Lifting type coal slime gas pressurizing, filtering and dewatering device

Abstract

The utility model belongs to the technical field of filters, and particularly relates to a lifting type coal slime gas pressurizing, filtering and dehydrating device which comprises a top layer upper part, a dehydrating and filter-pressing tank, a bottom layer lower part and an independent sample chamber, a cavity is formed in the dehydrating and filter-pressing tank, and the independent sample chamber is located in the dehydrating and filter-pressing tank. Pressure is applied to slurry in the sample chamber through the pressure of discharged gas in the gas booster pump, so that solid-liquid separation is realized, filtrate flows out from a water outlet pipe arranged at the bottom layer in the filter pressing process, solids are left on filter paper, efficient dehydration test verification research on fine particles such as coal slime and coal series clay can be realized through gas filter pressing, and the filtering efficiency is improved; the four screws of the top cover and the bottom layer adopt different technologies and cover lifting design, can be easily turned upwards, and are convenient for putting in or taking out samples, so that the loading and unloading processes of the samples are greatly simplified, the operation time is shortened, and meanwhile, daily cleaning and maintenance are also convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of filter presses, in particular to a lifting type coal slime gas pressurized filtration and dehydration device. Background Technique

[0002] The improvement of the mechanization degree of coal mining has increased the proportion of fine coal slime, which poses challenges to coal processing and utilization. The characteristics of fine coal slime, such as high water content, large content of fine-grained materials, and containing more fine clay minerals, make its dehydration process complex and difficult. These characteristics not only affect the physical properties of coal slime, such as fluidity, but also directly affect its calorific value and the quality of the final product. The high water content of coal slime reduces its combustion efficiency, increases transportation costs, and has an adverse impact on the environment. Therefore, effective pressure filtration dehydration technology is crucial for improving the economic value and environmental friendliness of coal slime.

[0003] The coal slime dehydration and filtration devices in the laboratory are mainly used to simulate the coal slime dehydration process on an industrial scale for the purpose of researching and optimizing dehydration technology. These devices usually involve different technologies, such as vacuum filtration, centrifugal dehydration, or pressure filtration, etc. Vacuum filtration uses a vacuum pump to form a negative pressure below the filter to promote the water in the coal slime water to flow out through the filter medium (such as filter paper or filter cloth). However, its dehydration efficiency is low, especially for fine-particle coal slime, and the dehydration effect is not good; the filter cake may be relatively loose and not easy to form a tight structure; centrifugal dehydration uses the force of high-speed rotation to throw out the water in the coal slime water. However, the supernatant after centrifugation may still remain in the centrifuge tube and requires additional steps to remove it; for high-concentration or high-viscosity coal slime, the dehydration effect is limited. The existing gas pressurized dehydration and pressure filtration devices have the problems of being inconvenient for taking and placing samples and complex disassembly.

[0004] Therefore, a lifting type coal slime gas pressurized filtration and dehydration device is proposed to solve the above-mentioned problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a lifting type coal slime gas pressurized filtration and dehydration device to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A lifting type coal slime gas pressurized filtration and dehydration device, including the upper part of the top layer, a dehydration and pressure filtration tank, the lower part of the bottom layer, and an independent sample chamber. A cavity is opened inside the dehydration and pressure filtration tank, and the independent sample chamber is located inside the dehydration and pressure filtration tank;

[0007] The upper part of the top layer includes a left steam valve, a right steam valve, a pressure gauge, an upper cover and a lower cover. The upper cover is rotatably arranged at the upper end of the lower cover. A pressure gauge is fixed on the side wall of the upper cover. A left steam valve is fixed on the left side wall of the pressure gauge, and a right steam valve is fixed on the right side wall of the pressure gauge.

[0008] The lower part of the bottom layer includes bottom layer screws, a bottom cover, a water outlet pipe and support columns. There are four bottom layer screws in total, which are threadedly connected to the lower side wall of the dehydration and pressure filtration tank. The bottom cover is fixedly connected to the lower side wall of the dehydration and pressure filtration tank through the bottom layer screws. Uniformly arranged support columns are fixed on the lower side wall of the bottom cover, and the water outlet pipe is fixedly connected to the side wall of the bottom cover.

[0009] Preferably, the independent sample chamber fits the inner wall of the cavity inside the dehydration and pressure filtration tank.

[0010] Preferably, a hinge seat is fixed at the right end of the upper side wall of the lower cover. The upper cover is rotatably connected to the lower cover through the cooperation of a shaft pin and the hinge seat.

