Spatial multi-layer ultrahigh-pressure box-type dehydration system

Abstract

The utility model discloses a spatial multilayer ultrahigh-pressure box-type dehydration system which comprises a main rack, a material distributing and feeding device, a material distributing / discharging device, filter cloth, a filter pressing chamber, a filter chamber moving device, a filter chamber lifting hydraulic machine, a filter pressing hydraulic machine, a hydraulic station and a controller, the material distributing and feeding device, the material distributing / discharging device, the filter chamber moving device, the filter chamber lifting hydraulic machine and the filter pressing hydraulic machine are connected to the main machine frame, the material distributing and feeding device is installed on the material distributing / discharging device, the material distributing / discharging device is installed on the filter pressing chamber, the filter cloth is wound on the material distributing / discharging device, the filter pressing chamber is installed on the filter chamber moving device, and the filter pressing hydraulic machine is installed on the filter chamber lifting hydraulic machine. The filter chamber lifting hydraulic machine is installed below the material distributing / discharging device and the filter chamber moving device, the filter chamber moving device, the filter chamber lifting hydraulic machine and the filter pressing hydraulic machine are connected with the hydraulic station, and the material distributing and feeding device, the material distributing / discharging device, the filter chamber moving device, the filter chamber lifting hydraulic machine, the filter pressing hydraulic machine and the hydraulic station are electrically connected with the controller.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical and physical dehydration of organic waste, and in particular relates to a spatial multi-layer ultra-high pressure box-type dehydration system. Background Art

[0002] Most organic waste generated in daily life has a moisture content exceeding 70% to 80%. To ensure environmentally friendly waste management and resource utilization, turning waste into treasure and using it for practical purposes, dehydrating organic waste to minimize its moisture content is crucial. Mechanical dehydration is one of the most commonly used and fastest dehydration technologies. Commonly used mechanical equipment for organic waste dehydration includes belt filter presses, plate and frame filter presses, screw presses, centrifuges, and vacuum filters. Because they can dehydrate most high-moisture organic waste to a moisture content of 60%, and even some to below 50%, plate and frame filter presses are increasingly used in the dehydration of organic wastes such as municipal sludge, cassava starch residue, and sugar filter mud.

[0003] However, with the new demands for lower moisture content, lower dehydration costs, and greater waste reduction, the use of plate and frame filter presses for dehydrating organic waste has not yet fully met these needs. This is primarily due to the following issues: First, non-fluid organic waste with a moisture content below 85% cannot be directly dehydrated. Instead, water must be added to the organic waste to dilute it to a fluid content of 90% or even above 95% before it can be pumped for dehydration, resulting in an increased amount of wastewater. Second, the dehydration efficiency is low, with a single dehydration cycle often requiring 4 to 6 hours. Third, before dehydrating organic waste such as municipal sludge, more chemicals such as polyferric chloride must be added and stirred, increasing the dry weight of the waste and treatment costs, significantly increasing the iron content of the sludge and hindering its resource utilization as fertilizer. Fourth, the organic waste cannot be dehydrated to a moisture content below 50% or even 40% in a short and efficient manner, resulting in high costs for subsequent environmental protection treatment and resource utilization. Fifth, the filter cake is thick, making subsequent fermentation, drying, and crushing extremely difficult, increasing treatment costs.

[0004] Therefore, it is very necessary and meaningful to develop organic waste dehydration equipment that can overcome the technical deficiencies of the above-mentioned plate and frame filter press dehydrators, and have higher dehydration efficiency, lower cost, and better pollution and carbon reduction. Utility Model Content

[0005] The purpose of this utility model is to provide a spatial multi-layer ultra-high pressure box-type dehydration system to solve the current technical problems of higher efficiency and lower cost dehydration in the environmental protection management and resource utilization of high-water content organic waste, and to provide technical support for the continuous improvement of the level of environmental protection management and resource utilization of organic waste.

