Spatial multilayer ultrahigh pressure belt type dehydration system

Abstract

The utility model relates to a spatial multilayer ultrahigh pressure belt type dehydration system which comprises a main rack, a material distributing and feeding device, a material distributing device, a filter belt, a filter belt traction machine, a filter pressing hydraulic machine, a hydraulic station and a controller, the material distributing and feeding device, the material distributing device, the filter belt traction machine and the filter pressing hydraulic machine are connected and mounted on the main rack; and the output end of the material distributing and feeding device is connected and mounted above the material distributing device. The dehydration method comprises the steps of equipment starting, material distribution, filter pressing dehydration and unloading. The organic waste dehydration device is higher in dehydration efficiency and lower in cost, and can be used as an organic waste dehydration device capable of reducing pollution and carbon.

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 belt 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, 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 well meet the above needs, which is mainly reflected in the following aspects:

[0004] 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 it 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 and does not meet the needs of "pollution reduction and volume reduction."

[0005] Second, the dehydration efficiency is low, and a dehydration cycle often takes 4 to 6 hours; third, before dehydrating organic waste such as municipal sludge, more agents such as polyferric chloride need to be added and stirred, which leads to an increase in the dry basis volume of the waste and increased processing costs, and a significant increase in the iron content of the sludge, which is not conducive to the resource utilization of fertilizers.

[0006] Fourth, it is impossible to dehydrate organic waste to a moisture content of 50% or even below 40% in a short period of time and with high efficiency, resulting in high costs for subsequent environmental protection treatment and resource utilization.

[0007] Fifth, the filter cake is relatively thick, which makes subsequent fermentation, drying and crushing extremely difficult and increases the processing cost.

[0008] In view of the above-mentioned defects in the existing technology, the inventor has continuously researched and designed, and after repeated trial production and improvement, finally created the present utility model which is of real practical value. Summary of the Invention

[0009] The purpose of this utility model is to overcome the defects of the existing technology and provide a new type of spatial multi-layer ultra-high pressure belt dehydration system and dehydration method, so as 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, provide technical support for the continuous improvement of the level of environmental protection management and resource utilization of organic waste, and thus be more suitable for practical use.

[0010] Another purpose of the utility model is to overcome the defects of the existing technology and provide a new spatial multi-layer ultra-high pressure belt dehydration system with a new structure. The technical problem to be solved is to make it an organic waste dehydration equipment with higher dehydration efficiency, lower cost, and more "pollution reduction and carbon reduction", so that it is more suitable for practical use.

[0011] The purpose of the present invention and the technical problems it solves are achieved by adopting the following technical solutions. According to the present invention, a spatial multi-layer ultra-high pressure belt dewatering system is proposed, which includes a main frame, a material distribution feeding device, a material distribution device, a filter belt, a filter belt traction machine, a filter press hydraulic press, a hydraulic station and a controller; the material distribution feeding device, the material distribution device, the filter belt traction machine and the filter press hydraulic press are connected and installed on the main frame; the output end of the material distribution feeding device is connected and installed above the material distribution device;

[0012] The filter belt comprises an upper filter belt and a lower filter belt, and the upper filter belt and the lower filter belt are respectively wound on a belt tractor;

[0013] The filter press hydraulic press is connected to the hydraulic station through a hydraulic oil pipe; the material feeding device, material distribution device, filter belt traction machine, filter press hydraulic press, hydraulic station and controller are electrically connected;

[0014] The filter press hydraulic press includes a filter press cylinder, a filter press cylinder seat, a filter press slide, a filter press plate, a lifting linkage ring, a filter press guide post, and a filter press workbench. The filter press workbench is connected and installed directly above the main frame. The filter press guide post is connected from top to bottom between the filter press cylinder seat, the filter press slide, the filter press plate, and the filter press workbench. The filter press cylinder is connected and installed on the filter press cylinder seat. The upper end surface of the filter press slide is connected and installed on the piston rod of the filter press cylinder.

