A spatial multi-layer ultra-high pressure box type dewatering system and a dewatering method

Abstract

The application discloses a kind of space multilayer superhigh pressure box dehydration system and dehydration method, including mainframe, cloth feeding device, cloth / unloading device, filter cloth, filter chamber, filter chamber moving device, filter chamber lifting hydraulic press, filter hydraulic press, hydraulic station and controller, cloth feeding device, cloth / unloading device, filter chamber moving device, filter chamber lifting hydraulic press, filter hydraulic press are connected on mainframe, cloth feeding device is installed on cloth / unloading device, cloth / unloading device is installed on the upper of filter chamber, filter cloth is wound on cloth / unloading device, filter chamber is installed on filter chamber moving device, filter chamber lifting hydraulic press is installed below cloth / unloading device and filter chamber moving device, filter chamber moving device, filter chamber lifting hydraulic press and filter hydraulic press are connected with hydraulic station, cloth feeding device, cloth / unloading device, filter chamber moving device, filter chamber lifting hydraulic press, filter hydraulic press and hydraulic station are electrically connected with controller.

Description

Technical Field

[0001] This invention belongs to the field of mechanical and physical dehydration technology of organic waste, specifically relating to a spatial multi-layer ultra-high pressure box-type dehydration system and dehydration method. Background Technology

[0002] Most organic waste generated in social production and daily life has a moisture content of 70% to 80% or higher. To effectively manage and utilize organic waste, turning it into a valuable resource, dehydration is crucial to minimizing its moisture content. Mechanical dehydration is one of the most common and efficient dehydration techniques. Common mechanical equipment used for organic waste dehydration includes belt filter presses, plate and frame filter presses, screw presses, centrifuges, and vacuum filters. Because plate and frame filter presses can dehydrate most high-moisture organic waste to 60% moisture content, and even some to below 50%, they are increasingly used in the dehydration of municipal sludge, cassava starch residue, and sugar refining filter mud.

[0003] However, under the new demands for lower moisture content, lower dewatering costs, and higher waste reduction, plate and frame filter presses cannot adequately meet these requirements for dewatering organic waste. This is mainly reflected in the following aspects: First, they cannot directly feed non-fluid organic waste with a moisture content below 85% for dewatering. Instead, water must be added to the organic waste to dilute it to a fluid content of 90% or even 95% before pumping it in for dewatering. This results in increased wastewater volume, which does not align with the policy direction of "pollution reduction and waste reduction." Second, dewatering... The first problem is that the efficiency is relatively low, with a single dewatering cycle often taking 4 to 6 hours. Secondly, before dewatering municipal sludge and other organic waste, more ferric chloride and other agents need to be added and stirred, leading to an increase in the dry basis weight of the waste and processing costs. Thirdly, the iron content in the sludge increases significantly, which is detrimental to fertilizer resource utilization. Fourthly, it is impossible to dewater organic waste to a moisture content of 50% or even below 40% in a short time and with high efficiency, resulting in high costs for subsequent environmental treatment and resource utilization. Fifthly, the filter cake is relatively thick, which greatly complicates subsequent fermentation, drying, and crushing processes, increasing processing costs.

[0004] Therefore, in the context of advocating resource recycling throughout society, better assisting in "pollution reduction and carbon reduction" and achieving the "dual carbon" goal as soon as possible, it is very necessary and meaningful to innovate and develop organic waste dewatering equipment that can overcome the technical shortcomings of the aforementioned plate and frame filter press dewatering machines, with higher dewatering efficiency, lower cost, and greater "pollution reduction and carbon reduction". Summary of the Invention

[0005] The purpose of this invention is to provide a spatial multi-layer ultra-high pressure box-type dehydration system and dehydration method to solve the technical problem of higher efficiency and lower cost dehydration in the current process of environmental treatment and resource utilization of high moisture content organic waste, and to provide technical support for continuously improving the level of environmental treatment and resource utilization of organic waste.

[0006] The objective of this invention and the technical problem it solves are achieved by the following technical solution. A spatial multi-layer ultra-high pressure box-type dewatering system according to this invention includes a main frame, a material feeding device, a material feeding / unloading device, filter cloth, a filter press chamber, a filter press chamber moving device, a filter press chamber lifting hydraulic press, a filter press hydraulic press, a hydraulic station, and a controller.

[0007] The fabric feeding device, the fabric / unloading device, the filter chamber moving device, the filter chamber lifting hydraulic press, and the filter press hydraulic press are connected and installed on the main frame;

[0008] The fabric feeding device is connected to the fabric / unloading device, and the fabric feeding device is installed above the fabric / unloading device; the fabric / unloading device is connected to the filter press chamber, and the fabric / unloading device is installed above the filter press chamber; the filter cloth includes an upper filter cloth and a lower filter cloth, which are respectively wound on the fabric / unloading device; the filter press chamber is connected and installed on the filter chamber moving device; the filter chamber lifting hydraulic press is connected and installed below the fabric / unloading device and the filter chamber moving device; the filter chamber moving device, the filter chamber lifting hydraulic press, and the filter press hydraulic press are respectively connected to the hydraulic station through hydraulic oil pipes; the fabric feeding device, the fabric / unloading device, the filter chamber moving device, the filter chamber lifting hydraulic press, the filter press hydraulic press, and the hydraulic station are electrically connected to the controller.

[0009] In one embodiment of the present invention, the filter press includes a filter cylinder, a filter base, a filter slide, a filter frame, and a filter worktable;

[0010] The filter press cylinder is connected and installed below the filter press base and the filter press slide; the filter press base is connected and installed on the main frame; the filter press slide is located between the filter press base and the filter press workbench; the filter press frame is connected between the filter press base and the filter press workbench; the filter press workbench is located above the filter press base.

