Backwashing system of laminated filter

Abstract

The utility model discloses a backwashing system of a laminated filter, which relates to the technical field of filter cleaning devices and comprises a cleaning solution tank, a heater for heating a solution is mounted in the cleaning solution tank, a circulating stirring component is mounted on the side edge of the cleaning solution tank, a security filter component is mounted on the circulating stirring component, and the security filter component is mounted on the cleaning solution tank. And the water outlet end of the security filter assembly is connected to the water production end of the laminated filter. Through the circulating stirring assembly installed on the side edge of the cleaning solution box, a solution in the cleaning solution box is heated by the heater and then mixed and stirred by the circulating stirring assembly, a traditional stirrer is replaced with circulation, meanwhile, the dissolving efficiency of a cleaning agent is improved after heating, and the purpose of improving the cleaning effect is achieved; meanwhile, a security filter assembly is mounted on the circulating stirring assembly, so that the solution stirred and mixed in the cleaning solution tank is filtered by the security filter assembly and then is used for backwashing a blow-down valve of a security filter.

Description

Technical Field

[0001] The utility model relates to a filter cleaning device, in particular to a laminated filter enhanced backwashing system. Background Art

[0002] The filter element of the laminated filter is a carrier for impurity treatment. It is composed of a group of plastic discs with grooves in different directions on both sides. The groove edges on the adjacent surfaces will form many intersections. These intersections constitute a large number of cavities and irregular passages. These passages are shrinking from the outside to the inside; these passages cause water turbulence, and ultimately cause impurities in the water to be intercepted at various intersections to form a filtering effect; the discs are stacked and installed on the filter element frame, and a filter unit that is loose on the outside and tight on the inside is formed under the action of the spring and the pressure of the incoming water; the laminates in each filter unit that are compressed by the spring and water pressure form countless filter screens that impurity particles cannot pass through; the laminates are generally made of high-quality engineering plastics with extremely high wear resistance and auxiliary It is supported by stainless steel springs and has a solid structure. When the water quality of the laminated filter is poor, especially when the colloidal content is high, the filter laminates will be clogged, and the laminated filter's own backwashing system will not be able to clean and peel off the colloidal adhesion. When the clogging reaches a certain level, the pressure difference exceeds the design value, the equipment output is reduced, and the filter fails. The prior art is to shut down the filter and disassemble it, and manually scrub the laminates one by one with cleaning agents, which is time-consuming and laborious. When the laminated filter is directly connected to water for backwashing, impurities in the water are easy to remain in the laminated filter. At the same time, the connected water is not added with cleaning agents, and the cleaning effect on the laminated filter is poor. If cleaning agents are added, there are problems such as insufficient mixing and stirring of the cleaning agents and low cleaning efficiency. Summary of the invention

[0003] The utility model provides a backwashing system for a laminated filter, which solves the technical problem of unsatisfactory cleaning effect in the prior art.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A backwashing system for a laminated filter comprises a cleaning solution tank, a safety filter and a laminated filter, wherein the cleaning solution tank is connected to the water inlet of the safety filter through a reflux pipe, the water outlet of the safety filter is connected to the water production end of the laminated filter through a water outlet pipe, and a laminated filter water inlet valve and a laminated filter sewage drain valve are respectively arranged on the laminated filter; a reflux valve and a tee are sequentially connected in series on the reflux pipe, a water pump inlet valve is arranged at the bottom of the cleaning solution tank, a cleaning water pump is connected to the water pump inlet valve, a second reflux pipe is connected to the water outlet of the cleaning water pump, the other end of the second reflux pipe is connected to the third connecting port of the tee, a water pump outlet valve, a check valve and a first pressure gauge are sequentially connected in series on the second reflux pipe; and a heater is arranged in the cleaning solution tank.

[0006] A feeding port for feeding materials and a water supply pipe for water supply are respectively arranged at the upper end of the cleaning solution tank, and the heater is a two-layer electric heating wire distributed in an "S" shape.

[0007] A second pressure gauge is arranged on the water inlet of the safety filter, an exhaust valve is arranged on the top of the safety filter, and a safety filter drain valve is arranged on the bottom of the safety filter; a third pressure gauge and a backwash valve are respectively arranged on the water outlet pipe connected to the water outlet of the safety filter; and a laminated filter water production valve is connected to the water production end of the laminated filter.

