Sealing structure suitable for large flange

Abstract

The utility model relates to the technical field of sealing structures, in particular to a sealing structure suitable for a large flange, which comprises a main body mechanism, a functional mechanism, connecting mechanisms and sealing mechanisms, the functional mechanism is positioned in the main body mechanism, the connecting mechanisms are positioned at two ends of the main body mechanism, and the sealing mechanisms are positioned at two ends of the main body mechanism. The valve body rotating shaft at the bottom end and the high-hardness valve body control pipeline are controlled to be opened and closed by screwing the long-handle switch, and the flow guide stabilizing seat and the valve body stabilizing shaft are used for limiting the high-hardness valve body from moving under the impact of water flow and the like. When the flanges need to be connected, fixing bolts penetrate through the connecting hole positions to connect the connecting pipeline and the sealing flange body, then the connecting pipeline and the sealing flange body are reinforced through fastening nuts, and the sealing performance of the sealing flange body and the connecting pipeline is enhanced through an internal flange sealing ring. Sealing rubber rings are arranged at the two ends of the flange sealing ring, and the sealing rubber rings at the two ends are tightly attached to the internal sealing pipe limiting ring and the connecting limiting block during installation to guarantee the sealing performance.

Description

TECHNICAL FIELD

[0001] The utility model relates to sealing structure technical field, concretely is a kind of sealing structure suitable for large flange. BACKGROUND

[0002] Flange, also known as flange flange or lug. Flange is the connecting part between shaft and shaft, used for the connection between pipe ends;Also used on the flange of equipment inlet and outlet, used for the connection between two devices, such as reducer flange. Flange connection or flange joint is a combined sealing structure composed of flange, gasket and bolt. Flange is the flange used in pipe fitting, and is used on the flange of equipment. There are holes in the flange, and the bolt makes the two flanges tightly connected. The flanges are sealed by gasket. Flange is divided into threaded flange, welded flange and clamping flange. Flanges are used in pairs, and threaded flanges can be used for low-pressure pipes. Welded flanges are used for pressures above 4 kg. The sealing gasket is added between the two flange plates, and then the bolt is tightened. The thickness of the flange is different for different pressures, and the bolts used are also different. When connected with pipes, the local parts of these equipment are also made into corresponding flange shape, also known as flange connection. Any connecting part that uses bolts to connect the periphery of two planes and is sealed at the same time is generally called "flange", such as the connection of ventilation pipes. This kind of parts can be called "flange parts". However, this connection is only a part of a device, such as the connection of flange and water pump, which is not easy to call "flange parts". Small devices such as valves can be called "flange parts".

[0003] The sealing structure of the flange disclosed in the authorized announcement No. CN221525854U discloses a sealing structure of flange, relating to the technical field of sealing structure, comprising a sealing flange body, a runner is fixedly installed on the upper surface of the sealing flange body, a connecting pipeline is fixedly installed on the right side of the sealing flange body, a threaded rod is fixedly connected to the lower surface of the runner, and the outer wall of the threaded rod is movably sleeved with the inner cavity of the sealing flange body. The utility model discloses a sealing ring one, which seals the inner cavity of the sealing flange body. By rotating the runner, the threaded rod fixedly connected to the lower surface of the runner rotates under the action of the steel ball, so that the hemispheres sleeved on the outer wall of the threaded rod move upward under the action of the sealing plate. The inner cavity space of the sealing flange body is reduced by the action of the hemispheres and the hemispheres moving in the opposite direction, so as to control the water flow, thereby achieving the purpose of controlling the water flow according to the demand. However, in the process of use, the sealing structure is not suitable for large flange, and the operation of the runner valve is poor. Therefore, we propose a sealing structure suitable for large flange, which solves the problems of traditional flange sealing structure not suitable for large flange and poor operation of runner valve. UTILITY MODEL CONTENT

[0004] The purpose of this invention is to provide a sealing structure suitable for large flanges, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A sealing structure suitable for large flanges includes a main body, a functional body, a connecting body, and a sealing body. The functional body is located inside the main body, the connecting body is located at both ends of the main body, and the sealing body is located at both ends of the main body. The main body includes a sealing flange body, a valve fixing block, an auxiliary fixing block, and an internal sealing tube limiting ring. The sealing flange body is fixedly disposed at the bottom end of the valve fixing block, the auxiliary fixing block is fixedly disposed at the top end of the valve fixing block, and the internal sealing tube limiting ring is fixedly disposed inside the sealing flange body. The sealing body includes a flange sealing ring, a sealing rubber ring, a reinforcing sealing ring, and a connecting limiting block. The flange sealing ring is disposed at both ends of the sealing flange body, and the sealing rubber ring is fixedly disposed at both ends of the flange sealing ring.

