Deep dehydration device for coal gasification slag

Abstract

A deep dehydration device for coal gasification slag relates to the technical field of coal chemical industry. The device comprises a workbench, a lower die assembly, an upper die pushing assembly and an upper die assembly. Wherein the lower die assembly is arranged on the workbench, a cavity for placing gas slag is formed in the lower die assembly, and a feeding port communicated with the cavity is formed in one side of the lower die assembly; the upper die pushing assembly is arranged above the lower die assembly; the output end of the upper die pushing assembly faces the lower die assembly. The upper die assembly is arranged at the output end of the upper die pushing assembly. The upper die pushing assembly drives the upper die assembly to move downwards to be matched with the lower die assembly to extrude the gasified slag so that the gasified slag can be dehydrated. By adopting the technical scheme, the dehydration device has the advantages of high dehydration efficiency, good dehydration effect, energy conservation and environmental protection.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal chemical technology field, concretely relates to a coal gasification slag depth dehydration device. BACKGROUND

[0002] Coal gasification technology is the core technology of clean conversion and efficient utilization of coal in coal chemical industry. In the coal gasification process, coal gasification slag is inevitably produced. Because coal gasification slag can cause great harm to the natural environment and human body, effective measures need to be taken to treat coal gasification slag. At present, the method for treating coal gasification slag is generally landfill treatment; or the method of high-temperature baking, vacuum dehydration or centrifugal dehydration is used to reduce the moisture content of coal gasification slag, so that the coal gasification slag can be used again. However, in the treatment process, the method of landfill treatment not only occupies a large amount of land, but also may pollute groundwater; and the dehydration methods of high-temperature baking, vacuum dehydration and the like have low treatment efficiency, high treatment cost and poor dehydration effect. SUMMARY

[0003] The utility model aims at the defects and deficiencies of prior art, and provides a coal gasification slag depth dehydration device, which has the advantages of efficient dehydration, good dehydration effect and energy saving and environmental protection.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of a coal gasification slag depth dehydration device, which comprises:

[0005] A workbench;

[0006] A lower mold assembly is arranged on the workbench, a cavity for placing gasification slag is arranged in the lower mold assembly, and a feeding port communicating with the cavity is arranged on one side of the lower mold assembly;

[0007] An upper mold pushing assembly is arranged above the lower mold assembly, the output end of the upper mold pushing assembly faces the lower mold assembly; and

[0008] An upper mold assembly is arranged at the output end of the upper mold pushing assembly;

[0009] The upper mold pushing assembly drives the upper mold assembly to move downward and cooperate with the lower mold assembly to extrude the gasification slag, so as to dehydrate the gasification slag.

[0010] The utility model is further provided, and the working pressure of the upper mold pushing assembly acting on the gasification slag through the upper mold assembly is not more than 80MPa.

[0011] The utility model is further provided, and the coal gasification slag depth dehydration device further comprises a filter screen assembly arranged between the lower mold assembly and the workbench; the filter screen assembly comprises:

[0012] A bottom plate is provided with a groove on the top side; a plurality of parallel and spaced support bars are arranged in the groove; and a water outlet is arranged on the side of the bottom plate and communicates with the groove.

[0013] A water leakage plate is arranged on the upper side of the bottom plate; the water leakage plate is provided with a plurality of water leakage holes.

[0014] A first water filtering net is arranged on the upper side of the water leakage plate; the first water filtering net is provided with a plurality of first water filtering holes in the form of horizontal strips; and

[0015] A second water filtering net is arranged on the upper side of the first water filtering net; the second water filtering net is provided with a plurality of second water filtering holes in the form of vertical strips.

[0016] The upper die assembly is further provided with a first water storage groove on the outer periphery; a first water outlet is arranged on one end of the upper die assembly and communicates with the first water storage groove; and an upper die water pump is arranged on the first water storage groove and communicates with the first water storage groove; the first water storage groove, the first water outlet and the upper die water pump cooperate to discharge the wastewater of the extruded and gasified slag.

[0017] The lower die assembly is further provided with a second water storage groove on the outer periphery; a second water outlet is arranged on the side wall of the lower die assembly and communicates with the second water storage groove and the inside of the lower die assembly; and a lower die water pump is arranged on one side of the second water storage groove and communicates with the second water storage groove; the second water storage groove, the second water outlet and the lower die water pump cooperate to discharge the water in the lower die assembly.

