Spatial multilayer ultrahigh pressure box type dehydration system and dehydration method

Abstract

The invention discloses a spatial multilayer ultrahigh-pressure box-type dehydration system and a dehydration method. The system 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 invention 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 and a dehydration method. Background Art

[0002] Most of the various organic wastes generated in social production and life have a moisture content of more than 70% to 80%. To carry out environmental management of organic wastes and to utilize them as resources, "turning waste into treasure and turning waste into use", dehydrating organic wastes and reducing their moisture content as much as possible is the key. One of the commonly used dehydration techniques and the fastest dehydration technique is mechanical dehydration. Common mechanical equipment used for dehydration of organic wastes includes belt filter presses, plate and frame filter presses, screw presses, centrifuges, vacuum filters, etc. Since most organic wastes with high moisture content can be dehydrated to 60% moisture, and even some can be dehydrated to less than 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, under the new demand for lower moisture content, lower dehydration cost and higher waste reduction, the use of plate and frame filter press to dehydrate organic waste cannot meet the above needs well, which is mainly reflected in the following aspects: First, non-fluid organic waste with a moisture content of less than 85% cannot be directly fed for dehydration. Instead, water must be added to the organic waste first to dilute the organic waste to a fluid with a moisture content of 90% or even more than 95% before it can be pumped for dehydration, which results in an increase in the amount of wastewater, which does not meet the policy-oriented demand of "pollution reduction and volume reduction"; second, dehydration The efficiency is low, and one dehydration cycle often takes 4 to 6 hours; third, before dehydrating organic waste such as municipal sludge, it is necessary to add and stir more agents such as polyferric chloride, which increases the dry basis volume of the waste and the processing cost, and significantly increases the iron content in the sludge, which is not conducive to the resource utilization of fertilizers; fourth, it is impossible to dehydrate organic waste to 50% or even below 40% moisture in a short time and with high efficiency, and the subsequent environmental protection treatment and resource utilization costs are high; fifth, the filter cake is thick, which makes subsequent fermentation, drying and crushing extremely difficult, and increases the processing cost.

[0004] Therefore, in the context of the whole society advocating resource recycling, better assisting in "pollution reduction and carbon reduction" and realizing the "dual carbon" goals as soon as possible, it is very necessary and meaningful to innovatively develop organic waste dehydration equipment that can overcome the technical deficiencies of the above-mentioned plate and frame filter press dehydrator, with higher dehydration efficiency, lower cost, and more "pollution reduction and carbon reduction". Summary of the invention

[0005] The purpose of the present invention is to provide a spatial multi-layer ultra-high pressure box-type dehydration system and a dehydration method 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 solved are achieved by adopting the following technical solutions. A spatial multi-layer ultra-high pressure box-type dehydration system proposed in the present invention 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 with the material distribution and unloading device, and the material distribution and feeding device is installed above the material distribution and unloading device; the material distribution and unloading device is connected with the filter press chamber, and the material distribution and unloading device is installed above the filter press chamber; the filter cloth comprises an upper filter cloth and a lower filter cloth, which are respectively wound on the material distribution and 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 and 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 with the hydraulic station through hydraulic oil pipes; the material distribution and feeding device, the material distribution and 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 with 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 / discharging device, 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 or 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 comprises an inner lining plate, a side wall plate, a transverse rib plate, a vertical rib plate and a movable bottom plate;

[0017] The inner lining plates are four in number and are respectively connected and fixed to the inner side of the side wall plates; the side wall plates are four in number and are connected in pairs at the corners; the transverse rib plates and the vertical rib plates are respectively welded transversely and vertically to the outer side 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 slanting manner.

[0022] In one embodiment of the present invention, the aforementioned spatial multi-layer ultra-high pressure box-type dehydration system further includes a material sheet crushing device and / or a material 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 material sheet crushing device is a double-shaft spiral blade conveyor or a double-shaft shredder, a ratchet roller roller machine; the material sheet conveying device is a material sheet belt conveyor or a material sheet scraper conveyor, a material 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 medicine stirring device and / or the material adding water stirring device are connected and installed at the front end of the material distribution and feeding device.

