Regulating valve sealing structure

Abstract

The utility model relates to the technical field of regulating valve assemblies, and discloses a regulating valve sealing structure which comprises a valve body, one end of the valve body is provided with a first connecting port, the other end of the valve body is provided with a second connecting port, the first connecting port and the second connecting port are both communicated with the valve body, and the first connecting port and the second connecting port are both provided with flange plates. A plurality of limiting blocks are arranged on the outer side of the annular plate, a plurality of flange plates are arranged on the outer side of the annular plate, sealing washers are arranged on the flange plates and attached to the flange plates, a plurality of screws are further included, and a plurality of limiting mechanisms distributed in a circumferential array mode are arranged on the annular plate. The sealing washer can be prevented from running out of the installation position, extra operators are not needed to fix the sealing washer in the installation process, and meanwhile the device can be suitable for sealing washers of different sizes.

Description

Technical Field

[0001] This utility model relates to the field of regulating valve assembly technology, and more specifically, to a regulating valve sealing structure. Background Art

[0002] The sealing structure of a control valve typically consists of components such as a valve seat, valve core, and stuffing box. The valve seat and valve core fit tightly together to form a sealing surface, while the stuffing box seals the valve stem to prevent media leakage. A single-seat control valve has only one sealing line, resulting in low leakage, but also high unbalanced force on the valve core. A double-seat control valve has two sealing lines, resulting in higher leakage, but lower unbalanced force. Appropriate sealing materials and structures must be selected based on the medium and temperature.

[0003] A current publication (CN111550568A) discloses an erosion-resistant sealing structure for a regulating valve, specifically comprising a valve body, a valve seat, a valve core, and a sleeve that mates with the valve core. The valve body has a flow channel for media passage, comprising an inflow section, a buffer section, a valve cavity section, and an outflow section. The cross-sectional area of ​​the buffer section is larger than that of the inflow section, valve cavity section, and outflow section. A valve seat is located at the outlet of the valve cavity section. The sleeve is located within the buffer section. The valve core is located within the valve cavity section and the sleeve, with its bottom end positioned at the outlet of the valve cavity section. A sealing surface is formed between the bottom end of the valve core and the valve seat through contact between the bottom end of the valve core and the valve seat. An axially protruding structure is provided at the bottom end of the valve core, protruding from the bottom end of the valve core and located within the valve seat, mates with the valve seat. This invention effectively reduces the direct erosion effect of the media on the valve core sealing surface, protects the integrity of the valve core sealing surface, and extends the service life of the valve core.

[0004] In existing control valve sealing structures, the sealing gaskets need to be manually fixed during installation; otherwise, the gaskets will move out of their installation positions, resulting in low installation efficiency and additional manpower consumption. To address this, we propose a new control valve sealing structure. Utility Model Content

[0005] To overcome the shortcomings of the existing technology, this utility model provides a regulating valve sealing structure, which has the advantages of high installation efficiency and saving manpower.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a regulating valve sealing structure, comprising a valve body, wherein a first connection port is provided at one end of the valve body, and a second connection port is provided at the other end of the valve body, wherein both the first connection port and the second connection port are connected to the valve body, and a flange is provided on both the first connection port and the second connection port.

[0007] Each flange is equipped with a sealing gasket, which is attached to the flange. The flange also includes multiple screws that pass through the sealing gasket and the flange. Both ends of the screws are fitted with threaded sleeves. An annular plate is fitted over the flange and fixedly connected to its outer surface. Multiple limiting mechanisms arranged in a circular array are provided on the annular plate, located outside the sealing gasket. These limiting mechanisms are used to fix the sealing gasket. Each limiting mechanism includes a support block, which is fixedly connected to the annular plate. A movable rod passes through the support block, and a limiting block is fixedly connected to the lower end of the movable rod. One end of the limiting block contacts the sealing gasket, and an elastic element is fixedly connected between the upper end of the movable rod and the support block.