[0006] The purpose of the present invention and the technical problem it solves are achieved by adopting the following technical solutions. According to the present invention, a spatial multi-layer ultra-high pressure box-type dehydration system is proposed, which includes a main frame, a material distribution feeding device, a material distribution / discharging device, a filter cloth, a filter press chamber, a filter chamber moving device, a filter chamber lifting hydraulic press, a filter press hydraulic press, a hydraulic station and a controller;

[0007] The material distribution and feeding device, the material distribution / discharging 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 material distribution and feeding device is connected to the material distribution / discharging device, and the material distribution and feeding device is installed above the material distribution / discharging device; the material distribution / discharging device is connected to the filter press chamber, and the material distribution / discharging 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 material distribution / discharging 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 material distribution / discharging 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 material distribution and feeding device, the material distribution / discharging 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 hydraulic press comprises a filter press oil cylinder, a filter press base, a filter press slide, a filter press frame and a filter press workbench;

[0010] The filter press oil 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 cylinder, a moving roller and a moving track;

[0012] The push-pull oil 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 distribution / unloading device, below the movable roller and above the filter press base.

[0013] The purpose of the present invention and the solution to its technical problems can be further achieved by adopting the following technical measures.

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

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

[0016] In one embodiment of the present invention, the aforementioned spatial multi-layer ultra-high pressure box-type dehydration system, wherein the filter press chamber includes an inner lining plate, a side wall plate, a transverse rib plate, a vertical rib plate and a movable bottom plate;

[0017] There are four inner lining plates, which are respectively connected and fixed on the inner sides of the side wall plates; there are four side wall plates, which are connected in pairs at the corners; the transverse ribs and the vertical ribs are respectively welded transversely and vertically on the outer sides of the side wall plates; 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 dehydration system further includes a filter cloth folding and positioning mechanism;

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

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

[0021] In one embodiment of the present invention, in the aforementioned spatial multi-layer ultra-high pressure box-type dehydration system, the transverse ribs around the filter press chamber are welded and installed in a downward slant.

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

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

[0024] Wherein, the sheet crushing device is a double-shaft spiral blade conveyor or a double-shaft shredder, or a ratchet roller-to-roller machine; the sheet conveying device is a sheet belt conveyor or a sheet scraper conveyor, or a sheet 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 adding and stirring device and / or a material adding and stirring device;

[0026] The material adding and stirring device and / or the material adding and stirring device are connected and installed at the front end of the material distributing and feeding device.

[0027] Compared with the existing technology, the present invention has obvious advantages and beneficial effects. By means of the above technical solution, the present invention has at least one of the following advantages and beneficial effects:

[0028] 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 and without increasing the amount of wastewater.

[0029] Second, the dehydration efficiency is higher. It can dehydrate common organic wastes such as municipal sludge and cassava starch residue with a moisture content of about 80% to less than 50%. Each filter press cycle only takes 10 to 60 minutes, which is more than 80% shorter than that of the plate and frame filter press.

[0030] Third, before dehydrating municipal sludge and other organic waste, the amount of chemicals such as polyferric chloride added is less, or even not added at all. After dehydration, the dry basis volume of the waste increases little, or does not increase at all, which is more conducive to the subsequent fertilizer resource utilization;

[0031] Fourth, the filter cake of organic waste after dehydration is thinner, generally only 3 to 5 mm thick, compared with the 20 to 40 mm of the plate and frame filter press. Subsequent fermentation, drying and crushing are easier, the processing performance is better, and the processing cost is lower.