[0011] In one embodiment of the present invention, the filter chamber moving device includes a horizontal push-pull hydraulic cylinder, moving rollers, and moving track;

[0012] The push-pull hydraulic cylinder is connected and installed between the filter press chamber and the main frame; the movable roller is connected and installed below the filter press chamber; the movable track is connected and installed on the main frame below the material feeding / unloading device, the movable roller, and above the filter press base.

[0013] The objectives of this invention and the technical problems it addresses can be further achieved by the following technical measures.

[0014] In one embodiment of the present invention, the aforementioned spatial multi-layer ultra-high pressure box-type dewatering system has one to four filter chambers, which are respectively installed on the four lateral filter chamber moving devices of the filter press.

[0015] In one embodiment of the present invention, the aforementioned spatial multi-layer ultra-high pressure box-type dewatering system uses a belt feeder, screw feeder, or screw pump feeder as its material feeding device.

[0016] In one embodiment of the present invention, the aforementioned multi-layer ultra-high pressure box-type dewatering system includes a filter press chamber comprising an inner lining plate, side wall plates, transverse stiffeners, vertical stiffeners, and a movable bottom plate.

[0017] The inner lining plate consists of four pieces, which are respectively connected and fixed to the inner side of the side wall plate; the side wall plate consists of four pieces, which are connected in pairs at the corners; the transverse stiffener and the vertical stiffener are respectively welded to the outer side of the side wall plate in the transverse and vertical directions; the movable bottom plate is installed in the filter press chamber.

[0018] In one embodiment of the present invention, the aforementioned spatial multi-layer ultra-high pressure box-type dewatering system further includes a filter cloth folding and positioning mechanism.

[0019] The filter cloth folding and positioning mechanism is connected and installed on the main frame at the upper corner of the filter press chamber, below the filter chamber moving device, or above the filter press chamber.

[0020] In one embodiment of the present invention, the aforementioned multi-layer ultra-high pressure box-type dewatering system further includes a filter chamber filter cloth fixing mechanism; the filter chamber filter cloth fixing mechanism is connected and installed on the movable base plate.

[0021] In one embodiment of the present invention, the aforementioned spatial multi-layer ultra-high pressure box-type dewatering system has its filter chamber surrounded by horizontal stiffening plates that are welded downwards.

[0022] In one embodiment of the present invention, the aforementioned spatial multi-layer ultra-high pressure box-type dewatering system further includes a material crushing device and / or a material conveying device.

[0023] The material crushing device is connected and installed at the rear end of the material feeding / unloading device; the material conveying device is connected and installed at the rear end of the material crushing device or / and the material feeding / unloading device;

[0024] The material crushing device is a twin-shaft spiral blade conveyor or a twin-shaft shredder or a ratchet roller conveyor; the material conveying device is a material belt conveyor or a material scraper conveyor or a material spiral conveyor.

[0025] In one embodiment of the present invention, the aforementioned spatial multi-layer ultra-high pressure box-type dehydration system further includes a material dosing and stirring device and / or a material water dosing and stirring device.

[0026] The material dosing and mixing device and / or the material water dosing and mixing device are connected and installed at the front end of the fabric feeding device.

[0027] This invention discloses a multi-layer ultra-high pressure box-type dehydration system and dehydration method, which includes the following steps:

[0028] Step S1: Start the equipment: Start the multi-layer ultra-high pressure box-type dewatering system through the controller, so that the feeding device, the feeding / unloading device, the filter chamber moving device, the filter chamber lifting hydraulic press, the filter press hydraulic press, and the hydraulic station are in the start-up standby state, and the filter chamber moving device moves the filter chamber to the feeding / unloading station below the feeding / unloading device;

[0029] Step S2: Material feeding: The controller controls the filter chamber lifting hydraulic press to lift the movable bottom plate of the filter chamber to the upper opening of the filter chamber. The controller also controls the material feeding device to transport the organic waste to be dewatered onto the lower filter cloth on the material feeding / unloading device. The material feeding / unloading device pulls the upper and lower filter cloths, which together enclose the dewatered material, and simultaneously feeds them into the filter chamber. The material feeding / unloading device neatly folds the finished filter cloth layer by layer onto the movable bottom plate of the filter chamber. While folding the finished filter cloth into the filter chamber, the filter chamber lifting hydraulic press supports the movable bottom plate and simultaneously lowers the filter chamber until the movable bottom plate reaches the bottom of the filter chamber. The material feeding / unloading device then fills the upper opening of the filter chamber with the finished filter cloth.

[0030] Step S3: Filter Press Dewatering: The controller controls the filter chamber moving device to push the filter chamber, after the material has been laid, from the material laying / unloading station to the filter press station of the hydraulic press. The controller controls the hydraulic press to perform an upward lifting action. The filter press slide of the hydraulic press lifts the movable bottom plate of the filter chamber upward. The movable bottom plate supports the folded material layer inside the filter chamber until it abuts against the filter press worktable. As the hydraulic press continues to perform the upward lifting action, the filter press slide continuously presses against the material. The folded material layer in the filter press chamber is squeezed vertically upwards. Under pressure, the water in the material flows through the filter cloth between the two layers to the periphery of the filter press chamber and is discharged through the drainage holes around the filter press chamber. When the set filtration time is reached, the filtration and dewatering are completed. The controller controls the hydraulic station to depressurize the filter press hydraulic press and causes the filter press slide to move downwards. The movable bottom plate of the filter press chamber and the material fall down under the action of gravity until the filter press slide completely exits the filter press chamber and the movable bottom plate returns to the bottom of the filter press chamber.