[0015] The filter press plate includes an upper filter press plate, a middle filter press plate and a lower filter press plate, wherein the upper filter press plate is connected and installed on the lower end surface of the filter press slide, the lower filter press plate is connected and installed above the filter press workbench, and the middle filter press plate is connected and installed on the filter press guide column between the upper filter press plate and the lower filter press plate; a lifting linkage ring is set between the upper filter press plate and the middle filter press plate, and the upper filter belt and the lower filter belt pass through between the upper filter press plate, the middle filter press plate and the lower filter press plate.

[0016] Furthermore, the filter plate is provided with a filter plate water guide groove on the upper surface and the lower surface; a filter plate porous panel is installed above the filter plate water guide groove; and a filter plate water outlet pipe is connected to the end surface of the filter plate water guide groove.

[0017] Furthermore, it also includes a filter press plate water absorbent pad; the filter press plate water absorbent pad is connected and installed on the surface of the filter plate porous panel.

[0018] Furthermore, the filter press hydraulic press is installed in series in one or more units.

[0019] Furthermore, it also includes a material blocking mechanism; the material blocking mechanism includes a material blocking strip and a material blocking cylinder; the material blocking strip is connected and installed on the piston rod of the material blocking cylinder, and the material blocking strip is located on both sides of the filter press plate and the filter belt in the running direction; the material blocking cylinder is connected to the hydraulic station through an oil pipe.

[0020] Furthermore, a vacuum negative pressure device is connected to the water outlet pipe of the filter plate.

[0021] Furthermore, it also includes a filter belt guide mechanism, which is connected and installed on the main frame on both sides of the filter belt.

[0022] Furthermore, the material distribution feeding device is a belt feeder or a screw feeder, a screw pump feeder, or a plunger pump feeder; the material distribution device is a belt distribution machine or a screw distribution machine, and the output end of the material distribution device is located on the lower filter belt of the filter belt tractor.

[0023] Furthermore, it also includes a material flake crushing device; the material flake crushing device is connected and installed below the discharge end of the filter belt tractor;

[0024] The material breaking device is a screw conveyor or a double-shaft shredder, a chain crusher, or a hammer / blade crusher.

[0025] Furthermore, it also includes a material dosing and stirring device; the material dosing and stirring device is connected and installed at the front end of the material feeding device.

[0026] Compared with the prior art, the present invention has obvious advantages and beneficial effects. It has at least the following advantages:

[0027] 1. This utility model can directly feed and dehydrate non-fluid organic waste with a moisture content of less than 85%. There is no need to dilute the organic waste with water, and the amount of wastewater does not increase. It is more in line with the guiding demand of "pollution reduction and volume reduction";

[0028] 2. This utility model uses multiple hydraulic presses to gradually increase the dehydration rate by applying pressure to the material, making the dehydration efficiency higher. It can dehydrate common organic wastes such as municipal sludge, papermaking sludge, fecal sludge, and cassava starch residue with a moisture content of about 80% to less than 50%. Each filtration cycle only takes 2 to 5 minutes, which is more than 90% shorter than that of a plate and frame filter press.

[0029] 3. Before dehydrating municipal sludge and other organic waste, the utility model requires less or no polyferric chloride or other chemicals to be added. After dehydration, the dry weight of the waste increases little or not at all, which is more conducive to the subsequent fertilizer resource utilization.

[0030] 4. The filter cake of organic waste after dehydration is thinner, generally only 3 to 5 mm thick, compared with 20 to 40 mm of the plate and frame filter press, and subsequent fermentation, drying and crushing processing are easier and the processing cost is lower.

[0031] 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

[0032] Figure 1 It is a schematic front view of the structure of the first embodiment of the present invention.

[0033] Figure 2 It is a schematic front view of the hydraulic filter press according to the first embodiment of the present invention.

[0034] Figure 3 It is a partial sectional schematic diagram of the axial side of the medium pressure filter plate of the first embodiment of the present utility model.

[0035] Figure 4 It is a schematic front view of the structure of the second embodiment of the present invention.

[0036] Figure 5 It is a partial sectional schematic diagram of the axial side of the medium-pressure filter plate of the second embodiment of the present utility model.

[0037] Figure 6 It is a schematic front view of the structure of the third embodiment of the present invention.

[0038] Figure 7 It is a partial sectional schematic diagram of the axial side of the medium-pressure filter plate of the third embodiment of the present invention.

[0039] Figure 8 It is a schematic front view of the structure of the fourth embodiment of the present invention.

