All-vanadium redox flow battery storage device and use method thereof

Abstract

The invention discloses an all-vanadium redox flow battery storage device and a use method thereof, and relates to the technical field of all-vanadium redox flow batteries, and the all-vanadium redox flow battery storage device comprises a turbulent flow part, a filtering part and a cleaning part. The invention further discloses a using method of the all-vanadium redox flow battery storage device. The using method comprises the following steps of storage, liquid pumping in the first cavity, liquid pumping in the second cavity, liquid turbulence, filtering and cleaning. The top, the middle and the bottom in the cavity are subjected to turbulent flow through the turbulent flow part, electrolyte deposition is prevented, and therefore the utilization rate of the electrolyte is increased; the filtering part is arranged to filter electrolyte containing impurities after reaction, so that the impurities are prevented from blocking a pipeline; and the cleaning part is arranged to clean the filter screen II, so that the filtering effect on the electrolyte is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of all-vanadium liquid flow batteries, and in particular relates to an all-vanadium liquid flow battery storage device and a use method thereof. Background Art

[0002] The electrolyte in the all-vanadium flow battery plays a vital role, which is responsible for storing and transferring energy. The electrolyte contains vanadium ions in different oxidation states. During the charging process, the vanadium ions are reduced to store energy, and during the discharge, they are oxidized to release energy for use by the external load. Through this cycle, the electrolyte ensures the efficient energy conversion and stability of the battery. At the same time, its liquid properties allow the battery capacity to be flexibly adjusted, making it suitable for large-scale energy storage and the deployment of renewable energy.

[0003] The patent with publication number CN118336035A discloses an all-vanadium liquid flow battery storage device, a method of using the same, and an all-vanadium liquid flow battery, comprising: a storage container; a flexible diaphragm, the flexible diaphragm is fixed inside the storage container by a fixing component, and the storage container is divided into a first storage chamber and a second storage chamber; a total inlet and a total outlet; the first storage chamber and the second storage chamber are respectively provided with a first inlet and a second inlet, and the first inlet and the second inlet are both connected to the total inlet through a pipeline; the first storage chamber and the second storage chamber are respectively provided with a first outlet and a second outlet, and the first outlet and the second outlet are both connected to the total outlet through a pipeline; a valve component, used to control the electrolyte to flow from the first outlet to the second inlet, or the electrolyte to flow from the second outlet to the first inlet; it can reduce the equipment volume and operating energy consumption while improving the utilization rate of the electrolyte.

[0004] However, in actual use, it is found that the above technical solution still has at least the following problems:

[0005] 1. Under the action of the circulation pump, the electrolyte flows into the battery stack, and then flows into the storage tank after the battery stack reaction. However, the flow generated by the circulation pump alone is not enough to completely mix the electrolyte in the larger storage tank. When the flow effect is poor, the electrolyte in the storage tank will cause deposition over a long period of time.

[0006] 2. Impurities are generated in the electrolyte after the battery stack reaction, which will affect the use of the electrolyte and block the pipeline when it flows into the storage tank.

[0007] Therefore, it is necessary to invent an all-vanadium liquid flow battery storage device and a method of using the same to solve the above problems. Summary of the invention

[0008] The purpose of the present invention is to provide an all-vanadium liquid flow battery storage device and a method of using the same in order to solve the problems raised in the above-mentioned background technology in view of the above-mentioned existing technical problems.

[0009] The present invention provides an all-vanadium liquid flow battery storage device, comprising a liquid storage tank; a sealing plate, which is sealingly slidably arranged in the liquid storage tank; the sealing plate divides the liquid storage tank into chamber one and chamber two; an upper pipeline, one end of which is connected to the top of chamber one, and the other end is connected to the top of chamber two; a lower pipeline, one end of which is connected to one side of the bottom of chamber one, and the other end is connected to one side of the bottom of chamber two; the middle parts of the upper pipeline and the lower pipeline are respectively connected with a liquid inlet pipe and a liquid outlet pipe; the chamber one and the chamber two are respectively provided with multiple groups of blocks; and also includes: a spoiler, which is provided in multiple groups and is provided in the middle of both sides of the liquid storage tank, and the multiple groups of spoilers are connected to each other. The spoilers are arranged in groups, and the plurality of groups correspond to chamber one and chamber two, and are used to turb the electrolyte in the corresponding chambers; the filter parts are arranged in groups, and are arranged in the tops on both sides of the liquid storage tank; the plurality of groups of filter parts are symmetrically arranged, and the plurality of groups of filter parts correspond to chamber one and chamber two, and the movement of the plurality of groups of spoilers triggers the movement of the filter parts to the bottom of the upper pipeline liquid inlet; the cleaning parts are arranged in groups, and are arranged in the tops on both sides of the liquid storage tank; the plurality of cleaning parts are symmetrically arranged, and the plurality of groups of filter parts correspond to chamber one and chamber two, and the plurality of cleaning parts clean the filter parts under the action of the spoilers.

[0010] Preferably, each of the spoiler parts includes: a spoiler box, which is fixedly arranged in the middle of one side of the liquid storage tank and extends into the liquid storage tank; a push plate, which is sealingly slidably arranged in the spoiler box; an electric telescopic member, whose fixed end is fixedly arranged on the side of the spoiler box away from the liquid storage tank, and whose extended end passes through the spoiler box and is fixedly arranged with one end of the push plate; injection holes, which are arranged in multiple groups and are opened at one end of the spoiler box close to the liquid storage tank; injection heads, which are arranged in multiple groups and are respectively fixedly arranged on the upper side wall and the lower side wall inside the liquid storage tank; liquid pipelines, which are arranged in multiple groups, one group of liquid pipelines is located at the top of the spoiler box, and the other group of liquid pipelines is located at the bottom of the spoiler box, and one end of the multiple groups of liquid pipelines are connected with the corresponding injection heads, and the other ends are connected with the end of the spoiler box away from the liquid storage tank.

[0011] Preferably, each of the filter parts includes: a negative pressure box, which is fixedly arranged on the top of the spoiler box, and the negative pressure box is connected to the spoiler box; a T-shaped plate, which is sealingly slidably arranged in the negative pressure box, and its bottom extends into the spoiler box; wedge-shaped holes, which are provided in multiple groups and opened at one end of the T-shaped plate; wedge blocks, which are provided in multiple groups and fixedly arranged at one end of the push plate; limiting holes, which are provided in multiple groups and opened at one end of the spoiler box away from the liquid storage tank; limiting columns, which are provided in multiple groups, are slidably sealed in the limiting holes, and can move along the limiting holes into the spoiler box.