[0031] Step S4 Unloading: The controller controls the filter chamber moving device to pull the filter chamber from the filter press station of the filter press hydraulic press back to the material feeding / unloading device's material feeding / unloading station. The controller controls the filter chamber lifting hydraulic press to move upward, lifting the movable bottom plate and material in the filter chamber to the upper opening of the filter chamber. The controller starts the material feeding / unloading device to pull and recycle the filter cloth along the reverse traction of the material, pulling the filter cloth with material fragments out of the filter chamber layer by layer and unloading the material fragments between the two layers of filter cloth. At the same time, the filter chamber lifting hydraulic press supports the movable bottom plate and moves upward synchronously until the movable bottom plate rises to the upper opening of the filter chamber. The material feeding / unloading device recycles all the filter cloth and unloads the material fragments, completing the unloading of one filter press cycle.

[0032] Step S5 Filter Chamber Reset: The controller controls the filter chamber lifting hydraulic press to perform a lowering action and the material feeding / unloading device to push the filter cloth out. The movable bottom plate of the filter chamber and the filter cloth gradually descend back to the bottom of the filter chamber to complete the reset. One material pressure filtration and dewatering cycle is completed.

[0033] In one embodiment of the present invention, in the dewatering method of the aforementioned spatial multi-layer ultra-high pressure box-type dewatering system, the pressure of the filter press in step S3 is gradually increased so that the pressure on the material layer reaches more than 2.5 MPa and is continuously filtered for 10 to 60 minutes.

[0034] In step S3, there are two or more filter press chambers. After one of the filter press chambers completes the filtration and is pulled back to the feeding / unloading station of the feeding / unloading device by the filter chamber moving device, the other filter press chamber that has completed feeding is simultaneously pushed by the filter chamber moving device to the filtration station of the filter press hydraulic press for filtration.

[0035] Compared with existing technologies, this invention has significant advantages and beneficial effects. Through the above technical solution, the spatial multi-layer ultra-high pressure box-type dehydration system and dehydration method of this invention have at least one of the following advantages and beneficial effects:

[0036] First, it can directly feed and dehydrate non-fluid organic waste with a moisture content of less than 85%, without the need to dilute the organic waste with water, thus not increasing the amount of wastewater, which is more in line with the policy guidance of "pollution reduction and volume reduction".

[0037] Secondly, it has higher dewatering efficiency. It can dewater common organic wastes such as municipal sludge and cassava starch residue with a moisture content of about 80% to less than 50% in each filter press cycle, which is more than 80% shorter than that of plate and frame filter press.

[0038] Third, before dewatering organic waste such as municipal sludge, the dosage of added chemicals such as polyferric chloride is less or even not added at all. After dewatering, the dry basis weight of the waste increases less or not at all, which is more conducive to the subsequent resource utilization of fertilizer.

[0039] Fourth, the filter cake of organic waste after dehydration is relatively thin, generally only 3 to 5 mm thick, compared with the 20 to 40 mm of plate and frame filter press. This makes subsequent fermentation, drying and crushing easier, resulting in better processing performance and lower processing costs.

[0040] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in this invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a front view schematic diagram of the structure of Embodiment 1 of the present invention;

[0043] Figure 2 This is a main sectional view of the filter press chamber according to Embodiment 1 of the present invention;

[0044] Figure 3 This is a front view schematic diagram of the structure of Embodiment 2 of the present invention;

[0045] Figure 4 This is a front view schematic diagram of the structure of Embodiment 3 of the present invention;

[0046] Figure 5 This is a top view of the structure of Embodiment 3 of the present invention;

[0047] Figure 6 This is a top view of the structure of Embodiment 4 of the present invention;

[0048] Figure 7 This is a front view schematic diagram of the structure of Embodiment 5 of the present invention;

[0049] Figure label:

[0050] 1-Main rack;

[0051] 2- Fabric feeding device; 21- Belt feeder; 22- Screw feeder; 23- Screw pump feeder

[0052] 3- Fabric / unloading device;

[0053] 4-Filter cloth; 41-Upper filter cloth; 42-Lower filter cloth;

[0054] 5-Filter press chamber; 51-Inner lining plate; 52-Side wall plate; 53-Transverse stiffener; 54-Vertical stiffener; 55-Modible base plate; 56-Filter chamber filter cloth fixing mechanism;

[0055] 6-Filter chamber moving device; 61-Push-pull hydraulic cylinder; 62-Moving roller; 63-Moving track;

[0056] 7-Filter chamber lifting hydraulic press;

[0057] 8-Filter press hydraulic press; 81-Filter cylinder; 82-Filter base; 83-Filter slide; 84-Filter frame; 85-Filter worktable;

[0058] 9-Hydraulic station;

[0059] 10-Controller;

[0060] 11-Filter cloth folding and positioning mechanism;

[0061] 12-Flake crushing device;

[0062] 13-Sheet conveying device;

[0063] 14-Material dosing and mixing device;

[0064] 15-Material adding water and stirring device. Detailed Implementation

[0065] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the following detailed description, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of the spatial multi-layer ultra-high pressure box-type dehydration system and dehydration method proposed according to the present invention.

