A kind of sludge processing forming equipment and method

Abstract

The present invention relates to the technical field of sludge treatment, and specifically provides a sludge treatment forming device and method, comprising a frame, an extrusion cylinder is arranged on the frame, a feed port and a discharge port are opened on the extrusion cylinder, a spiral auger is rotatably arranged in the extrusion cylinder, and the interior of the rotating shaft of the spiral auger is hollow, and a plurality of fan-shaped laminations are arranged on the inner wall of the rotating shaft, the fan-shaped laminations can cut the sludge, thereby generating more water flow channels in the sludge, and when the interior of the rotating shaft is in a negative pressure state, the fan-shaped laminations can assist in absorbing water in the sludge, thereby improving the efficiency of sludge dehydration, and at the same time, the gas in the sludge can also be absorbed to increase the forming effect of the sludge, and a push-pull component and a buffer component are arranged, so that the extension distance of the fan-shaped laminations can be adaptively adjusted according to the water content of the sludge, thereby further improving the sludge dehydration efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge treatment, and in particular to a sludge treatment molding device and method. Background Art

[0002] Sludge treatment refers to the whole process of reducing, stabilizing, harmless and resource-based treatment of sludge generated during sewage treatment. Since sludge contains a large amount of organic matter, pathogens, heavy metals and water, its treatment is crucial for environmental protection and resource recycling.

[0003] For example, Chinese patent CN118125680B discloses a strip sludge extruder, which includes a base frame, an extrusion structure is provided at the upper end of the base frame, a feed frame is provided at the upper end of the extrusion structure, and a processing device is provided at the upper end of the feed frame. The sludge to be processed is passed into the extrusion structure to realize the dehydration of the sludge.

[0004] However, when the above scheme treats sludge, the water content inside the sludge is different, and the sludge is enclosed in gas, so that the output sludge is still in a very loose state and cannot be well formed, thereby reducing the sludge treatment effect. Summary of the invention

[0005] Based on this, it is necessary to provide a sludge processing molding device and method to address the current problems of different water contents inside the sludge and gas enclosed in the sludge resulting in poor sludge molding effect.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A sludge processing molding device, comprising:

[0008] A frame, wherein an extrusion barrel is arranged on the frame, and an inlet and an outlet are provided on the extrusion barrel;

[0009] A spiral auger, wherein the outer periphery of the blades of the spiral auger is in sliding contact with the inner wall of the extrusion cylinder, the blade spacing of the spiral auger gradually decreases along the conveying direction, the rotating shaft of the spiral auger is hollow and a plurality of auxiliary drainage components are arranged on the inner wall of the rotating shaft;

[0010] The auxiliary drainage assembly includes a plurality of fan-shaped laminates, which are stacked together to form a fan-shaped block. A plurality of through slots are provided on the side wall of the spiral auger shaft. The fan-shaped laminates correspond to the through slots one by one. The fan-shaped laminates can reciprocate along the radial direction of the spiral auger shaft to continuously extend out of the through slots.

[0011] A push-pull assembly, wherein the push-pull assembly can cause the interior of the spiral auger shaft to reciprocate between a first state and a second state;

[0012] When the interior of the spiral auger shaft is in the first state, the interior of the spiral auger shaft is in a negative pressure state, and the fan-shaped laminated sheets are retracted in the through groove;

[0013] When the interior of the spiral auger shaft is in the second state, the interior of the spiral auger shaft is in a positive pressure state, and the fan-shaped laminated sheets extend out of the through slots.

[0014] Furthermore, the push-pull assembly includes a connecting tube and a rotating disk, the connecting tube is rotatably connected to the spiral auger shaft, an axially sliding piston is arranged inside the connecting tube, the rotating disk is rotatably connected to the frame, a connecting rod is arranged at an eccentric position of the rotating disk, and the connecting rod is connected to the piston.

[0015] Furthermore, a first driving motor is disposed on the frame, and the first driving motor drives the rotating disk to rotate.

