Pulverized coal filtering and collecting device for coal bed gas exploitation

Abstract

The utility model discloses a pulverized coal filtering and collecting device for coal bed gas exploitation, which comprises a filtering and collecting box, the filtering and collecting box is of a hollow structure, an air inlet pipe is arranged at the upper end of the side face of the filtering and collecting box, one end of the air inlet pipe is arranged in the filtering and collecting box, and the other end of the air inlet pipe is arranged outside the filtering and collecting box. An air outlet pipe is arranged at the upper end of the side face, away from the air inlet pipe, of the filtering and collecting box, one end of the air outlet pipe is arranged in the filtering and collecting box, the other end of the air outlet pipe is arranged outside the filtering and collecting box, a filtering assembly is arranged on the filtering and collecting box, and a cleaning assembly is arranged at the lower end in the filtering and collecting box and arranged below the filtering assembly. The utility model relates to the technical field of coalbed methane exploitation, in particular to a pulverized coal filtering and collecting device for coalbed methane exploitation.

Description

Technical Field

[0001] The utility model relates to the technical field of coal bed gas mining, in particular to a coal powder filtering and collecting device used for coal bed gas mining. Background Art

[0002] Coalbed methane refers to hydrocarbon gas with methane as the main component, which exists in coal seams and is mainly adsorbed on the surface of coal matrix particles. Some of it is free in coal pores or dissolved in coal seam water. It is a semi-raw mineral resource of coal and an unconventional natural gas.

[0003] A lot of coal powder will be produced in the process of coalbed methane mining. If the coal powder is not filtered, a large amount of coal powder may clog the pump body and cause pump jam, thus affecting the mining efficiency. The existing method of coal powder treatment is to set up a filter to filter, but after the filter has worked for a long time, a large amount of coal powder will still cause clogging of the filter. The filter needs to be disassembled and cleaned and then reinstalled for filtering, which has low work efficiency. Utility Model Content

[0004] In view of the above situation, in order to remedy the above existing defects, the utility model provides a coal powder filtering and collecting device for coalbed methane mining.

[0005] The utility model provides the following technical solution: the utility model proposes a coal powder filtering and collecting device for coalbed methane mining, comprising a filter collecting box, the filter collecting box being a hollow structure, an air inlet pipe being provided at the upper end of the side surface of the filter collecting box, one end of the air inlet pipe being provided in the filter collecting box and the other end being provided outside the filter collecting box, an air outlet pipe being provided at the upper end of the side surface of the filter collecting box away from the air inlet pipe, one end of the air outlet pipe being provided in the filter collecting box and the other end being provided outside the filter collecting box, a filter assembly being provided on the filter collecting box, a cleaning assembly being provided at the lower end of the filter collecting box, the cleaning assembly being provided below the filter assembly; the filter assembly comprises a rotating shaft, the two ends of the rotating shaft being rotatably provided on the inner side wall of the filter collecting box, a driving motor being provided on the filter collecting box, the output end of the driving motor being connected to the rotating shaft, a supporting plate being symmetrically provided on the rotating shaft, the supporting plate being provided with two groups, and the opposite sides of the supporting plate The filter screen is provided with a slide groove, one end of the slide groove close to the rotating shaft is provided with a connecting spring, and a slider is movably provided in the slide groove, and the slider is connected to the connecting spring, and a filter screen is connected between the sliders, and a magnetic plate is provided at the end of the filter screen plate away from the rotating shaft, and a lifting coil is embedded in the upper wall of the filter collecting box, and the lifting coil is arranged above the rotating shaft. Before gas is introduced into the ventilation pipe, the driving motor is started, the driving motor drives the rotating shaft to rotate, and the rotating shaft drives the support plate to rotate, and the support plate drives the filter screen plate to rotate through the slider. When the filter screen plate rotates below the midpoint of the connecting line of the inlet pipe and the outlet pipe, the lifting coil is energized, the lifting coil generates a magnetic field, generates attraction to the magnetic plate, and the magnetic plate drives the filter screen plate to move upward, so that the filter screen plate moves between the inlet pipe and the outlet pipe, and then gas is introduced into the inlet pipe, enters the filter screen plate to filter and separate the gas, so that the coal slag falls into the filter collecting box, and the filtered gas is discharged through the outlet pipe.

