A filter with a dead angle-free rotating filter element and a cleaning method thereof

Abstract

The present application discloses a filter with a non-dead angle rotating cleaning filter element and a cleaning method thereof, the filter comprising a housing, a filter element, and a cleaning mechanism; a filter screen is arranged on the side wall of the filter element, and the lower end of the filter element is installed on the upper part of the housing through a partition; the cleaning mechanism comprises a motor, a transmission assembly, an infusion tube, and an inner nozzle; one end of the infusion tube is a cleaning liquid inlet, and the other end of the infusion tube is a cleaning liquid outlet, the cleaning liquid outlet extends into the housing, and the cleaning liquid outlet is arranged vertically upward; the inner nozzle is arranged vertically, the lower end of the inner nozzle is connected to the cleaning liquid outlet through a rotating seal, the upper end of the inner nozzle passes through the top surface of the filter element and is rotatably connected to the nozzle upper fixing frame, and a nozzle is arranged on the side wall of the inner nozzle; the output shaft of the motor is rotatably connected to the inner nozzle through a transmission assembly. The present application solves the problem in the prior art that the nozzle position for spraying cleaning liquid is fixed, resulting in a partial blind area on the inner surface of the filter element that cannot be effectively sprayed and cleaned.

Description

Technical Field

[0001] The present application belongs to the technical field of gas purification, and specifically relates to a filter with a dead-angle-free rotating cleaning filter element and a cleaning method thereof. Background Art

[0002] After the coking process, coking coal produces coke, coke oven gas and coking chemical products. The coke oven gas produced after coal coking mainly contains impurities such as clean coke oven gas, water vapor, coal tar gas, ammonia, benzene hydrocarbons, hydrogen sulfide, other sulfides, etc. This coke oven gas containing impurities must be purified to extract chemical products such as coal tar, ammonia, naphthalene, hydrogen sulfide, hydrogen cyanide and crude benzene before clean coke oven gas can be obtained.

[0003] When the existing filter is filtering, the coke oven gas containing impurities enters the filter from the turbid gas inlet under the driving force of pressure. When the coke oven gas passes through the filter element at the top of the filter, the filter element intercepts the impurities, and the clean gas that passes through the filter element enters the next process from the clean gas outlet at the top. As the filtering proceeds, the oil and impurities on the inner surface of the filter element continue to thicken, and the filtering resistance continues to increase. When the filtering pressure difference increases to the set value, the filter element must be cleaned, and the impurities and oil must be removed before continuing to filter the coke oven gas. The cleaning method used for the filter element of the existing filter is to flush the filter element with a cleaning liquid, but the position of the nozzle for spraying the cleaning liquid is fixed, resulting in a partial blind area on the inner surface of the filter element that cannot be effectively sprayed and cleaned, thereby limiting the cleaning effect of the filter element and affecting the filtering efficiency of the filter. Summary of the invention

[0004] The embodiment of the present application solves the problem in the prior art that the position of the nozzle for spraying cleaning liquid is fixed, resulting in some blind spots on the inner surface of the filter element that cannot be effectively sprayed and cleaned, by providing a filter with a rotating cleaning filter element without dead angles and a cleaning method thereof.

[0005] In order to achieve the above-mentioned purpose, an embodiment of the present invention provides a filter for rotating and cleaning a filter element without dead angles, comprising a housing with a closed structure, a filter element, and a cleaning mechanism;

[0006] The top of the shell is provided with a fresh air outlet, the bottom of the shell is provided with a sewage outlet, and the lower part of the shell side wall is provided with a foul air inlet;

[0007] The filter core is a barrel-shaped structure with an opening at the lower end, a filter screen is arranged on the side wall of the filter core, and the lower end of the filter core is installed on the upper part of the housing through a partition; the filter core and the partition separate the interior of the housing into an upper clean air area and a lower dirty air area;

[0008] The cleaning mechanism includes a motor, a transmission assembly, a liquid infusion tube, and an inner spray pipe arranged in the shell;

[0009] One end of the infusion tube is a cleaning liquid inlet, and the other end of the infusion tube is a cleaning liquid outlet, the cleaning liquid outlet extends into the interior of the shell, and the cleaning liquid outlet is vertically arranged upward;

[0010] The inner nozzle is vertically arranged, the lower end of the inner nozzle is connected to the cleaning liquid outlet through a rotary seal, the upper end of the inner nozzle passes through the top surface of the filter element and is rotatably connected to the nozzle upper fixing frame, and the nozzle upper fixing frame is fixed in the shell; the side wall of the inner nozzle is provided with a nozzle;

[0011] The output shaft of the motor is rotatably connected to the inner nozzle through the transmission assembly.

