Bottom filter gas backwashing equipment and backwashing method

Abstract

The present invention relates to the technical field of backwashing of bottom filter tanks, and discloses a gas phase reverse flushing device and a backwashing method for a bottom filter tank, comprising: a bottom filter tank and an air compressor, the bottom filter tank being used to contain liquid, an air pipeline, the air pipeline being installed on the air compressor, the air pipeline being connected with a branch pipe and an exhaust pipe, the exhaust pipe being provided with a first through hole, the gas generated by the air compressor flowing to the exhaust pipe through the air pipeline and the branch pipe in turn for discharge, and being used for backwashing oil residue, the gas phase reverse flushing device and the backwashing method for the bottom filter tank, when the output end of the driving source drives the connecting shaft to rotate, the connecting shaft causes multiple exhaust pipes to rotate through a synchronous belt, and at this time the exhaust pipe rotates inside an outer pipe, and a cleaning component inside the outer pipe can clean the surface of the filter screen inside the first through hole, thereby maintaining the performance of gas being discharged through the first through hole.

Description

Technical Field

[0001] The invention relates to the technical field of bottom filter tank backwashing, in particular to a bottom filter tank gas phase backwashing device and a backwashing method. Background Art

[0002] Backwashing, also known as filter flushing, is used to remove impurities trapped in the filter media layer, allowing the filter to quickly restore its filtration capacity. Backwashing has limited ability to remove suspended solids deposited on the filter media surface, so it is often combined with surface flushing or air washing to improve flushing efficiency.

[0003] Some existing bottom filter backwashing equipment uses an air compressor and an exhaust pipe for backwashing. Since part of the bottom filter is filled with pebbles, and the exhaust pipe is arranged inside the bottom filter, and the exhaust part of the exhaust pipe is located in the middle of the pebbles, when objects that need to be backwashed flow into the bottom filter, the objects will adhere to the exhaust pipe, and some dirt will flow into the exhaust pipe through the exhaust port of the exhaust pipe, which can easily affect the normal exhaust performance of the exhaust pipe. Summary of the Invention

[0004] The object of the present invention is to provide a bottom filter gas backwashing device and backwashing method to solve the problems raised in the above background technology.

[0005] The embodiments of this application adopt the following technical solutions:

[0006] A bottom filter gas reverse flushing device, comprising:

[0007] Bottom filter and air compressor, the bottom filter is used to hold liquid;

[0008] The gas pipeline is installed in the air compressor, and is connected to a branch pipe and an exhaust pipe. The exhaust pipe is provided with a first through hole. The gas generated by the air compressor flows through the gas pipeline and the branch pipe in sequence to the exhaust pipe for discharge, and is used for backwashing the oil residue.

[0009] The outer tube is installed on the exhaust pipe, and a cleaning piece is provided inside the outer tube for cleaning dirt attached to the first through hole.

[0010] Preferably, a filter is installed on the inner wall of the first through hole to prevent dirt from entering the interior of the exhaust pipe.

[0011] Preferably, a connecting shaft is fixed to one end of the exhaust pipe for driving the exhaust pipe to rotate, so that the surface of the filter screen is cleaned by a cleaning member.

[0012] Preferably, the outer tube is provided with a second through hole and a third through hole, the second through hole and the third through hole are used to discharge the gas flowing out of the first through hole, and the third through hole can discharge dirt falling from the surface of the filter screen.

[0013] Preferably, multiple connecting shafts are provided with linkage teeth and a driving source, and a synchronous belt is installed between two adjacent linkage teeth. The driving source drives the synchronous belt on the linkage teeth to rotate through the connecting shaft, and multiple connecting shafts are rotated, so that the filter on the exhaust pipe is cleaned by the cleaning part inside the outer tube.

[0014] Preferably, a plurality of the outer tubes are provided with a pushing component, and the outer tube drives the pushing component to push the pebbles, so that the accumulated pebbles are dispersed.

[0015] Preferably, the outer tube is provided with an outer disk, the connecting shaft is provided with a first linkage block, and the outer disk is provided with a second linkage block. The connecting shaft can push the outer disk on the second linkage block to slide through the first linkage block, so that the outer tube drives the pushing component to slide, which is used to push the accumulated pebbles.