[0016] Furthermore, a buffer assembly is provided on the rotating disk, and the buffer assembly can change the stroke of the connecting rod pulling the piston to move axially back and forth, and the stroke of the axial reciprocating movement of the piston is positively correlated with the water content of the sludge in the extrusion cylinder.

[0017] Furthermore, the buffer assembly includes a damping rod and an elastic member, the damping rod is distributed radially along the rotating disk, one end of the damping rod is fixedly connected to the center of the rotating disk, the other end of the damping rod is hinged to the connecting rod, the damping rod can be telescopic, and the elastic member is sleeved on the damping rod.

[0018] Furthermore, a plurality of filter rollers are arranged on the inner periphery of the spiral auger shaft, and the plurality of filter rollers surround a sector-shaped block formed by a plurality of sector-shaped laminated sheets.

[0019] Furthermore, a water pump is provided on the frame, a pipeline of the water pump is connected to the interior of the spiral auger shaft, a one-way valve is provided inside the water pump pipeline, and the one-way valve enables water inside the spiral auger shaft to be sucked up by the water pump.

[0020] Furthermore, a conical discharge barrel is connected to the discharge port of the extrusion barrel, and a large end of the conical discharge barrel is connected to the extrusion barrel.

[0021] Furthermore, a second driving motor is arranged on the frame, a chain is wound around the rotating shaft of the second driving motor, and the chain is also wound around the rotating shaft of the spiral auger.

[0022] The present invention also provides a sludge processing molding method, comprising the following specific steps:

[0023] S100: The sludge is pre-treated before entering the extrusion cylinder;

[0024] S200: The pre-treated sludge is introduced into the extrusion barrel. The sludge is squeezed and drained under the rotation of the spiral auger in the extrusion barrel. At the same time, the sludge is reciprocatedly cut by a number of fan-shaped laminated sheets on the spiral auger shaft. The negative pressure inside the spiral auger shaft assists in absorbing water in the sludge. After dehydration, the sludge enters the conical discharge barrel for extrusion molding.

[0025] S300: Collect the dehydrated sludge.

[0026] The beneficial effects of the present invention are:

[0027] The present invention arranges the spiral auger shaft to be hollow, and a plurality of fan-shaped laminated sheets are arranged on the inner wall of the shaft. The fan-shaped laminated sheets can cut the sludge, thereby generating more water flow channels in the sludge, and can assist in absorbing water in the sludge when the interior of the shaft is in a negative pressure state, thereby improving the efficiency of sludge dehydration, and can also absorb gas in the sludge, thereby increasing the forming effect of the sludge.

[0028] The present invention arranges a push-pull assembly and a buffer assembly so that the extension distance of the fan-shaped stack can be adaptively adjusted according to the water content of the sludge, thereby further improving the dehydration efficiency of the sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the structure of a sludge processing molding device provided in one embodiment of the present invention;

[0030] Figure 2 A schematic cross-sectional view of an extrusion cylinder of a sludge treatment forming device provided in one embodiment of the present invention;

[0031] Figure 3 for Figure 2 An enlarged view of a portion X of a sludge treatment molding device provided in an embodiment;

[0032] Figure 4 A schematic diagram of a state in which a plurality of fan-shaped laminates of a sludge treatment forming device provided by an embodiment of the present invention are retracted into a through groove;

[0033] Figure 5 A schematic diagram of a state in which a plurality of fan-shaped laminates of a sludge treatment forming device provided in one embodiment of the present invention extend out of a through slot;

[0034] Figure 6 A schematic cross-sectional view of several fan-shaped butterfly pieces of a sludge treatment forming device provided in one embodiment of the present invention;

[0035] Figure 7 A schematic structural diagram of a rotating disk and a connecting cylinder of a sludge treatment forming device provided in one embodiment of the present invention;

[0036] Figure 8 A diagram showing the initial state of a rotating disk and a damping rod of a sludge treatment forming device provided by an embodiment of the present invention;

[0037] Fig. 9 Other state diagrams of the rotating disk and damping rod of the sludge treatment forming equipment provided by one embodiment of the present invention.

