Flap valve filter system

Abstract

The present application relates to a flap valve filter system, wherein a backwash mechanism is used to flush impurities in a filter layer to one side of the filter layer, a timing module is used to record the first time the backwash mechanism is activated, the filter has a connected inner cavity and an opening, the filter layer and the backwash mechanism are arranged in a stacked manner in the inner cavity through the opening, the filter has a drain hole connected to the inner cavity, a wastewater tank is connected to the inner cavity through the drain hole, a flap valve is arranged in the drain hole, a first turbidity meter is arranged in the filter, the first turbidity meter is used to obtain a first turbidity unit, a second turbidity meter is arranged in the wastewater tank, the second turbidity meter is used to obtain a second turbidity unit, and a first control module is used to control the activation or deactivation of the backwash mechanism. The above solution can solve the problem in the related art that the operation of the flap valve filter is greatly affected by water quality, and sometimes the output water quality is very low before the preset time is reached, so that the backwash operation cannot be performed in time, resulting in poor backwashing effect.

Description

Technical Field

[0001] The invention relates to the technical field of flap valve filter tanks, in particular to a flap valve filter tank system. Background Art

[0002] The flap valve filter is a control unit in the water purification system. Its water distribution system is characterized by low resistance. This system, consisting of horizontal, vertical, and vertical air distribution pipes, forms a main air and water distribution channel and a double-layer air and water distribution layer within the multiple horizontal water distribution pipes. Because the water distribution pipes within the filter are independent and separate, this structural feature theoretically ensures good uniformity in the water and air distribution of the flap valve filter. Filter filtration is a crucial component of the water purification process. During the filtration process, impurities filtered from the water will continuously accumulate in the filter media layer. Excessive accumulation can result in substandard effluent quality.

[0003] To solve the above problems, in the relevant technology, the flap valve filter adopts a closed valve flushing method, and the closed valve flushing is performed through a preset time. Among them, the flushing process is divided into two major stages: the first flushing and the second flushing. In the first flushing stage, the flap valve filter flushes the filter layer through its backwashing mechanism, and the flap valve is closed to form a closed space, so that dust, sand and gravel and other impurities are flushed to one side of the filter layer. It takes 2 minutes and is left to stand for 30 seconds; in the second flushing stage, the backwashing mechanism flushes the filter layer, and the flap valve is activated to form a drainage channel, and impurities can be discharged with the water flow through the drainage channel.

[0004] However, the operation of the flap valve filter is greatly affected by the water quality. Sometimes, before the preset time comes, the effluent quality is already very low, and the backwash operation of the filter material layer of the flap valve filter cannot be carried out in time, resulting in poor backwashing effect of the flap valve filter. Summary of the Invention

[0005] Based on this, a flap valve filter system is provided to solve the problem in related technologies that the operation of the flap valve filter is greatly affected by water quality. Sometimes, before the preset time is reached, the water quality is already very low, and the backwash operation of the filter material layer of the flap valve filter cannot be performed in time, resulting in poor backwashing effect of the flap valve filter.

[0006] A flap valve filter system includes a filter, a filter material layer, a backwash mechanism, a first control module, a wastewater tank, a timing module, and a flap valve. The backwash mechanism is used to flush impurities in the filter material layer. The timing module is used to record a first time when the backwash mechanism is activated. The filter defines a connected inner cavity and an opening. The wastewater tank is connected to the filter. The filter material layer and the backwash mechanism pass through the opening and are sequentially stacked in the inner cavity. The filter defines a drainage hole connected to the inner cavity. The wastewater tank is connected to the inner cavity through the drainage hole. The flap valve is disposed in the drainage hole. A first turbidity meter is provided in the filter, and the first turbidity meter is used to obtain a first turbidity unit in the filter. A second turbidity meter is provided in the wastewater tank, and the second turbidity meter is used to obtain a second turbidity unit in the wastewater tank. The timing module, the first turbidity meter, and the second turbidity meter are all electrically connected to the first control module. The first control module is used to control the activation or deactivation of the backwash mechanism.

[0007] Preferably, in the above-mentioned flap valve filter system, the flap valve filter system also includes a cleaning and flushing mechanism and a second control module, the second control module is electrically connected to the timing module, the cleaning and flushing mechanism is arranged on the filter, the cleaning and flushing mechanism is used to prevent the impurities from settling to one side of the filter material layer, and the second control module is used to control the start or shut down of the cleaning and flushing mechanism.

