CN103768852A - backwash filter - Google Patents

Abstract

The invention discloses a backwash filter, comprising a frame, a filter barrel, a filter water pump, a backwash water pump, a bag filter type filter barrel and a water storage tank. The remaining liquid filtered by the filter barrel is used to flush the filter material through the backwash water pump, and there is no need to use clean water for cleaning, which saves water. In addition, during the cleaning process of the filter, it is not necessary to open the sealing cover of the filter. Only the operation on the machine is needed to clean the blocked filter element, which reduces many links in the cleaning operation, reduces the problems of personnel in operation, and saves time and manpower. The impurities after flushing are discharged into the filter device, filtered by the filter device, and the filtered liquid is input into the water storage tank under the pressure of the backwash water pump. The liquid in the water storage tank can be input into the filter barrel through the filter water pump for filtering and discharge, and no waste water is generated during the cleaning process.

Description

backwash filter

technical field

The invention relates to a filtering device, in particular to a backwashing filter which saves time and effort in cleaning operation and does not generate waste water.

Background technique

The existing filter includes a frame, the bottom of the frame is equipped with a pump, the two ends of the pump are respectively provided with an outlet and an inlet, the upper part of the frame is provided with a main body seat, and a filter cartridge is installed above the main body seat. One side of the tank is provided with a dosing tank and an inspection circulation pipe, one end of the inspection circulation pipe is connected to the filter cartridge, and the dosing tank is connected to the inlet of the pump through a pipeline. When working, the filtered liquid to be filtered is pumped into the filter barrel for filtration, and activated carbon is added into the dosing tank, and the activated carbon is sent to the filter barrel together with the filtered liquid, and the activated carbon will filter the organic matter in the liquid Absorb and filter. After the filter barrel is used for a period of time, impurities will block the filter material in the filter barrel and need to be cleaned. During the cleaning process, the sealing cover of the filter needs to be disassembled, and then the filter element is taken out for cleaning. The process is time-consuming and expensive. Artificial, and there is a lot of waste water, which causes a lot of costs in the process of use.

Contents of the invention

The main purpose of the present invention is to provide a backwashing filter, which aims to simplify the cleaning operation of the filter material, realize the time-saving and labor-saving cleaning operation of the filter material, and produce no waste water during the cleaning process.

The present invention proposes a backwashing filter, comprising a frame, a filter barrel arranged on the frame, and a filter water pump arranged below the frame, the outlet of the filter water pump is connected to the outlet of the filter barrel The inlet is connected, and also includes a backwashing water pump arranged under the frame, a filter device for filtering impurities and a water storage tank arranged under the filter barrel, and the filter barrel includes a liquid outlet and an outlet for backwashing , the liquid outlet of the filter bucket communicates with the water storage container used to hold the filtered liquid, the backwash outlet of the filter bucket communicates with the inlet of the filter device, and one side of the backwash water pump is provided with The suction port communicated with the outside air, the other side is provided with the air inlet communicated with the air outlet of the air compressor, the outlet of the backwashing water pump is communicated with the liquid outlet of the filter barrel, the filter device The outlet is communicated with the inlet of the water storage tank, and the outlet of the water storage tank is communicated with the inlet of the filtering water pump; a water outlet valve is provided on the communication pipe between the liquid outlet of the filter barrel and the water storage container, The backwashing outlet of the filter barrel is provided with a blowdown valve on the communication pipe of the inlet of the filter device, and the suction port of the backwashing water pump is provided with an air suction valve. The air inlet is provided with an air inlet valve, and a flushing valve is arranged on the communication pipe between the outlet of the backwash water pump and the liquid outlet of the filter barrel, and a flushing valve is arranged between the outlet of the filter device and the inlet of the water storage tank. A water inlet valve is provided on the communication pipeline, and a water delivery valve is provided on the communication pipeline between the outlet of the water storage tank and the inlet of the filtering water pump.

Preferably, the filter device is a bag filter bucket.

Preferably, it also includes a dosing tank and an internal circulation pipeline, the dosing tank communicates with the inlet of the filtering water pump through a communication pipeline, and a communication pipeline between the dosing tank and the inlet of the filtering water pump is provided There is a dosing valve; one end of the internal circulation pipeline communicates with the liquid outlet of the filter bucket, the other end of the internal circulation pipeline communicates with the inlet of the filtering water pump, and a circulating valve.