[0016] Preferably, an elastic component is provided on the outer disk for driving the outer disk that is not pushed to recover.

[0017] Preferably, both the first linkage block and the second linkage block are provided with arc surfaces.

[0018] Preferably, the method comprises the following steps:

[0019] Step 1: The air compressor flows the compressed gas to the gas pipeline, branch pipe and exhaust pipe in sequence, and discharges it into the bottom filter tank through the first through hole, and cooperates with the liquid flowing inside the bottom filter tank to backwash the oil residue.

[0020] Step 2: The output end of the driving source drives the connecting shaft to rotate, and the linkage teeth on the connecting shaft drive the synchronous belt to rotate, so that multiple connecting shafts can all rotate. The connecting shaft drives the exhaust pipe to rotate, so that the cleaning part inside the outer pipe can clean the dirt on the surface of the filter screen, thereby ensuring that the gas can normally pass through the first through hole into the bottom filter tank to backwash the oil residue.

[0021] Step 3: When the connecting shaft rotates, the first linkage block can drive the outer disk on the second linkage block to slide, and the outer disk drives the outer tube to slide inside the circular hole, thereby driving the pushing component to push the accumulated pebbles, so that the accumulated pebbles roll, and the oil residue can be evenly backwashed with gas and liquid.

[0022] The beneficial effects of the present invention are:

[0023] This is a bottom filter tank gas reverse flushing device. When the output end of the driving source drives the connecting shaft to rotate, the connecting shaft causes multiple exhaust pipes to rotate through the synchronous belt. At this time, the exhaust pipes rotate inside the outer pipe. The cleaning part inside the outer pipe can clean the surface of the filter screen inside the first through hole, thereby maintaining the performance of gas discharge through the first through hole.

[0024] The invention relates to a bottom filter tank gas reverse flushing device and method. When the connecting shaft drives the first linkage block to push the outer disk on the second linkage block, the outer disk drives the outer tube to slide back and forth inside the circular hole, so that the pushing component pushes the accumulated pebbles, thereby causing the accumulated pebbles to roll, and the oil residue can be evenly backwashed with gas and liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 It is a structural schematic diagram of the connecting plate of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the outer tube cross section of the present invention.

[0029] In the figure: bottom filter 10, air compressor 11, air pipeline 12, branch pipe 13, outer pipe 15, first through hole 16, second through hole 17, third through hole 18, connecting plate 20, driving source 21, connecting shaft 22, linkage gear 23, synchronous belt 24, outer disc 30, elastic component 31, first linkage block 32, second linkage block 33, circular hole 34, pushing component 35. DETAILED DESCRIPTION

[0030] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0031] refer to Figure 1-Figure 3 As shown, a bottom filter gas reverse flushing device and backwashing method, comprising:

[0032] The bottom filter 10, air compressor 11, air pipeline 12, exhaust pipe and outer pipe 15, the air compressor 11 is installed on one side of the bottom filter 10, one end of the air pipeline 12 is connected to the air compressor 11, and the other end of the air pipeline 12 is fixedly connected with multiple branch pipes 13, the end of the branch pipe 13 away from the air pipeline 12 is rotatably connected to one end of the exhaust pipe, and the inner wall of the outer pipe 15 is slidably connected to the outer wall of the branch pipe 13. First, the inner bottom of the bottom filter 10 is filled with coarse pebbles, and then the upper half of the bottom filter 10 is filled with fine pebbles. At this time, the branch pipe 13, the exhaust pipe and the outer pipe 15 are all located between the coarse pebbles and the fine pebbles. The gas generated by the air compressor 11 flows to the exhaust pipe through the air pipeline 12 and the branch pipe 13 in turn, thereby cooperating with the water flowing inside the bottom filter 10 to backwash the fine residue in the bottom filter. When the exhaust pipe rotates inside the outer pipe 15, the dirt attached to the exhaust pipe can be cleaned.

