Pulverized coal pipeline deposition prevention device based on hydrocyclone

Abstract

The invention relates to the technical field of ventilation equipment, in particular to a pulverized coal pipeline anti-deposition device based on a cyclone, which comprises a cyclone body, a filter assembly, a cleaning assembly and a driving assembly, the cleaning assembly comprises a cleaning brush, and the driving assembly is used for driving the cleaning brush to intermittently contact with a filter plate. In the contact process, the cleaning brush is driven to rotate in the circumferential direction for cleaning; the cleaning brush which can be intermittently close to the filter plate is used for cleaning the filter plate, the situation that the cleaning brush is continuously contacted and abraded with the filter plate for a long time, and consequently the cleaning brush is seriously worn is avoided, the service life of the cleaning brush is prolonged, the cleaning brush is intermittently cleaned in the ventilation process, ventilation operation is not affected, and the ventilation efficiency is improved. Cleaning work is not needed after ventilation work is stopped, so that continuous ventilation work is guaranteed, in the process that the cleaning brush gets close to the filter plate, the cleaning head of the cleaning brush can stretch into the filter holes of the filter plate to push out dust in the filter holes, and then the cleaning effect is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ventilation equipment, and in particular to a coal dust pipeline deposition prevention device based on a cyclone. BACKGROUND

[0002] In mine exploitation operations, the ventilation system is a key facility for ensuring safe production and the health of operating personnel in the mine, and the mine cyclone, as a core component of the ventilation system, separates part of the dust in the airflow through centrifugal force, and at the same time undertakes the important task of guiding the airflow, conveying fresh air, and discharging harmful gases. It is like a "respiratory system" in the mine, and its performance directly affects the quality of the entire mine operating environment.

[0003] When the cyclone is working, the mine exploitation environment often contains a large amount of dust, which causes a large amount of dust to adhere to the airflow transmitted by the cyclone. At present, most mine cyclones only achieve dust isolation by setting a filter plate inside the cyclone for pre-filtering. However, as the intensity of mine exploitation operations continues to increase, the amount of dust generated in the surrounding environment gradually increases, which causes a large amount of dust to accumulate on the through-holes on the surface of the filter plate, significantly increasing the ventilation resistance and greatly reducing the ventilation efficiency of the cyclone. Therefore, the filter plate needs to be cleaned. In the prior art, a brush head that is always in contact with the filter plate is used for cleaning work. However, when the brush head cleans during the working process of the cyclone, the brush head will always block some filter holes, causing poor ventilation. When the cyclone is closed to clean specifically, it will cause the ventilation operation to be interrupted. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the problem that the cyclone in the prior art generally uses a brush head that is always in contact with the filter plate for cleaning work. However, when the brush head cleans during the working process of the cyclone, the brush head will always block some filter holes, causing poor ventilation. When the cyclone is closed to clean specifically, it will cause the ventilation operation to be interrupted. The present application provides a coal dust pipeline deposition prevention device based on a cyclone.

[0005] To solve the above technical problems, the present application adopts the following technical scheme: a coal dust pipeline deposition prevention device based on a cyclone, comprising: a cyclone body, inside which a flow-through cavity is formed; a filter assembly including a filter plate fixed at the top of the flow-through cavity; a cleaning assembly including a cleaning brush movably arranged below the filter plate to clean the filter plate; and a driving assembly for intermittently contacting the cleaning brush with the filter plate and rotating the cleaning brush in the circumferential direction to clean during the contacting process.

[0006] Further, the driving assembly comprises a rotating mechanism, a rotating column connected with the output end of the rotating mechanism and provided for mounting the cleaning brush, and a reciprocating mechanism sleeved outside the rotating column and used for driving the cleaning brush to approach or move away from the filter plate during the rotation of the rotating column.

[0007] Further, the reciprocating mechanism comprises a driving seat fixed in the flow cavity and a top rod mounted at the bottom of the cleaning brush and matched with the driving seat, the driving seat is provided with a notch to form a low position at the notch position and a high position at the rest position, and a transition surface is formed between the low position and the high position, and the cleaning brush is in contact with the filter plate when the top rod is matched with the high position of the driving seat.

[0008] Further, the reciprocating mechanism further comprises an annular frame fixed on the rotating column, a sleeve ring slidingly arranged between the driving seat and the annular frame, a limiting column penetrating through the annular frame and connected between the sleeve ring and the cleaning brush, and an elastic element sleeved outside the limiting column and limited between the sleeve ring and the annular frame, and the top rod is fixed at the bottom of the sleeve ring.