[0066] Example 1:

[0067] Please see Figure 1 , Figure 2 As shown, the spatial multi-layer ultra-high pressure box-type dewatering system of Embodiment 1 of the present invention mainly consists of a main frame 1, a material feeding device 2, a material feeding / unloading device 3, a filter cloth 4, a filter press 5, a filter press moving device 6, a filter press lifting hydraulic press 7, a filter press hydraulic press 8, a hydraulic station 9, and a controller 10.

[0068] The fabric feeding device 2, the fabric / unloading device 3, the filter chamber moving device 6, the filter chamber lifting hydraulic press 7, and the filter press hydraulic press 8 are connected and installed on the main frame 1.

[0069] The fabric feeding device 2 is a belt feeder 21, connected and installed above the fabric / unloading device 3; the fabric / unloading device 3 is connected and installed above the filter press chamber 5; the filter cloth 4 includes an upper filter cloth 41 and a lower filter cloth 42, respectively wound around the fabric / unloading device 3; the filter press chamber 5 is connected and installed on the filter chamber moving device 6; the filter chamber lifting hydraulic press 7 is connected and installed below the fabric / unloading device 3 and the filter chamber moving device 6; the filter chamber moving device 6, the filter chamber lifting hydraulic press 7, and the filter press hydraulic press 8 are respectively connected to the hydraulic station 9 through hydraulic oil pipes; the fabric feeding device 2, the fabric / unloading device 3, the filter chamber moving device 6, the filter chamber lifting hydraulic press 7, the filter press hydraulic press 8, and the hydraulic station 9 are electrically connected to the controller 10.

[0070] The filter press chamber 5 is mainly composed of an inner lining plate 51, a side wall plate 52, a transverse stiffener 53, a vertical stiffener 54, and a movable bottom plate 55. The side wall plate 52 consists of four pieces, which are welded together in pairs at the corners. The transverse stiffener 53 and the vertical stiffener 54 are welded to the outer side of the side wall plate 52 in the transverse and vertical directions, respectively. The inner lining plate 51 consists of four pieces, which are connected and fixed to the inner side of the side wall plate 52. The movable bottom plate 55 is installed inside the filter press chamber 5.

[0071] There is one filter chamber 5, which is installed on the filter chamber moving device 6 on the side of the filter press 8.

[0072] The filter press 8 mainly consists of a filter cylinder 81, a filter base 82, a filter slide 83, a filter frame 84, and a filter worktable 85. The filter base 82 is connected and installed on the main frame 1. There are two sets of filter frames 84, which are respectively connected between the filter base 82 and the filter worktable 85, with the filter worktable 85 located above the filter base 82. The filter cylinder 81 is connected and installed below the filter base 82 and the filter slide 83. The filter slide 83 is located between the filter base 82 and the filter worktable 85 and is connected to the piston rod of the filter cylinder 81. To further increase the operational stability of the filter press 8, a prestressed tie rod and a sliding guide column can also be connected and installed between the filter base 82 and the filter worktable 85.

[0073] The filter chamber moving device 6 includes a horizontal push-pull cylinder 61, moving rollers 62, and a moving track 63. The horizontal push-pull cylinder 61 is connected and installed between the filter chamber 5 and the main frame 1, wherein the base of the horizontal push-pull cylinder 61 is hinged to the main frame 1, and the piston rod is hinged to the filter chamber 5. There are four moving rollers 62, which are respectively connected and installed below the four corners of the filter chamber 5 by pins. The moving track 63 is connected and installed on the main frame 1 below the material feeding / unloading device 3, below the moving rollers 62, and above the filter press base 83 of the filter press hydraulic press 8. The moving rollers 62 are V-shaped rollers, and the moving track 63 is a V-shaped track.

[0074] Example 2:

[0075] Please see Figure 3 As shown, the spatial multi-layer ultra-high pressure box-type dehydration system of Embodiment 2 of the present invention is similar to that of Embodiment 1, except that:

[0076] The fabric feeding device 2 is a screw feeder 22.

[0077] To achieve simultaneous dewatering and material feeding / unloading, and to further improve the dewatering efficiency and throughput of the equipment, there are two filter chambers 5, which are installed in a straight line on the filter chamber moving devices 6 on both sides of the filter press 8.

[0078] To facilitate the positioning and traction of the filter cloth 4 when the feeding / unloading device 3 starts feeding, a filter chamber filter cloth fixing mechanism 56 is also provided; the filter chamber filter cloth fixing mechanism 56 is connected and installed on the movable base plate 55, and simultaneously fixes one end of the upper filter cloth 41 and the lower filter cloth 42 of the filter cloth 4 on the movable base plate 55.

[0079] Example 3:

[0080] Please see Figure 4, Figure 5 As shown, the spatial multi-layer ultra-high pressure box-type dehydration system of Embodiment 3 of the present invention is similar to that of Embodiment 1, except that:

[0081] There are three filter chambers 5, which are respectively installed on the filter chamber moving devices 6 on the three sides of the filter press hydraulic press 8.

[0082] To ensure the filter cloth 4 is folded more neatly when the cloth / unloading device 3 feeds the filter cloth 4 into the filter press chamber 5, thereby further improving the dewatering effect, a filter cloth folding and positioning mechanism 11 is added. Four filter cloth folding and positioning mechanisms 11 are installed, each connected to one of the four upper corners of the filter press chamber 5. Each filter cloth folding and positioning mechanism 11 is a finger cylinder. When the cloth / unloading device 3 lays one layer of filter cloth 4 on one side of the filter press chamber 5 and prepares to lay the next layer, the finger cylinder clamps both sides of the filter cloth 4 to prevent it from being pulled to the other side of the filter press chamber 5.

