A water purification vehicle

Abstract

This application relates to a water purification vehicle, in which a flocculation tank is installed between the raw water tank and the multi-media filter of the water purification system. The flocculation tank is equipped with: a central shaft cylinder; multiple filter discs spaced axially along the central shaft cylinder, with their central parts spherically hinged to the central shaft cylinder, and a pre-reserved flipping gap between the outer edge of the filter disc and the inner wall of the flocculation tank; a flexible connector, arranged in a ring, with the inner ring fixed to the filter disc and the outer ring fixed to the inner wall of the flocculation tank, the filter disc and the flexible connector separating the cavity inside the flocculation tank into multiple treatment layers; a counterweight, eccentrically mounted on the filter disc to enable multi-directional oscillation of the filter disc during the movement of the water purification vehicle; and a dosing device for quantitatively adding chemicals to the multiple treatment layers through the central shaft cylinder. This application can form a stratified, gradient flocculation treatment of raw water, effectively control the flocculation process, and the oscillating and stirring effect of the filter discs is achieved by the disturbance of the raw water during the movement of the water purification vehicle, requiring no external energy and reducing energy consumption.

Description

Technical Field

[0001] This application relates to the technical field of wastewater purification and treatment, and in particular to a water purification vehicle. Background Technology

[0002] A water purification truck is an integrated, modular mobile water treatment device. Its core function is to transform complex water sources such as surface water, groundwater, and brackish water into clean water that meets domestic or drinking water standards through multi-stage treatment processes. It typically consists of a truck chassis and a container housed in the container. The water purification system usually includes a raw water tank, a raw water pump, a multi-media filter, an activated carbon filter, a softener, a security filter, a high-pressure pump, a reverse osmosis membrane module, an ultraviolet sterilizer, and a pure water tank.

[0003] The system comprises several components: a multi-media filter that uses stratified filtration of quartz sand and coarse sand to remove suspended solids and colloids, controlling the effluent pollution index; an activated carbon filter to adsorb residual chlorine, organic matter, and odors, improving the taste of the water; a softener that uses ion exchange resin to remove calcium and magnesium ions, preventing scaling on the subsequent reverse osmosis membrane; a security filter that uses a 5μm melt-blown PP cotton filter element to trap residual particles from the pretreatment process, protecting the reverse osmosis membrane; a reverse osmosis membrane module that removes salt and heavy metals from brackish water or seawater desalination using a high-pressure pump and RO membrane; and an ultraviolet sterilizer that further inactivates residual bacteria and viruses, ensuring the effluent meets drinking water standards. Therefore, this water purification system can purify most outdoor water sources into clean water for outdoor emergency, disaster relief, and mobile water supply applications.

[0004] However, for raw water with high turbidity (such as surface water and floodwater), it is necessary to treat the impurities in the water with chemical flocculation before it enters the multi-media filter. This is usually done by adding flocculants or micro-flocculators in a specific ratio to promote impurity aggregation. However, in actual treatment, the larger the volume of raw water, the more difficult it is to accurately control the dosage. Overdosing can lead to loose flocs, which is detrimental to sedimentation. Furthermore, the dosing process requires a stirring device to promote flocculation, which undoubtedly increases the energy consumption of the water purification vehicle and affects its operating range. Summary of the Invention

[0005] To address the issues of inaccurate control and high energy consumption in the flocculation process when treating raw water with high turbidity, this application provides a water purification vehicle.

[0006] The water purification vehicle provided in this application adopts the following technical solution:

[0007] A water purification vehicle includes a vehicle chassis and a container. A water purification system is installed in the container. A flocculation tank is located between the raw water tank and a multi-media filter of the water purification system. The flocculation tank is equipped with:

[0008] A central shaft cylinder, one end of which is closed and extends into the flocculation tank, and the other end is open and located outside the flocculation tank;

[0009] Multiple filter discs are spaced apart along the central shaft cylinder, with their central parts spherically hinged to the central shaft cylinder. A flipping gap is reserved between the outer edge of the filter disc and the inner wall of the flocculation tank.

[0010] The flexible connector is arranged in a ring shape, with the inner ring fixed to the filter disc and the outer ring fixed to the inner wall of the flocculation tank. The filter disc and the flexible connector separate the cavity inside the flocculation tank into multiple processing layers.

