A low-cost dewatering and drying device for high-moisture organic solid waste

Abstract

This invention discloses a low-cost dewatering and drying device for high-moisture-content organic solid waste, belonging to the field of solid waste treatment technology. It includes a fixed frame, a water receiving tank, a motor, a filter cartridge, a screw conveyor, an adaptive sealing mechanism, a dredging mechanism, a drive mechanism, and a drying mechanism. The low-cost dewatering and drying device for high-moisture-content organic solid waste in this invention, through the inclusion of a motor, achieves coordinated operation of multiple functional units under a single power source drive, including screw conveying, adaptive back pressure adjustment, filter pore pulse dredging, drying stirring, and wall scraping. The various actions are linked through mechanical coupling, eliminating the need for an additional power source.

Description

Technical Field

[0001] This invention belongs to the field of solid waste treatment technology, and in particular relates to a low-cost dehydration and drying device for organic solid waste with high moisture content. Background Technology

[0002] High-moisture-content organic solid waste encompasses typical categories such as municipal sludge, kitchen waste, livestock and poultry manure, and fruit and vegetable processing residues. It is a key target for urban and rural organic waste treatment. This type of solid waste is characterized by high moisture content, strong viscosity, easy putrefaction and clumping, and high resistance to solid-liquid separation. Co-treatment with dewatering and drying is the core pretreatment step to achieve its reduction, stabilization, and resource utilization. Currently, the industry has developed mainstream technologies for treating high-moisture-content organic solid waste, including screw press dewatering, belt filter press dewatering, paddle-type low-temperature drying, and hot air circulation drying. These technologies are gradually iterating and upgrading towards integrated, continuous, and low-cost dewatering and drying processes.

[0003] However, existing organic solid waste dewatering and drying devices still have the following shortcomings in use: Firstly, the filter cartridge pores are easily clogged by sticky bridging formed by highly viscous solid waste. Existing unclogging structures require additional power or manual cleaning during shutdown, making it impossible to achieve continuous online unclogging and directly reducing the continuous operation capacity and dewatering efficiency of the device. Secondly, the back pressure of the pressing output is mostly manually fixed and cannot be adaptively adjusted according to the feed rate and spindle speed. This can easily lead to problems such as overloading and stalling or insufficient pressing pressure, resulting in incomplete dehydration. Third, the equipment mostly adopts a multi-power source separate drive mode, with independent drive motors configured in both the dehydration spiral mechanism and the drying and stirring mechanism, which significantly increases the equipment manufacturing cost and operating energy consumption. Summary of the Invention

[0004] The purpose of this invention is to provide a low-cost dewatering and drying device for organic solid waste with high moisture content, which solves the problems in the prior art. The filter cartridges and filter holes of dewatering devices are easily clogged by sticky bridging formed by highly viscous solid waste. Cleaning the blockage requires additional power or manual cleaning during shutdown, which reduces the continuous operation capacity and dewatering efficiency of the device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A low-cost dewatering and drying device for high-moisture-content organic solid waste includes a water receiving tank and a motor mounted on a fixed frame. A filter cartridge with an open side is installed inside the water receiving tank. The power output shaft of the motor is driven by a screw conveyor rod, which extends coaxially into the filter cartridge. The device further includes: an adaptive sealing mechanism for creating adjustable pressing back pressure and controlling solid waste discharge; a clearing mechanism, driven by the adaptive sealing mechanism, for revolving around the axis of the filter cartridge and performing pulse-type clearing of the filter cartridge's pores when the screw conveyor rod rotates; a drive mechanism, driven by the clearing mechanism, for driving the clearing mechanism to rotate simultaneously with its own rotation; and a drying mechanism located below the adaptive sealing mechanism for receiving the dewatered solid waste discharged from the gap between the adaptive sealing mechanism and the filter cartridge opening, and for heating and drying the solid waste.

[0006] Preferably, the adaptive sealing mechanism includes: a square rod, fixedly connected to the end of the spiral conveying rod away from the motor; a movable plate, slidably sleeved on the square rod, on which a sealing plate is rotatably mounted, the sealing plate being used to seal the opening of the filter cartridge; a fixed plate, fixedly sleeved on the square rod, and connected to the movable plate by a first spring; a frustum plate, slidably sleeved on the square rod, and connected to the movable plate by multiple connecting rods; and multiple centrifugal pendulums, equidistantly mounted on the arc surface of the frustum plate.

[0007] Preferably, the driving mechanism includes: a limiting ring, which is fixedly sleeved on the filter cartridge and has an annular groove on one side; and a toothed ring, which is fixedly sleeved on the filter cartridge.