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

[0028] Step S1: starting the equipment: starting the spatial multi-layer ultra-high pressure box-type dehydration system through the controller, so that 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 in a start-up standby state, and the filter chamber moving device moves the filter press chamber to the material distribution / discharging station below the material distribution / discharging device;

[0029] Step S2: cloth distributing: the controller controls the filter chamber lifting hydraulic press to lift the movable bottom plate of the filter press chamber upward to the upper opening of the filter press chamber, controls the cloth feeding device to transport the organic waste to be dehydrated to the lower filter cloth on the cloth distributing / unloading device, the cloth distributing / unloading device pulls the upper filter cloth and the lower filter cloth to sandwich the dehydrated material and simultaneously transports them into the filter press chamber and folds the cloth-finished filter cloth neatly layer by layer onto the movable bottom plate in the filter press chamber, the cloth distributing / unloading device folds the cloth-finished filter cloth into the filter press chamber, the filter chamber lifting hydraulic press supports the movable bottom plate and simultaneously descends until the movable bottom plate descends to the bottom of the filter press chamber, and the cloth distributing / unloading device spreads the cloth-finished filter cloth to the upper opening of the filter press chamber;

[0030] Step S3: filtration and dehydration: the controller controls the filter chamber moving device to push the filter chamber that has completed material distribution from the material distribution / unloading station to the filter press station of the filter press hydraulic press; the controller controls the filter press hydraulic press to perform an upward lifting action; the filter press slide of the filter press hydraulic press lifts the movable bottom plate of the filter press chamber upward; the movable bottom plate supports the folded material layer in the filter press chamber to rise to the filter press workbench against the filter press hydraulic press; as the filter press hydraulic press continues to perform an upward lifting action, the filter press slide continues to lift the movable bottom plate of the filter press chamber upward; The folded material layer in the filter press chamber is vertically squeezed upward, and the moisture in the material under pressure flows to the periphery of the filter press chamber through the filter cloth between the two layers and is discharged through the drainage holes around the filter press chamber. When the set filter press time is reached, the filter press dehydration is completed, and the controller controls the hydraulic station to relieve the pressure of the filter press hydraulic press and make the filter press slide move downward. The movable bottom plate of the filter press chamber and the material fall down under the action of gravity until the filter press slide of the filter press hydraulic press completely exits the filter press chamber, and the movable bottom plate falls back 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 pressing station of the filter press hydraulic press back to the distribution / unloading station of the distribution / unloading device, the controller controls the filter chamber lifting hydraulic press to move upward to lift the movable bottom plate and the material in the filter chamber upward to the upper opening of the filter chamber, the controller starts the distribution / unloading device to recycle the filter cloth along the reverse traction winding of the cloth, pull the filter cloth with the material sheet out of the filter chamber layer by layer, and unload the material sheet from between the two layers of the filter cloth, and at the same time, the filter chamber lifting hydraulic press supports the movable bottom plate while synchronously performing an upward movement, until the movable bottom plate rises to the upper opening of the filter chamber, the distribution / unloading device recovers all the filter cloth and unloads the material sheet therein, and the unloading of one filter pressing round is completed;

[0032] Step S5: filter chamber reset: the controller controls the filter chamber lifting hydraulic press to descend and the cloth / unloading device to push the filter cloth out, the movable bottom plate of the filter press chamber and the filter cloth gradually descend back to the bottom of the filter press chamber to complete the reset, and a material filtration and dehydration cycle step is completed.

[0033] In one embodiment of the present invention, in the dehydration method of the aforementioned spatial multi-layer ultra-high pressure box-type dehydration system, the filter press hydraulic press in step S3 gradually increases the pressure so that the pressure on the material layer reaches more than 2.5 MPa and continues the filter press 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 filtering, it is pulled back to the distribution / unloading station of the distribution / unloading device by the filter chamber moving device. At the same time, the other filter press chamber that has completed filtering is pushed to the filtering station of the filter press hydraulic press by the filter chamber moving device for filtering.