[0083] Example 4:

[0084] Please see Figure 6 As shown, the spatial multi-layer ultra-high pressure box-type dehydration system of Embodiment 4 of the present invention is similar to that of Embodiment 3, except that:

[0085] The fabric feeding device 2 is a screw pump feeder 23.

[0086] There are four filter chambers 5, which are respectively installed on the filter chamber moving devices 6 on the four sides of the filter press 8.

[0087] To better connect with downstream material handling equipment and improve the conveying stability of dehydrated materials, preventing material bridging and falling, a material crushing device 12 and a material conveying device 13 are added. The material crushing device 12 is connected to the rear end of the feeding / unloading device 3; the material conveying device 13 is connected to the rear end of the material crushing device 12. The material crushing device 12 is a twin-shaft spiral blade conveyor, or it can also be a twin-shaft shredder or a ratchet roller conveyor; the material conveying device 13 is a belt conveyor, or it can also be a scraper conveyor or a screw conveyor.

[0088] Example 5:

[0089] Please see Figure 7 As shown, the spatial multi-layer ultra-high pressure box-type dehydration system of Embodiment 5 of the present invention is similar to that of Embodiment 4, except that:

[0090] In order to make the filtered water flow smoother and prevent backflow, and improve the dewatering effect, the transverse stiffeners 53 around the filter chamber 5 are welded and installed downwards.

[0091] There are four filter cloth folding and positioning mechanisms 11, which are respectively connected and installed on the main frame 1 below the cloth / unloading device 3 and above the filter press chamber 5. Each filter cloth folding and positioning mechanism 11 consists of a telescopic cylinder and a positioning rod. The telescopic cylinder is connected and installed on the main frame 1, and the positioning rod is connected and installed on the piston rod of the telescopic cylinder. When the cloth / unloading device 3 lays a layer of filter cloth 4 on one side of the filter press chamber 5 and is preparing to lay the next layer, the telescopic cylinder extends the positioning rod to block both sides of the filter cloth 4, preventing the filter cloth 4 from being carried to the other side of the filter press chamber 5.

[0092] To further improve the dewatering effect and efficiency of filter press, as well as the stability of the fabric, a material dosing and stirring device 14 and a material water dosing and stirring device 15 are added; the material dosing and stirring device 14 and the material water dosing and stirring device 15 are respectively connected and installed at the front end of the fabric feeding device 2.

[0093] The spatial multi-layer ultra-high pressure box-type dehydration system and dehydration method of the present invention include the following steps:

[0094] Step S1 Start the equipment: Start the multi-layer ultra-high pressure box-type dewatering system through the controller 10, so that the feeding device 2, the feeding / unloading device 3, the filter chamber moving device 6, the filter chamber lifting hydraulic press 7, the filter press hydraulic press 8, and the hydraulic station 9 are in the start-up standby state, and the filter chamber moving device 6 moves the filter chamber 5 to the feeding / unloading position below the feeding / unloading device 3.

[0095] Step S2: Fabric feeding: The controller 10 controls the filter chamber lifting hydraulic press 7 to lift upwards, raising the movable bottom plate 55 of the filter chamber 5 to the upper opening of the filter chamber 5. The controller then controls the fabric feeding device 2 to transport the organic waste to be dewatered onto the lower filter cloth 42 on the fabric / unloading device 3. The fabric / unloading device 3 pulls the upper filter cloth 41 and the lower filter cloth 42, simultaneously conveying the dewatered material into the filter chamber 5. The filter cloth 4, after being folded, is neatly folded layer by layer onto the movable base plate 55 inside the filter press chamber 5. While the filter cloth 4 is folded into the filter press chamber 5, the filter chamber lifting hydraulic press 7 supports the movable base plate 55 and simultaneously performs a lowering action until the movable base plate 55 is lowered to the bottom of the filter press chamber 5. The filter cloth 4 is then spread to the upper port of the filter press chamber 5.

[0096] Step S3: Filter Press Dewatering: The controller 10 controls the filter chamber moving device 6 to push the filter chamber 5, after the material has been laid, from the material laying / unloading station of the material laying / unloading device 3 to the filter pressing station of the filter press hydraulic press 8. The controller 10 controls the filter press hydraulic press 8 to perform an upward lifting action. The filter pressing slide 83 of the filter press hydraulic press 8 lifts the movable base plate 55 of the filter chamber 5 upward. The movable base plate 55 supports the folded material layer in the filter chamber 5 to rise to abut against the filter pressing worktable 85 of the filter press hydraulic press 8. As the filter press hydraulic press 8 continues to perform the upward lifting action, the filter pressing slide 8... 3. The folded material layer in the filter press chamber 5 is continuously squeezed vertically upward. Under pressure, the water in the material flows through the filter cloth 4 between the two layers to the periphery of the filter press chamber 5 and is discharged through the drainage holes around the filter press chamber 5. When the set filtration time is reached, the filtration and dewatering are completed. The controller 10 controls the hydraulic station 9 to depressurize the filter press hydraulic press 8 and causes the filter press slide 83 to move downward. The movable bottom plate 55 of the filter press chamber 5 and the material fall down under the action of gravity until the filter press slide 83 of the filter press hydraulic press 8 completely exits the filter press chamber 5, and the movable bottom plate 55 returns to the bottom of the filter press chamber 5.