[0040] Figure 9 It is a schematic front view of the structure of the fifth embodiment of the present invention.

[0041] in:

[0042]

Main component symbol description

[0043] 1: Main frame 2: Fabric feeding device

[0044] 21: Belt feeder 22: Screw feeder

[0045] 23: Screw pump feeder 24: Plunger pump feeder

[0046] 3: Fabric device 31: Belt fabric machine

[0047] 32: spiral cloth machine 4: filter belt

[0048] 41: Upper filter belt 42: Lower filter belt

[0049] 5: Filter belt traction machine 6: Filter press hydraulic press

[0050] 61: Filter press oil cylinder 62: Filter press oil cylinder seat

[0051] 63: Filter press slide 64: Filter press plate

[0052] 641: Upper filter plate 642: Middle filter plate

[0053] 643: The lower filter plate 644: filter plate water guide groove

[0054] 645: Filter plate porous panel 646: Filter plate absorbent pad

[0055] 647: filter plate outlet pipe 65: lifting linkage ring

[0056] 66: Filter press guide column 67: Filter press workbench

[0057] 7: Hydraulic station 8: Controller

[0058] 9: material blocking mechanism 91: material blocking strip

[0059] 92: Blocking cylinder 10: Vacuum negative pressure device

[0060] 11: Filter belt guide mechanism 12: Material crushing device

[0061] 13: Material dosing and stirring device DETAILED DESCRIPTION

[0062] 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 belt dehydration system proposed by the present invention.

[0063] Example 1:

[0064] See also Figure 1 、 Figure 2 and Figure 3As shown, the spatial multi-layer ultra-high pressure belt dewatering system of the first embodiment of the present invention mainly comprises a main frame 1, a material distribution feeding device 2, a material distribution device 3, a filter belt 4, a filter belt tractor 5, a filter press hydraulic press 6, a hydraulic station 7 and a controller 8; the material distribution feeding device 2, the material distribution device 3, the filter belt tractor 5, and the filter press hydraulic press 6 are connected and installed on the main frame 1;

[0065] The material distribution and feeding device 2 is connected and installed on the main frame 1, and the output end of the material distribution device 3 is located above the lower filter belt 42;

[0066] The material distribution and feeding device 2 is a belt feeder 21, the output end of which is connected and installed above the material distribution device 3; the filter belt includes an upper filter belt 41 and a lower filter belt 42, each of which is wound around the filter belt tractor 5; the material distribution device 3 is a belt distribution machine 31, which is connected and installed on the main frame 1 at the lower position of the lower filter belt tractor 52 and above the lower filter belt 42; the filter press hydraulic press 6 is connected to the hydraulic station 7 via a hydraulic oil pipe; the material distribution and feeding device 2, the distribution device 3, the filter belt tractor 5, the filter press hydraulic press 6, the hydraulic station 7, and the controller 8 are electrically connected;

[0067] The filter press hydraulic press 6 includes a filter press cylinder 61, a filter press cylinder seat 62, a filter press slide 63, a filter press plate 64, a lifting linkage ring 65, a filter press guide column 66, and a filter press workbench 67; the filter press workbench 67 is connected and installed directly above the main frame 1; the filter press guide column 66 is connected from top to bottom between the filter press cylinder seat 62, the filter press slide 63, the filter press plate 64, and the filter press workbench 67; the filter press cylinder 61 is connected and installed on the filter press cylinder seat 62; the upper end surface of the filter press slide 63 is connected and installed on the piston rod of the filter press cylinder 61;

[0068] The filter press plate 64 includes an upper filter press plate 641, a middle filter press plate 642, and a lower filter press plate 643. The upper filter press plate 641 is connected and mounted on the lower end surface of the filter press slide 63, the lower filter press plate 643 is connected and mounted above the filter press workbench 67, and there are two middle filter press plates 642, which are respectively connected and mounted on the filter press guide column 66 between the upper filter press plate 641 and the lower filter press plate 643; the lifting linkage ring 65 is connected between the upper filter press plate 641 and the middle filter press plate 642;

[0069] The filter belt includes an upper filter belt 41 and a lower filter belt 42, which are respectively wound on a belt tractor; the upper filter belt 41 and the lower filter belt 42 pass between the upper filter plate 641, the middle filter plate 642 and the lower filter plate 643.