[0008] As a preferred technical solution of this utility model: the contact surface between the limiting block and the sealing gasket is set as an arc surface.

[0009] As a preferred technical solution of this utility model, the contact surface between the limiting block and the sealing gasket is set to a smooth surface.

[0010] As a preferred technical solution of this utility model: a plurality of bent pipes arranged in a circumferential array are fixedly connected to the annular plate, one end of each bent pipe is facing the sealing gasket, a connecting pipe is provided on one side of the annular plate, the connecting pipe is connected to the plurality of bent pipes, and an air pump is fixedly installed on the annular plate, the exhaust end of the air pump is connected to the connecting pipe.

[0011] As a preferred technical solution of this utility model: a gear ring is sleeved and fixedly installed on the outer side of the annular plate, a motor is fixedly installed on the valve body, and a drive wheel is fixedly installed on the output shaft end of the motor, and the drive wheel meshes with the gear ring.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] This invention places a sealing gasket between multiple limiting blocks. The multiple limiting blocks on the outside of the sealing gasket can limit the sealing gasket, preventing it from slipping out of its installation position. Furthermore, no additional personnel are required to fix the sealing gasket during installation. Simultaneously, the limiting blocks can slide along the direction of the movable rod, thereby adjusting the position of the multiple limiting blocks. Sealing gaskets of different diameters can be placed between the multiple limiting blocks, thus the device is suitable for sealing gaskets of various sizes.

[0014] The motor drives the drive wheel to rotate at a certain angle, which in turn drives the gear ring to rotate, which in turn drives the annular plate to rotate. At the same time, the air pump draws in low-temperature air from the outside and introduces it into multiple bends through connecting pipes. The air is then discharged to the surface of the sealing gasket through the multiple bends, which can cool the sealing gasket and blow away the dust on the surface of the sealing gasket. As the annular plate rotates, the multiple bends can cool and remove dust from different positions on the surface of the sealing gasket. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0017] Figure 3 For the present utility model Figure 2 A is an enlarged schematic diagram;

[0018] Figure 4 This is an enlarged side view of a portion of the structure of the annular plate of this utility model.

[0019] In the figure: valve body 1, first connection port 2, second connection port 3, flange 4, sealing gasket 5, screw 6, threaded sleeve 7, annular plate 8, support block 9, movable rod 10, limit block 11, elastic element 12, bend 13, connecting pipe 14, air pump 15, gear ring 16, motor 17, drive wheel 18. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] like Figures 1 to 4As shown, this utility model provides a regulating valve sealing structure, including a valve body 1, a first connection port 2 at one end of the valve body 1, and a second connection port 3 at the other end of the valve body 1. Both the first connection port 2 and the second connection port 3 are connected to the valve body 1, and both the first connection port 2 and the second connection port 3 are provided with flanges 4. Each flange 4 is equipped with a sealing gasket 5, which is attached to the flange 4. It also includes multiple screws 6, which pass through the sealing gasket 5 and the flange 4. Both ends of the screws 6 are fitted with threaded sleeves 7. An annular plate 8 is fitted over the flange 4 and is fixedly connected to the outer side of the flange 4. Multiple limiting mechanisms arranged in a circumferential array are provided on the annular plate 8. These limiting mechanisms are located outside the sealing gasket 5 and are used to fix the sealing gasket 5. Each limiting mechanism includes a support block 9, which is fixedly connected to the annular plate 8. A movable rod 10 passes through the support block 9, and a limiting block 11 is fixedly connected to the lower end of the movable rod 10. One end of the limiting block 11 contacts the sealing gasket 5. An elastic element 12 is fixedly connected between the upper end of the movable rod 10 and the support block 9. By placing the sealing gasket 5 between multiple limiting blocks 11, the multiple limiting blocks 11 on the outside of the sealing gasket 5 can limit the sealing gasket 5, preventing the sealing gasket 5 from running out of the installation position, and no additional operators are required to fix the sealing gasket 5 during installation. At the same time, the limiting blocks 11 can slide along the direction of the movable rod 10, thereby adjusting the position of the multiple limiting blocks 11. Sealing gaskets 5 of different diameters can be placed between the multiple limiting blocks 11, so the device can be used for sealing gaskets 5 of different sizes.