Preferably, the liquid outlet of the filtering bucket communicates with the water storage container, the backwash water pump, and the internal circulation pipeline through a four-way pipe. the

The beneficial effects of the backwash filter of the present invention are:

Improve the cleaning process of the original filter, fill in the air through the air compressor, and use the remaining liquid filtered in the filter bucket to flush the filter material through the backwash water pump, without additional cleaning with clean water, saving water. Moreover, in the process of cleaning the filter, it is not necessary to open the sealing cover of the filter, and the clogged filter element can be cleaned only by operating on the machine, which reduces many links in the cleaning operation and reduces the need for personnel to operate. problems, saving time and manpower.

Impurities after flushing are discharged into the filter device, filtered by the filter device, and the filtered liquid is input into the water storage tank under the pressure of the backwash water pump, and the liquid in the water storage tank can be input into the filter bucket through the filter water pump for further cleaning. It is filtered and discharged, and no waste water is generated during the cleaning process. The invention solves the problems of time-consuming, labor-consuming, water-consuming and other problems in the cleaning process of the original filter. the

Description of drawings

Fig. 1 is the structural block diagram of backwash filter in an embodiment of backwash filter of the present invention;

Fig. 2 is the flow chart of the filter procedure of backwash filter of the present invention;

Fig. 3 is the flow chart of the internal circulation program of the backwash filter of the present invention;

Fig. 4 is the flowchart of the backwash program of backwash filter of the present invention;

Fig. 5 is the flow chart of the flushing liquid circulating filtration program of the backwash filter of the present invention;

Fig. 6 is a first perspective view of the backwash filter in an embodiment of the backwash filter of the present invention.

The following are the names of the parts corresponding to the labels: 10-filter barrel, 11-inlet of filter barrel, 12-liquid outlet, 121-water outlet valve, 122-flush valve, 123-circulation valve, 13-backwash outlet, 14 -Exhaust valve, 131-Drain valve, 20-Filtration water pump, 21-Inlet sewage valve, 30-Backwash water pump, 31-Inlet valve, 32-Suction valve, 40-Filter device, 50-Water storage tank , 51-water inlet valve, 52-water delivery valve, 60-dosing tank, 61-dosing valve, 70-air compressor, 80-internal circulation pipeline.

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Referring to Fig. 1 to Fig. 6, propose an embodiment of the backwash filter of the present invention, this backwash filter comprises frame, is arranged on the filter tub 10 on the frame and is arranged on the filter water pump 20 below the frame, The outlet of the filtering water pump 20 communicates with the inlet 11 of the filter barrel 10 through a communication pipe, and a medicine inlet valve 21 is provided on the communication pipe between the inlet of the filtering water pump 20 and the medicine tank. An exhaust passage is provided on the side wall of the filter bucket 10, and an exhaust valve 14 is arranged on the exhaust passage. The filter barrel 10 includes a liquid outlet 12 and an outlet 13 for backwashing. The liquid outlet 12 of the filter barrel 10 communicates with a water storage container for containing the filtered liquid, and the filtered liquid in the filter barrel 10 is discharged from the liquid outlet 12 into the storage container. in the water container. A water outlet valve 121 is provided on the communication pipe between the liquid outlet 12 of the filter barrel 10 and the water storage container.

As shown in Figure 2, it is the flow chart of the normal use of the filter: in the case of normal use, open the medicine inlet valve 21 and the exhaust valve 14 before starting, after starting, close the exhaust valve 14 after the air is discharged, and then open the water outlet valve 121 , the filtered water pump 20 pumps the filtered liquid into the filter barrel 10, the air squeezed out of the filter barrel 10 is discharged through the exhaust valve 14, and the filtered liquid is filtered from the filter barrel 10 after being filtered by the filter material in the filter barrel 10. The liquid outlet 12 discharges into a water storage container.

The backwash filter also includes a dosing tank 60 and an internal circulation pipeline 80, the dosing tank 60 communicates with the inlet of the filtering water pump 20 through a communication pipeline, and the communication pipeline between the dosing tank 60 and the inlet of the filtering water pump 20 is provided There is a dosing valve 61. One end of the internal circulation pipeline 80 communicates with the liquid outlet 12 of the filter barrel 10 , and the other end of the internal circulation pipeline 80 communicates with the inlet of the filtering water pump 20 . A circulation valve 123 is provided on the internal circulation pipeline 80 .