[0008] Preferably, the unblocking mechanism includes: a cylinder with a rotating shaft installed at one end and a sleeve installed at the other end, the rotating shaft being slidably connected to the annular groove of a limiting ring; a plurality of grooves, all formed on the cylinder; a plurality of movable plates, each slidably connected to one of the grooves; a plurality of push rods, each mounted on one of the movable plates and extending out of one of the grooves; and a plurality of second springs, each disposed within one of the grooves, one end of the second spring being fixedly connected to a movable plate and the other end of the second spring being connected to the inner wall of the groove.

[0009] Preferably, the unblocking mechanism further includes: a first gear, which is fixedly sleeved on the rotating shaft and meshes with the gear ring; and a bent rod, one end of which is inserted into the sleeve and the other end of which is fixedly connected to the movable plate.

[0010] Preferably, the adaptive blocking mechanism further includes: a horizontal shaft, which is fixedly connected to the end of the square rod away from the spiral conveying rod, and rotatably connected to a bearing seat mounted on the fixed frame.

[0011] Preferably, the drying mechanism includes: a fixed cylinder located below the adaptive sealing mechanism, on which multiple heating plates are mounted on its outer surface; and a fixed box fixedly connected to the fixed cylinder by multiple reinforcing rods.

[0012] Preferably, the drying mechanism further includes: a vertical rod located inside the fixed cylinder and rotatably connected to the fixed box; a second gear located inside the fixed box and fixedly connected to the vertical rod; multiple scrapers equidistantly mounted on the vertical rod, all in contact with the inner bottom surface of the fixed cylinder; a rack with a connecting block fixedly connected thereto, the connecting block being fixedly connected to a connecting ring rotatably mounted on a frustum plate, the rack meshing with the second gear, penetrating the fixed box and slidably connected to the fixed box.

[0013] Preferably, the drying mechanism further includes: a rotating drum, rotatably mounted on the vertical rod and rotatably connected to the fixed box; a second bevel gear, located inside the fixed box and fixedly connected to the rotating drum; and a stirring rod, located inside the fixed drum and fixedly connected to the rotating drum.

[0014] Preferably, the drying mechanism further includes: a crossbar, rotatably connected to the fixed box; a first bevel gear, located inside the fixed box, fixedly connected to the crossbar, and meshing with the second bevel gear; and a transmission belt, sleeved on the cross shaft and the crossbar.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. The low-cost dewatering and drying device for high-moisture organic solid waste in this invention achieves coordinated operation of multiple functional units such as screw conveying, back pressure adaptive adjustment, filter hole pulse unblocking, drying stirring and wall scraping under a single power source drive by setting a motor. The various actions are linked through mechanical coupling, without the need for an additional power source.

[0016] 2. The adaptive sealing mechanism in this invention comprises a square rod, a sealing plate, a movable plate, a fixed plate, a first spring, a frustum plate, a centrifugal pendulum, and a connecting rod. When the feed rate decreases and the motor speed increases, the centrifugal force generated by the centrifugal pendulum on the frustum plate increases accordingly. This increased centrifugal force pulls the frustum plate to move, which in turn pushes the sealing plate closer to the filter cartridge via the connecting rod, reducing the discharge gap, increasing the back pressure, and improving the pressing force on the material, thereby increasing the dewatering rate. Conversely, when the feed rate is too large, causing the motor load to increase and the speed to decrease, the centrifugal force generated by the centrifugal pendulum on the frustum plate decreases accordingly. At this time, the elasticity of the first spring becomes dominant, and the first spring pushes the movable plate and the sealing plate to move backward, increasing the discharge gap, reducing the back pressure, and allowing the material to be discharged quickly, thereby automatically preventing material blockage and motor overload.

[0017] 3. The low-cost dewatering and drying device for high-moisture-content organic solid waste in this invention, through the setting of a drive mechanism and a dredging mechanism, when the square rod drives the movable plate to rotate, the bent rod transmits the revolution power of the movable plate to the cylinder, causing the cylinder to revolve around the filter cylinder; at the same time, the first gear meshes with the gear ring, thereby driving the cylinder to rotate on its own axis while revolving around the filter cylinder. During the compound rotation process, the push rod is compressed when it contacts the inner wall of the filter cylinder, and the second spring stores energy; when the push rod just rotates to the position aligned with the filter hole, the second spring releases energy instantaneously, pushing the push rod to quickly spring into the filter hole, thereby mechanically destroying the stubborn bridging structure formed by the sticky material and completely pushing it out of the filter hole. Compared with the traditional scraping cleaning, this pulse push cleaning effect is more thorough and fully reuses the main shaft power, requiring no additional energy.