[0038] in:

[0039] 100, frame; 110, first drive motor; 120, second drive motor; 130, water pump; 140, pipeline; 150, rotating bearing; 160, chain;

[0040] 200, extrusion barrel; 210, feed port; 220, discharge port; 230, conical discharge barrel; 231, opening; 240, spiral auger; 241, rotating shaft; 250, through slot; 260, fan-shaped lamination; 261, slideway; 270, baffle; 271, limiting shaft; 280, filter roller;

[0041] 300, connecting cylinder; 310, piston; 320, rotating disk; 330, connecting rod; 331, hinged rod; 340, damping rod; 350, elastic member. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0044] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] Refer to the following Figure 1-Figure 9 To describe a sludge treatment molding device provided by the present invention.

[0046] A sludge treatment molding device, suitable for sludge treatment, includes a frame 100, an extrusion barrel 200 is arranged on the frame 100, and an inlet 210 and an outlet 220 are opened on the extrusion barrel 200. The sludge enters the extrusion barrel 200 through the inlet 210, and the sludge is discharged from the outlet 220 after being processed by the extrusion barrel 200. A spiral auger 240 is rotatably arranged in the extrusion barrel 200, and the outer periphery of the blades of the spiral auger 240 is in sliding contact with the inner wall of the extrusion barrel 200, and the blade spacing of the spiral auger 240 gradually decreases along the conveying direction of the sludge, so that the sludge between the blades of the spiral auger 240 can be compressed to squeeze out the water therein. The rotating shaft 241 of the spiral auger 240 is hollow inside, and a plurality of auxiliary drainage components are arranged on the inner wall of the rotating shaft 241, and the auxiliary drainage components can improve the efficiency of discharging water from the sludge.

[0047] The auxiliary drainage assembly includes a plurality of fan-shaped laminates 260, as shown in FIG. Figure 2-Figure 6 As shown, a plurality of fan-shaped laminated sheets 260 are stacked together to form a fan-shaped block, and a plurality of through slots 250 are provided on the side wall of the rotating shaft 241 of the spiral auger 240. The plurality of through slots 250 correspond to the plurality of fan-shaped laminated sheets 260. Each fan-shaped laminated sheet 260 is located in each through slot 250. Each fan-shaped laminated sheet 260 can move radially along the rotating shaft 241 of the spiral auger 240 in the through slot 250 so as to reciprocate out of the through slot 250. Since the space between adjacent blades of the spiral auger 240 is filled with dirt when the spiral auger 240 is working, Mud, and when the fan-shaped stack 260 extends out of the through slot 250, it can cut the sludge in the space, making the sludge more dispersed, and as the sludge is squeezed, the water in the sludge will pass through the position cut by the fan-shaped stack 260 through the through slot 250 and flow into the rotating shaft 241 of the spiral auger 240, thereby playing a function of assisting the discharge of water. It can be understood that the fan-shaped stack 260 can continuously cut the sludge by reciprocatingly extending out of the through slot 250, so that the water in the sludge can have more flow channels, thereby improving the discharge efficiency of the water in the sludge.

[0048] To prevent the fan-shaped lamination 260 from being separated from the through slot 250, as shown in FIG. Figure 6 As shown, a plurality of fan-shaped stacks 260 are provided with slide grooves 261, which extend along the extension and retraction direction of the fan-shaped stacks 260, and two adjacent fan-shaped stacks 260 are fixedly provided with baffles 270, which are fixedly connected to the through slots 250, and a limiting shaft 271 is fixedly provided on the baffles 270, which passes through the slide grooves 261. When the fan-shaped stacks 260 are extended and retracted, the slide grooves 261 on the fan-shaped stacks 260 will not be separated from the limiting shaft 271, thereby preventing the fan-shaped stacks 260 from being separated from the through slots 250.