[0012] Preferably, each of the filter parts also includes: a rectangular hole, which is opened on one side of the top of the liquid storage tank; a filter screen, which is fixedly arranged at one end of the bottom of the rectangular hole and is located in the liquid storage tank; a collecting box, which is fixedly arranged at one end of the top of the liquid storage tank, and the collecting box is connected to the liquid storage tank through the rectangular hole.

[0013] Preferably, each of the filter parts also includes: air storage columns, which are arranged in two groups and are fixedly arranged at one end of the collecting box away from the liquid storage tank, and the air storage columns are connected to the collecting box; a U-shaped tube, one end of which is connected to one group of air storage columns, and the other end is connected to the other group of air storage columns; a connecting tube, the top of which is connected to the middle of the U-shaped tube, and the bottom of which is connected to the top of the negative pressure box.

[0014] Preferably, each of the filter parts also includes: push pins, which are arranged in two groups and seal and slide in the corresponding air storage columns; springs, which are arranged in two groups and are arranged between the corresponding air storage columns and the push pins; a fixed plate, which is fixedly arranged at one end of the two groups of push pins; fixed columns, which are arranged in multiple groups and are fixedly arranged at one end of the fixed plate away from the push pins; filter screen two, which is fixedly arranged at one end of the multiple groups of fixed columns; and an L-shaped plate, which is fixedly arranged at one end of the top of filter screen two.

[0015] Preferably, each of the filter parts further includes: a drain pipe, the top of which is connected to the bottom of the collection box, and the bottom of which is connected to the top of the negative pressure box; and a solenoid valve 1, which is arranged in the middle of the drain pipe.

[0016] Preferably, each of the cleaning parts includes: a water storage chamber, which is opened at the top of the liquid storage tank and is located below the rectangular hole; spray holes, which are arranged in multiple groups and are arranged at the bottom of the rectangular hole and are connected to the water storage chamber; a fluid tube, which is fixedly arranged at the bottom of the water storage chamber and is connected to the water storage chamber, and the bottom of the fluid tube is connected to the liquid pipeline located at the top of the spoiler box; and a second solenoid valve, which is fixedly arranged at the bottom of the fluid tube.

[0017] Preferably, it also includes: valve one, which is arranged at one end of the upper pipeline close to chamber one; valve two, which is arranged at one end of the upper pipeline close to chamber two; valve three, which is arranged at one end of the lower pipeline close to chamber one; valve four, which is arranged at one end of the lower pipeline close to chamber two.

[0018] The present invention also discloses a process for preparing anhydrous formic acid, comprising the following steps:

[0019] Step 1: storing, storing all the electrolyte in chamber 1, so that the sealing plate contacts the block in chamber 2;

[0020] Step 2: Pumping liquid from chamber 1, pumping the electrolyte in chamber 1 into the stack through the circulation pump, the lower pipeline and the liquid outlet pipe for reaction. At this time, control valve 3 and valve 2 to be opened, and valve 1 and valve 4 to be closed. After the stack reaction, the electrolyte enters chamber 2 through the liquid inlet pipe and the upper pipeline, and pushes the sealing plate to move into chamber 1 until the sealing plate moves to chamber 1 and contacts the block;

[0021] Step 3, extracting liquid from chamber 2. When the electrolyte level in chamber 1 is lower than the preset value, the controller controls valve 3 and valve 2 to close, valve 1 and valve 4 to open, and the electrolyte in chamber 2 is pumped into the battery stack through the circulation pump, the lower pipeline and the liquid outlet pipe for reaction. The reacted electrolyte enters chamber 1 through the liquid inlet pipe and the upper pipeline, and pushes the sealing plate to move into chamber 2 until the sealing plate moves to chamber 2 and contacts the block; repeat steps 2 to 3 until the charging or discharging of the all-vanadium liquid flow battery is completed;

[0022] Step 4: Liquid turbulence, wherein the electrolytes of step 3 and step 4 are impacted back and forth by the turbulence part to prevent the electrolytes from being deposited;

[0023] Step 5: filtering, filtering the electrolyte reacted in step 3 and step 4 through a filtering unit;

[0024] Step six, cleaning, clean the filter screen 2 in the filter part through the cleaning part.

[0025] The beneficial effects of the present invention are:

[0026] 1. The present invention cooperates with components such as an electric telescopic member, a push plate and a spoiler box. The controller controls the electric telescopic member to drive the push plate to move toward the liquid storage tank to a first position. When moving, the push plate pushes the electrolyte in the first chamber to be sprayed out from the spray hole to impact the electrolyte in the middle of the first chamber to prevent electrolyte deposition; at the same time, during the movement of the push plate toward the liquid storage tank, negative pressure is generated in the second chamber, and electrolyte is sucked into the second chamber through the liquid pipeline and the spray head. When the electric telescopic member drives the push plate to move away from the liquid storage tank to the initial position, the push plate pushes the electrolyte in the second chamber to be sprayed to the top and bottom of the first chamber through the liquid pipeline and the spray head to cause an impact, thereby preventing electrolyte deposition, thereby improving the circulation and utilization effect of the electrolyte.

[0027] 2. The present invention sets a filter part. When the electrolyte contains impurities after the battery stack reaction, the limit column and the push plate cooperate to release the limit of the T-plate, so that the filter part moves to the inlet of the liquid inlet pipe, and filters the electrolyte after the reaction to prevent impurities from clogging the pipeline and increase the utilization rate of the electrolyte, thereby improving the performance of the all-vanadium liquid flow battery.

[0028] 3. The present invention sets a cleaning part to open the second solenoid valve on the liquid pipe, so that the push plate moves away from the liquid storage tank under the action of the electric telescopic part, and squeezes the electrolyte in the second chamber, so that the electrolyte flows into the water storage chamber through the liquid pipe, and cleans the second filter screen through the spray hole, thereby improving the filtering effect of the electrolyte. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 It is a schematic diagram of the cross-sectional structure of the liquid storage tank of the present invention.

