High-speed filtering device

Abstract

The utility model relates to a high-speed filter device which comprises a tank body, a water inlet pipe, a water outlet pipe, a polymer fiber filter material, a backwashing pipe, a cleaning assembly and a drainage pipe, the tank body is provided with a filter cavity, the polymer fiber filter material is filled in the filter cavity, one end of the water inlet pipe is connected with the tank body and communicated to the filter cavity, the water outlet pipe is arranged at the top of the tank body and communicated with the filter cavity, and the water outlet pipe is used for discharging filtered water; the water discharging pipe is communicated with the water outlet pipe and is used for discharging cleaning wastewater; the cleaning assembly is arranged at the bottom of the tank body and is used for stirring the polymer fiber filter material in the filter cavity. The polymer fiber filter material has high porosity and filtering precision, the filtering precision and the filtering speed of the device can be effectively improved, and the occupied area can be effectively reduced. Meanwhile, during backwashing, the polymer fiber filter material is stirred through the cleaning assembly, so that the cleaning water can be effectively reduced, the cleaning time is shortened, and the cleaning effect is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of filtering equipment, and in particular to a high-speed filtering device. Background Art

[0002] At present, multi-media filters are commonly used in water treatment and filtration processes, and multi-media filters are used to filter water. Usually, multi-media filters mainly include the following components: tank, water distribution component, support component, backwash air pipe, filter material, exhaust valve (external), etc. Multi-media filters use two or more filter media to pass water with high turbidity through a certain thickness of granular or non-granular materials under a certain pressure, thereby effectively removing suspended impurities and clarifying the water. Commonly used filter materials include quartz sand, anthracite, manganese sand, etc., which are mainly used for water treatment turbidity removal, softened water, and pre-treatment of pure water.

[0003] The working principle of the multi-media filter is as follows: when raw water passes through the filter material from top to bottom, the suspended matter in the water is intercepted by the surface of the filter layer due to adsorption and mechanical resistance; when the water flows into the middle of the filter layer, the sand particles in the filter material layer are arranged more closely, and the particles in the water have more opportunities to collide with the sand particles, causing the flocculants, suspended matter and sand particles in the water to adhere to each other, and the impurities in the water are intercepted in the filter material layer, thereby obtaining clear water quality.

[0004] The backwashing principle of the multi-media filter is: the water flows in the reverse direction (from bottom to top) through the filter layer, causing the filter layer to expand and suspend, and the filter layer is cleaned by the shear force of the water flow and the collision friction of the particles, so that the dirt in the filter layer is separated and discharged with the backwash water. The backwashing cycle is controlled by the inlet and outlet pressure difference parameter setting, which depends on the turbidity of the raw water.

[0005] At present, when a multi-media filter is used to filter water, the filtration accuracy of the multi-media filter is low, and it is difficult to achieve the effluent water quality that requires low suspended matter, which affects the effluent quality. In addition, the filtration speed of the multi-media filter is low, and the water volume processed by a single filter is small. When treating sewage with a large amount of water, multiple devices need to be built, resulting in a large footprint, a long backwashing time and a large amount of water required for backwashing. Summary of the invention

[0006] Based on this, it is necessary to provide a high-speed filtration device to address the problems of low filtration accuracy and filtration speed, large amount of cleaning water, etc. in the current multi-media filters, which can improve the filtration accuracy and water output, reduce the amount of cleaning water, and ensure the cleaning effect.

[0007] A high-speed filtering device comprises a tank body, a water inlet pipe, a water outlet pipe, a polymer fiber filter material, a backwash pipe, a cleaning component and a drain pipe;

[0008] The tank body has a filter cavity, the polymer fiber filter material is filled in the filter cavity, one end of the water inlet pipe is connected to the tank body and communicated with the filter cavity, the water outlet pipe is arranged on the top of the tank body and communicated with the filter cavity, and the water outlet pipe is used to discharge filtered water;

[0009] The backwash pipe is connected to the water outlet pipe and the water inlet pipe, the drain pipe is connected to the water outlet pipe, and the drain pipe is used to discharge the cleaning waste water;

[0010] The cleaning component is arranged at the bottom of the tank body and is used for stirring the polymer fiber filter material in the filter cavity.

[0011] In one embodiment of the present application, the polymer fiber filter material is made of one or more of polypropylene material, polyester material, polytetrafluoroethylene material and polyamide material.

[0012] In one embodiment of the present application, the filling ratio of the polymer fiber filter material in the filter cavity is 35% to 70%;

[0013] And / or, the filtration accuracy of the polymer fiber filter material is 8 μm to 15 μm;

[0014] And / or, the specific gravity of the filter material is 0.90~0.96.

