Anti-blocking valve

Abstract

The utility model relates to the technical field of valves, in particular to an anti-blocking valve. Comprising a connecting shell with a mounting shell, and the mounting shell is communicated with the inner side of the connecting shell; the flashboard is arranged in an inner cavity communicated with the connecting shell and the mounting shell, and a driving piece used for driving the flashboard to ascend and descend is mounted on the mounting shell; the water inlet connecting pipe and the water outlet connecting pipe are communicated with two ends of the connecting shell; the sealing plate, the sealing ring and the circular ring are arranged on the inner side of the water inlet connecting pipe, the sealing ring is fixed in the water inlet connecting pipe, the sealing plate is arranged on the side close to the gate plate, an elastic reset assembly is connected between the sealing plate and the sealing ring, a fixing rod is fixedly connected to the sealing plate, and a wedge block is fixed to the end of the fixing rod; the circular ring is fixed on the sealing ring and is adjacent to one side of the sealing plate. Under the matching action of the wedge-shaped block, the sealing plate, the sealing ring and the elastic reset assembly, secondary sealing work of the valve can be achieved, and the sealing effect of the valve is good.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an anti-blocking valve. Background Art

[0002] A gate valve refers to a valve whose gate moves vertically along the center line of the pipeline. It can only be fully opened or fully closed in the pipeline and is not suitable for regulating flow. It is widely used in the circulation and cutoff of media such as liquids, gases, and dust.

[0003] A Chinese patent with authorization announcement number CN219176974U discloses a gate valve, which includes a valve housing with a socket, a gate installed in the valve housing, a valve stem rotatably arranged in the socket, and a first sealing ring sleeved on the upper section of the valve stem and abutting against the inner wall of the socket, the gate plate is provided with a six-threaded hole extending downward from its top, the upper section of the valve stem extends upward from the valve housing to connect to a driving device, the outer wall of the lower section of the valve stem is provided with a six-threaded hole, and the lower section of the valve stem is screwed into the six-threaded hole to convert the rotational motion of the valve stem into the linear motion of the gate plate.

[0004] The above-mentioned patent still has the following technical defects: when the gate is closed downward, the provided seal contacts the inner wall of the valve housing to achieve a sealing effect, but only one sealing structure is provided, resulting in weak sealing performance, and the sealing effect still needs to be improved. Utility Model Content

[0005] The utility model aims to provide an anti-clogging valve in view of the problems existing in the background technology.

[0006] The technical solution of the utility model is an anti-clogging valve, comprising a connecting shell with a mounting shell, the mounting shell is connected to the inner side of the connecting shell; a gate, the gate is arranged in an inner cavity connected to the connecting shell and the mounting shell, and a driving member for driving the gate to rise and fall is installed on the mounting shell to adjust the opening and closing of the valve and control the flow output; two sealing rings A arranged on both sides of the gate, the two sealing rings A are respectively fixed on the inner walls of the water inlet connecting pipe and the water outlet connecting pipe, and are used to seal the gate; the water inlet connecting pipe and the water outlet connecting pipe arranged at both ends of the connecting shell are connected; a sealing plate, a sealing ring and a circular ring are arranged on the inner side of the water inlet connecting pipe, wherein the sealing ring is fixed in the water inlet connecting pipe, the sealing plate is arranged on a side adjacent to the gate, an elastic reset component is connected between the sealing plate and the sealing ring, a fixing rod is fixedly connected to the sealing plate, a wedge block is fixed on the end of the fixing rod, the circular ring is fixed on the sealing ring and adjacent to the sealing plate, and a sealing ring C is installed on the circular ring to achieve secondary sealing of the valve body.

[0007] Preferably, it also includes a filter screen, which is installed inside the water inlet connecting pipe; a cleaning shell with an opening at the bottom end, the water inlet connecting pipe movably passes through the cleaning shell, and the water inlet connecting pipe is connected to the inner cavity of the cleaning shell; a sealing strip A and a sealing strip B respectively arranged at the top and middle of the inner cavity of the cleaning shell; a bristle mounting plate with bristles and fixed on the sealing strip A; a sealing strip C arranged at the bottom end of the cleaning shell; two connecting rods that vertically pass through the top of the cleaning shell and are fixedly connected to the sealing strips A, B and C; two springs B respectively mounted on the connecting rods on both sides; and a pressure plate connected between the two connecting rods; two sealing rings B fixed on the cleaning shell and respectively mounted on the connecting rods on both sides.

[0008] Preferably, the driving member includes a screw rod rotatably mounted on the mounting housing and threadably connected to the gate plate, and a hand wheel mounted on the top end of the screw rod.