[0008] Preferably, in the above-mentioned flap valve filter system, the cleaning and flushing mechanism includes a base, an air source component, a first air pump, a first control valve and an anti-sedimentation flushing pipeline, the base and the air source component are both arranged on the filter, the anti-sedimentation flushing pipeline includes a flushing section, a first section and a connecting section, one end of the first section is connected to and communicated with the flushing section, one end of the connecting section is connected to the flushing section, the other end of the connecting section is arranged on the base, the air source component is communicated with one end of the first air pump, the other end of the first air pump is connected to one end of the first control valve, and the other end of the first control valve is connected to and communicated with the other end of the first section.

[0009] Preferably, in the above-mentioned flap valve filter system, the base includes a crossbeam, a first driving member, a first bracket and a second bracket, the first bracket and the second bracket are arranged on opposite sides of the backwash flap valve filter, one end of the crossbeam is movably connected to the first bracket, and the other end of the crossbeam is movably connected to the second bracket, the first driving member is arranged on the crossbeam, and the other end of the connecting section is arranged on the crossbeam, the first driving member can drive the crossbeam to move, the connecting section can move with the crossbeam, and the flushing section can move with the connecting section.

[0010] Preferably, in the above-mentioned flap valve filter system, the base includes a crossbeam, a first drive member, a second drive member, a first bracket and a second bracket, the first bracket and the second bracket are arranged on opposite sides of the backwash flap valve filter, one end of the crossbeam is movably connected to the first bracket, and the other end of the crossbeam is movably connected to the second bracket, the first drive member and the second drive member are both arranged on the crossbeam, the first drive member can drive the crossbeam to move in a first direction, the connecting section can move along the crossbeam along the first direction, the flushing section can move along the connecting section along the first direction, the second drive member can drive the connecting section to move in a second direction, and the flushing section can move along the connecting section along the second direction, wherein the first direction and the second direction intersect.

[0011] Preferably, in the above-mentioned flap valve filter system, a first guide rail and a rack are provided on the first bracket, a second guide rail is provided on the first bracket, the first driving member includes a connected driving motor and a driving gear, the driving motor is provided at one end of the beam, the driving gear is engaged with the rack, a first slider is provided at one end of the beam, the first slider slides with the first guide rail, a second slider is provided at the other end of the beam, the second slider slides with the second guide rail, and the second driving member is a driving cylinder.

[0012] Based on the above-mentioned flap valve filter system, the present application further discloses a backwashing method applicable to the above-mentioned flap valve filter system, the backwashing method comprising:

[0013] Step 101: The first turbidity meter is started to obtain a first turbidity unit in the filter tank;

[0014] Step 102: The second turbidity meter is started to obtain a second turbidity unit in the wastewater pool;

[0015] Step 103: When the difference between the second turbidity unit and the first turbidity unit is less than a preset turbidity unit, the first control module controls the backwash mechanism to start, the timing module starts, and records the first time when the backwash mechanism is started, and the flap valve and the drain hole are in a blocked state;

[0016] Step 104: When the first time is greater than a first preset time, the first control module controls the backwash mechanism to be closed;

[0017] Step 105: When the first time is greater than the second preset time, the first control module controls the backwash mechanism to start, and the flap valve and the drain hole are in an unobstructed state.

[0018] Preferably, the above-mentioned backwashing method further comprises:

[0019] Step 201: When the first time is greater than the second preset time, the second control module controls the cleaning and flushing mechanism to start;

[0020] Step 202: When the first time is greater than a third preset time, the first control module controls the backwash mechanism to be closed.

[0021] Preferably, the above-mentioned backwashing method, when the first time is greater than the second preset time, the second control module controls the cleaning and flushing mechanism to start, further comprising:

[0022] Step 301: The first control valve controls the flow between the first air pump and the first section, and the first air pump drives the flushing air in the air source assembly to move along the second section to the flushing section and spray onto the filter material layer;

[0023] Step 302: The second control valve controls the flow between the first water pump and the second section. The first water pump drives the flushing water in the water source assembly to move along the second section to the flushing section and spray onto the filter material layer.

[0024] Preferably, the above-mentioned backwashing method, when the first time is greater than the second preset time, the second control module controls the cleaning and flushing mechanism to start, further comprising:

[0025] Step 401: The first driving member drives the crossbeam to move along a first direction, the connecting section moves along the first direction with the crossbeam, and the flushing section moves along the first direction with the connecting section;

[0026] Step 402: The second driving member drives the connecting section to move along a second direction, and the flushing section can move along the second direction with the connecting section.