[0015] In one embodiment of the present application, the water inlet pipe is arranged on the side of the tank body, the backwash pipe extends along the height direction of the tank body and connects the water inlet pipe and the water outlet pipe.

[0016] In one embodiment of the present application, the high-speed filtering device further comprises a control component, the control component comprising a controller and a first valve, a second valve and a third valve control-connected to the controller;

[0017] The first valve is arranged on the water inlet pipe, and is used to control the on and off of the water inlet pipe;

[0018] The second valve is arranged on the water outlet pipe, and is used to control the on and off of the water outlet pipe;

[0019] The third valve is arranged on the backwash pipe and is used to control the on and off of the backwash pipe.

[0020] In one embodiment of the present application, the control component further includes a fourth valve, the fourth valve is control-connected to the controller, and the fourth valve is disposed in the drain pipe.

[0021] In one embodiment of the present application, the cleaning component includes a stirring motor and a stirring impeller. The stirring impeller is rotatably disposed in the filter chamber. The stirring motor is disposed in the tank body and penetrates the tank body to be connected to the stirring impeller. The stirring motor drives the stirring impeller to rotate in the filter chamber.

[0022] In one embodiment of the present application, the high-speed filtering device further includes a drain pipe, which is disposed at the bottom of the tank body and is connected to the filter chamber, and the drain pipe is used to discharge waste water from the tank body.

[0023] In one embodiment of the present application, the high-speed filtering device also includes a control component, which includes a controller and a fifth valve, the fifth valve is control-connected to the controller, and the fifth valve is arranged in the drain pipe to control the opening and closing of the drain pipe.

[0024] In one embodiment of the present application, the high-speed filtering device further comprises a filter screen, and the filter screen is arranged at one end of the water outlet pipe located in the filter cavity to prevent the polymer fiber filter material from entering the water outlet pipe.

[0025] After adopting the above technical solution, this application has at least the following technical effects:

[0026] The high-speed filtering device of the present application is characterized in that the polymer fiber filter material is filled in the filter chamber, one end of the water inlet pipe is connected to the tank body and connected to the filter chamber, the water outlet pipe is arranged on the top of the tank body and connected to the filter chamber, and the backwash pipe connects the water outlet pipe and the water inlet pipe on the outside of the tank body. During filtering, the pre-filter water enters the filter chamber through the water inlet pipe, and the pre-filter water can contact with the polymer fiber filter material. The polymer fiber filter material has a high porosity and filtering accuracy, and can achieve full filtering of the pre-filter water. The filtered water is discharged through the water outlet pipe. During backwashing, the water in the water inlet pipe enters the filter chamber through the backwash pipe and the water outlet pipe, and the cleaning component rotates at the bottom of the filter chamber to stir the polymer fiber filter material to achieve the cleaning of the polymer fiber filter material. During forward washing, the water in the water inlet pipe directly enters the filter chamber and is drained through the drain pipe.

[0027] The high-speed filtering device fills the filter cavity of the tank with polymer fiber filter material, which has high porosity and filtering accuracy, and can effectively improve the filtering accuracy and filtering speed of the device to ensure the water output, and can meet the power requirements without setting up multiple filtering devices, which can effectively reduce the floor space and reduce the filtering cost. At the same time, during backwashing, the polymer fiber filter material is stirred by the cleaning component, which can effectively reduce the cleaning water, shorten the cleaning time, and ensure the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG. 1 is a schematic structural diagram of a high-speed filtering device according to an embodiment of the present application.

[0029] FIG. 2 is a schematic diagram of the high-speed filtering device shown in FIG. 1 during filtering.

[0030] FIG. 3 is a schematic diagram of the high-speed filtering device shown in FIG. 1 when the filter material is stirred.

[0031] FIG. 4 is a schematic diagram of the high-speed filtering device shown in FIG. 1 during backwashing.

[0032] FIG. 5 is a schematic diagram of the high-speed filtering device shown in FIG. 1 during normal washing.

[0033] FIG. 6 is a schematic diagram of the high-speed filtering device shown in FIG. 1 when being emptied.