[0035] Compared with the prior art, the present invention has obvious advantages and beneficial effects. By means of the above technical solution, the spatial multi-layer ultra-high pressure box-type dehydration system and dehydration method of the present 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 add water to dilute the organic waste and without increasing the amount of wastewater, which is more in line with the policy-oriented needs of "reducing pollution and reducing volume";

[0037] Second, the dehydration efficiency is higher. It takes only 10 to 60 minutes for each filter press cycle to dehydrate common organic wastes such as municipal sludge and cassava starch residue with a moisture content of about 80% to less than 50%, which is more than 80% shorter than that of the plate and frame filter press.

[0038] Third, before dehydrating municipal sludge and other organic waste, the amount of polyferric chloride and other chemicals added is less, or even not added, and the dry basis volume of the waste increases little or not after dehydration, which is more conducive to the subsequent fertilizer resource utilization;

[0039] 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. The subsequent fermentation, drying and crushing are easier, the processing performance is better, and the processing cost is lower.

[0040] 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 order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the present invention, the drawings required for use in the embodiments will be briefly introduced below. 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 paying creative work.

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

[0043] Figure 2 is a main cross-sectional view of the filter press chamber of the first embodiment of the present invention;

[0044] Figure 3 is a schematic front view of the structure of the second embodiment of the present invention;

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

[0046] Figure 5 is a schematic top view of the structure of the third embodiment of the present invention;

[0047] Figure 6 is a schematic top view of the structure of the fourth embodiment of the present invention;

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

[0049] Reference numerals:

[0050] 1- Main frame;

[0051] 2- material feeding device; 21- belt feeder; 22- screw feeder; 23- screw pump feeder

[0052] 3- Material distribution / discharging device;

[0053] 4-filter cloth; 41-upper filter cloth; 42-lower filter cloth;

[0054] 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;

[0055] 6-filter chamber moving device; 61-push and pull cylinder; 62-moving roller; 63-moving track;

[0056] 7-Filter chamber lifting hydraulic press;

[0057] 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;

[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 stirring device;

[0064] 15-Material adding water and stirring device. DETAILED DESCRIPTION

[0065] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, 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 are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0066] Embodiment 1:

[0067] 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;

[0068] Among them, 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;

[0069] 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.

[0070] The filter press chamber 5 is mainly composed of an inner lining plate 51, a side wall plate 52, a transverse 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 transverse 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, which 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.

[0071] The filter press chamber 5 has one filter chamber moving device 6 installed on the side of the filter press hydraulic press 8.

[0072] The filter press hydraulic press 8 is mainly composed of a filter press oil 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 installed on the main frame 1; the filter press frame 84 has two groups, which are respectively connected between the filter press base 82 and the filter press workbench 85, and the filter press workbench 85 is located above the filter press base 82; the filter press oil cylinder 81 is connected and installed 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 oil cylinder 81. In order to further increase the running stability of the filter press hydraulic press 8, a prestressed pull rod and a sliding guide column can also be connected and installed between the filter press base 82 and the filter press workbench 85.

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

[0074] Embodiment 2:

[0075] 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, and the difference is only in that:

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

[0077] In order to realize the simultaneous operation of filter pressing dehydration and material distribution / unloading and further improve the dehydration efficiency and processing capacity of the equipment, there are two filter pressing chambers 5 which are installed in a straight line on the filter chamber moving devices 6 on both sides of the filter pressing hydraulic press 8.

[0078] In order to facilitate the positioning and pulling of the filter cloth 4 when the material distribution / discharging device 3 starts to distribute 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.

[0079] Embodiment three:

[0080] 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, and the difference is only that:

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

[0082] In order to make the cloth distributing / discharging device 3 fold the filter cloth 4 more neatly when distributing the cloth to the filter press chamber 5 and further improve the effect of filter pressing and dehydration, a filter cloth folding and positioning mechanism 11 is additionally provided and installed; there are four filter cloth folding and positioning mechanisms 11, which are respectively connected and installed at the four upper corners of the filter press chamber 5. The filter cloth folding and positioning mechanism 11 is a finger cylinder. When the cloth distributing / discharging device 3 lays a layer of the filter cloth 4 to one side of the filter press chamber 5 and prepares to switch to lay the next layer, the finger cylinder acts to clamp the two sides of the filter cloth 4 to prevent the filter cloth 4 from being brought to the other side of the filter press chamber 5.

