Tap water pretreatment filtering device capable of automatically backwashing

Abstract

The utility model belongs to the technical field of tap water treatment filtering, and particularly relates to a tap water pretreatment filtering device capable of automatically backwashing, which comprises a filter main body and a filter screen arranged in the filter main body, the opposite ends of the filter screen are arc-shaped, and the opposite sides of the filter screen are provided with connecting components. The filter screen is connected with the filter body through the two connecting assemblies, two sliding grooves and two connecting grooves are formed in the filter body, the two connecting grooves are communicated with the two sliding grooves respectively, and the two connecting assemblies are movably arranged in the two sliding grooves and the two connecting grooves respectively. Clamping holes for clamping the two connecting assemblies are further formed in the two sliding grooves, the pushing sets push the clamping blocks, so that the clamping blocks can be separated from the positions of the clamping holes, at the moment, the filter screen can be rotated, the fixing frames enter the connecting grooves through the sliding grooves, the fixing frames are taken out of the connecting grooves, and then the filter screen can be conveniently taken out. The filter screen dismounting device is simple in structure and easy to operate, so that the filter screen is very convenient to maintain and mount.

Description

Technical Field

[0001] This utility model relates to the field of tap water treatment and filtration technology, specifically to a tap water pretreatment and filtration device with automatic backwashing capability. Background Technology

[0002] Automatic backwash filters pre-treat tap water using filter cartridges or screens, intercepting and removing impurities and particulate matter from the water. At the same time, the device has an automatic backwashing function, which can automatically identify the degree of impurity deposition during the filtration process and automatically start the backwashing process to remove impurities from the filter cartridges or screens, thereby maintaining the cleanliness of the filter cartridges or screens and the filtration efficiency.

[0003] Specifically, its working process is as follows: The water to be treated enters the automatic backwash filter body through the inlet. When the water passes through the filter screen, the filter screen can directly intercept impurities in the water, such as suspended solids and particulate matter, thereby purifying the water quality. As the filtration process proceeds, impurities on the filter element or filter screen gradually accumulate, forming a filter impurity layer, which causes a pressure difference between the inside and outside of the filter element or filter screen. When this pressure difference reaches a preset value, the automatic backwash filter will automatically start the cleaning process. At this time, the drain valve located at the bottom of the filter body opens, and the impurities on the filter screen are washed clean by the action of water or electric motor and discharged through the drain valve. After cleaning is completed, the drain valve closes, and the device returns to its initial state, preparing for the next filtration process.

[0004] During the use of the aforementioned equipment, after prolonged use, the filter screen may still accumulate dirt or impurities that are difficult to remove through automatic rinsing. At this time, the filter screen needs to be removed. However, the existing filter screen and filter body are usually integrated, which makes the maintenance of the filter screen more troublesome. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an automatic backwashing tap water pretreatment filtration device, which solves the problem that the existing filter screen and filter body are usually integrated, making the maintenance of the filter screen more troublesome.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic backwashing tap water pretreatment filtration device, comprising a filter body and a filter screen disposed inside the filter body, wherein the opposite ends of the filter screen are all arc-shaped, and connecting components are provided on the opposite sides of the filter screen. The filter screen is connected to the filter body through two connecting components. The filter body is provided with two sliding grooves and two connecting grooves inside, and the two connecting grooves are respectively connected to the two sliding grooves. The two connecting components are respectively movably disposed in the two sliding grooves and the two connecting grooves. The two sliding grooves are also provided with engaging holes for engaging the two connecting components.

[0007] The connecting assembly includes a fixed frame, a locking block, a spring, and a pushing assembly. One side of the fixed frame is fixedly connected to one side of the filter screen. One side of the locking block extends into the interior of the fixed frame. The edge of the locking block away from the fixed frame is rounded. The rounded edge of the locking block extends into the interior of the locking hole. The end of the locking block away from the locking hole is fixedly connected to one end of the spring. The end of the spring away from the locking block is fixedly connected to the interior side of the fixed frame. The pushing assembly is located on one side of the locking block and is used to push and adjust the position of the locking block.