[0006] Furthermore, the cleaning component includes a rotating plate, which can be rotatably arranged at the lower end of the filter collection box, and a shaking coil is embedded in the rotating plate, and the shaking coil is arranged below the rotating shaft. A cleaning coil is symmetrically arranged on the rotating plate, and the cleaning coil is symmetrically arranged on both sides of the shaking coil. A fixed plate is symmetrically arranged on the rotating plate, and the fixed plate is provided with two groups. A torsion spring is arranged on the opposite side of the fixed plate, and a connecting rod is connected between the torsion springs. A magnetic block is arranged at one end of the connecting rod away from the torsion spring. When the filter screen is clogged with coal slag, the filter assembly is used to rotate the clogged filter screen to the top of the rotating plate, and the shaking coil is energized to make the shaking coil move around. A magnetic field is generated around the cleaning coil, which generates attraction on the magnetic plate, causing the filter plate to move downward. At this time, the connecting spring is in a stretched state. After the shaking coil is powered off, the elastic force between the connecting springs is repeated to make the filter plate shake up and down, shaking the coal slag off the filter plate. At the same time, the cleaning coil is energized to generate a magnetic field around the cleaning coil, which generates a repulsive force on the magnetic block, causing the magnetic block to rotate with the rotating rod, and the torsion spring generates torsion to make the magnetic block hit the filter plate. The cleaning coil is disconnected, and the rotating rod and the magnetic block are reset under the action of the torsion spring. The above operation is repeated to make the magnetic block continuously hit the filter plate to further clean the filter plate.

[0007] Among them, a rocker is rotatably provided at the lower end of the outer wall of the filter collection box, and the rocker is connected to the rotating plate. The setting of the rocker facilitates turning the rotating plate so that the coal slag above the rotating plate falls to the bottom of the filter collection box for easy collection and processing.

[0008] Preferably, a disassembly plate is detachably provided at the lower end of the side of the filter collection box, and the disassembly plate is arranged on the side of the filter collection box adjacent to the rocker, so as to facilitate cleaning out the coal slag in the filter collection box for further processing.

[0009] Furthermore, a pipe connector is provided at one end of the air inlet pipe away from the filter collection box, and the pipe connector is also provided at one end of the air outlet pipe away from the filter collection box, so as to facilitate connection between the device and other equipment and improve the practicability of the device.

[0010] The utility model adopting the above structure proposes a coal powder filtering and collecting device for coal bed gas mining, which has the following beneficial effects:

[0011] 1. Through the setting of filtering components, the coal slag in the coalbed methane can be filtered out to avoid damage to other equipment and affect the progress of the project.

[0012] 2. In order to prevent the filter screen from being blocked, a cleaning component is provided, which can clean the filter screen without disassembling the filter screen, so that the filter screen can be reused, saving resources and improving work efficiency.

[0013] 3. The rocker and the disassembly plate are used to turn the rotating plate so that the coal slag above the rotating plate falls to the bottom of the filter collection box, which is convenient for cleaning the coal slag in the filter collection box out of the filter collection box for further processing.

[0014] 4. Due to the setting of the connecting parts, it is convenient to connect the device with other equipment, thereby improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of a coal powder filtering and collecting device for coal bed gas mining proposed by the utility model;

[0017] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0018] Figure 3 This is a side view of a coal powder filtering and collecting device for coal bed gas mining proposed by the utility model;

[0019] Figure 4 This is a structural schematic diagram of a filter assembly in a coal powder filtering and collecting device for coalbed methane mining proposed by the utility model;

[0020] Figure 5 The utility model provides a top view of a fixed plate, a torsion spring, a connecting rod and a magnetic block in a coal powder filtering and collecting device for coalbed methane mining.

