A sludge treatment device for sponge city water storage tanks

Abstract

This invention relates to the field of sewage sludge treatment technology, specifically to a sludge treatment device for sponge city reservoirs. It includes a bottom base, a guide rod vertically fixed to the top of the bottom base, and a top base fixed to the top of the guide rod. Below the top base, a lifting and adjustable extrusion core is installed via a lifting mechanism. Above the bottom base, a water collection cylinder adapted to and vertically connected to the extrusion core is provided. An annular groove is provided on the inner wall of the water collection cylinder, and an annular filter plate is fixed within the annular groove, with the inner edge of the annular filter plate flush with the inner edge of the water collection cylinder. This invention provides an annular groove, a cavity, an inlet channel, and a drain pipe on the extrusion core, forming a pumping system. During drainage, water flows backward through the filter holes of the annular filter plate into the cavity, forming a backwash flow path. This automatically removes particulate impurities accumulated inside the filter holes of the annular filter plate, preventing filter blockage, maintaining dewatering efficiency, and reducing the frequency of manual cleaning.

Description

Technical Field

[0001] This invention relates to the field of sewage and sludge treatment technology, specifically to a sludge treatment device for sponge city water storage tanks. Background Technology

[0002] Sponge cities are urban development models that simulate the functions of a sponge—infiltration, retention, storage, purification, utilization, and drainage—through planning and construction. They aim to achieve on-site rainwater absorption and recycling, balancing flood control and ecological protection. The pollutants in sponge city reservoirs mainly originate from silt, garbage, suspended solids, and small amounts of pollutants carried by rainwater runoff. These pollutants settle or adhere to the reservoirs, forming sludge.

[0003] In existing technologies, sludge in water storage tanks is usually cleaned periodically using sludge removal equipment. After cleaning, the sludge also needs to be dewatered. Chinese utility model patent with authorization announcement number CN214218529U discloses a rotary hydraulic extrusion sludge deep dewatering device. This device achieves sludge dewatering through extrusion, effectively reducing the water content of the sludge to facilitate subsequent sludge drying operations.

[0004] The aforementioned equipment has a horizontal layout, which occupies a large amount of space in the horizontal direction. It is easily restricted by site space, increases site selection and infrastructure costs, and is not conducive to flexible deployment in areas with limited space in sponge cities. In addition, after long-term operation, too much particulate matter will accumulate in the filter holes of the filter structure, causing blockage and affecting dewatering efficiency. The aforementioned equipment cannot automatically clean the blockage in the filter holes, resulting in high maintenance costs. Summary of the Invention

[0005] The purpose of this invention is to provide a sludge treatment device for reservoirs in sponge cities, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A sludge treatment device for a sponge city reservoir includes a bottom base, a guide rod vertically fixed to the top of the bottom base, and a top base fixed to the top of the guide rod. A lifting and adjustable extrusion core is installed below the top base via a lifting mechanism. A water collection cylinder, adapted to and vertically connected to the extrusion core, is located above the bottom base. An annular groove is provided on the inner wall of the water collection cylinder, and an annular filter plate is fixed within the annular groove. The inner edge of the annular filter plate is flush with the inner edge of the water collection cylinder, forming an annular water collection cavity between the annular filter plate and the annular groove. A sludge collection mechanism is provided at the bottom of the water collection cylinder to collect dewatered sludge and form it into sludge cakes. An annular groove is provided on the outer peripheral wall of the extrusion core near its bottom end. A cavity is provided inside the extrusion core, and several inlet channels, all communicating with the annular groove, are arranged in an annular array on the inner side wall of the cavity. A drain pipe communicating with the cavity is also provided inside the extrusion core.

[0008] Preferably, multiple drain pipes are provided and distributed in a ring array around the extrusion core; the drain pipes are bent in an inverted L-shape inside the extrusion core, with one end of each drain pipe extending through into the cavity and the other end extending through into the outside of the extrusion core and communicating with an external water collection device; a filter screen is installed inside each drain pipe and below the top wall of the cavity.

[0009] Preferably, a drain port communicating with the cavity is opened at the bottom end of the extrusion core; a vertically extending stepped hole is provided on the top wall of the cavity, and a blocking component is slidably installed in the stepped hole, with a traction rod vertically fixed on the lower surface of the blocking component; a sealing seat for blocking the drain port is fixedly installed at the bottom end of the traction rod; an electromagnet is embedded in the top wall of the stepped hole, and the electromagnet and the blocking component are magnetically attracted to each other. When the blocking component is magnetically attracted to the electromagnet, the sealing seat blocks the drain port; a one-way valve is installed in each inlet channel, and the flow direction of the one-way valve is from the inlet channel to the cavity.