[0018] 4. The drying mechanism in this invention consists of a vertical rod, a second gear, a scraper, a rack, and a connecting block. When the feed rate changes and causes axial displacement of the frustum plate, the connecting ring fixed on the frustum plate will drive the connecting block and the rack to move synchronously. The moving rack meshes with the second gear, converting linear motion into rotational motion, thereby driving the vertical rod and the scraper to rotate inside the fixed cylinder, scraping off the material adhering to the inner wall. Moreover, the rotation angle of the scraper is linearly positively correlated with the axial displacement of the frustum plate, requiring no additional drive source. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a perspective view of the low-cost dewatering and drying device for high-moisture-content organic solid waste in this invention; Figure 2 This is a schematic diagram of the assembly structure of the filter cartridge, horizontal shaft, unblocking mechanism and driving mechanism in this invention; Figure 3 In this invention Figure 2 Enlarged schematic diagram of part A; Figure 4 In this invention Figure 2 Enlarged schematic diagram of part B; Figure 5 This is a cross-sectional view of the cylinder in this invention; Figure 6 This is a schematic diagram of the assembly structure of the spiral conveyor rod, square rod, horizontal shaft and drying mechanism in this invention; Figure 7This is a schematic diagram of the assembly structure of the horizontal shaft, horizontal bar, first bevel gear, transmission belt, rack and connecting block in this invention; Figure 8 This is a cross-sectional view of the fixed cylinder in this invention; Reference numerals: 100, fixed frame; 101, water tank; 102, drain pipe; 103, filter cartridge; 104, filter hole; 105, feed hopper; 106, motor; 107, screw conveyor rod; 110, adaptive sealing mechanism; 111, square rod; 112, sealing plate; 113, movable plate; 114, fixed plate; 115, first spring; 116, frustum plate; 1161, connecting ring; 117, centrifugal pendulum; 118, connecting rod; 119, horizontal axis; 120, unblocking mechanism; 121, cylinder; 122, groove; 123, movable plate; 124, top rod. ; 125. Second spring; 126. Rotating shaft; 127. First gear; 128. Bent rod; 129. Sleeve; 130. Drive mechanism; 131. Limiting ring; 132. Gear ring; 140. Drying mechanism; 141. Fixed cylinder; 1411. Heating plate; 142. Vertical rod; 1421. Second gear; 143. Scraper; 144. Rotating cylinder; 1441. Second bevel gear; 145. Stirring rod; 146. Rack; 1461. Connecting block; 147. Horizontal bar; 1471. First bevel gear; 148. Transmission belt; 149. Fixed box; 1491. Reinforcing rod. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0024] This invention is described in detail with reference to the accompanying drawings. When detailing the embodiments of this invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not to scale. Furthermore, the accompanying drawings are merely examples and should not be construed as limiting the scope of protection of this invention. In actual fabrication, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0025] Furthermore, it should be noted in the description of this invention that the terms "first," "second," or "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" in this invention should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; similarly, they can refer to mechanical connections, electrical connections, or direct connections, or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] Example 1: As Figure 1 and Figure 2 As shown, a low-cost dewatering and drying device for high-moisture-content organic solid waste includes a fixed frame 100, a water receiving tank 101, a motor 106, a filter cartridge 103, a screw conveyor 107, an adaptive sealing mechanism 110, a dredging mechanism 120, a driving mechanism 130, and a drying mechanism 140.

[0028] The fixed frame 100 is the supporting carrier of the whole device. It is made of welded steel to ensure the structural rigidity of the device during operation. The water receiving tank 101 is fixedly installed on the upper part of the fixed frame 100. A drain pipe 102 is set at the bottom of the water receiving tank 101. The drain pipe 102 is used to discharge the filtrate produced by dehydration.

[0029] The filter cartridge 103 is a cylindrical structure with one open side, installed inside the water receiving tank 101. Multiple filter holes 104 are evenly distributed around the circumference of the filter cartridge 103. A feed hopper 105 is installed on one side of the filter cartridge 103 to facilitate the feeding of solid waste to be treated into the filter cartridge 103. The motor 106 is fixedly mounted on the fixing frame 100. The motor 106 is a variable frequency geared motor 106, which can adjust the output speed according to the material characteristics. The power output shaft of the motor 106 is fixedly connected to the screw conveyor 107 via a coupling. The screw conveyor 107 extends into the filter cartridge 103 and is coaxially rotatably connected to the filter cartridge 103. The pitch of the screw conveyor 107 gradually decreases from the feed end to the discharge end, forming a pre-pressing pressure gradient.