[0018] The lower die assembly is further provided with a hollow structure.

[0019] The coal gasification slag deep dehydration device further comprises a lower die pushing assembly arranged on the side of the workbench and connected to the lower die assembly at one end; and the lower die pushing assembly is used to drive the lower die assembly to move upwards or downwards.

[0020] The lower die pushing assembly comprises a lower die pushing member arranged on the side of the workbench and having an upwardly extending telescopic end, a fixed sliding plate sleeved on the outer periphery of the lower die assembly and connected to the telescopic end of the lower die pushing member, and a sliding plate guide column arranged on the side of the lower die pushing member away from the workbench and having an upwardly extending end; one end of the fixed sliding plate is sleeved on the sliding plate guide column; and the telescopic end of the lower die pushing member pushes or pulls the fixed sliding plate upwards or downwards to drive the lower die assembly to move upwards or downwards along the sliding plate guide column.

[0021] The utility model further sets up, the coal gasification residue depth dehydration device still includes: the push material subassembly of setting in the one side of the workstation, the output end of push material subassembly faces the top surface of the workstation, when gasification residue dehydration is completed, the lower mould pushes the subassembly and drives the lower mould subassembly upward motion, the gasification residue after dehydration separates the lower mould subassembly and stays on the workstation, the output end of push material subassembly faces the workstation direction movement, to push the gasification residue after dehydration and leave the workstation.

[0022] The utility model further sets up, the upper mould pushing subassembly includes: set up the upper mould drive piece of the lower side of the output end in the lower mould subassembly, set up the first upper mould pushing piece of the both sides of the upper mould drive piece, set up the second upper mould pushing piece of the lower end of the upper mould drive piece, and set up the upper mould fixed platform for the assembly of the upper mould subassembly in the first upper mould pushing piece lower end and the second upper mould pushing piece lower end, the telescopic end of first upper mould pushing piece and second upper mould pushing piece all faces down.

[0023] After adopting above technical scheme, the utility model has the beneficial effects that: in the utility model, the upper mould pushing subassembly drives the upper mould subassembly downward motion and the lower mould subassembly cooperation extrusion gasification residue to be dehydrated, relative to traditional high temperature roasting and centrifugal dehydration etc., the upper mould pushing subassembly pushes the upper mould subassembly and the lower mould subassembly cooperation extrusion mode directly to gasification residue and exert pressure, carries out physical cold pressing to gasification residue.Pressure can quickly extrude the water content in gasification residue, especially for those granules between a large number of free water and partial pore water gasification residue, extrusion can make water content be discharged in a large quantity in short time, and the dehydration efficiency is relatively high, to high efficiency dehydration and dehydration effect is good, can also avoid producing other pollutants, avoid polluting the air, energy saving and environmental protection. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description only is some embodiments of the utility model, for ordinary skilled person in the art comes, under the premise of not paying the creativity labor intensity, can also obtain other drawings according to these drawings.

[0025] Figure 1 It is the structure schematic diagram of the utility model;

[0026] Figure 2 It is the structure schematic diagram of the utility model feed completion state;

[0027] Figure 3 It is the structure schematic diagram of the utility model extrusion gasification residue state;

[0028] Figure 4 is a structural schematic view of the upper die assembly, the upper die pushing assembly, the lower die assembly and the lower die pushing assembly in the utility model in the unloading position;

[0029] Figure 5 is a structural schematic view of another perspective of the utility model;

[0030] Figure 6 is a structural schematic view of the filter screen assembly;

[0031] Figure 7 is the A-A sectional view corresponding to Figure 6 ; and

[0032] Figure 8 is an exploded structural schematic view of the filter screen assembly.

