Separating device for flotation of clean coal
By designing a separation device for flotation fine coal, the filtrate overflowed from the filter press is collected using the insert plate, liquid inlet tank and filtrate pipeline, the problem of water running of the filter press is solved, the effective separation of the flotation fine coal and the filtrate is achieved, and the efficiency of coal washing and selection is improved.
Patent Information
- Application Number
- CN202421006884.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-05-10
AI Technical Summary
During the filter press, the filter press is insufficient pressure, damaged filter cloth and lax sealing, causing the filtrate to run away, which affects the separation effect of flotation refined coal and filtrate.
A separation device including a filter press, a scraper, a separator and a filtrate recovery tank is designed. The separator collects the overflowing filtrate from the filter press through the insert plate, the liquid inlet tank and the filtrate pipeline, and controls the sliding displacement of the insert plate through electrical connections to realize the recovery of the filtrate and the separation of flotation refined coal.
It effectively solves the problem of water running of the filter press, realizes the effective separation of flotation refined coal and filtrate, improves the efficiency of coal washing and selection and extends the service life of the equipment.
Smart Images
Figure CN222624869U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of coal washing, and in particular to a separation device for flotation of clean coal. Background Art
[0002] Coal washing is to wash, float and dehydrate the raw coal multiple times to obtain a high-purity coal product with low impurities and high calorific value, namely, floatation clean coal. Floatation clean coal can be used as fuel in the fields of chemical industry, electricity and metallurgy. Filter press is a filtering equipment for solid-liquid separation. It squeezes the coal mixture to be washed, filters out the filtrate wastewater, and unloads the floatation clean coal into the scraper, which transports the floatation clean coal to the next level through the scraper, thereby separating the floatation clean coal from the filtrate.
[0003] However, during the filtration process of the filter press, due to insufficient pressure, damaged filter cloth, and loose sealing of the filter plate, the filtrate will flow out from between the filter cloth or filter plate, which is called water leakage, and then the separation effect of the flotation clean coal and the filtrate is poor. The outflow of filtrate can be reduced by adjusting the gap between the filter plates, increasing the pressure of the filter press, and replacing the filter cloth. However, frequent adjustment of mechanical equipment reduces the efficiency of coal washing and shortens the service life of the filter press. Therefore, the above method cannot effectively solve the problem of water leakage of the filter press, and cannot achieve effective separation of flotation clean coal and filtrate. Utility Model Content
[0004] The present application provides a separation device for flotation clean coal, which is used to collect filtrate overflowed from a filter press during a filtration process, thereby achieving separation of the flotation clean coal and the filtrate.
[0005] The present application provides a separation device for flotation of clean coal, comprising: a filter press, a scraper, a separator and a filtrate recovery tank;
[0006] The separator includes a plug plate, a liquid inlet tank and a filtrate pipe. The top and bottom of the liquid inlet tank are both provided with openings. The plug plate is a sheet plate with a preset thickness. The plug plate is slidably connected to the top of the liquid inlet tank. The filtrate pipe is a strip pipe. The filtrate pipe is connected to the bottom of the liquid inlet tank.
[0007] The filter press is electrically connected to the plug plate to control the sliding displacement of the plug plate;
[0008] The scraper comprises a feeding channel, the feeding end of the feeding channel is connected to the discharge port of the filter press, and the discharge end of the feeding channel is connected to the top opening of the liquid inlet tank;
[0009] A feed inlet is arranged at the top of the filtrate recovery tank, and the feed inlet of the filtrate recovery tank is connected to the filtrate pipeline.
