Multi-filter intercepting valve with back-flushing function

Abstract

The utility model relates to the field of stop valve discloses a multiple filtration stop valve with backwash function, including flange plate, the rear end outer wall of flange plate is provided with filter equipment, the filter equipment includes the backwash pipe of flange plate rear end outer wall fixed connection, the rear end outer wall bolted connection of backwash pipe has the main part, the rear end outer wall bolted connection of main part has filter tube, the lower surface fixed connection of filter tube has fixed frame, the inner wall of fixed frame is provided with filter frame, the upper end fixed connection of filter frame inner wall has first filter screen. In the utility model, through the second filter screen and first filter screen in backwash pipe and filter tube can carry out multiple filtration, cooperate with turbine blade and can make the cleaning plate rotate, at this moment, extrusion plate extrusion first spring makes the cleaning plate and second filter screen to adhere, can carry out the cleaning of second filter screen, through the mechanism can effectively improve the filtration efficiency.

Description

Technical Field

[0001] This utility model relates to the field of shut-off valves, and in particular to a multi-stage filter shut-off valve with backwashing function. Background Technology

[0002] The multi-stage filter shut-off valve with backwashing function is a high-efficiency device that integrates filtration, shut-off and self-cleaning. It intercepts impurities such as rust and silt in the water through internal multi-stage filter screens to ensure clean water output. The valve body has a compact structure and is easy to operate, which greatly extends the filter cartridge life and reduces maintenance costs. It is an ideal choice for achieving efficient purification and long-term operation in various water supply systems.

[0003] Traditional gate valves generally offer limited protection and maintenance efficiency, and are easily damaged by impacts. Furthermore, traditional multi-filter gate valves with backwashing functions have relatively limited cleaning efficiency, which can negatively impact the filtration performance of the device.

[0004] Therefore, those skilled in the art have provided a multi-stage filter shut-off valve with backwashing function to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a multi-filter shut-off valve with backwashing function. Multiple filtrations can be performed through the backwash pipe and the second and first filter screens in the filter pipe. The turbine blades can rotate the cleaning plate, at which time the squeezing plate squeezes the first spring to make the cleaning plate fit with the second filter screen, thus cleaning the second filter screen. This mechanism can effectively improve the filtration efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A multi-stage filter shut-off valve with backwashing function includes a flange. A filter mechanism is provided on the outer rear wall of the flange. The filter mechanism includes a backwash pipe fixedly connected to the outer rear wall of the flange. A main body is bolted to the outer rear wall of the backwash pipe. A filter pipe is bolted to the outer rear wall of the main body. A fixing frame is fixedly connected to the lower surface of the filter pipe. A filter frame is provided on the inner wall of the fixing frame. A first filter screen is fixedly connected to the upper end of the inner wall of the filter frame. Two second springs are provided inside the filter frame. A first limiting plate is fixedly connected to the end of the second spring away from the filter frame. A limiting protrusion is fixedly connected to the outer wall of the first limiting plate on the side away from the second spring. A limiting frame is provided at the front end of the inner wall of the main body. A first spring is fixedly connected to the inner rear wall of the limiting frame. A squeezing plate is slidably connected to the front end of the inner wall of the limiting frame. A connecting shaft is fixedly connected to the inner wall of the squeezing plate. A cleaning plate and an impact frame are sequentially fixedly connected to the outer front wall of the connecting shaft. A turbine blade is fixedly connected to the rear end of the outer wall of the connecting shaft. The outer wall of the flange is provided with a protective mechanism, which includes a first limiting ring provided on the outer wall of the flange, a protective shell fixedly connected to the outer wall of the first limiting ring, an impact-resistant layer and an inner shell fixedly connected to the inner wall of the protective shell in sequence, a connecting frame fixedly connected to the middle of the inner wall of the inner shell, a second limiting ring fixedly connected to the outer wall of the connecting frame away from the protective shell, and a third limiting ring fixedly connected to the rear end of the outer wall of the inner shell near the backwash pipe. Through the above technical solution, multiple filtrations can be performed through the second and first filter screens in the backwash pipe and filter pipe. The turbine blades can rotate the cleaning plate, at which time the squeezing plate squeezes the first spring to make the cleaning plate fit with the second filter screen, thus cleaning the second filter screen. This mechanism can effectively improve the filtration efficiency. The first filter screen can be quickly disassembled through the snap-fit ​​protrusion and the limiting protrusion. The limiting frame can be quickly disassembled through the rotating groove. The inner shell and impact-resistant layer can effectively protect the device. This mechanism can effectively protect the device and improve the maintenance efficiency of the device.