[0027] The technical solution adopted in this application can achieve the following beneficial effects:

[0028] The flap valve filter system disclosed in the present application includes a filter, a filter material layer, a backwash mechanism, a first control module, a wastewater tank, a timing module and a flap valve. The backwash mechanism is used to flush impurities in the filter material layer. The timing module is used to record the first time when the backwash mechanism is started. The filter is provided with a connected inner cavity and an opening. The wastewater tank is connected to the filter. The filter material layer and the backwash mechanism are stacked in sequence through the inner cavity. The filter is provided with a drainage hole connected to the inner cavity. The wastewater tank is connected to the inner cavity through the drainage hole. The flap valve is set in the drainage hole. A first turbidity meter is provided in the filter. The first turbidity meter is used to obtain a first turbidity unit in the filter. A second turbidity meter is provided in the wastewater tank. The second turbidity meter is used to obtain a second turbidity unit in the wastewater tank. The timing module, the first turbidity meter and the second turbidity meter are all electrically connected to the first control module. The first control module is used to control the start or shut down of the backwash mechanism. The above structure is composed of a first control module, a first turbidity meter, a second turbidity meter and a timing module, wherein when the absolute value of the difference between the first turbidity unit and the second turbidity unit is less than a preset turbidity unit, the first control module controls the backwash mechanism to start and flush the filter material layer stacked thereon, and at the same time, the flap valve and the drain hole are in a blocked state, and the backwash mechanism flushes impurities in the filter material layer to one side of the filter material layer; when the first time is greater than, the first control module controls the backwash mechanism to close, so that part of the filter material impacted by the backwash mechanism is precipitated, and at the same time, impurities lighter than the filter material are precipitated on one side of the filter material layer; when the first time is greater than, the first control module controls the backwash mechanism to start, the flap valve and the drain hole are in a unobstructed state, so that the filter tank is connected to the wastewater tank, the backwash mechanism flushes the impurities so that they are mixed into the wastewater, so that the impurities can flow into the wastewater tank with the wastewater through the drain hole, thereby avoiding the flap valve filter tank being backwashed for a preset time, resulting in poor backwashing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic structural diagram of the flap valve filter system disclosed in the embodiment of the present application;

[0030] Figure 2 A top view of the flap valve filter system disclosed in an embodiment of the present application;

[0031] Figure 3 for Figure 2 sectional view of .

[0032] Among them: base 110, beam 111, first drive member 112, first bracket 113, second bracket 114, second drive member 115, air source assembly 120, anti-sedimentation flushing pipeline 130, flushing section 131, first section 132, connecting section 133, second section 134, water source assembly 140, filter tank 210, drainage hole 211, wastewater tank 220, filter material layer 230, backwash mechanism 300, flap valve 400. DETAILED DESCRIPTION

[0033] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0034] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an element centered thereon. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "vertical," "horizontal," "left," "right," "top," "bottom," "bottom end," "top end," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] like Figures 1 to 3 As shown, the present application discloses a flap valve filter system, which includes a filter 210, a filter material layer 230, a backwash mechanism 300, a first control module, a wastewater tank 220, a timing module and a flap valve 400.

[0037] The filter tank 210 is a filtering functional component of the flap valve filter tank system, and the wastewater tank 220 is a wastewater collection functional component of the flap valve filter tank system.

[0038] Specifically, the backwashing mechanism 300 is used to flush impurities in the filter layer 230 to one side of the filter layer. The timing module is used to record the first time when the backwashing mechanism 300 is started. The filter tank 210 is provided with a connected inner cavity and an opening. The wastewater tank 220 is connected to the filter tank 210. The filter layer 230 and the backwashing mechanism 300 are passed through the opening and are stacked in sequence in the inner cavity. The filter tank 210 is provided with a drainage hole 211 connected to the inner cavity. The wastewater tank 220 is connected to the inner cavity through the drainage hole 211. The flap valve 400 is set in the drainage hole 211. A first turbidity meter is provided in the filter tank 210, and the first turbidity meter is used to obtain a first turbidity unit in the filter tank 210. A second turbidity meter is provided in the wastewater tank 220, and the second turbidity meter is used to obtain a second turbidity unit in the wastewater tank 220. The timing module, the first turbidity meter, and the second turbidity meter are all electrically connected to the first control module. The first control module is used to control the start or stop of the backwashing mechanism 300.