[0032] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In addition, in order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 This is a schematic diagram of the main structure of the first embodiment of the present invention;

[0035] Figure 2This is a main cross-sectional view of the filter press chamber of Example 1 of the present utility model;

[0036] Figure 3 This is a schematic front view of the structure of the second embodiment of the present utility model;

[0037] Figure 4 This is a schematic diagram of the main structure of the third embodiment of the present invention;

[0038] Figure 5 This is a schematic top view of the structure of the third embodiment of the present invention;

[0039] Figure 6 It is a schematic top view of the structure of the fourth embodiment of the present utility model;

[0040] Figure 7 This is a schematic front view of the structure of the fifth embodiment of the present invention;

[0041] Reference numerals:

[0042] 1- Main frame;

[0043] 2- material feeding device; 21- belt feeder; 22- screw feeder; 23- screw pump feeder

[0044] 3- Material distribution / unloading device;

[0045] 4-filter cloth; 41-upper filter cloth; 42-lower filter cloth;

[0046] 5- filter press chamber; 51- lining plate; 52- side wall plate; 53- transverse rib plate; 54- vertical rib plate; 55- movable bottom plate; 56- filter chamber filter cloth fixing mechanism;

[0047] 6- filter chamber moving device; 61- push and pull cylinder; 62- moving roller; 63- moving track;

[0048] 7-Filter chamber lifting hydraulic press;

[0049] 8-filter press hydraulic press; 81-filter press oil cylinder; 82-filter press base; 83-filter press slide; 84-filter press frame; 85-filter press workbench;

[0050] 9-Hydraulic station;

[0051] 10-Controller;

[0052] 11- filter cloth folding and positioning mechanism;

[0053] 12-Flake crushing device;

[0054] 13-sheet conveying device;

[0055] 14-Material dosing and stirring device;

[0056] 15-Material water adding and stirring device. DETAILED DESCRIPTION

[0057] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following, in combination with the accompanying drawings and preferred embodiments, describes in detail the specific implementation method, structure, characteristics and effects of the spatial multi-layer ultra-high pressure box-type dehydration system and dehydration method proposed by the present invention.

[0058] Example 1:

[0059] See also Figure 1 、 Figure 2 As shown, the spatial multi-layer ultra-high pressure box-type dehydration system of the first embodiment of the present invention is mainly composed of a main frame 1, a material distribution and feeding device 2, a material distribution / discharging device 3, a filter cloth 4, a filter press chamber 5, a filter chamber moving device 6, a filter chamber lifting hydraulic press 7, a filter press hydraulic press 8, a hydraulic station 9 and a controller 10;

[0060] The material distribution and feeding device 2, the material distribution / discharging device 3, the filter chamber moving device 6, the filter chamber lifting hydraulic machine 7, and the filter press hydraulic machine 8 are connected and installed on the main frame 1;

[0061] The material distribution and feeding device 2 is a belt feeder 21, which is connected and installed above the material distribution / discharging device 3; the material distribution / discharging 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, which are respectively wound on the material distribution / discharging device 3; the filter press chamber 5 is connected and installed on the filter chamber moving device 6; the filter chamber lifting hydraulic machine 7 is connected and installed below the material distribution / discharging device 3 and the filter chamber moving device 6; the filter chamber moving device 6, the filter chamber lifting hydraulic machine 7, and the filter press hydraulic machine 8 are respectively connected to the hydraulic station 9 through hydraulic oil pipes; the material distribution and feeding device 2, the material distribution / discharging device 3, the filter chamber moving device 6, the filter chamber lifting hydraulic machine 7, the filter press hydraulic machine 8, and the hydraulic station 9 are electrically connected to the controller 10.

[0062] The filter press chamber 5 is mainly composed of an inner lining plate 51, a side wall plate 52, a horizontal rib plate 53, a vertical rib plate 54 and a movable bottom plate 55; the side wall plate 52 has four pieces, and two of them are welded together at the corners; the horizontal rib plate 53 and the vertical rib plate 54 are welded horizontally and vertically on the outside of the side wall plate 52 respectively; the inner lining plate 51 has four pieces, and they are respectively connected and fixed on the inner side of the side wall plate 52; the movable bottom plate 55 is installed in the filter press chamber 5.

[0063] The filter press chamber 5 has one filter press chamber 5 installed on the filter chamber moving device 6 on the side of the filter press hydraulic press 8.