[0007] Furthermore, a rotating frame is rotatably connected to the upper end of the outer wall of the backwash pipe, and a backwash disc is fixedly connected to the lower end of the outer wall of the rotating frame. The above technical solution allows the second filter screen to be backwashed via the backwashing disc, which effectively improves cleaning efficiency.

[0008] Furthermore, a second filter screen is sleeved on the outer wall of the connecting shaft, and the connecting shaft slides on the inner wall of the limiting frame; The above technical solution allows the connecting shaft to be limited by the limiting bracket, and the second filter screen can be cleaned by the connecting shaft.

[0009] Furthermore, a rotating groove is provided at the front end of the inner wall of the main body, and two limiting blocks are fixedly connected to the outer wall of the limiting frame; The above technical solution provides space for the limit block to rotate through the rotating groove, and also allows the limit block to be limited.

[0010] Furthermore, a pull handle is fixedly connected to the lower surface of the filter frame, two snap-fit ​​protrusions are slidably connected to the inner wall of the fixed frame, a second limiting plate is fixedly connected to the side of the snap-fit ​​protrusion near the limiting protrusion, two cavities are opened inside the filter frame, the second spring is set inside the cavity, and through grooves are opened on both sides of the outer wall of the fixed frame, and the snap-fit ​​protrusion slides inside the through groove. Through the above technical solution, the through groove allows the snap-fit ​​protrusion to move, and the snap-fit ​​protrusion, in conjunction with the snap-fit ​​protrusion, allows the filter frame to be disassembled.

[0011] Furthermore, a stop frame is fixedly connected to the inner wall of the main body, a waterproof pad is fixedly connected to the middle of the upper surface of the stop frame, a stop ring is provided on the upper surface of the waterproof pad, and a rotating handle is fixedly connected to the upper surface of the stop ring. The above technical solution allows the shut-off valve to operate completely via a filter frame, effectively preventing leakage.

[0012] Furthermore, the rotating handle engages with the main body, and the lower surface of the stop ring is in close contact with the waterproof pad; The above technical solution effectively waterproofs the area by tightly fitting the lower surface of the rotating handle to the waterproof pad, and the rotating handle also controls the opening and closing of the shut-off valve.

[0013] Furthermore, the second limiting plate is tightly fitted with the limiting protrusion, the outer wall of the filter frame is tightly fitted with the inner wall of the filter tube, and two bolt fixing plates are fixedly connected to the upper and lower surfaces of the protective shell. The above technical solution allows the protective shell to be fixed with bolted plates, providing effective protection for the device.

[0014] This utility model has the following beneficial effects: 1. The present invention proposes a multi-filter shut-off valve with backwashing function. Through the backwash pipe and the second filter screen and the first filter screen in the filter pipe, multiple filtrations can be performed. With the help of turbine blades, the cleaning plate can be rotated. At this time, the squeezing plate squeezes the first spring to make the cleaning plate fit with the second filter screen, which can clean the second filter screen. This mechanism can effectively improve the filtration efficiency.

[0015] 2. The present invention proposes a multi-filter shut-off valve with backwashing function. The first filter screen can be quickly disassembled by means of snap-fit ​​protrusion and limit protrusion. The limit frame can be quickly disassembled by means of rotating groove. The inner shell and impact-resistant layer can effectively protect the device. The mechanism can effectively protect the device and improve the maintenance efficiency of the device. Attached Figure Description

[0016] Figure 1 An isometric view of a multi-filter shut-off valve with backwashing function proposed in this utility model; Figure 2 This is a schematic diagram of the structure of a multi-stage filter shut-off valve with backwashing function proposed in this utility model. Figure 3 This is a schematic diagram of the protective mechanism in a multi-filter shut-off valve with backwashing function proposed in this utility model; Figure 4 This is an isometric view of the filter mechanism in a multi-filter shut-off valve with backwashing function proposed in this utility model. Figure 5 This is a side sectional view of the filter mechanism in a multi-filter shut-off valve with backwashing function proposed in this utility model. Figure 6 This is a front sectional view of the filter mechanism in a multi-filter shut-off valve with backwashing function proposed in this utility model. Figure 7 This is a schematic diagram of the filter mechanism in a multi-filter shut-off valve with backwashing function proposed in this utility model. Figure 8 This is a schematic diagram of the impact frame in a multi-filter shut-off valve with backwashing function proposed in this utility model. Figure 9 This is a schematic diagram of the filter frame in a multi-filter shut-off valve with backwashing function proposed in this utility model; Figure 10 This is a schematic diagram of the rotating groove in a multi-filter shut-off valve with backwashing function proposed in this utility model.