[0009] Further, the transition surface is an arc surface.

[0010] Further, the cleaning brush has a plurality of and is distributed in a circumferential direction of the rotating column, and the plurality of cleaning brushes are connected through a cleaning seat, and a limiting structure for limiting the cleaning seat and the rotating column in the circumferential direction is arranged between the cleaning seat and the rotating column.

[0011] Further, the limiting structure comprises a protrusion formed by a protruding inner circumferential wall of the cleaning seat and a sliding groove formed by a recessed outer circumferential wall of the rotating column for clamping the protrusion.

[0012] Further, the bottom of the top rod is in a spherical structure.

[0013] Further, the rotating mechanism comprises a rotating power member, a driving wheel connected with the output end of the rotating power member, a driven wheel fixedly sleeved outside the rotating column, and a synchronous belt wound on the driving wheel and the driven wheel.

[0014] Further, a support frame is fixed in the middle of the cyclone body, a connecting pipe is arranged between the support frame and the driving seat, an installation seat is fixed at the bottom of the cyclone body, an installation frame for mounting the rotating power member is fixed on the inner side of the installation seat, an external threaded seat and an internal threaded seat threadedly connected with the external threaded seat are mounted at the top of the cyclone body, and the filtering assembly is mounted on the inner side of the internal threaded seat.

[0015] The beneficial effects of the present application are: the cleaning brush of the present application is used to clean the filter plate intermittently, avoiding the cleaning brush from being in contact with the filter plate for a long time and being worn out, thereby prolonging the service life of the cleaning brush, and the cleaning brush is intermittently cleaned during the ventilation process, which does not affect the ventilation operation, and the cleaning work does not need to be performed after the ventilation operation is stopped, thereby ensuring the continuous ventilation operation, and in the process that the cleaning brush approaches the filter plate, the cleaning head of the cleaning brush can be inserted into the filter hole of the filter plate to push the dust in the filter hole out, thereby further improving the cleaning effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application is further described below in conjunction with the drawings and examples.

[0017] Figure 1 is a schematic diagram of the overall structure of the present application; Figure 2 is a schematic diagram of the structure inside the cyclone body of the present application; Figure 3 is a schematic diagram of the connection state structure of the reciprocating mechanism and the filter assembly of the present application; Figure 4 is a schematic diagram of the connection column and the rotating column of the present application in the separated state structure; Figure 5 is a schematic diagram of the connection mode structure of the cyclone body and the filter plate of the present application.

[0018] In the drawings: 1, cyclone body; 101, support frame; 102, connecting pipe; 103, mounting seat; 104, mounting frame; 105, external thread seat; 106, internal thread seat; 2, filter plate; 3, cleaning assembly; 301, cleaning brush; 302, cleaning seat; 4, driving assembly; 401, rotating column; 4011, sliding groove; 4012, protrusion; 402, driving seat; 4021, notch; 4022, transition surface; 403, top rod; 404, annular frame; 405, collar; 406, limiting column; 407, elastic element; 408, rotary power element; 409, driving wheel; 410, driven wheel; 411, synchronous belt; 412, connecting column; 4121, clamping seat; 4122, clamping block. DETAILED DESCRIPTION

[0019] The application will now be described in further detail with reference to the drawings. These drawings are simplified schematic illustrations which only show the basic structure of the application in a schematic manner, and therefore only show the features relevant to the application, and directions and references such as up, down, left, right, etc. can only be used to facilitate the description of the features in the drawings. The following detailed description is therefore not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and their equivalents.