[0039] During use of the flap valve filter system, when the absolute value of the difference between the first turbidity unit in the filter 210 obtained by the first turbidity meter and the second turbidity unit in the wastewater tank 220 obtained by the second turbidity meter is less than the preset turbidity unit, the first control module controls the backwash mechanism 300 to start and flush the filter material layer 230 stacked thereon, that is, flush in a direction opposite to the direction of gravity. At the same time, the flap valve 400 and the drain hole 211 are in a blocked state, thereby preventing the filter 210 from communicating with the wastewater tank 220. The backwash mechanism 300 flushes impurities in the filter material layer 230 to one side of the filter material layer 230. When the first time is greater than the first preset time, the first control module controls the backwash mechanism 300 to close, so that part of the filter material impacted by the backwash mechanism 300 is precipitated, and at the same time, impurities lighter than the filter material are precipitated on one side of the filter material layer 230; when the first time is greater than the second preset time, the first control module controls the backwash mechanism 300 to start, and the flap valve 400 and the drainage hole 211 are in a unobstructed state, so that the filter tank 210 is connected to the wastewater tank 220, and the backwash mechanism 300 flushes the impurities so that they are mixed into the wastewater, so that the impurities can flow with the wastewater through the drainage hole to the wastewater tank 220.

[0040] In the flap valve filter system disclosed in the present application, it includes a filter 210, a filter layer 230, a backwash mechanism 300, a first control module, a wastewater tank 220, a timing module and a flap valve 400. The backwash mechanism 300 is used to flush impurities in the filter layer 230. The timing module is used to record the first time when the backwash mechanism 300 is started. The filter 210 is provided with a connected inner cavity and an opening. The wastewater tank 220 is connected to the filter 210. The filter layer 230 and the backwash mechanism 300 pass through the opening and are sequentially stacked in the inner cavity. The filter 210 is opened. A drainage hole 211 is provided that is connected to the inner cavity. The wastewater tank 220 is connected to the inner cavity through the drainage hole 211. A flap valve 400 is provided in the drainage hole 211. A first turbidity meter is provided in the filter tank 210. The first turbidity meter is used to obtain a first turbidity unit in the filter tank 210. A second turbidity meter is provided in the wastewater tank 220. The second turbidity meter is used to obtain a second turbidity unit in the wastewater tank 220. The timing module, the first turbidity meter and the second turbidity meter are all electrically connected to the first control module. The first control module is used to control the backwash mechanism 300 to start or stop. The above structure is composed of a first control module, a first turbidity meter, a second turbidity meter and a timing module. When the absolute value of the difference between the first turbidity unit and the second turbidity unit is less than the preset turbidity unit, the first control module controls the backwash mechanism 300 to start and flush the filter material layer 230 stacked thereon. At the same time, the flap valve 400 and the drain hole 211 are in a blocked state, and the backwash mechanism 300 flushes the impurities in the filter material layer 230 to one side of the filter material layer 230. When the first time is greater than the first preset time, the first control module controls the backwash mechanism 300 to close, so that the backwash mechanism 300 is turned off. Part of the filter material impacted by the flushing mechanism 300 is precipitated, and at the same time, impurities lighter than the filter material are precipitated on one side of the filter material layer 230; when the first time is greater than the second preset time, the first control module controls the backwashing mechanism 300 to start, and the flap valve 400 and the drainage hole 211 are in a unobstructed state, so that the filter tank 210 is connected with the wastewater tank 220, and the backwashing mechanism 300 flushes the impurities so that they are mixed with the wastewater, so that the impurities can flow with the wastewater through the drainage hole to the wastewater tank 220, thereby avoiding the flap valve filter tank being backwashed for a preset time, resulting in a poor backwashing effect.

[0041] Of course, the flap valve 400 and the drain hole 211 can be in an unobstructed state or a blocked state through manual operation, or the flap valve filter system can also include a third control module, which controls the flap valve 400 and the drain hole 211 to be in an unobstructed state or a blocked state, and the third control module can be electrically connected to the timing module.

[0042] In an embodiment of the present application, the flap valve filter system may further include a cleaning and flushing mechanism and a second control module. Specifically, the second control module may be electrically connected to the timing module, and the cleaning and flushing mechanism may be arranged on the filter. The cleaning and flushing mechanism is used to prevent impurities from settling to one side of the filter material layer 230, and the second control module is used to control the start or shut down of the cleaning and flushing mechanism.

[0043] During the use of the flap valve filter system, when the first time is greater than the second preset time, the second control module controls the cleaning and flushing mechanism to start, and the cleaning and flushing mechanism flushes the impurities deposited on one side of the filter layer 230, so that the impurities are mixed into the wastewater, so that the impurities can flow with the wastewater through the drainage hole 211 to the wastewater pool, thereby improving the filtering effect of the filter layer in the flap valve filter system. At the same time, the impact force of the cleaning and flushing mechanism can assist the unsettled filter material to precipitate, thereby preventing the filter material from flowing with the wastewater through the drainage hole to the wastewater pool, thereby preventing the filter material from losing the filter layer 230.