[0034] Wherein: 100, high-speed filtering device; 110, tank body; 111, filtering chamber; 112, outlet pipe; 120, water inlet pipe; 130, water outlet pipe; 140, polymer fiber filter material; 150, backwash pipe; 160, cleaning component; 161, stirring motor; 162, stirring impeller; 170, drain pipe; 180, control component; 181, first valve; 182, second valve; 183, third valve; 184, fourth valve; 185, fifth valve; 190, drain pipe. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0036] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0037] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0039] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "on" or "below" a second feature, etc., or the like, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0041] Referring to FIG. 1 , the present application provides a high-speed filtering device 100. FIG. 1 is a schematic structural diagram of a high-speed filtering device 100 of an embodiment of the present application. The high-speed filtering device 100 can filter pre-filtered water to remove impurity particles in the pre-filtered water, etc., to obtain clean post-filtered water. Pre-filtered water refers to water before being filtered by the high-speed filtering device 100, and post-filtered water refers to water after being filtered by the high-speed filtering device 100. It can be understood that the high-speed filtering device 100 can be used to treat wastewater, such as industrial wastewater, municipal sewage, etc., to solve the upgrading and transformation of large-scale municipal or industrial sewage treatment and the reuse system of reclaimed water, and can be used as a filter cloth filter tank of the current municipal sewage treatment plant and a filter tank for industrial reuse water treatment or replacement. Of course, the high-speed filtering device 100 can also be used in a circulating water treatment system, and its bypass equipment can be transformed or replaced in the circulating water treatment system. The present application does not limit the application scenario of the high-speed filtering device 100, and only illustrates the specific structure of the high-speed filtering device 100 with pre-filtered water and post-filtered water.

[0042] It is understandable that when a multi-media filter is currently used to filter water, the filtration accuracy of the multi-media filter is low, and it is difficult to achieve the effluent water quality that requires low suspended matter, which affects the effluent quality. In addition, the filtration speed of the multi-media filter is low, and the water volume processed by a single filter is small. When treating sewage with a large amount of water, multiple devices need to be built, resulting in a large footprint, a long backwashing time and a large amount of water required for backwashing. To this end, the present application provides a new type of high-speed filtration device 100, which can improve the filtration accuracy and filtration speed to ensure the water output, and reduce the amount of water used for cleaning to ensure the cleaning effect. The specific structure of the high-speed filtration device 100 of an embodiment is introduced below.

[0043] Referring to Fig. 1, in one embodiment, the high-speed filtering device 100 includes a tank body 110, a water inlet pipe 120, a water outlet pipe 130, a polymer fiber filter material 140, a backwash pipe 150, a cleaning component 160, and a drain pipe 170. The tank body 110 has a filter chamber 111, and the polymer fiber filter material 140 is filled in the filter chamber 111. One end of the water inlet pipe 120 is connected to the tank body 110 and communicated with the filter chamber 111. The water outlet pipe 130 is provided at the top of the tank body 110 and communicated with the filter chamber 111. The water outlet pipe 130 is used to discharge filtered water. The backwash pipe 150 connects the water outlet pipe 130 with the water inlet pipe 120, and the drain pipe 170 connects the water outlet pipe 130. The drain pipe 170 is used to discharge cleaning waste water. The cleaning assembly 160 is disposed at the bottom of the tank body 110 and is used to stir the polymer fiber filter material 140 in the filter cavity 111 .

[0044] The tank body 110 is the main structure of the high-speed filtering device 100 and is a housing for filtering the pre-filter water. The tank body 110 is arranged in the height direction and is hollow. The internal cavity of the tank body 110 is a filter cavity 111, and the polymer fiber filter material 140 is filled in the filter cavity 111. The polymer fiber filter material 140 is the main component for filtering the pre-filter water. The pre-filter water can contact the polymer fiber filter material 140 in the filter cavity 111 to filter the pre-filter water. The polymer fiber filter material 140 can effectively remove suspended matter, particulate matter, colloids and other substances in the pre-filter water.

[0045] The water inlet pipe 120 is a water inlet distribution pipe of the high-speed filtering device 100. One end of the water inlet pipe 120 is connected to the tank body 110 and communicated with the filter chamber 111. The water inlet pipe 120 can transport pre-filtered water to transport the pre-filtered water to the filter chamber 111. The water outlet pipe 130 is a water outlet distribution pipe of the high-speed filtering device 100. One end of the water outlet pipe 130 is connected to the tank body 110 and communicated with the filter chamber 111. The water outlet pipe 130 can output filtered water to output the filtered filtered water from the filter chamber 111.

[0046] Moreover, after the high-speed filtering device 100 has been used for a period of time, the polymer fiber filter material 140 needs to be cleaned to remove suspended particles adsorbed on the surface of the polymer fiber filter material 140, to ensure the filtering capacity of the polymer fiber filter material 140, and to facilitate the reuse of the high-speed filtering device 100. Usually, the high-speed filtering device 100 uses cleaning water to clean the polymer fiber filter material 140 to ensure the cleaning effect of the polymer fiber filter material 140. The cleaning water here can refer to filtered water or other pre-treated water.

