Flange for connecting sewage valve

Abstract

The utility model relates to the technical field of sewage valves, in particular to a sewage valve connecting flange which comprises a first flange plate and a second flange plate, a first limiting plate is movably connected in the first flange plate, and a lead screw is fixedly connected to the surface of the first limiting plate. The end, away from the first limiting plate, of the lead screw is fixedly connected with a second limiting plate. The first limiting plate and the lead screw are fixedly connected, the lead screw and the second limiting plate are fixedly connected, the second limiting plate and the rotating head are fixedly connected, the first flange plate and the limiting rod are fixedly connected, the lead screw and the protective cover are movably connected, and the protective cover and the outer ring sealing ring are fixedly connected. The protective cover and the inner ring sealing ring are fixedly connected, the rotating head is rotated to drive the lead screw to rotate so that the protective cover can be driven to drive the outer ring sealing ring and the inner ring sealing ring to move, the protective cover covers the bolt and the nut, protection of the bolt and the nut is achieved, and therefore the situation that the bolt is broken or corroded and rusted is reduced.

Description

Technical Field

[0001] This utility model relates to the field of sewage valve technology, specifically to a flange for connecting sewage valves. Background Technology

[0002] Valves are pipeline accessories used to open and close pipelines, control the flow direction, and regulate and control the parameters (temperature, pressure, and flow rate) of the conveyed medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc.

[0003] Valves are control components in fluid transport systems, with functions such as shut-off, regulation, flow guidance, backflow prevention, pressure stabilization, diversion, or overflow pressure relief. Valves used in fluid control systems range from the simplest shut-off valves to various valves used in extremely complex automatic control systems, with a wide variety of types and specifications. Valves and pipelines are usually connected by flanges, also called flange plates or flanges. Flanges are parts that connect shafts to each other and are used for connecting pipe ends. However, existing flanges do not have protective structures, and bolts are usually exposed during use, making them susceptible to corrosion and rust from rainwater or collisions between objects, which can easily cause bolt breakage and damage, and make later maintenance and disassembly of the flange inconvenient. Utility Model Content

[0004] The purpose of this utility model is to provide a flange for connecting sewage valves, so as to solve the problems mentioned in the background art that the existing flanges do not have a protective structure, and the bolts are usually exposed during use. They are susceptible to corrosion and rust from rainwater or collisions between objects, which can easily cause the bolts to break and be damaged, making it inconvenient for later maintenance and disassembly of the flange.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flange for connecting a sewage valve, comprising a first flange and a second flange. A first limiting plate is movably connected inside the first flange. A lead screw is fixedly connected to the surface of the first limiting plate. A second limiting plate is fixedly connected to the end of the lead screw away from the first limiting plate. A rotating head is fixedly connected to the side of the second limiting plate away from the lead screw. A limiting rod is fixedly connected to the surface of the first flange. A protective cover is movably connected to the surface of the lead screw. An outer ring sealing ring is fixedly connected to the surface of the protective cover. An inner ring sealing ring is fixedly connected to the surface of the protective cover. A plug is fixedly connected to the side of the first flange away from the lead screw. A slot is formed on the surface of the second flange. A PP layer is provided on the inner surface of the first flange, and a coating is provided on the inner surface of the PP layer.

[0006] Preferably, the first limiting plate is circular, and the lead screw is movably connected to the first flange through the first limiting plate.

[0007] Preferably, the second limiting plate is in the shape of a circular plate, and the second limiting plate and the rotating head are movably connected to the first flange via a lead screw.

[0008] Preferably, the limiting rod is in the shape of a round rod, the limiting rod passes through the protective cover, and the protective cover is slidably connected to the limiting rod by a lead screw.

[0009] Preferably, both the outer and inner ring sealing rings are circular, and the insert block is conical.

[0010] Preferably, the inserts are symmetrically distributed in two groups on the surface of the first flange, and the slots are symmetrically distributed in two groups on the surface of the second flange.

[0011] Preferably, the slot is a tapered groove, and the PP layer and coating are distributed in two groups on the first flange and the second flange respectively.

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

[0013] 1. Through the fixed connection between the first limiting plate and the lead screw, the fixed connection between the lead screw and the second limiting plate, the fixed connection between the second limiting plate and the rotating head, the fixed connection between the first flange and the limiting rod, the movable connection between the lead screw and the protective cover, the fixed connection between the protective cover and the outer ring sealing ring, and the fixed connection between the protective cover and the inner ring sealing ring, rotating the rotating head drives the lead screw to rotate, which can drive the protective cover to move the outer ring sealing ring and the inner ring sealing ring, so that the protective cover covers the bolts and nuts, thereby protecting the bolts and nuts and reducing the occurrence of bolt breakage or corrosion and rust.