[0044] In a further technical solution, the cleaning and flushing mechanism may include a base 110, an air source assembly 120, a first air pump, a first control valve and an anti-sedimentation flushing pipeline 130. Specifically, the base 110 and the air source assembly 120 can be arranged on the filter tank 210. The anti-sedimentation flushing pipeline 130 may include a flushing section 131, a first section 132 and a connecting section 133. One end of the first section 132 can be connected and communicated with the flushing section 131, one end of the connecting section 133 can be connected to the flushing section 131, and the other end of the connecting section 133 can be arranged on the base 110. The air source assembly 120 can be communicated with one end of the first air pump, the other end of the first air pump can be connected to one end of the first control valve, and the other end of the first control valve can be connected and communicated with the other end of the first section 132.

[0045] During the use of the flap valve filter system, when the flap valve filter system is being cleaned and flushed, the flushing section 131 can be adjacent to the filter material layer 230, the first control valve is in a unobstructed state, and the first air pump drives the flushing gas in the air source assembly 120 to move along the first section 132 to the flushing section 131 and spray out. The flushing gas can impact the impurities, and the impurities can be mixed into the wastewater, thereby preventing the impurities from settling on one side of the filter material layer 230.

[0046] The above structure uses the air source component 120, the first air pump, the first control valve and the anti-sedimentation flushing pipeline 130 to stir the wastewater by impact gas, so that impurities are affected by the movement of the wastewater and cannot be precipitated, so that the impurities can flow with the wastewater through the drainage hole into the wastewater tank 220, thereby improving the filtering effect of the filter layer 230 in the flap valve filter system.

[0047] In an embodiment of the present application, the cleaning and flushing mechanism may also include a water source component 140, a second control valve and a first water pump. Specifically, the anti-sedimentation flushing pipeline 130 also includes a second section 134, the water source component 140 is arranged on the filter tank 210, one end of the second section 134 is connected to and communicated with the flushing section 131, the water source component 140 is communicated with one end of the first water pump, the other end of the first water pump is connected to one end of the second control valve, and the other end of the second control valve is connected to and communicated with the other end of the second section 134.

[0048] During the use of the flap valve filter system, when the flap valve filter system is being cleaned and flushed, the flushing section 131 can be adjacent to the filter layer 230, the second control valve is in a unobstructed state, and the first water pump drives the flushing water flow in the water source component 140 to move along the second section 134 to the flushing section 131 and spray out. The flushing gas can impact the impurities, and the impurities can be mixed into the wastewater, thereby preventing the impurities from settling on one side of the filter layer 230.

[0049] The above structure uses the water source component 140, the second control valve and the first water pump to stir the wastewater through the flushing water flow, so that impurities are affected by the movement of the wastewater and cannot be precipitated. At the same time, it can also increase the water content in the wastewater, so that it can carry more impurities, so that the impurities can flow with the wastewater through the drainage hole to the wastewater tank 220, thereby improving the filtering effect of the filter layer 230 in the flap valve filter system.

[0050] In addition, in the above structure, when the flap valve filter system is being cleaned and flushed, the first control valve can be started alone, or the second control valve can be started alone, or both the first control valve and the second control valve can be started to achieve flushing and cleaning, and this application does not impose any restrictions on this.

[0051] In an embodiment of the present application, the base 110 may include a beam 111, a first driving member 112, a first bracket 113 and a second bracket 114. Specifically, the first bracket 113 and the second bracket 114 can be arranged on opposite sides of the backwash flap valve 400 filter tank 210, one end of the beam 111 can be movably connected to the first bracket 113, and the other end of the beam 111 can be movably connected to the second bracket 114, the first driving member 112 can be arranged on the beam 111, and the other end of the connecting section 133 can be arranged on the beam 111, the first driving member 112 can drive the beam 111 to move, the connecting section 133 can move with the beam 111, and the flushing section 131 can move with the connecting section 133.

[0052] The above structure drives the crossbeam 111 to move through the first driving member 112 so that the connecting section 133 moves with the crossbeam 111, and the flushing section 131 moves with the connecting section 133, so that the flushing section 131 can flush impurities over a larger area by moving, so that more impurities can be discharged by being mixed into the wastewater, thereby improving the flushing effect of the filter material layer 230.

[0053] The above structure drives the crossbeam 111 to move through the first driving member 112 so that the connecting section 133 moves with the crossbeam 111, and the flushing section 131 moves with the connecting section 133, so that the flushing section 131 can flush impurities over a larger area by moving, so that more impurities can be discharged by being mixed into the wastewater, thereby improving the flushing effect of the filter material layer 230.