[0049] The rotating shaft 241 of the spiral auger 240 has a first state and a second state. When in the first state, the interior of the rotating shaft 241 of the spiral auger 240 is in a negative pressure state. When in the negative pressure state, it can adsorb a plurality of fan-shaped stacks 260 to shrink inside the through groove 250, and can have adsorption force on the sludge between the blades of the spiral auger 240, and can absorb water and gas in the sludge; and when in the second state, the interior of the rotating shaft 241 of the spiral auger 240 is in a positive pressure state. When in the positive pressure state, it can push a plurality of fan-shaped stacks 260 to extend out of the through groove 250 to cut the sludge between the blades of the spiral auger 240. Therefore, a push-pull component is provided on the frame 100, and the push-pull component is used to enable the interior of the rotating shaft 241 of the spiral auger 240 to continuously switch between the first state and the second state, so that the fan-shaped stacks 260 can reciprocate and extend to continuously cut the sludge, thereby ensuring that the sludge treatment efficiency is at a high level.

[0050] By arranging a plurality of fan-shaped laminated sheets 260 to reciprocate and expand and contract in the through groove 250, on the one hand, the drainage efficiency of the sludge can be improved, and on the other hand, the gas in the sludge can be discharged.

[0051] Specifically, the push-pull assembly in this embodiment includes a connecting cylinder 300 and a rotating disk 320. The connecting cylinder 300 is rotatably connected to the rotating shaft 241 of the spiral auger 240 and is rotatably sealed. The connecting cylinder 300 is connected to the interior of the rotating shaft 241 of the spiral auger 240. An axially sliding piston 310 is provided in the connecting cylinder 300. The connecting cylinder 300 is fixedly provided on the frame 100, and the rotating shaft 241 of the spiral auger 240 can rotate relative to the connecting cylinder 300. When the piston 310 axially reciprocates in the connecting cylinder 300, the first state and the second state can be continuously switched. For example, when the piston 310 slides outward, a negative pressure state can be formed inside the rotating shaft 241 of the spiral auger 240, and when the piston 310 slides inward, a positive pressure state can be formed inside the spiral auger 240, thereby realizing the reciprocating telescopic function of the fan-shaped stack 260. The rotating disk 320 is rotatably arranged on the frame 100, and a connecting rod 330 is arranged at an eccentric position of the rotating disk 320. The other end of the connecting rod 330 is connected to the piston 310. When the rotating disk 320 rotates, the connecting rod 330 is driven, and the connecting rod 330 pulls the piston 310 to move axially back and forth.

[0052] In order to facilitate the rotation of the rotating disk 320, a first driving motor 110 is fixedly installed on the frame 100. The rotating shaft of the first driving motor 110 is coaxial with and fixedly connected to the rotating disk 320. When the first driving motor 110 rotates, it can drive the rotating disk 320 to rotate.

[0053] In a further embodiment, in order to enable the expansion and contraction amount of the fan-shaped stack 260 to be adaptively adjusted according to the water content of the sludge, a buffer assembly is provided on the rotating disk 320. The buffer assembly can adjust the stroke size of the axial reciprocating expansion and contraction of the piston 310 according to the water content of the sludge, and the stroke size of the axial reciprocating expansion and contraction of the piston 310 determines the expansion and contraction amount of the fan-shaped stack 260. The larger the stroke, the larger the expansion and contraction amount of the fan-shaped stack 260, and the axial reciprocating expansion and contraction stroke size of the piston 310 is positively correlated with the water content of the sludge, that is, the larger the water content of the sludge, the larger the expansion and contraction amount of the fan-shaped stack 260, and the smaller the water content of the sludge, the smaller the expansion and contraction amount of the fan-shaped stack 260.

[0054] It can be understood that the greater the water content of the sludge, the longer the axial reciprocating stroke of the piston 310 needs to be in order to absorb more water, and the smaller the water content of the sludge, the smaller the axial reciprocating stroke of the piston 310 is in order to absorb less water in the sludge.