[0031] Figure 3 It is a schematic diagram of the matching structure of the wedge block and the wedge hole of the present invention.

[0032] Figure 4 It is a schematic diagram of the cross-sectional structure of the gas storage column of the present invention.

[0033] Figure 5 It is a schematic structural diagram of a cleaning unit of the present invention.

[0034] Figure 6 It is a schematic diagram of the initial position structure of the push plate of the present invention.

[0035] Figure 7 It is a structural schematic diagram of the push plate of the present invention moving to a first position in a direction close to the liquid storage tank.

[0036] Figure 8 It is a structural schematic diagram of the push plate of the present invention moving away from the liquid storage tank to the first position.

[0037] Fig. 9 It is a structural schematic diagram of the push plate of the present invention moving away from the liquid storage tank to the second position.

[0038] Fig.10 It is a structural schematic diagram of the filter unit of the present invention in a filtering state.

[0039] In the figure: 1, liquid storage tank; 2, sealing plate; 3, chamber 1; 4, chamber 2; 5, upper pipeline; 6, lower pipeline; 8, liquid inlet pipe; 9, liquid outlet pipe; 10, spoiler; 11, filter; 12, cleaning; 13, valve 1; 14, valve 2; 15, valve 3; 16, valve 4; 1001, spoiler box; 1002, push plate; 1003, electric telescopic part; 1004, injection hole; 1005, injection head; 1006, liquid pipeline; 1110, negative pressure box; 1111, T-plate; 1112, wedge hole; 111 3. Wedge block; 1114. Limit hole; 1115. Limit column; 1116. Rectangular hole; 1117. Filter screen one; 1118. Collecting box; 1119. Gas storage column; 1120. U-shaped tube; 1121. Connecting tube; 1122. Push column; 1123. Spring; 1124. Fixed plate; 1125. Fixed column; 1126. Filter screen two; 1127. L-shaped plate; 1128. Drain pipe; 1129. Solenoid valve one; 1201. Water storage chamber; 1202. Spray hole; 1203. Fluid pipe; 1204. Solenoid valve two. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0041] Embodiment 1, the present invention provides as Figures 1 to 10The all-vanadium liquid flow battery storage device shown comprises a liquid storage tank 1; a sealing plate 2, which is sealingly slidably arranged in the liquid storage tank 1; the sealing plate 2 divides the liquid storage tank 1 into chamber 1 3 and chamber 2 4; an upper pipeline 5, one end of which is connected to the top of chamber 1 3, and the other end is connected to the top of chamber 2 4; a lower pipeline 6, one end of which is connected to one side of the bottom of chamber 1 3, and the other end is connected to one side of the bottom of chamber 2 4; the middle parts of the upper pipeline 5 and the lower pipeline 6 are respectively connected with a liquid inlet pipe 8 and a liquid outlet pipe 9, the liquid inlet pipe 8 is connected to the top of the battery stack, and the liquid outlet pipe 9 is connected to the bottom of the battery stack, the battery stack is the prior art and will not be described here, and a circulating pump is also arranged in the middle of the liquid outlet pipe 9, which is not shown in the figure and is used to transport the electrolyte in the liquid storage tank 1 to the battery stack for reaction; chamber 1 3 and chamber two 4 are respectively provided with multiple groups of blocks, which block the sealing plate 2 to prevent the sealing plate 2 from moving to contact the inner wall of the corresponding chamber. A collision sensor is also provided in the block. When the block collides, it transmits a signal to the controller, indicating that the liquid level in the chamber is lower than a preset value, which can be five percent, so as to facilitate the understanding of the amount of electrolyte in each chamber; it also includes: valve one 13, which is arranged at one end of the upper pipeline 5 close to chamber one 3; valve two 14, which is arranged at one end of the upper pipeline 5 close to chamber two 4; valve three 15, which is arranged at one end of the lower pipeline 6 close to chamber one 3; valve four 16, which is arranged at one end of the lower pipeline 6 close to chamber two 4, and is used to adjust the electrolyte flow to the specified chamber by controlling the valve.

[0042] In summary, before charging or discharging, the electrolyte is first stored in chamber 1 3. At this time, the sealing plate 2 moves into chamber 2 4 and collides with the blocking block. At this time, there is 5% electrolyte remaining in chamber 1 3. After the collision, the blocking block transmits the signal to the controller through the internal collision sensor. The controller controls valve 2 14 and valve 3 15 to open, valve 1 13 and valve 4 16 to close, and under the action of the circulating pump, the electrolyte in chamber 1 3 flows into the battery stack through the lower pipeline 6 and the liquid outlet pipe 9. After the battery stack reaction, the electrolyte flows into chamber 2 4 through the liquid inlet pipe 8 and the upper pipeline 5. During the flow of the electrolyte in chamber 2 4, the sealing plate 2 is pushed to move into chamber 1 3.

[0043] When the sealing plate 2 moves into the chamber 1 3 and collides with the resistance block in the chamber 1 3, the collision sensor transmits a signal to the controller, and the controller controls the valve 1 13 and the valve 4 16 to open, and the valve 2 14 and the valve 3 15 to close. Under the action of the circulation pump, the electrolyte in the chamber 2 4 flows into the battery stack through the lower pipeline 6 and the liquid outlet pipe 9. After the battery stack reaction, the electrolyte flows into the chamber 1 3 through the liquid inlet pipe 8 and the upper pipeline 5. During the flow of the electrolyte in the chamber 1 3, the sealing plate 2 is pushed to move into the chamber 2 4. The above operation is repeated until the charging or discharging of the all-vanadium liquid flow battery is completed.

[0044] It should be noted that a plurality of liquid storage tanks 1 may be provided to store the positive electrode electrolyte and the negative electrode electrolyte respectively.

[0045] By setting a sealing plate 2 to divide the liquid storage tank 1 into chamber 1 3 and chamber 2 4, the electrolyte flowing into the chamber after the stack reaction and mixing with the unreacted electrolyte is reduced, thereby improving the utilization rate of the electrolyte; at the same time, the space in the liquid storage tank 1 is fully utilized, avoiding an increase in the number of liquid storage tanks 1.