[0030] An adaptive blocking mechanism 110 is installed at the open end of the filter cylinder 103 to block the opening of the filter cylinder 103 and create a pressing back pressure. A drive mechanism 130 is fixedly installed on the outer wall of the filter cylinder 103 to provide transmission power for the rotation of the unblocking mechanism 120. The unblocking mechanism 120 is located outside the filter cylinder 103. When the screw conveyor 107 rotates, the unblocking mechanism 120 can revolve around the filter cylinder 103 in a circumferential direction synchronously with the adaptive blocking mechanism 110, and at the same time, it rotates under the action of the drive mechanism 130. When the unblocking mechanism 120 rotates, it will unblock the filter holes 104 of the filter cylinder 103. The drying mechanism 140 is located directly below the adaptive blocking mechanism 110. The drying mechanism 140 is used to receive the dewatered solid waste discharged from the gap between the opening of the filter cylinder 103 and the adaptive blocking mechanism 110, and dries the solid waste by heating and stirring.

[0031] Specifically, the solid waste to be processed is added into the filter cartridge 103. Then, the motor 106 is started to drive the screw conveyor 107 to rotate. The screw conveyor 107 will transport the solid waste in the filter cartridge 103 to the opening of the filter cartridge 103. When the solid waste comes into contact with the adaptive sealing mechanism 110, the solid waste will be squeezed, thereby squeezing out the water in the solid waste. The solid waste with squeezed water will fall into the drying mechanism 140. The drying mechanism 140 dries the solid waste by heating and stirring.

[0032] Furthermore, when the spiral conveyor rod 107 rotates, it will also drive the unblocking mechanism 120 to rotate. The rotating unblocking mechanism 120 will unblock the filter holes 104 of the filter cartridge 103 to prevent the filter holes 104 from being blocked.

[0033] like Figure 2 and Figure 4As shown, the adaptive sealing mechanism 110 includes a square rod 111, a sealing plate 112, a movable plate 113, a fixed plate 114, a first spring 115, a frustum plate 116, multiple centrifugal pendulums 117, and multiple connecting rods 118. The square rod 111 is coaxially and fixedly connected to the end of the screw conveyor 107 away from the motor 106. The square rod 111 is made of metal with a square cross-section to ensure torque transmission without slippage. The movable plate 113 has a square hole in its center and is slidably fitted onto the square rod 111. The movable plate 113 can slide freely along the axial direction of the square rod 111. The sealing plate 112 is rotatably mounted on the side of the movable plate 113 closest to the filter cartridge 103 via a bearing. The diameter of the sealing plate 112 matches the inner diameter of the opening of the filter cartridge 103. The fixed plate 114 is fixedly fitted onto the square rod 111. Located on the side of the movable plate 113 away from the filter cartridge 103, the fixed plate 114 is elastically connected to the movable plate 113 by a first spring 115. The first spring 115 is a compression spring that provides basic back pressure. The frustum plate 116 also has a square hole in its center and is slidably sleeved on the square rod 111. The frustum plate 116 is fixedly connected to the movable plate 113 by multiple circumferentially equidistant connecting rods 118 to achieve synchronous axial displacement. Multiple centrifugal pendulums 117 are circumferentially equidistantly installed on the outer arc surface of the frustum plate 116. The spherical head of the centrifugal pendulum 117 is made of metal.

[0034] Specifically, the rotating screw conveyor 107 continuously conveys solid waste toward the sealing plate 112, causing the pressure on the sealing plate 112 to increase continuously. When the pressure on the sealing plate 112 exceeds the threshold, it will push the sealing plate 112 and the movable plate 113 to move away from the filter cartridge 103, thereby creating a gap between the sealing plate 112 and the filter cartridge 103, and the solid waste in the filter cartridge 103 will fall out through the gap.

[0035] By setting up the frustum plate 116 and multiple centrifugal pendulums 117, when the feed rate of the filter cylinder 103 is too large, the load on the screw conveyor 107 increases, the speed of the motor 106 decreases, the centrifugal force generated by the centrifugal pendulums 117 decreases, and the elastic force of the first spring 115 dominates, reducing the discharge back pressure and preventing material from stalling. When the feed rate of the filter cylinder 103 is small, the speed of the motor 106 and the screw conveyor 107 increases, the centrifugal force of the centrifugal pendulums 117 increases, and the generated centrifugal force pulls the frustum plate 116 towards the filter cylinder 103, and pushes the movable plate 113 to move through the connecting rod 118, thereby reducing the gap between the sealing plate 112 and the opening of the filter cylinder 103, increasing the discharge back pressure, and improving the pressing and dewatering rate.