[0010] Preferably, the sludge collection mechanism includes a second hydraulic cylinder, a third hydraulic cylinder, a forming cylinder, and a push plate; the bottom base has an inner cavity, and a pair of second hydraulic cylinders are vertically fixedly installed on the bottom wall of the inner cavity, with connecting rods vertically fixedly installed on the telescopic ends of the two second hydraulic cylinders; the forming cylinder is fixedly installed on the top of the two connecting rods with its opening facing upward; when the second hydraulic cylinder retracts to its limit position, the top of the forming cylinder extends into the annular filter plate and movably fits against the inner edge wall of the annular filter plate; a fixing frame is fixedly fitted on both connecting rods, and the third hydraulic cylinder is vertically fixed above the fixing frame; the push plate is matched and installed inside the forming cylinder, and the telescopic end of the third hydraulic cylinder extends through into the forming cylinder and is fixedly connected to the bottom of the push plate.

[0011] Preferably, the lifting mechanism includes an upper base and a first hydraulic cylinder; the upper base is slidably mounted on a guide rod; the first hydraulic cylinder is vertically fixed on the top base, with the telescopic end of the first hydraulic cylinder facing downwards and connected to the upper surface of the upper base; the extrusion core is fixedly mounted through the upper base; a stepped sliding cavity is provided inside the top base; a retaining ring is fixed on the outer wall of the extrusion core near its top, and the top of the extrusion core is slidably mounted in the stepped sliding cavity by the retaining ring.

[0012] Preferably, a lower base is slidably fitted onto the guide rod and below the upper base; the top of the water collecting cylinder is embedded in the lower base, and the top end face of the water collecting cylinder is flush with the upper surface of the lower base; front and rear extending guide rails are fixed on both sides of the water collecting cylinder above the lower base, and a material guide platform is fixed on the rear side of the water collecting cylinder between the two guide rails, and the upper surface of the material guide platform is flush with the upper surface of the lower base; a driving mechanism is provided on one side of the lower base, and a loading frame with its bottom end face slidably attached to the upper surface of the material guide platform is provided on the material guide platform; the driving mechanism is used to drive the loading frame to move back and forth.

[0013] Preferably, the loading frame includes a bottom frame and an upper frame; a screen is installed obliquely inside the upper frame; the upper frame is slidably fitted on top of the bottom frame, and guide wheels are rotatably installed on both sides of the upper frame, with the two guide wheels correspondingly positioned and supported on two guide rails; the upper surface of each guide rail is provided with several protrusions at intervals along its length, and the protrusions abut against the guide wheels.

[0014] Preferably, a connecting frame is fixed to the front side of the bottom frame, and a push plate is fixed to the end of the connecting frame; the bottom end of the push plate slides against the upper surface of the guide plate, and the two sides of the push plate slide against the guide rails on both sides respectively.

[0015] Preferably, a discharge port is provided on the side of the upper frame away from the push plate, and the bottom end of the screen is connected to the discharge port; a shaft is rotatably installed above the discharge port, and a baffle for blocking the discharge port is fixedly fitted on the shaft; a blocking block is fixedly installed inside the discharge port to restrict the baffle to a vertical position; a horizontally placed U-shaped pusher is fixed on the rear side of the guide platform; the pusher abuts against the baffle to push the baffle to rotate inward and open.

[0016] Preferably, the drive mechanism includes a drive frame, a threaded rod, a drive motor, and a nut seat; the drive frame is fixed to the side of the lower base, and the threaded rod is rotatably mounted on the drive frame; the drive motor is fixed to one end of the drive frame, and the output shaft of the drive motor is fixedly connected to one end of the threaded rod; the nut seat is threadedly fitted onto the threaded rod; a slide rod is fixed on the drive frame, and the nut seat is slidably fitted onto the slide rod; a connecting arm is fixed to the side of the nut seat, and the other end of the connecting arm is fixedly connected to the side of the push plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0018] The present invention provides an annular groove, cavity, inlet channel and drain pipe on the extrusion core to form a water pumping system. During the drainage process, the water flows back into the cavity through the filter holes of the annular filter plate to form a backwash flow path, which can automatically remove particulate impurities accumulated on the inside of the filter holes of the annular filter plate, prevent filter hole blockage, maintain dewatering efficiency and reduce the frequency of manual cleaning.

[0019] This invention utilizes the coordinated operation of a second hydraulic cylinder, a third hydraulic cylinder, a forming cylinder, and a pusher plate to automatically push the dewatered sludge cake upwards and discharge it after the extrusion core moves upwards and resets. At the same time, the design of the forming cylinder and the inner wall of the annular filter plate in a movable fit effectively prevents the sludge cake from scraping the filter holes and causing secondary blockage during the lifting process.

[0020] This invention uses an inclined screen set in the upper frame, combined with the intermittent contact between the guide wheel and the protrusion to generate vibration, which can screen large-volume impurities in the sludge in real time during the feeding process, and prevent large-volume impurities from entering the annular filter plate and affecting the dewatering effect.

[0021] This invention employs a vertical layout structure, with a bottom base, guide rods, and a top base forming an overall support frame, allowing the extrusion core to move vertically up and down. This effectively reduces the space occupied by the device in the horizontal direction, overcomes the site limitations of horizontal equipment, and improves the integration and site adaptability of the equipment. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a partial structural diagram of the area above the lower base.

[0024] Figure 3 for Figure 2 A partial cross-sectional schematic diagram of the structure shown;

[0025] Figure 4 This is a schematic diagram of the internal structure of the extruded core;

[0026] Figure 5 for Figure 1 The diagram shows a partial cross-sectional view of the structure.