[0014] 2. Through the fixed connection between the first flange and the insert block, the surface of the second flange is provided with a slot. When installing the flange, inserting the insert block into the slot can quickly align the first and second flanges, which is convenient for workers to install the flange quickly. The inner surfaces of the first and second flanges are provided with PP layers, and the inner surface of the PP layers is provided with coatings. The PP layers and coatings can protect the inner surfaces of the first and second flanges, reduce the corrosion of the first and second flanges by sewage, and improve the service life of the first and second flanges. Attached Figure Description

[0015] Figure 1 This is a three-dimensional front view of the structure of this utility model;

[0016] Figure 2 This is a side-view perspective view of the structure of this utility model;

[0017] Figure 3 This is a three-dimensional partial sectional view of the protective mechanism of this utility model;

[0018] Figure 4 This is a partial three-dimensional schematic diagram of the protective cover of this utility model;

[0019] Figure 5 This is an exploded three-dimensional schematic diagram of the alignment mechanism of this utility model;

[0020] Figure 6 This is an exploded three-dimensional schematic diagram of the anti-corrosion mechanism of this utility model.

[0021] In the diagram: 1. First flange; 2. Second flange; 3. First limiting plate; 4. Screw; 5. Second limiting plate; 6. Rotating head; 7. Limiting rod; 8. Protective cover; 9. Outer ring seal; 10. Inner ring seal; 11. Insert block; 12. Slot; 13. PP layer; 14. Coating. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-6 One embodiment provided by this utility model:

[0024] A flange for connecting a sewage valve includes a first flange 1 and a second flange 2. Both the first flange 1 and the second flange 2 have protective mechanisms to protect the bolts and nuts, respectively. A first limiting plate 3 is movably connected inside the first flange 1, limiting the movement of a lead screw 4, preventing it from rotating in place. The lead screw 4 is fixedly connected to the surface of the first limiting plate 3, driving a protective cover 8 to move the outer ring seal 9 and the inner ring seal 10. When protection is needed, the protective cover 8 moves the outer ring seal 9 and the inner ring seal 10 closer to the flange, thus protecting the valve. The protective cover 8 covers the bolts and nuts, providing protection. When installing the flange, the protective cover 8 drives the outer ring seal 9 and inner ring seal 10 away from the flange, facilitating flange installation. A second limiting plate 5 is fixedly connected to the end of the lead screw 4 away from the first limiting plate 3. The second limiting plate 5 protects the protective cover 8, preventing it from detaching from the lead screw 4 and the limiting rod 7. A rotating head 6 is fixedly connected to the side of the second limiting plate 5 away from the lead screw 4, allowing the operator to rotate the lead screw 4. A limiting rod 7 is fixedly connected to the surface of the first flange 1, used for... The current limiting of the protective cover 8 prevents it from rotating with the lead screw 4, ensuring its movement. The protective cover 8 is movably connected to the surface of the lead screw 4. The protective cover 8 covers the bolts and nuts, protecting them and reducing the risk of bolt breakage or corrosion. An outer ring seal 9 and an inner ring seal 10 are fixedly connected to the surface of the protective cover 8. These seals prevent rainwater and dust from entering the protective cover 8 through gaps, thus reducing damage and corrosion to the bolts and nuts. A plug block 11 is fixedly connected to the side of the first flange 1 away from the threaded rod 4. A slot 12 is opened on the surface of the second flange 2. The plug block 11 and the slot 12 are used to realize the quick alignment of the first flange 1 and the second flange 2, which facilitates the quick installation of the flanges by the workers. A PP layer 13 is provided on the inner surface of the first flange 1, and a coating 14 is provided on the inner surface of the PP layer 13. The PP layer 13 and the coating 14 are used to protect the inner surfaces of the first flange 1 and the second flange 2, reduce the corrosion of the first flange 1 and the second flange 2 by sewage, and improve the service life of the first flange 1 and the second flange 2.

[0025] Furthermore, both the first flange 1 and the second flange 2 have protective mechanisms to protect the bolts and nuts respectively. The first limiting plate 3 is circular and is used to limit the screw 4, so that the screw 4 can only rotate in place. The screw 4 is movably connected to the first flange 1 through the first limiting plate 3. The screw 4 is used to drive the protective cover 8 to move the outer ring sealing ring 9 and the inner ring sealing ring 10. When protection is needed, the protective cover 8 is driven to move the outer ring sealing ring 9 and the inner ring sealing ring 10 closer to the flange, so that the protective cover 8 covers the bolts and nuts, thereby protecting the bolts and nuts. When installing the flange, the protective cover 8 is driven to move the outer ring sealing ring 9 and the inner ring sealing ring 10 away from the flange, making it easier for the staff to install the flange.