[0064] The filter press hydraulic press 8 primarily consists of a filter press cylinder 81, a filter press base 82, a filter press slide 83, a filter press frame 84, and a filter press workbench 85. The filter press base 82 is connected and mounted on the main frame 1. Two sets of filter press frames 84 are connected between the filter press base 82 and the filter press workbench 85, with the filter press workbench 85 located above the filter press base 82. The filter press cylinder 81 is connected and mounted below the filter press base 82 and the filter press slide 83. The filter press slide 83 is located between the filter press base 82 and the filter press workbench 85 and is connected to the piston rod of the filter press cylinder 81. To further enhance the operational stability of the filter press hydraulic press 8, prestressed tie rods and sliding guide posts may also be connected and mounted between the filter press base 82 and the filter press workbench 85.

[0065] 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 press chamber 5 and the main frame 1, with the base of the horizontal push cylinder 61 hingedly mounted on the main frame 1 and the piston rod hingedly mounted on the filter press chamber 5. There are four moving rollers 62, which are respectively installed below the four corners of the filter press chamber 5 via pins. The moving track 63 is connected and installed on the main frame 1 above the filter press base 83 of the filter press hydraulic press 8, below the material distribution / discharging device 3, 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.

[0066] Example 2:

[0067] See also Figure 3 As shown, the spatial multi-layer ultra-high pressure box-type dehydration system of the second embodiment of the present invention is similar to the first embodiment, with the only difference being:

[0068] The material feeding device 2 is a screw feeder 22 .

[0069] In order to achieve simultaneous filter press dehydration and material distribution / unloading, and further improve the dehydration efficiency and processing capacity of the equipment, there are two filter press chambers 5, which are installed in a straight line on the filter chamber moving device 6 on both sides of the filter press hydraulic press 8.

[0070] In order to facilitate the positioning and pulling of the filter cloth 4 when the material distributing / discharging device 3 starts distributing the material, 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 bottom plate 55, and one end of the upper filter cloth 41 and the lower filter cloth 42 of the filter cloth 4 are simultaneously fixed on the movable bottom plate 55.

[0071] Example 3:

[0072] See also Figure 4 、 Figure 5 As shown, the spatial multi-layer ultra-high pressure box-type dehydration system of the third embodiment of the present invention is similar to the first embodiment, with the only difference being:

[0073] There are three filter press chambers 5, which are respectively installed on the filter chamber moving devices 6 on three sides of the filter press hydraulic machine 8.

[0074] To ensure that the filter cloth 4 is folded more neatly when the distributing / discharging device 3 distributes the filter cloth 4 to the filter press chamber 5, thereby further improving the filter press dewatering effect, a filter cloth folding and positioning mechanism 11 is additionally provided. Four filter cloth folding and positioning mechanisms 11 are connected and installed at the four upper corners of the filter press chamber 5. Each filter cloth folding and positioning mechanism 11 is a finger cylinder. When the distributing / discharging device 3 lays a layer of filter cloth 4 on one side of the filter press chamber 5 and prepares to switch to lay the next layer, the finger cylinder operates to clamp the two sides of the filter cloth 4 to prevent the filter cloth 4 from being carried to the other side of the filter press chamber 5.

[0075] Example 4:

[0076] See also Figure 6 As shown, the spatial multi-layer ultra-high pressure box-type dehydration system of the fourth embodiment of the present invention is similar to the third embodiment, with the only difference being:

[0077] The material feeding device 2 is a screw pump feeder 23 .

[0078] There are four filter press chambers 5 , which are respectively installed on the filter chamber moving devices 6 on the four sides of the filter press hydraulic machine 8 .