[0021] Among them, 1. filter collection box, 2. air inlet pipe, 3. air outlet pipe, 4. filter assembly, 5. cleaning assembly, 6. rotating shaft, 7. drive motor, 8. support plate, 9. slide groove, 10. connecting spring, 11. slider, 12. filter screen plate, 13. lifting coil, 14. magnetic plate, 15. shaking coil, 16. cleaning coil, 17. fixing plate, 18. torsion spring, 19. connecting rod, 20. magnetic block, 21. rocker, 22. disassembly plate, 23. pipe connector, 24. rotating plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the present embodiment provides a coal powder filtering and collecting device for coalbed methane mining, including a filtering and collecting box 1, which is a hollow structure. An air inlet pipe 2 is provided at the upper end of the side of the filtering and collecting box 1, one end of the air inlet pipe 2 is arranged in the filtering and collecting box 1 and the other end is arranged outside the filtering and collecting box 1, an air outlet pipe 3 is provided at the upper end of the side of the filtering and collecting box 1 away from the air inlet pipe 2, one end of the air outlet pipe 3 is arranged in the filtering and collecting box 1 and the other end is arranged outside the filtering and collecting box 1, a pipe connector 23 is provided at the end of the air inlet pipe 2 away from the filtering and collecting box 1, and the pipe connector 23 is also provided at the end of the air outlet pipe 3 away from the filtering and collecting box 1, a filtering assembly 4 is provided on the filtering and collecting box 1, and a cleaning assembly 5 is provided at the lower end of the filtering and collecting box 1. The processing component 5 is arranged below the filter component 4; the filter component 4 includes a rotating shaft 6, both ends of the rotating shaft 6 are rotatably arranged on the inner wall of the filter collection box 1, the filter collection box 1 is provided with a driving motor 7, the output end of the driving motor 7 is connected to the rotating shaft 6, the rotating shaft 6 is symmetrically provided with support plates 8, the support plates 8 are provided with two groups, and a slide groove 9 is provided on the opposite side of the support plate 8. A connecting spring 10 is provided at one end of the slide groove 9 close to the rotating shaft 6, and a slider 11 is movably provided in the slide groove 9, the slider 11 is connected to the connecting spring 10, and a filter screen plate 12 is connected between the sliders 11, and a magnetic plate 14 is provided at one end of the filter screen plate 12 away from the rotating shaft 6. A lifting coil 13 is embedded in the upper wall of the filter collection box 1, and the lifting coil 13 is arranged above the rotating shaft 6.

[0025] like Figure 1 , Figure 5 As shown, the cleaning assembly 5 includes a rotating plate 24, which can be rotatably arranged at the lower end of the filter collection box 1, and a shaking coil 15 is embedded in the rotating plate 24, and the shaking coil 15 is arranged below the rotating shaft 6. A cleaning coil 16 is symmetrically arranged on the rotating plate 24, and the cleaning coil 16 is symmetrically arranged on both sides of the shaking coil 15. A fixed plate 17 is symmetrically arranged on the rotating plate 24, and two groups of fixed plates 17 are provided. Torsion springs 18 are provided on the opposite surface of the fixed plate 17, and connecting rods 19 are connected between the torsion springs 18. A magnetic block 20 is provided at the end of the connecting rod 19 away from the torsion spring 18.

[0026] like Figure 1As shown, a rocker 21 is rotatably provided at the lower end of the outer wall of the filter collection box 1 , and the rocker 21 is connected to a rotating plate 24 . A disassembly plate 22 is detachably provided at the lower end of the side surface of the filter collection box 1 .