[0054] In another optional solution, the base 110 may include a crossbeam 111, a first driving member 112, a second driving member 115, a first bracket 113 and a second bracket 114. Specifically, the first bracket 113 and the second bracket 114 may be arranged on opposite sides of the backwash flap valve 400 filter tank 210, one end of the crossbeam 111 may be movably connected to the first bracket 113, and the other end of the crossbeam 111 may be movably connected to the second bracket 114. The first driving member 112 and the second driving member 115 are both It can be arranged on the beam 111, the first driving member 112 can drive the beam 111 to move along the first direction, the connecting section 133 can move along the first direction with the beam 111, and the flushing section 131 can move along the first direction with the connecting section 133, the second driving member 115 can drive the connecting section 133 to move along the second direction, and the flushing section 131 can move along the second direction with the connecting section 133, wherein the first direction and the second direction intersect, the first direction is the moving direction of the beam 111, and the second direction can be consistent with the direction of gravity.

[0055] The above structure drives the crossbeam 111 to move along the first direction through the first driving member 112, so that the connecting section 133 moves with the crossbeam 111, and the flushing section 131 moves along the first direction with the connecting section 133, so that the flushing section 131 can flush the impurities over a larger area by moving, so that more impurities can be discharged by being mixed into the wastewater. At the same time, the second driving member 115 drives the connecting section 133 to move along the second direction, and the flushing section 131 moves along the second direction, so that the flushing section 131 can flush close to or away from the filter material layer 230, so that the impurities can be impacted into the wastewater while preventing the filter material from being impacted and discharged with the wastewater, thereby further improving the flushing effect on the filter material layer 230.

[0056] In a further technical solution, a first guide rail and a rack may be provided on the first bracket 113. Specifically, a second guide rail may be provided on the second bracket 114. The first driving member 112 may include a connected driving motor and a driving gear. The driving motor may be provided at one end of the beam 111. The driving gear may engage with the rack. A first slider may be provided at one end of the beam 111. The first slider may slide with the first guide rail. A second slider may be provided at the other end of the beam 111. The second slider may slide with the second guide rail. The second driving member 115 may be a driving cylinder.

[0057] Based on the flap valve filter system disclosed in the embodiment of the present application, the embodiment of the present application discloses a control method. The flap valve filter system involved is the flap valve filter system described in the embodiment above. The backwashing method includes:

[0058] Step 101: The first turbidity meter is started to obtain a first turbidity unit in the filter tank 210;

[0059] Step 102: The second turbidity meter is started to obtain a second turbidity unit in the wastewater tank 220;

[0060] Step 103: When the difference between the second turbidity unit and the first turbidity unit is less than the preset turbidity unit, the first control module controls the backwash mechanism 300 to start, the timing module starts, and records the first time of the backwash mechanism 300 starting. The flap valve 400 and the drain hole 211 are in a blocked state.

[0061] In this step, the backwash mechanism 300 is started, and the flap valve 400 and the drain hole 211 are in a blocked state, so that the filter tank 210 forms an independent space, and the backwash mechanism 300 flushes the filter material layer 230 in a direction opposite to the direction of gravity. The backwash mechanism 300 flushes the impurities in the filter material layer 230 to one side of the filter material layer 230. Among them, the preset turbidity unit refers to the value obtained by the staff after a large number of experimental tests. When the value of the second turbidity unit is closer to the second turbidity unit, the water quality of the filter tank 210 and the wastewater tank 220 is closer, which proves that the filtration effect of the filter material layer 230 is not good. The preset turbidity unit can be between 1NTU and 3NTU.

[0062] Step 104: When the first time is greater than the first preset time, the first control module controls the backwash mechanism 300 to be closed;

[0063] In this step, the first control module controls the backwash mechanism 300 to be closed, so that part of the filter material impacted by the backwash mechanism 300 is precipitated. At the same time, impurities lighter than the filter material are precipitated on one side of the filter material layer 230. Among them, the first preset time refers to the result obtained by the staff after a large number of experimental tests. Within the first preset time, the backwash mechanism 300 has the best flushing effect on the filter material layer 230. The first preset time can be between 120s and 130s.

[0064] Step 105 : When the first time is greater than the second preset time, the first control module controls the backwash mechanism 300 to start, and the flap valve 400 and the drain hole 211 are in an unobstructed state.