[0011] The counterweight is eccentrically mounted on the filter disc to enable the filter disc to swing in multiple directions during the operation of the water purification vehicle.

[0012] A dosing device is used to add reagents quantitatively to multiple treatments in layers through a central shaft cylinder.

[0013] Furthermore, the dosing device includes:

[0014] The dosing tube is rotatably and sealed inside the central shaft cylinder. Multiple dosing holes are formed on its arc-shaped outer peripheral wall, each corresponding to one of the multiple treatment layers. Adjacent dosing holes are arranged at equal angles in the radial direction of the dosing tube. Multiple dispensing holes, each corresponding to one of the multiple treatment layers, are formed through the central shaft cylinder. When the dosing tube rotates, at most one dispensing hole aligns with a dosing hole.

[0015] A rotary joint is installed on the upper end of the pressurization pipe, with its output end connected to the dosing pipe and its input end connected to the delivery pipe.

[0016] A pharmaceutical tank, filled with flocculant and connected to the delivery pipe, is equipped with a metering pump; and

[0017] The drive mechanism is used to rotate the dosing pipe.

[0018] Furthermore, the flocculation tank is equipped with a turbidity meter in the treatment layer, and multiple turbidity meters are electrically connected to a dosing controller. The dosing controller is electrically connected to the drive mechanism and the drug delivery metering pump.

[0019] The dosing controller is configured to control the drive mechanism to operate according to the preset turbidity threshold of each treatment layer so that the dosing tube rotates to align the dosing hole and the outlet hole of the same layer, and controls the dosing metering pump to deliver a set amount of medicine to the treatment layer.

[0020] Furthermore, the preset turbidity thresholds for each of the processing layers decrease sequentially from top to bottom, and the pore diameters of each of the filter discs decrease sequentially from top to bottom.

[0021] Furthermore, the flexible connector is a filter cloth or a filter membrane, and the radial width of the flexible connector is greater than the width of the flip gap.

[0022] Furthermore, a plurality of limiting ropes are fixed between the outer edge of the filter disc and the inner wall of the flocculation tank, and the length of the limiting ropes is less than the radial width of the flexible connector after it is flattened.

[0023] Furthermore, the vertical height of the connection between the inner ring of the flexible connector and the filter disc is greater than the vertical height of the connection between the outer ring of the flexible connector and the inner wall of the flocculation tank when the filter disc is in any flipped state.

[0024] Furthermore, the flocculation tank is externally connected to a drain pipe, which is equipped with a drain valve. The drain pipe corresponds to the side of the filter disc where a counterweight is located.

[0025] Furthermore, a ball head is coaxially fixed to the outer wall of the arc surface of the central shaft cylinder, and a ball sleeve is fitted around the ball head in the horizontal circumferential direction. The filter disc is coaxially fixed to the outer circumferential wall of the arc surface of the ball sleeve.

[0026] Furthermore, the counterweights on different filter discs are projected at different positions on the bottom wall of the flocculation tank.

[0027] In summary, the beneficial technical effects of this application are as follows:

[0028] 1. By dividing the flocculation tank into multiple treatment layers through filter discs and flexible connectors, and by gradually decreasing the pore size of the filter discs from top to bottom, a stratified and gradient flocculation treatment of raw water can be formed. This can greatly reduce the treatment load of each filter disc, prevent premature clogging of the filter discs, and help the suspended solids and colloids in the raw water to coagulate in a gradient. This not only effectively controls the flocculation process, but also reduces the water content in the coagulated flocs and reduces the space occupied by the flocs in the treatment layers, thereby increasing the effluent rate and treatment capacity during the flocculation process, and facilitating the efficient discharge of subsequent flocs.

[0029] 2. The disorderly surging of the raw water in the flocculation tank caused by road bumps or speed changes during the water purification truck's journey can drive the filter disc to swing disorderly on the central shaft. On the one hand, this can ensure the uniformity of mixing between the flocculant added to the raw water and the raw water, promoting the floc formation rate. On the other hand, the swinging filter disc can ensure that there is flowing water on its upper surface, which can prevent the flocculent from completely adhering to the upper surface of the filter disc, thus reducing the flow rate of the initial filtered water through the filter disc and ensuring the filtration effect. Furthermore, this swinging and stirring effect of the filter disc is entirely achieved by the disturbance of the raw water during the water purification truck's journey, without the need for external energy, which can greatly reduce the energy consumption of flocculation treatment in the flocculation tank.