[0027] When in use, before the gas is introduced into the ventilation pipe, the driving motor 7 is started, the driving motor 7 drives the rotating shaft 6 to rotate, the rotating shaft 6 drives the supporting plate 8 to rotate, the supporting plate 8 drives the filter screen plate 12 to rotate through the slider 11, when the filter screen plate 12 rotates to below the midpoint of the connecting line between the inlet pipe 2 and the outlet pipe 3, the lifting coil 13 is energized, the lifting coil 13 generates a magnetic field, generates an attraction to the magnetic plate 14, and the magnetic plate 14 drives the filter screen plate 12 to move upward, so that the filter screen The plate 12 is moved between the air inlet pipe 2 and the air outlet pipe 3, and then the air is introduced into the air inlet pipe 2, and enters the filter plate 12 to filter and separate the air, so that the coal slag falls into the filter collection box 1, and the filtered gas is discharged through the air outlet pipe 3. When the filter plate 12 is blocked by the coal slag, the blocked filter plate 12 is rotated to the top of the rotating plate 24 by using the driving motor 7 and the rotating shaft 6, and the shaking coil 15 is energized to generate a magnetic field around the shaking coil 15, which generates attraction to the magnetic plate 14. The filter screen plate 12 is moved downward, and the connecting spring 10 is in a stretched state. After the shaking coil 15 is powered off, the elastic force between the connecting springs 10 is cooperated to repeat the above operation, so that the filter screen plate 12 shakes and oscillates up and down, and the coal slag on the filter screen plate 12 is shaken off. At the same time, the cleaning coil 16 is energized, and a magnetic field is generated around the cleaning coil 16, which produces a repulsive force on the magnetic block 20, so that the magnetic block 20 rotates with the rotating rod, and the torsion spring 18 generates a torsion force, so that the magnetic block 20 hits the filter screen plate 12, and the cleaning coil 16 is disconnected. Under the action of the torsion spring 18, the rotating rod and the magnetic block 20 are reset, and the above operation is repeated, so that the magnetic block 20 continuously hits the filter screen plate 12 to further clean the filter screen plate 12. When the coal slag above the rotating plate 24 accumulates more, the rocker 21 is rotated, and the rocker 21 rotates with the rotating plate 24, so that the coal slag above the rotating plate 24 falls to the bottom of the filter collecting box 1, and the coal slag is cleaned out by opening the disassembly plate 22.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, material or apparatus including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, material or apparatus.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal powder filtering and collecting device for coal bed gas mining, characterized by: The filter collecting box comprises a filter collecting box, the filter collecting box is a hollow structure, an air inlet pipe is arranged at the upper end of the side surface of the filter collecting box, one end of the air inlet pipe is arranged in the filter collecting box and the other end is arranged outside the filter collecting box, an air outlet pipe is arranged at the upper end of the side surface of the filter collecting box away from the air inlet pipe, one end of the air outlet pipe is arranged in the filter collecting box and the other end is arranged outside the filter collecting box, a filter assembly is arranged on the filter collecting box, a cleaning assembly is arranged at the lower end of the filter collecting box, and the cleaning assembly is arranged below the filter assembly; the filter assembly comprises a rotating shaft, and both ends of the rotating shaft can be rotatably arranged A driving motor is provided on the inner wall of the filter collection box, and the output end of the driving motor is connected to the rotating shaft. Support plates are symmetrically provided on the rotating shaft, and two groups of support plates are provided. A slide groove is provided on the opposite side of the support plate. A connecting spring is provided at one end of the slide groove close to the rotating shaft. A slider is movably provided in the slide groove, and the slider is connected to the connecting spring. A filter screen is connected between the sliders, and a magnetic plate is provided at one end of the filter screen away from the rotating shaft. A lifting coil is embedded in the upper wall of the filter collection box, and the lifting coil is arranged above the rotating shaft.

2. The device for filtering and collecting coal powder for coalbed methane mining according to claim 1, characterized in that: The cleaning assembly includes a rotating plate, which can be rotatably arranged at the lower end of the filter collection box. A shaking coil is embedded in the rotating plate, and the shaking coil is arranged below the rotating shaft. Cleaning coils are symmetrically arranged on the rotating plate, and the cleaning coils are symmetrically arranged on both sides of the shaking coil. A fixed plate is symmetrically arranged on the rotating plate, and two groups of fixed plates are arranged on the opposite side of the fixed plate. A torsion spring is arranged, and a connecting rod is connected between the torsion springs. A magnetic block is arranged at the end of the connecting rod away from the torsion spring.

3. The device for filtering and collecting coal powder for coalbed methane mining according to claim 2, characterized in that: A rocker is rotatably provided at the lower end of the outer side wall of the filtering and collecting box, and the rocker is connected to the rotating plate.

4. The coal powder filtering and collecting device for coal bed gas mining according to claim 3 is characterized in that: A disassembly plate is detachably provided at the lower end of the side surface of the filter collection box, and the disassembly plate is arranged on the side surface of the filter collection box adjacent to the rocker.

5. The device for filtering and collecting coal powder for coalbed methane mining according to claim 4, characterized in that: A pipe connector is provided at one end of the air inlet pipe away from the filter collection box, and the pipe connector is also provided at one end of the air outlet pipe away from the filter collection box.

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