[0007] Preferably, the functional mechanism includes a high-hardness valve body, a flow guide stabilizing seat, a valve body stabilizing shaft, a valve body rotating shaft, and a long-handle switch. The high-hardness valve body is disposed inside the sealing flange body, the flow guide stabilizing seat is fixedly disposed inside the sealing flange body, and the valve body stabilizing shaft is fixedly disposed at the bottom end of the high-hardness valve body.

[0008] Preferably, the connecting mechanism includes a connecting pipe, a connecting hole, a fixing bolt, and a fastening nut. The connecting pipe is located on one side of the sealing flange body, and the connecting hole is located at one end of the connecting pipe.

[0009] Preferably, the valve body rotating shaft is fixedly mounted on the top of the high-hardness valve body, and the long-handle switch is fixedly mounted on the top of the valve body rotating shaft.

[0010] Preferably, the fixing bolt is disposed inside the connecting hole, and the fastening nut is disposed on one side and is connected to the fixing bolt by a thread.

[0011] Preferably, the reinforcing sealing ring is fixedly disposed in the middle of the flange sealing ring, and the connecting limiting block is fixedly disposed inside the connecting pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This is a sealing structure suitable for large flanges. The valve body rotation shaft at the bottom is controlled by turning the long handle switch, and the valve body controls the opening and closing of the pipeline. The flow guide stabilizer and valve body stabilizer are used to limit the movement of the high-hardness valve body caused by water flow and other impacts. When the flange needs to be connected, the connecting pipe is connected to the sealing flange body by passing through the connection hole with fixing bolts, and then the connection is reinforced by tightening nuts.

[0014] 2. This sealing structure is suitable for large flanges. The sealing flange body and the connecting pipe are reinforced by an internal flange sealing ring. The flange sealing ring is equipped with sealing rubber rings at both ends. During installation, the sealing rubber rings at both ends will fit tightly with the internal sealing pipe limiting ring and the connecting limiting block to ensure sealing. The reinforcing sealing ring in the middle of the flange sealing ring has a certain degree of adhesion, which can ensure that it can fit the sealing flange body and the connecting pipe to further enhance the sealing performance. The flange sealing ring is inexpensive and easy to install, making it more suitable for large flange structures. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the sealing flange body of this utility model;

[0018] Figure 4 This is a schematic diagram of the flange sealing ring of this utility model;

[0019] In the diagram: 100, sealing flange body; 101, valve fixing block; 102, auxiliary fixing block; 103, internal sealing pipe limiting ring; 200, high-hardness valve body; 201, flow guide stabilizer; 202, valve body stabilizing shaft; 203, valve body rotating shaft; 304, long-handle switch; 300, connecting pipe; 301, connecting hole; 302, fixing bolt; 303, fastening nut; 400, flange sealing ring; 401, sealing rubber ring; 402, reinforced sealing ring; 403, connecting limiting block. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-4As shown, this utility model provides a technical solution:

[0022] A sealing structure suitable for large flanges includes a main body, a functional body, a connecting body, and a sealing body. The functional body is located inside the main body, the connecting body is located at both ends of the main body, and the sealing body is located at both ends of the main body. The main body includes a sealing flange body 100, a valve fixing block 101, an auxiliary fixing block 102, and an internal sealing tube limiting ring 103. The sealing flange body 100 is fixedly disposed at the bottom end of the valve fixing block 101, the auxiliary fixing block 102 is fixedly disposed at the top end of the valve fixing block 101, and the internal sealing tube limiting ring 103 is fixedly disposed inside the sealing flange body 100. The sealing body includes a flange sealing ring 400, a sealing rubber ring 401, a reinforcing sealing ring 402, and a connecting limiting block 403. The flange sealing ring 400 is disposed at both ends of the sealing flange body 100, and the sealing rubber ring 401 is fixedly disposed at both ends of the flange sealing ring 400.

[0023] In this example, preferably, the functional mechanism includes a high-hardness valve body 200, a flow guide stabilizing seat 201, a valve body stabilizing shaft 202, a valve body rotating shaft 203, and a long-handle switch 204. The high-hardness valve body 200 is disposed inside the sealing flange body 100, the flow guide stabilizing seat 201 is fixedly disposed inside the sealing flange body 100, and the valve body stabilizing shaft 202 is fixedly disposed at the bottom end of the high-hardness valve body 200.

[0024] In this example, preferably, the connecting mechanism includes a connecting pipe 300, a connecting hole 301, a fixing bolt 302, and a fastening nut 303. The connecting pipe 300 is disposed on one side of the sealing flange body 100, and the connecting hole 301 is opened at one end of the connecting pipe 300.