[0036] like Figure 2 and Figure 3As shown, the drive mechanism 130 includes a limiting ring 131 and a toothed ring 132. The limiting ring 131 is fixedly sleeved on the outer wall of the filter cartridge 103 near the opening end, and an annular groove is formed on the side of the limiting ring 131 away from the filter cartridge 103. Figure 2 , Figure 3 and Figure 5 As shown, the unblocking mechanism 120 includes a cylinder 121, a groove 122, a movable plate 123, a push rod 124, a second spring 125, a rotating shaft 126, and a sleeve 129.

[0037] A cylindrical cylinder 121 has multiple grooves 122 evenly spaced around its circumference, extending radially along the cylinder 121. Multiple movable plates 123 are slidably connected to the grooves 122 and can slide along them. Multiple push rods 124 are fixedly mounted on the movable plates 123, with one end of each push rod extending away from the movable plate 123 to the outside of the groove 122. Multiple second springs 125 are fixedly connected between the ends of the movable plates 123 away from the push rods 124 and the inner wall of the groove 122, providing elastic preload to the push rods 124. A rotating shaft 126 is fixedly mounted on the end of the cylinder 121 near the limiting ring 131, and is slidably connected to the annular groove of the limiting ring 131. A sleeve 129 is fixedly mounted on the end of the cylinder 121 away from the rotating shaft 126.

[0038] Specifically, the annular groove of the limiting ring 131 in the drive mechanism 130 can provide a orbital constraint for the unblocking mechanism 120, ensuring that the unblocking mechanism 120 makes coaxial circular motion around the filter cylinder 103, and preventing the top rod 124 from being misaligned with the filter hole 104.

[0039] When the filter cartridge 103 is used for a long time, the filter holes 104 of the filter cartridge 103 will inevitably become clogged. Moreover, the clogged filter holes 104 of high-viscosity organic solid waste is a viscous bridging clog, which cannot be effectively cleared by static scraping. Therefore, this mechanical jacking is designed to completely destroy the bridging structure and clear the filter holes 104. Specifically, when the cylinder 121 revolves, the end of the push rod 124 contacts the inner wall of the filter cartridge 103. Under the action of radial thrust, the push rod 124 drives the moving plate 123 to compress the second spring 125 to store energy. When the push rod 124 rotates with the cylinder 121 to the position aligned with the filter hole 104, the second spring 125 releases elastic potential energy, pushing the moving plate 123 and the push rod 124 to pop out quickly along the groove 122, so that the end of the push rod 124 is inserted into the filter hole 104, realizing mechanical pulse clearing, and eliminating the need for manual clearing, thus improving the continuous operation time of the device.

[0040] like Figure 2 and Figure 5As shown, the unblocking mechanism 120 also includes a first gear 127 and a bent rod 128. The first gear 127 is fixedly sleeved on the rotating shaft 126 and meshes with the gear ring 132; one end of the bent rod 128 is inserted into the sleeve 129, and the other end of the bent rod 128 is fixedly connected to the movable plate 113. The bending angle of the bent rod 128 is adapted to the axial displacement stroke of the sealing plate 112 and does not interfere with the adaptive adjustment of the adaptive sealing mechanism 110.

[0041] Specifically, the bent rod 128 transmits the revolution power of the movable plate 113 to the sleeve 129, which in turn drives the cylinder 121 to revolve around the filter cylinder 103. Since the first gear 127 and the gear ring 132 are meshed, when the first gear 127 revolves with the cylinder 121, the first gear 127 will drive the rotating shaft 126 and the cylinder 121 to rotate, forming a compound cleaning motion of revolution and rotation.

[0042] like Figure 1 and Figure 2 As shown, the adaptive blocking mechanism 110 also includes a horizontal shaft 119, which is coaxially and fixedly connected to the end of the square rod 111 away from the screw conveyor rod 107. The horizontal shaft 119 is rotatably mounted on the fixed frame 100 through a bearing seat.