[0008] The beneficial effects of the utility model are as follows: (i) through the circulation stirring assembly installed on the side of the cleaning solution tank, the solution inside the cleaning solution tank is first heated by the heater and then mixed and stirred by the circulation stirring assembly, and the traditional agitator is replaced by the circulation. At the same time, the dissolution efficiency of the cleaning agent is increased after heating, thereby achieving the purpose of improving the cleaning effect. At the same time, the safety filter assembly installed on the circulation stirring assembly allows the solution stirred and mixed inside the cleaning solution tank to be filtered by the safety filter assembly and then backwash the safety filter drain valve, thereby achieving the purpose of backwashing and cleaning the safety filter drain valve; (ii) the circulation stirring assembly is composed of a cleaning water pump, a water pump inlet valve, a water pump outlet valve, a check valve, a first pressure gauge, a reflux pipe and a reflux valve, and the water inlet end of the cleaning water pump is connected to the bottom of the cleaning solution tank through the water pump inlet valve, and the water outlet end of the water pump inlet valve is connected to the upper end of the cleaning solution tank through the reflux pipe, thereby facilitating the circulation of the liquid inside the cleaning solution tank under the action of the cleaning water pump , and the first pressure gauge, the check valve and the water pump outlet valve are installed on the pipe body at the outlet end of the cleaning water pump in sequence, so that the check valve can check the water discharged from the cleaning water pump, and the water pump outlet valve is used to monitor the pressure of the water discharged from the cleaning water pump, so that when the drain valve of the security filter is cleaned, the recirculation volume and the pressure entering the security filter are adjusted by the cooperation of the water pump outlet valve and the first pressure gauge; (iii) The security filter assembly consists of a security filter, a second pressure gauge, a third pressure gauge, a backwash valve, an exhaust valve and a security filter drain valve, and the water inlet end of the security filter is connected to the reflux pipe, and the water outlet end of the security filter is connected to the laminated filter through the backwash valve, and the second pressure gauge and the third pressure gauge are installed on the pipe body at the inlet and outlet ends of the security filter respectively, so that the second pressure gauge can monitor the pressure of the water entering the security filter, and the third pressure gauge can monitor the pressure of the water outlet from the security filter, so as to facilitate the adjustment of the pressure of the backwashing of the drain valve of the security filter through the third pressure gauge and the backwash valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0010] Figure 2It is a structural diagram of the utility model in the main viewing direction;

[0011] Figure numerals: 1. cleaning solution tank; 2. cleaning water pump; 3. water pump inlet valve; 4. water pump outlet valve; 5. check valve; 6. first pressure gauge; 7. reflux pipe; 8. reflux valve; 9. water supply pipe; 10. heater; 11. feeding port; 12. safety filter; 13. second pressure gauge; 14. third pressure gauge; 15. backwash valve; 16. exhaust valve; 17. safety filter drain valve; 18. laminated filter; 19. laminated filter water production valve; 20. laminated filter water inlet valve; 21. laminated filter drain valve. DETAILED DESCRIPTION

[0012] The utility model is described in detail below with reference to the accompanying drawings:

[0013] A backwashing system for a laminated filter comprises a cleaning solution tank 1, wherein a heater 10 for heating a solution is installed in the cleaning solution tank 1, a circulating stirring assembly is installed on the side of the cleaning solution tank 1, a safety filter assembly is installed on the circulating stirring assembly, and a water outlet of the safety filter assembly is connected to a water production end of a laminated filter 18; through the circulating stirring assembly installed on the side of the cleaning solution tank 1, the solution inside the cleaning solution tank 1 is heated by the heater 10 and then mixed and stirred by the circulating stirring assembly, and the traditional agitator is replaced by circulation, and the dissolution efficiency of the cleaning agent is increased after heating, thereby achieving the purpose of improving the cleaning effect; at the same time, the safety filter assembly installed on the circulating stirring assembly enables the solution stirred and mixed inside the cleaning solution tank 1 to be filtered by the safety filter assembly and then backwash the safety filter drain valve 17, thereby achieving the purpose of backwashing and cleaning the safety filter drain valve 17.

[0014] The circulation stirring assembly includes a cleaning water pump 2 installed on the side of the cleaning solution tank 1, the water inlet end of the cleaning water pump 2 is connected to the lower part of the cleaning solution tank 1, and a water pump inlet valve 3 is installed on the pipe body of the water inlet end of the cleaning water pump 2, a reflux pipe 7 is connected between the water outlet end of the cleaning water pump 2 and the upper end of the cleaning solution tank 1, a reflux valve 8 is installed on the reflux pipe 7, and a first pressure gauge 6, a check valve 5 and a water pump outlet valve 4 are installed on the pipe body of the water outlet end of the cleaning water pump 2 in sequence; and the circulation stirring assembly is composed of the cleaning water pump 2, the water pump inlet valve 3, the water pump outlet valve 4, the check valve 5, the first pressure gauge 6, the reflux pipe 7 and the reflux valve 8, and the water inlet end of the cleaning water pump 2 is connected to the upper end of the cleaning solution tank 1. The water pump inlet valve 3 is connected to the bottom of the cleaning solution tank 1, and the water outlet end of the water pump inlet valve 3 is connected to the upper end of the cleaning solution tank 1 through the reflux pipe 7, so as to facilitate the circulation of the liquid inside the cleaning solution tank 1 under the action of the cleaning water pump 2, and the first pressure gauge 6, the check valve 5 and the water pump outlet valve 4 are installed in sequence on the pipe body of the water outlet end of the cleaning water pump 2, so that the check valve 5 can check the water discharged by the cleaning water pump 2, and the water pump outlet valve 4 is used to monitor the pressure of the water discharged by the cleaning water pump 2, so that when the safety filter drain valve 17 is cleaned, the recycling volume and the pressure entering the safety filter 12 can be adjusted through the cooperation of the water pump outlet valve 4 and the first pressure gauge 6.

