Gas-powder separation device after sampling of coal powder

Abstract

The utility model discloses a kind of gas-powder separation devices after coal powder sampling, gas-powder separation devices after coal powder sampling include: separation tank and filter screen plate.Cavity is in separation tank, and the both ends of separation tank along first direction are respectively equipped with with cavity intercommunication feed inlet and discharge port;At least part of filter screen plate is located in cavity, and filter screen plate is multiple, and multiple filter screen plate is spaced apart along first direction, and filter screen plate is equipped with multiple filter holes, in the direction from feed inlet to discharge port, the aperture of filter hole on filter screen plate gradually decreases in turn.According to the gas-powder separation device after coal powder sampling of the utility model, gas-powder separation device after coal powder sampling can also realize the classification filtering of coal powder particles while realizing the separation of coal powder and gas.

Description

Technical Field

[0001] This utility model relates to the field of coal powder technology, and in particular to a gas-powder separation device after coal powder sampling. Background Technology

[0002] In related technologies, coal is an important fossil fuel, mainly composed of elements such as carbon, hydrogen, oxygen, nitrogen, and sulfur, with the content varying depending on the type of coal. It is one of the most abundant fossil fuel resources on Earth, widely used in power generation, steel production, chemical raw materials, and residential heating, among other fields. Coal quality testing is a crucial step in the coal production and utilization process. Detailed chemical and physical property analysis of coal reveals key indicators such as ash content, moisture, volatile matter, fixed carbon, sulfur content, and calorific value. These indicators directly affect the coal's combustion efficiency, environmental performance, and economic benefits. During coal quality testing, the coal is first crushed into fine coal powder. This coal powder easily mixes with air during transportation, forming an air-powder mixture. To ensure the accuracy of coal quality testing, representative coal powder samples need to be taken from these air-powder mixtures.

[0003] Existing coal powder sampling and solid-gas separation devices effectively separate coal powder from gas through a built-in fan and filtration system, and internal cleaning is simple. However, this design does not consider the importance of coal powder particle classification, thus causing inconvenience for subsequent coal quality testing. Due to the lack of classification functionality, the separated coal powder particles are of mixed sizes, requiring additional particle classification processing when handling the collected coal powder, increasing the workload and time costs for testing personnel.

[0004] Therefore, it is necessary to invent a gas-powder separation device after coal powder sampling to solve the above problems. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a coal powder sampling gas-powder separation device, which can separate coal powder from gas while simultaneously achieving graded filtration of coal powder particles.

[0006] A coal powder sampling gas-powder separation device according to an embodiment of the present invention includes: a separation box and a filter screen. The separation box has a cavity, and the two ends of the separation box along a first direction are respectively provided with an inlet and an outlet communicating with the cavity; at least a portion of the filter screen is disposed in the cavity, and there are multiple filter screens, which are spaced apart along the first direction. The filter screen is provided with multiple filter holes, and the diameter of the filter holes on the filter screen decreases sequentially in the direction from the inlet to the outlet.

[0007] According to the embodiment of the present invention, the coal powder sampling gas-powder separation device, by setting multiple filter screens spaced apart along a first direction in the separation box, and the filter screens having multiple filter holes, the pore size of the filter holes on the filter screens decreases sequentially from the feed inlet to the discharge outlet, can realize the graded filtration of coal powder particles, so that coal powder particles of different sizes can be effectively separated, improving the accuracy, reliability and efficiency of coal quality testing, and also improving the convenience of using coal powder. It can avoid subsequent additional particle grading processing work, saving the workload and time cost of testing personnel.

[0008] According to some embodiments of the present invention, the top of the separation box is provided with a slot communicating with the cavity, the filter screen plate passes through the slot and the top of the filter screen plate extends out of the separation box.

[0009] According to some embodiments of the present invention, the gas-powder separation device after coal powder sampling further includes a vibrator, which is connected to the top of the filter screen and located outside the separation box. The vibrator is used to drive the filter screen to vibrate.

[0010] According to some embodiments of the present invention, the gas-powder separation device after coal powder sampling further includes a collection hopper, which is connected to the bottom of the separation box. Each filter screen is provided with a collection hopper on the side near the feed inlet along the first direction. The collection hopper defines a collection cavity, the upper end of which is open and communicates with the cavity. At least a portion of the top of the collection hopper abuts against the bottom of the filter screen. The first direction is perpendicular to the vertical direction.

