Anti-crystallization hydraulic gate valve

Abstract

The utility model relates to the technical field of valves, in particular to an anti-crystallization hydraulic gate valve. Comprising a valve body main shell, a lower sealing seat, a flashboard and two scraper assemblies. The upper end of the valve body main shell is communicated with an upper end shell; the lower sealing seat is arranged at the bottom end of the inner side of the valve body main shell, and an inclined face is arranged at the upper end of the lower sealing seat. The gate plate is movably arranged on the inner side of the valve body main shell. The two scraper blade assemblies are symmetrically installed on the two sides of the interior of the valve body main shell, each scraper blade assembly comprises a first sealing plate and a second sealing plate, and a bottom plate is arranged below the valve body main shell. According to the technical scheme, impurities in the valve body main shell can be conveniently cleaned, the valve does not need to be closed in the cleaning process, crystalline substances on the inner wall of the valve body main shell and the gate plate can be scraped in the cleaning process, and the crystalline substances are discharged along with the impurities.

Description

Technical Field

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

[0002] A gate valve, also known as a manual knife-type gate valve, is a valve in which the gate and seat maintain close contact and sealing. The principle is that the gate has a circular opening the same size as the standard diameter. The opening and closing of the gate allows the circular opening to completely separate and align with the standard diameter. The advantage of this valve is that the valve body has no grooves in the standard diameter, preventing media from getting stuck or blocked, and it offers full-bore flow characteristics. Its sealing structure can be categorized as either soft or hard seal. Penetrating knife gate valves feature precision construction, excellent workability, and a compact structure. The sealing seat is a movable structure designed with wear protection and automatic compensation features, resulting in a longer lifespan. The valve seat and gate maintain close contact during the closing and opening process, ensuring stable valve opening and closing force and the ability to cut off the medium.

[0003] Chinese patent publication number CN213575655U discloses an anti-crystallization plug-in valve, comprising a valve body, a valve stem, a gate plate, and a handwheel. A valve body channel is provided inside the valve body, the bottom of the valve stem is fixedly connected to the top of the gate plate, and the bottom of the valve stem is fixedly connected to the handwheel. The gate plate is inserted into the valve body channel from top to bottom, and a groove is provided on the circumferential inner wall of the valve body channel, and a sealing ring is installed inside the groove.

[0004] The above-mentioned disclosed patent still has the following technical defects: the scraped impurities will accumulate inside the valve body, which is inconvenient to clean, and the impurities are easily accumulated between the sealing gasket and the gate plate, thereby affecting the sealing performance of the valve. Utility Model Content

[0005] The utility model aims to solve the problems existing in the background technology and propose an anti-crystallization hydraulic gate valve.

[0006] The technical solution of the utility model is an anti-crystallization hydraulic gate valve, comprising:

[0007] The upper end of the valve body main shell is connected to the upper end shell, and the two ends of the valve body main shell are respectively connected to the water inlet pipe and the drain pipe;

[0008] The lower sealing seat is arranged at the bottom end of the inner side of the main shell of the valve body, and the upper end of the lower sealing seat is provided with an inclined surface;

[0009] The gate is movably arranged on the inner side of the main shell of the valve body. A driving assembly for driving the gate to move is installed on the upper end shell. Sealing strips are installed at both ends of the bottom of the gate;

[0010] Two groups of scraper assemblies are symmetrically installed on both sides of the interior of the valve body main shell. Each group of scraper assemblies includes a first sealing plate and a second sealing plate. The first sealing plate is arranged above the second sealing plate. A fixing rod is connected between the first sealing plate and the second sealing plate. The first sealing ring and the second sealing ring are respectively installed on the circumferential sides of the first sealing plate and the second sealing plate. The bottom end of the valve body main shell is opened, and a bottom plate is arranged below the valve body main shell. A first elastic reset assembly is connected between the bottom plate and the valve body main shell. A first sealing gasket is arranged on the upper end surface of the bottom plate. A fixing rod is also connected between the bottom plate and the two second sealing plates.

[0011] Preferably, two cleaning plates are provided on the upper end of the inclined surface of the lower sealing seat, and a second elastic reset component is connected between the two cleaning plates. A mounting groove is provided at the upper end of the lower sealing seat, and a conical block is provided on the inner side of the mounting groove. A push rod is vertically connected to the conical block, and the push rod moves through the lower sealing seat and is connected to a push plate at its bottom end.