[0030] 3. By installing the counterweights on the upper and lower filter discs at different positions, the swing amplitude and swing duration of the filter discs can be increased to a certain extent, and the main swing direction of the multiple filter discs on the central shaft cylinder will be different, thereby promoting the multi-directional stirring and mixing effect of the raw water in the flocculation tank.

[0031] 4. By staggering the multiple outlet holes on the central shaft and the multiple dosing holes on the dosing pipe, and ensuring that only one outlet hole aligns with the dosing hole when the dosing pipe rotates, independent dosing can be achieved for different treatment layers, and the treatment layers do not interfere with each other, thus achieving more precise control of the dosing amount.

[0032] 5. The pleated design of the flexible connector allows the filter disc to push the condensed flocs into the pleats during its oscillation, reducing the amount of flocs on the filter disc surface. This ensures the water flow rate of the filter disc to a certain extent and greatly reduces the maintenance frequency of the flocculation tank. Furthermore, when the water purification vehicle is stationary or when backwashing of the flocculation tank is required, the filter disc will tilt towards the end with the counterweight under its own weight. At this time, the flocs stored in the pleats of the flexible connector will slide down to the vicinity of the drain pipe under their own weight, which greatly facilitates the discharge of flocs in each treatment layer and makes the maintenance of the flocculation tank more convenient.

[0033] 6. By setting up magnets with opposing magnetic forces on two adjacent filter discs, the filter discs near the water surface and below can be made to swing on the central shaft at different water levels in the flocculation tank, thereby ensuring the mixing and stirring effect of raw water and flocculant. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0035] Figure 2 This is a cross-sectional structural schematic diagram of the flocculation tank according to an embodiment of this application;

[0036] Figure 3 yes Figure 2 A magnified view of part A in the middle;

[0037] Figure 4 yes Figure 1 A magnified view of part B in the middle section;

[0038] Figure 5 yes Figure 2 A magnified view of part C in the diagram.

[0039] Explanation of reference numerals in the attached figures:

[0040] 11. Automobile chassis; 12. Container cabin; 121. Raw water tank; 122. Multi-media filter;

[0041] 2. Flocculation tank; 21. Tilting gap; 22. Processing stratification; 23. Turbidity meter;

[0042] 3. Central shaft cylinder; 31. Discharge hole;

[0043] 4. Filter disc; 41. Counterweight;

[0044] 5. Flexible connectors; 51. Pleats;

[0045] 61. Dosing pipe; 611. Dosing port; 62. Rotary joint; 63. Delivery pipe; 64. Drug tank; 65. Metering pump;

[0046] 71. Sewage pipe; 72. Sewage valve;

[0047] 81. Ball head; 82. Ball cover;

[0048] 91. Gear ring; 92. Gear; 93. Servo motor. Detailed Implementation

[0049] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] This application discloses a water purification vehicle. (Refer to...) Figure 1 , Figure 2 and Figure 3 It includes a car chassis 11 and a container 12. A water purification system is installed in the container 12. A flocculation tank 2 is installed between the raw water tank 121 and the multi-media filter 122 of the water purification system. The volume of the flocculation tank 2 is much smaller than the volume of the raw water tank 121. The remaining modules of the water purification system can be conventional technologies in the field, which will not be described in detail here.

[0051] The flocculation tank 2 is equipped with:

[0052] The central shaft cylinder 3 is closed at one end and extends into the flocculation tank 2, while the other end is open and located outside the flocculation tank 2. The central shaft cylinder 3 is coaxially and fixedly connected to the flocculation tank 2.

[0053] Multiple filter discs 4 are axially spaced on the central shaft cylinder 3. Multiple filter holes are formed through the filter discs 4, or the filter discs 4 are frame structures with filter cloth or filter membrane attached to their upper end face. In this embodiment, the filter discs 4 are the latter. The filter discs 4 are spherically hinged to the central shaft cylinder 3 in the middle, and a flipping gap 21 is reserved between the outer edge of the filter discs 4 and the inner wall of the flocculation tank 2. Specifically, a ball head 81 is coaxially fixed to the outer arc surface of the central shaft cylinder 3, and a ball sleeve 82 is fitted around the ball head 81 in a horizontal circumferential direction. The filter discs 4 are coaxially fixed to the outer arc surface of the ball sleeve 82.