[0027] Figure 6 This is one of the schematic diagrams of the sludge collection mechanism in this invention;

[0028] Figure 7 This is the second schematic diagram of the sludge collection mechanism in this invention;

[0029] Figure 8 A schematic diagram showing the flow direction of water when backwashing the filter holes of an annular filter plate;

[0030] Figure 9 This is a partial structural diagram of the lower base in this invention;

[0031] Figure 10 This is a schematic diagram of the drive mechanism structure in this invention;

[0032] Figure 11 This is a schematic diagram of the structure when the baffle is tilted and open for material discharge.

[0033] In the diagram: 1. Bottom base; 101. Inner cavity; 102. Support column; 103. Annular pressure platform; 11. Top base; 111. Stepped sliding cavity; 112. Retaining ring; 12. Guide rod; 13. Lower base; 14. Upper base; 141. First hydraulic cylinder; 2. Water collecting cylinder; 21. Annular groove; 22. Storage platform; 3. Annular filter plate; 31. Annular water collecting cavity; 4. Sludge collection mechanism; 41. Second hydraulic cylinder; 42. Connecting rod; 43. Fixing frame; 44. Third hydraulic cylinder; 45. Forming cylinder; 46. Top push plate; 5. Extrusion core; 501. Annular groove; 502. Cavity; 503. Drain outlet; 51. Sealing seat; 52. Traction rod; 53. Blocking component; 54. Stepped hole; 55. Electromagnet; 56. Inlet channel; 57. Drain pipe; 58. Filter screen; 6. Guide rail; 61. Guide platform; 62. Protrusion; 7. Bottom frame; 71. Connecting frame; 72. Push plate; 8. Upper frame; 81. Screen; 82. Discharge port; 821. Blocking block; 83. Shaft; 84. Baffle; 85. Guide wheel; 86. Pushing component; 9. Drive mechanism; 91. Drive frame; 911. Slide rod; 92. Threaded rod; 93. Drive motor; 94. Nut seat; 95. Connecting arm. Detailed Implementation

[0034] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0035] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly, wherein "fixed" means that the devices or elements are connected to each other and their relative positional relationship remains unchanged after connection. The directional terms mentioned in the embodiments of the present invention are only for reference to the directions in the accompanying drawings, and are intended to better and more clearly illustrate and understand the embodiments of the present invention. They are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limitations on the embodiments of the present invention.

[0036] Example 1

[0037] Please see Figures 1-11 This invention provides a sludge treatment device for a sponge city reservoir, including a bottom base 1, guide rods 12 vertically fixed to the top of the bottom base 1, and a top base 11 fixed to the top of the guide rods 12. There are four guide rods 12, which are fixed at the four corners of the bottom base 1, and the top base 11 is fixed to the top of the four guide rods 12. A pressing core 5 is installed below the top base 11 through a lifting mechanism. A water collection cylinder 2 adapted to the pressing core 5 is provided above the bottom base 1. The water collection cylinder 2 is vertically through, and the top port of the water collection cylinder 2 serves as the inlet for sludge containing sewage and the outlet for sludge cake.

[0038] The lifting mechanism is used to drive the extrusion core 5 to adjust its height, thereby achieving the downward pressing action, such as... Figure 2 and Figure 3 As shown, the lifting mechanism includes an upper base 14 and a first hydraulic cylinder 141. The upper base 14 is slidably mounted on four guide rods 12. The first hydraulic cylinder 141 is vertically fixed on the top base 11, with its telescopic end facing downwards and connected to the upper surface of the upper base 14. The extrusion core 5 is fixed through the upper base 14. Through the telescopic operation of the first hydraulic cylinder 141, the upper base 14 and the extrusion core 5 can be driven to move vertically as a whole, providing effective drive for the downward extrusion dehydration and upward resetting actions of the extrusion core 5.

[0039] In addition, a stepped sliding cavity 111 is provided in the top base 11, and a retaining ring 112 is fixed on the outer wall of the extrusion core 5 near its top. The top of the extrusion core 5 is slidably installed in the stepped sliding cavity 111 by the retaining ring 112. The retaining ring 112 and the internal structure of the stepped sliding cavity 111 work together to block the extrusion core 5, thereby preventing the top of the extrusion core 5 from descending excessively and coming out of the stepped sliding cavity 111.

[0040] like Figure 7 As shown, an annular groove 21 is provided on the inner wall of the water collecting cylinder 2. An annular filter plate 3 is fixed in the annular groove 21 (the top of the annular filter plate 3 is fixed to the top wall of the annular groove 21, and the bottom of the annular filter plate 3 is fixed to the bottom wall of the annular groove 21). The inner edge wall of the annular filter plate 3 is flush with the inner edge wall of the water collecting cylinder 2 to form a complete inner wall structure. An annular water collecting cavity 31 is formed between the annular filter plate 3 and the annular groove 21. The squeezed water can be temporarily stored in the annular water collecting cavity 31 after passing through the filter holes on the annular filter plate 3. A sludge collection mechanism 4 is provided at the bottom of the water collecting cylinder 2 to collect the dewatered sludge and form it into a sludge cake. At the same time, the sludge collection mechanism 4 can also push the sludge cake upward and discharge it.

