Novel flat valve

Abstract

The utility model discloses a novel flat valve, and belongs to the technical field of flat valves. Comprising a main body and a valve plate, the main body comprises a valve shell, a through hole is transversely formed in the valve shell, a sliding cavity is vertically formed in the position, located in the middle of the through hole, of the valve shell, the valve plate slides in the sliding cavity and can partition the through hole, an inserting groove is formed in the position, close to the through hole, of the sliding cavity, the valve plate comprises an inserting plate, and a protruding edge matched with the inserting groove is arranged on the lower edge of the inserting plate. By optimizing the whole structure, a sliding cavity is vertically formed in the portion, located in the middle of a through hole, of a valve shell, an inserting plate slides upwards in the sliding cavity to enable the through hole to be communicated, the valve plate moves downwards to partition the through hole, a protruding edge matched with an inserting groove is arranged on the lower edge of the inserting plate, the inserting groove is formed in the position, close to the through hole, of the sliding cavity, and the protruding edge of the lower edge of the inserting plate can be inserted into the inserting groove. The contact area of the inserting plate and the inner wall of the main body is increased, the concave continuous joint is formed, and the joint is provided with two right-angle turns, so that the sealing stability can be effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of flat plate valves, and more specifically to a novel flat plate valve. Background Art

[0002] A flat plate valve refers to a valve with a flat plate valve plate. Among them, the plug-in valve is a very widely used flat plate valve, mainly used for opening, shutting off or diverting gas or materials in pipeline systems in power plants, smelting, cement, chemical, grain, mining and other industries.

[0003] In the operation of the existing flat valve, in order to cut off the pipeline and achieve the closing effect, the valve plate and the inner wall of the valve body need to be pressed against each other to stabilize it. However, since the abutting position is in vertical contact, the contact area is small. In order to ensure the stable seal, the pressure needs to be increased, which makes the valve plate easily deformed under pressure. In view of this, we propose a new flat valve. Utility Model Content

[0004] 1. Technical solution

[0005] A novel flat valve comprises a main body and a valve plate, wherein the main body comprises a valve shell, the valve shell is horizontally provided with a through hole, the valve shell is vertically provided with a sliding cavity in the middle of the through hole, the valve plate can slide in the sliding cavity to block the through hole, a slot is provided in the sliding cavity adjacent to the through hole, the valve plate comprises a plug plate, and a convex edge cooperating with the slot is provided at the lower edge of the plug plate.

[0006] Preferably, the lower edge of the sliding cavity is arranged lower than the lower edge of the through hole, and the vertical side wall of the plug board is in sliding contact with the vertical side wall of the sliding cavity.

[0007] Preferably, the diameter of the plug plate is larger than the inner diameter of the through hole, the front and rear side walls of the plug plate are provided with vertically arranged guide seats, and the vertical inner wall of the sliding cavity is provided with a guide groove vertically slidably connected with the guide seat.

[0008] Preferably, the valve housing is provided with a through hole at the bottom end of the slot, a dredging pipe is embedded in the through hole, and a plug is detachably installed in the dredging pipe.

[0009] Preferably, two dredging pipes are provided, and the two dredging pipes are installed at two ends of the slot away from each other. A threaded groove is provided in the dredging pipe, and the dredging pipe plug is assembled and connected to the dredging pipe via the threaded groove.

[0010] Preferably, a screw is installed on the top of the plug plate, an adjustment frame is installed on the top of the valve housing, a handle is installed on the top of the adjustment frame, a through hole is opened in the middle of the handle, and a spiral groove cooperating with the screw is opened on the inner wall of the through hole.

[0011] Preferably, a smooth rod is installed between the screw rod and the plug plate, the smooth rod is fixedly connected to the screw rod, and a sealing ring is installed between the smooth rod and the valve housing.

[0012] 2. Beneficial effects:

[0013] 1. Through the optimization of the overall structure, a sliding cavity is vertically arranged in the middle of the through hole of the valve housing, the plug plate slides upward in the sliding cavity to make the through hole conductive, and the valve plate can block the through hole when it moves downward. A convex edge cooperating with the slot is arranged at the lower edge of the plug plate, and a slot is arranged near the through hole in the sliding cavity. The convex edge at the lower edge of the plug plate will be inserted into the slot, thereby increasing the contact area between the plug plate and the inner wall of the main body, and forming a concave continuous seam with two right-angle turns, which can effectively ensure the stability of the seal.