[0012] In a possible implementation, the lower end of the inner nozzle is rotatably connected to a nozzle lower fixing frame, the nozzle lower fixing frame is fixed in the shell, and a first ring body for sealing is provided between the inner nozzle and the top surface of the filter element.

[0013] In a possible implementation, the cleaning mechanism also includes a drain pipe, the upper end of which passes through the side wall of the shell and is connected to the partition, the lower end of which is connected to the side wall of the shell, the drain pipe connects the fresh air area and the turbid air area, and the part of the drain pipe located outside the shell is provided with a valve.

[0014] In a possible implementation, the transmission assembly includes a meshing active bevel gear and a driven bevel gear;

[0015] The driven bevel gear is sleeved on the inner nozzle, the motor is arranged outside the shell, the output shaft of the motor passes through the side wall of the shell and is connected to the active bevel gear, and a second ring body for sealing is arranged between the output shaft of the motor and the side wall of the shell.

[0016] In a possible implementation, the cleaning mechanism further includes an external spray pipe disposed in the clean air zone;

[0017] The outer nozzle is an L-shaped structure, the end of the horizontal section of the outer nozzle is connected to the upper end of the inner nozzle, the vertical section of the outer nozzle is located between the side wall of the filter element and the side wall of the shell, and a nozzle is arranged on the vertical section of the outer nozzle.

[0018] In a possible implementation, the number of the outer nozzles is more than two, and the more than two outer nozzles are evenly distributed in the circumference of the filter core.

[0019] The embodiment of the present invention further provides a method for cleaning a filter with a non-dead angle rotating filter element, which uses the above-mentioned filter with a non-dead angle rotating filter element, and comprises the following steps:

[0020] Turn on the motor, which drives the inner nozzle to rotate through the transmission assembly;

[0021] A cleaning liquid for cleaning the filter element is input through the cleaning liquid inlet, the cleaning liquid is input into the inner nozzle through the liquid infusion tube, and the nozzle of the inner nozzle sprays out the cleaning liquid;

[0022] The rotating cleaning liquid cleans the inner wall of the filter element;

[0023] The waste liquid after cleaning is discharged through the drain port.

[0024] In a possible implementation, the following steps are also included:

[0025] Open the valve on the sewage pipe;

[0026] The rotation of the inner nozzle drives the outer nozzle to rotate, and the nozzle of the outer nozzle sprays cleaning liquid;

[0027] The rotating cleaning liquid cleans the outer wall of the filter element;

[0028] The waste liquid after cleaning enters the bottom of the shell through the sewage pipe and is then discharged through the sewage outlet.

[0029] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0030] The embodiment of the present invention provides a filter with a rotating filter element that can be cleaned without dead angles and a cleaning method thereof. When the filter is in use, the motor drives the inner nozzle to rotate through the transmission assembly; the cleaning liquid used to clean the filter element is input through the cleaning liquid inlet, and the cleaning liquid is input into the inner nozzle through the infusion tube, and the nozzle of the inner nozzle sprays the cleaning liquid; the rotating cleaning liquid cleans the inner wall of the filter element; and the waste liquid after cleaning is discharged through the sewage outlet. The rotating inner nozzle can clean the inner surface of the filter screen without dead angles, avoiding the problem in the prior art that the nozzle position is fixed, resulting in some blind spots on the inner surface of the filter element that cannot be effectively sprayed and cleaned, so the cleaning effect is good and the filtering efficiency of the filter is guaranteed. The method has reasonable steps, simple operation, and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 A schematic structural diagram of a filter with a dead angle-free rotating filter element for cleaning provided in an embodiment of the present invention.