[0079] To better connect with the rear-end material processing equipment and improve the conveying stability of the dehydrated material, thereby preventing it from arching or falling, a web crushing device 12 and a web conveying device 13 are additionally provided. The web crushing device 12 is connected to the rear end of the material distributing / discharging device 3; the web conveying device 13 is connected to the rear end of the web crushing device 12. The web crushing device 12 is a double-shaft spiral blade conveyor, but can also be a double-shaft shredder or a ratchet roller conveyor. The web conveying device 13 is a belt conveyor, but can also be a scraper conveyor or a screw conveyor.

[0080] Embodiment 5:

[0081] See also Figure 7 As shown, the spatial multi-layer ultra-high pressure box-type dehydration system of the fifth embodiment of the present invention is similar to the fourth embodiment, with the only difference being:

[0082] In order to make the filter press water flow more smoothly and avoid backflow, thereby improving the filter press dehydration effect, the transverse ribs 53 around the filter press chamber 5 are welded and installed in a downward tilt.

[0083] There are four filter cloth folding and positioning mechanisms 11, each connected and mounted on the main frame 1 below the distributing / discharging device 3 and above the filter press chamber 5. The filter cloth folding and positioning mechanism 11 consists of a telescopic cylinder and a positioning rod. The telescopic cylinder is connected and mounted on the main frame 1, and the positioning rod is connected and mounted on the piston rod of the telescopic cylinder. When the distributing / discharging device 3 lays a layer of filter cloth 4 on one side of the filter press chamber 5 and prepares to switch 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.

[0084] In order to further improve the filter press dehydration effect and efficiency, as well as improve the stability of the cloth, a material dosing and stirring device 14 and a material water adding and stirring device 15 are additionally provided; the material dosing and stirring device 14 and the material water adding and stirring device 15 are respectively connected and installed at the front end of the cloth feeding device 2.

[0085] The dehydration method of the spatial multi-layer ultra-high pressure box-type dehydration system of the utility model comprises the following steps:

[0086] Step S1: Start the equipment: Start the spatial multi-layer ultra-high pressure box-type dehydration system through the controller 10, so that the material distribution and feeding device 2, the material distribution / unloading device 3, the filter chamber moving device 6, the filter chamber lifting hydraulic machine 7, the filter press hydraulic machine 8, and the hydraulic station 9 are in the start-up standby state, and the filter chamber moving device 6 moves the filter press chamber 5 to the material distribution / unloading station below the material distribution / unloading device 3.

[0087] Step S2: The controller 10 controls the filter chamber lifting hydraulic machine 7 to lift the movable bottom plate 55 of the filter press chamber 5 upward to the upper opening of the filter press chamber 5, and controls the material feeding device 2 to transport the organic waste to be dehydrated to the lower filter cloth 42 on the material distributing / discharging device 3. The material distributing / discharging device 3 pulls the upper filter cloth 41 and the lower filter cloth 42 to sandwich the dehydrated material and transport them to the filter press chamber 5 synchronously. The finished filter cloth 4 is neatly folded layer by layer onto the movable bottom plate 55 in the filter press chamber 5. The distributing / unloading device 3 folds the finished filter cloth 5 into the filter press chamber 5, and the filter chamber lifting hydraulic machine 7 supports the movable bottom plate 55 while synchronously descending. When the movable bottom plate 55 descends to the bottom of the filter press chamber 5, the distributing / unloading device 3 spreads the finished filter cloth 4 to the upper port of the filter press chamber 5.

