TWI517891B - Back-flush filter - Google Patents

Description

Backwash filter

The invention relates to a backwashing filter, in particular to a person who saves time and labor by washing operation and does not produce waste water.

The existing filter comprises a rack, and a pump is installed at the bottom of the rack. The two ends of the pump are correspondingly provided with an outlet and an inlet. The upper part of the rack is provided with a main body seat, and the filter cartridge is installed above the main body seat. A dosing tank and a viewing circulation pipe are disposed on one side, and one end of the inspection circulation pipe is connected with the filter cartridge, and the dosing tank is connected to the inlet of the pump through a pipe.

In operation, the filtered liquid to be filtered is pumped into a filter bucket for filtration, and activated carbon is added to the dosing tank. The activated carbon is transported together with the filtered liquid to the filter drum, and the activated carbon filters the organic matter in the liquid. Absorbing and filtering; after the filter barrel is used for a period of time, the impurities will block the filter material in the filter barrel and need to be cleaned. In the process of cleaning, the sealing cover of the filter should be taken apart, and then the filter element is taken out for cleaning. It is time consuming, labor intensive, and there is a lot of waste water generated, which causes great expenses in the process of use.

In view of this, our inventors are concentrating on further researching the existing filter structure, and proceeding with research and development and improvement, with a better creation to solve the above problems, and after the trial and modification, the invention has been made. .

Therefore, the object of the present invention is to improve the cleaning process of the original filter, and to solve the problems that the original filter consumes time, labor, and water in the cleaning process.

In order to achieve the above object, the inventors provide a backwash filter comprising a frame, a filter bucket disposed on the frame, and a filter water pump disposed below the frame, the filter water pump The outlet is in communication with the inlet of the filter bucket, and further comprising a backwashing water pump disposed below the rack, a filtering device disposed below the filter bucket for filtering impurities, and a water storage tank, The filter bucket includes a liquid outlet and a backwash outlet, the liquid outlet of the filter bucket is in communication with a water storage container for containing the filtered liquid, and the backwash outlet of the filter bucket is in communication with the inlet of the filter device. One side of the backwashing water pump is provided with an air inlet communicating with the outside air, and the other side is provided with an air inlet communicating with the air outlet of the air compressor, the outlet of the backwashing water pump and the filter bucket a liquid outlet communicating, an outlet of the filtering device being in communication with an inlet of the water storage tank, an outlet of the water storage tank being in communication with an inlet of the filtration water pump; a liquid outlet in the filtration tank and the water storage An outlet valve is disposed on the communication pipe of the device, and a sewage valve is disposed on the communication pipe of the backwashing outlet of the filter drum and the inlet of the filtering device, and the suction port of the backwashing water pump is provided An intake valve, an intake valve is provided at an intake port of the backwashing water pump, and a flush valve is disposed on a communication pipe of the outlet of the backwashing water pump and the liquid outlet of the filter bucket, A water inlet valve is disposed on the communication pipe connecting the outlet of the filtering device and the inlet of the water storage tank, and a water delivery valve is disposed on the communication pipe of the outlet of the water storage tank and the inlet of the filtering water pump.

According to the backwash filter described above, the filter device is a bag filter filter drum.

The backwashing filter according to the above, further comprising a dosing tank and an inner circulation pipe, wherein the dosing tank communicates with the inlet of the filtering water pump through a communication pipe, in the dosing tank and the filtering a medicated valve is disposed on the communication pipe of the inlet of the water pump; one end of the inner circulation pipe is in communication with the liquid outlet of the filter bucket, and the other end of the inner circulation pipe is connected with the inlet of the filtering water pump. A circulation valve is arranged on the inner circulation pipe.

According to the backwashing filter described above, the liquid outlet of the filter tank is connected to the water storage container, the backwash water pump, and the inner circulation pipe by a four-way pipe.

With the above arrangement, compared with the prior art, the present invention fills the air by the air compressor, and uses the filter tank to filter the remaining liquid and flushes the filter material by the backwashing water pump, without separately cleaning with water. Water saving, and the filter cover is not required to be opened during the cleaning process of the filter. It is only necessary to operate on the machine to clean the blocked filter element, which reduces many links in the cleaning operation and reduces the number of parts. The operation problem of the personnel saves time and manpower; in addition, the impurities after flushing are discharged into the filtering device, filtered by the filtering device, and the filtered liquid is input into the water storage tank under the pressure of the backwashing water pump, the water storage tank The liquid in the filter can be input into the filter bucket through the filter water pump for filtration and discharge, and has the advantages and effects of not generating waste water during the cleaning process.