[0033] The figure mark explanation: 100, workbench; 200, lower die assembly; 210, lower die annular barrel; 220, lower die surrounding material cylinder; 221, feeding port; 300, lower die pushing assembly; 310, lower die pushing piece; 320, fixed sliding plate; 330, sliding plate guide column; 400, upper die pushing assembly; 410, upper die driving piece; 420, first upper die pushing piece; 430, second upper die pushing piece; 440, upper die fixed platform; 500, upper die assembly; 510, upper die main body; 600, filter screen assembly; 610, bottom plate; 611, groove; 612, support strip; 613, water outlet; 620, water leakage plate; 621, water leakage hole; 630, first water filter screen; 631, first water filter hole; 640, second water filter screen; 641, second water filter hole; 710, first water storage groove; 720, first drainage hole; 730, upper die water suction pipe; 740, third water filter screen; 810, second water storage groove; 820, second drainage hole; 830, lower die drainage pipe; 840, fourth water filter screen; 900, pushing assembly; 910, pushing pushing piece; 1000, feeding assembly; 1100, feeding channel; 1200, feeding hopper; 1300, feeding pushing piece; 2000, gasification slag. DETAILED DESCRIPTION

[0034] The utility model will be further explained in detail below in combination with the drawings.

[0035] The specific embodiment is only the explanation of the utility model, and it is not the limitation of the utility model, and the person skilled in the art can make the modification without the creative contribution according to the need after reading the present specification, but as long as in the utility model's right claim range all receive the patent law's protection.

[0036] The embodiment relates to a coal gasification slag deep dewatering device, and refers to Figures 1-3, including: a workbench 100, a lower mold assembly 200, an upper mold pushing assembly 400 and an upper mold assembly 500. Wherein the workbench 100 is used for placing gasified slag; the lower mold assembly 200 is arranged on the workbench 100, the lower mold assembly 200 is provided with a cavity for placing gasified slag, and the lower mold assembly 200 is provided with a feeding port 221 communicating with the cavity. The upper mold pushing assembly 400 is arranged above the lower mold assembly 200; the output end of the upper mold pushing assembly 400 faces the lower mold assembly 200. The upper mold assembly 500 is arranged at the output end of the upper mold pushing assembly 400; the upper mold pushing assembly 400 drives the upper mold assembly 500 to cooperate with the lower mold assembly 200 to extrude the gasified slag 2000 so as to dehydrate the gasified slag 2000.

[0037] Compared with the traditional high-temperature baking and centrifugal dehydration, the pressure of the upper mold pushing assembly 400, the upper mold assembly 500 and the lower mold assembly 200 on the gasified slag 2000 to be dehydrated can quickly extrude the water in the gasified slag 2000, especially for the gasified slag 2000 with a large amount of free water and partial pore water between particles, the extrusion can make the water be discharged in a short time, the dehydration efficiency is relatively high, which ensures the efficient dehydration and good dehydration effect. At the same time, the coal gasification slag deep dehydration device can quickly dehydrate in a short time through physical cold pressing at room temperature, increase the comprehensive density of the gasified slag 2000 and improve the energy density in unit volume of the gasified slag 2000. In the pressing process, there is no additional energy material loss, which ensures the feasibility of secondary combustion of the gasified slag 2000, avoids the generation of additional pollutants, avoids air pollution and ensures energy saving and environmental protection in the treatment process.