[0008] Preferably, the pushing assembly includes a pushing plate and a pushing rod. One side of the pushing plate is fixedly connected to one side of the locking block. The pushing plate is movably disposed in a movable cavity provided on one side of the filter screen. The upper end of the pushing rod extends into the movable cavity, and one end of the pushing rod near the movable cavity is fixedly connected to the bottom of the pushing plate.

[0009] Preferably, the filter body includes an upper filter body, a lower filter body, an inlet pipe, an outlet pipe, and a drain pipe. The upper filter body is located above the lower filter body. The inlet pipe is installed on one side of the lower filter body, the outlet pipe is installed on one side of the upper filter body, and the drain pipe is installed at the bottom. A drain valve is fixedly connected to the end of the drain pipe away from the lower filter body.

[0010] Preferably, flanges are installed at the adjacent ends of both the upper filter body and the lower filter body, and the two flanges are connected by bolts.

[0011] Preferably, a sealing ring is fixedly connected to the lower filter body, and the sealing ring extends into a sealing groove provided at the bottom of the upper filter body.

[0012] Preferably, the outer side wall of the lower filter body is fixedly connected with multiple support columns.

[0013] Compared with the prior art, this utility model provides a tap water pretreatment filtration device with automatic backwashing capability, which has the following beneficial effects:

[0014] By incorporating a locking block, a pushing assembly, and a fixing frame, the filter screen can be disassembled by pushing the locking block with the pushing assembly, allowing it to disengage from the locking hole. The filter screen can then be rotated, causing the fixing frame to slide into the connecting groove. Pulling the filter screen outwards removes the fixing frame from the connecting groove, completing the filter screen disassembly and facilitating cleaning. For filter screen installation, the fixing frame is slid from the connecting groove into the sliding groove. During this process, the locking block is pressed into the fixing frame, compressing the spring until it enters the locking hole, completing the filter screen installation. The simple structure and easy operation make filter screen maintenance and installation very convenient. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of the tap water pretreatment and filtration device with automatic backwashing provided by this utility model.

[0016] Figure 2 An exploded view of the tap water pretreatment and filtration device with automatic backwashing provided by this utility model;

[0017] Figure 3 A schematic diagram of the upper filter body provided by this utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the lower filter body provided by this utility model;

[0019] Figure 5 A schematic diagram of the filter screen provided by this utility model;

[0020] Figure 6 An exploded view of the filter screen provided by this utility model.

[0021] In the diagram: 1. Upper filter body; 2. Lower filter body; 3. Flange; 4. Outlet pipe; 5. Inlet pipe; 6. Drain pipe; 7. Drain valve; 8. Support column; 9. Sealing ring; 10. Bolt; 11. Filter screen; 12. Fixing frame; 13. Connecting groove; 14. Sliding groove; 15. Engaging hole; 16. Engaging block; 17. Push rod; 18. Spring; 19. Push plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-6 In this embodiment: an automatic backwashable tap water pretreatment filtration device includes a filter body and a filter screen 11 disposed inside the filter body. The opposite ends of the filter screen 11 are all arc-shaped, and the opposite sides of the filter screen 11 are provided with connecting components. The filter screen 11 is connected to the filter body through two connecting components. The filter body is provided with two sliding grooves 14 and two connecting grooves 13. The two connecting grooves 13 are respectively connected to the two sliding grooves 14. The two connecting components are respectively movably disposed in the two sliding grooves 14 and the two connecting grooves 13. The two sliding grooves 14 are also provided with engaging holes 15 for engaging the two connecting components.