[0054] The flexible connector 5 is a filter cloth or filter membrane. It is arranged in a ring shape, with the inner ring fixed to the outer edge of the filter disc 4 and the outer ring fixed to the inner wall of the flocculation tank 2. The filter disc 4 and the flexible connector 5 together separate the cavity inside the flocculation tank 2 into multiple treatment layers 22.

[0055] The counterweight 41 is eccentrically mounted on the filter disc 4, specifically on the lower end frame of the filter disc 4, so that the filter disc 4 can swing in multiple directions by the surge of raw water in the flocculation tank 2 during the operation of the water purification vehicle; and the counterweight 41 on different filter discs 4 has different projection positions on the bottom wall of the flocculation tank 2, so as to achieve the multi-directional swing effect of different filter discs 4.

[0056] The dosing device is used to quantitatively add reagents to multiple treatment layers 22 through the central shaft cylinder 3.

[0057] Therefore, when the water purification truck is performing mobile water supply operations, raw water is first introduced into the raw water tank 121 to keep the raw water in the flocculation tank 2 in a state of not being full. Then the water purification truck is started. During the operation, the water purification truck adds a set amount of flocculant to each treatment zone of the flocculation tank 2 according to the turbidity of the raw water through the dosing device. This causes the suspended solids and colloids dispersed in each treatment layer 22 to aggregate into large flocs. The flocs are filtered by the filter disc 4 of the corresponding layer. The pre-filtered water passes through the filter disc 4 and enters the next treatment layer 22 until the pre-filtered water in the bottom treatment layer 22 reaches the set turbidity requirement. Then the pre-filtered water at the bottom of the flocculation tank 2 is discharged into the subsequent multi-media filter 122.

[0058] As the initial filtered water in the bottom layer of the flocculation tank 2 is discharged, the raw water in the raw water tank 121 continues to flow into the flocculation tank 2 to maintain the raw water in the flocculation tank 2 in a set unfilled state. This allows the raw water in the subsequent raw water tank 121 to pass through multiple treatment layers 22 and undergo multiple flocculation treatments, which can significantly improve the flocculation treatment efficiency and flocculation treatment quality in the flocculation tank 2. Moreover, since the suspended solids and colloids in the raw water are flocculated multiple times to meet the set requirements, the filter disc 4 will not be blocked prematurely, ensuring the flow rate of the initial filtered water on the filter disc 4, so as to ensure the flocculation treatment efficiency of the flocculation tank 2 for the raw water.

[0059] Meanwhile, as the water purification truck moves, the raw water that is not completely filled in the flocculation tank 2 will surge randomly in the flocculation tank 2 due to road bumps or changes in driving speed. The surging water flow will then push the filter disc 4 to swing randomly on the central shaft cylinder 3. On the one hand, this can achieve uniform mixing of the flocculant added to the raw water and the raw water, and promote the floc formation rate. On the other hand, the swinging filter disc 4 can ensure that there is flowing water on its upper surface, which can prevent the flocculent from completely adhering to the upper surface of the filter disc 4, thus reducing the flow rate of the initial filtered water through the filter disc 4 and ensuring the filtration effect. Furthermore, this swinging and stirring effect of the filter disc 4 is entirely achieved by the disturbance of the raw water during the movement of the water purification truck, without the need for external energy, which can greatly reduce the energy consumption of flocculation treatment in the flocculation tank 2.

[0060] The eccentrically mounted counterweight 41 on the filter disc 4 can, to some extent, increase the swing amplitude and prolong the swing time of the filter disc 4, thereby improving the mixing effect of the flocculant and ensuring the flow rate of the pre-filtered water. Furthermore, due to the different installation positions of the counterweight 41 on the upper and lower filter discs 4, the main swing directions of the multiple filter discs 4 on the central shaft cylinder 3 are different, which can further promote the multi-directional stirring and mixing effect of the raw water in the flocculation tank 2.