[0041] like Figure 4 As shown, an annular groove 501 is provided on the outer peripheral wall of the extrusion core 5 near its bottom end. A cavity 502 is provided inside the extrusion core 5. The bottom wall of the cavity 502 is a slope with a diameter that decreases downwards, so that the water can converge towards the center of the bottom of the cavity 502. Several inlet channels 56 are arranged in an annular array on the inner side wall of the cavity 502. All inlet channels 56 extend radially along the extrusion core 5 and are connected to the annular groove 501.

[0042] In addition, the extrusion core 5 is provided with a plurality of drain pipes 57 communicating with the cavity 502. The number of drain pipes 57 is preferably six, and the six drain pipes 57 are arranged in a ring array around the extrusion core 5. The drain pipes 57 are bent in an inverted L-shape inside the extrusion core 5. One end of each drain pipe 57 extends into the cavity 502, and the other end extends into the outside of the extrusion core 5 and communicates with an external water collection device (not shown in the figure). Specifically, the drain pipes 57 are connected to a water pump in the water collection device. With the operation of the water pump, a water pumping pipeline can be formed in conjunction with each drain pipe 57. Furthermore, each drain pipe 57 is equipped with a filter screen 58 located below the top wall of the cavity 502 to filter the water pumped into the drain pipe 57 to intercept particulate impurities in the water.

[0043] like Figure 4 As shown, a drain port 503 is provided at the bottom of the extrusion core 5, and the drain port 503 is connected to the bottommost part of the cavity 502. The top wall of the cavity 502 is provided with a vertically extending stepped hole 54. A blocking member 53 is slidably installed in the stepped hole 54. A traction rod 52 is vertically fixed on the lower surface of the blocking member 53. A sealing seat 51 for blocking the drain port 503 is fixedly installed at the bottom of the traction rod 52. An electromagnet 55 is fixedly embedded in the top wall of the stepped hole 54. The blocking member 53 is made of a magnetic metal material and magnetically attracted to the blocking member 53. When the blocking member 53 is magnetically attracted to the electromagnet 55, the sealing seat 51 is in the state of blocking the drain port 503. In addition, a one-way valve (not shown in the figure) is installed in each inlet channel 56, and the flow direction of the one-way valve is from the inlet channel 56 to the cavity 502.

[0044] like Figure 5 As shown, a lower base 13 is slidably fitted onto the four guide rods 12 and located below the upper base 14. The top of the water collecting cylinder 2 is embedded in the lower base 13, and the top end face of the water collecting cylinder 2 is flush with the upper surface of the lower base 13. Figure 1 As shown, a storage platform 22 extending forward is fixed on the outer wall of the water collection cylinder 2 and located between the lower base 13 and the bottom base 1.

[0045] The working principle of this embodiment is as follows:

[0046] Step 1: The first hydraulic cylinder 141 retracts, driving the upper base 14 and the extrusion core 5 to the reset state, avoiding obstruction of the top port of the water collection cylinder 2 and the space above it. Then, the sludge (with high water content) collected in the sponge city water storage tank is quantitatively added to the annular filter plate 3 through the top port of the water collection cylinder 2.

[0047] Step 2: The first hydraulic cylinder 141 extends and pushes the upper base 14 and the extrusion core 5 downward as a whole. The extrusion core 5 enters the annular filter plate 3 from the top port of the water collection cylinder 2. As the first hydraulic cylinder 141 continues to extend and push the extrusion core 5 downward, the extrusion core 5 can continuously squeeze the sludge in the annular filter plate 3 (when the sludge is squeezed to a certain extent, the reaction force of the sludge squeezing pushes the sealing seat 51 upward to block the sewage outlet 503. At the same time, the blocking part 53 abuts against the electromagnet 55). The sewage in the sludge is squeezed out and flows into the annular water collection cavity 31 through the filter holes on the annular filter plate 3.

[0048] Step 3: The water pump in the water collection equipment starts working, forming a water pumping passage. The sewage in the annular water collection chamber 31 flows back into the annular groove 501 through the filter holes on the annular filter plate 3 corresponding to the position of the annular groove 501, and enters the cavity 502 through the inlet channel 56 (at this time, the sewage outlet 503 is blocked by the sealing seat 51, and the water will not flow out from the sewage outlet 503). The sewage in the cavity 502 can be pumped to the external water collection equipment through the drain pipe 57 to achieve separation and dehydration.

[0049] Step 4: As the first hydraulic cylinder 141 extends and continuously pushes the extrusion core 5 down to the predetermined position, a large amount of water in the sludge is squeezed out (at this time, the water content in the sludge is low, which meets the dewatering requirements), and the sludge is compressed into a sludge cake, which is then received by the sludge collection mechanism 4.

[0050] Step 5: The first hydraulic cylinder 141 retracts and drives the extrusion core 5 to move upward and reset. Then, it moves upward through the sludge collection mechanism 4, which can push the sludge cake upward until the sludge cake is discharged from the top port of the water collection cylinder 2. Then, the above steps are repeated to carry out the next round of sludge extrusion and dewatering treatment.