[0097] Step S4 Unloading: The controller 10 controls the filter chamber moving device 6 to pull the filter chamber 5 from the filter press position of the filter press hydraulic press 8 back to the material feeding / unloading position of the material feeding / unloading device 3. The controller 10 controls the filter chamber lifting hydraulic press 7 to move upward, lifting the movable bottom plate 55 and the material in the filter chamber 5 to the upper opening of the filter chamber 5. The controller 10 starts the material feeding / unloading device 3 to pull and recycle the filter cloth 4 along the reverse traction of the material, pulling the filter cloth 4 with the material pieces sandwiched in it out of the filter chamber 5 layer by layer and unloading the material pieces between the two layers of filter cloth 4. At the same time, the filter chamber lifting hydraulic press 7 supports the movable bottom plate 55 and moves upward synchronously until the movable bottom plate 55 rises to the upper opening of the filter chamber 5. The material feeding / unloading device 3 recycles all the filter cloth 4 and unloads the material pieces. The unloading of one filter press cycle is completed.

[0098] Step S5 Filter Chamber Reset: The controller 10 controls the filter chamber lifting hydraulic press 7 to perform a lowering action and the material feeding / unloading device 3 to move in the material feeding direction. The movable bottom plate 55 and the filter cloth 4 of the filter chamber 5 gradually descend back to the bottom of the filter chamber 5 to complete the reset. One material pressure filtration and dewatering cycle step is completed.

[0099] In a specific embodiment of the dewatering method of the spatial multi-layer ultra-high pressure box-type dewatering system of the present invention, a spatial multi-layer ultra-high pressure box-type dewatering system having one of the filter press chambers 5 is used to dewater cassava starch residue with an initial moisture content of 80%. The filter press hydraulic press 8 is set to a filter time of 10 minutes. The specific steps of the dewatering method are as follows:

[0100] Step S1 Start the equipment: Start the multi-layer ultra-high pressure box-type dewatering system through the controller 10, so that the screw feeder 22, the material feeding / unloading device 3, the filter chamber moving device 6, the filter chamber lifting hydraulic press 7, the filter press hydraulic press 8, and the hydraulic station 9 are in the start-up standby state, and the filter chamber moving device 6 moves the filter press 5 to the material feeding / unloading position below the material feeding / unloading device 3.

[0101] Step S2: Fabrication: The controller 10 controls the filter chamber lifting hydraulic press 7 to lift upwards, raising the movable bottom plate 55 of the filter chamber 5 to the upper opening of the filter chamber 5. The controller then controls the screw feeder 22 to transport the cassava starch residue to be dewatered onto the lower filter cloth 42 on the fabrication / unloading device 3. The fabrication / unloading device 3 pulls the upper filter cloth 41 and the lower filter cloth 42, simultaneously conveying the cassava starch residue into the filter chamber 5. At the same time, the fabrication / unloading device... 3. The filter cloth 4, after being folded, is neatly folded layer by layer onto the movable base plate 55 inside the filter press chamber 5. While the folding device 3 folds the filter cloth 4, which is covered with cassava starch residue, into the filter press chamber 5, the filter chamber lifting hydraulic press 7 supports the movable base plate 55 and simultaneously performs a lowering action until the movable base plate 55 is lowered to the bottom of the filter press chamber 5. The folding device 3 then covers the filter cloth 4, which is covered with cassava starch residue, to the upper end of the filter press chamber 5.

[0102] Step S3: Filter Press Dewatering: The controller 10 controls the filter chamber moving device 6 to push the filter chamber 5, after the cassava starch residue has been fed, from the feeding / unloading station of the feeding / unloading device 3 to the filter press station of the hydraulic press 8. The controller 10 controls the hydraulic press 8 to perform an upward lifting action. The filter press slide 83 of the hydraulic press 8 lifts the movable base plate 55 of the filter chamber 5 upward. The movable base plate 55 supports the folded cassava starch residue layer in the filter chamber 5, raising it to abut against the filter press worktable 85 of the hydraulic press 8. As the hydraulic press 8 continues to perform the upward lifting action, the filter press slide 83 continuously squeezes the folded cassava starch residue layer in the filter chamber 5 vertically upward. The controller 10 controls the hydraulic station 9 to gradually increase the pressure of the filter press 8, so that the pressure on the cassava starch residue layer reaches more than 2.5 MPa. Under the pressure, the water in the cassava starch residue flows through the filter cloth 4 between the two layers to the periphery of the filter chamber 5 and is discharged through the drainage holes around the filter chamber 5. When the set 10-minute filtration time is reached, the filtration and dewatering are completed. The controller 10 controls the hydraulic station 9 to depressurize the filter press 8 and cause the filter slide 83 to move downward. The movable bottom plate 55 of the filter chamber 5 and the dewatered cassava starch residue fall under the action of gravity until the filter slide 83 of the filter press 8 completely exits the filter chamber 5, and the movable bottom plate 55 returns to the bottom of the filter chamber 5.

[0103] Step S4 Unloading: The controller 10 controls the filter chamber moving device 6 to pull the filter chamber 5 from the filter press position of the filter press hydraulic press 8 back to the material feeding / unloading position of the material feeding / unloading device 3. The controller 10 controls the filter chamber lifting hydraulic press 7 to move upward, lifting the movable bottom plate 55 and the material in the filter chamber 5 to the upper opening of the filter chamber 5. The controller 10 starts the material feeding / unloading device 3 to traction and recycle the filter cloth in the opposite direction of the cloth. 4. The filter cloth 4 containing cassava starch residue is pulled out layer by layer from the filter press chamber 5 and the cassava starch residue is removed between the two layers of filter cloth 4. At the same time, the filter chamber lifting hydraulic press 7 supports the movable base plate 55 and moves upward in sync. When the movable base plate 55 is raised to the upper opening of the filter press chamber 5, the cloth / unloading device 3 recovers all the filter cloth 4 and unloads the cassava starch residue. The unloading of one cycle of cassava starch residue filter dewatering is completed.