[0015] The security filter assembly includes a security filter 12, the water inlet end of the security filter 12 is connected to the water outlet end of the water pump inlet valve 3 and the return pipe 7 through a tee, the water outlet end of the security filter 12 is connected to the water production end of the laminated filter 18, a second pressure gauge 13 is installed on the pipe body of the water inlet end of the security filter 12, a third pressure gauge 14 and a backwash valve 15 are installed on the pipe body of the water outlet end of the security filter 12 in sequence, an exhaust valve 16 is installed on the upper end of the security filter 12, and a security filter drain valve 17 is installed on the lower end of the security filter 12, and the security filter assembly consists of the security filter 12, the second pressure gauge 13, the third pressure gauge 1 4. It is composed of a backwash valve 15, an exhaust valve 16 and a safety filter drain valve 17, and the water inlet end of the safety filter 12 is connected to the reflux pipe 7, and the water outlet end of the safety filter 12 is connected to the laminated filter 18 through the backwash valve 15, and the second pressure gauge 13 and the third pressure gauge 14 are respectively installed on the pipe body of the water inlet and outlet ends of the security filter 12, so that the second pressure gauge 13 can monitor the pressure of the water entering the security filter 12, and the third pressure gauge 14 can monitor the pressure of the water outlet from the security filter 12, so as to facilitate the adjustment of the backwashing pressure of the safety filter drain valve 17 through the third pressure gauge 14 and the backwash valve 15.

[0016] When in use, water is injected into the cleaning solution tank 1 through the water supply pipe 9. When the heater 10 is connected to an external power source, the heater 10 is powered on to heat the water in the cleaning solution tank 1. The cleaning agent is added from the feeding port 11. The backwash valve 15, the safety filter drain valve 17, the laminated filter water production valve 19, the laminated filter water inlet valve 20 and the laminated filter drain valve 21 remain closed. The water pump inlet valve 3, the check valve 5, the water pump outlet valve 4 and the reflux valve 8 are opened. When the cleaning water pump 2 is connected to an external power source, the liquid in the cleaning solution tank 1 is injected into the cleaning solution tank 1 through the cleaning water pump 2. The liquid in the reflux pipe 7 flows back into the cleaning solution tank 1, so that the heated liquid circulates and the cleaning agent is mixed and stirred. The exhaust valve 16 is used to monitor the pressure of the cleaning water pump 2 when the water is discharged. When the reflux valve 8 is closed, the backwash valve 15 and the laminated filter drain valve 21 are opened, the water discharged from the outlet of the cleaning water pump 2 is filtered by the security filter 12 and then enters the water production end of the laminated filter 18, so as to achieve the purpose of backwashing the laminated filter 18. At the same time, the sewage backwashed by the laminated filter 18 is discharged through the laminated filter drain valve 21.

Claims

1. A backwashing system for a laminated filter, comprising a cleaning solution tank (1), a security filter (12) and a laminated filter (18), characterized in that: The cleaning solution tank (1) is connected to the water inlet of the security filter (12) through a return pipe (7), and the water outlet of the security filter (12) is connected to the water production end of the laminated filter (18) through a water outlet pipe. The laminated filter (18) is provided with a laminated filter water inlet valve (20) and a laminated filter sewage discharge valve (21). The return pipe (7) is connected in series with a return valve (8) and a tee. A water pump inlet valve (3) is provided at the bottom of the cleaning solution tank (1). A cleaning water pump (2) is connected to the water pump inlet valve (3). A second return pipe is connected to the water outlet of the cleaning water pump (2). The other end of the second return pipe is connected to the third connection port of the tee. A water pump outlet valve (4), a check valve (5) and a first pressure gauge (6) are connected in series with the second return pipe. A heater (10) is provided in the cleaning solution tank (1).

2. A backwashing system for a laminated filter according to claim 1, characterized in that: A feeding port (11) for feeding materials and a water supply pipe (9) for water supply are respectively arranged at the upper end of the cleaning solution tank (1), and the heater (10) is a two-layer electric heating wire distributed in an "S" shape.

3. A backwashing system for a laminated filter according to claim 1 or 2, characterized in that: A second pressure gauge (13) is provided at the water inlet of the safety filter (12), an exhaust valve (16) is provided at the top end of the safety filter (12), and a safety filter drain valve (17) is provided at the bottom end of the safety filter (12); a third pressure gauge (14) and a backwash valve (15) are provided on the water outlet pipe connected to the water outlet of the safety filter (12); and a lamellar filter water production valve (19) is connected to the water production end of the lamellar filter (18).

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