[0051] It is worth noting that:

[0052] In step two above, due to continuous compression, particles are prone to penetrate from the inside out into the filter holes on the annular filter plate 3, causing blockage. In other words, the blockage is mainly located at the inner port of the filter holes on the annular filter plate 3.

[0053] In step three above, when the water is pumped out through drain pipe 57, its flow direction is as follows: Figure 8 As shown by the arrow, the water in the annular water collection chamber 31 can pass through the filter holes on the annular filter plate 3 in the reverse direction and flow into the cavity 502 through the inlet channel 56. This can backwash and clean the filter holes on the annular filter plate 3 corresponding to the position of the inlet channel 56. It can also backwash the particulate impurities that have accumulated at the inner port of the filter holes into the cavity 502, thereby cleaning the annular filter plate 3. Moreover, the backwash cleaning point moves downward synchronously with the downward movement of the extrusion core 5, ensuring that the backwash cleaning range is sufficient to cover most of the filter holes on the annular filter plate 3, resulting in a good cleaning effect.

[0054] In step two above, the electromagnet 55 is energized to magnetically attract the blocking member 53, so that the sealing seat 51 continues to block the drain port 503. In step five above, when the extrusion core 5 moves upward to reset, since the drain port 503 is blocked by the sealing seat 51, combined with the one-way valve built into the inlet channel 56, the water in the cavity 502 can be prevented from flowing back into the annular filter plate 3 through the drain port 503 and the inlet channel 56, thus avoiding secondary pollution to the formed sludge cake.

[0055] After the sludge cake is discharged and transferred, since the drain outlet 503 is directly opposite the center of the top port of the water collection cylinder 2, when the water pump stops working, the water remaining in the drain pipe 57 will flow back into the cavity 502, which can also backwash and clean the filter screen 58. At the same time, the electromagnet 55 is de-energized, and under the action of gravity, the sealing seat 51 and the traction rod 52 move downward as a whole. The sealing seat 51 cancels the sealing of the drain outlet 503, and the water containing a small amount of particulate matter in the cavity 502 is finally discharged through the drain outlet 503 and falls into the water collection cylinder 2 (the water collection cylinder 2 contains sewage in advance and will not affect the next round of sludge dewatering).

[0056] This application dewaters the sludge collected in the reservoirs of sponge cities. The wastewater squeezed out is then further treated in subsequent processes and can be used for industrial, agricultural, or urban miscellaneous water use. The formed sludge cakes can be used for landscaping composting, brick-making raw materials, biomass fuel conversion, or safe landfill disposal. Through efficient sludge dewatering and wastewater recycling, this approach not only aligns with the core mechanism of sponge cities and promotes the recycling of rainwater resources, but also reduces the pollution of water bodies and soil by sludge and wastewater. This aligns with water pollution prevention and control goals and the concept of green and environmentally friendly development, and promotes the sustainable construction of urban ecology.

[0057] Example 2

[0058] Please see Figure 5 , Figure 6 and Figure 7 This embodiment is used to explain in detail the sludge collection mechanism 4 in Embodiment 1, as follows:

[0059] Specifically, the sludge collection mechanism 4 includes a second hydraulic cylinder 41, a third hydraulic cylinder 44, a forming cylinder 45, and a push plate 46. The bottom base 1 has an inner cavity 101. A pair of second hydraulic cylinders 41 are vertically fixed on the bottom wall of the inner cavity 101. A connecting rod 42 is vertically fixed on the telescopic ends of the two second hydraulic cylinders 41. The forming cylinder 45 is fixedly installed on the top of the two connecting rods 42 with its opening facing upward. When the second hydraulic cylinders 41 retract to their limit position, the top of the forming cylinder 45 extends into the annular filter plate 3 and moves into contact with the inner edge wall of the annular filter plate 3. A fixing frame 43 is fixedly fitted on both connecting rods 42. The third hydraulic cylinder 44 is vertically fixed above the fixing frame 43. The push plate 46 is matched and installed in the forming cylinder 45. The telescopic end of the third hydraulic cylinder 44 extends through into the forming cylinder 45 and is fixedly connected to the bottom of the push plate 46.

[0060] In step one of the above embodiments, the second hydraulic cylinder 41 is retracted to its limit (the third hydraulic cylinder 44 is also retracted to its limit, so that the push plate 46 is at the bottom of the forming cylinder 45). At this time, as Figure 8 As shown, the top of the forming cylinder 45 extends into the annular filter plate 3 as a receiving component. As the extrusion core 5 continues to descend and extrude, the sludge is eventually pressed into the forming cylinder 45 and formed into a sludge cake.

[0061] After the extrusion core 5 returns to its original position and before the sewage in the cavity 502 is discharged, the second hydraulic cylinder 41 extends and works, pushing the forming cylinder 45 and the sludge cake inside it upward under the connection of the connecting rod 42, until the top end face of the forming cylinder 45 is flush with the top end face of the water collecting cylinder 2. Then, the third hydraulic cylinder 44 extends and works, pushing the push plate 46 upward. The push plate 46 pushes the sludge cake in the forming cylinder 45 upward until the top surface of the forming cylinder 45 is flush with the end face of the water collecting cylinder 2. A container for receiving the sludge cake is placed on the storage platform 22. Using the subsequent pushing structure, the sludge cake is pushed forward until it falls into the container on the storage platform 22, thus realizing the discharge and collection of the sludge cake.