[0038] In the embodiment, reference is made to Figure 3 and Figure 4The upper die pushing assembly 400 comprises an upper die driving member 410, a first upper die pushing member 420, a second upper die pushing member 430, and an upper die fixing platform 440. The upper die driving member 410 is arranged above the lower die assembly 200, and the output end thereof faces downward. The first upper die pushing member 420 is arranged on both sides of the upper die driving member 410, and the second upper die pushing member 430 is arranged at the lower end of the upper die driving member 410. The telescopic ends of the first upper die pushing member 420 and the second upper die pushing member 430 both face downward. The upper die fixing platform 440 is arranged at the lower end of the first upper die pushing member 420 and the lower end of the second upper die pushing member 430, and is used for assembling the upper die assembly 500. The upper die driving member 410, the first upper die pushing member 420, the second upper die pushing member 430, and the upper die fixing platform 440 cooperate to drive or lead the upper die assembly 500 to move upward or downward, and at the same time, the upper die assembly 500 is used for exerting pressure on the gasified slag 2000 to be dewatered. Further, the upper die assembly 500 comprises an upper die main body 510 assembled on the side of the upper die fixing platform 440 facing the lower die assembly 200. The upper die main body 510 is used for cooperating with the lower die annular barrel 210 and the lower die surrounding material cylinder 220 to physically extrude and dewater the gasified slag 2000, and at the same time, the upper die main body 510 can also be used for shaping the dewatered gasified slag 2000. In the embodiment, the working pressure of the upper die pushing assembly 400 leading the upper die assembly 500 acting on the gasified slag 2000 is not more than 80 MPa. In this pressure range, the honeycomb hole structure of the gasified slag 2000 mixture particles is just in the most easily broken pressure range, and the water sealed in the holes and gaps can be released. If the pressure continues to increase, the large chain molecular group fragments after breaking will recombine together under the action of superhigh pressure, and the water that has not flowed out in time will be sealed between the gaps of the large chain molecular group and cannot be dewatered, and the superhigh pressure dewatering loses its effect. The working pressure range can achieve a better dewatering effect. In the embodiment, the working pressure of the upper die pushing assembly 400 leading the upper die assembly 500 acting on the gasified slag 2000 is 80 MPa. In some embodiments, the working pressure of the upper die pushing assembly 400 leading the upper die assembly 500 acting on the gasified slag 2000 can also be 75 MPa, 76 MPa, 77 MPa, 78 MPa, and 79 MPa. Only the working pressure of the upper die pushing assembly 400 leading the upper die assembly 500 acting on the gasified slag 2000 is not more than 80 MPa, which is not specifically limited here. Preferably, the working pressure of the upper die pushing assembly 400 leading the upper die assembly 500 acting on the gasified slag 2000 is 80 MPa.

[0039] In the embodiment, the upper die driving member 410 is arranged as a main oil cylinder, the first upper die pushing member 420 is arranged as a secondary oil cylinder, and two first upper die pushing members 420 are arranged to ensure that the guiding force and the driving force applied to the upper die fixed platform 440 are balanced, and the second upper die pushing member 430 is arranged as an oil cylinder piston. In some embodiments, the upper die driving member 410, the first upper die pushing member 420 and the second upper die pushing member 430 can all be hydraulic cylinders.

[0040] In the embodiment, the lower die assembly 200 is arranged as a hollow structure. Referring to Figure 3 and Figure 4 , the lower die assembly 200 comprises a lower die annular barrel 210 arranged on the workbench 100 and a lower die surrounding material cylinder 220 assembled on the lower die annular barrel 210, and a feeding port 221 is arranged on one side of the lower die surrounding material cylinder 220. The lower die surrounding material cylinder 220 is also annular. The design of the lower die annular barrel 210 and the lower die surrounding material cylinder 220 is beneficial to the shaping of the gasified slag 2000 to be dewatered, which can not only uniformly dewater the gasified slag 2000, but also ensure that the particle shape and distribution of the gasified slag 2000 can be kept in a good state after dewatering, which is beneficial to the subsequent processing or utilization.

[0041] Further, referring to Figure 3 and Figure 4The coal gasification slag deep dewatering device further comprises a lower mold pushing assembly 300 arranged at the periphery of the workbench 100. One end of the lower mold pushing assembly 300 is connected with the lower mold assembly 200, and the lower mold pushing assembly 300 is used to drive the lower mold assembly 200 to move upward or downward. The lower mold pushing assembly 300 comprises a lower mold pushing member 310, a fixed sliding plate 320 and a sliding plate guide column 330. The lower mold pushing member 310 is arranged at the periphery of the workbench 100 and has a telescopic end facing upward. The fixed sliding plate 320 is sleeved at the periphery of the lower mold assembly 200 and is connected with the telescopic end of the lower mold pushing member 310. In addition, one end of the fixed sliding plate 320 is sleeved on the sliding plate guide column 330. The sliding plate guide column 330 is arranged at the side of the lower mold pushing member 310 away from the workbench 100 and has an end extending upward. The telescopic end of the lower mold pushing member 310 pushes or pulls the fixed sliding plate 320 downward to drive the lower mold assembly 200 to move upward or downward along the sliding plate guide column 330, so that the dewatered gasification slag 2000 is demolded and left on the workbench 100. In the embodiment, the lower mold pushing member 310 and the sliding plate guide column 330 are both arranged in two and symmetrically, so as to avoid the inclination and jam of the lower mold assembly 200 due to the excessive pushing force of the lower mold pushing member 310 on one side. Similarly, the two symmetrically arranged sliding plate guide columns 330 can ensure that the support force and the guiding force on both sides of the fixed sliding plate 320 are the same during the sliding of the fixed sliding plate 320 along the sliding plate guide column 330, so that the fixed sliding plate 320 can slide up and down stably and help the whole device to keep stable structure during operation. In the embodiment, the lower mold pushing member 310 is an oil cylinder. In some embodiments, the lower mold pushing member 310 can also be a hydraulic cylinder.