[0014] 2. Through the improvement of the valve shell, a through hole is opened at the bottom of the slot, and the through hole is connected to the slot. When solid debris accumulates inside the slot, the inside of the slot is cleaned through the through hole. A dredging pipe is embedded in the through hole. The dredging pipe is fixed in the through hole without affecting the dredging operation. After the dredging is completed, a detachable plug is installed in the dredging pipe, and the plug can seal the dredging pipe to ensure normal use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the utility model in a cut-away state;

[0017] Figure 3 It is a schematic diagram of the disassembly of the local structure of the utility model;

[0018] Figure 4 It is an enlarged schematic diagram of a part of the structure of the utility model.

[0019] Description of the numbers in the figure:

[0020] The main body 1, the valve housing 11, the sliding cavity 12, the through hole 13, the guide groove 14, the sealing ring 15, the slot 16, the valve plate 2, the screw rod 21, the smooth rod 22, the plug plate 23, the guide seat 24, the convex edge 25, the adjustment frame 3, and the dredging pipe 4. DETAILED DESCRIPTION

[0021] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] This embodiment provides a new type of flat valve. Figure 1 , including a main body 1 and a valve plate 2, the main body 1 is a casting, with a mounting flange on the top, and an adjusting frame 3 is connected to the mounting flange position, wherein the main body 1 includes an integrally cast valve shell 11, the valve shell 11 is horizontally provided with a through hole 13, the through hole 13 is horizontally arranged, and passes through the valve shell 11 from left to right, the valve shell 11 is vertically provided with a sliding cavity 12 in the middle of the through hole 13, the sliding cavity 12 is connected with the through hole 13 from the middle position, and provides an installation space for the valve plate 2, the valve plate 2 is provided with a plug plate 23 and a screw 21 installed on the top of the plug plate 23, and a disc-shaped handle is installed on the top of the adjusting frame 3, a through hole is opened in the middle of the handle, and a spiral groove matching the screw 21 is opened on the inner wall of the through hole, when in use, the plug plate can be driven by rotating the handle via the screw 21 23 slides upward in the sliding cavity 12 to make the through hole 13 conductive, and the space of the sliding cavity 12 above the through hole 13 is not less than the plug plate 23, so that the plug plate 23 can be completely separated from the through hole 13 to ensure smooth conduction. When the handle is reversed, the valve plate 2 moves downward to block the through hole 13. It should be noted that a convex edge 25 cooperating with the slot 16 is provided on the lower edge of the plug plate 23, that is, the bottom end of the valve plate 2 protrudes downward by one end, and a slot 16 is provided near the through hole 13 of the sliding cavity 12. When the through hole 13 is closed, the convex edge 25 on the lower edge of the plug plate 23 will be inserted into the slot 16, thereby increasing the contact area between the plug plate 23 and the inner wall of the main body 1, and forming a concave continuous seam with two right-angle turns, which can effectively ensure the stability of the seal.

[0023] Reference Figure 2 The lower edge of the sliding cavity 12 is set lower than the lower edge of the through hole 13, and the lower end of the sliding cavity 12 is below the through hole 13. When the plug plate 23 moves downward, the vertical side wall of the plug plate 23 can block the through hole 13. At this time, the vertical side wall of the plug plate 23 slides in contact with the vertical side wall of the sliding cavity 12, that is, the position where the plug plate 23 exceeds the diameter of the through hole 13 is in contact with the side wall of the sliding cavity 12, and a contact surface close to an annular shape can be formed, so that a more effective blockage is formed at the intersection of the through hole 13 and the sliding cavity 12, further ensuring the stability of the seal.

[0024] Reference Figure 4The lower part of the plug plate 23 is an approximately semicircular structure, and its diameter is larger than the inner diameter of the through hole 13, so that the through hole 13 can be completely blocked in the blocked state, wherein the front and rear side walls of the plug plate 23 are installed with vertically arranged guide seats 24, and the guide seats 24 protrude from the left and right side walls of the plug plate 23 to form a strip-shaped protrusion, and the vertical inner wall of the sliding cavity 12 is provided with a guide groove 14 vertically slidably connected with the guide seat 24. When the plug plate 23 moves up and down, the guide seat 24 can slide vertically with the guide groove 14 and perform limit guiding to ensure the stable position of the plug plate 23, and form four ninety-degree bends at the contact position between the plug plate 23 and the sliding cavity 12 to ensure the stable sealing between the front and rear sides of the plug plate 23 and the valve housing 11.