[0026] Furthermore, the second limiting plate 5 is in the shape of a circular plate. The second limiting plate 5 and the rotating head 6 are movably connected to the first flange 1 through the lead screw 4. The second limiting plate 5 is used to protect the protective cover 8 and prevent the protective cover 8 from detaching from the lead screw 4 and the limiting rod 7. The rotating head 6 is used to facilitate the operator to rotate the lead screw 4.

[0027] Furthermore, the limiting rod 7 is round and passes through the protective cover 8. The limiting rod 7 is used to limit the protective cover 8 so that the protective cover 8 will not rotate with the rotation of the lead screw 4, thus ensuring that the protective cover 8 can move. The protective cover 8 is slidably connected to the lead screw 4 and the limiting rod 7. The protective cover 8 is used to cover the bolts and nuts to protect them, thereby reducing the occurrence of bolt breakage or corrosion and rust.

[0028] Furthermore, both the outer ring seal 9 and the inner ring seal 10 are circular. The outer ring seal 9 and the inner ring seal 10 are used to prevent rainwater and dust from entering the protective cover 8 through the gaps, thereby reducing the damage and corrosion to the bolts and nuts. The insert block 11 is conical in shape.

[0029] Furthermore, the insert blocks 11 are symmetrically distributed in two sets on the surface of the first flange 1, and the slots 12 are symmetrically distributed in two sets on the surface of the second flange 2. The insert blocks 11 and slots 12 are used to achieve quick alignment of the first flange 1 and the second flange 2, which facilitates the quick installation of the flange by the workers.

[0030] Furthermore, the slot 12 is a tapered groove, and the PP layer 13 and coating 14 are distributed in two sets on the first flange 1 and the second flange 2 respectively. The PP layer 13 and coating 14 are used to protect the inner surfaces of the first flange 1 and the second flange 2, reduce the corrosion of the first flange 1 and the second flange 2 by sewage, and improve the service life of the first flange 1 and the second flange 2.

[0031] Working principle: Rotating the rotating head 6 drives the lead screw 4 to rotate, which in turn drives the protective cover 8 to move the outer ring seal 9 and the inner ring seal 10, so that the protective cover 8 covers the bolt and nut, thereby protecting the bolt and nut and reducing the occurrence of bolt breakage or corrosion and rust.

[0032] When installing the flange, inserting the insert block 11 into the slot 12 can quickly align the first flange 1 and the second flange 2, making it easy for workers to install the flange quickly. The PP layer 13 and coating 14 can protect the inner surfaces of the first flange 1 and the second flange 2, reduce the corrosion of the first flange 1 and the second flange 2 by sewage, and improve the service life of the first flange 1 and the second flange 2.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A flange for connecting a sewage valve, comprising a first flange (1) and a second flange (2), characterized in that: The first flange (1) is internally connected to a first limiting plate (3), and a screw rod (4) is fixedly connected to the surface of the first limiting plate (3). A second limiting plate (5) is fixedly connected to the end of the screw rod (4) away from the first limiting plate (3). A rotating head (6) is fixedly connected to the side of the second limiting plate (5) away from the screw rod (4). A limiting rod (7) is fixedly connected to the surface of the first flange (1). A protective cover (8) is movably connected to the surface of the screw rod (4). An outer ring sealing ring (9) is fixedly connected to the surface of the protective cover (8). An inner ring sealing ring (10) is fixedly connected to the surface of the protective cover (8). A plug block (11) is fixedly connected to the side of the first flange (1) away from the screw rod (4). A slot (12) is opened on the surface of the second flange (2). A PP layer (13) is provided on the inner surface of the first flange (1). A coating (14) is provided on the inner surface of the PP layer (13).

2. The flange for connecting a sewage valve according to claim 1, characterized in that: The first limiting plate (3) is in the shape of a circular plate, and the lead screw (4) is movably connected to the first flange (1) through the first limiting plate (3).

3. The flange for connecting a sewage valve according to claim 1, characterized in that: The second limiting plate (5) is in the shape of a circular plate, and the second limiting plate (5) and the rotating head (6) are movably connected to the first flange (1) through the lead screw (4).

4. A flange for connecting a sewage valve according to claim 1, characterized in that: The limiting rod (7) is in the shape of a round rod and passes through the protective cover (8). The protective cover (8) is slidably connected to the limiting rod (7) through the lead screw (4).

5. A flange for connecting a sewage valve according to claim 1, characterized in that: The outer ring seal (9) and the inner ring seal (10) are both circular, and the insert (11) is conical.

6. A flange for connecting a sewage valve according to claim 1, characterized in that: The inserts (11) are symmetrically distributed in two groups on the surface of the first flange (1), and the slots (12) are symmetrically distributed in two groups on the surface of the second flange (2).

7. A flange for connecting a sewage valve according to claim 1, characterized in that: The slot (12) is a tapered groove, and the PP layer (13) and coating (14) are distributed in two groups on the first flange (1) and the second flange (2), respectively.

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