[0062] It is worth noting that when the extrusion core 5 descends to the predetermined limit position, the bottom end face of the extrusion core 5 is in contact with the top end face of the forming cylinder 45, so that the height of the sludge cake does not exceed the top of the forming cylinder 45. As a result, during the process of the forming cylinder 45 moving upward to transport the sludge cake, the entire sludge cake is located inside the forming cylinder 45, which can prevent the sludge cake from contacting the inner wall of the annular filter plate 3 again, thereby preventing the sludge from being scraped off and clogging the filter holes again.

[0063] In addition, such as Figure 5As shown, several vertically extending support columns 102 are fixed in a ring array on the bottom wall of the inner cavity 101. The top of the support columns 102 are all fixed with a ring-shaped pressure plate 103. When the forming cylinder 45 descends to the limit position, the bottom of the forming cylinder 45 abuts against the top surface of the ring-shaped pressure plate 103, providing stable support for the forming cylinder 45 and improving the pressure bearing capacity of the forming cylinder 45. In addition, the push plate 46 achieves effective pressure bearing by abutting against the inner bottom wall of the forming cylinder 45 with its bottom.

[0064] Example 3

[0065] Please see Figure 1 , Figure 9 and Figure 10 The difference between this embodiment and Embodiment 2 is that:

[0066] Above the lower base 13, on both sides of the water collection cylinder 2, there are guide rails 6 extending forward and backward respectively. Behind the water collection cylinder 2 and between the two guide rails 6, there is a guide platform 61, and the upper surface of the guide platform 61 is flush with the upper surface of the lower base 13. A drive mechanism 9 is provided on one side of the lower base 13. A loading frame with its bottom end face slidingly attached to the upper surface of the guide platform 61 is provided on the guide platform 61. The drive mechanism 9 is used to drive the loading frame to move back and forth.

[0067] The loading frame includes a bottom frame 7 and an upper frame 8. A screen 81 is installed obliquely inside the upper frame 8. The upper frame 8 is slidably fitted above the bottom frame 7. Guide wheels 85 are rotatably installed on both sides of the upper frame 8. The two guide wheels 85 are correspondingly limited and supported on two guide rails 6. The upper surface of the guide rails 6 is provided with a number of protrusions 62 at intervals along its length. The protrusions 62 abut against the guide wheels 85.

[0068] In addition, a connecting frame 71 is fixed to the front side of the bottom frame 7, and a push plate 72 is fixed to the end of the connecting frame 71. The bottom end of the push plate 72 slides against the upper surface of the guide table 61, and the two sides of the push plate 72 slide against the guide rails 6 on both sides respectively.

[0069] like Figure 10As shown, the drive mechanism 9 includes a drive frame 91, a threaded rod 92, a drive motor 93, and a nut seat 94. The drive frame 91 is fixed to the side of the lower base 13. The threaded rod 92 is rotatably mounted on the drive frame 91. The drive motor 93 is fixed to one end of the drive frame 91, and the output shaft of the drive motor 93 is fixedly connected to one end of the threaded rod 92. The nut seat 94 is threadedly fitted onto the threaded rod 92. A slide rod 911 is fixed on the drive frame 91, and the nut seat 94 is slidably fitted onto the slide rod 911. A connecting arm 95 is fixed to the side of the nut seat 94, and the other end of the connecting arm 95 is fixedly connected to the side of the push plate 72. The drive motor 93 drives the threaded rod 92 to rotate, and the rotating threaded rod 92 drives the nut seat 94 to move and adjust along the slide rod 911. Combined with the fixed connection of the connecting arm 95, the loading frame can be moved and adjusted in the front and rear directions.

[0070] The working principle of this embodiment is as follows:

[0071] The drive mechanism 9 drives the loading frame to move backward to the loading position. Sludge collected from the sponge city's reservoir is quantitatively fed into the upper frame 8 via a conveying system. Then, the drive mechanism 9 drives the entire loading frame forward to transfer the sludge to the collection cylinder 2. During this transfer, the guide wheel 85 intermittently contacts and presses against the protrusion 62 on the guide rail 6, causing the guide wheel 85 and the upper frame 8 to perform periodic reciprocating lifting and lowering motion relative to the bottom frame 7, thereby... With the generation of vibration, combined with the screening effect of screen 81, large-volume impurities in the sludge can be filtered out. The screened sludge falls into the bottom frame 7 below (the bottom end of the bottom frame 7 is tightly attached to the upper surface of the guide platform 61, the inner wall of the upper frame 8 is tightly attached to the outer wall of the bottom frame 7, and both are treated with anti-seepage measures. The specific anti-seepage measures adopt existing technology to avoid mud and water leakage). When the bottom frame 7 is aligned with the top port of the water collection cylinder 2, the sludge inside falls into the annular filter plate 3, realizing the feeding of sludge.