[0033] Figure numerals: 1-shell; 11-fresh air outlet; 12-drain outlet; 13-dirty air inlet; 14-fresh air area; 15-dirty air area; 2-filter element; 21-filter screen; 3-partition; 4-cleaning mechanism; 41-motor; 42-transmission assembly; 43-infusion tube; 431-cleaning liquid inlet; 44-inner nozzle; 45-drain pipe; 46-valve; 47-outer nozzle; 48-nozzle; 5-nozzle upper fixing frame; 6-nozzle lower fixing frame. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the embodiments of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0036] like Figure 1 As shown, the filter with a dead angle-free rotating filter element cleaning method provided by an embodiment of the present invention includes a housing 1 with a closed structure, a filter element 2, and a cleaning mechanism 4.

[0037] A fresh air outlet 11 is disposed at the top of the shell 1 , a sewage outlet 12 is disposed at the bottom of the shell 1 , and a foul air inlet 13 is disposed at the lower part of the side wall of the shell 1 .

[0038] The filter core 2 is a barrel-shaped structure with an opening at the lower end, and a filter screen 21 is provided on the side wall of the filter core 2. The lower end of the filter core 2 is installed on the upper part of the housing 1 through the partition 3. The filter core 2 and the partition 3 divide the interior of the housing 1 into an upper clean air area 14 and a lower dirty air area 15.

[0039] The cleaning mechanism 4 includes a motor 41 , a transmission assembly 42 , a liquid delivery tube 43 , and an inner spray tube 44 disposed in the housing 1 .

[0040] One end of the infusion tube 43 is a cleaning liquid inlet 431 , and the other end of the infusion tube 43 is a cleaning liquid outlet. The cleaning liquid outlet extends into the interior of the housing 1 , and the cleaning liquid outlet is arranged vertically upward.

[0041] The inner nozzle 44 is vertically arranged, the lower end of the inner nozzle 44 is connected to the cleaning liquid outlet through a rotary seal, and the upper end of the inner nozzle 44 passes through the top surface of the filter element 2 and is rotatably connected to the nozzle upper fixing frame 5, and the nozzle upper fixing frame 5 is fixed in the housing 1. A nozzle 48 is arranged on the side wall of the inner nozzle 44.

[0042] The output shaft of the motor 41 is rotatably connected to the inner nozzle 44 through the transmission assembly 42 .

[0043] It should be noted that the clean gas outlet 11 is used to discharge the filtered gas, the sewage outlet 12 is used to discharge the waste liquid after cleaning the filter element 2, and the turbid gas inlet 13 is used to input the coke oven gas to be filtered. The partition 3 is an annular structure, and the partition 3 is connected to the circumference of the lower end of the filter element 2. The inner nozzle 44 and the filter element 2 are coaxially arranged. The coke oven gas enters the clean gas area 14 through the filter screen 21 of the filter element 2 and is then discharged through the clean gas outlet 11. Therefore, the spray range of the inner nozzle 44 can well cover the filter screen 21, so that the impurities on the filter screen 21 are effectively removed, thereby ensuring the filtering efficiency of the filter.

[0044] In this embodiment, the lower end of the inner nozzle 44 is rotatably connected to the nozzle lower fixing frame 6 , the nozzle lower fixing frame 6 is fixed in the shell 1 , and a first ring body for sealing is provided between the inner nozzle 44 and the top surface of the filter element 2 .

[0045] It should be noted that the first ring body can prevent unfiltered coke oven gas from passing through the gap between the inner nozzle 44 and the filter element 2. The nozzle upper fixing frame 5 and the nozzle lower fixing frame 6 can be detachably mounted on the inner wall of the housing 1.

[0046] In this embodiment, the cleaning mechanism 4 also includes a drain pipe 45, the upper end of the drain pipe 45 passes through the side wall of the shell 1 and is connected to the partition 3, the lower end of the drain pipe 45 is connected to the side wall of the shell 1, the drain pipe 45 connects the fresh air area 14 and the turbid air area 15, and the part of the drain pipe 45 located outside the shell 1 is provided with a valve 46.

[0047] In this embodiment, the transmission assembly 42 includes a driving bevel gear and a driven bevel gear that are meshed with each other.

[0048] The driven bevel gear is sleeved on the inner nozzle 44, the motor 41 is arranged outside the shell 1, the output shaft of the motor 41 passes through the side wall of the shell 1 and is connected to the active bevel gear, and a second ring body for sealing is arranged between the output shaft of the motor 41 and the side wall of the shell 1.