[0047] The backwash pipe 150 connects the water inlet pipe 120 and the water outlet pipe 130. The backwash pipe 150 is used to transport the cleaning water in the water inlet pipe 120 to the tank body 110 through the water outlet pipe 130 to achieve backwashing of the polymer fiber filter material 140. The drain pipe 170 is connected to the water outlet pipe 130, and the waste water after washing is drained through the drain pipe 170. The cleaning component 160 is arranged at the bottom of the tank body 110 and is rotatably located at the bottom of the filter chamber 111. When the cleaning component 160 rotates in the filter chamber 111, it can stir the polymer fiber filter material 140 in the filter chamber 111 to separate the suspended particles adsorbed on the surface of the polymer fiber filter material 140, which is convenient for the backwashing and forward washing of the polymer fiber filter material 140 in the later stage.

[0048] Referring to Figures 1 to 5, it can be understood that the working process of the high-speed filtering device 100 is mainly divided into the following steps, namely, filtering, filter material stirring, backwashing, and normal washing. Figure 2 is a schematic diagram of the high-speed filtering device 100 shown in Figure 1 when filtering, Figure 3 is a schematic diagram of the high-speed filtering device 100 shown in Figure 1 when the filter material is stirred, Figure 4 is a schematic diagram of the high-speed filtering device 100 shown in Figure 1 when backwashing, and Figure 5 is a schematic diagram of the high-speed filtering device 100 shown in Figure 1 when normal washing, wherein water flows in the direction of the arrow in each figure. When filtering using the high-speed filtering device 100 of the present application, the pre-filtered water is transported to the filter chamber 111 of the tank body 110 through the water inlet pipe 120, the pre-filtered water contacts with the polymer fiber filter material 140 in the filter chamber 111, and the pre-filtered water is filtered by the polymer fiber filter material 140 to obtain filtered water, and the filtered water is output from the tank body 110 through the water outlet pipe 130.

[0049] When the filter material is stirred, the cleaning component 160 stirs in the filter chamber 111, and the water flow drives the polymer fiber filter material 140 in the filter chamber 111 to rotate irregularly, swing and impact each other, thereby separating the suspended particles adsorbed on the surface of the polymer fiber filter material 140. During backwashing, the cleaning water enters the backwash pipe 150 through the water inlet pipe 120, and then enters the filter chamber 111 through the backwash pipe 150 and the water outlet pipe 130, and cooperates with the cleaning component 160 to stir the polymer fiber filter material 140. During forward washing, the cleaning water in the water inlet pipe 120 enters the filter chamber 111 to rinse the polymer fiber filter material 140, and the waste water after washing is discharged through the drain pipe 170. It can be understood that during backwashing, the cleaning water enters the filter chamber 111 from the top of the tank body 110 through the outlet pipe 112, and during forward washing and filtering, the cleaning water or pre-filtration water enters the filter chamber 111 from the bottom of the tank body 110 through the water inlet pipe 120.

[0050] In the present application, polymer fiber filter material 140 is used as the filter body. The polymer fiber filter material 140 has a high porosity and filtering accuracy, which can ensure the filtering accuracy and filtering speed, improve the water treatment capacity, and can ensure the filtering capacity without setting up multiple high-speed filters, effectively reducing the floor space. Moreover, since the polymer fiber filter material 140 has good suspension characteristics, during backwashing, the polymer fiber filter material 140 can rotate irregularly, swing and impact each other, thereby separating the suspended particles adsorbed on the surface of the filter material. The washing water used in the backwashing process is less, which effectively realizes the high-efficiency and low-cost treatment of wastewater.

[0051] The high-speed filtering device 100 of the above-mentioned embodiment is filled with a polymer fiber filter material 140 in the filter cavity 111 of the tank body 110. The polymer fiber filter material 140 has a high porosity and filtering accuracy, which can effectively improve the filtering accuracy and filtering speed of the device to ensure the water output, and can meet the power requirements without setting up multiple filtering devices, which can effectively reduce the floor space and reduce the filtering cost. At the same time, during backwashing, the polymer fiber filter material 140 is stirred by the cleaning component 160, which can effectively reduce the amount of cleaning water, shorten the cleaning time, and ensure the cleaning effect. The high-speed filtering device 100 not only improves the wastewater treatment efficiency but also reduces the amount of backwash wastewater, and has very good application prospects and practical significance.

[0052] Referring to Fig. 1, in one embodiment, the water inlet pipe 120 and the water outlet pipe 130 are located at opposite ends of the polymer fiber filter material 140, and the water inlet pipe 120 is located below the polymer fiber filter material 140, and the water outlet pipe 130 is located on the top of the polymer fiber filter material 140. In this way, the pre-filtered water transported by the water inlet pipe 120 can enter the water outlet pipe 130 after being filtered by the polymer fiber filter material 140, and the pre-filtered water in the water inlet pipe 120 can be prevented from being directly sent out through the water outlet pipe 130, so as to ensure the filtering effect.