[0042] In the embodiment, the lower mold pushing member 310 is an oil cylinder. Figure 5The coal gasification slag deep dewatering device further comprises a pushing assembly 900 arranged on one side of the workbench 100. An output end of the pushing assembly 900 faces the top surface of the workbench 100. After the dewatering of the gasification slag 2000 is completed, the lower die pushing assembly 300 drives the lower die assembly 200 to move upward, and the dewatered gasification slag 2000 is separated from the lower die assembly 200 and left on the workbench 100. The output end of the pushing assembly 900 moves toward the workbench 100 to push the dewatered gasification slag 2000 away from the workbench 100. Specifically, after the dewatering of the gasification slag 2000 is completed, the lower die pushing assembly 300 drives the lower die assembly 200 to move upward. Since the lower die assembly 200 is a hollow structure, the dewatered gasification slag 2000 is left on the workbench 100. The lower die pushing assembly 300 drives the lower die assembly 200 to move upward until the lowest height line of the bottom surface of the lower die assembly 200 is higher than the highest height line of the pushing assembly 900, and then the upward movement is stopped. At the same time, the upper die pushing assembly 400 drives the upper die assembly 500 to rise to the unloading position. At this time, the output end of the pushing assembly 900 moves toward the workbench 100 to push the dewatered gasification slag 2000 away from the workbench 100, so as to avoid affecting the feeding and dewatering operation of the next round and ensure that the entire dewatering process of the gasification slag 2000 can be efficiently and continuously completed. Then, the upper die pushing assembly 400, the upper die pushing member, the lower die pushing assembly 300 and the lower die assembly 200 are reset to the initial feeding position. In the embodiment, the pushing assembly 900 comprises a pushing member 910 arranged on the lower side of the feeding assembly 1000. The telescopic end of the pushing member faces the workbench 100, so as to push the dewatered gasification slag 2000 away from the workbench 100 and ensure the smoothness and continuity of the dewatering process. In the embodiment, the pushing member 910 is an oil cylinder. In some embodiments, the pushing member 910 is a hydraulic cylinder.

[0043] In the embodiment, the pushing assembly 900 comprises a pushing member 910 arranged on the lower side of the feeding assembly 1000. The telescopic end of the pushing member faces the workbench 100, so as to push the dewatered gasification slag 2000 away from the workbench 100 and ensure the smoothness and continuity of the dewatering process. In the embodiment, the pushing member 910 is an oil cylinder. In some embodiments, the pushing member 910 is a hydraulic cylinder. Figure 4 and Figures 6-8The coal gasification slag deep dewatering device further comprises a filter screen assembly 600 arranged between the lower die assembly 200 and the workbench 100. The filter screen assembly 600 is used to support the gasification slag 2000 to be dewatered on one hand, and facilitate the gasification slag 2000 to be dewatered to be naturally filtered under the action of gravity on the other hand. Specifically, the filter screen assembly 600 comprises a bottom plate 610, a water leakage plate 620, a first water filter screen 630 and a second water filter screen 640. The top side of the bottom plate 610 is provided with a downwardly recessed groove 611; a plurality of parallel and spaced support bars 612 are arranged in the groove 611, and a water outlet 613 communicating with the groove 611 is formed in the peripheral side of the bottom plate 610. The support bars 612 are arranged in a spaced manner to facilitate the filtered wastewater to flow to the water outlet 613 for discharge, avoiding the accumulation of wastewater in the groove 611 of the bottom plate 610, and the support bars 612 also serve to increase the structural strength of the bottom plate 610 to facilitate the support of the gasification slag 2000 to be dewatered. The water leakage plate 620 is arranged on the upper side of the bottom plate 610; the water leakage plate 620 is provided with a plurality of water leakage holes 621. The first water filter screen 630 is arranged on the upper side of the water leakage plate 620; the first water filter screen 630 is provided with a plurality of first water filter holes 631 in the form of horizontal strips. The second water filter screen 640 is arranged on the upper side of the first water filter screen 630; the second water filter screen 640 is provided with a plurality of second water filter holes 641 in the form of vertical strips. The bottom plate 610, the water leakage plate 620, the first water filter screen 630 and the second water filter screen 640 jointly constitute a multi-layer filtration system, the first water filter holes 631 and the second water filter holes 641 intercept most of the fixed impurities from different directions, and then the wastewater is filtered again through the water leakage holes 621 of the water leakage plate 620, and finally the water is discharged through the water outlet 613 of the bottom plate 610. The multi-layer structure can effectively improve the filtering effect and ensure the dewatering effect. In addition, the first water filter holes 631 are in the form of horizontal strips, and the second water filter holes 641 are in the form of vertical strips, the first water filter screen 630 and the second water filter screen 640 are arranged in a cross manner to form square water seepage holes, thereby enhancing the filtering effect. In the embodiment, the water leakage holes 621 are in the form of circles. In the embodiment, the water leakage plate 620 is provided with a downwardly recessed water filter groove on the top side, which facilitates the positioning of the gasification slag 2000 to be dewatered and guides the wastewater into the groove 611 of the bottom plate 610, thereby facilitating the discharge of the wastewater from the water outlet 613.