[0009] Preferably, the elastic reset assembly includes a guide rod fixed on the sealing plate, the end of which movably passes through the sealing ring and is connected to the limit block, and a spring A sleeved on the guide rod.

[0010] Compared with the prior art, the utility model has the following beneficial technical effects: when the gate moves to the bottom end, the gate starts to squeeze the wedge block to move toward the side of the sealing ring, that is, drives the sealing plate to move, and the sealing plate can achieve secondary sealing of the valve body; in summary, the utility model can achieve secondary sealing of the valve under the cooperation of the wedge block, the sealing plate, the sealing ring and the elastic reset component, and its sealing effect is good and its practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model.

[0012] Figure 2 It is a cross-sectional structural diagram of the utility model.

[0013] Figure 3 for Figure 2 Schematic diagram of the local enlarged structure at A.

[0014] Figure numerals: 1. Connecting shell; 2. Installing shell; 301. Water inlet connecting pipe; 302. Water outlet connecting pipe; 4. Cleaning shell; 5. Gate; 6. Screw; 7. Handwheel; 8. Sealing ring A; 9. Wedge block; 10. Fixing rod; 11. Sealing plate; 12. Sealing ring; 13. Ring; 14. Guide rod; 15. Spring A; 16. Limiting block; 17. Filter; 181. Sealing strip A; 182. Sealing strip B; 183. Sealing strip C; 19. Brush mounting plate; 20. Brush; 21. Connecting rod; 22. Spring B; 23. Pressure plate; 24. Sealing ring B; 25. Sealing ring C. DETAILED DESCRIPTION

[0015] Embodiment 1

[0016] like Figure 1-Figure 3 As shown, an anti-clogging valve proposed in this embodiment includes a connecting shell 1 with a mounting shell 2, and the mounting shell 2 is connected to the inner side of the connecting shell 1; it also includes a gate plate 5, the gate plate 5 is arranged in an inner cavity connected to the connecting shell 1 and the mounting shell 2, and a driving member for driving the gate plate 5 to rise and fall is installed on the mounting shell 2 to adjust the opening and closing of the valve and control the flow output, the driving member includes a screw rod 6 rotatably mounted on the mounting shell 2 and threadedly connected to the gate plate 5, and a hand wheel 7 installed at the top of the screw rod 6; it also includes two sealing rings A8 arranged on both sides of the gate plate 5, the two sealing rings A8 are respectively fixed on the inner walls of the water inlet connecting pipe 301 and the water outlet connecting pipe 302, and are used to seal the gate plate 5.

[0017] The water inlet connecting pipe 301 and the water outlet connecting pipe 302 arranged at both ends of the connecting shell 1 are communicated.

[0018] A sealing plate 11, a sealing ring 12 and a circular ring 13 are arranged on the inner side of the water inlet connecting pipe 301, wherein the sealing ring 12 is fixed in the water inlet connecting pipe 301, the sealing plate 11 is arranged on the side adjacent to the gate plate 5, an elastic reset component is connected between the sealing plate 11 and the sealing ring 12, the elastic reset component includes a guide rod 14 fixed on the sealing plate 11 and the end of which movably passes through the sealing ring 12 and is connected to the limiting block 16, and a spring A15 sleeved and installed on the guide rod 14, a fixing rod 10 is fixedly connected to the sealing plate 11, a wedge block 9 is fixed on the end of the fixing rod 10, the circular ring 13 is fixed on the sealing ring 12 and on the side adjacent to the sealing plate 11, and a sealing ring C25 is installed on the circular ring 13 for realizing secondary sealing of the valve body.

[0019] In this embodiment, when the gate plate 5 is driven to move downward, when the gate plate 5 moves to the bottom end, the gate plate 5 begins to squeeze the wedge block 9 to move toward the side of the sealing ring 12, that is, it drives the sealing plate 11 to move, and the sealing plate 11 can realize secondary sealing of the valve body; when the valve is opened, the sealing plate 11 is driven to separate from the sealing ring 12 under the elastic force of the elastic reset component, and the water flow can pass normally at this time; in summary, the utility model can realize the secondary sealing work of the valve under the cooperation of the wedge block 9, the sealing plate 11, the sealing ring 12 and the elastic reset component, and its sealing effect is good and its practicability is strong.