With regard to the technical means of the inventors, several preferred embodiments are described in detail below with reference to the drawings, and the present invention will be further understood and appreciated.

First, referring to FIG. 1 to FIG. 6, the present invention is a backwashing filter comprising a frame, a filter barrel 10 disposed on the frame, and a filtering water pump 20 disposed under the frame, the water pump 20 for filtering. The outlet is connected to the inlet 11 of the filter drum 10 through a communication pipe, and a feed water valve 21 is disposed on the communication pipe of the inlet of the filter water pump 20 and the medicine tank; an exhaust passage is provided on the side wall of the filter drum 10, and the exhaust passage is provided. An exhaust valve 14 is provided; the filter drum 10 includes a liquid outlet 12 and a backwash outlet 13, and the liquid outlet 12 of the filter drum 10 communicates with a water storage container for containing the filtered liquid, and the filtered liquid in the filter tank 10 The liquid outlet 12 is discharged into the water storage container; a water outlet valve 121 is provided on the communication pipe of the liquid outlet 12 of the filter drum 10 and the water storage container.

As shown in Fig. 2, it is a flow chart of the filter in normal use: in the case of normal use, the medicine valve 21 and the exhaust valve 14 are opened before starting, and after the air is discharged, the exhaust valve 14 is closed and then the water outlet valve 121 is opened. The filtration water pump 20 draws the filtered liquid into the filter drum 10, and the air squeezed out of the filter drum 10 is discharged through the exhaust valve 14, and the filtered liquid is filtered through the filter material in the filter tank 10, and the liquid from the filter tank 10 is filtered. The outlet 12 is discharged into a water storage container.

The backwashing filter further includes a dosing tank 60 and an inner circulation pipe 80. The dosing tank 60 communicates with the inlet of the filtering water pump 20 through the communication pipe, and is disposed on the communication pipe of the dosing tank 60 and the inlet of the filtering water pump 20. There is a dosing valve 61; one end of the inner circulation pipe 80 communicates with the liquid outlet 12 of the filter drum 10, and the other end of the inner circulation pipe 80 communicates with the inlet of the filtering water pump 20, and a circulation valve 123 is provided in the inner circulation pipe 80.

3 is a flow chart of the internal circulation program of the filter: on the basis of normal use, the medicine valve 21 and the water outlet valve 121 are closed, and the medicine supply valve 61, the circulation valve 123 and the exhaust valve 14 are opened, and the medicine is added. The tank 60 is filled with activated carbon powder, and the filtering water pump 20 draws the filtering liquid into the filter drum 10. The filtered liquid mixed with the powdered activated carbon is discharged from the liquid outlet 12 of the filter tank 10 into the inner circulation pipe 80, and flows through the inner circulation pipe 80. The inlet to the water pump 20 for filtration is discharged into the filter drum through the filter water pump 20 for internal circulation; after the internal circulation, the activated carbon is distributed on the surface of the filter material, the syrup will be cleaned, the internal circulation is stopped, and the liquid is filtered in the filter bucket. Filter in 10 to restore normal use.

After filtering the liquid, the impurities adsorbing the organic matter are distributed in the filter material of the filter drum 10. After a period of use, the filter material is clogged with impurities, and the filter material needs to be cleaned; for cleaning the filter material, the backwash filter further includes setting a backwashing water pump 30 below the rack, a filtering device 40 for filtering impurities disposed under the filter tank 10, and a water storage tank 50; the backwashing outlet 13 of the filter tank 10 communicates with the inlet of the filtering device 40, and filters The impurities in the tub 10 are discharged into the filtering device 40 from the backwashing outlet 13; the filtering device 40 solid-filters the discharged impurities to filter out the mixed liquid in the impurities.

One side of the backwash water pump 30 is provided with an air inlet communicating with the outside air, and the other side is provided with an air inlet communicating with the air outlet of the air compressor 70; the outlet of the backwash water pump 30 and the filter drum 10 The liquid outlet 12 communicates, the outlet of the filtering device 40 communicates with the inlet of the water storage tank 50, the air compressor 70 charges the air into the backwashing water pump 30 to be activated, and the backwashing water pump 30 filters the air and the filter tank 10. The remaining liquid mixture is pressed into the filter drum 10 to wash the filter material in the filter drum 10; the impurities flushed out after the filter material is washed out are flowed into the filter device 40 through the backwash outlet 13 , and the filter device 40 performs the discharged impurities. The solid is filtered to filter out the mixed liquid in the impurities; the liquid filtered in the filtering device 40 is discharged into the water storage tank 50 by the backwash water pump 30.