[0061] When setting up the specific configuration, refer to... Figure 2 , Figure 3 and Figure 4 The dosing device includes:

[0062] The dosing pipe 61 is rotatably and sealed within the central shaft cylinder 3. Multiple dosing holes 611 are formed on its arc-shaped outer peripheral wall. Each dosing hole 611 corresponds to one of the multiple treatment layers 22, and adjacent dosing holes 611 are arranged at equal angles in the radial direction of the dosing pipe 61. In this embodiment, taking four filter discs 4 as an example, four treatment layers 22 can be separated in the flocculation tank 2, with the radial angle between two adjacent dosing holes 611 being 90°. Multiple outlet holes 31, corresponding one-to-one with each of the multiple treatment layers 22, are formed through the central shaft cylinder 3. When the dosing pipe 61 rotates, at most one outlet hole 31 aligns with a dosing hole 611. Furthermore, in specific settings, the diameter of the discharge hole 31 can be larger than the diameter of the dosing hole 611. The dosing hole 611 can be a round hole or a slit hole. Multiple discharge holes 31 on the central shaft cylinder 3 are arranged along the same straight line so that every time the dosing tube 61 rotates 90°, one dosing hole 611 can be aligned with one discharge hole 31 in one treatment layer 22, which is convenient for adjustment.

[0063] Rotary joint 62 is installed on the upper end of the pressurization pipe, with its output end connected to the dosing pipe 61 and its input end connected to the delivery pipe 63.

[0064] The medicine tank 64 is filled with flocculant and connected to the medicine delivery pipe 63, which is equipped with a medicine delivery metering pump 65.

[0065] The drive mechanism is used to drive the dosing tube 61 to rotate. Specifically, it may be a gear ring 91 coaxially fixed to the outer wall of the dosing tube 61, a gear 92 meshing with the gear ring 91, and a servo motor 93 for driving the gear 92 to rotate and can be suspended at any angle.

[0066] Furthermore, the flocculation tank 2 is equipped with a turbidity meter 23 in the treatment layer 22. Multiple turbidity meters 23 are electrically connected to a dosing controller, which is electrically connected to a servo motor 93 and a drug delivery metering pump 65.

[0067] The dosing controller is configured to control the servo motor 93 to operate according to the preset turbidity threshold of each processing layer 22 so that the dosing tube 61 rotates to align the dosing hole 611 and the outlet hole 31 of the same layer, and to control the metering pump 65 to deliver the set amount of agent to the processing layer 22.

[0068] Therefore, the turbidity meters located in each treatment layer 22 detect the turbidity of the raw water in that layer. If the turbidity of the raw water in that layer is higher than the preset turbidity threshold of that layer, the dosing controller controls the servo motor 93 to work and drive the dosing pipe 61 to rotate until the dosing hole 611 corresponding to that layer is aligned with the outlet hole 31 corresponding to that layer. Then, the dosing controller controls the metering pump 65 to deliver a set amount of flocculant into the dosing pipe 61. The flocculant entering the dosing pipe 61 can only be output from the dosing hole 611 and pass through the outlet hole 31 into the treatment layer 22. This allows for independent dosing of different treatment layers 22 without interference between them, achieving a more precise control of the dosing amount. When switching between different treatment layers 22, simply drive the dosing pipe 61 to rotate to the set angle via the servo motor 93, and then start the metering pump 65. The switching method is simple and sensitive. When no flocculant needs to be added, control the servo motor 93 to rotate at any angle between 0° and 90°, such as 45°, so that all dosing holes 611 are misaligned with all dispensing holes 31. This can seal the dosing pipe 61 and prevent flocculant waste or contamination.

[0069] It should also be noted that since the raw water in the flocculation tank 2 is in a flowing state during the treatment process, some of the flocculant remaining in the upper treatment layer 22 will flow with the water flow to the lower treatment layer 22. Therefore, the set dosage for the lower treatment layer 22 should be less than the normal value, and the optimal location for the dosing hole 611 should be close to the upper filter plate 4 to extend the flow path of the added flocculant in a single treatment layer 22 as much as possible.

[0070] In order to achieve efficient stratification treatment in flocculation tank 2, the preset turbidity threshold of each treatment layer 22 decreases from top to bottom, and the pore size of each filter plate 4 decreases from top to bottom.