[0070] The filter plate 64 has filter plate water guide grooves 644 on its upper and lower surfaces. A filter plate porous panel 645 is installed above the filter plate water guide grooves 644. The end surfaces of the filter plate water guide grooves are connected to filter plate outlet pipes 647.

[0071] Example 2:

[0072] See also Figure 4 and Figure 5 As shown, the spatial multi-layer ultra-high pressure belt dehydration system of the second embodiment of the present invention differs from that of the first embodiment only in that:

[0073] The material distribution and feeding device 2 is a screw feeder 22 ; the material distribution device 3 is a screw distribution machine 32 .

[0074] To accommodate the differing pressure requirements at the front and rear ends of material dehydration, two hydraulic filter presses 6 are installed in series. During dehydration, the material enters the first hydraulic filter press 6 with a relatively low pre-pressing pressure, and then enters the second hydraulic filter press 6 with a higher pressure for optimal dehydration. To address the issue of residual moisture in the porous filter panel 645 falling back into the material when the filter press plate 64 is lifted, affecting dehydration, a filter plate absorbent pad 646 is installed on the filter plate 64. The absorbent pad 646 is attached to the surface of the porous filter panel 645.

[0075] In order to solve the problem that some high-moisture content and high-fluidity materials such as municipal sludge have not been completely solidified during the initial filtration, and are prone to leaking and escaping from both sides of the filter belt 4 in the direction of movement of the filtration space formed by the filter plate 64, a material blocking mechanism 9 is added; the material blocking mechanism 9 includes a material blocking strip 91 and a material blocking cylinder 92; the material blocking strip 91 is connected and installed on the piston rod of the material blocking cylinder 92, and the material blocking strip 91 is located on both sides of the filter plate 64 in the direction of movement of the filter belt 4; the material blocking cylinder 92 is connected to the hydraulic station 7 through an oil pipe. Before the filter material starts to be filtered, the material blocking strip 91 presses the filter plate 64 on both sides of the filter belt 4 in the direction of movement under the pressure of the material blocking cylinder 92, so that the material cannot leak and escape from these two sides when the filter plate 64 is filtering the filter material. Other structures are the same as those in Example 1.

[0076] Example 3:

[0077] See also Figure 6 and Figure 7 As shown, the spatial multi-layer ultra-high pressure belt dehydration system of the third embodiment of the present invention differs from that of the first embodiment only in that:

[0078] In order to enable the water entering the filter plate water guide groove 644 and the filter plate porous panel 645 of the filter plate 64 during the filter pressing process to be discharged faster and more thoroughly, and to further improve the filter pressing and dehydration effect, a vacuum negative pressure device 10 is connected and installed on the filter plate outlet pipe 647. In order to better prevent the filter belt 4 from deviating, and when entering the filter pressing space of the filter plate 64, the two sides of the upper filter belt 41 and the lower filter belt 42 can automatically fold inward to form a package for the filter pressing material, to prevent the material from leaking and escaping to the two sides during the filter pressing and dehydration, a filter belt guide mechanism 11 is additionally provided and installed; the filter belt guide mechanism 11 is connected and installed on the main frame 1 on both sides of the filter belt 4. Other structures are the same as those in Example 1

[0079] Example 4:

[0080] See also Figure 8 As shown, the spatial multi-layer ultra-high pressure belt dehydration system of the fourth embodiment of the present invention differs from the third embodiment only in that:

[0081] The material feeding device 2 is a screw pump feeder 23 .

[0082] To better connect with the downstream material handling equipment and improve the conveying stability of the dehydrated material, preventing it from accumulating or falling, a flake crushing device 12 is also installed. This device is connected to the discharge end of the filter belt tractor 5. This device is a hammer / blade crusher. Other structural features are the same as those of Example 3.

[0083] Embodiment 5:

[0084] See also Figure 9 As shown, the spatial multi-layer ultra-high pressure belt dehydration system of the fifth embodiment of the present invention differs from that of the fourth embodiment only in that:

[0085] In order to meet the feeding needs of conveying filter press materials with higher moisture and viscosity, such as municipal sludge, from low position to high position, the material feeding device 2 is a plunger pump feeder 24.