[0024] The connecting assembly includes a fixed frame 12, a locking block 16, a spring 18, and a pushing assembly. One side of the fixed frame 12 is fixedly connected to one side of the filter screen 11. One side of the locking block 16 extends into the interior of the fixed frame 12. The edge of the locking block 16 away from the fixed frame 12 is rounded. The rounded edge of the locking block 16 extends into the interior of the locking hole 15. The end of the locking block 16 away from the locking hole 15 is fixedly connected to one end of the spring 18. The end of the spring 18 away from the locking block 16 is fixedly connected to the interior side of the fixed frame 12. The pushing assembly is located on one side of the locking block 16 and is used to push and adjust the position of the locking block 16. The pushing assembly includes a pushing plate 19 and a pushing rod 17. One side of the pushing plate 19 is fixedly connected to one side of the locking block 16. The pushing plate 19 is movably disposed in the movable cavity provided on one side of the filter screen 11. The upper end of the pushing rod 17 extends into the movable cavity. The end of the pushing rod 17 near the movable cavity is fixedly connected to the bottom of the pushing plate 19.

[0025] Specifically, by setting the locking block 16 and the fixing frame 12, when disassembling the filter screen 11, the push rod 17 can drive the push plate 19 to move, and the push plate 19 can drive the locking block 16 to move, so that the locking block 16 can disengage from the locking hole 15. At this time, the filter screen 11 can be rotated, so that the fixing frame 12 enters the interior of the connecting groove 13 through the sliding groove 14. At this time, by pulling the filter screen 11 outward, the fixing frame 12 can be taken out from the interior of the connecting groove 13, completing the disassembly of the filter screen 11. At this time, the filter screen 11 can be easily cleaned.

[0026] When the filter screen 11 needs to be installed, the fixing frame 12 is slid from the connecting groove 13 into the sliding groove 14. During this process, the locking block 16 is pressed into the fixing frame 12 and the locking block 16 compresses the spring 18 until the locking block 16 enters the locking hole 15, thus completing the installation of the filter screen 11. The structure is simple and the operation is easy, making the maintenance and installation of the filter screen 11 very convenient.

[0027] The filter body includes an upper filter body 1, a lower filter body 2, an inlet pipe 5, an outlet pipe 4, and a drain pipe 6. The upper filter body 1 is located above the lower filter body 2. The inlet pipe 5 is installed on one side of the lower filter body 2, the outlet pipe 4 is installed on one side of the upper filter body 1, and the drain pipe 6 is installed at the bottom of the drain pipe 6. A drain valve 7 is fixedly connected to the end of the drain pipe 6 away from the lower filter body 2.

[0028] Specifically, the water to be treated enters the upper filter body 1 and the lower filter body 2 through the inlet. When the water passes through the filter screen 11, the filter screen 11 can directly intercept impurities in the water, such as suspended solids and particulate matter, thereby purifying the water quality. As the filtration process proceeds, impurities on the filter element or filter screen 11 gradually accumulate, forming a filter impurity layer, which causes a pressure difference between the inside and outside of the filter element or filter screen 11. When this pressure difference reaches a preset value, the automatic backwash filter will automatically start the cleaning process. At this time, the drain valve 7 located in the lower filter body 2 opens, washing away the impurities on the filter screen 11 and discharging them through the drain valve 7. After cleaning is completed, the drain valve 7 closes, and the device returns to its initial state, preparing for the next filtration process.

[0029] Flanges 3 are installed at the adjacent ends of the upper filter body 1 and the lower filter body 2. The two flanges 3 are connected by bolts 10. A sealing ring 9 is fixedly connected to the lower filter body 2. The sealing ring 9 extends into the sealing groove set at the bottom of the upper filter body 1. Multiple support columns 8 are fixedly connected to the outer side wall of the lower filter body 2. The setting of the sealing ring 9 makes the overall equipment more airtight.