[0020] With reference to Figure 1 and Figure 2 the application is a cyclone-based coal dust pipeline anti-deposition device, comprising: a cyclone body 1, inside which a flow-through cavity is formed, the top of which is formed with an inlet and the bottom of which is formed with an outlet a filter assembly, comprising a filter plate 2 fixed at the top of the flow-through cavity; a cleaning assembly 3, comprising a cleaning brush 301 movably arranged below the filter plate 2 to clean the filter plate 2, the filter plate 2 being provided with a plurality of filter holes, the cleaning head of the cleaning brush 301 corresponding to the positions of the filter holes; and a driving assembly 4 for driving the cleaning brush 301 to intermittently contact the filter plate 2 and rotate the cleaning brush 301 in the circumferential direction to clean during the contacting process, the cleaning brush 301 not only rotates in the circumferential direction to clean the filter plate 2, but also ascends and descends, the ascending process of the cleaning brush 301 being the process of approaching the filter plate 2, and the descending process being the process of moving away from the filter plate 2, the cleaning brush 301 being able to clean by rotating after contacting the filter plate 2; When performing ventilation work, when the dust-containing airflow enters from the inlet end of the cyclone body 1, the dust-containing airflow will first contact the filter plate 2, and the filter plate 2 will physically intercept the dust in the airflow by using its filter hole structure, so that the treated airflow is transmitted along the flow-through cavity and then discharged from the outlet end to perform ventilation work; When the dust gradually accumulates on the surface and the through hole of the filter plate 2, the ventilation efficiency is affected, the driving assembly 4 is started to drive the cleaning brush 301 to gradually approach the filter plate 2 and rotate around the filter plate 2 to clean. After a period of time, the cleaning brush 301 is automatically away from the filter plate 2. The cleaning brush 301 can realize intermittent contact with the filter plate 2 to clean, avoid the cleaning brush 301 from being worn out by long-time contact with the filter plate 2, thereby prolonging the service life of the cleaning brush 301. The cleaning brush 301 can clean intermittently during the ventilation process, which will not affect the ventilation operation, and the cleaning work does not need to be performed after the ventilation operation is stopped, thereby ensuring the continuous ventilation operation. In addition, during the process that the cleaning brush 301 approaches the filter plate 2, the cleaning head of the cleaning brush 301 can extend into the filter hole of the filter plate 2 to push the dust in the filter hole out, thereby further improving the cleaning effect. When the dust amount in the environment is large, the driving assembly 4 can be turned on for a long time to make the cleaning brush clean intermittently.

[0021] In some examples, the driving assembly 4 includes a rotating mechanism, a rotating column 401 connected with the output end of the rotating mechanism and used for installing the cleaning brush 301, and a reciprocating mechanism sleeved outside the rotating column 401 and used for driving the cleaning brush 301 to approach or move away from the filter plate 2 during the rotation of the cleaning brush 301 driven by the rotating column 401. The rotating column 401 penetrates through the filter plate 2 and is rotationally connected with the filter plate 2.

[0022] In some examples, the reciprocating mechanism includes a driving seat 402 fixed in the flow cavity and a top rod 403 installed at the bottom of the cleaning brush 301 and matched with the driving seat 402. The driving seat 402 is substantially annular and is provided with a notch 4021 to form a low position at the notch 4021 and a high position at the remaining positions. A transition surface 4022 is formed between the low position and the high position. When the cleaning brush 301 drives the top rod 403 to rotate around the rotating column 401, the top rod 403 is matched with the high position of the driving seat 402, and the cleaning brush 301 is in contact with the filter plate 2. When the top rod 403 is matched with the low position, the cleaning brush 301 moves away from the filter plate 2. When the top rod 403 is matched with the transition surface 4022, it is the process that the cleaning brush 301 gradually moves away from the filter plate 2 or the process that the cleaning brush 301 gradually approaches the filter plate 2.

[0023] In some examples, the reciprocating mechanism further comprises a ring-shaped frame 404 fixed on the rotating column 401, a sleeve ring 405 slidingly arranged between the driving seat 402 and the ring-shaped frame 404, a limiting column 406 passing through the ring-shaped frame 404 and connected between the sleeve ring 405 and the cleaning brush 301, and a plurality of elastic elements 407 sleeved outside the limiting column 406 and limited between the sleeve ring 405 and the ring-shaped frame 404, wherein the top rod 403 is fixed at the bottom of the sleeve ring 405, the elastic elements 407 can be springs, the limiting column 406 and the elastic elements 407 are both provided with a plurality of and are distributed at intervals in the circumferential direction, each elastic element 407 is sleeved on the corresponding limiting column 406, and one end of each elastic element 407 is connected with the sleeve ring 405 and the other end is connected with the ring-shaped frame 404.