[0086] In order to increase the filtration time of the material without increasing the number of filter plates 64 of a single filter press hydraulic press 6, thereby controlling the overall height of the equipment and ensuring the processing efficiency of the equipment, three filter press hydraulic presses 6 are installed in series; when the material is filtration-dehydrated, when the filter material enters the first filter press hydraulic press 6, it is first pre-pressed with a relatively low pressure, and when it enters the second and third filter press hydraulic presses 6, it is filtration-pressed more times and for a longer time with a higher pressure to achieve a better dehydration effect.

[0087] The flake crushing device 12 is a screw conveyor, connected and mounted below the discharge end of the filter belt hauler. It can be a screw conveyor, a dual-shaft shredder, a chain crusher, or a hammer / blade crusher. To further enhance the filter press dewatering effectiveness and efficiency of highly viscous materials such as municipal sludge requiring the addition of chemicals for conditioning, a material dosing and stirring device 13 is provided. This device is connected and mounted at the front end of the material distribution and feeding device 2. Other structural features are the same as those of Example 3.

[0088] The dehydration method of the spatial multi-layer ultra-high pressure belt dehydration system of the utility model comprises the following steps:

[0089] S1 Start the equipment: Start the spatial multi-layer ultra-high pressure belt dehydration system through the controller 8, so that the material feeding device 2, the material distribution device 3, the filter belt traction machine 5, and the hydraulic station 7 are in the start-up standby state.

[0090] S2: The controller 8 controls the feeding device 2 to feed the material to the feeding device 3. The method is similar to the third embodiment, except that:

[0091] The material feeding device 2 is a screw pump feeder 23 .

[0092] To better connect with the back-end material handling equipment and improve the conveying stability of the dehydrated material, and to prevent the material from arching and falling, a flake crushing device 12 is additionally provided and installed; the flake crushing device 12 is connected to the discharge end of the filter belt tractor 5. The flake crushing device 12 is a hammer / blade type crusher.

[0093] Example 6:

[0094] See also Figure 9 As shown, the spatial multi-layer ultra-high pressure belt dehydration system of the fifth embodiment of the present invention differs from that of the fourth embodiment only in that:

[0095] In order to meet the feeding needs of conveying filter press materials with higher moisture and viscosity, such as municipal sludge, from low position to high position, the material feeding device 2 is a plunger pump feeder 24.

[0096] To increase the material filtration time without increasing the number of filter plates 64 in a single hydraulic filter press 6, thereby controlling the overall height of the equipment and ensuring processing efficiency, three hydraulic filter presses 6 are installed in series. During filtration dehydration, the material enters the first hydraulic filter press 6 with a relatively low pre-pressing pressure. Upon entering the second and third hydraulic filter presses 6, higher pressure is applied for more repeated, longer-term filtration to achieve better dehydration results. Other structural features are the same as those of Example 4.

[0097] The sheet crushing device 12 is a screw conveyor.

[0098] In order to further improve the filter pressing and dehydration effect and efficiency of municipal sludge and other highly viscous materials that require the addition of chemicals for conditioning, a material dosing and stirring device 13 is additionally provided; the material dosing and stirring device 13 is connected and installed at the front end of the material feeding device 2.

[0099] The dehydration method of the spatial multi-layer ultra-high pressure belt dehydration system of the utility model comprises the following steps:

[0100] S1 Start the equipment: Start the spatial multi-layer ultra-high pressure belt dehydration system through the controller 8, so that the material feeding device 2, the material distribution device 3, the filter belt traction machine 5, and the hydraulic station 7 are in the start-up standby state.

[0101] S2 cloth: the controller 8 controls the cloth feeding device 2 to interact with the cloth device 3642 and the lower filter plate 643 to perform filter pressing and dehydration on the first and second filter press material layers as described above until the set time, and the hydraulic station 7, the filter press hydraulic press 6, the belt cloth machine 31, and the filter belt tractor 5 repeat the above actions to complete the cloth feeding of the third filter press material layer, and transport the third filter press material layer to the first filter press station, and synchronously the second filter press material layer is transported to the second filter press station, and the first filter press material layer is transported to the third filter press station, or the set number of filter press times and total filter press time have been reached and are transported to the filter belt tractor 5 and the filter belt 4 for unloading.