[0011] In some embodiments of this utility model, the bottom end of the material collection hopper is connected to a discharge pipe, and a control valve is provided inside the discharge pipe. The control valve is used to control the opening and closing of the discharge pipe.

[0012] According to some embodiments of the present invention, the gas-powder separation device after coal powder sampling further includes a pleated dust removal filter element, which is disposed between the filter screen plate closest to the discharge port and the discharge port, and is used to filter coal powder in the air.

[0013] In some embodiments of this utility model, the separation box is provided with an operation port on one side along the second direction, and an operation door is connected to the separation box. The operation door blocks the operation port, and an observation window is provided on the operation door. The observation window is a transparent tempered glass piece, wherein the first direction, the second direction, and the up and down direction are perpendicular to each other.

[0014] According to some embodiments of the present invention, the inner top wall of the separation box is connected to a brushing mechanism, and each of the filter screens is provided with the brushing mechanism on both sides along the first direction. The brushing mechanism is used to brush the filter screen.

[0015] In some embodiments of this utility model, the brushing mechanism includes a mounting frame and a cleaning brush. The mounting frame is connected to the inner top wall of the separation box. The cleaning brush is connected to the mounting frame and is located on the side of the mounting frame near the filter screen plate along the first direction. The end of the cleaning brush away from the mounting frame abuts against the filter screen plate.

[0016] According to some embodiments of the present invention, a lifting handle is fixedly connected to the top of the filter screen plate, and there are multiple lifting handles on each filter screen plate;

[0017] And / or, a flange is fixedly connected to the input end of the feed inlet, the flange being annular and arranged around the feed inlet;

[0018] And / or, each of the four bottom corners of the separation box is fixedly connected to a support leg.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic diagram of the structure of the gas-powder separation device according to an embodiment of the present utility model;

[0022] Figure 2 This is a partial cross-sectional view of the gas-powder separation device according to an embodiment of the present utility model;

[0023] Figure 3 This is an exploded view of the gas-powder separation device according to an embodiment of the present utility model, wherein the filter screen plate explodes out;

[0024] Figure 4 This is an exploded view of the gas-powder separation device according to an embodiment of the present utility model, wherein the pleated dust removal filter element explodes out;

[0025] Figure 5 This is a schematic diagram of the filter screen and vibrator of the gas-powder separation device according to an embodiment of the present utility model;

[0026] Figure 6 yes Figure 2Enlarged view of point A in the middle.

[0027] Figure label:

[0028] 100. Gas-powder separation device;

[0029] 1. Separation box; 11. Cavity; 12. Inlet; 13. Outlet; 14. Slot; 15. Flange; 16. Support leg; 17. Receiving cavity; 18. Operating port;

[0030] 2. Filter screen; 21. Lifting handle;

[0031] 3. Vibrator;

[0032] 4. Material collection hopper; 41. Material collection chamber;

[0033] 5. Discharge pipe; 51. Control valve;

[0034] 6. Pleated dust collector filter element;

[0035] 7. Operating door; 71. Observation window;

[0036] 8. Brushing mechanism; 81. Mounting bracket; 82. Cleaning brush. Detailed Implementation

[0037] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0038] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] The following is for reference. Figures 1-6 This invention describes a gas-powder separation device 100 after coal powder sampling according to an embodiment of the present invention.

[0041] like Figure 1 and Figure 2 As shown, the gas-powder separation device 100 after coal powder sampling according to an embodiment of the present invention includes a separation box 1 and a filter screen 2.

[0042] Specifically, such as Figures 1-3 As shown, the separation box 1 has a cavity 11. The separation box 1 has an inlet 12 and an outlet 13 communicating with the cavity 11 at both ends along a first direction. At least a portion of the filter screen 2 is disposed within the cavity 11. There are multiple filter screens 2, spaced apart along the first direction. Each filter screen 2 has multiple filter holes, and the diameter of the filter holes on the filter screen 2 decreases sequentially from the inlet 12 to the outlet 13.

