Bypass valve with high sealing performance

Abstract

The utility model discloses a bypass valve with high sealing performance, which relates to the technical field of bypass valves and comprises a bypass valve body and a pipeline body, sealing flanges for connecting the bypass valve body and the pipeline body are fixedly mounted at one end of the bypass valve body and one end of the pipeline body, and the bypass valve further comprises a sealing sleeve. The number of the sealing sleeves is two pairs, the two pairs of sealing sleeves are arranged on the pair of sealing flanges in a sleeving mode, the sealing sleeves make contact with each other, the bypass valve body and the pipeline body are each provided with a pair of mounting columns, each pair of mounting columns are connected through the corresponding sealing sleeve, cavities are formed in the mounting columns, and the sealing sleeves are arranged in the cavities. A plurality of cavities are formed in the bypass valve body, threaded rods are rotationally installed in the cavities, threaded blocks are connected to the threaded rods in a screwed mode, and the threaded blocks are installed in the cavities in a sliding mode, so that the technical problem that in the long-term using process of an existing bypass valve, due to the fact that a connecting bolt is loosened, deviation of the connecting position is likely to be caused, and the leakage risk is caused is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bypass valves, in particular to a high-sealing bypass valve. Background Art

[0002] A bypass valve is a valve installed on the bypass pipe of the water inlet valve pipe section to fill water and balance the water pressure before and after the water inlet valve. For example, pressure reducing valves, control valves and steam traps are usually equipped with bypass pipes. A valve installed on a bypass pipe is called a bypass valve. The term bypass valve refers to a valve installed on a bypass pipe, but does not specifically refer to the valve type and structure. The bypass valve and the pipes on both sides are usually connected by flanges.

[0003] However, during long-term use, the existing bypass valve is prone to displacement of the connection due to loosening of the connection bolts, thereby bringing the risk of leakage. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a high-sealing bypass valve, which solves the technical problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a high-sealing bypass valve, comprising a bypass valve body and a pipeline body, wherein the bypass valve body and one end of the pipeline body are fixedly installed with a sealing flange for connecting the bypass valve body and the pipeline body, and also include a sealing sleeve; the number of the sealing sleeves is two pairs, and the two pairs of sealing sleeves are sleeved on a pair of the sealing flanges, and the sealing sleeves are in contact with each other, and a pair of mounting columns are installed on the bypass valve body and the pipeline body, and each pair of the mounting columns are connected by the sealing sleeve, and a cavity is opened in the mounting columns, and a threaded rod is rotatably installed in the cavity, and a threaded block is screwed on the threaded rod, and the threaded block is slidably installed in the cavity, and a connecting rod is hinged on the threaded block close to the sealing sleeve, and the other end of the connecting rod is hinged to the sealing sleeve.

[0006] Preferably, sleeves are fixedly mounted on the mounting posts on the upper and lower sides of the connecting rod, sliding rods are slidably mounted in the sleeves, and the other ends of the sliding rods are fixedly connected to the sealing sleeves.

[0007] Preferably, a plurality of rollers are rotatably mounted on the inner walls on both the upper and lower sides of the sleeve, and the sliding rod is in contact with the plurality of rollers.

[0008] Preferably, a motor for driving the threaded rod to rotate is fixedly installed in each of the mounting columns.

[0009] Beneficial Effects

[0010] The utility model provides a high-sealing bypass valve, which has the following beneficial effects:

[0011] 1. The sealing flange can be used to connect the bypass valve and the pipeline, the sealing sleeve can be installed to seal the sealing flange, the mounting column can be installed to install a driving component that drives the sealing sleeve to seal more tightly, the threaded rod can be installed, the threaded block can slide in the cavity when the threaded rod rotates, the connecting rod can be hinged, the threaded block can move to drive the connecting rod to swing, and thus drive the sealing sleeve to move, so as to enhance the tightness between a pair of sealing sleeves, and greatly reduce the probability of gas or liquid leakage caused by loose sealing between the sealing flanges;

[0012] 2. By installing the sleeve and the slide rod, the sealing sleeve can be connected and supported to a certain extent, thereby ensuring that the sealing sleeve can move horizontally and a pair of sealing sleeves can be flush with each other to achieve a better sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the internal structure of the utility model;

[0014] Figure 2 for Figure 1 A is an enlarged schematic diagram.

[0015] In the figure: 1. bypass valve body; 2. pipeline body; 3. sealing flange; 4. mounting column; 5. cavity; 6. motor; 7. threaded rod; 8. threaded block; 9. connecting rod; 10. sealing sleeve; 11. sleeve; 12. sliding rod; 13. roller. DETAILED DESCRIPTION

[0016] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention, wherein the directional nouns such as "upper", "lower", etc. mentioned in this document are as follows: Figure 1 The orientation is used as a reference.