[0055] Specifically, the buffer assembly includes a damping rod 340 and an elastic member 350. The damping rod 340 is distributed on the rotating disk 320 along the radial direction of the rotating disk 320. One end of the damping rod 340 is fixedly connected to the center of the rotating disk 320, and the other end of the damping rod 340 is hinged to one end of the connecting rod 330. The damping rod 340 has a damping inside so that the damping rod 340 can slowly expand and contract, and the elastic member 350 is located on the outer periphery of the damping rod 340. The elastic member 350 is a spring. The elastic member 350 is located on the damping rod 340 to provide elastic force. Figure 8 Assuming that the rotating disk 320 rotates clockwise, the rotating disk 320 drives the damping rod 340 to rotate, the damping rod 340 pulls the connecting rod 330, and the connecting rod 330 pulls the piston 310. If the sludge in the extrusion cylinder 200 has a high water content, when the rotating disk 320 pulls the piston 310 through the connecting rod 330, the piston 310 is easier to pull, and the damping rod 340 is shorter when it is on the right side of the rotating disk 320, and is shorter when it is rotated to the left side, so that the piston 310 moves outward. The moving distance is longer, and more water enters the rotating shaft 241 of the spiral auger 240. When the piston 310 is pulled outward by the connecting rod 330, the internal pressure of the rotating shaft 241 of the spiral auger 240 gradually returns to normal from negative pressure at the beginning. This is because when a negative pressure state is formed inside the rotating shaft 241 at the beginning, it can absorb water in the sludge. After water enters the rotating shaft 241, the pressure gradually recovers, and when the negative pressure is on, the fan-shaped stack 260 is retracted in the through groove 250 and can absorb water in the sludge. When the rotating disk 320 pushes the connecting rod 330, the connecting rod 330 pushes the piston 310 to reset, and the internal space of the rotating shaft 241 of the spiral auger 240 gradually returns to normal from the initial positive pressure, so that the fan-shaped stack 260 extends out of the through groove 250 to cut the sludge. Since the piston 310 moves outward for a long distance, the piston 310 also moves inward for a long distance when it resets, thereby generating a larger positive pressure to push the fan-shaped stack 260 to extend outward for a longer distance.

[0056] When the water content in the sludge is low, less water can enter the rotating shaft 241 of the spiral auger 240, so less water can be absorbed, which makes it difficult for the piston 310 to move outward in the axial direction. Figure 8 As shown, when the damping rod 340 rotates to the right, it is more difficult to pull the piston 310, so the extended length of the damping rod 340 is longer. As the damping rod 340 rotates to the left, the shortened distance of the damping rod 340 is also longer, so that the axial outward movement distance of the piston 310 is shorter, but the fan-shaped stack 260 can still be retracted into the through groove 250. When the piston 310 moves axially inward, the outward movement distance is shorter, so the inward reset distance of the piston 310 is also shorter, so that the air pressure inside the rotating shaft 241 of the spiral auger 240 increases less, so that the fan-shaped stack 260 extends a shorter distance.

[0057] It should be noted that the connecting rod 330 in this embodiment is hinged by two hinged rods 331, one of which is fixedly connected to the piston 310, and the other hinged rod 331 is hinged to the damping rod 340. Of course, in other embodiments, the connecting rod 330 can also be a whole rod, but one end of the connecting rod 330 is required to be hinged to the piston 310, and the other end of the connecting rod 330 is hinged to the damping rod 340.

[0058] In a further embodiment, a plurality of filter rollers 280 are disposed on the inner periphery of the rotating shaft 241 of the spiral auger 240, and the plurality of filter rollers 280 are wrapped on a fan-shaped block formed by a plurality of fan-shaped laminated sheets 260, as shown in FIG. Figure 4-Figure 6 As shown, a plurality of filter rollers 280 are surrounded on the radius surface of the fan-shaped block formed by a plurality of fan-shaped stacking sheets 260. When the piston 310 moves axially outward so that the interior of the rotating shaft 241 of the spiral auger 240 is in a negative pressure state, water in the sludge will be sucked into the rotating shaft 241 of the spiral auger 240. At this time, the filter rollers 280 can prevent the sludge from entering the rotating shaft 241 of the spiral auger 240, and can completely separate the sludge and water, thereby improving the sludge dehydration effect.