[0043] The gas-powder separator 100 can be connected to a coal powder sampling device. In the specific gas-powder separation process, the mixture of coal powder and gas is first fed into the separator 1 through the inlet 12. The mixture continues to flow towards the outlet 13 within the cavity 11. During the flow, the mixture passes through multiple filter plates 2, which have multiple filter holes. As the mixture passes through the filter holes, the coal powder and gas are separated, thus achieving filtration.

[0044] In the direction from the feed inlet 12 to the discharge outlet 13, the pore size of the filter screen plate 2 decreases sequentially. Therefore, coal powder particles of different sizes will be intercepted by the filter screen plates 2, thereby achieving the classification of coal powder particles.

[0045] By setting multiple filter screens 2 with different pore diameters, the graded filtration of coal powder particles is achieved, which enables coal powder particles of different sizes to be effectively separated, improving the accuracy and reliability of coal quality testing, and also improving the convenience of using coal powder. It can avoid the subsequent additional particle grading work, saving the workload and time cost of testing personnel.

[0046] The entire device has a simple structure and is easy to operate. It can effectively separate coal powder from gas after coal powder sampling and classify coal powder particles, thereby improving the accuracy and efficiency of coal quality testing.

[0047] According to the embodiment of the present invention, the coal powder sampling gas-powder separation device 100, by setting multiple filter screen plates 2 arranged at intervals along a first direction in the separation box 1, and the filter screen plates 2 having multiple filter holes, the pore size of the filter holes on the filter screen plates 2 decreases sequentially from the feed inlet 12 to the discharge outlet 13, which can realize the graded filtration of coal powder particles, so that coal powder particles of different sizes can be effectively separated, improving the accuracy, reliability and efficiency of coal quality testing, and also improving the convenience of using coal powder. It can avoid the subsequent additional particle grading processing work, saving the workload and time cost of testing personnel.

[0048] In some embodiments of this utility model, such as Figures 1-3 As shown, the top of the separation box 1 is provided with a slot 14 communicating with the cavity 11. The filter screen 2 passes through the slot 14, and the top of the filter screen 2 extends out of the separation box 1. Multiple slots 14 are arranged at intervals along a first direction, forming a linear array. Each slot 14 corresponds to a filter screen 2, with one filter screen 2 inserted into each slot 14. The bottom of the filter screen 2 extends into the interior of the separation box 1, and the top of the filter screen 2 extends from the slot 14 to the top outside the separation box 1. The slots 14 facilitate the installation and removal of the filter screen 2. When it is necessary to remove the filter screen 2, it can be pulled upwards from the slot 14 for easy cleaning or replacement.

[0049] In some embodiments of this utility model, such as Figure 4 and Figure 5 As shown, the gas-powder separation device 100 after coal powder sampling also includes a vibrator 3. The vibrator 3 is connected to the top of the filter screen plate 2 and is located outside the separation box 1. The vibrator 3 is used to drive the filter screen plate 2 to vibrate. The vibrator 3 is installed on the surface of the filter screen plate 2 near its top. By installing the vibrator 3 on the surface of the filter screen plate 2, vibration will be generated when the vibrator 3 is working, thereby driving the filter screen plate 2 to vibrate. This vibration can effectively shake off the coal powder attached to the surface of the filter screen plate 2 quickly, preventing the filter screen plate 2 from clogging, thereby maintaining the filtration efficiency.

[0050] In some embodiments of this utility model, such as Figures 1-3As shown, the gas-powder separation device 100 after coal powder sampling also includes a collection hopper 4, which is connected to the bottom of the separation box 1. Each filter screen plate 2 is provided with a collection hopper 4 on the side near the feed inlet 12 along the first direction. The collection hopper 4 defines a collection cavity 41, the upper end of which is open and communicates with the cavity 11. At least part of the top of the collection hopper 4 abuts against the bottom of the filter screen plate 2. The first direction is perpendicular to the vertical direction.

[0051] Multiple collection hoppers 4 are fixedly connected to the bottom of the separator 1. Each collection hopper 4 is matched with a filter screen 2, so that the coal powder particles separated by the filter screen 2 can fall into the collection chamber 41 of the collection hopper 4, and be discharged after being collected by the corresponding collection hopper 4. In the top-to-bottom direction, the side wall of the collection chamber 41 is inclined towards the center line of the collection chamber 41, so that the coal powder particles can be discharged along the inclined wall of the collection hopper 4.