[0046] Example 2. Based on the above example, the electrolyte flows into the fuel cell stack under the action of a circulation pump, and then flows into the liquid storage tank 1 after the fuel cell stack reaction. However, the flow generated by the circulation pump alone is insufficient to completely mix the electrolyte in the larger liquid storage tank 1, resulting in the electrolyte in chamber 1 3 and chamber 2 4 being easily deposited over a long period of time. For this reason, the following improvements have been made.

[0047] like Figures 1 to 10 As shown, it includes a spoiler 10, which is arranged in multiple groups and is arranged in the middle of both sides of the liquid storage tank 1. The multiple groups of spoilers 10 are symmetrically arranged, and the multiple groups of spoilers 10 correspond to chamber 1 3 and chamber 2 4, and are used to achieve spoiler flow for the electrolyte in the corresponding chamber to prevent the electrolyte from being deposited in the liquid storage tank 1; each spoiler 10 includes: a spoiler box 1001, which is fixedly arranged in the middle of one side of the liquid storage tank 1 and extends into the liquid storage tank 1; a push plate 1002, which is sealingly slidably arranged in the spoiler box 1001, and the push plate 1002 divides the spoiler box 1001 into two parts, that is, the first chamber is close to the liquid storage tank 1, and the second chamber is far away from the liquid storage tank 1; an electric telescopic member 1003, whose fixed end is fixedly arranged on the side of the spoiler box 1001 away from the liquid storage tank 1, and its protruding end passes through the spoiler box 1001 and is fixedly arranged with one end of the push plate 1002, and the electric telescopic member 1003 is connected to the control system Electrical connection, the protruding end of the electric telescopic member 1003 is coated with an anti-corrosion material; the injection holes 1004 are arranged in multiple groups and are opened at one end of the spoiler box 1001 close to the liquid storage tank 1, and the injection holes 1004 are arranged obliquely and face the sealing plate 2; the injection heads 1005 are arranged in multiple groups and are respectively fixedly arranged on the upper inner wall and the lower inner wall of the liquid storage tank 1. They are arranged in a semicircular arc structure, which can spray electrolyte over a large area, and the area where the electrolyte in the chamber is impacted is larger, thereby improving the utilization rate of the electrolyte; the liquid pipeline 1006 is arranged in multiple groups, one group of liquid pipelines 1006 is located at the top of the spoiler box 1001, and the other group of liquid pipelines 1006 is located at the bottom of the spoiler box 1001, and one end of the multiple groups of liquid pipelines 1006 are all connected to the corresponding injection heads 1005, and the other ends thereof are all connected to the end of the spoiler box 1001 away from the liquid storage tank 1.

[0048] The filter part 11 is arranged in multiple groups and is arranged in the top of both sides of the liquid storage tank 1. The multiple groups of filter parts 11 are symmetrically arranged. The multiple groups of filter parts 11 correspond to chamber one 3 and chamber two 4. Through the movement of the multiple groups of spoilers 10, the filter part 11 is triggered to move to the bottom of the liquid inlet of the upper pipeline 5 to filter the impurities in the electrolyte after the reaction; the negative pressure box 1110 is fixedly arranged on the top of the spoiler box 1001, and the negative pressure box 1110 is connected to the spoiler box 1001; the T-plate 1111 is sealingly slidably arranged in the negative pressure box 1110, and its bottom extends into the spoiler box 1001. The middle part of the T-plate 1111 is provided with a makeshift groove to avoid affecting the normal operation of the electric telescopic part 1003; the wedge-shaped hole 1112 is arranged in multiple groups and is opened at One end of the T-plate 1111; a wedge block 1113, which is provided with multiple groups and is fixedly arranged at one end of the push plate 1002, and the T-plate 1111 can be driven to move by the cooperation of the wedge block 1113 and the wedge hole 1112; and the wedge block 1113 corresponds to the wedge hole 1112; a limiting hole 1114, which is provided with multiple groups and is opened at the end of the spoiler box 1001 away from the liquid storage tank 1, and the limiting hole 1114 corresponds to the wedge hole 1112; a limiting column 1115, which is provided with multiple groups and is slidably sealed in the limiting hole 1114, and can slide along the limiting hole 1114 into the spoiler box 1001, and be inserted into the wedge hole 1112 to limit the T-plate 1111, and when the limiting column 1115 is inserted into the wedge hole 1112, there is A certain resistance is generated, and the limiting column 1115 will not be separated from the wedge-shaped hole 1112 by the squeezing of the electrolyte by the push plate 1002; when limiting the T-plate 1111, it is necessary to partially insert the wedge-shaped block 1113 into the wedge-shaped hole 1112 under the action of the electric telescopic member 1003 and the push plate 1002, and then push the limiting column 1115 along the limiting hole 1114 to the wedge-shaped hole 1112, so as to complete the limiting of the T-plate 1111; the rectangular hole 1116 is opened in one side of the top of the liquid storage tank 1; the filter screen 1117 is fixedly arranged at one end of the bottom of the rectangular hole 1116 and is located in the liquid storage tank 1; the collecting box 1118 is fixedly arranged at one end of the top of the liquid storage tank 1, and the collecting box 1118 is connected to the collecting box 1118 through the rectangular hole 1116. The liquid storage tank 1 is connected, and a filter plate is provided below the collecting box 1118, and the filter plate is lower than the bottom of the rectangular hole 1116. The filter plate is used to separate impurities and electrolyte, and the separated electrolyte flows to the bottom of the filter plate, that is, the bottom of the collecting box 1118, and a liquid level detector is provided at the bottom to detect the liquid level of the electrolyte; the gas storage column 1119 is provided in two groups and fixedly provided at one end of the collecting box 1118 away from the liquid storage tank 1, and the gas storage column 1119 is connected to the collecting box 1118; the U-shaped tube 1120, one end of which is connected to one group of gas storage columns 1119, and the other end is connected to the other group of gas storage columns 1119; the connecting tube 1121, the top of which is connected to the middle of the U-shaped tube 1120, and the bottom of which is connected to the top of the negative pressure box 1110;Push columns 1122, which are set in two groups and slide sealedly in the corresponding gas storage columns 1119, and one end of the push column 1122 is located in the collection box 1118; springs 1123, which are set in two groups and are arranged between the corresponding gas storage columns 1119 and the push columns 1122, one end of the spring 1123 is connected to the inner side wall of the gas storage column 1119, and the other end is connected to one end of the push column 1122; fixing plate 1124, which is fixedly arranged at one end of the two groups of push columns 1122, and the push plate 1002 is located in the collection box 1118; fixing columns 1125, which are set in multiple groups and are fixedly arranged at the end of the fixing plate 1124 away from the push column 1122; filter screen two 1126, which is fixedly arranged at one end of the multiple groups of fixing columns 1125; L-shaped plate 1127, which is fixedly arranged at one end of the top of the filter screen two 1126; in the initial state, the L-shaped plate 1127 seals the rectangular hole 1116 to prevent the electrolyte from flowing into the collection box 1118. When the push column 1122 is pushed by the gas in the gas storage column 1119, it drives the fixing plate 1124, the fixing column 1125, the filter screen two 1126 and the L-shaped plate 1127 to move, so that the fixing plate 1124, the fixing column 1125 and the filter screen two 1126 move above the filter screen one 1117 and form a "U" - shaped structure with the filter screen one 1117 to facilitate the filtration of the impurities after the reaction. At this time, the fixing plate 1124 seals the rectangular hole 1116.

