. The skid-mounted sludge dryer as described in claim 8, characterized in that: The feed end of the diversion rigid pipe is set towards the left side of the first frame, and the discharge port of the sludge pumping device is set towards the right side of the second frame; the chemical mixing tank and the clear water tank are arranged side by side in front of the sludge pumping device. The sludge pumping device includes a first device in the left-right direction and a second device in the front-back direction. The second device is located to the right front of the first device. The sludge mixing device and a ladder are located to the left of the second device. The sludge mixing device is located in front of the ladder. The sludge conveying pump, the self-priming pump, the chemical conveying pump, and the cleaning pump are located in front of the sludge mixing device and the second device. The chemical mixing tank and the clear water tank are located in front of the sludge conveying pump, the self-priming pump, the chemical conveying pump, and the cleaning pump.

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