[0088] Step S3: Filter pressing and dehydration: the controller 10 controls the filter chamber moving device 6 to push the filter press chamber 5 that has completed material distribution from the material distribution / discharging station of the material distribution / discharging device 3 to the filter press 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 press slide 83 of the filter press hydraulic press 8 lifts the movable bottom plate 55 of the filter press chamber 5 upward. The movable bottom plate 55 supports the folded material layer in the filter press chamber 5 to rise against the filter press workbench 85 of the filter press hydraulic press 8. As the filter press hydraulic press 8 continues to perform an upward lifting action, the filter press slide 83 of the filter press hydraulic press 8 lifts the movable bottom plate 55 of the filter press chamber 5 upward. The movable bottom plate 55 supports the folded material layer in the filter press chamber 5 to rise to the filter press workbench 85 against the filter press hydraulic press 8. As the filter press hydraulic press 8 continues to perform an upward lifting action, the filter press slide 83 3 continuously presses the folded material layer in the filter press chamber 5 vertically upward. Under the action of pressure, the moisture 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 filter pressing time is reached, the filter pressing dehydration is completed. The controller 10 controls the hydraulic station 9 to relieve the pressure on 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 descend accordingly under the action of gravity. When the filter press slide 83 of the filter press hydraulic press 8 completely exits the filter press chamber 5, the movable bottom plate 55 descends back to the bottom of the filter press chamber 5.

[0089] Step S4 unloading: the controller 10 controls the filter chamber moving device 6 to pull the filter press chamber 5 from the filter pressing station of the filter press hydraulic press 8 back to the distributing / unloading station of the distributing / unloading device 3, and the controller 10 controls the filter chamber lifting hydraulic press 7 to move upward to lift the movable bottom plate 55 and the material in the filter press chamber 5 upward to the upper opening of the filter press chamber 5, and the controller 10 starts the distributing / unloading device 3 to recycle the filter cloth 4 along the reverse traction and winding of the cloth, and pulls the filter cloth 4 with the material sheet out of the filter press chamber 5 layer by layer and unloads the material sheet from between the two layers of the filter cloth 4. At the same time, the filter chamber lifting hydraulic press 7 supports the movable bottom plate 55 while performing an upward movement synchronously, until the movable bottom plate 55 rises to the upper opening of the filter press chamber 5, the distributing / unloading device 3 recovers all the filter cloth 4 and unloads the material sheet therein, and the unloading of one filter pressing round is completed.

[0090] Step S5: Filter chamber reset: The controller 10 controls the filter chamber lifting hydraulic machine 7 to descend and the material distribution / discharging device 3 to move in the distribution direction. The movable bottom plate 55 of the filter press chamber 5 and the filter cloth 4 gradually descend back to the bottom of the filter press chamber 5 to complete the reset, and a material filtration and dehydration cycle step is completed.

[0091] In a specific embodiment of the dehydration method of the spatial multi-layer ultra-high pressure box-type dehydration system of the utility model, a spatial multi-layer ultra-high pressure box-type dehydration system having one filter press chamber 5 is used to dehydrate cassava starch residue with an initial moisture content of 80%. The filtration time of the filter press hydraulic press 8 is set to 10 minutes. The specific steps of the dehydration method are as follows:

[0092] Step S1 starts the equipment: the spatial multi-layer ultra-high pressure box-type dehydration system is started by the controller 10, so that the screw feeder 22, the material distribution / 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 chamber 5 to the material distribution / unloading station below the material distribution / unloading device 3.

[0093] Step S2: The controller 10 controls the filter chamber lifting hydraulic press 7 to lift the movable bottom plate 55 of the filter press chamber 5 upward to the upper opening of the filter press chamber 5, and controls the screw feeder 22 to convey the cassava starch residue to be dehydrated to the lower filter cloth 42 on the distributing / discharging device 3. The distributing / discharging device 3 pulls the upper filter cloth 41 and the lower filter cloth 42 to convey the cassava starch residue to the filter press chamber 5 synchronously. The filter cloth 4 with the finished cloth is neatly folded layer by layer onto the movable bottom plate 55 in the filter press chamber 5. The cloth distributing / unloading device 3 folds the filter cloth 4 with the finished cloth of cassava starch residue into the filter press chamber 5 while the filter chamber lifting hydraulic machine 7 supports the movable bottom plate 55 while synchronously lowering it until the movable bottom plate 55 is lowered to the bottom of the filter press chamber 5. The cloth distributing / unloading device 3 spreads the filter cloth 4 with the finished cloth of cassava starch residue to the upper port of the filter press chamber 5.