[0011] Preferably, the number of the support columns is three, and rubber anti-slip seats are fixed on the lower side walls of the support columns.

[0012] Preferably, the independent sample chamber includes an independent sample chamber main body and a sample chamber handle, and the sample chamber handle is fixedly arranged on the upper side wall of the independent sample chamber main body.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1) By the gas pressure discharged from the gas booster pump, the present utility model applies pressure to the slurry in the sample chamber, thereby realizing solid-liquid separation. The filtrate during the pressure filtration process flows out from the water outlet pipe provided at the bottom layer, and the solid remains on the filter paper. The use of gas pressure filtration can achieve the experimental verification research on the efficient dehydration of fine particles such as slime and coal-bearing clay, and improve the filtration efficiency.

[0015] 2) The top cover and the four screws at the bottom layer of the present utility model adopt different technologies and adopt a lift-up cover design, which can be easily turned upwards, facilitating the loading and unloading of samples, greatly simplifying the sample loading and unloading process, reducing the operation time, and also facilitating daily cleaning and maintenance.

[0016] 3) An independent sample chamber that can be lifted and fits the inside of the pressure filtration tank is designed inside the dehydration and pressure filtration tank of the present utility model. The sample chamber can be easily lifted or lowered from the inside of the pressure filtration tank, facilitating the placement and removal of samples. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 Schematic diagram of the component structure in the working state of the present utility model;

[0019] Figure 3 Detail drawing of the independent sample chamber.

[0020] In the figure: 100, upper part of the top layer; 200, dehydration pressure filter tank; 300, lower part of the bottom layer; 400, independent sample chamber; 101, left steam valve; 102, right steam valve; 103, pressure gauge; 104, upper layer of the top cover; 105, lower layer of the top cover; 301, bottom layer screw; 302, bottom cover; 303, water outlet pipe; 304, support pillar.

[0021] 401, main body of the independent sample chamber; 402, handle of the sample chamber. Specific implementation manner

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0024] Embodiment:

[0025] Please refer to Figures 1-3 , the present utility model provides a technical solution:

[0026] A pull-type coal slime gas pressurization filtration and dehydration device, including the upper part 100 of the top layer, the dehydration pressure filter tank 200, the lower part 300 of the bottom layer, and the independent sample chamber 400. A cavity is provided inside the dehydration pressure filter tank 200, and the independent sample chamber 400 is located inside the dehydration pressure filter tank 200;

[0027] The upper part 100 of the top layer includes a left steam valve 101, a right steam valve 102, a pressure gauge 103, an upper cover layer 104 and a lower cover layer 105. The upper cover layer 104 is rotatably arranged at the upper end of the lower cover layer 105. A pressure gauge 103 is fixed to the side wall of the upper cover layer 104 for monitoring the internal pressure. The gas pressure should be controlled below 0.88 Mpa. A left steam valve 101 is fixed to the left side wall of the pressure gauge 103, and a right steam valve 102 is fixed to the right side wall of the pressure gauge 103;

[0028] The lower part 300 of the bottom layer includes bottom layer screws 301, a bottom cover 302, a water outlet pipe 303, and support columns 304. There are four bottom layer screws 301 in total, which are threadedly connected to the lower side wall of the dehydration pressure filter tank 200. The bottom cover 302 is fixedly connected to the lower side wall of the dehydration pressure filter tank 200 through the bottom layer screws 301. Evenly arranged support columns 304 are fixed to the lower side wall of the bottom cover 302. The water outlet pipe 303 is fixedly connected to the side wall of the bottom cover 302. The water outlet pipe 303 is installed in the middle part of the bottom cover 302 for discharging the filtered liquid. If the water outlet pipe 303 is not needed, a beaker can be placed at the water outlet of the bottom cover 302 to collect the waste liquid.