The outlet of the water storage tank 50 communicates with the inlet of the water pump 20 for filtration, and the liquid stored in the water storage tank 50 can flow into the water pump 20 for filtration, and is pumped into the filter drum 10 by the water pump 20 for filtration to circulate and filter the waste water.

The liquid outlet 12 of the filter drum 10 communicates with the water storage container, the backwash water pump 30, and the inner circulation pipe 80 through a four-way pipe.

A drain valve 131 is provided in the communication pipe of the backwashing outlet 13 of the filter drum 10 and the inlet of the filter device 40, and an intake valve 32 is provided at the intake port of the backwash water pump 30, and the water pump for backwashing is provided. The intake port is provided with an intake valve 31, and a flush valve 122 is provided on the communication pipe of the outlet of the backwash water pump 30 and the liquid outlet 12 of the filter drum 10, and the outlet of the filter device 40 is connected to the inlet of the water storage tank 50. A water inlet valve 51 is provided in the pipe, and a water delivery valve 52 is provided in the communication pipe of the outlet of the water storage tank 50 and the inlet of the water pump 20 for filtration.

When the filter bucket 10 is cleaned, the filter bucket 10 and the filter water pump 20 are stopped; as shown in FIG. 4, it is a flowchart of the backwashing procedure of the filter: the feed water valve 21, the dosing valve 61, the water discharge valve 121, The circulation valve 123, the exhaust valve 14 and the water delivery valve 52 are closed, and the intake valve 32, the intake valve 31, the flush valve 122, the drain valve 131, and the water inlet valve 51 are opened, and the backwash water pump 30 and the air compressor are turned on. 70, the backwashing water pump 30 sends air into the filter drum 10, rinsing the filter material in the filter drum 10, flushing out the impurities in the filter material, and flushing the impurities and the liquid for rinsing the impurities from the backwashing The outlet 13 is discharged into the filtering device 40; the filtering device 40 filters the mixture of the discharged impurities and the liquid, separates the liquid and the solid, and filters out the liquid, and the filtered liquid flows in under the pressure of the backwashing water pump 30. In the water storage tank 50; when the backwashing is completed, the backwash water pump 30 is turned off, and the intake valve 31, the flush valve 122, the drain valve 131, and the water inlet valve 51 are closed.

During the backwashing process, no additional water is needed for cleaning, water is saved, and the sealing cover of the filter is not required to be opened during the cleaning process of the filter. Only the operation on the machine can be used to clean the blocked filter material. In the cleaning operation, many links are reduced, and the operation problems of the personnel are also reduced, saving time and manpower.

The liquid flowing into the water storage tank 50 can flow to the inlet of the filtering water pump 20, as shown in FIG. 5, which is a flow chart of the flushing liquid circulation filtering process of the filter: the water delivery valve 52 is opened, and the liquid stored in the water storage tank 50 is high or low. The difference flows into the inlet of the filter water pump 20.

When the filtration water pump 20 is turned on, the liquid that has flowed into the inlet of the filtration water pump 20 and the water storage tank 50 is sucked into the filter drum 10 for internal circulation filtration, and no waste water is generated in the process; the environmental protection conditions are harsh and the wastewater treatment is now in progress. Under the premise of high cost, no waste water is produced, and the beneficial effects are particularly visible.

The filter device 40 is a bag filter filter drum 10. After the filter bag in the bag filter filter drum 10 is subjected to a backwashing process, impurities are accumulated in the filter bag, and the filter bag is taken out and directly sprayed with an air gun. The impurities can be sprayed into the recovery bucket; in normal use, the filter bag in the bag filter filter drum 10 is taken out and cleaned, and the cleaning method is to turn the bag filter bag over to the recovery bag, and then use the air gun to spray and clean. Yes, the excess waste water and filtered liquid can be completely avoided during this operation, which greatly reduces the use of water sources and meets current environmental requirements.

The invention improves the cleaning process of the original filter, and uses the filter bucket 10 to filter the remaining liquid, and the water is washed by the backwashing water pump 30, and the water filter is washed without additional water, saving water, and cleaning in the filter. In the process, it is not necessary to open the sealing cover of the filter, and only need to operate on the machine, the blocked filter element can be cleaned, many steps are reduced in the cleaning operation, and the operation problem of the personnel is reduced, and the operation can be reduced. Due to possible mistakes in operation, it saves time and manpower, and solves the problems of time, labor consumption and water consumption of the original filter in the cleaning process.

In summary, the technical means disclosed in the present invention can effectively solve the conventional problems and achieve the intended purpose and effect, and are not seen in the publication before publication, have not been publicly used, and have long-term progress, and are patents. The invention claimed by the law is correct, and the application is filed according to law, and the company is invited to give a detailed examination and grant a patent for invention.