[0017] Legend: 1. Flange; 2. Protective mechanism; 201. Protective shell; 202. First limiting ring; 203. Second limiting ring; 204. Connecting frame; 205. Bolt fixing plate; 206. Third limiting ring; 207. Inner shell; 208. Impact-resistant layer; 3. Filtering mechanism; 301. Backwash pipe; 302. Main body; 303. Rotating handle; 304. Filter pipe; 305. Fixing frame; 306. Through groove; 307. Backwash plate; 308. Rotating frame; 309. First filter screen; 3010. Filter frame; 3011. Pull handle; 3012. Stop frame; 3013. Stop ring; 3014. Waterproof pad; 3015. Turbine blade; 301 6. First spring; 3017. Limiting frame; 3018. Second filter screen; 3019. Connecting shaft; 3020. Snap-fit ​​protrusion; 3021. First limiting plate; 3022. Cavity; 3023. Impact frame; 3024. Second spring; 3025. Second limiting plate; 3026. Limiting protrusion; 3027. Limiting block; 3028. Cleaning plate; 3029. Extrusion plate; 3030. Rotating groove. Detailed Implementation

[0018] 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.

[0019] One embodiment of this utility model is provided: Reference Figure 2 , Figure 5 and Figure 8 A multi-stage filter shut-off valve with backwashing function includes a flange 1. A filter mechanism 3 is provided on the outer rear wall of the flange 1. The filter mechanism 3 includes a backwash pipe 301 fixedly connected to the outer rear wall of the flange 1. A main body 302 is bolted to the outer rear wall of the backwash pipe 301. A filter pipe 304 is bolted to the outer rear wall of the main body 302. A fixing frame 305 is fixedly connected to the lower surface of the filter pipe 304. A filter frame 3010 is provided on the inner wall of the fixing frame 305. A first filter screen 309 is fixedly connected to the upper end of the inner wall of the filter frame 3010. Second springs 3024 are provided on both sides inside the filter frame 3010. A first limiting plate 3021 is fixedly connected to one end of the filter frame 3010. A limiting protrusion 3026 is fixedly connected to the outer wall of the first limiting plate 3021 away from the second spring 3024. A limiting frame 3017 is provided at the front end of the inner wall of the main body 302. A first spring 3016 is fixedly connected to the inner wall of the rear end of the limiting frame 3017. A pressing plate 3029 is slidably connected to the front end of the inner wall of the limiting frame 3017. A connecting shaft 3019 is fixedly connected to the inner wall of the pressing plate 3029. A cleaning plate 3028 and an impact frame 3023 are fixedly connected to the outer wall of the front end of the connecting shaft 3019 in sequence. A turbine blade 3015 is fixedly connected to the rear end of the outer wall of the connecting shaft 3019. The outer wall of the flange 1 is provided with a protective mechanism 2. The protective mechanism 2 includes a first limiting ring 202 provided on the outer wall of the flange 1. A protective shell 201 is fixedly connected to the outer wall of the first limiting ring 202. An impact-resistant layer 208 and an inner shell 207 are fixedly connected to the inner wall of the protective shell 201 in sequence. A connecting frame 204 is fixedly connected to the middle of the inner wall of the inner shell 207. A second limiting ring 203 is fixedly connected to the outer wall of the connecting frame 204 on the side away from the protective shell 201. A third limiting ring 206 is fixedly connected to the rear end of the outer wall of the inner shell 207 on the side near the backwash pipe 301. Multiple filtrations can be performed through the second filter screen 3018 and the first filter screen 309 in the backwash pipe 301 and filter pipe 304. The turbine blades 3015 can rotate the cleaning plate 3028. At this time, the squeezing plate 3029 squeezes the first spring 3016 to make the cleaning plate 3028 fit with the second filter screen 3018, which can clean the second filter screen 3018. This mechanism can effectively improve the filtration efficiency. The first filter screen 309 can be quickly disassembled by the snap-fit ​​protrusion 3020 and the limiting protrusion 3026. The limiting frame 3017 can be quickly disassembled by the rotating groove 3030. The inner shell 207 and the impact-resistant layer 208 can effectively protect the device. This mechanism can effectively protect the device and improve the maintenance efficiency of the device.