[0012] Preferably, the second elastic reset assembly includes a second guide rod, two second springs and two second connecting sliders, wherein the second guide rod is arranged on the inner side of the mounting groove, the two second connecting sliders are respectively connected to the two cleaning plates, the two second connecting sliders are both slidably installed on the second guide rod, and the two second springs are respectively mounted on both ends of the second guide rod.

[0013] Preferably, a transparent observation window is installed on the side of the valve body main shell.

[0014] Preferably, the first elastic reset assembly includes a first guide rod, a first spring and a limit block. The side of the base plate is connected to a fixed block. The first guide rod is vertically arranged on the fixed block. The first connecting slider is connected to the main shell of the valve body. The first connecting slider is slidably arranged on the first guide rod. The limit block is arranged at the upper end of the first guide rod, and the first spring is sleeved on the first guide rod.

[0015] Preferably, a coarse filter is installed on the inner side of the drain pipe.

[0016] Preferably, the drive assembly includes a handwheel and a threaded rod, the threaded rod is rotatably mounted on the inner side of the upper end shell, the threaded rod is threadedly connected to the gate plate, and the end of the threaded rod extends to the outer side of the upper end shell and is connected to the handwheel.

[0017] Compared with the existing technology, the utility model has the following beneficial technical effects: the technical solution can facilitate the cleaning of impurities inside the main shell of the valve body, without closing the valve during the cleaning process, and can scrape off the crystallized material on the inner wall of the main shell of the valve body and the gate plate during the cleaning process, and the crystallized material is discharged together with the impurities. The structure is simple and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 and Figure 2 All of them are structural schematic diagrams of the present utility model.

[0019] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0020] Figure 4 It is a cross-sectional structural diagram of the lower sealing seat in the utility model.

[0021] Figure 5 for Figure 4 Schematic diagram of the local enlarged structure at point A.

[0022] Figure markings: 1. valve body main shell; 2. water inlet pipe; 3. drain pipe; 4. coarse mesh filter; 5. upper end shell; 61. upper sealing plate; 62. lower sealing plate; 7. bottom plate; 701. through hole; 8. lower sealing seat; 801. mounting groove; 9. gate; 10. first sealing plate; 11. second sealing plate; 12. handwheel; 13. sealing strip; 14. fixing rod; 15. transparent observation window; 16. first sealing ring; 17. second sealing ring; 18. first sealing gasket; 19. handle; 20. push rod; 21. push plate; 22. cleaning plate; 231. fixing block; 232. first connecting slider; 24. first guide rod; 25. first spring; 26. limit block; 27. conical block; 28. second guide rod; 29. ​​second spring; 30. second connecting slider; 31. separator block; 32. second sealing gasket; 33. third sealing ring. DETAILED DESCRIPTION

[0023] Example 1

[0024] like Figure 1-Figure 3 As shown, the anti-crystallization hydraulic gate valve proposed in this embodiment includes a valve body main shell 1, a lower sealing seat 8, a gate plate 9 and two sets of scraper assemblies.

[0025] The upper end of the valve body main shell 1 is connected to the upper end shell body 5, the upper end of the valve body main shell 1 is provided with a lower sealing plate 62, the bottom end of the upper end shell body 5 is provided with an upper sealing plate 61, and the upper sealing plate 61 and the lower sealing plate 62 have a detachable connection structure. A second sealing gasket 32 ​​is installed between the lower sealing plate 62 and the lower sealing plate 62 to enhance the sealing of the valve body. The two ends of the valve body main shell 1 are respectively connected to the water inlet pipe 2 and the drain pipe 3; a coarse grid filter 4 is installed on the inner side of the drain pipe 3, and the setting of the coarse grid filter 4 can intercept larger impurities in the water.

[0026] The lower sealing seat 8 is arranged at the bottom end of the inner side of the valve body main shell 1, and the upper end of the lower sealing seat 8 is provided with an inclined surface; the gate plate 9 is movably arranged on the inner side of the valve body main shell 1, and the upper sealing plate 61 and the lower sealing plate 62 are both provided with through holes for the gate plate 9 to pass through. A third sealing ring 33 is installed on the inner side of the through hole of the lower sealing plate 62, and a driving component for driving the gate plate 9 to move is installed on the upper end shell 5. The driving component includes a handwheel 12 and a threaded rod. The threaded rod is rotatably installed on the inner side of the upper end shell 5, and the threaded rod is threadedly connected to the gate plate 9. The end of the threaded rod extends to the outside of the upper end shell 5 and is connected to the handwheel 12. The rotation direction of the threaded rod can be adjusted by the provided handwheel 12, thereby driving the gate plate 9 to move up and down. Sealing strips 13 are installed at both ends of the bottom of the gate plate 9.