[0102] S4 unloading: When the first material layer completes the set number of filter pressing, it is transported upward or downward by the filter belt tractor 5 and the filter belt 4 to leave the filter pressing station of the upper filter plate 641 and the middle filter plate 642 or the middle filter plate 642 and the lower filter plate 643, and the upper filter belt 41 and the lower filter belt 42 are separated. The first material layer is filtered into pieces and is unloaded from between the upper filter belt 41 and the lower filter belt 42 during the operation of the filter belt 4 to complete the unloading. This cycle is repeated, and the system completes the filter pressing and dehydration of one material layer after another, realizing the filter pressing and dehydration function.

[0103] Example 7: In a specific embodiment of the dewatering method of the spatial multi-layer ultra-high pressure belt dewatering system of the present utility model, a spatial multi-layer ultra-high pressure belt dewatering system equipped with a filter press hydraulic press 6, and the filter press hydraulic press 6 is equipped with two filter press plates 64 and a distribution device 3 located at the lower position of the filter belt tractor 5, and the filter belt 4 runs from the lower position to the higher position is used to perform filter press dewatering on papermaking sludge with an initial moisture content of 70%. The filter press time of each filter press station of the filter press hydraulic press 6 is set to 40 seconds, and the total filter press time of the three filter press stations for the papermaking sludge is 120 seconds. The target moisture content of the papermaking sludge after dehydration is 45%. The specific steps of the dewatering method are as follows:

[0104] S1 starts the equipment: starts the spatial multi-layer ultra-high pressure belt dehydration system through the controller 8, so that the belt feeder 21, the belt distributor 31, the filter belt traction machine 5, and the hydraulic station 7 are in the start-up standby state.

[0105] S2 feeding: the controller 8 controls the belt feeder 21 to feed the papermaking sludge with 70% moisture to the belt feeding machine 31. The belt feeding machine 31 and the filter belt tractor 5 run toward the filter press hydraulic press 6 at the same time. The belt feeding machine 31 transports the papermaking sludge with 70% moisture and evenly distributes it to the lower filter belt 42 running on the filter belt tractor 5 below it. When the filter belt tractor 5 pulls the lower filter belt 42 toward the filter press hydraulic press 6 for the length of the filter press station of a filter press plate 64, the belt feeding machine 31 stops running. At the same time, the upper filter belt tractor 51 pulls the upper filter belt 41 and the lower filter belt 42 to continue to run synchronously upward toward the filter press hydraulic press 6 and sandwich the papermaking sludge with 70% moisture in the middle and transports it to the filter press station of the lower filter plate 643 and the middle filter plate 642.

[0106] S3 Filter Press Dehydration: When the filter belt tractor 5 pulls the upper filter belt 41 and the lower filter belt 42 with the papermaking sludge material layer containing 70% of the water to the center position of the filter pressing station of the lower filter plate 643 and the middle filter plate 642, the controller 8 controls the filter press hydraulic press 6 to press down, and the filter press slide 63 drives the upper filter plates 641 and 642 to move vertically downward synchronously until the pressure of the filter press oil cylinder 61 acts on the papermaking sludge material layer containing 70% of the water contained in the upper filter belt 41 and the lower filter belt 42 and the lower filter plate 643. The water in the papermaking sludge containing 70% of the water flows out of the surface under the pressure of the filter press oil cylinder 61 and is separated and separated from the first filter plate 643. After that, it passes through the upper filter belt 41 and the lower filter belt 42 and the porous panel 645 of the filter plate, the water guide trough 644 and the filter plate outlet pipe 647 and is discharged. When the first papermaking sludge material layer is filtered in the first filter press station for the set 40 seconds, the hydraulic station 7 relieves the pressure on the filter press hydraulic press 6 to stop the filtration and make the filter press hydraulic press 6 move upward. The filter press slide 63 drives the upper filter press plate 641 and the middle filter press plate 642 to move upward to release the upper filter belt 41 and the lower filter belt 42 and the papermaking sludge material layer therein. The belt feeder 31 and the filter belt traction machine 5 restart and continue to move toward the filter press hydraulic press 6. The feeding step S2 is repeated to complete the first step. The first papermaking sludge layer is pulled upward by the filter belt tractor 5 and the filter belt 4 to the center position of the second filter press station of the two medium pressure filter plates 642. The second papermaking sludge layer with 70% moisture is synchronously pulled and transported to the center position of the filter press station of the lower filter plate 643 and the medium pressure filter plate 642. The filter press hydraulic press 6 performs a second downward pressing action. The filter press slide 63 drives the upper filter plate 641 and the medium pressure filter plate 642 and the lower filter plate 643 to interact with each other to perform filter pressing and dehydration on the first and second papermaking sludge layers as described above for the set 40 seconds. The filter press hydraulic press 6 and the belt distributor 31 , the filter belt tractor 5 repeats the above-mentioned actions to complete the distribution of the third papermaking sludge layer, and transports the third papermaking sludge layer to the first filter press station. Simultaneously, the second papermaking sludge layer is transported to the second filter press station, and the first papermaking sludge layer is transported to the third filter press station. The filter press hydraulic press 6 performs a downward pressing action for the third time, and the filter press slide 63 drives the upper filter press plate 641, the middle filter press plate 642 and the lower filter press plate 643 to interact with each other to perform filter pressing and dehydration on the first, second and third papermaking sludge layers as described above for the set 40 seconds. At this point, the first papermaking sludge layer has completed the set total filter pressing time of 120 seconds.