[0059] Specifically, a water pump 130 is also provided on the frame 100 in this embodiment. The pipe 140 of the water pump 130 is connected to the piston 310 so as to be connected to the interior of the rotating shaft 241 of the spiral auger 240. A one-way valve (not shown in the figure) is provided in the pipe 140 of the water pump 130. The one-way valve allows water in the pipe 140 to flow only from the rotating shaft 241 of the spiral auger 240 to the water pump 130, but not in the opposite direction.

[0060] It should be noted that the setting of the pipeline 140 of the water pump 130 has little effect on the positive pressure or negative pressure state inside the rotating shaft 241 of the spiral auger 240. Since a fan-shaped block formed by a plurality of fan-shaped stacks 260 is provided on the inner wall of the rotating shaft 241 of the spiral auger 240, the pipeline 140 of a single water pump 130 has little effect.

[0061] In a further embodiment, a conical discharge barrel 230 is connected to the discharge port 220 of the extrusion barrel 200 , the large end of the conical discharge barrel 230 is connected to the extrusion barrel 200 , and an opening 231 is provided at the small end to facilitate the extrusion of the extruded sludge.

[0062] Specifically, the frame 100 in this embodiment is also provided with a second drive motor 120, and a chain 160 is wound around the rotating shaft of the second drive motor 120. The chain 160 is also wound around the rotating shaft 241 of the spiral auger 240. When the second drive motor 120 rotates, it can drive the spiral auger 240 to rotate through the chain 160. The spiral auger 240 rotates to squeeze and dehydrate the sludge in the extrusion cylinder 200, and finally squeeze it out from the opening 231 of the conical discharge cylinder 230.

[0063] To facilitate the rotation of the spiral auger 240, the rotating shaft 241 of the spiral auger 240 partially extends out of the extrusion cylinder 200, and a rotating bearing 150 is fixedly provided on the outer periphery of the extended portion, the inner periphery of the rotating bearing 150 is fixed to the outer periphery of the rotating shaft 241 of the spiral auger 240, and the outer periphery of the rotating bearing 150 is fixedly connected to the frame 100.

[0064] The specific working process of a sludge treatment molding device provided by the present invention is described in combination with the above embodiments:

[0065] start up:

[0066] The first drive motor 110 , the second drive motor 120 and the water pump 130 are started. The first drive motor 110 drives the auger 240 to rotate. The second drive motor 120 drives the rotating disk 320 to rotate. The water pump 130 can extract water from the rotating shaft 241 of the auger 240 .

[0067] Add ingredients:

[0068] The sludge that needs to be dehydrated is passed into the feed port 210 of the extrusion cylinder 200. The sludge enters the extrusion cylinder 200 through the feed port 210 and falls into the space between the blades of the spiral auger 240. The rotation of the spiral auger 240 can transport the sludge toward the discharge port 220. Since the spacing between the blades of the spiral auger 240 gradually decreases in the conveying direction, the sludge can be squeezed.

[0069] Assisted dehydration:

[0070] The second driving motor 120 drives the rotating disk 320 to rotate, and the rotating disk 320 drives the piston 310 to reciprocate axially through the connecting rod 330. If the water content in the sludge is low, it is difficult for the damping rod 340 on the rotating disk 320 to pull the piston 310 to move outward in the connecting cylinder 300, so that the distance that the piston 310 moves outward is short. When the piston 310 moves outward, a negative pressure state is formed inside the rotating shaft 241 of the spiral auger 240, so that the rotating shaft 241 of the spiral auger 240 can The water in the sludge can be sucked in through the through groove 250, and the fan-shaped stack 260 can be retracted in the through groove 250, and some gas in the sludge can also be sucked out. When the rotating disk 320 drives the piston 310 to reset, since the distance the piston 310 moves outward is small, the distance the piston 310 moves inward when it resets is also small, so that the piston 310 increases the air pressure inside the rotating shaft 241 of the spiral auger 240 is small, and the fan-shaped stack 260 extends out of the through groove 250 for a shorter distance.