[0027] Two groups of scraper assemblies are symmetrically installed on both sides of the interior of the valve body main shell 1. Each group of scraper assemblies includes a first sealing plate 10 and a second sealing plate 11. The first sealing plate 10 is arranged above the second sealing plate 11. A fixing rod 14 is connected between the first sealing plate 10 and the second sealing plate 11. The first sealing plate 10 and the second sealing plate 11 are respectively installed with a first sealing ring 16 and a second sealing ring 17 on the circumference of the first sealing plate 10 and the second sealing plate 11. The bottom end of the valve body main shell 1 is opened. A bottom plate 7 is provided below the valve body main shell 1. A first elastic reset assembly is connected between the bottom plate 7 and the valve body main shell 1. An elastic reset assembly includes a first guide rod 24, a first spring 25 and a limit block 26. The side of the bottom plate 7 is connected to a fixed block 231. The first guide rod 24 is vertically arranged on the fixed block 231. The first connecting slider 232 is connected to the valve body main shell 1. The first connecting slider 232 is slidably arranged on the first guide rod 24. The limit block 26 is arranged at the upper end of the first guide rod 24. The first spring 25 is sleeved on the first guide rod 24. The upper end surface of the bottom plate 7 is provided with a first sealing gasket 18. A fixed rod 14 is also connected between the bottom plate 7 and the two second sealing plates 11.

[0028] In this embodiment, the upper end of the lower sealing seat 8 is provided with an inclined surface, so that impurities inside the valve body main shell 1 are not easily accumulated on the upper end of the lower sealing seat 8, thereby ensuring the sealing between the sealing strip 13 and the lower sealing seat 8; the impurities inside the valve body main shell 1 are accumulated on the second sealing plate 11 under the action of gravity. When cleaning the impurities inside the valve body main shell 1, the handle 19 provided on the bottom plate 7 is pulled downward, which drives the two sets of scraper assemblies to move downward. During this process, the first sealing ring 16 and the second sealing ring 17 can scrape off the crystallized materials on the gate plate 9, the lower sealing seat 8 and the inner wall of the valve body main shell 1 during the movement. The scraped crystallized materials fall onto the second sealing plate 11. When the second sealing plate 11 moves to the position below the opening of the valve body main shell 1, at this time The two first sealing plates 10 move to the two sides of the upper end of the lower sealing seat 8 respectively, thereby realizing the sealing of the upper end cavity of the valve body main shell 1. There is no need to close the valve during the cleaning process. When the second sealing plate 11 moves to the lower position of the valve body main shell 1, the water between the second sealing plate 11 and the first sealing plate 10 is discharged, and the water flow flushes out the impurities on the second sealing plate 11, thereby cleaning the impurities remaining inside the valve body main shell 1. Then, the handle 19 set on the bottom plate 7 is released, and the bottom plate 7 and the two sets of scraper assemblies are driven to reset under the elastic force of the first elastic reset component. The bottom plate 7 re-blocks the bottom end opening of the valve body main shell 1, and the first sealing plate 10 moves to the top position of the gate plate 9, and the second sealing plate 11 moves to the top position of the lower sealing seat 8.

[0029] Example 2

[0030] like Figure 4 and Figure 5As shown, an anti-crystallization hydraulic gate valve proposed in this embodiment, compared with embodiment 1, in this embodiment, two cleaning plates 22 are provided at the upper end of the inclined surface of the lower sealing seat 8, and a partition block 31 is connected to the cleaning plate 22 on one side, so that a gap can be generated between the two cleaning plates 22 for the tip of the tapered block 27 to be inserted, and a second elastic reset component is connected between the two cleaning plates 22, and the second elastic reset component includes a second guide rod 28, two second springs 29 and two second connecting sliders 30, wherein the second guide rod 28 is arranged on the inner side of the mounting groove 801, and the two second connecting sliders 30 are respectively connected to the two cleaning plates 22, and the two second connecting sliders 30 are both slidably mounted on the second guide rod 28. The second spring 29 is respectively sleeved on the two ends of the second guide rod 28, and the upper end of the lower sealing seat 8 is provided with a mounting groove 801, and the inner side of the mounting groove 801 is provided with a conical block 27, and the conical block 27 is vertically connected to the push rod 20, and the push rod 20 movably passes through the lower sealing seat 8 and its bottom end is connected to the push plate 21, and the bottom end of the bottom plate 7 is provided with a through hole 701 for the push plate 21 to pass through, and a sealing rubber ring is provided at the bottom end of the lower sealing seat 8, and the push rod 20 passes through the sealing rubber ring, thereby preventing water leakage from occurring in the gap between the push rod 20 and the lower sealing seat 8; a transparent observation window 15 is installed on the side of the valve body main shell 1. The setting of the transparent observation window 15 enables the operator to easily observe the internal situation of the valve body main shell 1.