[0065] In this step, the first control module controls the backwash mechanism 300 to start, and the flap valve 400 and the drain hole 211 are in a unobstructed state, so that the filter 210 is connected to the wastewater tank 220, and the backwash mechanism 300 flushes impurities so that they are mixed with the wastewater, so that the impurities can flow into the wastewater tank 220 with the wastewater through the drain hole 211, thereby avoiding the flap valve filter tank from backwashing for a preset time and resulting in a poor backwashing effect. Among them, the second preset time refers to the result obtained by the staff through a large number of experimental tests. After the first preset time, the filter material that has been impacted in the filter layer 230 needs to be settled. The difference between the second preset time and the first preset time can enable the filter material to be better settled. The second preset time can be between 145s and 155s.

[0066] In a further technical solution, it also includes:

[0067] Step 201: When the first time is greater than the second preset time, the second control module controls the cleaning and flushing mechanism to start;

[0068] In this step, the second control module controls the cleaning and flushing mechanism to start, and the cleaning and flushing mechanism flushes the impurities deposited on one side of the filter layer 230 so that the impurities are mixed into the wastewater, so that the impurities can flow into the wastewater pool with the wastewater through the drainage hole 211.

[0069] Step 202 : When the first time is greater than the third preset time, the first control module controls the backwash mechanism 300 to be closed.

[0070] In this step, the first control module controls the backwash mechanism 300 to close, thereby preventing the backwash mechanism 300 from over-flushing and causing the filter material to be impacted, thereby preventing the loss of the filter material. The third preset time refers to the result obtained by the staff after a large number of experimental tests. After the second preset time, there is still filter material in the filter layer 230 that is impacted, and the cleaning and flushing mechanism has been turned on. The cleaning and flushing mechanism can be used to prevent impurities from precipitating, thereby ensuring that impurities can be discharged with the wastewater. The third preset time can be between 175s and 185s.

[0071] In a further technical solution, when the first time is greater than the second preset time, the second control module controls the cleaning and flushing mechanism to start, further comprising:

[0072] Step 301: The first control valve controls the flow between the first air pump and the first section 132. The first air pump drives the flushing air in the air source assembly to move along the first section 132 to the flushing section 131 and spray onto the filter material layer 230.

[0073] Step 302 , the second control valve controls the flow between the first water pump and the second section 134 , and the first water pump drives the flushing water in the water source assembly to move along the second section 134 to the flushing section 131 and spray onto the filter material layer 230 .

[0074] Of course, the first control valve can also control the smooth flow between the first air pump and the first section 132, while the second control valve controls the smooth flow between the first water pump and the second section 134, so that the first air pump drives the flushing gas in the air source component 120 to move along the first section 132 to the flushing section 131 for spraying, while the first water pump drives the flushing water flow in the water source component 140 to move along the second section 134 to the flushing section 131 for spraying.

[0075] In a further technical solution, when the first time is greater than the second preset time, the second control module controls the cleaning and flushing mechanism to start, further comprising:

[0076] Step 401 : The first driving member 112 drives the crossbeam 111 to move along a first direction, the connecting section 133 moves along the first direction along with the crossbeam 111 , and the flushing section 131 moves along the first direction along with the connecting section 133 .

[0077] In this step, the impact force on the filter material layer 230 is adjusted by adjusting the position of the flushing section 131 in the first direction, so that the flushing section 131 flushes the impurities over a larger area in the first direction.

[0078] Step 402 : The second driving member 115 drives the connecting section 133 to move along the second direction, and the flushing section 131 can move along the second direction with the connecting section 133 .

[0079] In this step, the impact force on the filter material layer 230 is adjusted by adjusting the position of the flushing section 131 in the second direction, thereby avoiding the filter material from being impacted and discharged with the wastewater. At the same time, a larger area of ​​impurities can be flushed in the second direction.