[0094] Step S3: filtration and dehydration: the controller 10 controls the filter chamber moving device 6 to push the filter press chamber 5 that has completed the cassava starch residue distribution from the distribution / discharging station of the distribution / discharging device 3 to the filtration 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 press slide 83 of the filter press hydraulic press 8 lifts the movable bottom plate 55 of the filter press chamber 5 upward. The movable bottom plate 55 supports the folded cassava starch residue layer in the filter press chamber 5 to rise against the filter press workbench 85 of the filter press hydraulic press 8. As the filter press hydraulic press 8 continues to perform an upward lifting action, the filter press slide 83 continues to vertically squeeze the folded cassava starch residue layer in the filter press chamber 5 upward, and the filter press hydraulic press 8 continues to perform an upward lifting action. The controller 10 controls the hydraulic station 9 to gradually increase the pressure of the filter press hydraulic press 8 so that the pressure on the cassava starch residue layer reaches more than 2.5 MPa. Under the action of pressure, the moisture in the cassava starch residue 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 10-minute filtration time is reached, the filtration dehydration is completed. The controller 10 controls the hydraulic station 9 to relieve the pressure on the filter press hydraulic press 8 and make the filter press slide 83 move downward. The movable bottom plate 55 of the filter press chamber 5 and the dehydrated cassava starch residue descend 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 drops back to the bottom of the filter press chamber 5.

[0095] Step S4: Unloading: The controller 10 controls the filter chamber moving device 6 to pull the filter press chamber 5 from the filter press station of the filter press hydraulic press 8 back to the feeding / unloading station of the feeding / unloading device 3. The controller 10 controls the filter chamber lifting hydraulic press 7 to move upward to lift the movable bottom plate 55 and the material in the filter press chamber 5 upward to the upper opening of the filter press chamber 5. The controller 10 starts the feeding / unloading device 3 to recycle the filter cloth along the reverse direction of the cloth. 4. Pull the filter cloth 4 carrying the cassava starch residue pieces out of the filter press chamber 5 layer by layer and remove the cassava starch residue pieces from between the two layers of the filter cloth 4. At the same time, the filter chamber lifting hydraulic machine 7 supports the movable bottom plate 55 while performing a synchronous upward movement. When the movable bottom plate 55 rises 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 pieces therein. The unloading of one cassava starch residue filter press dehydration round is completed.

[0096] Step S5: filter chamber reset: the controller 10 controls the filter chamber lifting hydraulic machine 7 to descend and the material distribution / discharging device 3 to move in the distribution direction, and the movable bottom plate 55 of the filter press chamber 5 and the filter cloth 4 gradually descend back to the bottom of the filter press chamber 5 to complete the reset, and one cassava starch residue filter pressing and dehydration step is completed.

[0097] Another specific embodiment of the dehydration method of the spatial multi-layer ultra-high pressure box-type dehydration system of the present invention is to perform filter pressing and dehydration of sugar filter mud. The specific embodiment is similar to the previous embodiment, and the only difference is that:

[0098] There are two filter press chambers 5 in step S3. One of the filter press chambers 5 is pulled back to the feeding / unloading station of the feeding / unloading device 3 by the filter chamber moving device 6 for unloading after completing the sugar filter mud filtration. At the same time, the other filter press chamber 5 that has completed the feeding is pushed to the filtration station of the filter press hydraulic press 8 by the filter chamber moving device 6 for filtration.

[0099] The spatial multi-layer ultra-high pressure box-type dehydration system and dehydration method provided by the utility model have at least the following beneficial effects:

[0100] 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 and without increasing the amount of wastewater.

[0101] Second, the dehydration efficiency is higher. It can dehydrate common organic wastes such as municipal sludge and cassava starch residue with a moisture content of about 80% to less than 50%. Each filter press cycle only takes 10 to 60 minutes, which is more than 80% shorter than that of the plate and frame filter press.