[0104] Step S5 Filter Chamber Reset: The controller 10 controls the filter chamber lifting hydraulic press 7 to perform a lowering action and the material feeding / unloading device 3 to move in the material feeding direction. The movable bottom plate 55 and the filter cloth 4 of the filter chamber 5 gradually descend back to the bottom of the filter chamber 5 to complete the reset. One cassava starch residue filter dewatering step is completed.

[0105] Another specific embodiment of the dewatering method of the spatial multi-layer ultra-high pressure box-type dewatering system of the present invention for dewatering sugar filter mud by pressure filtration is similar to the previous embodiment, except that:

[0106] In step S3, there are two filter press chambers 5. One of the filter press chambers 5 completes the filter pressing of sugar filter mud and is pulled back to the feeding / unloading station of the feeding / unloading device 3 by the filter chamber moving device 6 for unloading. At the same time, the other filter press chamber 5 that has completed feeding is pushed by the filter chamber moving device 6 to the filter pressing station of the filter press hydraulic press 8 for filter pressing.

[0107] The spatial multi-layer ultra-high pressure box-type dehydration system and dehydration method provided by this invention have at least the following beneficial effects:

[0108] First, it can directly feed and dehydrate non-fluid organic waste with a moisture content of less than 85%, without the need to dilute the organic waste with water, thus not increasing the amount of wastewater, which is more in line with the policy guidance of "pollution reduction and volume reduction".

[0109] Secondly, it has higher dewatering efficiency. It can dewater common organic wastes such as municipal sludge and cassava starch residue with a moisture content of about 80% to less than 50% in each filter press cycle, which is more than 80% shorter than that of plate and frame filter press.

[0110] Third, before dewatering organic waste such as municipal sludge, the dosage of added chemicals such as polyferric chloride is less or even not added at all. After dewatering, the dry basis weight of the waste increases less or not at all, which is more conducive to the subsequent resource utilization of fertilizer.

[0111] Fourth, the filter cake of organic waste after dehydration is relatively thin, generally only 3 to 5 mm thick, compared with the 20 to 40 mm of plate and frame filter press. This makes subsequent fermentation, drying and crushing easier, resulting in better processing performance and lower processing costs.

[0112] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

[0113] Furthermore, while the operations are described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in sequential order. In certain circumstances, multitasking and parallel processing may be advantageous. Similarly, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the invention. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

[0114] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of the claims of the pending application of the present invention.

Claims

1. A spatial multi-layer ultra-high pressure box-type dehydration system, characterized in that, Includes main frame, material feeding device, material / unloading device, filter cloth, filter press chamber, filter chamber moving device, filter chamber lifting hydraulic press, filter press hydraulic press, hydraulic station and controller; The fabric feeding device, the fabric / unloading device, the filter chamber moving device, the filter chamber lifting hydraulic press, and the filter press hydraulic press are connected and installed on the main frame; The fabric feeding device is connected to the fabric / unloading device, and the fabric feeding device is installed above the fabric / unloading device; the fabric / unloading device is connected to the filter press chamber, and the fabric / unloading device is installed above the filter press chamber; the filter cloth includes an upper filter cloth and a lower filter cloth, which are respectively wound around the fabric / unloading device; the filter press chamber is connected and installed on the filter chamber moving device; the filter chamber lifting hydraulic press is connected and installed below the fabric / unloading device and the filter chamber moving device; the filter chamber moving device, the filter chamber lifting hydraulic press, and the filter press hydraulic press are respectively connected to the hydraulic station through hydraulic oil pipes; the fabric feeding device, the fabric / unloading device, the filter chamber moving device, the filter chamber lifting hydraulic press, the filter press hydraulic press, and the hydraulic station are electrically connected to the controller; The filter chamber moving device includes a horizontal push-pull hydraulic cylinder, moving rollers, and moving track; The push-pull hydraulic cylinder is connected and installed between the filter press chamber and the main frame; the movable roller is connected and installed below the filter press chamber; the movable track is connected and installed on the main frame below the material feeding / unloading device and the movable roller. The filter press has one to four chambers, which are respectively installed on the four lateral chamber moving devices of the filter press hydraulic press; the filter press includes an inner liner, side wall panels, transverse stiffeners, vertical stiffeners, and a movable bottom plate; there are four inner liner panels, which are respectively connected and fixed to the inner side of the side wall panels; there are four side wall panels, which are connected in pairs at the corners; the transverse stiffeners and the vertical stiffeners are respectively welded to the outer side of the side wall panels in the transverse and vertical directions; the movable bottom plate is installed inside the filter press. The filter press chamber is constructed by welding horizontal stiffening plates that slope downwards around its perimeter.

2. The spatial multi-layer ultra-high pressure box-type dehydration system according to claim 1, characterized in that, The filter press includes a filter cylinder, a filter base, a filter slide, a filter frame, and a filter worktable; The filter press cylinder is connected and installed below the filter press base and the filter press slide; the filter press base is connected and installed on the main frame; the filter press slide is located between the filter press base and the filter press workbench; the filter press frame is connected between the filter press base and the filter press workbench; the filter press workbench is located above the filter press base.

3. The spatial multi-layer ultra-high pressure box-type dehydration system according to claim 1, characterized in that, The fabric feeding device is at least one of a belt feeder, a screw feeder, or a screw pump feeder.