[0029] The upper part 100 of the top cover serves as the top component of the entire pressure filtration system. Its lower cover layer 105 is tightly connected to the dehydration pressure filter tank 200 to ensure that there is no leakage during the entire pressurized dehydration process. The dehydration pressure filter tank 200 is designed with a hollow structure inside, and an independent and liftable sample chamber 400 that fits the inner wall of the dehydration pressure filter tank 200 is provided inside. The pressure gauge 103 is installed on the upper cover layer 104 for real-time monitoring and display of the internal pressure during the dehydration pressure filtration process to ensure safe and effective dehydration operation. The lower part 300 of the bottom layer is located at the bottom of the device and is provided with four bottom layer screws 301 to firmly lock the top cover and the bottom cover in place to ensure that the entire device remains stable during operation. The water outlet pipe 303 is installed in the middle part of the bottom cover 302 and is directly connected to the inside of the dehydration pressure filter tank to facilitate the rapid discharge of the filtrate after pressure filtration. If an alternative solution is needed, it is also possible to choose not to directly install the water outlet pipe 303 on the device, but to place a container near the bottom water outlet to collect the filtrate. The entire device is firmly supported by three support columns 304 to ensure that the equipment will not tip over due to its own weight or internal pressure during operation.

[0030] The independent sample chamber 400 fits the inner wall of the cavity inside the dehydration pressure filter tank 200 to ensure that the independent sample chamber 400 can be conveniently taken out or put into the dehydration pressure filter tank 200.

[0031] A hinge seat is fixed to the right end of the upper side wall of the lower cover layer 105. The upper cover layer 104 is rotatably connected to the lower cover layer 105 through the cooperation of a shaft pin and the hinge seat. The upper cover layer 104 adopts a flip-top design for easy operation.

[0032] The number of the support columns 304 is three, and rubber anti-slip seats are fixed on the lower side walls of the support columns 304 to ensure the structural stability.

[0033] The independent sample chamber 400 includes an independent sample chamber main body 401 and a sample chamber handle 402, and the sample chamber handle 402 is fixedly arranged on the upper side wall of the independent sample chamber main body 401.

[0034] Working principle:

[0035] Before using the device, first confirm the power line, and there are no exposed wires or damaged parts. Connect the power supply correctly according to the requirements of the equipment manual to ensure that the voltage meets the equipment requirements. Carefully check whether the equipment has obvious physical damage, such as cracks, deformations, etc. before starting. Before starting the gas booster pump, pay special attention to the heat dissipation condition of the pump to ensure the normal operation of the heat dissipation system, ensure the safety of the test personnel, and ensure the normal operation of the equipment;

[0036] Please refer to Figure 1 , 2 , the operator first opens the upper layer 104 of the top cover during use to expose the opening of the dehydration pressure filter tank 200, pulls out the independent sample chamber 400, which can be easily lifted and fits closely inside the dehydration pressure filter tank 200. Place the special filter paper flat and precisely on the bottom of the independent sample chamber 400. The bottom of the independent sample chamber 400 is a board with gaps that can specifically take, place, remove, and place the filter paper to ensure that the filter paper fits closely with the bottom surface of the sample chamber to ensure the effectiveness and uniformity of filtration. Slowly pour the slurry to be filtered through the inlet at the upper end of the sample chamber 400, and pay attention not to pour the slurry too fast to avoid splashing or causing the filter paper to move. Cover the upper layer 104 of the top cover on the opening of the pressure filter tank and ensure that the top cover is tightly combined with the pressure filter tank to form a good seal. Open the left steam valve 101 and the right steam valve 102 on the left and right sides in sequence to introduce vacuum pressure so that the slurry is under uniform pressure on the filter paper. Under the action of the pressure, the solid particles remain on the filter paper. The size of the filter paper is 0.022m 2 , which can filter fine minerals of 500 mesh (0.031) millimeters, and the filtrate passes through the filter paper and enters the water outlet pipe 303. When it is observed that the liquid flow at the water outlet 303 slows down significantly and is close to the state of almost stopping dripping, it indicates that the pressure filtration process is approaching the end. At this time, the left steam valve 101 and the right steam valve 102 on the left and right sides should be closed to cut off the gas supply, and the filtrate finally drains out from the water outlet pipe;

[0037] Please refer to Figure 1 , 2, a gas booster pump is used to apply gas pressure to the slurry to be filtered in the independent sample chamber 400 in the way of automatic continuous jetting, so as to effectively separate the liquid in the slurry and quickly form a filter cake. During the whole process, attention should be paid to operation safety, following laboratory regulations to ensure a smooth transition of gas boosting and pressure relief, as well as the safe discharge and proper treatment of filtrate;