[0072] During the sludge transfer process, the push plate 72 located on the front side of the bottom frame 7 moves synchronously with the bottom frame 7, which can push the sludge cake formed by the previous round of extrusion forward in advance, and at the same time realize the transfer of the sludge cake. This makes the timeline of sludge feeding and sludge cake transfer coincide, which reduces equipment manufacturing costs and ensures continuous matching of processes.

[0073] Example 4

[0074] Please see Figure 9 and Figure 11 The difference between this embodiment and embodiment 3 is as follows:

[0075] Specifically, a discharge port 82 is provided on the side of the upper frame 8 away from the push plate 72. The bottom end of the screen 81 is connected to the discharge port 82. A shaft 83 is rotatably installed above the discharge port 82. A baffle 84 for sealing the discharge port 82 is fixedly fitted on the shaft 83. A blocking block 821 that restricts the baffle 84 to a vertical position is fixedly installed inside the discharge port 82. In its natural state, the baffle 84 can hang vertically due to gravity, which can seal the discharge port 82. After the sludge is placed inside the upper frame 8, the sludge is squeezed from the inside and the blocking block 821 restricts the rotation of the baffle 84 from the outside, so that the baffle 84 continues to maintain the posture of sealing the discharge port 82, thus preventing mud and water leakage.

[0076] A horizontally placed U-shaped pusher 86 is fixed to the rear side of the guide table 61. The pusher 86 abuts against the baffle 84 and is used to push the baffle 84 to rotate inward and open.

[0077] Large impurities filtered out on screen 81 will roll and accumulate towards the bottom of screen 81 due to the vibration caused by the tilting and forward movement of screen 81. When the drive mechanism 9 drives the loading frame to move to the loading position, the pusher 86 abuts against the outer surface of the baffle 84. As the drive mechanism 9 continues to drive the loading frame to move rearward, the pusher 86 can push the baffle 84 to swing inward to the open state (e.g., ...). Figure 11 As shown by the dotted line structure in the diagram, at this time, large volume impurities above the screen 81 fall out through the discharge port 82. By setting a collection container below the drop point, the discharged large volume impurities can be collected for centralized treatment.

[0078] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Therefore, the present invention will not explain the control method and circuit connection in detail.

[0079] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. A sponge city water storage pool sludge treatment device, comprising a bottom base (1), a guide rod (12) vertically fixed on the top of the bottom base (1), and a top base (11) fixed on the top end of the guide rod (12), a lifting-adjustable extrusion core (5) is installed below the top base (11) through a lifting mechanism, a water collecting cylinder (2) is arranged above the bottom base (1) and is adapted to the extrusion core (5) and vertically penetrates, characterized in that: an annular groove (21) is arranged on the inner wall of the water collecting cylinder (2), an annular filter plate (3) is fixed in the annular groove (21), and the inner edge wall of the annular filter plate (3) is flush with the inner edge wall of the water collecting cylinder (2), and an annular water collecting cavity (31) is formed between the annular filter plate (3) and the annular groove (21); a sludge collecting mechanism (4) is arranged at the bottom of the water collecting cylinder (2) to collect and shape the dewatered sludge into a sludge cake; an annular groove (501) is arranged on the outer peripheral wall of the extrusion core (5) near the bottom end thereof, a cavity (502) is arranged in the extrusion core (5), a plurality of inflow holes (56) are arranged in the inner side wall of the cavity (502) in an annular array and are in communication with the annular groove (501), and a drain pipe (57) is further arranged in the extrusion core (5) and is in communication with the cavity (502); a sewage discharge port (503) is arranged at the bottom end of the extrusion core (5) and is in communication with the cavity (502); a vertically extending stepped hole (54) is arranged on the inner top wall of the cavity (502), a blocking piece (53) is limitingly and slidably installed in the stepped hole (54), and a traction rod (52) is vertically fixedly arranged on the lower surface of the blocking piece (53); a blocking seat (51) for blocking the sewage discharge port (503) is fixedly installed at the bottom end of the traction rod (52); an electromagnet (55) is embedded on the inner top wall of the stepped hole (54), the electromagnet (55) is magnetically attracted to the blocking piece (53), and when the blocking piece (53) is magnetically attracted to the electromagnet (55), the blocking seat (51) blocks the sewage discharge port (503); a one-way valve is installed in each inflow hole (56), and the flow direction of the one-way valve is from the inflow hole (56) to the cavity (502).

2. The sponge city water storage pool sludge treatment device according to claim 1, characterized in that: a plurality of drain pipes (57) are arranged and are arranged in an annular array around the extrusion core (5); the drain pipes (57) are inverted L-shapedly bent in the extrusion core (5), one ends of the drain pipes (57) extend into the cavity (502), and the other ends of the drain pipes (57) extend to the outside of the extrusion core (5) and are in communication with external water collecting equipment; a filter screen (58) is installed in each drain pipe (57) and below the inner top wall of the cavity (502).