[0044] In the embodiment, the water outlet 613 is provided with a plurality of water outlets. In some embodiments, the water outlet 613 can also be provided with one water outlet. In some embodiments, the water leakage holes 621 can also be in the form of squares, long strips or various other forms. In some embodiments, the first water filter holes 631 can also be in the form of vertical strips, and the second water filter holes 641 can also be in the form of horizontal strips. In some embodiments, the first water filter screen 630 and the second water filter screen 640 are provided with a plurality of water filter screens to form a multi-layer filter screen structure.

[0045] In the embodiment, the bottom plate 610 is provided with a plurality of downwardly recessed grooves 611, and a plurality of support bars 612 are arranged in each groove 611. In some embodiments, the bottom plate 610 can also be provided with one downwardly recessed groove 611, and a plurality of support bars 612 can also be arranged in the groove 611. Figures 2-4The upper die assembly 500 is sleeved with a first water storage tank 710 on the outer periphery side, and the end of the upper die assembly 500 facing the lower die assembly 200 is provided with a first drain hole 720 communicating with the first water storage tank 710. The first water storage tank 710 is provided with an upper die water suction pipe 730 having one end communicating with the first water storage tank 710. The first water storage tank 710, the first drain hole 720 and the upper die water suction pipe 730 cooperate to drain the wastewater generated by the upper die assembly 500 and the lower die assembly 200 in the process of extruding the gasified slag 2000. Since the wastewater will splash in all directions during the extrusion process of the gasified slag 2000, when the upper die assembly 500 contacts the gasified slag 2000 to be dewatered, the upper die water suction pipe 730 sucks water outward to guide the water in the first water storage tank 710 outward. At the same time, since the first drain hole 720 communicates with the first water storage tank 710, the wastewater can flow from the extrusion area of the upper die assembly 500 contacting the gasified slag 2000 to be dewatered to the first water storage tank 710 through the first drain hole 720, and cannot accumulate between the upper die assembly 500 and the lower die assembly 200, thereby reducing the interference of the wastewater on the extrusion work of the mold and avoiding pollution to the working environment, and ensuring the continuity and stability of the extrusion process. Further, the third water filter net 740 is arranged at the end of the upper die assembly 500 facing the lower die assembly 200 and corresponding to the position of the first drain hole 720, which facilitates filtering the gasified slag 2000 and ensures the overall dewatering effect of the gasified slag 2000. In this embodiment, the third water filter net 740 is provided with one, and the first drain hole 720 is provided with two. In some embodiments, the third water filter net 740 can also be provided with multiple, and the first drain hole 720 can also be provided with four.