[0049] It should be noted that the second ring body can prevent unfiltered coke oven gas from passing through the gap between the side wall of the housing 1 and the output shaft of the motor 41. The motor 41 is a reduction motor 41, so that the rotation speed of the inner nozzle 44 is easy to adjust.

[0050] In this embodiment, the cleaning mechanism 4 further includes an outer nozzle 47 disposed in the clean air area 14 .

[0051] The outer nozzle 47 is an L-shaped structure. The end of the horizontal section of the outer nozzle 47 is connected to the upper end of the inner nozzle 44. The vertical section of the outer nozzle 47 is located between the side wall of the filter element 2 and the side wall of the shell 1. A nozzle 48 is provided on the vertical section of the outer nozzle 47.

[0052] It should be noted that a horizontal connecting pipe is provided on the side wall of the upper end of the inner nozzle 44 , and the connecting pipe is connected to the outer nozzle 47 via a flange, so as to facilitate the disassembly and installation of the outer nozzle 47 .

[0053] The outer nozzle 47 can clean the outside of the filter 21 very well. The combined use of the inner nozzle 44 and the outer nozzle 47 can thoroughly clean the surface of the filter 21, avoiding the problem of limited cleaning effect in the prior art of only cleaning with the inner nozzle 44.

[0054] In this embodiment, the number of the outer nozzles 47 is more than two, and the more than two outer nozzles 47 are evenly distributed in the circumferential direction of the filter core 2 .

[0055] It should be noted that more than two external nozzles 47 can balance the force on the rotating parts in the cleaning mechanism 4, avoiding the problem of shaking of the rotating parts in the cleaning mechanism 4 caused by setting one external nozzle 47. At the same time, more than two external nozzles 47 have better cleaning ability.

[0056] An embodiment of the present invention further provides a method for cleaning a filter with a non-dead-angle rotating filter element. The method adopts the above-mentioned filter with a non-dead-angle rotating filter element, and includes the following steps.

[0057] The motor 41 is turned on, and the motor 41 drives the inner nozzle 44 to rotate through the transmission assembly 42 .

[0058] The cleaning liquid for cleaning the filter element 2 is input through the cleaning liquid inlet 431 , and the cleaning liquid is input into the inner nozzle 44 through the liquid infusion tube 43 , and the nozzle 48 of the inner nozzle 44 sprays out the cleaning liquid.

[0059] The rotating cleaning liquid cleans the inner wall of the filter element 2.

[0060] The waste liquid after cleaning is discharged through the sewage outlet 12.

[0061] It should be noted that the rotating inner nozzle 44 can clean the inner surface of the filter 21 without dead angles, avoiding the problem in the prior art that the nozzle position is fixed, resulting in some blind spots on the inner surface of the filter element that cannot be effectively sprayed and cleaned. Therefore, the cleaning effect is good and the filtering efficiency of the filter is guaranteed.

[0062] In this embodiment, the following steps are also included.

[0063] Open the valve 46 on the sewage pipe 45.

[0064] The rotation of the inner nozzle 44 drives the outer nozzle 47 to rotate, and the nozzle 48 of the outer nozzle 47 sprays the cleaning liquid.

[0065] The rotating cleaning liquid cleans the outer side wall of the filter element 2.

[0066] The waste liquid after cleaning enters the bottom of the shell 1 through the sewage pipe 45 and is then discharged through the sewage outlet 12.

[0067] It should be noted that the spraying direction of the inner nozzle 44 causes some impurities to remain on the filter screen 21, while the outer nozzle 47 can effectively remove the remaining impurities, further ensuring the cleaning effect.

[0068] The outer nozzle 47 can reasonably discharge the waste liquid after cleaning the outer wall of the filter element 2 to prevent it from accumulating at the bottom of the clean air area 14, that is, between the lower end of the filter element 2 and the inner wall of the shell 1.

[0069] The valve 46 can prevent the coke oven gas from entering the clean gas zone 14 through the drain pipe 45 .