[0049] Drain pipe 1128, whose top is communicated with the bottom of the collection box 1118 and whose bottom is communicated with the top of the negative pressure box 1110. Solenoid valve one 1129, which is arranged in the middle of the drain pipe 1128, and the solenoid valve one 1129 is electrically connected to the control system; under the action of the push plate 1002 and the second chamber, the electrolyte collected at the bottom of the collection box 1118 is pumped into the second chamber through the drain pipe 1128.

[0050] Cleaning parts 12, which are set in multiple groups and are arranged inside the two top sides of the liquid storage tank 1. The multiple groups of cleaning parts 12 are symmetrically arranged. The multiple groups of filtering parts 11 correspond to the chamber one 3 and the chamber two 4. The multiple groups of cleaning parts 12 clean the filtering parts 11 under the action of the flow disturbing part 10; water storage cavity 1201, which is opened at the top of the liquid storage tank 1 and is located below the rectangular hole 1116; spray holes 1202, which are set in multiple groups and are arranged at the bottom of the rectangular hole 1116 and are communicated with the water storage cavity 1201. The spray holes 1202 are set obliquely and face the direction of the gas storage column 1119; fluid pipes 1203, which are fixedly arranged at the bottom of the water storage cavity 1201 and are communicated with the water storage cavity 1201, and the bottoms of the multiple fluid pipes 1203 are communicated with the liquid pipeline 1006 at the top of the flow disturbing box 1001; solenoid valve two 1204, which is fixedly arranged at the bottom of the fluid pipe 1203, and the solenoid valve two 1204 is electrically connected to the control system.

[0051] In summary, during normal charging or discharging, valve one 13 and valve four 16 are first closed, and valve two 14 and valve three 15 are opened. The electrolyte in chamber one 3 is transported to the battery stack through the circulation pump, the lower pipeline 6, and the liquid outlet pipe 9, and enters chamber two 4 through the liquid inlet pipe 8 and the upper pipeline 5 after the battery stack reaction. While the circulation pump extracts the electrolyte in chamber one 3 to the battery stack for reaction, the controller controls the electric telescopic member 1003 to drive the push plate 1002 to move to the first position in the spoiler box 1001 toward the liquid storage tank 1, such as Figure 7 As shown, the push plate 1002 squeezes the electrolyte in the first chamber during movement, and the squeezed electrolyte is ejected from the injection hole 1004, and the ejected electrolyte impacts the electrolyte in the middle of the liquid storage tank 1 to prevent the electrolyte from being deposited; while squeezing the electrolyte in the first chamber, the push plate 1002 generates negative pressure in the second chamber, and draws part of the electrolyte in the top and bottom of the chamber 3 into the second chamber through the liquid pipeline 1006 and the injection head 1005.

[0052] When the push plate 1002 moves from the first position to the initial position in a direction away from the liquid storage tank 1 under the action of the electric telescopic member 1003, as shown in FIG. Figure 6 As shown, the push plate 1002 squeezes the electrolyte in the second chamber during movement, and the squeezed electrolyte flows from the corresponding liquid pipeline 1006 to the corresponding injection head 1005. Since the injection head 1005 is respectively arranged on the top and bottom of the inner wall of the liquid storage tank 1, the ejected electrolyte impacts the corresponding position in the chamber 3 at this time, thereby preventing the electrolyte from being deposited; at the same time, the electrolyte flowing into the chamber 2 4 also repeats the above operation, and the electric telescopic member 1003 controls the push plate 1002 to move from the initial position to the first position, and then from the first position to the initial position, reciprocatingly drawing in and ejecting the electrolyte into and out of the first chamber and the second chamber, so that the ejected electrolyte impacts the electrolyte in the chamber 3, thereby preventing the electrolyte from being deposited; it should be noted that the two groups of spoilers 10 work simultaneously.

[0053] When the electrolyte level in chamber 1 3 is lower than the preset value, valve 1 13 and valve 4 16 are opened, valve 2 14 and valve 3 15 are closed, and the electrolyte in chamber 2 4 is transported to the battery stack through the circulation pump, lower pipeline 6 and liquid outlet pipe 9, and after the battery stack reaction, it enters chamber 1 3 through liquid inlet pipe 8 and upper pipeline 5, and then the above operation is repeated.

[0054] Then the above operation is repeated to disturb the flow of the electrolyte in the chamber 1 3 and the chamber 2 4 to prevent the electrolyte from being deposited, thereby improving the utilization rate of the electrolyte.