As shown in Figure 3, it is the flow chart of the internal circulation program of the filter: on the basis of normal use, close the medicine inlet valve 21, the water outlet valve 121, open the medicine dosing valve 61, the circulation valve 123 and the exhaust valve 14, from the medicine dosing Activated carbon powder is added to the tank 60, and the filtered liquid is drawn into the filter bucket 10 by the water pump 20 for filtration. The filtered liquid mixed with powdery activated carbon is discharged into the internal circulation pipeline 80 from the liquid outlet 12 of the filter bucket 10, and flows through the internal circulation pipeline 80. To the inlet of the filtering water pump 20, it is discharged into the filter bucket through the filtering water pump 20 to carry out internal circulation; after the internal circulation, after the activated carbon is distributed on the surface of the filter material, the potion will become clean, stop the internal circulation, and the filtered liquid is filtered Filter in bucket 10, recover normal use state.

After the filtered liquid is filtered, impurities adsorbing organic matter will be distributed in the filter material of the filter barrel 10. After a period of use, the filter material will be blocked by impurities, and the filter material needs to be cleaned. In order to clean the filter material, the backwash filter also includes a backwash water pump 30 arranged under the frame, a filter device 40 for filtering impurities and a water storage tank 50 arranged under the filter barrel 10 . The outlet 13 for backwashing of the filter bucket 10 communicates with the inlet of the filter device 40 , and impurities in the filter bucket 10 are discharged into the filter device 40 through the outlet 13 for backwashing. The filtering device 40 performs solid filtration on the discharged impurities, and filters out the liquid mixed with the impurities.

One side of the water pump for backwashing 30 is provided with an air inlet connected with the outside air, and the other side is provided with an air inlet connected with the air outlet of the air compressor 70 . The outlet of the backwashing water pump 30 is communicated with the liquid outlet 12 of the filter barrel 10, the outlet of the filtering device 40 is communicated with the inlet of the water storage tank 50, and the air compressor 70 fills the air into the backwashing water pump 30 to start it, and the reverse The flushing water pump 30 mixes the air and the remaining liquid filtered out by the filter barrel 10 and presses them into the filter barrel 10 to flush the filter material in the filter barrel 10; In the filter device 40, the filter device 40 performs solid filtration on the discharged impurities, and filters out the liquid mixed in the impurities; .

The outlet of the water storage tank 50 communicates with the inlet of the filtering water pump 20, and the liquid stored in the water storage tank 50 can flow into the filtering water pump 20, and be pumped into the filter barrel 10 by the filtering water pump 20 for circulating filtration, so as to reduce the generation of waste water.

Wherein, the liquid outlet 12 of the filter bucket 10 communicates with the water storage container, the backwash water pump 30 and the internal circulation pipeline 80 through a four-way pipe.

The backwashing outlet 13 of the filter barrel 10 is provided with a blowdown valve 131 on the communication pipe of the inlet of the filter device 40, and the suction port of the backwashing water pump 30 is provided with an air suction valve 32, and at the inlet of the backwashing water pump The air port is provided with an air intake valve 31, and a flushing valve 122 is arranged on the communication pipe between the outlet of the backwash water pump 30 and the liquid outlet 12 of the filter bucket 10, and a flush valve 122 is arranged on the communication pipe between the outlet of the filter device 40 and the inlet of the water storage tank 50. A water inlet valve 51 is arranged on it, and a water delivery valve 52 is arranged on the communication pipe between the outlet of the water storage tank 50 and the inlet of the filtering water pump 20 .

When the filter bucket 10 is cleaned, the filter bucket 10 and the filtering water pump 20 stop working. As shown in Figure 4, it is a flow chart of the backwashing program of the filter: close the medicine inlet valve 21, the dosing valve 61, the water outlet valve 121, the circulation valve 123, the exhaust valve 14 and the water delivery valve 52, and open the suction valve 32 , intake valve 31, flushing valve 122, blowdown valve 131 and water inlet valve 51, open backwashing water pump 30 and air compressor 70, backwashing water pump 30 sends air into the filter barrel 10, to the filter barrel 10 The filter material is washed, and the impurities in the filter material are washed out, and the impurities washed out are mixed with the liquid for washing impurities and discharged into the filter device 40 from the outlet 13 for backwashing; the filter device 40 is used for the discharged impurities and liquid The mixture is filtered, liquid and solid are separated, and the liquid is filtered out, and the filtered liquid flows into the water storage tank 50 under the air pressure of the backwash water pump 30 . When the backwashing is completed, the backwashing water pump 30 is turned off, and the intake valve 31 , the flushing valve 122 , the blowdown valve 131 and the water inlet valve 51 are closed.

In the process of backwashing, there is no need to wash with clean water, which saves water, and it is not necessary to open the sealing cover of the filter during the cleaning process of the filter, and the clogged filter material can be cleaned by simply operating on the machine , It reduces many links in the cleaning operation, and also reduces the problems of personnel in operation, saving time and manpower.