[0071] If the water content in the sludge is high, the damping rod 340 on the rotating disk 320 can easily pull the piston 310 to move outward in the connecting tube 300. The degree of expansion and contraction of the damping rod 340 on the rotating disk 320 is small. The rotating disk 320 drives the piston 310 to move outward for a larger distance to absorb more water in the sludge. When the rotating disk 320 drives the piston 310 to move inward to reset, since the piston 310 moves outward for a longer distance, the piston 310 moves inward for a longer distance when it moves inward to reset, so that the piston 310 increases the air pressure inside the rotating shaft 241 of the spiral auger 240 to a greater extent, thereby pushing the fan-shaped stack 260 to extend outward for a longer distance, thereby better cutting the sludge and generating more water flow channels inside the sludge to prepare for the next water absorption.

[0072] Among them, the water pump 130 is always in working state. The water pump 130 pumps out the water inside the rotating shaft 241 of the spiral auger 240. As the spiral auger 240 rotates, the sludge is gradually dehydrated and gradually moves toward the discharge port 220. After passing through the discharge port 220, the sludge enters the conical discharge barrel 230, and finally is extruded through the opening 231 of the conical discharge barrel 230. The extruded sludge is collected, and the collected sludge is subsequently treated to complete the sludge dehydration treatment.

[0073] The present invention also provides a sludge processing molding method, which is applicable to a sludge processing molding device provided by the present invention, and at least comprises the following steps:

[0074] S100: The sludge is pre-treated before entering the extrusion cylinder 200;

[0075] Among them, the sludge needs to be pre-treated before the dehydration and molding step. The pre-treatment can make the sludge easier to handle in the dehydration and molding step. The sludge pre-treatment includes: sludge homogenous mixing, gravity concentration and adjustment of sludge properties. Sludge homogenous mixing is to mix sludge of different sources and properties evenly for subsequent treatment; gravity concentration is to use concentration equipment to naturally precipitate the water in the sludge and reduce the sludge volume; adjusting the sludge properties is to add flocculants or adjust the pH value to make the solid particles in the sludge form flocs for easy dehydration.

[0076] S200: The pre-treated sludge is introduced into the extrusion barrel 200. The sludge is squeezed and drained under the rotation of the spiral auger 240 in the extrusion barrel 200. At the same time, the sludge is reciprocatedly cut by a plurality of fan-shaped laminated sheets 260 on the rotating shaft 241 of the spiral auger 240. The internal negative pressure of the rotating shaft 241 of the spiral auger 240 assists in absorbing water in the sludge. After the sludge is dehydrated, it enters the conical discharge barrel 230 for extrusion molding.

[0077] Among them, the sludge dewatering and molding adopts a sludge treatment molding equipment provided by the present invention. After the pre-treated sludge is passed into the feed port 210 of the extrusion cylinder 200, the sludge is gradually squeezed and drained under the action of the rotation of the spiral auger 240. At the same time, a plurality of fan-shaped stacks 260 arranged on the rotating shaft 241 of the spiral auger 240 can reciprocate and retract in the through groove 250 to cut the sludge, and the negative pressure state inside the rotating shaft 241 of the spiral auger 240 can assist in absorbing water in the sludge, thereby improving the dewatering efficiency of the sludge. After dehydration, the sludge will pass through the discharge port 220 into the conical discharge cylinder 230, and finally be extruded and molded through the opening 231 on the conical discharge cylinder 230.

[0078] S300: Collect the dehydrated sludge.

[0079] After the sludge is extruded and formed, the sludge is collected for subsequent steps, thereby completing the treatment of the sludge.