[0053] Referring to FIG. 1 , in one embodiment, the water inlet pipe 120 is provided on the side of the tank body 110, and the backwash pipe 150 extends in the height direction of the tank body 110 and connects the water inlet pipe 120 with the water outlet pipe 130. That is, the water inlet pipe 120 is connected to the tank body 110 at the side, and the water inlet pipe 120 is located below the water outlet pipe 130 and below the polymer fiber filter material 140, and the water inlet pipe 120 transports water to the filter chamber 111 at the side of the tank body 110. Moreover, the backwash pipe 150 connects the water inlet pipe 120 and the water outlet pipe 130 on the outside of the tank body 110, and the backwash pipe 150 extends in the height direction of the tank body 110 to directly transport the cleaning water in the water inlet pipe 120 to the tank body 110 through the water outlet pipe 130.

[0054] In one embodiment, the tank body 110 further includes an outlet pipe 112, which is disposed on the tank body 110, one end of which is disposed on the tank body 110 and connected to the filter chamber 111, the other end of which is connected to one end of the outlet pipe 130, the other end of which is also connected to one end of the drain pipe 170, and the backwash pipe 150 connects the water inlet pipe 120 and the outlet pipe 130. In other words, the outlet pipe 112 is equivalent to a three-way structure, one end of which is connected to the tank body 110, the other end of which is connected to the outlet pipe 130, and the other end of which is connected to the drain pipe 170.

[0055] During filtration, the filtered water in the filter chamber 111 enters the outlet pipe 130 through the outlet pipe 112, thereby realizing the discharge of the filtered water; during washing, the cleaning waste water enters the drain pipe 170 through the outlet pipe 112, thereby realizing the discharge of the cleaning waste water. It is worth noting that the outlet pipe 112 is the output pipe of the tank body 110, which can output the cleaning waste water and the filtered water. Optionally, the outlet pipe 112 can be an integral structure with the outlet pipe 130, or can be separately arranged. In the following text, only the outlet pipe 130 is used to describe the process of draining water from the tank body 110.

[0056] Referring to Fig. 1 and Fig. 5, in one embodiment, the high-speed filtering device 100 further includes an emptying pipe 190, which is disposed at the bottom of the tank body 110 and communicated with the filter chamber 111. The emptying pipe 190 is used to discharge the waste water from the tank body 110. During filtering and cleaning, the emptying pipe 190 is closed. When the high-speed filtering device 100 is cleaned, the emptying pipe 190 is opened. At this time, the emptying pipe 190 can completely discharge the cleaning waste water in the tank body 110 from the tank body 110 to avoid contamination of the pre-filter water for the next filtration.

[0057] In one embodiment, the polymer fiber filter material 140 is made of one or more of polypropylene material, polyester material, polytetrafluoroethylene material and polyamide material. The polymer fiber filter material 140 made of one or more of the above materials can capture various suspended substances in the micron level in the water before filtration. Moreover, the polymer fiber filter material 140 made of one or more of the above materials has the characteristics of high mechanical strength, high filtration accuracy, good adsorption effect, etc., and the peel strength of the polymer fiber filter material 140 is able to correspond to stirring, cleaning and melting treatment, so that it can also exert stable performance after long-term use.

[0058] Optionally, the polymer fiber filter material 140 can be made of polypropylene material, polyester material, polytetrafluoroethylene material or polyamide material to ensure the filtration accuracy and filtration speed of the polymer fiber filter material 140. Of course, in other embodiments of the present application, the polymer fiber filter material 140 can also be a combination of polypropylene material, polyester material, polytetrafluoroethylene material and polyamide material, which can also ensure the filtration accuracy and filtration speed of the polymer fiber filter material 140. Due to the characteristics of the material itself used by the polymer fiber filter material 140, the porosity of the polymer fiber filter material 140 can be guaranteed to increase the filtration speed.

[0059] In one embodiment, the filling ratio of the polymer fiber filter material 140 in the filter cavity 111 is 35% to 70%; and / or the filtration accuracy of the polymer fiber filter material 140 is 8 μm to 15 μm; and / or the specific gravity of the filter material is 0.90 to 0.96. In this way, the proportion of the polymer fiber material in the filter cavity 111 can be guaranteed, and during the filtration process, the polymer fiber filter material 140 forms a stacking effect, which can effectively remove suspended matter, particulate colloids and other substances in the water before filtration.

[0060] Exemplarily, the filling ratio of the polymer fiber filter material 140 in the filter cavity 111 is 50%~60%, the specification of a single polymer fiber filter material 140 is 5mm×5mm×4mm, its filtration accuracy is 10um, and the filter material specific gravity is 0.94. In this way, the polymer fiber filter material 140 can form a stacking effect during the filtration process to effectively remove suspended matter, particulate colloids and other substances in the wastewater.