[0025] Reference Figure 2 The valve housing 11 is provided with a through hole at the bottom end of the slot 16, and the through hole is communicated with the slot 16. When solid debris accumulates in the slot 16 and causes a poor seal during use, the inside of the slot 16 can be cleaned through the through hole, wherein a dredging pipe 4 is embedded and installed in the through hole, the dredging pipe 4 is fixedly installed in the through hole and has a middle hole, which does not affect the dredging operation. After the dredging is completed, a detachable plug is installed in the dredging pipe 4, and the plug can block the dredging pipe 4 to ensure the normal use of the valve.

[0026] Reference Figure 3 There are two dredging pipes 4, and the two dredging pipes 4 are installed at both ends of the slot 16 away from each other. When cleaning the slot 16, the cleaning agent can be input from one of the dredging pipes 4 and discharged from the other dredging pipe 4, so that the entire internal space of the slot 16 is thoroughly flushed to ensure that the inner wall area of ​​the slot 16 can be completely covered during flushing. In addition, a threaded groove is provided in the dredging pipe 4. When cleaning, the end of the cleaning pipe can be installed with a spiral head and screwed into the dredging pipe 4. High-pressure flushing can prevent the dredging pipe 4 from falling off, and the dredging pipe 4 plug is assembled and connected to the dredging pipe 4 through the threaded groove, which can ensure the stability of the seal during normal use of the valve.

[0027] Reference Figure 3 A smooth rod 22 is installed between the screw 21 and the plug plate 23. The screw 21 is not easy to seal due to its rough outer wall surface. The setting of the smooth rod 22 makes it convenient to seal the top opening of the valve housing 11. During production, the smooth rod 22 is fixedly connected to the screw 21, and the smooth rod 22 can be driven by the screw 21 to move up and down synchronously. Moreover, a sealing ring 15 is installed between the smooth rod 22 and the valve housing 11. The sealing ring 15 can stably slide with the outer wall of the smooth rod 22 to ensure a stable seal and prevent material leakage from the connection position between the main body 1 and the valve plate 2.

[0028] Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A novel flat valve, comprising a main body (1) and a valve plate (2), characterized in that: The main body (1) comprises a valve housing (11), the valve housing (11) is transversely provided with a through hole (13), the valve housing (11) is vertically provided with a sliding cavity (12) located in the middle of the through hole (13), the valve plate (2) can slide in the sliding cavity (12) to block the through hole (13), the sliding cavity (12) is provided with a slot (16) adjacent to the through hole (13), the valve plate (2) comprises a plug plate (23), and a convex edge (25) cooperating with the slot (16) is provided at the lower edge of the plug plate (23).

2. A novel flat plate valve according to claim 1, characterized in that: The lower edge of the sliding cavity (12) is arranged lower than the lower edge of the through hole (13), and the vertical side wall of the inserting plate (23) is in sliding contact with the vertical side wall of the sliding cavity (12).

3. A novel flat plate valve according to claim 2, characterized in that: The diameter of the plug plate (23) is larger than the inner diameter of the through hole (13); the front and rear side walls of the plug plate (23) are provided with vertically arranged guide seats (24); and the vertical inner wall of the sliding cavity (12) is provided with a guide groove (14) vertically slidably connected with the guide seat (24).

4. A novel flat plate valve according to claim 3, characterized in that: The valve housing (11) is provided with a through hole at the bottom end of the slot (16), a dredging pipe (4) is embedded in the through hole, and a cock is detachably installed in the dredging pipe (4).

5. A novel flat plate valve according to claim 4, characterized in that: Two dredging pipes (4) are provided, and the two dredging pipes (4) are installed at two ends of the slot (16) away from each other. A threaded groove is provided in the dredging pipe (4), and the dredging pipe (4) plug is assembled and connected to the dredging pipe (4) via the threaded groove.

6. A novel flat plate valve according to claim 5, characterized in that: A screw rod (21) is installed on the top of the plug plate (23), an adjustment frame (3) is installed on the top of the valve housing (11), a handle is installed on the top of the adjustment frame (3), a through hole is opened in the middle of the handle, and a spiral groove matching with the screw rod (21) is opened on the inner wall of the through hole.

7. A novel flat plate valve according to claim 6, characterized in that: A smooth rod (22) is installed between the screw rod (21) and the plug plate (23), the smooth rod (22) is fixedly connected to the screw rod (21), and a sealing ring (15) is installed between the smooth rod (22) and the valve housing (11).

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