[0083] Embodiment 4:

[0084] 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, and the only difference is that:

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

[0086] 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 press 8.

[0087] In order to better connect with the rear material processing equipment, improve the conveying stability of the dehydrated material, and avoid the material from arching and falling, a sheet crushing device 12 and a sheet conveying device 13 are additionally installed; the sheet crushing device 12 is connected and installed at the rear end of the material distribution / discharging device 3; the sheet conveying device 13 is connected and installed at the rear end of the sheet crushing device 12. The sheet crushing device 12 is a double-shaft spiral blade conveyor, and can also be a double-shaft shredder or a ratchet roller machine; the sheet conveying device 13 is a belt conveyor, and can also be a scraper conveyor or a screw conveyor.

[0088] Embodiment five:

[0089] 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, and the only difference is that:

[0090] 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 tilted manner.

[0091] There are four filter cloth folding and positioning mechanisms 11, which are respectively connected and installed on the main frame 1 below the material distributing / discharging device 3 and above the filter press chamber 5. The filter cloth folding and positioning mechanism 11 is composed of a telescopic cylinder and a positioning rod, wherein 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 material distributing / discharging device 3 lays a layer of the filter cloth 4 to 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 the two sides of the filter cloth 4 to prevent the filter cloth 4 from being brought to the other side of the filter press chamber 5.

[0092] In order to further improve the filter press dehydration effect and efficiency, as well as improve the stability of the cloth, a material dosing stirring device 14 and a material water adding stirring device 15 are additionally provided; the material dosing stirring device 14 and the material water adding stirring device 15 are respectively connected and installed at the front end of the cloth 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: starting the equipment: starting 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 press 7, the filter press hydraulic press 8, and the hydraulic station 9 are in a 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.

[0095] 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, 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, and 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, and the distribution / unloading device 3 folds the finished filter cloth 5 into the filter press chamber 5 while the filter chamber lifting hydraulic press 7 supports the movable bottom plate 55 and simultaneously descends until the movable bottom plate 55 descends to the bottom of the filter press chamber 5, and the distribution / unloading device 3 spreads the finished filter cloth 4 to the upper port of the filter press chamber 5.

[0096] Step S3: filtration and dehydration: the controller 10 controls the filter chamber moving device 6 to push the filter chamber 5 that has completed material distribution from the material distribution / unloading station of the material distribution / unloading 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 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 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; 3 continuously presses the folded material layer in the filter press chamber 5 vertically upward, and the moisture in the material under pressure flows to the periphery of the filter press chamber 5 through the filter cloth 4 between the two layers and is discharged through the drainage holes around the filter press chamber 5. When the set filter press time is reached, the filter press dehydration is completed, and the controller 10 controls the hydraulic station 9 to relieve the pressure of the filter press hydraulic press 8 and make the filter press slide 83 move downward, and the movable bottom plate 55 of the filter press chamber 5 and the material descend accordingly 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 descends back 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 press chamber 5 from the filter press station of the filter press hydraulic press 8 back to the feeding / unloading station of the material distribution / 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 material distribution / unloading device 3 to recycle the filter cloth 4 along the reverse traction winding of the cloth, pull the filter cloth 4 with the material sheet out of the filter press chamber 5 layer by layer and unload the material sheet from between the two layers of the filter cloth 4, and at the same time, the filter chamber lifting hydraulic press 7 supports the movable bottom plate 55 while synchronously performing an upward movement, until the movable bottom plate 55 rises to the upper opening of the filter press chamber 5, the material distribution / 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.

[0098] Step S5: filter chamber reset: the controller 10 controls the filter chamber lifting hydraulic press 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 a material filtration and dehydration cycle step is completed.

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

[0100] Step S1 starts the equipment: the spatial multi-layer ultra-high pressure box 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 a 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.

[0101] 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 material distributing / discharging device 3. The material 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 finished cloth is neatly folded layer by layer onto the movable bottom plate 55 in the filter press chamber 5, and the cloth distributing / unloading device 3 folds the filter cloth 4 with finished cloth of cassava starch residue into the filter press chamber 5, and the filter chamber lifting hydraulic press 7 supports the movable bottom plate 55 while synchronously descending, until the movable bottom plate 55 descends to the bottom of the filter press chamber 5, and the cloth distributing / unloading device 3 spreads the filter cloth 4 with finished cloth of cassava starch residue to the upper port of the filter press chamber 5.