[0061] Referring to FIGS. 1 to 5 , in one embodiment, the high-speed filtering device 100 further includes a control assembly 180, and the control assembly 180 includes a controller and a first valve 181, a second valve 182, and a third valve 183 connected to the controller. The first valve 181 is provided at the water inlet pipe 120, and is used to control the on-off of the water inlet pipe 120. The second valve 182 is provided at the water outlet pipe 130, and is used to control the on-off of the water outlet pipe 130. The third valve 183 is provided at the backwash pipe 150, and is used to control the on-off of the backwash pipe 150.

[0062] The control component 180 is a control component in the high-speed filter device 100. The control component 180 is used to control each valve in the high-speed filter device 100, so that the high-speed filter device 100 can execute the corresponding workflow to ensure the actual performance of the high-speed filter device 100. It can be understood that the control component 180 can be connected to the control system of the entire circulating water treatment system to achieve overall control.

[0063] The first valve 181 is provided on the water inlet pipe 120 and is located between the tank body 110 and the backwash pipe 150 to control the on-off of the water inlet pipe 120. Thus, when the first valve 181 is opened, water in the water inlet pipe 120 can enter the tank body 110, and when the first valve 181 is closed, water in the water inlet pipe 120 can enter the backwash pipe 150 and cannot enter the tank body 110 through the water inlet pipe 120.

[0064] The second valve 182 is provided on the water outlet pipe 130 and is located on the side of the backwash pipe 150 away from the tank body 110 to control the on-off of the water outlet pipe 130. Thus, when the second valve 182 is opened, the water in the tank body 110 can be discharged through the water outlet pipe 130. When the second valve 182 is closed, the water outlet pipe 130 cannot discharge the water, and the backwash pipe 150 cannot discharge the water through the water outlet pipe 130, and can only send the water into the tank body 110 through the water outlet pipe 130. The third valve 183 is provided on the backwash pipe 150 to control the on-off of the backwash pipe 150.

[0065] The controller is electrically connected to the first valve 181, the second valve 182 and the third valve 183, and the controller can control the on and off of the first valve 181, the second valve 182 and the third valve 183. Optionally, the first valve 181, the second valve 182 and the third valve 183 are solenoid valves or other switch valves capable of on and off control.

[0066] As shown in FIG1 and FIG2, when the high-speed filter device 100 is filtering, the controller controls the first valve 181 and the second valve 182 to open, and the pre-filter water enters the filter chamber 111 through the water inlet pipe 120, and after filtering through the polymer fiber filter material 140, the filtered water is output through the water outlet pipe 130. As shown in FIG1 and FIG3, when the high-speed filter device 100 is stirring the filter material, the controller controls the first valve 181, the second valve 182 and the third valve 183 to close, and the cleaning component 160 uses water flow to stir the polymer fiber filter material 140 in the filter chamber 111. When the high-speed filter device 100 is backwashing, the controller controls the first valve 181 and the second valve 182 to close, and controls the second valve 182 to open, and the cleaning water enters the backwash pipe 150 through the water inlet pipe 120, and then enters the tank body 110 through the water outlet pipe 130 to backwash the polymer fiber filter material 140.

[0067] Referring to FIGS. 1 to 5 , in one embodiment, the control assembly 180 further includes a fourth valve 184, which is connected to the controller for control, and the fourth valve 184 is disposed in the drain pipe 170. Optionally, the fourth valve 184 is a solenoid valve or a switch valve capable of realizing on-off control. The fourth valve 184 is disposed in the drain pipe 170 and can control the on-off of the drain pipe 170. When the fourth valve 184 is opened, the waste water in the tank body 110 can be discharged through the drain pipe 170. Specifically, when the high-speed filtering device 100 is washing, the controller controls the second valve 182 and the third valve 183 to be closed, and controls the first valve 181 and the fourth valve 184 to be opened. At this time, the cleaning water enters the tank body 110 through the water inlet pipe 120, and the cleaning water can backwash the completed polymer fiber filter material 140 for filtering and washing. The washed waste water enters the drain pipe 170 through the outlet pipe 112, and is then discharged through the drain pipe 170.

[0068] Referring to Figures 1 to 6, in one embodiment, the control component 180 further includes a fifth valve 185, which is connected to the controller control, and the fifth valve 185 is disposed in the drain pipe 190 to control the on-off of the drain pipe 190. Figure 6 is a schematic diagram of the high-speed filtering device 100 shown in Figure 1 when emptying. Optionally, the fifth valve 185 is a solenoid valve or other switch valve capable of on-off control. When the fifth valve 185 is opened, the waste water in the tank body 110 can be discharged through the drain pipe 190. Specifically, after the high-speed filtering device 100 is washed, there may still be residual waste water from the washing in the tank body 110. After the fifth valve 185 is opened, the residual waste water in the tank body 110 can be emptied through the drain pipe 190.