[0046] In this embodiment, with reference to Figures 2-4 , the lower die assembly 200 is sleeved with a second water storage tank 810 on the outer periphery side, and the sidewall of the lower die assembly 200 is provided with a second drain hole 820 communicating with the second water storage tank 810 and the inside of the lower die assembly 200. One side of the second water storage tank 810 is provided with a lower die water discharge pipe 830 having one end communicating with the second water storage tank 810. The second water storage tank 810, the second drain hole 820 and the lower die water discharge pipe 830 cooperate to guide the water in the lower die assembly 200 out. The second drain hole 820 communicates the second water storage tank 810 and the inside of the lower die assembly 200, so that the wastewater generated by the gasified slag 2000 in the process of being extruded by the upper die pushing assembly 400 and the upper die assembly 500 cooperating with the lower die assembly 200 can be guided out from the second drain hole 820 to the second water storage tank 810 in real time, and then discharged through the lower die water discharge pipe 830, thereby ensuring the continuity of the process of extruding the gasified slag 2000. Further, the fourth water filter net 840 is arranged at the position corresponding to the second drain hole 820 in the lower die assembly 200, which facilitates filtering the gasified slag 2000 and ensures the overall dewatering effect of the gasified slag 2000. In this embodiment, the second drain hole 820 is provided with multiple to facilitate accelerating the drainage.

[0047] In the embodiment, the design of the first water storage tank 710, the first drain hole 720, the first drain pipe, the second water storage tank 810, the second drain hole 820, the second drain pipe and the filter screen assembly 600 ensures that the wastewater can be timely discharged during the extrusion and gasification of the slag 2000, so as to avoid the accumulation of the wastewater affecting the dehydration effect.

[0048] In the embodiment, the coal gasification slag deep dehydration device further comprises a feeding assembly 1000 in communication with the feeding port 221. Figure 5 Specifically, the feeding assembly 1000 comprises a feeding channel 1100, a feeding hopper 1200 and a feeding pusher 1300; the feeding channel 1100 is in communication with the feeding port 221; one end of the feeding hopper 1200 is provided as an open structure for the gasification slag 2000 to be dehydrated to enter, and the other end is in communication with the feeding channel 1100; the feeding pusher 1300 is located on the same horizontal line as the feeding channel 1100, and the output end of the feeding pusher 1300 extends into the feeding channel 1100 to push the gasification slag 2000 to be dehydrated to the feeding port 221. The feeding channel 1100 is beneficial to stable feeding, and the feeding pusher 1300 ensures that the gasification slag 2000 can smoothly enter the lower die assembly 200 through the feeding port 221.

[0049] The above is only used to illustrate the technical scheme of the present application, but not limit the present application. Other modifications or equivalent replacements to the technical scheme of the present application made by those skilled in the art should be covered in the scope of the claims of the present application.

Claims

1. A coal gasification slag deep dewatering device, characterized by, The application relates to a coal gasification slag deep dehydration device. The device comprises the following parts: a workbench (100); a lower mold assembly (200) arranged on the workbench (100), wherein a cavity for placing gasification slag (2000) is arranged in the lower mold assembly (200), and a feeding port (221) communicating with the cavity is arranged on one side of the lower mold assembly (200); an upper mold pushing assembly (400) arranged above the lower mold assembly (200), wherein the output end of the upper mold pushing assembly (400) faces the lower mold assembly (200); and an upper mold assembly (500) arranged on the output end of the upper mold pushing assembly (400).

2. The coal gasification slag deep dewatering device according to claim 1, characterized in that, The upper mold pushing assembly (400) drives the upper mold assembly (500) to move downward and press the gasification slag (2000) in cooperation with the lower mold assembly (200) to dehydrate the gasification slag (2000).