[0102] 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 / unloading station of the distribution / unloading 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 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 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 filter press time is reached, the filter press dehydration is completed, and 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.

[0103] 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 material distribution / unloading station of the material distribution / 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 material distribution / unloading device 3 to recycle the filter cloth along the reverse traction winding of the cloth. 4. The filter cloth 4 carrying the cassava starch residue pieces are pulled out from the filter press chamber 5 layer by layer, and the cassava starch residue pieces are removed 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 synchronously performing an ascending action, until 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, and the unloading of one cassava starch residue filter pressing and dehydration round is completed.

[0104] Step S5: filter chamber reset: the controller 10 controls the filter chamber lifting hydraulic press 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 a cassava starch residue pressure filtration and dehydration step is completed.

[0105] 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 on the sugar filter mud, which is similar to the previous embodiment, except that:

[0106] In step S3, there are two filter press chambers 5, one of which 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 filtration of the sugar filter mud, and the other filter press chamber 5 which is completed with feeding is pushed to the filtration station of the filter press hydraulic press 8 by the filter chamber moving device 6 for filtration.

[0107] The spatial multi-layer ultra-high pressure box-type dehydration system and dehydration method provided by the present 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 add water to dilute the organic waste and without increasing the amount of wastewater, which is more in line with the policy-oriented needs of "reducing pollution and reducing volume";

[0109] Second, the dehydration efficiency is higher. It takes only 10 to 60 minutes for each filter press cycle to dehydrate common organic wastes such as municipal sludge and cassava starch residue with a moisture content of about 80% to less than 50%, which is more than 80% shorter than that of the plate and frame filter press.

[0110] Third, before dehydrating municipal sludge and other organic waste, the amount of polyferric chloride and other chemicals added is less, or even not added, and the dry basis volume of the waste increases little or not after dehydration, which is more conducive to the subsequent fertilizer resource utilization;

[0111] 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. The subsequent fermentation, drying and crushing are easier, the processing performance is better, and the processing cost is lower.

[0112] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification 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 still fall within the scope of the technical solution of the present invention.

[0113] In addition, although each operation is described in a specific order, this should not be construed 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 are included in the above discussion, these should not be construed 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 mode.

[0114] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the scope of the claims of the present invention to be approved.

Claims

1. A spatial multi-layer ultra-high pressure box-type dehydration system, characterized in that: It includes a main frame, a material feeding device, a material distributing / 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; 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 with the material distribution and unloading device, and the material distribution and feeding device is installed above the material distribution and unloading device; the material distribution and unloading device is connected with the filter press chamber, and the material distribution and unloading device is installed above the filter press chamber; the filter cloth comprises an upper filter cloth and a lower filter cloth, which are respectively wound on the material distribution and 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 and 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 with the hydraulic station through hydraulic oil pipes; the material distribution and feeding device, the material distribution and 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 with 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 1 is characterized in that: The filter chamber moving device comprises a horizontal 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 / discharging device, 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: The number of the filter press chambers is one to four, which are respectively mounted 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 comprises an inner lining plate, a side wall plate, a transverse rib plate, a vertical rib plate and a movable bottom plate; The inner lining plates are four in number and are respectively connected and fixed to the inner side of the side wall plates; the side wall plates are four in number and are connected in pairs at the corners; the transverse rib plates and the vertical rib plates are respectively welded transversely and vertically to the outer side 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 1 is characterized in that: Also included is 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 is characterized in that: The transverse ribs around the filter press chamber are welded and installed in a downward tilted manner.

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 material sheet crushing device is a double-axis spiral blade conveyor, a double-axis shredder or a ratchet roller machine; the material sheet conveying device is a material sheet belt conveyor, a material sheet scraper conveyor or a material 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 medicine stirring device and / or a material adding water stirring device; The material adding medicine stirring device and / or the material adding water stirring device are connected and installed at the front end of the material distribution and feeding device.