[0020] Embodiment 2

[0021] like Figure 2 and Figure 3As shown, the anti-clogging valve proposed in this embodiment, compared with the first embodiment, also includes a filter 17, the filter 17 is installed inside the water inlet connecting pipe 301; a cleaning shell 4 with an opening at the bottom end, the water inlet connecting pipe 301 movably penetrates the cleaning shell 4, and the water inlet connecting pipe 301 is connected to the inner cavity of the cleaning shell 4; a sealing strip A181 and a sealing strip B182 are respectively arranged at the top and the middle of the inner cavity of the cleaning shell 4; a bristle mounting plate 19 with bristles 20 and fixed on the sealing strip A181; a sealing strip C183 is arranged at the bottom end of the cleaning shell 4; two connecting rods 21 vertically penetrate the top of the cleaning shell 4 and are fixedly connected to the sealing strips A181, B182 and C183; two springs B22 are respectively mounted on the connecting rods 21 on both sides; and a pressure plate 23 connected between the two connecting rods 21; two sealing rings B24 are fixed on the cleaning shell 4 and respectively mounted on the connecting rods 21 on both sides.

[0022] In this embodiment, the filter screen 17 is provided to filter impurities in the valve; the pressure plate 23 is pressed downward to drive the sealing strip A181, the sealing strip B182, the sealing strip C183 and the bristles 20 to move. The bristles 20 can clean the surface of the filter screen 17 during the movement, and the cleaned dirt falls onto the sealing strip B182. When the sealing strip A181 just moves to the bottom end of the water inlet connecting pipe 301, the sealing strip B182 is located at the bottom end of the cleaning shell 4. The pressure plate 23 is continuously pressed. At this time, the sealing strip B182 is separated from the cleaning shell 4, and the sewage is discharged through the bottom end of the cleaning shell 4. At this time, the sealing strip A181 is located at the lower position of the water inlet connecting pipe 301, thereby preventing the water in the valve body from continuously flowing out, and the cleaning process is more convenient.

[0023] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An anti-clogging valve, characterized in that: include: A connecting housing (1) having a mounting housing (2), wherein the mounting housing (2) is in communication with the inner side of the connecting housing (1); The gate plate (5) is arranged in an inner cavity connected to the connecting shell (1) and the mounting shell (2), and a driving member for driving the gate plate (5) to rise and fall is installed on the mounting shell (2) to adjust the opening and closing of the valve and control the flow output; Two sealing rings A (8) are provided on both sides of the gate plate (5), and the two sealing rings A (8) are respectively fixed on the inner walls of the water inlet connecting pipe (301) and the water outlet connecting pipe (302), and are used to seal the gate plate (5); A water inlet connecting pipe (301) and a water outlet connecting pipe (302) provided at both ends of the connecting housing (1) are connected to each other; A sealing plate (11), a sealing ring (12) and a circular ring (13) are arranged on the inner side of a water inlet connecting pipe (301), wherein the sealing ring (12) is fixed in the water inlet connecting pipe (301), the sealing plate (11) is arranged on a side adjacent to the gate plate (5), an elastic reset component is connected between the sealing plate (11) and the sealing ring (12), a fixing rod (10) is fixedly connected to the sealing plate (11), a wedge block (9) is fixed at the end of the fixing rod (10), the circular ring (13) is fixed on the sealing ring (12) and on a side adjacent to the sealing plate (11), and a sealing ring C (25) is installed on the circular ring (13) for achieving secondary sealing of the valve body.

2. The anti-clogging valve according to claim 1, characterized in that: The cleaning device also comprises a filter screen (17) installed inside the water inlet connecting pipe (301); a cleaning shell (4) having an opening at the bottom end, the water inlet connecting pipe (301) movably passing through the cleaning shell (4), and the water inlet connecting pipe (301) communicating with the inner cavity of the cleaning shell (4); a sealing strip A (181) and a sealing strip B (182) respectively arranged at the top and middle of the inner cavity of the cleaning shell (4); a bristle mounting plate (19) having bristles (20) and fixed on the sealing strip A (181); and a cleaning device (10) configured to remove the bristles. A sealing strip C (183) at the bottom end of the cleaning housing (4); two connecting rods (21) vertically penetrating the top end of the cleaning housing (4) and fixedly connected to the sealing strip A (181), the sealing strip B (182) and the sealing strip C (183); two springs B (22) respectively sleeved on the connecting rods (21) on both sides; and a pressure plate (23) connected between the two connecting rods (21); and two sealing rings B (24) fixed on the cleaning housing (4) and respectively sleeved on the connecting rods (21) on both sides.

3. The anti-clogging valve according to claim 1, characterized in that: The driving member comprises a screw rod (6) rotatably mounted on the mounting housing (2) and threadably connected to the gate plate (5), and a hand wheel (7) mounted on the top end of the screw rod (6).

4. The anti-clogging valve according to claim 1, characterized in that: The elastic reset assembly comprises a guide rod (14) fixed on the sealing plate (11) and having an end portion movably passing through the sealing ring (12) and connected to a limit block (16), and a spring A (15) sleeved on the guide rod (14).

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