[0055] When impurities generated after the electrolyte passes through the stack reaction flow into chamber 1003, the electric telescopic member 1003 drives the push plate 1002 to move away from the liquid storage tank 1 to the first position, as Figure 8 shown. The push plate 1002 drives the wedge block 1113 into the wedge hole 1112 and pushes the limit post 1115 in the wedge hole 1112, so that the limit post 1115 moves along the limit hole 1114 and disengages from the wedge hole 1112. At this time, the wedge block 1113 is inserted into the wedge hole 1112 and temporarily limits the T-shaped plate 1111 instead of the limit post 1115; when the electric telescopic member 1003 drives the push plate 1002 and the wedge block 1113 to move towards the liquid storage tank 1 to the initial position, the wedge block 1113 disengages from the wedge hole 1112. At this time, the T-shaped plate 1111 is released from the limit, and the compressed spring 1123 is no longer affected by the negative pressure suction in the negative pressure tank 1110, the connecting pipe 1121, the U-shaped pipe 1120 and the air storage column 1119, and starts to drive the push post 1122 to reset, and pushes the push post 1122 to move along the air storage column 1119 towards the liquid storage tank 1. During the movement, the push post 1122 drives the fixing plate 1124 and the second filter screen 1126 above the first filter screen 1117 and combines with the first filter screen 1117 to form a "U" - shaped structure. At this time, the spring 1123 completes the reset of the push post 1122. The electrolyte after the stack reaction flows into chamber 1003 through the liquid inlet pipe 8 and the upper pipeline 5, and is filtered for impurities in the reacted electrolyte through the "U" - shaped structure formed by the fixing plate 1124, the first filter screen 1117 and the second filter screen 1126, thereby improving the performance of the all - vanadium redox flow battery.

[0056] While spraying the electrolyte into chamber 1003 through the spray head 1005, the electrolyte sprayed by the spray head 1005 at the top of chamber 1003 enters the "U" - shaped structure formed by the fixing plate 1124, the second filter screen 1126 and the first filter screen 1117 through the filter holes in the first filter screen 1117, making the inside of it flow briefly under the impact of the electrolyte, avoiding impurities inside it from adhering to the filter holes on the first filter screen 1117 and the second filter screen 1126 and affecting the discharge of the electrolyte, thereby improving the filtering effect of the electrolyte.

[0057] While the push post 1122 moves along the air storage column 1119 towards the liquid storage tank 1, the negative pressure generated during the movement of the push post 1122 passes through the U - shaped pipe 1120 and the connecting pipe 1121 to the negative pressure tank 1110, and drives the T - shaped plate 1111 in the negative pressure tank 1110 to move upwards, as Fig.10 shown.

[0058] When there is too much impurity in the "U"-shaped structure formed by the fixed plate 1124, the first filter net 1117 and the second filter net 1126, when the electric telescopic part 1003 is controlled to drive the push plate 1002 to move away from the liquid storage tank 1 to the first position, the push plate 1002 drives the wedge-shaped block 1113 to move into the wedge-shaped hole 1112, and drives the T-shaped plate 1111 to move downward along the negative pressure tank 1110 through the wedge-shaped hole 1112, and generates negative pressure in the negative pressure tank 1110. The generated negative pressure drives the push column 1122, the fixed plate 1124 and the second filter net 1126 to move away from the liquid storage tank 1 until the initial state through the connecting pipe 1121, the U-shaped pipe 1120 and the air storage column 1119, as Figure 6 shown. At this time, the spring 1123 is compressed by the push column 1122, and the second filter net 1126 pushes the impurities above the first filter net 1117 into the collection box 1118 during the movement, and the filter plate separates the impurities and the electrolyte.

[0059] When the second filter net 1126 pushes the impurities to the collection box 1118, there are still some impurities remaining on the second filter net 1126. When the electric telescopic part 1003 drives the push plate 1002 and the wedge-shaped block 1113 to move away from the liquid storage tank 1 to the second position, as Fig. 9 shown, the wedge-shaped block 1113 continues to move along the wedge-shaped hole 1112. At this time, the solenoid valve two 1204 on the fluid pipe 1203 has been opened. While the electrolyte squeezed by the push plate 1002 enters the spray head 1005, a part of the electrolyte enters the water storage cavity 1201 through the fluid pipe 1203, and the electrolyte sprayed out through the inclined spray holes 1202 cleans the second filter net 1126, thereby improving the filtering effect of the electrolyte; after cleaning the second filter net 1126, just close the solenoid valve two 1204.

[0060] When the liquid level detector detects that the electrolyte at the bottom of the collection box 1118 exceeds the preset value, open the solenoid valve one 1129 on the drain pipe 1128, and the controller controls the electric telescopic part 1003 to drive the push plate 1002 to move towards the liquid storage tank 1 to the first position, as Figure 7 shown. During the movement of the push plate 1002, negative pressure is generated in the second chamber, and the electrolyte at the bottom of the collection box 1118 is pumped into the second chamber in the turbulence box 1001 through the drain pipe 1128; when the electrolyte at the bottom of the collection box 1118 is cleaned up, the controller controls the solenoid valve one 1129 on the drain pipe 1128 to close.

[0061] Through the cooperation of the electric telescopic member 1003, the push plate 1002 and the spoiler box 1001, the controller controls the electric telescopic member 1003 to drive the push plate 1002 to move to the first position in the direction of the liquid storage tank 1. When the push plate 1002 moves, the electrolyte in the first chamber is pushed by the electrolyte sprayed from the injection hole 1004 to impact the electrolyte in the middle of the chamber 3 to prevent electrolyte deposition; at the same time, during the movement of the push plate 1002 in the direction of the liquid storage tank 1, a negative pressure is generated in the second chamber, and the electrolyte is sucked into the second chamber through the liquid pipeline 1006 and the injection head 1005. When the electric telescopic member 1003 drives the push plate 1002 to move away from the liquid storage tank 1 to the initial position, the push plate 1002 pushes the electrolyte in the second chamber to be sprayed to the top and bottom of the chamber 3 through the liquid pipeline 1006 and the injection head 1005 to cause it to impact, thereby preventing electrolyte deposition, thereby improving the utilization rate of the electrolyte.

[0062] By setting up the filter part 11, when the electrolyte after the stack reaction contains impurities, the electric telescopic part 1003 and the push plate 1002 cooperate to release the limit of the T-plate 1111 by the limit column 1115, so that the filter part 11 moves to the inlet of the liquid inlet pipe 8, and the electrolyte after the reaction is filtered, thereby preventing impurities from clogging the pipeline and improving the performance of the all-vanadium liquid flow battery.

[0063] By setting up the cleaning part 12, the push plate 1002 moves away from the liquid storage tank 1 under the action of the electric telescopic part 1003, and squeezes the electrolyte in the second chamber, so that the electrolyte flows into the water storage chamber 1201 through the fluid tube 1203, and the sprayed electrolyte cleans the filter screen 1126 through the spray hole 1202, thereby improving the filtering effect of the electrolyte.