[0024] In the embodiment, when the rotating column 401 rotates, the ring-shaped frame 404 and the cleaning brush 301 are driven to rotate synchronously, the sleeve ring 405 is driven to rotate by the ring-shaped frame 404 through the limiting column 406, and the top rod 403 moves reciprocally along the upper surface of the driving seat 402 under the action of the sleeve ring 405. When the end of the top rod 403 is at the notch 4021 of the driving seat 402606, i.e. at the low position, the top rod 403 is driven by the sleeve ring 405 to gradually contact the transition surface 4022 and gradually reach the high position under the driving of the transition surface 4022, thereby pushing the sleeve ring 405 to move close to the ring-shaped frame 404. When the sleeve ring 405 moves close to the ring-shaped frame 404, the cleaning brush 301 is pushed by the sleeve ring 405 through the limiting column 406, so that the cleaning head of the cleaning brush 301 can contact the filter plate 2, thereby enabling the rotating cleaning brush 301 to clean the surface and the through hole of the filter plate 2. When the cleaning brush 301 is in contact with the filter plate 2 by being pushed by the sleeve ring 405 through the limiting column 406, the elastic elements 407 are compressed under the force. When the top rod 403 is back to the notch 4021, the elastic elements 407 push the sleeve ring 405 through the elastic force of the elastic elements 407 under the influence of the loss of external force, so that the sleeve ring 405 pulls the cleaning brush 301 through the limiting column, and the cleaning brush 301 is separated from the filter plate 2. In this way, as the connecting column continues to rotate, the cleaning brush 301 can intermittently contact the filter plate 2 for cleaning work in the process of rotation, thereby avoiding the cleaning brush 301 from continuously contacting and rubbing the filter plate 2 for a long time, so as to prevent the cleaning brush 301 from being seriously worn out, and thereby prolonging the service life of the cleaning brush 301.

[0025] In some examples, the transition surface 4022 is an arc surface, and a circular arc is adopted between the low position and the high position, so that the top rod 403 can smoothly switch between the low position and the high position.

[0026] In some examples, the cleaning brushes 301 are provided in plurality and are distributed along the circumference of the rotating column 401 in a windmill-like manner. The cleaning brushes 301 are connected by the cleaning seat 302. The cleaning seat 302 and the rotating column 401 are provided with a limiting structure for limiting the circumferential displacement of the two. Meanwhile, the limiting structure does not limit the axial displacement of the cleaning seat 302. In the process of synchronous rotation of the rotating column 401 driving the cleaning brushes 301, the cleaning brushes 301 can still be lifted and lowered.

[0027] In some examples, the limiting structure includes protrusions formed by the inner circumferential wall of the cleaning seat 302 and grooves 4011 formed by the outer circumferential wall of the rotating column 401 for the protrusions to be inserted into. The grooves 4011 and the protrusions are provided in plurality and are distributed along the circumference. Each protrusion slides in the corresponding groove 4011, and each groove 4011 extends axially along the rotating column 401. When the rotating column 401 rotates, the synchronous rotation of the cleaning seat 302 can be driven by the cooperation of the protrusions and the grooves 4011. In turn, the cleaning brushes 301 outside the cleaning seat 302 are driven to make a circular motion around the axis of the rotating column 401. In this way, the rotation of the cleaning brushes 301 can further clean the dust on the surface of the filter plate 2 and in the filter holes, so as to avoid the surface of the filter plate 2 and the filter holes being blocked by the dust, which may increase the ventilation resistance and affect the ventilation efficiency.

[0028] In some examples, the bottom of the top rod 403 is provided in a spherical structure, so that the top rod 403 can be smoothly switched between the low position and the high position.

[0029] In some examples, the rotating mechanism includes a rotating power source 408, a driving wheel 409 connected to the output end of the rotating power source 408, a driven wheel 410 fixedly sleeved on the outside of the rotating column 401, and a synchronous belt 411 wound on the driving wheel 409 and the driven wheel 410. The rotating power source 408 can be a motor. When the rotating power source 408 is started, the driving wheel 409 is driven to rotate, the driving wheel 409 drives the driven wheel 410 to rotate through the synchronous belt 411, and the rotating column 401 is driven to rotate by the driven wheel 410. Preferably, in order to realize the quick disassembly of the device, the driven wheel 410 is detachably connected to the rotating column 401 through a connecting column 412. The end of the rotating column 401 is provided with a plurality of protrusions 4012, and the end of the connecting column 412 is provided with a clamping seat 4121. The clamping seat 4121 is formed with clamping blocks 4022 or clamping grooves matched with the protrusions 4012.

[0030] In some examples, the cyclone body 1 is fixed with a support frame 101 in the middle part, the support frame 101 is in a cross structure, which does not affect the gas flow, the support frame 101 is provided with a connecting pipe 102 between the driving seat 402, the connecting pipe 102 is sleeved outside the rotating column 401, and the connecting pipe 102 does not affect the movement of the rotating column 401 because of the gap between the two; The bottom of the cyclone body 1 is fixed with a mounting seat 103, the inside of the mounting seat 103 is fixed with a mounting frame 104 for installing the rotating power member 408, the mounting frame 104 is in a cross structure, thus not affecting the gas flow.