[0080] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A sludge processing molding equipment, characterized in that: include: A frame, wherein an extrusion barrel is arranged on the frame, and an inlet and an outlet are provided on the extrusion barrel; A spiral auger, wherein the outer periphery of the blades of the spiral auger is in sliding contact with the inner wall of the extrusion cylinder, the blade spacing of the spiral auger gradually decreases along the conveying direction, the rotating shaft of the spiral auger is hollow and a plurality of auxiliary drainage components are arranged on the inner wall of the rotating shaft; The auxiliary drainage component includes a plurality of fan-shaped laminates, which are stacked together to form a fan-shaped block. A plurality of through grooves are provided on the side wall of the spiral auger shaft, and the fan-shaped laminates correspond to the through grooves one by one. The fan-shaped laminates can reciprocate along the radial direction of the spiral auger shaft to continuously extend out of the through groove to cut the sludge between the spiral auger blades; a plurality of filter rollers are arranged on the inner circumference of the spiral auger shaft, and the plurality of filter rollers are surrounded on the radius surface of the fan-shaped block formed by the plurality of fan-shaped laminates. A plurality of fan-shaped laminates are provided with slide grooves extending along the extension and contraction direction of the fan-shaped laminates, and baffles are fixedly provided on two adjacent fan-shaped laminates, which are fixedly connected to the through grooves, and a limiting shaft is fixedly provided on the baffle, which passes through the slide groove, and the slide grooves on the fan-shaped laminates will not separate from the limiting shaft when the fan-shaped laminates are extended and contracted; A push-pull assembly, wherein the push-pull assembly can enable the inside of the spiral auger shaft to switch back and forth between a first state and a second state; the push-pull assembly comprises a connecting cylinder and a rotating disk, the connecting cylinder is rotatably connected to the spiral auger shaft, an axially sliding piston is arranged inside the connecting cylinder, the rotating disk is rotatably connected to the frame, a connecting rod is arranged at an eccentric position of the rotating disk, and the connecting rod is connected to the piston; a buffer assembly is arranged on the rotating disk, the buffer assembly can change the stroke of the connecting rod pulling the piston to move axially back and forth, and the stroke size of the axial reciprocating movement of the piston is positively correlated with the water content of the sludge in the extrusion cylinder; the buffer assembly comprises a damping rod and an elastic member, the damping rod is distributed along the radial direction of the rotating disk, one end of the damping rod is fixedly connected to the center of the rotating disk, the other end of the damping rod is hinged to the connecting rod, the damping rod can be extended and retracted, and the elastic member is sleeved on the damping rod; When the interior of the spiral auger shaft is in the first state, the interior of the spiral auger shaft is in a negative pressure state, and the fan-shaped laminated sheets are retracted in the through groove; When the interior of the spiral auger shaft is in the second state, the interior of the spiral auger shaft is in a positive pressure state, and the fan-shaped laminated sheets extend out of the through slot.

2. The sludge processing molding equipment according to claim 1, characterized in that: The frame is provided with a first driving motor, and the first driving motor drives the rotating disk to rotate.

3. The sludge processing molding equipment according to claim 1, characterized in that: A water pump is arranged on the frame, a pipeline of the water pump is connected with the inside of the spiral auger shaft, a one-way valve is arranged inside the water pump pipeline, and the one-way valve enables the water inside the spiral auger shaft to be sucked by the water pump.

4. The sludge processing molding equipment according to claim 1, characterized in that: A conical discharge barrel is connected to the discharge port of the extrusion barrel, and the large end of the conical discharge barrel is connected to the extrusion barrel.

5. The sludge processing molding equipment according to claim 1, characterized in that: A second driving motor is arranged on the frame, a chain is wound around the rotating shaft of the second driving motor, and the chain is also wound around the rotating shaft of the spiral auger.

6. A sludge treatment molding method, using the sludge treatment molding equipment according to any one of claims 1 to 5, characterized in that: The specific steps include: S100: The sludge is pre-treated before entering the extrusion cylinder; S200: The pre-treated sludge is introduced into the extrusion barrel. The sludge is squeezed and drained under the rotation of the spiral auger in the extrusion barrel. At the same time, the sludge is reciprocatedly cut by a number of fan-shaped laminated sheets on the spiral auger shaft. The negative pressure inside the spiral auger shaft assists in absorbing water in the sludge. After dehydration, the sludge enters the conical discharge barrel for extrusion molding. S300: Collect the dehydrated sludge.

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