[0043] Specifically, the spiral conveyor 107, the square rod 111, and the horizontal shaft 119 support the long shaft system. One end of the spiral conveyor 107 is supported by the filter cylinder 103, and one end of the horizontal shaft 119 is supported by the bearing seat of the fixed frame 100. This greatly reduces the deflection deformation of the long shaft rotation and avoids problems such as eccentricity of the sealing plate 112, material leakage, and sealing failure caused by shaft deformation.

[0044] Working principle: In actual use, the motor 106 is started, and the power output shaft of the motor 106 drives the spiral conveyor rod 107 to rotate. The spiral conveyor rod 107 synchronously drives the square rod 111 and the horizontal shaft 119 to rotate. The horizontal shaft 119 drives the horizontal bar 147 to rotate through the transmission belt 148. The horizontal bar 147 drives the rotating drum 144 and the stirring rod 145 to rotate through the first bevel gear 1471 and the second bevel gear 1441, in preparation for subsequent drying operations.

[0045] High-moisture organic solid waste is fed into the feed hopper 105 and falls into the filter cylinder 103. The screw conveyor 107 conveys the solid waste to the open end of the filter cylinder 103. The screw blades with gradually changing pitch pre-press the solid waste, squeezing out some free water. The water falls into the water receiving tank 101 through the filter hole 104 and is discharged through the drain pipe 102.

[0046] The pre-pressed solid waste is conveyed to the open end of the filter cylinder 103, where it contacts the sealing plate 112. The first spring 115 provides basic back pressure, and the solid waste is continuously squeezed and dehydrated. The square rod 111 drives the frustum plate 116 and the centrifugal pendulum 117 to rotate, and the back pressure is adaptively adjusted according to the rotation speed. That is, when the feed rate of the filter cylinder 103 is too large, the load on the screw conveyor 107 increases, the speed of the motor 106 decreases, the centrifugal force generated by the centrifugal pendulum 117 decreases, the elastic force of the first spring 115 dominates, and pushes the movable plate 113 backward, increasing the gap between the sealing plate 112 and the opening of the filter cylinder 103, reducing the discharge back pressure, and preventing the material from stalling and blocking. When the feed rate of filter cylinder 103 decreases and the rotation speed of motor 106 and screw conveyor 107 increases, the centrifugal force of centrifugal pendulum 117 increases. The centrifugal force generated pulls frustum plate 116 to move closer to filter cylinder 103, and pushes movable plate 113 to move through connecting rod 118. As a result, the gap between sealing plate 112 and the opening of filter cylinder 103 decreases, the discharge back pressure increases, and the pressing and dewatering rate is improved.

[0047] Example 2: As Figure 1 and Figures 6-8 As shown, while all other parts are the same as in the embodiment, the difference between this embodiment and the embodiment is that the drying mechanism 140 includes a fixed cylinder 141, a heating plate 1411, a fixed box 149, and a reinforcing rod 1491.

[0048] The fixed cylinder 141 is located directly below the adaptive sealing mechanism 110. The fixed cylinder 141 is a cylindrical drying chamber with an open top. Multiple heating plates 1411 are evenly attached to the outer surface of the fixed cylinder 141. The fixed box 149 is located inside the fixed cylinder 141 and is fixedly connected to the fixed cylinder 141 by multiple reinforcing rods 1491. The reinforcing rods 1491 enhance the overall structural rigidity of the drying mechanism 140.

[0049] Specifically, the fixed cylinder 141 is made of stainless steel with excellent thermal conductivity, and the heating plate 1411 is a low-temperature electric heating plate with a working temperature of 60-80℃ to avoid high-temperature coking of organic solid waste. The heating plate 1411 is attached to the outer wall, with high heat transfer efficiency. Heat is transferred to the solid waste through the cylinder wall to achieve low-temperature drying and retain the organic matter in the solid waste.

[0050] like Figures 6-8 As shown, the drying mechanism 140 also includes a vertical rod 142, a second gear 1421, a scraper 143, a rack 146, and a connecting block 1461. The vertical rod 142 is located at the center of the fixed cylinder 141, and its lower end is rotatably connected to the fixed box 149. The second gear 1421 is located inside the fixed box 149 and is coaxially fixedly connected to the lower end of the vertical rod 142. Multiple scrapers 143 are circumferentially and equidistantly installed on the upper part of the vertical rod 142, and the blades of the scrapers 143 are in close contact with the inner bottom surface of the fixed cylinder 141 to scrape off the material adhering to the wall. A guide hole is provided on the side wall of the fixed box 149. The rack 146 passes through the guide hole and slides in the guide hole. A connecting block 1461 is fixedly connected to the rack 146. The connecting block 1461 is fixedly connected to the connecting ring 1161 rotatably mounted on the frustum plate 116. The rack 146 meshes with the second gear 1421.