[0107] S4 unloading: When the first papermaking sludge layer completes the set three times of 120 seconds of filtration in total and the moisture content is reduced to the target value of 45%, the filter belt tractor 5 and the filter belt 4 are transported upward to leave the filtration station of the upper filter plate 641 and the middle filter plate 642, and the upper filter belt 41 and the lower filter belt 42 are separated. The first papermaking sludge layer is filtered into sheets with a moisture content of 45%. When the filter belt 4 runs to the unloading position, the sheets are unloaded from the upper filter belt 41 and the lower filter belt 42 respectively to complete the unloading. This cycle is repeated, and the system completes the filtration and dehydration of one papermaking sludge layer after another, thereby realizing the filtration and dehydration operation function of the papermaking sludge.

[0108] Another dehydration method of the spatial multi-layer ultra-high pressure belt dehydration system of the present invention performs filter pressing and dehydration on sugar filter mud with a moisture content of 65%. The target moisture content of the sugar filter mud after dehydration is 50%. The specific embodiment differs from the previous embodiment only in that:

[0109] In view of the fact that the sugar filter mud has high viscosity and requires longer filtration and dehydration time, there are two filter press hydraulic presses 6 in S3. The sugar filter mud is first pre-filtered three times, each time for 40 seconds, and at a pressure of 1 MPa on the first filter press hydraulic press 6 after the belt feeder 31. When the moisture content of the sugar filter mud has been reduced to a certain extent and the fluidity has been reduced and it has basically solidified, it enters the second filter press hydraulic press 6 for ultra-high pressure filtration three times, each time for 40 seconds, and at a pressure of 4 MPa, to achieve the target value of 50% moisture content of the sugar filter mud after dehydration;

[0110] In order to solve the problem that the sugar filter mud is easy to leak and escape from both sides of the filter belt 4 in the moving direction of the filter press station of the filter press plate 64 at the beginning of the filter press, in S3, the material blocking mechanism 9 located on both sides of the filter press plate 64 of the first filter press hydraulic press 6 moves downward to press the filter belt 4 downward, and then the filter press hydraulic press 6 squeezes the sugar filter mud layer downward;

[0111] In order to solve the problem of slow flow of sugar-containing filtrate during filter pressing of sugar filter mud, and to enable the filtrate to be discharged faster and more thoroughly, and to further improve the filter pressing and dehydration effect, the water in the sugar filter mud in S3 flows out of the surface under pressure and passes through the upper filter belt 41 and the lower filter belt 42 and the filter plate absorbent pad 646, the filter plate porous panel 645, and the water guide groove 644 respectively and successively, and then enters the filter plate outlet pipe 647, and is sucked out by the vacuum negative pressure device 10 connected to the filter plate outlet pipe 647.

[0112] 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.