The liquid that flows into the water storage tank 50 can flow to the inlet of the water filtration pump 20 again, as shown in Figure 5, which is a flow chart of the flushing liquid circulation filtration program of the filter: open the water delivery valve 52, and the liquid stored in the water storage tank 50 will vary depending on the height. Potential difference flows into the inlet of the filtering water pump 20 .

When the water for filtration pump 20 is turned on, the liquid flowing into the inlet of the water for filtration pump 20 and the water storage device 50 is drawn into the filter bucket 10 for internal circulation program filtration, and no waste water is generated during the process. Under the premise of strict environmental protection conditions and high waste water treatment costs, no waste water is generated, and the beneficial effect is particularly visible.

Among them, the filter device 40 is a bag filter barrel 10, after the filter bag in the bag filter barrel 10 is backwashed, impurities are accumulated in the filter bag, and after the filter bag is taken out, it is directly sprayed with an air gun , spray the impurities into the recycling bin. During normal use, take out the filter bag in the bag filter barrel 10 and clean it. The cleaning method is to turn the bag filter bag over to the recovery bag and spray it with an air gun to clean it. During this operation, redundant waste water and filtered liquid, greatly reducing the use of water sources, in line with the current environmental protection requirements.

The present invention improves the cleaning process of the original filter, utilizes the filter barrel 10 to filter the remaining liquid, and then backwashes the water pump 30 to flush the filter material, without additional cleaning with clean water, saving water, and cleaning in the filter During the process, it is not necessary to open the sealing cover of the filter, and the clogged filter element can be cleaned only by operating on the machine, which reduces many links in the cleaning operation, and also reduces the problems of personnel in operation. Reduce possible errors in operation, save time and manpower, and solve the problems of time-consuming, labor-consuming, water-consuming and other problems in the cleaning process of the original filter.

The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technical fields, are all The same reasoning is included in the patent protection scope of the present invention.

Claims (4)

1. a Backflushing filter, comprise frame, be arranged on filter vat and the Water Pump using for Filter that is arranged on described frame below in described frame, the outlet of described Water Pump using for Filter is communicated with the entrance of described filter vat, it is characterized in that, also comprise the backwash water pump that is arranged on described frame below, be arranged on the filter for impurity screening and an aqua storage tank of described filter vat below, described filter vat comprises liquid outlet and outlet for backwash, the liquid outlet of described filter vat be communicated with for the tank of splendid attire filter liquide, the backwash of described filter vat is communicated with the entrance of described filter with outlet, one side of described backwash water pump is provided with the air entry being communicated with extraneous air, opposite side is provided with the air inlet being communicated with the gas outlet of air compressor machine, described backwash water delivery side of pump is communicated with the liquid outlet of described filter vat, the outlet of described filter is communicated with the entrance of described aqua storage tank, the outlet of described aqua storage tank is communicated with the entrance of described Water Pump using for Filter, on the liquid outlet of described filter vat and the connecting pipe of described tank, be provided with outlet valve, on connecting pipe in the backwash of described filter vat with outlet and the entrance of described filter, be provided with blowoff valve, air entry at described backwash water pump is provided with inlet valve, air inlet at described backwash water pump is provided with intake valve, on the connecting pipe of the liquid outlet of described backwash water delivery side of pump and described filter vat, be provided with flushing valve, on the connecting pipe of the outlet of described filter and the entrance of described aqua storage tank, be provided with water intaking valve, on the connecting pipe of the outlet of described aqua storage tank and the entrance of described Water Pump using for Filter, be provided with delivery valve.

2. Backflushing filter according to claim 1, is characterized in that, described filter is bag filter formula filter vat.

3. Backflushing filter according to claim 1 and 2, it is characterized in that, also comprise dosing tank and internal recycle pipeline, described dosing tank is communicated with the entrance of described Water Pump using for Filter by connecting pipe, on the connecting pipe of the entrance of described dosing tank and described Water Pump using for Filter, is provided with dosing valve; One end of described internal recycle pipeline is communicated with the liquid outlet of described filter vat, and the other end of described internal recycle pipeline is communicated with the entrance of described Water Pump using for Filter, on described internal recycle pipeline, is provided with circulating valve.

4. Backflushing filter according to claim 3, is characterized in that, is communicated with by a four-way pipe at the liquid outlet of described filter vat with described tank, described backwash water pump, described internal recycle pipeline.

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