[0010] In the above separation device, a filter press is used to squeeze the coal mixture to be washed. The filter press is electrically connected to the plug plate of the separator, and the plug plate is controlled to slide in the liquid inlet tank to open the liquid inlet tank. During the squeezing process, the filtrate wastewater is dialyzed out from the discharge port of the filter press, and enters the liquid inlet tank of the separator through the feeding channel of the scraper, and enters the filtrate recovery tank through the filtrate pipeline, so as to collect the filtrate overflowed from the filter press during the filtration process. When the filter press is finished squeezing and the flotation clean coal is unloaded, the filter press controls the plug plate to slide in the liquid inlet tank to close the liquid inlet tank. The flotation clean coal is transported to the lower-level equipment through the feeding channel of the scraper. Since the separator is in a closed state at this time, the flotation clean coal cannot enter the filtrate recovery tank through the separator. Based on this, the separation of the flotation clean coal and the filtrate is achieved, and the water leakage problem of the filter press is solved.
[0011] In some embodiments, the separator further comprises: a filter screen, which is fixed inside the liquid inlet tank and disposed below the plug plate.
[0012] By setting a filter screen inside the liquid inlet tank, the solid filter residue in the mixed liquid can be filtered out to prevent the filter residue from clogging the filtrate pipeline, protect the separator from damage, increase the service life of the separator, and improve the production efficiency of flotation clean coal.
[0013] In some embodiments, the top opening area of the inlet tank is larger than the bottom opening area.
[0014] The top opening area of the inlet tank is large, which can increase the storage capacity of the filtrate and reduce the probability of the filtrate overflowing the inlet tank. The bottom opening area of the inlet tank is small, which is convenient for collecting the filtrate and discharging the filtrate into the filtrate recovery tank through the filtrate pipeline. At the same time, the narrow bottom can filter out large impurity particles and prevent impurity particles from entering the filtrate recovery tank.
[0015] In some embodiments, the top opening of the liquid inlet tank is rectangular in shape, and the bottom opening of the liquid inlet tank is circular in shape.
[0016] Setting the liquid inlet trough to a "square sky and round earth" shape can improve the sliding flexibility of the plug plate on the top of the liquid inlet trough, making it easier for the filter press to control the opening or closing of the plug plate; and improve the airtightness of the connection between the liquid inlet trough and the filtrate pipeline, reducing the leakage of filtrate from the connection gap between the liquid inlet trough and the filtrate pipeline.
[0017] In some embodiments, the insert board includes: a first push rod and a second push rod;
[0018] The first push rod and the second push rod are strip-shaped columnar structures, and the first push rod and the second push rod are fixed on both sides of the plug board along the sliding direction of the plug board.
[0019] A first push rod and a second push rod are arranged at two ends of the plug board, and the plug board is controlled to be opened or closed by pushing or pulling the first push rod or the second push rod.
[0020] In some embodiments, the plug board further includes: a fixed plate; the fixed plate is a strip-shaped plate, one end of the fixed plate is connected to the first push rod, the other end of the fixed plate is connected to the second push rod, and the fixed plate is perpendicular to the sliding direction of the plug board.
[0021] The fixing plate is used to fix the first push rod and the second push rod to prevent the first push rod and the second push rod from being deformed or damaged during the pushing and pulling process, thereby extending the service life of the separator.
[0022] In some embodiments, a slide rail is provided on the top of the liquid inlet tank, and the slide rail is a strip-shaped groove structure, and the inserting plate is connected to the top of the liquid inlet tank through the slide rail.
[0023] A slide rail is provided on the top of the liquid inlet tank to support the plug plate and enable the plug plate to slide flexibly on the top of the liquid inlet tank to open or close the liquid inlet tank. The slide rail can reduce the friction between the plug plate and the liquid inlet tank, as well as the wear of the plug plate, thereby extending the service life of the separator.