[0052] In some embodiments of this utility model, such as Figures 1-4 As shown, the bottom end of the hopper 4 is connected to a discharge pipe 5, and a control valve 51 is installed inside the discharge pipe 5. The control valve 51 is used to control the opening and closing of the discharge pipe 5. The coal powder particles separated by the filter screen 2 are collected by the hopper 4 and finally discharged through the discharge pipe 5. The control valve 51 can control the opening and closing of the discharge pipe 5, which facilitates the control of the discharge of coal powder.

[0053] In some embodiments of this utility model, such as Figure 2 and Figure 4 As shown, the coal powder separation device 100 after coal powder sampling also includes a pleated dust collector filter element 6. The pleated dust collector filter element 6 is located between the filter screen plate 2 closest to the discharge port 13 and the discharge port 13, and is used to filter coal powder in the air. A receiving cavity 17 is provided inside the separation box 1 near the discharge port 13, that is, the receiving cavity 17 is defined between the filter screen plate 2 closest to the discharge port 13 and the inner wall of the separation box 1. The receiving cavity 17 is filled with the pleated dust collector filter element 6. During the separation of coal powder and gas, after the mixture of coal powder and gas passes through the filter screen plate 2, it will be further filtered by the pleated dust collector filter element 6. The pleated dust collector filter element 6 can remove fine coal powder particles and other impurities in the gas, ensuring the cleanliness of the gas discharged from the discharge port 13.

[0054] In some embodiments of this utility model, such as Figure 1 , Figure 3 and Figure 4 As shown, the separation box 1 has an operation port 18 on one side along the second direction. The separation box 1 is connected to an operation door 7, which blocks the operation port 18. The operation door 7 has an observation window 71, which is a transparent tempered glass piece. The first direction, the second direction, and the up and down direction are perpendicular to each other.

[0055] An operating door 7 is installed on the separation box 1. The operating door 7 is opposite to the pleated dust collector filter element 6 in the second direction. Opening the operating door 7 allows the pleated dust collector filter element 6 to be taken out of the receiving cavity 17 or inserted into the receiving cavity 17, facilitating cleaning or replacement of the pleated dust collector filter element 6. An observation window 71 allows for easy observation of the condition of the pleated dust collector filter element 6 inside the receiving cavity 17, enabling timely cleaning or replacement of the pleated dust collector filter element 6.

[0056] The operating door 7 is rotatably connected to the separation box 1, for example, the operating door 7 and the separation box 1 are hinged. The operating door 7 and the separation box 1 can also be detachably connected, for example, the operating door 7 and the separation box 1 are screwed or snapped together, which makes it easier to open the operating door 7 and reduces the difficulty of operation.

[0057] In some embodiments of this utility model, such as Figure 2 and Figure 6 As shown, a brushing mechanism 8 is connected to the inner top wall of the separation box 1. Each filter screen 2 is provided with a brushing mechanism 8 on both sides along the first direction. The brushing mechanism 8 is used to brush the filter screen 2. When it is necessary to clean the filter screen 2, the filter screen 2 can be pulled upward from the cavity 11. At the same time as the filter screen 2 is pulled out, the brushing mechanism 8 will brush the surface of the filter screen 2 to help remove the coal dust particles attached to the surface of the filter screen 2.

[0058] In some embodiments of this utility model, such as Figure 2 and Figure 6 As shown, the brushing mechanism 8 includes a mounting frame 81 and a cleaning brush 82. The mounting frame 81 is connected to the inner top wall of the separation box 1. The cleaning brush 82 is connected to the mounting frame 81 and is located on the side of the mounting frame 81 along the first direction near the filter screen 2. The end of the cleaning brush 82 away from the mounting frame 81 abuts against the filter screen 2.

[0059] Each filter screen plate 2 is provided with a mounting bracket 81 on both sides along the first direction. The cleaning brush 82 contacts the filter screen plate 2. When the filter screen plate 2 is pulled upward from the cavity 11, the cleaning brush 82 will sweep the surface of the filter screen plate 2 at the same time as the filter screen plate 2 is pulled out, thereby removing the coal powder particles attached to the surface of the filter screen plate 2.