[0017] See also Figure 1-2The utility model provides a technical solution: a high-sealing bypass valve, including a bypass valve body 1 and a pipeline body 2. The bypass valve body 1 and one end of the pipeline body 2 are fixedly installed with a sealing flange 3 for connecting the bypass valve body 1 and the pipeline body 2, and also include a sealing sleeve 10; the number of the sealing sleeves 10 is two pairs, the two pairs of sealing sleeves 10 are sleeved on a pair of sealing flanges 3, and the sealing sleeves 10 are in contact with each other. A pair of mounting columns 4 are installed on the bypass valve body 1 and the pipeline body 2, and each pair of mounting columns 4 is connected by the sealing sleeve 10. A cavity 5 is opened in the mounting column 4, and a threaded rod 7 is rotatably installed in the cavity 5. A threaded block 8 is screwed on the threaded rod 7, and the threaded block 8 is slidably installed in the cavity 5. A connecting rod 9 is hinged on the threaded block 8 close to the sealing sleeve 10, and the other end of the connecting rod 9 is hinged to the sealing sleeve 10.

[0018] In this embodiment, the sealing flange 3 can be used to connect the bypass valve and the pipeline, the sealing sleeve 10 can be installed to seal the sealing flange 3, and the mounting column 4 can be used to install a driving component that drives the sealing sleeve 10 to seal more tightly. The threaded rod 7 is installed, and the rotation of the threaded rod 7 can drive the threaded block 8 to slide in the cavity 5. The connecting rod 9 is hinged, and the movement of the threaded block 8 can drive the connecting rod 9 to swing, thereby driving the sealing sleeve 10 to move, so as to enhance the tightness between a pair of sealing sleeves 10, and greatly reduce the probability of gas or liquid leakage due to poor sealing between the sealing flanges 3.

[0019] As an embodiment of the utility model, sleeves 11 are fixedly installed on the mounting columns 4 on the upper and lower sides of the connecting rod 9, and sliding rods 12 are slidably installed in the sleeves 11. The other ends of the sliding rods 12 are fixedly connected to the sealing sleeves 10.

[0020] In this embodiment, the sleeve 11 and the slide rod 12 are installed to connect and support the sealing sleeve 10 to a certain extent, thereby ensuring that the sealing sleeve 10 can translate and a pair of sealing sleeves 10 can be flush with each other to achieve a better sealing effect.

[0021] As an embodiment of the utility model, a plurality of rollers 13 are rotatably mounted on the inner walls of the upper and lower sides of the sleeve 11 , and the slide bar 12 is in contact with the plurality of rollers 13 .

[0022] In this embodiment, by installing the roller 13, the friction between the slide bar 12 and the roller 13 can be greatly reduced, thereby ensuring that the slide bar 12 can move along with the movement of the sealing sleeve 10 when the connecting rod 9 swings.

[0023] As an embodiment of the present utility model, a motor 6 for driving the threaded rod 7 to rotate is fixedly installed in each mounting column 4 .

[0024] In this embodiment, the threaded rod 7 is driven to rotate by installing a motor 6 .

[0025] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and a suitable controller should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0026] The working principle and use process of the utility model are as follows: when in use, the starting motor 6 drives the threaded rod 7 to rotate, thereby driving the threaded block 8 to move in the cavity 5, driving the connecting rod 9 to swing, and then driving the sealing sleeve 10 to move. During this process, the sliding rod 12 slides in the sleeve 11, so that the sealing between the sealing sleeves 10 can be enhanced, thereby ensuring a tight connection between a pair of sealing flanges 3, and effectively preventing leakage caused by loose sealing of the sealing flanges 3.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bypass valve with high sealing performance, comprising a bypass valve body (1) and a pipeline body (2), wherein one end of the bypass valve body (1) and the pipeline body (2) are both fixedly mounted with a sealing flange (3) for connecting the bypass valve body (1) and the pipeline body (2), characterized in that: The invention also comprises a sealing sleeve (10); the sealing sleeves (10) are provided in two pairs, the two pairs of sealing sleeves (10) are sleeved on a pair of sealing flanges (3), the sealing sleeves (10) are in contact with each other, the bypass valve body (1) and the pipeline body (2) are both provided with a pair of mounting posts (4), each pair of mounting posts (4) are connected via the sealing sleeve (10), a cavity (5) is provided in the mounting posts (4), a threaded rod (7) is rotatably installed in the cavity (5), a threaded block (8) is screwed on the threaded rod (7), the threaded block (8) is slidably installed in the cavity (5), a connecting rod (9) is hinged on the threaded block (8) close to the sealing sleeve (10), and the other end of the connecting rod (9) is hinged to the sealing sleeve (10).

2. A high sealing bypass valve according to claim 1, characterized in that: Sleeves (11) are fixedly installed on the installation columns (4) located on the upper and lower sides of the connecting rod (9), and sliding rods (12) are slidably installed in the sleeves (11), and the other ends of the sliding rods (12) are fixedly connected to the sealing sleeves (10).

3. A high sealing bypass valve according to claim 2, characterized in that: A plurality of rollers (13) are rotatably mounted on the inner walls on both the upper and lower sides of the sleeve (11), and the slide bar (12) is in contact with the plurality of rollers (13).

4. A high sealing bypass valve according to claim 1, characterized in that: A motor (6) for driving the threaded rod (7) to rotate is fixedly installed in each of the installation columns (4).

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