[0020] Reference Figure 7 , Figure 9 and Figure 10 A rotating frame 308 is rotatably connected to the upper end of the outer wall of the backwash pipe 301, and a backwash disc 307 is fixedly connected to the lower end of the outer wall of the rotating frame 308. The second filter screen 3018 can be backwashed through the backwash disc 307. This mechanism can effectively improve the cleaning efficiency. The second filter screen 3018 is sleeved on the outer wall of the connecting shaft 3019. The connecting shaft 3019 slides on the inner wall of the limiting frame 3017. The limiting frame 3017 can limit the connecting shaft 3019. The second filter screen 3018 can be cleaned through the connecting shaft 3019.

[0021] Reference Figure 4 , Figure 5 and Figure 6The front end of the inner wall of the main body 302 is provided with a rotating groove 3030. Two limiting blocks 3027 are fixedly connected to the outer wall of the limiting frame 3017. The rotating groove 3030 can provide space for the limiting blocks 3027 to rotate and can limit the limiting blocks 3027. A pull handle 3011 is fixedly connected to the lower surface of the filter frame 3010. Two snap-fit ​​protrusions 3020 are slidably connected to the inner wall of the fixing frame 305. The snap-fit ​​protrusions 3020 are close to the limiting protrusions. A second limiting plate 3025 is fixedly connected to one side of the filter frame 3010. Two cavities 3022 are opened inside the filter frame 3010. The second spring 3024 is set inside the cavity 3022. Through grooves 306 are opened on both sides of the outer wall of the fixed frame 305. The snap-fit ​​protrusion 3020 slides inside the through groove 306. The snap-fit ​​protrusion 3020 can be moved through the through groove 306, and the filter frame 3010 can be disassembled by cooperating with the snap-fit ​​protrusion 3020.

[0022] Reference Figure 1 , Figure 2 and Figure 3 The inner wall of the main body 302 is fixedly connected to a stop frame 3012. A waterproof pad 3014 is fixedly connected to the middle of the upper surface of the stop frame 3012. A stop ring 3013 is provided on the upper surface of the waterproof pad 3014. A rotating handle 303 is fixedly connected to the upper surface of the stop ring 3013. The filter frame 3010 can make the stop valve operate completely and can effectively prevent the stop valve from leaking. The rotating handle 303 engages with the main body 302. The lower surface of the stop ring 3013 is tightly fitted with the waterproof pad 3014. The tight fit between the lower surface of the rotating handle 303 and the waterproof pad 3014 can effectively waterproof the valve. In addition, the rotating handle 303 can be used to control the opening and closing of the stop valve.

[0023] Reference Figure 2 , Figure 4 and Figure 6 The second limiting plate 3025 is tightly fitted with the limiting protrusion 3026, the outer wall of the filter frame 3010 is tightly fitted with the inner wall of the filter tube 304, and two bolt fixing plates 205 are fixedly connected to the upper and lower surfaces of the protective shell 201. The protective shell 201 can be fixed by the bolt fixing plates 205, providing effective protection for the device.