[0031] The top of the cyclone body 1 is provided with an external thread seat 105 and an internal thread seat 106 which is threadedly connected with the external thread seat 105, the filter assembly is installed inside the internal thread seat 106, the internal thread seat 106 drives the filter assembly connected therewith to be disassembled with the port of the cyclone body 1 through the thread cooperation between the external thread seat 105 and the internal thread seat 106, thus facilitating the maintenance of the internal structure of the cyclone body 1.

[0032] The above ideal embodiment according to the application is an inspiration, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the application. The technical scope of the application is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A cyclone-based anti-deposit device for coal dust pipeline, characterized in that: The utility model relates to a cyclone body (1) is formed with flow cavity inside, filter assembly including fixed filter plate (2) in the top of flow cavity, cleaning assembly (3) including cleaning brush (301) that the activity is arranged below filter plate (2) to clean filter plate (2), and drive assembly (4) for driving cleaning brush (301) intermittent contact filter plate (2) and driving cleaning brush (301) rotation and clean in the process of contact. The drive assembly (4) includes a rotating mechanism, a rotating column (401) connected to the output end of the rotating mechanism and used for installing the cleaning brush (301), and a reciprocating mechanism sleeved outside the rotating column (401) and used for driving the cleaning brush (301) to approach or move away from the filter plate (2) in the process of driving the cleaning brush (301) to rotate by the rotating column (401). The reciprocating mechanism includes a driving seat (402) fixed in the flow cavity and a top rod (403) installed at the bottom of the cleaning brush (301) and matched with the driving seat (402), the driving seat (402) is provided with a notch (4021) to form a low position at the notch (4021) and a high position at the rest position, and a transition surface (4022) is formed between the low position and the high position, and the cleaning brush (301) contacts the filter plate (2) when the top rod (403) is matched with the high position of the driving seat (402). The reciprocating mechanism further includes an annular frame (404) fixed on the rotating column (401), a sleeve ring (405) slidingly arranged between the driving seat (402) and the annular frame (404), a limiting column (406) penetrating through the annular frame (404) and connected between the sleeve ring (405) and the cleaning brush (301), and an elastic element (407) sleeved outside the limiting column (406) and limited between the sleeve ring (405) and the annular frame (404), and the top rod (403) is fixed at the bottom of the sleeve ring (405). The transition surface (4022) is an arc surface.

2. A cyclone-based anti-deposit device for coal dust pipeline according to claim 1, characterized in that: The cleaning brush (301) has a plurality of and is spaced apart along the circumference of the rotating column (401), and the plurality of cleaning brushes (301) are connected through a cleaning seat (302), and a limiting structure for limiting the circumferences of the cleaning seat (302) and the rotating column (401) is arranged between the cleaning seat (302) and the rotating column (401).

3. A cyclone-based anti-deposit device for coal dust pipeline according to claim 2, characterized in that: The limiting structure includes a protrusion formed by the inner circumferential wall of the cleaning seat (302) and a sliding groove (4011) formed by the outer circumferential wall of the rotating column (401) for the protrusion to be clamped into.

4. A cyclone-based anti-deposit device for coal dust pipeline according to claim 3, characterized in that: The bottom of the top rod (403) is in a spherical structure.

5. A cyclone-based anti-deposit device for coal dust pipeline according to claim 3, characterized in that: The rotating mechanism includes a rotating power element (408), a driving wheel (409) connected to the output end of the rotating power element (408), a driven wheel (410) fixedly sleeved outside the rotating column (401), and a synchronous belt (411) wound around the driving wheel (409) and the driven wheel (410).

6. A cyclone-based anti-deposit device for coal dust pipeline according to claim 2, characterized in that: ​ 7. A cyclone-based anti-deposit device for coal dust pipeline according to claim 6, characterized in that: ​ 8. A cyclone-based anti-deposit device for coal dust pipeline according to claim 3, characterized in that: ​ 9. A cyclone-based anti-deposit device for coal dust pipeline according to claim 2, characterized in that: ​ 10. A cyclone-based anti-deposit device for coal dust pipeline according to claim 9, characterized in that: The cyclone body (1) is fixed with a support frame (101) in the middle, a connecting pipe (102) is arranged between the support frame (101) and a driving seat (402), the cyclone body (1) is fixed with a mounting seat (103) at the bottom, the mounting seat (103) is fixed with a mounting frame (104) for mounting a rotating power element (408) at the inner side, the cyclone body (1) is mounted with an outer threaded seat (105) at the top and an inner threaded seat (106) which is screwed with the outer threaded seat (105), and the filter assembly is mounted at the inner side of the inner threaded seat (106).

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