[0069] Referring to Figures 1 and 3, in one embodiment, the cleaning component 160 includes a stirring motor 161 and a stirring impeller 162. The stirring impeller 162 is rotatably disposed in the filter chamber 111. The stirring motor 161 is disposed in the tank body 110 and penetrates the tank body 110 to be connected to the stirring impeller 162. The stirring motor 161 drives the stirring impeller 162 to rotate in the filter chamber 111.

[0070] The stirring motor 161 is located at the bottom of the tank body 110 and at the outside of the tank body 110. The output shaft of the stirring motor 161 extends into the tank body 110 and is connected to the stirring impeller 162. The stirring motor 161 is also electrically connected to the controller. When the high-speed filtering device 100 stirs the filter material, the controller controls the stirring motor 161 to work, and then the stirring motor 161 can control the water flow to drive the polymer fiber filter material 140 to rotate irregularly, swing and impact each other in the filter chamber 111, thereby separating the suspended particles adsorbed on the surface of the polymer fiber filter material 140.

[0071] In one embodiment, the high-speed filtering device 100 further includes a filter screen, which is disposed at one end of the water outlet pipe 130 located in the filter chamber 111 to block the polymer fiber filter material 140 from entering the water outlet pipe 130. The filter screen is located in the tank body 110, and the filter screen can block the polymer fiber filter material 140 in the filter chamber 111 to prevent the water flow from carrying away the polymer fiber filter material 140 during drainage.

[0072] In one embodiment, the high-speed filtering device 100 further includes a support, which is disposed at the bottom of the tank body 110 and is used to support the tank body 110. After the support supports the tank body 110, the stability of the tank body 110 can be ensured, and the shaking of the tank body 110 during operation can be reduced. Moreover, the support is usually supported on the ground or a platform. Optionally, the support is a leg or a bracket.

[0073] When the high-speed filtering device 100 of the present application is filtering, as shown in FIG. 1 and FIG. 2 , the controller controls the third valve 183, the fourth valve 184 and the fifth valve 185 to be closed, and controls the first valve 181 and the second valve 182 to be opened, and the pre-filtered water such as waste water enters the filter chamber 111 of the tank body 110 at a speed of 50-80 m / h through the water inlet pipe 120, and after being filtered by the polymer fiber filter material 140, the filtered water is discharged from the water outlet pipe 130. The polymer fiber filter material 140 has a large specific surface area, a strong ability to adsorb and intercept suspended matter, a filtering accuracy of 10 um, and a suspended matter concentration of the filtered water is not higher than 5 mg / L.

[0074] As shown in Fig. 1, Fig. 3 to Fig. 5, when cleaning the polymer fiber filter material 140, the high-speed filter device 100 first stirs the filter material, as shown in Fig. 1 and Fig. 3, and this step is the first step of cleaning the polymer fiber filter material 140. The controller controls the first valve 181, the second valve 182, the third valve 183, the fourth valve 184 and the fifth valve 185 to be closed, and controls the stirring motor 161 to work, the stirring motor 161 drives the stirring impeller 162 to rotate in the filter chamber 111, and the stirring impeller 162 forces the water flow to stir, so that the polymer fiber filter material 140 rotates irregularly, swings and impacts each other, thereby separating the suspended particles adsorbed on the surface of the polymer fiber filter material 140, so that the polymer fiber filter material 140 is quickly cleaned.

[0075] Subsequently, the high-speed filtering device 100 performs backwashing, as shown in FIG. 1 and FIG. 4 , the controller controls the first valve 181, the second valve 182, the fourth valve 184 and the fifth valve 185 to be closed, and controls the third valve 183 to be opened, and the cleaning water enters the tank body 110 through the water inlet pipe 120, the backwash pipe 150 and the water outlet pipe 130, and cooperates with the stirring impeller 162 to achieve the cleaning of the polymer fiber filter material 140. Due to the presence of the stirring impeller 162, the amount of water used for backwashing is 1%-3% of the amount of water used for conventional filtration backwashing.

[0076] Subsequently, the high-speed filtering device 100 is washed again, as shown in FIG1 and FIG5, the controller controls the second valve 182, the third valve 183 and the fifth valve 185 to be closed, and controls the first valve 181 and the fourth valve 184 to be opened, and the washing water enters the tank body 110 through the water inlet pipe 120, and the washed polymer fiber filter material 140 is filtered and washed, and the washed waste water is discharged through the drain pipe 170. Finally, the high-speed filtering device 100 is emptied, as shown in FIG1 and FIG6, the controller controls the first valve 181, the second valve 182, the third valve 183 and the fourth valve 184 to be closed, and controls the fifth valve 185 to be opened, and the waste water in the tank body 110 after the washing is completed is emptied.