[0024] It can be seen from the above technical scheme that the present application provides a separation device for flotation of clean coal, the device comprising: a filter press, a scraper, a separator and a filtrate recovery tank. Among them, the separator comprises a plug plate, a liquid inlet tank and a filtrate pipeline, the top and bottom of the liquid inlet tank are both provided with openings, the plug plate is a sheet plate of preset thickness, the plug plate is slidably connected to the top of the liquid inlet tank, the filtrate pipeline is a strip pipeline, and the filtrate pipeline is connected to the bottom of the liquid inlet tank; the filter press is electrically connected to the plug plate to control the sliding displacement of the plug plate; the feed end of the feed channel of the scraper is connected to the discharge port of the filter press, and the discharge end of the feed channel is connected to the top opening of the liquid inlet tank; the top of the filtrate recovery tank is provided with a feed port, and the feed port of the filtrate recovery tank is connected to the filtrate pipeline. When the filter press is pressing, the plug is opened and the filtrate water enters the filtrate pipe through the separator; when the filter press is unloading the flotation clean coal, the plug is closed to achieve effective separation of the flotation clean coal and the filtrate water, solving the problem of water leakage in the filter press. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0026] Figure 1 This is an example diagram of the overall structure of a separation device for flotation of clean coal according to an embodiment of the present application;
[0027] Figure 2This is an exemplary diagram of the separator structure of the separation device for flotation of clean coal according to an embodiment of the present application;
[0028] Figure 3 This is an example diagram of a separator cross section of a separation device for flotation of clean coal according to an embodiment of the present application.
[0029] Illustration Description:
[0030] Among them, 1-filter press; 2-scraper; 3-separator; 31-insert plate; 32-liquid inlet tank; 33-filtrate pipeline; 34-first push rod; 35-second push rod; 36-solid plate; 37-filter screen. DETAILED DESCRIPTION
[0031] In order to make the purpose and implementation method of the present application clearer, the exemplary implementation method of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.
[0032] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.
[0033] The terms "first", "second", "third", etc. in the specification and claims of this application and the above drawings are used to distinguish similar or similar objects or entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise noted. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances.
[0034] The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to all the components expressly listed but may include other components not expressly listed or inherent to such product or device.
[0035] To facilitate the introduction of the technical solution proposed in this application, some concepts involved in this application are first explained and illustrated below.
[0036] During the coal processing process, special flotation agents are added to the raw coal to make the surface of the coal particles hydrophobic and float on the water, while the impurities and gangue sink to the bottom of the water; after multiple washing, flotation and dehydration steps, flotation clean coal with high coal content, low ash content and high calorific value is obtained.
[0037] In the process of flotation clean coal, a filter press is used. A filter press is a filtering device for solid-liquid separation, and its components include a pressing plate, a push plate, a filter plate, a hydraulic cylinder, and a transmission device. Among them, the pressing plate is used to press the filter plate to form a filter chamber; the filter plate is used to filter solid particles; the hydraulic cylinder is used to provide a pressing force; and the transmission device is used to drive the filter plate to move and pull apart. The flotation clean coal is dehydrated by a filter press. The filter press removes the moisture from the clean coal by pressure filtration to obtain relatively dry flotation clean coal, and the flotation clean coal is transported to the lower equipment by a scraper.
[0038] The scraper conveyor includes a scraper, a chain, a driving device and a trough body, etc., which are used to scrape the flotation clean coal produced during the flotation process from the flotation machine and transport it to the subsequent dehydration treatment equipment, and to transport the dehydrated flotation clean coal to the lower-level equipment.
[0039] It should be understood that the filter press is used to squeeze the coal mixture to be washed, filter out the filtrate wastewater, and unload the flotation clean coal into the scraper, and then transport the flotation clean coal to the next level of equipment through the scraper. However, during the filtration process of the filter press, due to insufficient pressure, damaged filter cloth, and loose sealing of the filter plate, the filtrate will flow out from between the filter cloth or filter plate (i.e., water leakage), which will lead to poor separation of the flotation clean coal and the filtrate. The outflow of filtrate can be reduced by adjusting the gap between the filter plates, increasing the pressure of the filter press, and replacing the filter cloth. However, frequent adjustment of mechanical equipment will reduce the efficiency of coal washing and shorten the service life of the filter press.