[0025] In this example, preferably, the valve body rotating shaft 203 is fixedly mounted on the top of the high-hardness valve body 200, and the long-handle switch 204 is fixedly mounted on the top of the valve body rotating shaft 203.

[0026] In this example, preferably, the fixing bolt 302 is disposed inside the connecting hole 301, and the fastening nut 303 is disposed on one side and is connected to the fixing bolt 302 by a thread.

[0027] In this example, preferably, the reinforcing sealing ring 402 is fixedly disposed in the middle of the flange sealing ring 400, and the connecting limiting block 403 is fixedly disposed inside the connecting pipe 300.

[0028] In this embodiment, a sealing structure suitable for large flanges is used by turning the long-handle switch 204 to control the valve body rotation shaft 203 at the bottom and the high-hardness valve body 200 to control the opening and closing of the pipeline. The flow guide stabilizer 201 and the valve body stabilizer shaft 202 are used to limit the movement of the high-hardness valve body 200 caused by water flow and other impacts. When the flange needs to be connected, the fixing bolts 302 are used to pass through the connection hole 301 to connect the connecting pipeline 300 and the sealing flange body 100, and then the connection is reinforced by tightening the nuts 303.

[0029] The sealing flange body 100 and the connecting pipe 300 are reinforced with an internal flange sealing ring 400. The flange sealing ring 400 is equipped with sealing rubber rings 401 at both ends. During installation, the sealing rubber rings 401 at both ends will fit tightly with the internal sealing pipe limiting ring 103 and the connecting limiting block 403 to ensure sealing. The reinforcing sealing ring 402 in the middle of the flange sealing ring 400 has a certain degree of adhesion, which can ensure that it can fit the sealing flange body 100 and the connecting pipe 300 to further enhance the sealing performance. The flange sealing ring 400 is inexpensive and easy to install, making it more suitable for large flange structures.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sealing structure suitable for large flanges, comprising a main body mechanism, a functional mechanism, a connecting mechanism, and a sealing mechanism, characterized in that: The functional mechanism is located inside the main body, the connecting mechanism is located at both ends of the main body, and the sealing mechanism is located at both ends of the main body. The main body includes a sealing flange body (100), a valve fixing block (101), an auxiliary fixing block (102), and an internal sealing tube limiting ring (103). The sealing flange body (100) is fixedly installed at the bottom end of the valve fixing block (101), the auxiliary fixing block (102) is fixedly installed at the top end of the valve fixing block (101), and the internal sealing tube limiting ring (103) is fixedly installed inside the sealing flange body (100). The sealing mechanism includes a flange sealing ring (400), a sealing rubber ring (401), a reinforcing sealing ring (402), and a connecting limiting block (403). The flange sealing ring (400) is disposed at both ends of the sealing flange body (100), and the sealing rubber ring (401) is fixedly disposed at both ends of the flange sealing ring (400). During installation, the sealing rings at both ends of the flange sealing ring (400) will fit tightly against the internal sealing tube limiting ring (103) and the connecting limiting block (403).

2. The sealing structure suitable for large flanges according to claim 1, characterized in that: The functional mechanism includes a high-hardness valve body (200), a flow guide stabilizer (201), a valve body stabilizing shaft (202), a valve body rotating shaft (203), and a long-handle switch (204). The high-hardness valve body (200) is disposed inside the sealing flange body (100), the flow guide stabilizer (201) is fixedly disposed inside the sealing flange body (100), and the valve body stabilizing shaft (202) is fixedly disposed at the bottom end of the high-hardness valve body (200).

3. A sealing structure suitable for large flanges according to claim 1, characterized in that: The connection mechanism includes a connecting pipe (300), a connecting hole (301), a fixing bolt (302), and a fastening nut (303). The connecting pipe (300) is located on one side of the sealing flange body (100), and the connecting hole (301) is located at one end of the connecting pipe (300).

4. A sealing structure suitable for large flanges according to claim 2, characterized in that: The valve body rotating shaft (203) is fixedly installed at the top of the high-hardness valve body (200), and the long-handle switch (204) is fixedly installed at the top of the valve body rotating shaft (203).

5. A sealing structure suitable for large flanges according to claim 3, characterized in that: The fixing bolt (302) is located inside the connecting hole (301), and the fastening nut (303) is located on one side and is connected to the fixing bolt (302) by a thread.

6. A sealing structure suitable for large flanges according to claim 1, characterized in that: The reinforcing sealing ring (402) is fixedly installed in the middle of the flange sealing ring (400), and the connecting limiting block (403) is fixedly installed inside the connecting pipe (300).

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