[0080] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A flap valve filter system, characterized in that: The invention comprises a filter tank, a filter material layer, a backwash mechanism, a first control module, a wastewater tank, a timing module and a flap valve, wherein the backwash mechanism is used to flush impurities in the filter material layer, the timing module is used to record the first time when the backwash mechanism is started, the filter tank is provided with a connected inner cavity and an opening, the wastewater tank is connected to the filter tank, the filter material layer and the backwash mechanism pass through the opening and are sequentially stacked in the inner cavity, the filter tank is provided with a drainage hole connected to the inner cavity, the wastewater tank is connected to the inner cavity through the drainage hole, the flap valve is arranged in the drainage hole, and the filter tank A first turbidity meter is provided in the filter tank, and the first turbidity meter is used to obtain a first turbidity unit in the filter tank. A second turbidity meter is provided in the wastewater tank, and the second turbidity meter is used to obtain a second turbidity unit in the wastewater tank. The timing module, the first turbidity meter and the second turbidity meter are all electrically connected to the first control module, and the first control module is used to control the start or shut down of the backwash mechanism; the flap valve filter system also includes a cleaning and flushing mechanism and a second control module, and the second control module is electrically connected to the timing module. The cleaning and flushing mechanism is provided on the filter tank, and the cleaning and flushing mechanism is electrically connected to the timing module. The cleaning mechanism is used to prevent the impurities from settling to one side of the filter material layer, and the second control module is used to control the start or shut down of the cleaning and flushing mechanism; the cleaning and flushing mechanism includes a base, an air source component, a first air pump, a first control valve and an anti-sedimentation flushing pipeline, the base and the air source component are both arranged on the filter tank, the anti-sedimentation flushing pipeline includes a flushing section, a first section and a connecting section, one end of the first section is connected to and communicated with the flushing section, one end of the connecting section is connected to the flushing section, the other end of the connecting section is arranged on the base, the air source component is connected to one end of the first air pump The other end of the first air pump is connected to one end of the first control valve, and the other end of the first control valve is connected to and connected with the other end of the first section; the cleaning and flushing mechanism also includes a water source component, a second control valve and a first water pump, and the anti-sedimentation flushing pipeline also includes a second section, the water source component is arranged on the filter tank, one end of the second section is connected to and connected with the flushing section, the water source component is connected to one end of the first water pump, the other end of the first water pump is connected to one end of the second control valve, and the other end of the second control valve is connected to and connected with the other end of the second section.

2. The flap valve filter system according to claim 1, characterized in that: The base includes a crossbeam, a first driving member, a second driving member, a first bracket and a second bracket. The first bracket and the second bracket are arranged on opposite sides of the filter tank. One end of the crossbeam is movably connected to the first bracket, and the other end of the crossbeam is movably connected to the second bracket. The first driving member and the second driving member are both arranged on the crossbeam. The first driving member can drive the crossbeam to move along the first direction, the connecting section can move along the crossbeam along the first direction, the flushing section can move along the connecting section along the first direction, the second driving member can drive the connecting section to move along the second direction, and the flushing section can move along the connecting section along the second direction, wherein the first direction and the second direction intersect.

3. The flap valve filter system according to claim 2, characterized in that: A first guide rail and a rack are provided on the first bracket, a second guide rail is provided on the first bracket, the first driving member includes a connected driving motor and a driving gear, the driving motor is provided at one end of the beam, the driving gear is engaged with the rack, a first slider is provided at one end of the beam, the first slider slides with the first guide rail, a second slider is provided at the other end of the beam, the second slider slides with the second guide rail, and the second driving member is a driving cylinder.

4. A backwashing method for a flap valve filter system, applicable to the flap valve filter system according to any one of claims 2 to 3, characterized in that: The backwashing method comprises: The first turbidity meter is started, and the first turbidity meter obtains a first turbidity unit in the filter tank; The second turbidity meter is started, and the second turbidity meter obtains a second turbidity unit in the wastewater pool; When the difference between the second turbidity unit and the first turbidity unit is less than a preset turbidity unit, the first control module controls the backwash mechanism to start, the timing module starts, and records the first time of the backwash mechanism start-up, and the flap valve and the drain hole are in a blocked state; When the first time is greater than a first preset time, the first control module controls the backwash mechanism to be closed; When the first time is greater than the second preset time, the first control module controls the backwash mechanism to start, and the flap valve and the drain hole are in an unobstructed state.

5. The backwashing method according to claim 4, characterized in that: Also includes: When the first time is greater than the second preset time, the second control module controls the cleaning and flushing mechanism to start; When the first time is greater than a third preset time, the first control module controls the backwash mechanism to be closed.

6. The backwashing method according to claim 5, characterized in that: When the first time is greater than the second preset time, the second control module controls the cleaning and flushing mechanism to start, further comprising: The first control valve controls the flow between the first air pump and the first section, and the first air pump drives the flushing air flow in the air source assembly to move along the first section to the flushing section and spray onto the filter material layer; The second control valve controls the flow between the first water pump and the second section. The first water pump drives the flushing water in the water source assembly to move along the second section to the flushing section and spray onto the filter material layer.

7. The backwashing method according to claim 5, characterized in that: When the first time is greater than the second preset time, the second control module controls the cleaning and flushing mechanism to start, further comprising: The first driving member drives the crossbeam to move along a first direction, the connecting section moves along the first direction with the crossbeam, and the flushing section moves along the first direction with the connecting section; The second driving member drives the connecting section to move along a second direction, and the flushing section can move along the second direction along with the connecting section.

Images