[0040] In order to collect the filtrate overflowed from the filter press during the filtration process and separate the flotation clean coal from the filtrate, an embodiment of the present application provides a separation device for flotation clean coal. Figure 1 This is an example diagram of the overall structure of a separation device for flotation of clean coal according to an embodiment of the present application; Figure 2 This is an exemplary diagram of the separator structure of the separation device for flotation of clean coal according to an embodiment of the present application; Figure 3 This is an example diagram of a separator cross section of a separation device for flotation of clean coal according to an embodiment of the present application. Figure 1 , Figure 2 and Figure 3 The separation device for flotation of clean coal provided in the present application is described in detail.
[0041] The embodiment of the present application provides a separation device for flotation of clean coal, comprising: a filter press 1, a scraper 2, a separator 3 and a filtrate recovery tank 4;
[0042] The separator 3 includes a plug plate 31, a liquid inlet tank 32 and a filtrate pipe 33. The top and bottom of the liquid inlet tank 32 are both provided with openings. The plug plate 31 is a sheet plate with a preset thickness. The plug plate 31 is slidably connected to the top of the liquid inlet tank 32. The filtrate pipe 33 is a strip pipe. The filtrate pipe 33 is connected to the bottom of the liquid inlet tank 32.
[0043] The filter press 1 is electrically connected to the plug plate 31 to control the sliding displacement of the plug plate 31;
[0044] The scraper 2 includes a feeding channel, the feeding end of the feeding channel is connected to the discharge port of the filter press 1, and the discharge end of the feeding channel is connected to the top opening of the liquid inlet tank 32;
[0045] A feed inlet is provided at the top of the filtrate recovery tank 4 , and the feed inlet of the filtrate recovery tank 4 is connected to the filtrate pipeline 33 .
[0046] In some embodiments, the filter press 1 squeezes the coal mixture to be washed, and the filter press 1 is electrically connected to the plug plate 31 of the separator 3 to control the plug plate 31 to slide in the liquid inlet tank 32 to open the liquid inlet tank 32. During the squeezing process, the filtrate wastewater is dialyzed out from the discharge port of the filter press 1, and enters the liquid inlet tank 32 of the separator 3 through the feeding channel of the scraper 2, and enters the filtrate recovery tank 4 through the filtrate pipeline 33, so as to collect the filtrate overflowed from the filter press 1 during the filtration process. When the filter press 1 is pressed and the flotation clean coal is unloaded, the filter press 1 is electrically connected to the plug plate 31 of the separator 3 to control the plug plate 31 to slide in the liquid inlet tank 32 to close the liquid inlet tank 32. The flotation clean coal is transported to the lower-level equipment through the feeding channel of the scraper 2. Since the separator 3 is in a closed state at this time, the flotation clean coal cannot enter the filtrate recovery tank 4 through the separator 3.
[0047] By means of the above-mentioned separation device, the flotation clean coal and the filtrate can be separated, thereby effectively solving the water leakage problem of the filter press 1 and improving the production efficiency of the flotation clean coal.
[0048] In some embodiments, the separator 3 further includes a filter screen 37 , which is fixed inside the liquid inlet tank 32 and disposed below the insert plate 31 .
[0049] For example, during the pressing process of the filter press 1, the leaked filtrate includes solid filter residues. The solid filter residues enter the liquid inlet tank 32 of the separator 3, and enter the filtrate recovery tank 4 from the filtrate pipeline 33, resulting in the blockage of the filtrate pipeline 33, which in turn causes the filtrate of the separator 3 to flow unsmoothly, thereby reducing the production efficiency of the flotation clean coal.
[0050] By setting a filter screen 37 inside the liquid inlet tank 32 to filter out solid residue in the mixed liquid, the residue can be prevented from clogging the filtrate pipeline 33, protecting the separator 3 from damage, increasing the service life of the separator 3, and improving the production efficiency of flotation clean coal.
[0051] It should be understood that the size and shape of the filter mesh in the filter screen 37 need to be set according to the particle size of the solid filter residue during the pressing process. The filter mesh can be in different shapes such as round, diamond, square and strip. The embodiment of the present application does not specifically limit the size and shape of the filter mesh.