Claims

1. A spatial multi-layer ultra-high pressure belt dehydration system, characterized by: It includes a main frame, a material distribution feeding device, a material distribution device, a filter belt, a filter belt tractor, a filter press hydraulic press, a hydraulic station and a controller; the material distribution feeding device, the material distribution device, the filter belt tractor and the filter press hydraulic press are connected and installed on the main frame; the output end of the material distribution feeding device is connected and installed above the material distribution device; The filter belt comprises an upper filter belt and a lower filter belt, and the upper filter belt and the lower filter belt are respectively wound on a filter belt tractor; The filter press hydraulic press is connected to the hydraulic station through a hydraulic oil pipe; the material feeding device, material distribution device, filter belt traction machine, filter press hydraulic press, hydraulic station and controller are electrically connected; The filter press hydraulic press includes a filter press cylinder, a filter press cylinder seat, a filter press slide, a filter press plate, a lifting linkage ring, a filter press guide post, and a filter press workbench. The filter press workbench is connected and installed directly above the main frame. The filter press guide post is connected from top to bottom between the filter press cylinder seat, the filter press slide, the filter press plate, and the filter press workbench. The filter press cylinder is connected and installed on the filter press cylinder seat. The upper end surface of the filter press slide is connected and installed on the piston rod of the filter press cylinder. The filter press plate includes an upper filter press plate, a middle filter press plate and a lower filter press plate, wherein the upper filter press plate is connected and installed on the lower end surface of the filter press slide, the lower filter press plate is connected and installed above the filter press workbench, and the middle filter press plate is connected and installed on the filter press guide column between the upper filter press plate and the lower filter press plate; a lifting linkage ring is set between the upper filter press plate and the middle filter press plate, and the upper filter belt and the lower filter belt pass through between the upper filter press plate, the middle filter press plate and the lower filter press plate.

2. The spatial multi-layer ultra-high pressure belt dehydration system according to claim 1, characterized in that: The upper and lower surfaces of the filter press plate are provided with filter plate water guide grooves; a filter plate porous panel is installed above the filter plate water guide groove; and a filter plate water outlet pipe is connected and installed on the end surface of the filter plate water guide groove.

3. The spatial multi-layer ultra-high pressure belt dehydration system according to any one of claims 1-2, characterized in that: It also includes a filter press plate water absorbent pad; the filter press plate water absorbent pad is connected and installed on the surface of the filter plate porous panel.

4. The spatial multi-layer ultra-high pressure belt dehydration system according to claim 1, characterized in that: The filter press hydraulic press is installed in series in one or more units.

5. The spatial multi-layer ultra-high pressure belt dehydration system according to claim 1, characterized in that: It also includes a material blocking mechanism; the material blocking mechanism includes a material blocking strip and a material blocking cylinder; the material blocking strip is connected and installed on the piston rod of the material blocking cylinder, and the material blocking strip is located on both sides of the filter press plate and the filter belt in the running direction; the material blocking cylinder is connected to the hydraulic station through an oil pipe.

6. The spatial multi-layer ultra-high pressure belt dehydration system according to any one of claims 1-2, characterized in that: A vacuum negative pressure device is connected and installed on the filter plate water outlet pipe.

7. The spatial multi-layer ultra-high pressure belt dehydration system according to claim 1, characterized in that: The utility model also comprises a filter belt guiding mechanism, which is connected and installed on the main frame on both sides of the filter belt.

8. The spatial multi-layer ultra-high pressure belt dehydration system according to claim 1, characterized in that: The material distribution feeding device is a belt feeder or a screw feeder, a screw pump feeder, or a plunger pump feeder; the material distribution device is a belt distribution machine or a screw distribution machine, and the output end of the material distribution device is located on the lower filter belt of the filter belt tractor.

9. The spatial multi-layer ultra-high pressure belt dehydration system according to claim 1, characterized in that: It also includes a material flake crushing device; the material flake crushing device is connected and installed below the discharge end of the filter belt tractor; The material breaking device is a screw conveyor or a double-shaft shredder, a chain crusher, or a hammer / blade crusher.

10. The spatial multi-layer ultra-high pressure belt dehydration system according to claim 1, characterized in that: It also includes a material dosing and stirring device; the material dosing and stirring device is connected and installed at the front end of the material feeding device.

Images