[0102] Third, before dehydrating municipal sludge and other organic waste, the amount of chemicals such as polyferric chloride added is less, or even not added at all. After dehydration, the dry basis volume of the waste increases little, or does not increase at all, which is more conducive to the subsequent fertilizer resource utilization;

[0103] Fourth, the filter cake of organic waste after dehydration is thinner, generally only 3 to 5 mm thick, compared with the 20 to 40 mm of the plate and frame filter press. Subsequent fermentation, drying and crushing are easier, the processing performance is better, and the processing cost is lower.

[0104] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

[0105] In addition, although each operation is described in a specific order, this should not be understood as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details have been included in the above discussion, these should not be interpreted as limiting the scope of the present invention. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination.

[0106] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be encompassed by the scope of the pending claims of the present invention.

Claims

1. A spatial multi-layer ultra-high pressure box-type dehydration system, characterized in that: It includes main frame, material feeding device, material distributing / discharging device, filter cloth, filter press chamber, filter chamber moving device, filter chamber lifting hydraulic press, filter press hydraulic press, hydraulic station and controller; The material distribution and feeding device, the material distribution / discharging 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 material distribution and feeding device is connected to the material distribution / unloading device, and the material distribution and feeding device is installed above the material distribution / unloading device; the material distribution / unloading device is connected to the filter press chamber, and the material distribution / 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 material distribution / 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 material distribution / 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 material distribution and feeding device, the material distribution / 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.

2. The spatial multi-layer ultra-high pressure box-type dehydration system according to claim 1 is characterized in that: The filter press hydraulic press comprises a filter press oil cylinder, a filter press base, a filter press slide, a filter press frame and a filter press workbench; The filter press oil 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 2 is characterized in that: The filter chamber moving device includes a push-pull oil cylinder, a moving roller and a moving track; The push-pull oil 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 distribution / unloading device, below the movable roller and above the filter press base.

4. The spatial multi-layer ultra-high pressure box-type dehydration system according to claim 1 is characterized in that: There are one to four filter press chambers, which are respectively installed on the filter chamber moving devices on the four sides of the filter press hydraulic press.

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

6. The spatial multi-layer ultra-high pressure box-type dehydration system according to claim 1 is characterized in that: The filter press chamber includes an inner lining plate, a side wall plate, a transverse rib plate, a vertical rib plate and a movable bottom plate; There are four inner lining plates, which are respectively connected and fixed on the inner sides of the side wall plates; there are four side wall plates, which are connected in pairs at the corners; the transverse ribs and the vertical ribs are respectively welded transversely and vertically on the outer sides of the side wall plates; the movable bottom plate is installed in the filter press chamber.

7. The spatial multi-layer ultra-high pressure box-type dehydration system according to claim 1 is 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 upper corner of the filter press chamber or below the filter chamber moving device or on the main frame above the filter press chamber.

8. The spatial multi-layer ultra-high pressure box-type dehydration system according to claim 6, characterized in that: It also includes a filter chamber filter cloth fixing mechanism; The filter chamber filter cloth fixing mechanism is connected and installed on the movable bottom plate.

9. The spatial multi-layer ultra-high pressure box-type dehydration system according to claim 1, characterized in that: The transverse ribs around the filter press chamber are welded and installed in a downward tilt.

10. The spatial multi-layer ultra-high pressure box-type dehydration system according to claim 1, characterized in that: It also includes a sheet crushing device and / or a sheet conveying device; The sheet crushing device is connected and installed at the rear end of the material distribution / discharging device; the sheet conveying device is connected and installed at the rear end of the sheet crushing device or / and the material distribution / discharging device; Wherein, the sheet crushing device is a double-shaft spiral blade conveyor, a double-shaft shredder or a ratchet roller machine; the sheet conveying device is a sheet belt conveyor, a sheet scraper conveyor or a sheet spiral conveyor.

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

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