[0033] refer to Figure 1 、 Figure 2 and Figure 3 As shown, a first through hole 16 is provided on the exhaust pipe, and a filter screen is fixed on the inner wall of the first through hole 16. When gas flows into the exhaust pipe, the fine residue inside the bottom filter tank 10 can be backwashed through the first through hole 16. The outer wall of the outer tube 15 is provided with a plurality of second through holes 17 and a third through hole 18 at intervals. When the gas of the exhaust pipe is discharged to the bottom filter tank 10, it can be discharged through the second through holes 17. At this time, the gas discharged from the second through holes 17 cooperates with the liquid flowing in the bottom filter tank 10 to backwash the fine residue. When the exhaust pipe rotates inside the outer tube 15, since a cleaning part is fixed on the inner wall of the outer tube 15, the dirt attached to the surface of the filter screen can be cleaned, thereby maintaining the performance of the exhaust gas from the exhaust pipe.

[0034] refer to Figure 2 and Figure 3 As shown, a connecting plate 20 is fixed to the inner wall of the bottom filter tank 10, and the connecting plate 20 separates the bottom filter tank 10 into a discharge cavity and a cavity, and the branch pipe 13, the exhaust pipe, and the outer pipe 15 are all located inside the discharge cavity, and the outer pipe 15 is slidably connected to the connecting plate 20, and the outer pipe 15 can be limited to maintain the stability of the outer pipe 15. A connecting shaft 22 is fixed to the end of the exhaust pipe away from the branch pipe 13. When the connecting shaft 22 rotates, it can drive the exhaust pipe to rotate on the branch pipe 13, thereby cleaning the surface of the filter screen through the cleaning part inside the outer pipe 15. The outer walls of multiple connecting shafts 22 are fixed with linkage teeth 23, and a synchronous belt 24 is installed between two adjacent linkage teeth 23.

[0035] A driving source 21 is installed at one end of the connecting shaft 22, and the driving source 21 is installed on the inner bottom wall of the cavity. When a large amount of dirt is attached to the filter screen inside the first through hole 16, the output end of the driving source 21 drives the connected connecting shaft 22 to rotate, and the connecting shaft 22 rotates multiple connecting shafts 22 through the synchronous belt 24. At this time, the connecting shaft 22 drives the exhaust pipe to rotate on the branch pipe 13, and the exhaust pipe rotates inside the outer tube 15. At this time, the cleaning part inside the outer tube 15 can scrape the surface of the filter screen. As the exhaust pipe continues to rotate axially, the dirt cleaned by the cleaning part can be discharged through the third through hole 18, thereby maintaining the continuous use of the cleaning part.

[0036] refer to Figure 2 and Figure 3 As shown, a pushing component 35 is fixed between the multiple outer tubes 15, which can push the pebbles, so that the gaps between the multiple pebbles change, so that the fine slag can be backwashed evenly. An outer disk 30 is fixed to a section of the outer wall of the outer tube 15 located inside the cavity, which is used to support the outer tube 15, thereby maintaining the stability of the outer tube 15. An elastic component 31 is fixed between the outer disk 30 and the connecting plate 20, which is used to limit the outer disk 30 and at the same time drive the outer disk 30 to recover.

[0037] A first linkage block 32 is fixed to a section of the outer wall of the connecting shaft 22 extending out of the outer tube 15, and a second linkage block 33 is fixed to the outer wall of the outer disk 30, and both the first linkage block 32 and the second linkage block 33 are provided with an arc surface. When the connecting shaft 22 rotates, the first linkage block 32 can push the second linkage block 33, thereby driving the outer tube 15 to slide, so that the pushing component 35 can push the pebbles to loosen them. A circular hole 34 is opened on the connecting plate 20, and a sealing gasket is fixed to the inner wall of the circular hole 34, and the outer tube 15 is slidably connected to the inside of the circular hole 34, and the diameter of the outer tube 15 is smaller than the diameter of the circular hole 34, which is used to limit the outer tube 15, thereby maintaining the stability of the outer tube 15 when sliding.

[0038] When the connecting shaft 22 rotates, the arc surface of the first linkage block 32 meets the arc surface of the second linkage block 33. At this time, the outer disk 30 compresses the elastic component 31, and the outer tube 15 slides inside the circular hole 34. At this time, the outer tube 15 drives the pushing component 35 to push the pebbles. At the same time, the cleaning member cleans the surface of the filter screen as the outer tube 15 slides back and forth, and can also discharge some dirt remaining inside the outer tube 15 from the third through hole 18 by sliding.