[0077] The high-speed filtering device 100 of the present application adopts a polymer fiber filter material 140 as a filtering unit. The polymer fiber filter material 140 has a high porosity and filtering accuracy, which can effectively improve the filtering speed of the device and effectively reduce the floor space. At the same time, the polymer fiber filter material 140 has a high mechanical strength and can effectively resist the wear of the filter material during the filtering and filter material cleaning process. The service life is long and generally can reach more than 8 years of operation. The washing water used in the backwashing process is less, which effectively realizes the high-efficiency and low-cost treatment of wastewater.

[0078] Moreover, the processing scale of a single set of the high-speed filter device 100 is relatively large, and it is suitable for upgrading and reclaiming water systems for large-scale municipal or industrial sewage treatment, and can be used as a filter cloth filter tank of a current municipal sewage treatment plant and a filter tank for industrial reuse water treatment or a replacement. In addition, the high-speed filter device 100 uses a unique cleaning method to clean the polymer fiber filter material 140 extremely thoroughly, and the same cleaning effect can be achieved by cleaning with pre-filter water and post-filter water. At the same time, the high-speed filter device 100 is simple and convenient to install and maintain, avoiding the labor intensity of replacing the traditional filter chamber 111 and cleaning the filter material in vitro.

[0079] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A high-speed filtering device, characterized in that: It includes a tank body, a water inlet pipe, a water outlet pipe, a polymer fiber filter material, a backwash pipe, a cleaning component and a drain pipe; The tank body has a filter cavity, the polymer fiber filter material is filled in the filter cavity, one end of the water inlet pipe is connected to the tank body and communicated with the filter cavity, the water outlet pipe is arranged on the top of the tank body and communicated with the filter cavity, and the water outlet pipe is used to discharge filtered water; The backwash pipe is connected to the water outlet pipe and the water inlet pipe, the drain pipe is connected to the water outlet pipe, and the drain pipe is used to discharge the cleaning waste water; The cleaning component is arranged at the bottom of the tank body and is used for stirring the polymer fiber filter material in the filter cavity.

2. The high-speed filtering device according to claim 1, characterized in that: The polymer fiber filter material is made of one or more of polypropylene material, polyester material, polytetrafluoroethylene material and polyamide material.

3. The high-speed filtering device according to claim 1, characterized in that: The filling ratio of the polymer fiber filter material in the filter cavity is 35% to 70%; And / or, the filtration accuracy of the polymer fiber filter material is 8 μm to 15 μm; And / or, the specific gravity of the filter material is 0.90~0.

96.

4. The high-speed filtering device according to claim 1, characterized in that: The water inlet pipe is arranged on the side of the tank body, and the backwash pipe extends along the height direction of the tank body and connects the water inlet pipe with the water outlet pipe.

5. The high-speed filtering device according to any one of claims 1 to 4, characterized in that: The high-speed filtering device further comprises a control component, wherein the control component comprises a controller and a first valve, a second valve and a third valve which are control-connected to the controller; The first valve is arranged on the water inlet pipe, and is used to control the on and off of the water inlet pipe; The second valve is arranged on the water outlet pipe, and is used to control the on and off of the water outlet pipe; The third valve is arranged on the backwash pipe and is used to control the on and off of the backwash pipe.

6. The high-speed filtering device according to claim 5, characterized in that: The control component also includes a fourth valve, which is controllably connected to the controller and is disposed on the drain pipe.

7. The high-speed filtering device according to any one of claims 1 to 4, characterized in that: The cleaning component includes a stirring motor and a stirring impeller. The stirring impeller is rotatably disposed in the filter chamber. The stirring motor is disposed in the tank body and penetrates the tank body to be connected with the stirring impeller. The stirring motor drives the stirring impeller to rotate in the filter chamber.

8. The high-speed filtering device according to any one of claims 1 to 4, characterized in that: The high-speed filtering device also includes a drain pipe, which is arranged at the bottom of the tank body and communicated with the filter chamber. The drain pipe is used to discharge waste water from the tank body.

9. The high-speed filtering device according to claim 8, characterized in that: The high-speed filtering device also includes a control component, which includes a controller and a fifth valve. The fifth valve is control-connected to the controller, and the fifth valve is arranged on the drain pipe to control the on-off of the drain pipe.

10. The high-speed filtering device according to any one of claims 1 to 4, characterized in that: The high-speed filtering device also includes a filter screen, which is arranged at one end of the water outlet pipe located in the filter cavity to prevent the high-molecular fiber filter material from entering the water outlet pipe.

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