[0071] Therefore, based on the layered treatment of the raw water in the aforementioned scheme, which involves passing through multiple treatment layers 22 and undergoing multiple flocculation treatments, a layered and gradient treatment is further formed. This can greatly reduce the treatment load of each filter disc 4 and help the suspended solids and colloids in the raw water to coagulate. It can reduce the water content in the coagulated flocs and reduce the space occupancy of the flocs in the treatment layers 22, thereby increasing the effluent rate and treatment capacity in the flocculation treatment process and facilitating the efficient discharge of subsequent flocs.

[0072] In addition, considering that excessive swing amplitude of the filter disc 4 on the central shaft cylinder 3 may cause excessive pulling on the flexible connector 5, which may result in damage to the flexible connector 5 or separation from the filter disc 4 and the central shaft cylinder 3, thus affecting the filtration effect of the filter disc 4 on the flocculated flocs.

[0073] Therefore, referring to Figure 2 and Figure 5 On the one hand, the radial width of the flexible connector 5 is greater than the width of the flip gap 21; on the other hand, a number of limiting ropes (not shown in the figure) are fixed between the outer edge of the filter disc 4 and the inner wall of the flocculation tank 2, which are arranged radially along the flexible connector 5. The length of the limiting rope is less than the radial width of the flexible connector 5 after it is flattened, and the limiting rope is located on the lower end face of the flexible connector 5.

[0074] Therefore, when the filter disc 4 swings on the central shaft cylinder 3, the setting of multiple limiting ropes can limit the maximum flip angle of the filter disc 4 at any angle, avoiding excessive flipping of the filter disc 4 and causing traction on the flexible connector 5; at the same time, the flexible connector 5 can form folds 51 in the flip gap 21, so that the filter disc 4 can push the condensed flocs into the folds 51 of the flexible connector 5 for storage during the swing, reducing the amount of flocs on the surface of the filter disc 4, which can ensure the water flow of the filter disc 4 to a certain extent, and greatly reduce the maintenance frequency of the flocculation tank 2 and extend the single treatment cycle of the flocculation tank 2.

[0075] Furthermore, in another feasible embodiment, referring to Figure 2 and Figure 5 It can also be further configured such that the vertical height of the connection between the inner ring of the flexible connector 5 and the filter disc 4 is greater than the vertical height of the connection between the outer ring of the flexible connector 5 and the inner wall of the flocculation tank 2 when the filter disc 4 is in any flipped state; at the same time, a drain pipe 71 can be connected to the outside of the flocculation tank 2, and a drain valve 72 is provided on the drain pipe 71, and the drain pipe 71 corresponds to the side of the filter disc 4 where the counterweight 41 is provided.

[0076] Therefore, in addition to storing flocs, the flexible connector 5 can also tilt towards the end with the counterweight 41 under the action of the counterweight 41 when the water purification vehicle is stationary or when the flocculation tank 2 needs to be backwashed. At this time, the flocs stored in the folds 51 of the flexible connector 5 will slide down to the vicinity of the drain pipe 71 under its own weight, which can greatly facilitate the discharge of flocs in each treatment layer 22, making the maintenance of the flocculation tank 2 more convenient.

[0077] In addition, considering that when the water level in the flocculation tank 2 is high, the filter disc 4 located below is less affected by the disturbance during the operation of the water purification vehicle. In order to ensure that each filter disc 4 can participate in efficient stirring and filtration, in other feasible embodiments, magnetically repulsive magnets can be further fixed on the opposite surfaces of two adjacent filter discs 4. The magnets are set in local circumferential positions of the filter discs 4, and when multiple magnets are set, they cannot be arranged symmetrically or in an equally spaced circular array, so as to prevent the magnetically repulsive magnets from controlling the distance between two adjacent filter discs 4 to be equal everywhere, thereby suppressing the multi-directional oscillating stirring effect of multiple filter discs 4.

[0078] Based on this, in one embodiment, the magnet on the upper end face of the filter disk 4 and the magnet on the lower end face are in the same position; in another embodiment, the magnet on the upper end face of the filter disk 4 and the magnet on the lower end face are staggered; in other embodiments, the two magnets on the two opposite faces of two adjacent filter disks 4 are also staggered, but within the range of mutual influence of their magnetic repulsion forces.