[0031] In this embodiment, when cleaning the crystallized material on the top of the lower sealing seat 8, the push plate 21 is pushed upward to drive the push rod 20 to move. The movement of the push rod 20 drives the conical block 27 to move upward. The tip of the conical block 27 is inserted into the gap between the two cleaning plates 22, forcing the two cleaning plates 22 to move away from each other. The two cleaning plates 22 can clean the crystallized material on the top of the lower sealing seat 8 during the movement.

[0032] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. An anti-crystallization hydraulic gate valve, characterized in that: include: A valve body main shell (1), the upper end of the valve body main shell (1) is connected to an upper end shell (5), and the two ends of the valve body main shell (1) are respectively connected to a water inlet pipe (2) and a drain pipe (3); A lower sealing seat (8) is provided at the bottom end of the inner side of the valve body main shell (1), and an upper end of the lower sealing seat (8) is provided with an inclined surface; The gate plate (9) is movably arranged on the inner side of the valve body main shell (1), and a driving component for driving the gate plate (9) to move is installed on the upper end shell (5). Sealing strips (13) are installed at both ends of the bottom of the gate plate (9); Two groups of scraper assemblies are symmetrically installed on both sides of the interior of the valve body main shell (1), and each group of scraper assemblies includes a first sealing plate (10) and a second sealing plate (11). The first sealing plate (10) is arranged above the second sealing plate (11), and a fixing rod (14) is connected between the first sealing plate (10) and the second sealing plate (11). The first sealing ring (16) and the second sealing ring (17) are respectively installed on the peripheral sides of the first sealing plate (10) and the second sealing plate (11). The bottom end of the valve body main shell (1) is opened, and a bottom plate (7) is arranged below the valve body main shell (1). A first elastic reset assembly is connected between the bottom plate (7) and the valve body main shell (1), and a first sealing gasket (18) is arranged on the upper end surface of the bottom plate (7). A fixing rod (14) is also connected between the bottom plate (7) and the two second sealing plates (11).

2. The anti-crystallization hydraulic gate valve according to claim 1, characterized in that: Two cleaning plates (22) are provided on the upper end of the inclined surface of the lower sealing seat (8), and a second elastic reset component is connected between the two cleaning plates (22). A mounting groove (801) is provided on the upper end of the lower sealing seat (8), and a conical block (27) is provided on the inner side of the mounting groove (801). A push rod (20) is vertically connected to the conical block (27). The push rod (20) movably passes through the lower sealing seat (8) and its bottom end is connected to a push plate (21).

3. The anti-crystallization hydraulic gate valve according to claim 2, characterized in that: The second elastic reset assembly includes a second guide rod (28), two second springs (29) and two second connecting sliders (30), wherein the second guide rod (28) is arranged on the inner side of the mounting groove (801), the two second connecting sliders (30) are respectively connected to the two cleaning plates (22), the two second connecting sliders (30) are both slidably mounted on the second guide rod (28), and the two second springs (29) are respectively sleeved on both ends of the second guide rod (28).

4. The anti-crystallization hydraulic gate valve according to claim 2, characterized in that: A transparent observation window (15) is installed on the side of the valve body main shell (1).

5. The anti-crystallization hydraulic gate valve according to claim 1, characterized in that: The first elastic reset assembly includes a first guide rod (24), a first spring (25) and a limit block (26); a fixed block (231) is connected to the side of the bottom plate (7); the first guide rod (24) is vertically arranged on the fixed block (231); the first connecting slider (232) is connected to the valve body main shell (1); the first connecting slider (232) is slidably arranged on the first guide rod (24); the limit block (26) is arranged at the upper end of the first guide rod (24); and the first spring (25) is sleeved on the first guide rod (24).

6. The anti-crystallization hydraulic gate valve according to claim 1, characterized in that: A coarse filter screen (4) is installed on the inner side of the drain pipe (3).

7. The anti-crystallization hydraulic gate valve according to claim 1, characterized in that: The driving assembly includes a hand wheel (12) and a threaded rod, wherein the threaded rod is rotatably mounted on the inner side of the upper end housing (5), the threaded rod is threadedly connected to the gate plate (9), and the end of the threaded rod extends to the outer side of the upper end housing (5) and is connected to the hand wheel (12).

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