[0051] Specifically, the axial linear displacement of the frustum plate 116 is transmitted to the rack 146 through the connecting block 1461. The rack 146 meshes with the second gear 1421, converting the linear motion into rotational motion, which drives the vertical rod 142 and the scraper 143 to rotate. High-moisture organic solid waste tends to stick to the wall during drying, and this sticky layer increases thermal resistance. The rotating scraper 143 can promptly remove the sticky material, significantly reducing thermal resistance and improving heat transfer efficiency.

[0052] like Figures 6-8 As shown, the drying mechanism 140 also includes a rotating drum 144, a second bevel gear 1441, and a stirring rod 145. The rotating drum 144 is rotatably sleeved outside the vertical rod 142, and the upper end of the rotating drum 144 is rotatably connected to the fixed box 149; the second bevel gear 1441 is located inside the fixed box 149, and the second bevel gear 1441 is coaxially fixedly connected to the lower end of the rotating drum 144; the stirring rod 145 is installed on the rotating drum 144.

[0053] The drying mechanism 140 also includes a crossbar 147, a first bevel gear 1471, and a transmission belt 148. The crossbar 147 is horizontally arranged and rotatably connected to the side wall of the fixed box 149; the first bevel gear 1471 is located inside the fixed box 149 and is coaxially fixedly connected to one end of the crossbar 147, and the first bevel gear 1471 meshes with the second bevel gear 1441; the transmission belt 148 is sleeved on the pulleys of the horizontal shaft 119 and the crossbar 147 to realize the transmission of rotational power.

[0054] Specifically, when the horizontal shaft 119 rotates, it drives the horizontal bar 147 to rotate via the transmission belt 148, which in turn drives the rotating drum 144 to rotate via the first bevel gear 1471 and the second bevel gear 1441, which in turn drives the stirring rod 145 to rotate, so that the stirring rod 145 stirs the solid waste, breaks the dense structure of the solid waste, increases the contact area between the solid waste and the hot cylinder wall, and enhances heat and mass transfer.

[0055] Therefore, the rotation drive of the rotating drum 144 and the stirring rod 145 is entirely driven by the power output of the motor 106, without the need for an independent drive source, thus achieving efficient reuse of power.

[0056] Working principle: When the square rod 111 drives the movable plate 113 to revolve, the movable plate 113 drives the cylinder 121 to revolve along the filter cylinder 103 through the bent rod 128; since the first gear 127 meshes with the gear ring 132, the rotating first gear 127 will drive the cylinder 121 to rotate; the push rod 124 on the cylinder 121, under the action of the second spring 125, is inserted into the filter hole 104 in a pulse manner, breaking the viscous bridge, clearing the filter hole 104, and ensuring smooth water filtration.

[0057] When the solid waste pressure reaches the set value, the sealing plate 112 pushes the movable plate 113 to move backward, and the sealing plate 112 and the opening of the filter cylinder 103 form a discharge gap. After dewatering, the solid waste falls from the gap and directly into the lower fixed cylinder 141.

[0058] Then, multiple heating plates 1411 are activated to heat the fixed cylinder 141, thereby heating the solid waste. When the horizontal shaft 119 rotates, it drives the horizontal bar 147 to rotate via the transmission belt 148, which in turn drives the rotating cylinder 144 to rotate via the first bevel gear 1471 and the second bevel gear 1441, which in turn drives the stirring rod 145 to rotate, causing the stirring rod 145 to stir the solid waste, breaking up the dense structure of the solid waste, increasing the contact area between the solid waste and the wall of the heated cylinder, and enhancing heat and mass transfer. When the axial linear displacement of the frustum plate 116 occurs, it drives the rack 146 to move via the connecting block 1461. The moving rack 146 drives the second gear 1421 to rotate, which in turn drives the vertical rod 142 and the scraper 143 to rotate. The rotating scraper 143 can promptly scrape off the material adhering to the wall, improving heat transfer efficiency.