Claims

1. A gas reverse flushing device for a bottom filter, characterized in that: include: A bottom filter tank (10) and an air compressor (11), wherein the bottom filter tank (10) is used to contain liquid; An air pipeline (12) is installed on the air compressor (11), and a branch pipe (13) and an exhaust pipe are connected to the air pipeline (12). The exhaust pipe is provided with a first through hole (16). The gas generated by the air compressor (11) flows through the air pipeline (12) and the branch pipe (13) in sequence to the exhaust pipe for discharge, and is used for backwashing the oil residue. An outer tube (15), the outer tube (15) being mounted on the exhaust pipe, and a cleaning member being provided inside the outer tube (15) for cleaning dirt attached to the first through hole (16); A filter is installed on the inner wall of the first through hole (16) to prevent dirt from entering the interior of the exhaust pipe; A connecting shaft (22) is fixed to one end of the exhaust pipe, which is used to drive the exhaust pipe to rotate and clean the surface of the filter screen through the cleaning member; The outer tube (15) is provided with a second through hole (17) and a third through hole (18), the second through hole (17) and the third through hole (18) are used to discharge the gas flowing out of the first through hole (16), and the third through hole (18) can discharge dirt dropped from the surface of the filter screen; A plurality of outer tubes (15) are each provided with a pushing component (35), and the outer tubes (15) drive the pushing component (35) to push the pebbles, thereby dispersing the accumulated pebbles; The outer tube (15) is provided with an outer disk (30), the connecting shaft (22) is provided with a first linkage block (32), and the outer disk (30) is provided with a second linkage block (33). The connecting shaft (22) can push the outer disk (30) on the second linkage block (33) to slide via the first linkage block (32), so that the outer tube (15) drives the pushing component (35) to slide, thereby pushing the accumulated pebbles.

2. The bottom filter gas phase reverse flushing device according to claim 1, characterized in that: The plurality of connecting shafts (22) are each provided with a linkage tooth (23) and a driving source (21). A synchronous belt (24) is installed between two adjacent linkage teeth (23). The driving source (21) drives the synchronous belt (24) on the linkage tooth (23) to rotate via the connecting shaft (22). The plurality of connecting shafts (22) are all rotated, so that the filter screen on the exhaust pipe is cleaned by the cleaning member inside the outer tube (15).

3. The bottom filter gas phase reverse flushing device according to claim 1, characterized in that: The outer disk (30) is provided with an elastic component (31) for driving the unpushed outer disk (30) to recover.

4. The bottom filter gas phase reverse flushing device according to claim 3, characterized in that: The first linkage block (32) and the second linkage block (33) are both provided with arc surfaces.

5. A backwashing method for a bottom filter gas phase reverse flushing device according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: The air compressor (11) flows the compressed gas to the air pipeline (12), the branch pipe (13) and the exhaust pipe in sequence, and discharges the compressed gas into the bottom filter (10) through the first through hole (16), and cooperates with the liquid flowing inside the bottom filter (10) to backwash the oil residue; Step 2: The output end of the driving source (21) drives the connecting shaft (22) to rotate, and the linkage gear (23) on the connecting shaft (22) drives the synchronous belt (24) to rotate, so that the multiple connecting shafts (22) can all rotate, and the connecting shaft (22) drives the exhaust pipe to rotate, so that the cleaning member inside the outer tube (15) can clean the dirt on the surface of the filter screen, thereby ensuring that the gas can normally pass through the first through hole (16) and be discharged into the bottom filter tank (10) to backwash the oil residue; Step 3: When the connecting shaft (22) rotates, the outer disc (30) on the second linkage block (33) can be driven to slide through the first linkage block (32), and the outer disc (30) drives the outer tube (15) to slide inside the circular hole (34), thereby driving the pushing component (35) to push the accumulated pebbles, so that the accumulated pebbles roll, and the oil residue can be evenly backwashed with gas and liquid.

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