[0070] In this embodiment, it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and therefore it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A filter with a dead angle-free rotating filter element, characterized in that: It comprises a housing (1) with a closed structure, a filter element (2), and a cleaning mechanism (4); The top of the shell (1) is provided with a fresh air outlet (11), the bottom of the shell (1) is provided with a sewage outlet (12), and the lower part of the side wall of the shell (1) is provided with a foul air inlet (13); The filter core (2) is a barrel-shaped structure with an open lower end. A filter screen (21) is provided on the side wall of the filter core (2). The lower end of the filter core (2) is mounted on the upper part of the housing (1) via a partition (3). The filter core (2) and the partition (3) separate the interior of the housing (1) into an upper clean air zone (14) and a lower dirty air zone (15). The cleaning mechanism (4) comprises a motor (41), a transmission assembly (42), a liquid infusion tube (43), and an inner spray pipe (44) disposed in the housing (1); One end of the infusion tube (43) is a cleaning liquid inlet (431), and the other end of the infusion tube (43) is a cleaning liquid outlet, the cleaning liquid outlet extends into the interior of the housing (1), and the cleaning liquid outlet is arranged vertically upward; The inner nozzle (44) is arranged vertically, the lower end of the inner nozzle (44) is connected to the cleaning liquid outlet via a rotary seal, the upper end of the inner nozzle (44) passes through the top surface of the filter element (2) and is rotatably connected to the nozzle upper fixing frame (5), and the nozzle upper fixing frame (5) is fixed in the housing (1); a nozzle (48) is arranged on the side wall of the inner nozzle (44); The output shaft of the motor (41) is rotationally connected to the inner nozzle (44) via the transmission assembly (42); The cleaning mechanism (4) further comprises a drain pipe (45), the upper end of the drain pipe (45) passing through the side wall of the shell (1) and then connected to the partition (3), the lower end of the drain pipe (45) being connected to the side wall of the shell (1), the drain pipe (45) connecting the clean air area (14) and the turbid air area (15), and a valve (46) being provided at a portion of the drain pipe (45) located outside the shell (1); The transmission assembly (42) comprises a driving bevel gear and a driven bevel gear meshing with each other; The driven bevel gear is sleeved on the inner nozzle (44); the motor (41) is arranged outside the housing (1); the output shaft of the motor (41) passes through the side wall of the housing (1) and is connected to the driving bevel gear; a second ring body for sealing is arranged between the output shaft of the motor (41) and the side wall of the housing (1); The cleaning mechanism (4) further comprises an external spray pipe (47) arranged in the clean air zone (14); The outer nozzle (47) is an L-shaped structure. The end of the horizontal section of the outer nozzle (47) is connected to the upper end of the inner nozzle (44). The vertical section of the outer nozzle (47) is located between the side wall of the filter element (2) and the side wall of the housing (1). A nozzle (48) is provided on the vertical section of the outer nozzle (47).

2. The filter with a dead angle-free rotating cleaning filter element according to claim 1, characterized in that: The lower end of the inner nozzle (44) is rotatably connected to a nozzle lower fixing frame (6), the nozzle lower fixing frame (6) is fixed in the housing (1), and a first ring body for sealing is provided between the inner nozzle (44) and the top surface of the filter element (2).

3. The filter with a dead angle-free rotating cleaning filter element according to claim 2, characterized in that: The number of the outer nozzles (47) is more than two, and the more than two outer nozzles (47) are evenly distributed in the circumferential direction of the filter core (2).

4. A method for cleaning a filter with a non-dead angle rotating cleaning filter element, characterized in that: A filter using a dead angle-free rotating cleaning filter element as claimed in any one of claims 1 to 3 comprises the following steps; The motor (41) is turned on, and the motor (41) drives the inner nozzle (44) to rotate via the transmission assembly (42); A cleaning liquid for cleaning the filter element (2) is input through the cleaning liquid inlet (431), the cleaning liquid is input into the inner spray pipe (44) through the liquid infusion pipe (43), and the spray head (48) of the inner spray pipe (44) sprays out the cleaning liquid; The rotating cleaning liquid cleans the inner wall of the filter element (2); The waste liquid after cleaning is discharged through the drain port (12).

5. The method for cleaning a filter with a non-dead-angle rotating cleaning filter element according to claim 4, characterized in that: The following steps are also included; Open the valve (46) on the sewage pipe (45); The inner nozzle (44) rotates to drive the outer nozzle (47) to rotate, and the nozzle (48) of the outer nozzle (47) sprays the cleaning liquid; The rotating cleaning liquid cleans the outer wall of the filter element (2); The waste liquid after cleaning enters the bottom of the shell (1) through the sewage pipe (45) and is then discharged through the sewage outlet (12).

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