[0064] By respectively setting liquid inlets at the ends of the spoiler box 1001 that are away from each other, and setting a one-way valve on the liquid inlet, the one-way valve can only allow liquid to enter the spoiler box 1001; when it is necessary to clean the chamber 1003, an external cleaning pump is connected to the liquid inlet on the spoiler box 1001, and then the push plate 1002 is driven by the electric telescopic member 1003 to move toward the liquid storage tank 1 to the first position, such as Figure 7 As shown, the solenoid valve 1129 on the drain pipe 1128 and the solenoid valve 2 1204 on the fluid pipe 1203 are opened, and cleaning liquid is injected into the spoiler box 1001 through the cleaning pump, so that the cleaning liquid in the spoiler box 1001 enters the collection box 1118 and the chamber 13 respectively through the liquid pipeline 1006, the fluid pipe 1203 and the drain pipe 1128 to clean the inside, and the cleaned liquid is discharged through the bottom flow holes set at the bottom of the collection box 1118 and the chamber 13; the operation in the chamber 2 4 is also repeated.

[0065] Embodiment 3, the present invention also provides a method for using the all-vanadium liquid flow battery storage device, comprising the following steps:

[0066] Step 1: Storage: All the electrolyte is stored in chamber 1 3, so that the sealing plate 2 is in contact with the block in chamber 2 4;

[0067] Step 2: Pumping liquid from chamber 1 3, pumping the electrolyte in chamber 1 3 into the stack for reaction through the circulation pump, the lower pipeline 6 and the liquid outlet pipe 9. At this time, control valve 3 15 and valve 2 14 to be opened, and valve 1 13 and valve 4 16 to be closed. After the stack reaction, the electrolyte enters chamber 2 4 through the liquid inlet pipe 8 and the upper pipeline 5, and pushes the sealing plate 2 to move into chamber 1 3 until the sealing plate 2 moves into chamber 1 3 and contacts the blocking block.

[0068] Step 3, draw liquid from chamber 2 4. When the electrolyte level in chamber 1 3 is lower than the preset value, the controller controls valve 3 15 and valve 2 14 to close, valve 1 13 and valve 4 16 to open, and the electrolyte in chamber 2 4 is drawn into the battery stack through the circulation pump, lower pipeline 6 and liquid outlet pipe 9 for reaction. The reacted electrolyte enters chamber 1 3 through liquid inlet pipe 8 and upper pipeline 5, and pushes sealing plate 2 to move into chamber 2 4 until sealing plate 2 moves into chamber 2 4 and contacts with the block. At this time, 5% of the electrolyte remains. Repeat steps 2 to 3 until the charging or discharging of the all-vanadium liquid flow battery is completed.

[0069] Step 4: Liquid turbulence: the electrolytes in step 3 and step 4 are impacted back and forth by the turbulence part 10 to prevent the electrolytes from being deposited;

[0070] Step 5: filtering, filtering the electrolyte reacted in step 3 and step 4 through the filtering unit 11;

[0071] Step six: cleaning: cleaning the filter screen 2 1126 in the filter unit 11 through the cleaning unit 12 .

[0072] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A vanadium redox flow battery storage device, comprising a liquid storage tank (1), characterized in that: Also includes: A sealing plate (2) is sealingly slidably disposed in the liquid storage box (1), and the sealing plate (2) divides the liquid storage box (1) into chamber one (3) and chamber two (4); an upper pipeline (5) is connected at one end to the top of chamber one (3) and at the other end to the top of chamber two (4); a lower pipeline (6) is connected at one end to one side of the bottom of chamber one (3) and at the other end to one side of the bottom of chamber two (4); the middle parts of the upper pipeline (5) and the lower pipeline (6) are respectively connected to a liquid inlet pipe (8) and a liquid outlet pipe (9); and chamber one (3) and chamber two (4) are respectively provided with a plurality of blocks; The spoiler (10) is provided in a plurality of groups and is arranged in the middle of both sides of the liquid storage box (1), the plurality of groups of spoilers (10) are symmetrically arranged, and the plurality of groups of spoilers (10) correspond to the first chamber (3) and the second chamber (4), and are used to achieve spoiler for the electrolyte in the corresponding chamber; The filter parts (11) are arranged in a plurality of groups and are arranged in the top of both sides of the liquid storage tank (1). The plurality of groups of filter parts (11) are arranged symmetrically. The plurality of groups of filter parts (11) correspond to the chamber 1 (3) and the chamber 2 (4). The movement of the plurality of groups of flow-disturbing parts (10) triggers the filter parts (11) to move below the liquid inlet of the upper pipeline (5); The cleaning parts (12) are arranged in a plurality of groups and are arranged in the tops of both sides of the liquid storage tank (1). The plurality of groups of cleaning parts (12) are symmetrically arranged. The plurality of groups of the filtering parts (11) correspond to the chamber one (3) and the chamber two (4). The plurality of groups of the cleaning parts (12) clean the filtering parts (11) under the action of the spoiler (10).

2. The all-vanadium redox flow battery storage device according to claim 1, characterized in that: Each of the spoilers (10) comprises: A spoiler box (1001) is fixedly arranged in the middle of one side of the liquid storage tank (1) and extends into the liquid storage tank (1); A push plate (1002) is sealingly and slidably disposed in the spoiler box (1001); An electric telescopic member (1003), the fixed end of which is fixedly arranged on a side of the spoiler box (1001) away from the liquid storage tank (1), and the extended end of which penetrates the spoiler box (1001) and is fixedly arranged on one end of the push plate (1002); Spray holes (1004) are arranged in a plurality of groups and are opened at one end of the spoiler box (1001) close to the liquid storage tank (1); The spray heads (1005) are arranged in a plurality of groups and are respectively fixedly arranged on the upper side wall and the lower side wall of the liquid storage tank (1); The liquid pipelines (1006) are arranged in a plurality of groups, wherein one group of liquid pipelines (1006) is located at the top of the spoiler box (1001), and another group of liquid pipelines (1006) is located at the bottom of the spoiler box (1001), and one end of the plurality of groups of liquid pipelines (1006) are all connected to the corresponding injection heads (1005), and the other ends thereof are all connected to an end of the spoiler box (1001) away from the liquid storage tank (1).