[0038] Please refer to Figure 1 , 2 , when the first pressure filtration operation is completed and before preparing for the second pressure filtration, for the case of continuously pressure filtering the same sample, there is no need to perform additional cleaning inside the equipment, and the next round of pressure filtration operation can be carried out directly. However, if different samples are planned to be pressure filtered, in order to prevent cross - contamination from affecting the accuracy of experimental results, the inside of the independent sample chamber 400 must be thoroughly rinsed before pressure filtration; when cleaning the equipment, first ensure that the equipment has been completely shut down and the power supply has been disconnected. According to the design of the equipment, safely remove the independent sample chamber 400, take out the used filter paper, and avoid damaging the filter cake. The residues inside the sample chamber can be gently removed using a soft brush or soft cloth. Or use an appropriate amount of cleaning agent (such as mild detergent) and clean water to thoroughly clean the sample chamber to ensure the removal of all residues. Thoroughly rinse the sample chamber with clean water to ensure that there is no cleaning agent residue. If disposable filter paper is used, discard the old filter paper after the experiment and replace it with a new one before the next experiment; if a reusable filtration medium such as a metal mesh or a filter cloth of a specific material is used, it needs to be cleaned and disinfected according to the manufacturer's recommendations. The inside and outside of the top cover also need to be cleaned to ensure that there are no residues. Clean the outlet pipe to ensure that there is no blockage. Generally speaking, before and after each pressure filtration, corresponding cleaning measures need to be taken according to the sample replacement situation to ensure the accuracy and reliability of experimental data; the workbench where the equipment is located and the gas booster pump are both equipped with flexible universal wheels. The workbench equipped with universal wheels can be easily moved inside the laboratory, facilitating the experimenter to adjust the equipment position according to needs, reducing the physical burden on the experimenter; when equipment maintenance or cleaning is required, the workbench can be easily moved to a more convenient position. The design of the universal wheels on the gas booster pump allows the gas booster pump to be moved to the designated storage location after the pressure filtration work is completed, avoiding occupying too much space; storing the equipment in an orderly manner reduces the safety hazards caused by equipment accumulation; by reasonably arranging and moving the equipment, the laboratory can be kept clean and a better working environment can be created. By adopting this flexible universal wheel design, not only can the work efficiency of the experimenter be improved, but also the safety and cleanliness of the laboratory can be ensured, reflecting the user - friendly design of modern laboratory design.

[0039] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0040] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A lifting type slime gas pressurization filtration and dehydration device, comprising an upper part of the top layer (100), a dehydration and pressure filtration tank (200), a lower part of the bottom layer (300) and an independent sample chamber (400), characterized in that, The interior of the dehydration and pressure filtration tank (200) is provided with a cavity, and the independent sample chamber (400) is located inside the dehydration and pressure filtration tank (200); The upper part of the top layer (100) includes a left steam valve (101), a right steam valve (102), a pressure gauge (103), an upper cover layer (104) and a lower cover layer (105). The upper cover layer (104) is rotatably arranged at the upper end of the lower cover layer (105). A pressure gauge (103) is fixed to the side wall of the upper cover layer (104). A left steam valve (101) is fixed to the left side wall of the pressure gauge (103), and a right steam valve (102) is fixed to the right side wall of the pressure gauge (103); The lower part of the bottom layer (300) includes bottom layer screws (301), a bottom cover (302), a water outlet pipe (303), and supports (304). There are four bottom layer screws (301) in total and they are threadedly connected to the lower side wall of the dehydration and pressure filtration tank (200). The bottom cover (302) is fixedly connected to the lower side wall of the dehydration and pressure filtration tank (200) through the bottom layer screws (301). Uniformly arranged supports (304) are fixed to the lower side wall of the bottom cover (302), and the water outlet pipe (303) is fixedly connected to the side wall of the bottom cover (302).

2. The pull-type coal slime gas pressurization filtration and dehydration device according to claim 1, characterized in that: The independent sample chamber (400) is in contact with the inner wall of the cavity inside the dehydration and pressure filtration tank (200).

3. The pull-type coal slime gas pressurization filtration and dehydration device according to claim 1, characterized in that: A hinge seat is fixed to the right end of the upper side wall of the lower cover layer (105). The upper cover layer (104) is rotatably connected to the lower cover layer (105) through the cooperation of a shaft pin and the hinge seat.

4. A pull-type coal slime gas pressurization filtration and dehydration device according to claim 1, characterized in that: The number of the supports (304) is three, and rubber anti-slip seats are fixed to the lower side walls of the supports (304).

5. The pull-type slime gas pressurization filtration and dehydration device according to claim 1, characterized in that: The independent sample chamber (400) includes an independent sample chamber main body (401) and a sample chamber handle (402). The sample chamber handle (402) is fixedly arranged on the upper side wall of the independent sample chamber main body (401).

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