4. The spatial multi-layer ultra-high pressure box-type dehydration system according to claim 1, characterized in that, It also includes a filter cloth folding and positioning mechanism; The filter cloth folding and positioning mechanism is connected and installed on the main frame at the upper corner of the filter press chamber, below the filter chamber moving device, or above the filter press chamber.

5. The spatial multi-layer ultra-high pressure box-type dehydration system according to claim 1, characterized in that, It also includes a filter cloth fixing mechanism for the filter chamber; The filter cloth fixing mechanism of the filter chamber is connected and installed on the movable base plate.

6. The spatial multi-layer ultra-high pressure box-type dehydration system according to claim 1, characterized in that, It also includes a material crushing device and / or a material conveying device; The material crushing device is connected and installed at the rear end of the material feeding / unloading device; the material conveying device is connected and installed at the rear end of the material crushing device or / and the material feeding / unloading device; The material crushing device is a twin-shaft spiral blade conveyor, a twin-shaft shredder, or a ratchet roller mill; the material conveying device is a material belt conveyor, a material scraper conveyor, or a material spiral conveyor.

7. The spatial multi-layer ultra-high pressure box-type dehydration system according to claim 1, characterized in that, It also includes a material dosing and mixing device and / or a material water dosing and mixing device; The material dosing and mixing device and / or the material water dosing and mixing device are connected and installed at the front end of the fabric feeding device.

8. A dehydration method for a spatial multi-layer ultra-high pressure box-type dehydration system according to any one of claims 1 to 7, characterized in that, Includes the following steps: Step S1: Start the equipment: Start the multi-layer ultra-high pressure box-type dewatering system through the controller, so that the feeding device, the feeding / unloading device, the filter chamber moving device, the filter chamber lifting hydraulic press, the filter press hydraulic press, and the hydraulic station are in the start-up standby state, and the filter chamber moving device moves the filter chamber to the feeding / unloading station below the feeding / unloading device; Step S2: Material feeding: The controller controls the filter chamber lifting hydraulic press to lift the movable bottom plate of the filter chamber to the upper opening of the filter chamber. The controller also controls the material feeding device to transport the organic waste to be dewatered onto the lower filter cloth on the material feeding / unloading device. The material feeding / unloading device pulls the upper and lower filter cloths, which enclose the dewatered material, and simultaneously feeds them into the filter chamber. The material feeding / unloading device neatly folds the finished filter cloth layer by layer onto the movable bottom plate of the filter chamber. While folding the finished filter cloth into the filter chamber, the filter chamber lifting hydraulic press supports the movable bottom plate and simultaneously lowers the filter chamber until the movable bottom plate reaches the bottom of the filter chamber. The material feeding / unloading device then fills the upper opening of the filter chamber with the finished filter cloth. Step S3: Filter Press Dewatering: The controller controls the filter chamber moving device to push the filter chamber, after the material has been laid, from the material laying / unloading station to the filter press station of the hydraulic press. The controller controls the hydraulic press to perform an upward lifting action. The filter press slide of the hydraulic press lifts the movable bottom plate of the filter chamber upward. The movable bottom plate supports the folded material layer inside the filter chamber until it abuts against the filter press worktable. As the hydraulic press continues to perform the upward lifting action, the filter press slide continuously presses against the material. The folded material layer in the filter press chamber is squeezed vertically upwards. Under pressure, the water in the material flows through the filter cloth between the two layers to the periphery of the filter press chamber and is discharged through the drainage holes around the filter press chamber. When the set filtration time is reached, the filtration and dewatering are completed. The controller controls the hydraulic station to depressurize the filter press hydraulic press and causes the filter press slide to move downwards. The movable bottom plate of the filter press chamber and the material fall down under the action of gravity until the filter press slide completely exits the filter press chamber and the movable bottom plate returns to the bottom of the filter press chamber. Step S4 Unloading: The controller controls the filter chamber moving device to pull the filter chamber from the filter press station of the filter press hydraulic press back to the material feeding / unloading device's material feeding / unloading station. The controller controls the filter chamber lifting hydraulic press to move upward, lifting the movable bottom plate and material in the filter chamber to the upper opening of the filter chamber. The controller starts the material feeding / unloading device to pull and recycle the filter cloth along the reverse traction of the material, pulling the filter cloth with material fragments out of the filter chamber layer by layer and unloading the material fragments between the two layers of filter cloth. At the same time, the filter chamber lifting hydraulic press supports the movable bottom plate and moves upward synchronously until the movable bottom plate rises to the upper opening of the filter chamber. The material feeding / unloading device recycles all the filter cloth and unloads the material fragments, completing the unloading of one filter press cycle. Step S5 Filter Chamber Reset: The controller controls the filter chamber lifting hydraulic press to perform a lowering action and the material feeding / unloading device to push the filter cloth out. The movable bottom plate of the filter chamber and the filter cloth gradually descend back to the bottom of the filter chamber to complete the reset. One material pressure filtration and dewatering cycle is completed.

9. The dehydration method of the space multi-layer ultra-high pressure box-type dehydration system according to claim 8, characterized in that, In step S3, the hydraulic press for filter presses gradually increases the pressure so that the pressure on the material layer reaches more than 2.5 MPa and is continuously filtered for 10 to 60 minutes. In step S3, there are two or more filter press chambers. After one of the filter press chambers completes the filtration and is pulled back to the feeding / unloading station of the feeding / unloading device by the filter chamber moving device, the other filter press chamber that has completed feeding is simultaneously pushed by the filter chamber moving device to the filtration station of the filter press hydraulic press for filtration.

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