The above is only the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent changes and modifications made by the scope of the invention and the contents of the invention are all It should remain within the scope of this invention.

〔this invention〕
10‧‧‧Filter bucket
11‧‧‧ Entrance to the filter bucket
12‧‧‧Liquid exports
121‧‧‧Outlet valve
122‧‧‧ Flushing valve
123‧‧‧Circulation valve
13‧‧‧Backwash export
131‧‧‧Sewage valve
14‧‧‧Exhaust valve
20‧‧‧Filter water pump
21‧‧‧Injection valve
30‧‧‧Backwash water pump
31‧‧‧Intake valve
32‧‧‧ Inhalation valve
40‧‧‧Filter device
50‧‧‧Water storage tank
51‧‧‧Inlet valve
52‧‧‧Water delivery valve
60‧‧‧Dosing tank
61‧‧‧Dosing valve
70‧‧‧Air compressor
80‧‧‧Inner circulation pipeline

Fig. 1 is a schematic view showing the structure of the present invention. [Fig. 2] is a schematic flow chart of the present invention in a filtering procedure. [Fig. 3] is a schematic flow chart of the present invention in an internal circulation program. [Fig. 4] is a schematic flow chart of the present invention in a backwashing procedure. [Fig. 5] is a schematic flow chart of the circulating liquid filtration process of the present invention. Fig. 6 is a schematic perspective view of the present invention.

10‧‧‧Filter bucket

11‧‧‧ Entrance to the filter bucket

12‧‧‧Liquid exports

121‧‧‧Outlet valve

122‧‧‧ Flushing valve

123‧‧‧Circulation valve

13‧‧‧Backwash export

131‧‧‧Sewage valve

14‧‧‧Exhaust valve

20‧‧‧Filter water pump

21‧‧‧Injection valve

30‧‧‧Backwash water pump

31‧‧‧Intake valve

32‧‧‧ Inhalation valve

40‧‧‧Filter device

50‧‧‧Water storage tank

51‧‧‧Inlet valve

52‧‧‧Water delivery valve

60‧‧‧Dosing tank

61‧‧‧Dosing valve

70‧‧‧Air compressor

80‧‧‧Inner circulation pipeline

Claims (4)

A backwashing filter comprising a frame, a filter bucket disposed on the frame, and a filter water pump disposed under the frame, the outlet of the filter water pump being in communication with an inlet of the filter bucket, wherein And a water pump for backwashing disposed under the rack, a filtering device for filtering impurities disposed under the filter barrel, and a water storage tank, the filter barrel including a liquid outlet and a backwash outlet, The liquid outlet of the filter drum is in communication with a water storage container for containing the filtered liquid, and the backwash outlet of the filter bucket is in communication with the inlet of the filtering device, and one side of the backwashing water pump is provided with the outside An air inlet port connected to the air, and an air inlet communicating with an air outlet of the air compressor on the other side, the outlet of the water pump for backwashing being in communication with the liquid outlet of the filter drum, the outlet of the filtering device An inlet of the water storage tank is connected, an outlet of the water storage tank is connected to an inlet of the water pump for filtering; and a water outlet valve is arranged on a communication pipe of the liquid outlet of the filter water tank and the water storage container. a drain valve is disposed on the communication pipe of the backwashing outlet of the filter drum and the inlet of the filtering device, and an intake valve is provided at the suction port of the backwashing water pump, and the water pump is used in the backwashing water pump The air port is provided with an intake valve, and a flushing valve is provided on the communication pipe of the outlet of the backwashing water pump and the liquid outlet of the filter drum, and the outlet of the filtering device is connected with the inlet of the water storage tank A water inlet valve is disposed on the pipeline, and a water delivery valve is disposed on the communication pipe of the outlet of the water storage tank and the inlet of the filtering water pump. The backwashing filter of claim 1, wherein the filtering device is a bag filter filter drum. The backwashing filter of claim 1 or 2, further comprising a dosing tank and an inner circulation pipe, wherein the dosing tank communicates with the inlet of the filtering water pump through a communication pipe, a dosing valve is disposed on the communication pipe of the medicine tank and the inlet of the filtering water pump; one end of the inner circulation pipe is in communication with the liquid outlet of the filter barrel, and the other end of the inner circulation pipe is used for the filtering The inlet of the water pump is connected, and a circulation valve is arranged on the inner circulation pipe. The backwashing filter of claim 3, wherein the liquid outlet of the filter tank is connected to the water storage container, the backwash water pump, and the inner circulation pipe by a four-way pipe Connected.