[0052] In some embodiments, the top opening area of the liquid inlet groove 32 is larger than the bottom opening area.
[0053] For example, the top opening area of the liquid inlet tank 32 is large, which can increase the storage capacity of the filtrate and reduce the occurrence of the filtrate overflowing the liquid inlet tank 32. The bottom opening area of the liquid inlet tank 32 is small, which is convenient for collecting the filtrate and discharging the filtrate into the filtrate recovery tank 4 through the filtrate pipeline 33. At the same time, the narrow bottom can filter out large impurity particles and prevent the impurity particles from entering the filtrate recovery tank 4.
[0054] In some embodiments, the top opening of the liquid inlet groove 32 is rectangular, and the bottom opening of the liquid inlet groove 32 is circular.
[0055] For example, the top opening of the liquid inlet tank 32 is rectangular, which facilitates the connection between the rectangular plug plate 31 and the top of the liquid inlet tank 32. The bottom opening of the liquid inlet tank 32 is circular, which facilitates the connection between the strip-shaped columnar filtrate pipeline 33 and the bottom of the liquid inlet tank 32. The above structure can improve the flexibility of the plug plate 31 sliding on the top of the liquid inlet tank 32, facilitate the filter press 1 to control the opening or closing of the plug plate 31, and improve the airtightness of the connection between the liquid inlet tank 32 and the filtrate pipeline 33, and reduce the probability of filtrate seeping out from the connection gap between the liquid inlet tank 32 and the filtrate pipeline 33.
[0056] In some embodiments, the plug board 31 includes a first push rod 34 and a second push rod 35. The first push rod 34 and the second push rod 35 are bar-shaped columnar structures, and the first push rod 34 and the second push rod 35 are fixed to both sides of the plug board 31 along the sliding direction of the plug board 31.
[0057] For example, a first push rod 34 and a second push rod 35 are provided at both ends of the plug plate 31, and the plug plate 31 is controlled to be opened or closed by pushing and pulling the first push rod 34 or the second push rod 35. When the filter press 1 presses the flotation clean coal, the filter press 1 controls the plug plate 31 to slide open at the top of the liquid inlet tank 32 through the electrical connection with the plug plate 31, and allows the filtrate to enter the liquid inlet tank 32. When the filter press 1 is finished pressing and the flotation clean coal is unloaded, the filter press 1 controls the plug plate 31 to slide closed at the top of the liquid inlet tank 32 through the electrical connection with the plug plate 31, so as to close the liquid inlet tank 32 and prevent the flotation clean coal from entering the separator 3, thereby realizing the separation of the flotation clean coal and the filtrate.
[0058] In some embodiments, the plug board 31 further includes a fixing plate 36 , which is a strip-shaped plate. One end of the fixing plate 36 is connected to the first push rod 34 , and the other end of the fixing plate 36 is connected to the second push rod 35 . The fixing plate 36 is perpendicular to the sliding direction of the plug board 31 .
[0059] For example, the fixing plate 36 is used to fix the first push rod 34 and the second push rod 35 to prevent the first push rod 34 and the second push rod 35 from being deformed or damaged during the pushing and pulling process, thereby extending the service life of the separator 3.
[0060] In some embodiments, a slide rail is provided on the top of the liquid inlet tank 32 , and the slide rail is a strip-shaped groove structure, and the inserting plate 31 is connected to the top of the liquid inlet tank 32 through the slide rail.
[0061] For example, a slide rail with a strip groove structure is provided on the top of the liquid inlet tank 32 to support the plug plate 31, and the plug plate 31 can slide flexibly on the top of the liquid inlet tank 32 to open or close the liquid inlet tank 32. The slide rail can reduce the friction between the plug plate 31 and the liquid inlet tank 32, reduce the wear of the plug plate 31, and extend the service life of the separator 3.