[0024] Working Principle: When the device is needed, first connect the entire device via a flange, then connect the device to the main pipeline via flange 1. Water then flows through backwash pipe 301, then through main body 302, and finally through filter pipe 304. When passing through backwash pipe 301, the water first passes through backwash plate 307 and then impacts impact frame 3023. At this time, impact frame 3023 squeezes cleaning plate 3028. Cleaning plate 3028, through connecting shaft 3019, cooperates with squeezing plate 3029 to squeeze first spring 3016. At this time, turbine blades 3015 will drive cleaning plate 3028 to scrape the surface of second filter screen 3018. Then, water enters filter pipe 304 through stop frame 3012 in main body 302, and water will pass through first filter screen 309 for secondary filtration. To replace the first filter screen 309 and the second filter screen 3018, press the snap-fit ​​protrusion 3020. The snap-fit ​​protrusion 3020 will press the limiting protrusion 3026 and the second spring 3024. Then, pull the handle 3011 to pull it out. Then, disassemble the main body 302. Then, rotate the second filter screen 3018 to unlock the limiting block 3027 from the rotating groove 3030. The limiting frame 3017 can then be disassembled, and the second filter screen 3018 can be replaced. When backwashing is required, rotate the rotating frame 308. The rotating frame 308 will drive the backwashing disc 307 to rotate, and the second filter screen 3018 can be backwashed. At this time, the protective shell 201 can be fixed by bolt fixing plate 205 and the first limiting ring 202, the second limiting ring 203 and the third limiting ring 206.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-stage filter shut-off valve with backwashing function, comprising a flange (1), characterized in that: A filter mechanism (3) is provided on the outer wall of the rear end of the flange (1). The filter mechanism (3) includes a backwash pipe (301) fixedly connected to the outer wall of the rear end of the flange (1). A main body (302) is bolted to the outer wall of the rear end of the backwash pipe (301). A filter pipe (304) is bolted to the outer wall of the rear end of the main body (302). A fixing frame (305) is fixedly connected to the lower surface of the filter pipe (304). A filter frame (3010) is provided on the inner wall of the fixing frame (305). A first filter screen (309) is fixedly connected to the upper end of the inner wall of the filter frame (3010). Two second springs (3024) are provided inside the filter frame (3010). The second springs (3024) are located away from the filter frame (3010). A first limiting plate (3021) is fixedly connected to one end. A limiting protrusion (3026) is fixedly connected to the outer wall of the first limiting plate (3021) away from the second spring (3024). A limiting frame (3017) is provided at the front end of the inner wall of the main body (302). A first spring (3016) is fixedly connected to the inner wall of the rear end of the limiting frame (3017). An extrusion plate (3029) is slidably connected to the front end of the inner wall of the limiting frame (3017). A connecting shaft (3019) is fixedly connected to the inner wall of the extrusion plate (3029). A cleaning plate (3028) and an impact frame (3023) are fixedly connected to the outer wall of the front end of the connecting shaft (3019) in sequence. A turbine blade (3015) is fixedly connected to the rear end of the outer wall of the connecting shaft (3019). The outer wall of the flange (1) is provided with a protective mechanism (2). The protective mechanism (2) includes a first limiting ring (202) provided on the outer wall of the flange (1). A protective shell (201) is fixedly connected to the outer wall of the first limiting ring (202). An impact-resistant layer (208) and an inner shell (207) are fixedly connected to the inner wall of the protective shell (201) in sequence. A connecting frame (204) is fixedly connected to the middle of the inner wall of the inner shell (207). A second limiting ring (203) is fixedly connected to the outer wall of the connecting frame (204) on the side away from the protective shell (201). A third limiting ring (206) is fixedly connected to the rear end of the outer wall of the inner shell (207) on the side near the backwash pipe (301).

2. The multi-stage filter shut-off valve with backwashing function according to claim 1, characterized in that: The upper end of the outer wall of the backwash pipe (301) is rotatably connected to a rotating frame (308), and the lower end of the outer wall of the rotating frame (308) is fixedly connected to a backwash disc (307).

3. A multi-stage filter shut-off valve with backwashing function according to claim 1, characterized in that: The outer wall of the connecting shaft (3019) is fitted with a second filter screen (3018), and the connecting shaft (3019) slides on the inner wall of the limiting frame (3017).

4. A multi-stage filter shut-off valve with backwashing function according to claim 1, characterized in that: The front end of the inner wall of the main body (302) is provided with a rotating groove (3030), and the outer wall of the limiting frame (3017) is fixedly connected with two limiting blocks (3027).

5. A multi-stage filter shut-off valve with backwashing function according to claim 1, characterized in that: A pull handle (3011) is fixedly connected to the lower surface of the filter frame (3010). Two snap-fit ​​protrusions (3020) are slidably connected to the inner wall of the fixed frame (305). A second limiting plate (3025) is fixedly connected to the side of the snap-fit ​​protrusion (3020) near the limiting protrusion (3026). Two cavities (3022) are opened inside the filter frame (3010). The second spring (3024) is set inside the cavity (3022). Through grooves (306) are opened on both sides of the outer wall of the fixed frame (305). The snap-fit ​​protrusion (3020) slides inside the through groove (306).

6. A multi-stage filter shut-off valve with backwashing function according to claim 1, characterized in that: The inner wall of the main body (302) is fixedly connected to a stop frame (3012), a waterproof pad (3014) is fixedly connected to the middle of the upper surface of the stop frame (3012), a stop ring (3013) is provided on the upper surface of the waterproof pad (3014), and a rotating handle (303) is fixedly connected to the upper surface of the stop ring (3013).

7. A multi-stage filter shut-off valve with backwashing function according to claim 6, characterized in that: The rotating handle (303) engages with the main body (302), and the lower surface of the stop ring (3013) is in close contact with the waterproof pad (3014).

8. A multi-stage filter shut-off valve with backwashing function according to claim 5, characterized in that: The second limiting plate (3025) is in close contact with the limiting protrusion (3026), the outer wall of the filter frame (3010) is in close contact with the inner wall of the filter tube (304), and two bolt fixing plates (205) are fixedly connected to the upper and lower surfaces of the protective shell (201).

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