3. The all-vanadium liquid flow battery storage device according to claim 2, characterized in that: Each of the filter parts (11) comprises: A negative pressure box (1110) is fixedly arranged on the top of the spoiler box (1001), and the negative pressure box (1110) is communicated with the spoiler box (1001); A T-shaped plate (1111) is sealingly and slidably disposed in the negative pressure box (1110), and its bottom extends into the spoiler box (1001); A plurality of wedge-shaped holes (1112) are provided and opened at one end of the T-shaped plate (1111); A wedge block (1113), which is provided in multiple groups and is fixedly arranged at one end of the push plate (1002); The limiting holes (1114) are provided in multiple groups and are opened at one end of the spoiler box (1001) away from the liquid storage box (1); The limiting posts (1115) are arranged in a plurality of groups and are slidably sealed in the limiting holes (1114), and are capable of moving along the limiting holes (1114) into the spoiler box (1001).

4. The all-vanadium liquid flow battery storage device according to claim 3, characterized in that: Each of the filter parts (11) further comprises: A rectangular hole (1116) is provided in one side of the top of the liquid storage tank (1); A filter screen 1 (1117), which is fixedly arranged at one end of the bottom of the rectangular hole (1116) and is located in the liquid storage tank (1); The collecting box (1118) is fixedly arranged at one end of the top of the liquid storage box (1), and the collecting box (1118) is connected to the liquid storage box (1) through the rectangular hole (1116).

5. The all-vanadium liquid flow battery storage device according to claim 4, characterized in that: Each of the filter parts (11) further comprises: An air storage column (1119) is provided in two groups and is fixedly arranged at one end of the collection box (1118) away from the liquid storage box (1), and the air storage column (1119) is in communication with the collection box (1118); A U-shaped tube (1120), one end of which is connected to one group of gas storage columns (1119), and the other end of which is connected to another group of gas storage columns (1119); The top of the connecting pipe (1121) is connected to the middle of the U-shaped pipe (1120), and the bottom of the connecting pipe (1121) is connected to the top of the negative pressure box (1110).

6. The all-vanadium redox flow battery storage device according to claim 5, characterized in that: Each of the filter parts (11) further comprises: Push pins (1122), which are arranged in two groups and slide in a sealed manner in corresponding gas storage pins (1119); Springs (1123) are provided in two groups and are provided between corresponding gas storage columns (1119) and push columns (1122); A fixing plate (1124) fixedly disposed on one end of the two groups of push pins (1122); The fixed posts (1125) are arranged in a plurality of groups and are fixedly arranged at one end of the fixed plate (1124) away from the push posts (1122); A second filter screen (1126) is fixedly mounted on one end of the plurality of sets of fixing posts (1125); The L-shaped plate (1127) is fixedly arranged at one end of the top of the second filter screen (1126).

7. The all-vanadium redox flow battery storage device according to claim 6, characterized in that: Each of the filter parts (11) further comprises: A liquid discharge pipe (1128), the top of which is in communication with the bottom of the collection box (1118), and the bottom of which is in communication with the top of the negative pressure box (1110); Solenoid valve 1 (1129) is arranged in the middle of the discharge pipe (1128).

8. The all-vanadium redox flow battery storage device according to claim 7, characterized in that: Each of the cleaning parts (12) comprises: A water storage chamber (1201) is provided at the top of the liquid storage tank (1) and is located below the rectangular hole (1116); Spray holes (1202), which are arranged in multiple groups and are disposed at the bottom of the rectangular hole (1116) and are connected to the water storage chamber (1201); A fluid pipe (1203) is fixedly disposed at the bottom of the water storage chamber (1201) and is in communication with the water storage chamber (1201), and the bottom of the fluid pipe (1203) is in communication with a liquid pipeline (1006) located at the top of the spoiler box (1001); Solenoid valve 2 (1204) is fixedly disposed at the bottom of the fluid pipe (1203).

9. The all-vanadium redox flow battery storage device according to claim 8, characterized in that: Also includes: Valve 1 (13), which is arranged at one end of the upper pipeline (5) close to chamber 1 (3); Valve 2 (14), which is arranged at one end of the upper pipeline (5) close to chamber 2 (4); Valve three (15), which is arranged at one end of the lower pipeline (6) close to chamber one (3); Valve four (16) is arranged at one end of the lower pipeline (6) close to chamber two (4).

10. A method for using an all-vanadium redox flow battery storage device, applied to the all-vanadium redox flow battery storage device according to claim 9, characterized in that: The following steps are involved: Step 1: storing the electrolyte, storing all the electrolyte in chamber 1 (3), so that the sealing plate (2) is in contact with the block in chamber 2 (4); Step 2: extract liquid from chamber one (3), and pump the electrolyte in chamber one (3) into the battery stack for reaction through the circulation pump, the lower pipeline (6) and the liquid outlet pipe (9). At this time, control valve three (15) and valve two (14) to open, and valve one (13) and valve four (16) to close. After the battery stack reaction, the electrolyte enters chamber two (4) through the liquid inlet pipe (8) and the upper pipeline (5), and pushes the sealing plate (2) to move into chamber one (3) until the sealing plate (2) moves into chamber one (3) and contacts the blocking block; Step 3, draw liquid from chamber 2 (4). When the electrolyte level in chamber 1 (3) is lower than a preset value, the controller controls valve 3 (15) and valve 2 (14) to close, valve 1 (13) and valve 4 (16) to open, and the electrolyte in chamber 2 (4) is drawn into the battery stack through the circulation pump, the lower pipeline (6) and the liquid outlet pipe (9) for reaction. The electrolyte after the reaction enters chamber 1 (3) through the liquid inlet pipe (8) and the upper pipeline (5), and pushes the sealing plate (2) to move into chamber 2 (4) until the sealing plate (2) moves into chamber 2 (4) and contacts the block. At this time, 5% of the electrolyte remains. Repeat steps 2 to 3 until the charging or discharging of the all-vanadium liquid flow battery is completed. Step 4: liquid disturbance, the electrolytes of step 3 and step 4 are impacted back and forth by the disturbance part (10) to prevent the electrolytes from being deposited; Step 5: filtering, filtering the electrolyte reacted in step 3 and step 4 through the filtering unit (11); Step six: cleaning: cleaning the filter screen 2 (1126) in the filter section (11) through the cleaning section (12).

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