3. The coal gasification slag deep dewatering device according to claim 1, characterized in that, The working pressure of the upper mold pushing assembly (400) on the gasification slag (2000) is not more than 80 MPa. The coal gasification slag deep dehydration device further comprises a filter screen assembly (600) arranged between the lower mold assembly (200) and the workbench (100), wherein the filter screen assembly (600) comprises: a bottom plate (610), wherein a groove (611) is arranged on the top side of the bottom plate (610), a plurality of parallel and spaced support strips (612) are arranged in the groove (611), and a water outlet (613) communicating with the groove (611) is arranged on the side of the bottom plate (610); a water leakage plate (620) arranged on the upper side of the bottom plate (610), wherein the water leakage plate (620) is provided with a plurality of water leakage holes (621); a first water filter screen (630) arranged on the upper side of the water leakage plate (620), wherein a plurality of first water filter holes (631) in the form of horizontal strips are arranged on the first water filter screen (630); and 4. The coal gasification slag deep dewatering device according to claim 1, characterized in that, a second water filter screen (640) arranged on the upper side of the first water filter screen (630), wherein a plurality of second water filter holes (641) in the form of vertical strips are arranged on the second water filter screen (640). A first water storage groove (710) is arranged on the outer periphery of the upper mold assembly (500), a first water drainage hole (720) communicating with the first water storage groove (710) is arranged on the end of the upper mold assembly (500) facing the lower mold assembly (200), and an upper mold water pump (730) with one end communicating with the first water storage groove (710) is arranged on the first water storage groove (710); the first water storage groove (710), the first water drainage hole (720) and the upper mold water pump (730) can drain the wastewater generated when the upper mold assembly (500) and the lower mold assembly (200) press the gasification slag (2000).

5. The coal gasification slag deep dewatering device according to claim 1, characterized in that, The lower mold assembly (200) is sleeved with a second water storage groove (810) on the outer periphery, and a second drainage hole (820) is formed in the sidewall of the lower mold assembly (200) and communicates the second water storage groove (810) with the inside of the lower mold assembly (200); one end of the second water storage groove (810) is provided with a lower mold drainage pipe (830) which communicates with the second water storage groove (810); the second water storage groove (810), the second drainage hole (820) and the lower mold drainage pipe (830) cooperate to guide the water in the lower mold assembly (200) out.

6. The coal gasification slag dewatering device according to claim 1, wherein The lower mold assembly (200) is provided in a hollow structure.

7. The coal gasification slag deep dewatering device according to claim 6, characterized in that, The coal gasification slag deep dewatering device further comprises a lower mold pushing assembly (300) provided on the periphery of the workbench (100) and connected to the lower mold assembly (200) at one end; the lower mold pushing assembly (300) is used to drive the lower mold assembly (200) to move upward or downward.

8. The coal gasification slag deep dewatering device according to claim 7, characterized in that, The lower mold pushing assembly (300) comprises a lower mold pushing member (310) provided on the periphery of the workbench (100) and having an upwardly extending telescopic end, a fixed sliding plate (320) sleeved on the outer periphery of the lower mold assembly (200) and connected to the telescopic end of the lower mold pushing member (310), and a sliding plate guide column (330) provided on the side of the lower mold pushing member (310) away from the workbench (100) and extending upward at one end; one end of the fixed sliding plate (320) is sleeved on the sliding plate guide column (330); the telescopic end of the lower mold pushing member (310) pushes or pulls the fixed sliding plate (320) upward or downward to drive the lower mold assembly (200) to move upward or downward along the sliding plate guide column (330).

9. The coal gasification slag deep dewatering device according to claim 7 or 8, characterized in that, The coal gasification slag deep dewatering device further comprises a material pushing assembly (900) provided on one side of the workbench (100) and having an output end directed toward the top surface of the workbench (100); after the dewatering of the gasification slag (2000) is completed, the lower mold pushing assembly (300) drives the lower mold assembly (200) to move upward, and the dewatered gasification slag (2000) is left on the workbench (100) and separated from the lower mold assembly (200); the output end of the material pushing assembly (900) moves toward the workbench (100) to push the dewatered gasification slag (2000) away from the workbench (100).

10. The coal gasification slag dewatering device according to any one of claims 1-8, characterized in that, The upper die pushing assembly (400) comprises an upper die driving part (410) arranged above the lower die assembly (200) and having an output end facing downward, first upper die pushing parts (420) arranged on both sides of the upper die driving part (410), second upper die pushing parts (430) arranged at lower ends of the upper die driving part (410), and an upper die fixing platform (440) arranged at lower ends of the first upper die pushing parts (420) and the second upper die pushing parts (430) and used for assembling the upper die assembly (500); and the telescopic ends of the first upper die pushing parts (420) and the second upper die pushing parts (430) both face downward.

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