[0060] In some embodiments of this utility model, such as Figures 1-5 As shown, a lifting handle 21 is fixedly connected to the top of the filter screen plate 2, and there are multiple lifting handles 21 on each filter screen plate 2. Specifically, two lifting handles 21 are fixedly connected to the top of the filter screen plate 2, and the two lifting handles 21 are symmetrically distributed about the filter screen plate 2, which makes it easy for the operator to take the filter screen plate 2 out of the separation box 1 by lifting the handles 21, thus reducing the difficulty of operation.

[0061] In some embodiments of this utility model, such as Figures 1-4 As shown, a flange 15 is fixedly connected to the input end of the feed inlet 12. The flange 15 is annular and is arranged around the feed inlet 12. The flange 15 can provide mounting points and support points, facilitating the connection of the gas-powder separator 100 to devices such as coal powder sampling devices.

[0062] In some embodiments of this utility model, such as Figures 1-4 As shown, each of the four corners of the bottom of the separation box 1 is fixedly connected to a support leg 16. The four support legs 16 support the gas-powder separation device 100 after coal powder sampling, which can ensure the stability and reliability of the gas-powder separation device 100 after coal powder sampling.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A gas-powder separation device after coal powder sampling, characterized in that, include: A separation box having a cavity inside, and an inlet and an outlet communicating with the cavity at both ends along a first direction; A filter screen, at least a portion of which is disposed within the cavity, wherein there are multiple filter screens spaced apart along the first direction, and each filter screen has multiple filter holes, wherein the diameter of the filter holes on the filter screen decreases sequentially in the direction from the feed inlet to the discharge outlet.

2. The gas-powder separation device after coal powder sampling according to claim 1, characterized in that, The top of the separation box is provided with a slot communicating with the cavity, and the filter screen is inserted through the slot with the top end of the filter screen extending out of the separation box.

3. The gas-powder separation device after coal powder sampling according to claim 1, characterized in that, Also includes: A vibrator is connected to the top of the filter screen and located outside the separation box. The vibrator is used to drive the filter screen to vibrate.

4. The gas-powder separation device after coal powder sampling according to claim 1, characterized in that, Also includes: A material collection hopper is connected to the bottom of the separation box. Each filter screen is provided with a material collection hopper on the side near the feed inlet along the first direction. The material collection hopper defines a material collection cavity. The upper end of the material collection cavity is open and communicates with the cavity. At least part of the top of the material collection hopper abuts against the bottom end of the filter screen. The first direction is perpendicular to the vertical direction.

5. The gas-powder separation device after coal powder sampling according to claim 4, characterized in that, The bottom end of the material collection hopper is connected to a discharge pipe, and a control valve is installed inside the discharge pipe to control the opening and closing of the discharge pipe.

6. The gas-powder separation device after coal powder sampling according to claim 1, characterized in that, Also includes: A pleated dust collector filter element is disposed between the filter screen plate closest to the discharge port and the discharge port, and is used to filter coal dust in the air.

7. The gas-powder separation device after coal powder sampling according to claim 6, characterized in that, The separation box has an operating port on one side along the second direction. An operating door is connected to the separation box. The operating door blocks the operating port. An observation window is provided on the operating door. The observation window is a transparent tempered glass piece. The first direction, the second direction, and the up and down direction are perpendicular to each other.

8. The gas-powder separation device after coal powder sampling according to claim 1, characterized in that, The inner top wall of the separation box is connected to a brushing mechanism, and each of the filter screens is provided with the brushing mechanism on both sides along the first direction. The brushing mechanism is used to brush the filter screen.

9. The gas-powder separation device after coal powder sampling according to claim 8, characterized in that, The brushing mechanism includes: Mounting bracket, which is connected to the inner top wall of the separation box; A cleaning brush is connected to the mounting bracket. The cleaning brush is located on the side of the mounting bracket along the first direction near the filter screen, and the end of the cleaning brush facing away from the mounting bracket abuts against the filter screen.

10. The gas-powder separation device after coal powder sampling according to claim 1, characterized in that, The top of the filter screen is fixedly connected to a lifting handle, and there are multiple lifting handles on each filter screen. And / or, a flange is fixedly connected to the input end of the feed inlet, the flange being annular and arranged around the feed inlet; And / or, each of the four bottom corners of the separation box is fixedly connected to a support leg.

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