3. The sponge city water storage pool sludge treatment device according to claim 1, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The sludge collecting mechanism (4) comprises a second hydraulic cylinder (41), a third hydraulic cylinder (44), a forming cylinder (45) and a pushing disc (46); The bottom base (1) is internally provided with an inner cavity (101), a pair of second hydraulic cylinders (41) are vertically and fixedly installed on the inner bottom wall of the inner cavity (101), and connecting rods (42) are vertically and fixedly installed on the telescopic ends of the two second hydraulic cylinders (41); The forming cylinder (45) is fixedly installed on the top ends of the two connecting rods (42) in an upward opening mode; When the second hydraulic cylinder (41) is retracted to the limit position, the top of the forming cylinder (45) extends into the annular filter plate (3) and is movably attached to the inner edge wall of the annular filter plate (3); The two connecting rods (42) are commonly fixedly sleeved with a fixing frame (43), and the third hydraulic cylinder (44) is vertically fixed above the fixing frame (43); The pushing disc (46) is matchedly installed in the forming cylinder (45), the telescopic end of the third hydraulic cylinder (44) extends into the forming cylinder (45), and the bottom of the pushing disc (46) is fixedly connected.

4. The sludge treatment device for sponge city water storage pool according to claim 1, characterized in that: The lifting mechanism comprises an upper base (14) and a first hydraulic cylinder (141); The upper base (14) is slidably sleeved on the guide rod (12); The first hydraulic cylinder (141) is vertically and fixedly installed on the top base (11), and the telescopic end of the first hydraulic cylinder (141) is downwardly arranged and connected with the upper surface of the upper base (14); The extrusion core (5) is fixedly penetrated in the upper base (14); The top base (11) is internally provided with a stepped sliding cavity (111); The extrusion core (5) is fixedly provided with a retaining ring (112) on the outer wall thereof and close to the top end thereof, and the top of the extrusion core (5) is limitingly and slidably installed in the stepped sliding cavity (111) through the retaining ring (112).

5. The sludge treatment device for sponge city water storage pool according to claim 4, characterized in that: The lower base (13) is slidably sleeved on the guide rod (12) below the upper base (14); The top end of the water collecting cylinder (2) is embedded in the lower base (13), and the top end surface of the water collecting cylinder (2) is flush with the upper surface of the lower base (13); The front and rear extending guide rails (6) are respectively fixed on the two sides of the water collecting cylinder (2) above the lower base (13), the material guiding table (61) is fixed on the rear side of the water collecting cylinder (2) between the two guide rails (6), and the upper surface of the material guiding table (61) is flush with the upper surface of the lower base (13); The driving mechanism (9) is arranged on one side of the lower base (13), and the loading frame is arranged on the material guiding table (61) and has a bottom end surface slidably attached to the upper surface of the material guiding table (61); The driving mechanism (9) is used for driving the loading frame to move forward and backward.

6. The sludge treatment device for sponge city water storage pool according to claim 5, characterized in that: The loading frame comprises a bottom frame body (7) and an upper frame body (8); A screen (81) is obliquely arranged in the upper frame body (8); The upper frame body (8) is slidably matched on the bottom frame body (7), and two guide wheels (85) are rotatably arranged on the two sides of the upper frame body (8) and are correspondingly limited and supported on the two guide rails (6); The upper surfaces of the guide rails (6) are provided with a plurality of protrusions (62) along the length direction, and the protrusions (62) are in contact with the guide wheels (85).

7. The device according to claim 6, wherein: The front side of the bottom frame body (7) is fixed with a connecting frame (71), and the end of the connecting frame (71) is fixed with a push plate (72); The bottom end of the push plate (72) is in sliding fit with the upper surface of the material guide table (61), and the two sides of the push plate (72) are in corresponding sliding fit with the two guide rails (6).

8. The device according to claim 7, wherein: The side of the upper frame body (8) away from the push plate (72) is provided with a discharge port (82), and the bottom end of the screen (81) is connected with the discharge port (82); The shaft rod (83) is rotatably arranged in the upper part of the discharge port (82), and the shaft rod (83) is fixedly provided with a baffle (84) for blocking the discharge port (82); The discharge port (82) is fixedly provided with a blocking block (821) for limiting the baffle (84) to be vertical; The rear side of the material guide table (61) is fixed with a push-resisting piece (86) in a transversely arranged U shape; The push-resisting piece (86) is in contact with the baffle (84) and is used for pushing the baffle (84) to rotate inwardly and open.

9. The device according to claim 7, wherein: The driving mechanism (9) comprises a driving frame (91), a threaded rod (92), a driving motor (93) and a nut seat (94); The driving frame (91) is fixed on the side of the lower base (13), and the threaded rod (92) is rotatably arranged on the driving frame (91); The driving motor (93) is fixed on one end of the driving frame (91), and the output shaft of the driving motor (93) is fixedly connected with one end of the threaded rod (92); The nut seat (94) is threadedly matched on the threaded rod (92); The driving frame (91) is fixedly provided with a sliding rod (911), and the nut seat (94) is slidably arranged on the sliding rod (911); The side of the nut seat (94) is fixedly provided with a connecting arm (95), and the other end of the connecting arm (95) is fixedly connected with the side of the push plate (72).

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