[0079] Therefore, when the raw water at a high level surges in the flocculation tank 2 due to the disturbance of the moving water purification vehicle, the filter disc 4 near the liquid surface is subjected to the strongest disturbance effect. When the filter disc 4 swings under the disturbance of the water flow, the magnetic repulsion of the magnet can drive the lower filter disc 4 to swing to a certain extent. When multiple filter discs 4 swing, it further promotes the surge of raw water in the flocculation tank 2. By analogy, most of the filter discs 4 can swing on the central shaft cylinder 3, thereby ensuring the mixing and stirring effect of raw water and flocculant.

[0080] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0081] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A water purification vehicle, comprising a vehicle chassis and a container, wherein a water purification system is installed in the container, characterized in that, A flocculation tank is installed between the raw water tank and the multi-media filter in the water purification system. The flocculation tank is equipped with: A central shaft cylinder, one end of which is closed and extends into the flocculation tank, and the other end is open and located outside the flocculation tank; Multiple filter discs are spaced apart along the central shaft cylinder, with their central parts spherically hinged to the central shaft cylinder. A flipping gap is reserved between the outer edge of the filter disc and the inner wall of the flocculation tank. The flexible connector is arranged in a ring shape, with the inner ring fixed to the filter disc and the outer ring fixed to the inner wall of the flocculation tank. The filter disc and the flexible connector separate the cavity inside the flocculation tank into multiple processing layers. The counterweight is eccentrically mounted on the filter disc to enable the filter disc to swing in multiple directions during the operation of the water purification vehicle. A dosing device is used to add reagents quantitatively to multiple treatments in layers through a central shaft cylinder; The dosing device includes: The dosing tube is rotatably and sealed inside the central shaft cylinder. Multiple dosing holes are formed on its arc-shaped outer peripheral wall, each corresponding to one of the multiple treatment layers. Adjacent dosing holes are arranged at equal angles in the radial direction of the dosing tube. Multiple dispensing holes, each corresponding to one of the multiple treatment layers, are formed through the central shaft cylinder. When the dosing tube rotates, at most one dispensing hole aligns with a dosing hole. A rotary joint is installed on the upper end of the pressurization pipe, with its output end connected to the dosing pipe and its input end connected to the delivery pipe. A pharmaceutical tank, filled with flocculant and connected to the delivery pipe, is equipped with a metering pump; and The drive mechanism is used to rotate the dosing pipe.

2. A water purification vehicle according to claim 1, characterized in that, The flocculation tank is equipped with a turbidity meter in the treatment layer, and multiple turbidity meters are electrically connected to a dosing controller. The dosing controller is electrically connected to the drive mechanism and the drug delivery metering pump. The dosing controller is configured to control the drive mechanism to operate according to the preset turbidity threshold of each treatment layer so that the dosing tube rotates to align the dosing hole and the outlet hole of the same layer, and controls the dosing metering pump to deliver a set amount of medicine to the treatment layer.

3. A water purification vehicle according to claim 2, characterized in that, The preset turbidity thresholds for each of the processing layers decrease sequentially from top to bottom, and the pore diameters of each of the filter discs decrease sequentially from top to bottom.

4. A water purification vehicle according to any one of claims 1-3, characterized in that, The flexible connector is a filter cloth or filter membrane, and the radial width of the flexible connector is greater than the width of the flip gap.

5. A water purification vehicle according to claim 4, characterized in that, A plurality of limiting ropes are fixed between the outer edge of the filter disc and the inner wall of the flocculation tank, and the length of the limiting ropes is less than the radial width of the flexible connector after it is flattened.

6. A water purification vehicle according to claim 5, characterized in that, The vertical height of the connection between the inner ring of the flexible connector and the filter disc is greater than the vertical height of the connection between the outer ring of the flexible connector and the inner wall of the flocculation tank when the filter disc is in any flipped state.

7. A water purification vehicle according to claim 6, characterized in that, The flocculation tank is externally connected to a drain pipe, which is equipped with a drain valve. The drain pipe is located on the side of the filter disc where a counterweight is located.

8. A water purification vehicle according to claim 1, characterized in that, A ball head is coaxially fixed to the outer wall of the arc surface of the central shaft cylinder, and a ball sleeve is fitted around the ball head in the horizontal circumferential direction. The filter disc is coaxially fixed to the outer circumferential wall of the arc surface of the ball sleeve.

9. A water purification vehicle according to claim 1, characterized in that, The counterweights on different filter discs are projected at different positions on the bottom wall of the flocculation tank.

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