12. A dehydration method for a spatial multi-layer ultra-high pressure box-type dehydration system according to any one of claims 1 to 11, characterized in that: The following steps are involved: Step S1: starting the equipment: starting the spatial multi-layer ultra-high pressure box-type dehydration system through the controller, so that 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 in a start-up standby state, and the filter chamber moving device moves the filter press chamber to the material distribution / discharging station below the material distribution / discharging device; Step S2: cloth distributing: the controller controls the filter chamber lifting hydraulic press to lift the movable bottom plate of the filter press chamber upward to the upper opening of the filter press chamber, controls the cloth feeding device to transport the organic waste to be dehydrated to the lower filter cloth on the cloth distributing / unloading device, the cloth distributing / unloading device pulls the upper filter cloth and the lower filter cloth to sandwich the dehydrated material and simultaneously transports them into the filter press chamber and folds the cloth-finished filter cloth neatly layer by layer onto the movable bottom plate in the filter press chamber, the cloth distributing / unloading device folds the cloth-finished filter cloth into the filter press chamber, the filter chamber lifting hydraulic press supports the movable bottom plate and simultaneously descends until the movable bottom plate descends to the bottom of the filter press chamber, and the cloth distributing / unloading device spreads the cloth-finished filter cloth to the upper opening of the filter press chamber; Step S3: filtration and dehydration: the controller controls the filter chamber moving device to push the filter chamber that has completed material distribution from the material distribution / unloading station to the filter press station of the filter press hydraulic press; the controller controls the filter press hydraulic press to perform an upward lifting action; the filter press slide of the filter press hydraulic press lifts the movable bottom plate of the filter press chamber upward; the movable bottom plate supports the folded material layer in the filter press chamber to rise to the filter press workbench against the filter press hydraulic press; as the filter press hydraulic press continues to perform an upward lifting action, the filter press slide continues to lift the movable bottom plate of the filter press chamber upward; The folded material layer in the filter press chamber is vertically squeezed upward, and the moisture in the material under pressure flows to the periphery of the filter press chamber through the filter cloth between the two layers and is discharged through the drainage holes around the filter press chamber. When the set filter press time is reached, the filter press dehydration is completed, and the controller controls the hydraulic station to relieve the pressure of the filter press hydraulic press and make the filter press slide move downward. The movable bottom plate of the filter press chamber and the material fall down under the action of gravity until the filter press slide of the filter press hydraulic press completely exits the filter press chamber, and the movable bottom plate falls back 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 pressing station of the filter press hydraulic press back to the distribution / unloading station of the distribution / unloading device, the controller controls the filter chamber lifting hydraulic press to move upward to lift the movable bottom plate and the material in the filter chamber upward to the upper opening of the filter chamber, the controller starts the distribution / unloading device to recycle the filter cloth along the reverse traction winding of the cloth, pull the filter cloth with the material sheet out of the filter chamber layer by layer, and unload the material sheet from between the two layers of the filter cloth, and at the same time, the filter chamber lifting hydraulic press supports the movable bottom plate while synchronously performing an upward movement, until the movable bottom plate rises to the upper opening of the filter chamber, the distribution / unloading device recovers all the filter cloth and unloads the material sheet therein, and the unloading of one filter pressing round is completed; Step S5: filter chamber reset: the controller controls the filter chamber lifting hydraulic press to descend and the cloth / unloading device to push the filter cloth out, the movable bottom plate of the filter press chamber and the filter cloth gradually descend back to the bottom of the filter press chamber to complete the reset, and a material filtration and dehydration cycle step is completed.

13. The dehydration method of the spatial multi-layer ultra-high pressure box-type dehydration system according to claim 12, characterized in that: In step S3, the filter press hydraulic press gradually increases the pressure so that the pressure on the material layer reaches above 2.5 MPa and continues the filter press for 10 to 60 minutes; In step S3, there are two or more filter press chambers. After one of the filter press chambers completes filtering, it is pulled back to the distribution / unloading station of the distribution / unloading device by the filter chamber moving device. At the same time, the other filter press chamber that has completed filtering is pushed to the filtering station of the filter press hydraulic press by the filter chamber moving device for filtering.

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