[0062] It can be seen from the above technical scheme that the present application provides a separation device for flotation of clean coal, the device comprising: a filter press, a scraper, a separator and a filtrate recovery tank. Among them, the separator comprises a plug plate, a liquid inlet tank and a filtrate pipeline, the top and bottom of the liquid inlet tank are both provided with openings, the plug plate is a sheet plate of preset thickness, the plug plate is slidably connected to the top of the liquid inlet tank, the filtrate pipeline is a strip pipeline, and the filtrate pipeline is connected to the bottom of the liquid inlet tank; the filter press is electrically connected to the plug plate to control the sliding displacement of the plug plate; the feed end of the feed channel of the scraper is connected to the discharge port of the filter press, and the discharge end of the feed channel is connected to the top opening of the liquid inlet tank; the top of the filtrate recovery tank is provided with a feed port, and the feed port of the filtrate recovery tank is connected to the filtrate pipeline. When the filter press is pressing, the plug is opened and the filtrate water enters the filtrate pipe through the separator; when the filter press is unloading the flotation clean coal, the plug is closed to achieve effective separation of the flotation clean coal and the filtrate water, solving the problem of water leakage in the filter press.
[0063] Similar parts between the embodiments provided in this application can be referenced to each other. The specific implementation methods provided above are only a few examples under the general concept of this application and do not constitute a limitation on the protection scope of this application. For those skilled in the art, any other implementation methods expanded based on the scheme of this application without creative work belong to the protection scope of this application.
Claims
1. A separation device for flotation of clean coal, characterized in that: include: A separator (3), the separator (3) comprising a plug plate (31), a liquid inlet tank (32) and a filtrate pipe (33), the top and bottom of the liquid inlet tank (32) are both provided with openings, the plug plate (31) is a sheet-like plate with a preset thickness, the plug plate (31) is slidably connected to the top of the liquid inlet tank (32), the filtrate pipe (33) is a strip pipe, and the filtrate pipe (33) is connected to the bottom of the liquid inlet tank (32); A filter press (1), the filter press (1) being electrically connected to the plug plate (31) to control the sliding displacement of the plug plate (31); A scraper (2), the scraper (2) comprising a feeding channel, the feeding end of the feeding channel being connected to the discharge port of the filter press (1), and the discharge end of the feeding channel being connected to the top opening of the liquid inlet tank (32); A filtrate recovery tank (4), wherein a feed inlet is provided at the top of the filtrate recovery tank (4), and the feed inlet of the filtrate recovery tank (4) is connected to the filtrate pipeline (33).
2. The separation device for flotation of clean coal according to claim 1, characterized in that: The separator (3) further comprises: A filter screen (37) is fixed inside the liquid inlet tank (32) and is arranged below the insert plate (31).
3. The separation device for flotation of clean coal according to claim 1, characterized in that: The top opening area of the liquid inlet groove (32) is larger than the bottom opening area.
4. The separation device for flotation of clean coal according to claim 1, characterized in that: The top opening shape of the liquid inlet groove (32) is rectangular, and the bottom opening shape of the liquid inlet groove (32) is circular.
5. The separation device for flotation of clean coal according to claim 1, characterized in that: The plug board (31) comprises: A first push rod (34) and a second push rod (35), wherein the first push rod (34) and the second push rod (35) are strip-shaped columnar structures, and the first push rod (34) and the second push rod (35) are fixed on both sides of the plug board (31) along the sliding direction of the plug board (31).
6. The separation device for flotation of clean coal according to claim 5, characterized in that: The plug board (31) further comprises: A fixed plate (36), wherein the fixed plate (36) is a strip-shaped plate, one end of the fixed plate (36) is connected to the first push rod (34), and the other end of the fixed plate (36) is connected to the second push rod (35), and the sliding direction of the fixed plate (36) is perpendicular to that of the plug plate (31).
7. The separation device for flotation of clean coal according to claim 1, characterized in that: A slide rail is provided on the top of the liquid inlet tank (32), and the slide rail is a strip-shaped groove structure. The inserting plate (31) is connected to the top of the liquid inlet tank (32) via the slide rail.