[0030] The working principle and usage process of this utility model are as follows: When using this device, by setting the locking block 16 and the fixing frame 12, when disassembling the filter screen 11, the pushing rod 17 can drive the pushing plate 19 to move, and the pushing plate 19 can drive the locking block 16 to move, so that the locking block 16 can be disengaged from the locking hole 15. At this time, the filter screen 11 can be rotated, so that the fixing frame 12 enters the interior of the connecting groove 13 through the sliding groove 14. At this time, by pulling the filter screen 11 outward, the fixing frame 12 can be taken out from the interior of the connecting groove 13, thus completing the disassembly of the filter screen 11. At this time, the filter screen 11 can be easily cleaned.

[0031] When the filter 11 needs to be installed, the fixing frame 12 is slid from the connecting groove 13 into the sliding groove 14. During this process, the locking block 16 is pressed into the fixing frame 12 and the locking block 16 compresses the spring 18 until the locking block 16 enters the locking hole 15, thus completing the installation of the filter 11. The structure is simple and the operation is easy, making the maintenance and installation of the filter 11 very convenient.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A self-cleaning tap water pre-treatment filter device, characterized in that: The utility model provides a filter, including filter body and the filter screen (11) that sets up in the inside of filter body, the opposite end of filter screen (11) is provided as circular arc, and the opposite side of filter screen (11) is provided with connecting assembly, and filter screen (11) is connected with filter body through two connecting assemblies, and the inside of filter body is provided with two sliding grooves (14) and two connecting grooves (13), two connecting grooves (13) are communicated with two sliding grooves (14) respectively, and two connecting assemblies are movably arranged in two sliding grooves (14) and two connecting grooves (13) respectively, and the inside of two sliding grooves (14) is further provided with the clamping hole (15) of the clamping of two connecting assemblies, The connecting assembly includes a fixed frame (12), a clamping block (16), a spring (18), and a pushing group. One side of the fixed frame (12) is fixedly connected with one side of the filter screen (11). One side of the clamping block (16) extends into the inside of the fixed frame (12). The side edge of the clamping block (16) away from the fixed frame (12) is provided as a circular arc. The side of the clamping block (16) provided as a circular arc extends into the inside of the clamping hole (15). One end of the clamping block (16) away from the clamping hole (15) is fixedly connected with one end of the spring (18). One end of the spring (18) away from the clamping block (16) is fixedly connected with one side of the inside of the fixed frame (12). The pushing group is arranged on one side of the clamping block (16) and is used for pushing and adjusting the position of the clamping block (16).

2. The self-cleaning tap water pre-treatment filter device of claim 1, wherein: The pushing group includes a pushing plate (19) and a pushing rod (17). One side of the pushing plate (19) is fixedly connected with one side of the clamping block (16). The pushing plate (19) is movably arranged in the movable cavity arranged on one side of the filter screen (11). The upper end of the pushing rod (17) extends into the movable cavity. One end of the pushing rod (17) close to the movable cavity is fixedly connected with the bottom of the pushing plate (19).

3. The self-cleaning tap water pre-treatment filter device of claim 2, wherein: The filter body includes an upper filter body (1), a lower filter body (2), a water inlet pipe (5), a water outlet pipe (4), and a blowdown pipe (6). The upper filter body (1) is arranged above the lower filter body (2). The water inlet pipe (5) is installed on one side of the lower filter body (2). The water outlet pipe (4) is installed on one side of the upper filter body (1). The blowdown pipe (6) is installed at the bottom of the blowdown pipe (6). One end of the blowdown pipe (6) away from the lower filter body (2) is fixedly connected with a blowdown valve (7).

4. The self-cleaning tap water pre-treatment filter device of claim 3, wherein: The adjacent ends of the upper filter body (1) and the lower filter body (2) are each provided with a flange (3). The two flanges (3) are connected by bolts (10).

5. The backwashable tap water pretreatment filter device of claim 4, wherein: The lower filter body (2) is fixedly connected with a sealing ring (9). The sealing ring (9) extends into a sealing groove arranged at the bottom of the upper filter body (1).

6. The backwashable tap water pretreatment filter device according to claim 5, characterized in that: The outer side wall of the lower filter body (2) is fixedly connected with a plurality of support columns (8).

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