[0059] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0060] 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 specific implementations. 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 low-cost dewatering and drying device for high-moisture-content organic solid waste, comprising a water receiving tank and a motor mounted on a fixed frame, wherein a filter cartridge with one side open is installed inside the water receiving tank, and the power output shaft of the motor is drivenly connected to a screw conveyor rod, the screw conveyor rod extending coaxially into the interior of the filter cartridge, characterized in that, Also includes: An adaptive plugging mechanism is used to create adjustable pressing back pressure and control solid waste discharge; The unblocking mechanism is connected to the adaptive sealing mechanism and is used to revolve around the axis of the filter cylinder and perform pulse-type unblocking on the filter holes of the filter cylinder when the screw conveyor rotates. The drive mechanism, which is in transmission cooperation with the unblocking mechanism, is used to drive the unblocking mechanism to rotate on its own axis while revolving around the central axis; The drying mechanism, located below the adaptive sealing mechanism, is used to receive the dehydrated solid waste discharged from the gap between the adaptive sealing mechanism and the filter cartridge opening, and to heat and dry the solid waste.

2. The low-cost dewatering and drying device for high-moisture-content organic solid waste according to claim 1, characterized in that, The adaptive blocking mechanism includes: A square rod is fixedly connected to the end of the spiral conveyor rod away from the motor; A movable plate is slidably sleeved on the square rod, and a sealing plate is rotatably installed on it. The sealing plate is used to seal the opening of the filter cartridge. A fixed plate is fixedly sleeved on the square rod and connected to the movable plate by a first spring. A frustum plate is slidably fitted onto the square rod and connected to a movable plate via multiple connecting rods; Multiple centrifugal pendulums are equidistantly mounted on the arc surface of the frustum plate.

3. The low-cost dewatering and drying device for high-moisture-content organic solid waste according to claim 2, characterized in that, The drive mechanism includes: A limiting ring is fixedly sleeved on the filter cylinder, and an annular groove is provided on one side of the ring. The toothed ring is fixedly sleeved on the filter cylinder.

4. The low-cost dewatering and drying device for high-moisture-content organic solid waste according to claim 3, characterized in that, The unblocking mechanism includes: A cylinder with a rotating shaft installed at one end and a sleeve installed at the other end, wherein the rotating shaft is slidably connected to the annular groove of a limiting ring. Multiple grooves are formed on the cylinder; Multiple movable plates are slidably connected to multiple of the aforementioned grooves; Multiple push rods are respectively mounted on multiple movable plates and extend out of multiple grooves; Multiple second springs are respectively disposed in multiple grooves, one end of the second spring is fixedly connected to the movable plate, and the other end of the second spring is connected to the inner wall of the groove.

5. The low-cost dewatering and drying device for high-moisture-content organic solid waste according to claim 4, characterized in that, The unblocking mechanism also includes: The first gear is fixedly sleeved on the rotating shaft and meshes with the gear ring. The bent rod has one end inserted into the sleeve and the other end fixedly connected to the movable plate.

6. The low-cost dewatering and drying device for high-moisture-content organic solid waste according to claim 2, characterized in that, The adaptive blocking mechanism also includes: The horizontal shaft is fixedly connected to the end of the square rod away from the spiral conveyor rod, and rotatably connected to the bearing seat mounted on the fixed frame.

7. The low-cost dewatering and drying device for high-moisture-content organic solid waste according to claim 6, characterized in that, The drying mechanism includes: A fixed cylinder is located below the adaptive sealing mechanism, and multiple heating plates are installed on its outer surface; The fixed box is fixedly connected to the fixed cylinder by multiple reinforcing rods.

8. The low-cost dewatering and drying device for high-moisture-content organic solid waste according to claim 7, characterized in that, The drying mechanism also includes: The vertical rod is located inside the fixed cylinder and is rotatably connected to the fixed box; The second gear is located inside the fixed box and is fixedly connected to the vertical rod; Multiple scrapers are equidistantly mounted on the vertical rod, and all of them are in contact with the inner bottom surface of the fixed cylinder; A rack with a connecting block fixedly connected to it, the connecting block being fixedly connected to a connecting ring rotatably mounted on a frustum plate, the rack meshing with the second gear, passing through the fixed box and slidably connected to the fixed box.

9. The low-cost dewatering and drying device for high-moisture-content organic solid waste according to claim 8, characterized in that, The drying mechanism also includes: The rotating drum is rotatably mounted on the vertical rod and rotatably connected to the fixed box. The second bevel gear is located inside the fixed box and is fixedly connected to the rotating drum; The stirring rod is located inside the fixed cylinder and is fixedly connected to the rotating cylinder.

10. The low-cost dewatering and drying device for high-moisture-content organic solid waste according to claim 9, characterized in that, The drying mechanism also includes: The crossbar is rotatably connected to the fixed box; The first bevel gear is located inside the fixed box, fixedly connected to the crossbar, and meshes with the second bevel gear. The drive belt is fitted onto the horizontal shaft and the horizontal bar.

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