[0022] The contact surfaces of the limiting block 11 and the sealing gasket 5 are designed as arc surfaces, and their shapes match, making it less prone to wobbling during positioning. The contact surfaces of the limiting block 11 and the sealing gasket 5 are designed as smooth surfaces, resulting in less friction between the limiting block 11 and the sealing gasket 5, and making it easier for the limiting block 11 to rotate.

[0023] The annular plate 8 has multiple bends 13 arranged in a circular array, each with one end facing the sealing gasket 5. A connecting pipe 14 is provided on one side of the annular plate 8, connecting to the multiple bends 13. An air pump 15 is fixedly installed on the annular plate 8, and the exhaust end of the air pump 15 is connected to the connecting pipe 14. A gear ring 16 is sleeved and fixedly installed on the outer side of the annular plate 8. A motor 17 is fixedly installed on the valve body 1, and a drive wheel 18 is fixedly installed on the output shaft end of the motor 17, meshing with the gear ring 16.

[0024] The working principle and usage of this utility model are as follows: By placing the sealing gasket 5 between multiple limiting blocks 11, the multiple limiting blocks 11 on the outside of the sealing gasket 5 can limit the sealing gasket 5, preventing it from slipping out of its installation position. Furthermore, no additional personnel are required to fix the sealing gasket 5 during installation. Simultaneously, the limiting blocks 11 can slide along the direction of the movable rod 10, thereby adjusting the position of the multiple limiting blocks 11. Sealing gaskets 5 of different diameters can be placed between the multiple limiting blocks 11, therefore the device is suitable for sealing gaskets 5 of different sizes.

[0025] The motor 17 drives the drive wheel 18 to rotate at a certain angle, which in turn drives the gear ring 16 to rotate, which in turn drives the annular plate 8 to rotate. At the same time, the air pump 15 draws in low-temperature air from the outside and introduces it into multiple bends 13 through the connecting pipe 14. The air is then discharged to the surface of the sealing gasket 5 through the multiple bends 13, which can cool the sealing gasket 5 and blow away the dust on the surface of the sealing gasket 5. As the annular plate 8 rotates, the multiple bends 13 can cool and remove dust from different positions on the surface of the sealing gasket 5.

[0026] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

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

Claims

1. A sealing structure for a regulating valve, comprising a valve body (1), characterized in that: The valve body (1) has a first connection port (2) at one end and a second connection port (3) at the other end. Both the first connection port (2) and the second connection port (3) are connected to the valve body (1). Both the first connection port (2) and the second connection port (3) are provided with flanges (4). Each flange (4) is provided with a sealing gasket (5), which is attached to the flange (4). It also includes multiple screws (6), which pass through the sealing gasket (5) and the flange (4). Both ends of the screws (6) are fitted with threaded sleeves (7). An annular plate (8) is fitted over the flange (4) and is fixedly connected to the outer surface of the flange (4). The annular plate (8) is provided with multiple limiting mechanisms arranged in a circular array. The limiting mechanism is set on the outside of the sealing gasket (5). The limiting mechanism is used to fix the sealing gasket (5). The limiting mechanism includes a support block (9). The support block (9) is fixedly connected to the annular plate (8). A movable rod (10) passes through the support block (9). A limiting block (11) is fixedly connected to the lower end of the movable rod (10). One end of the limiting block (11) is in contact with the sealing gasket (5). An elastic element (12) is fixedly connected between the upper end of the movable rod (10) and the support block (9).

2. The regulating valve sealing structure according to claim 1, characterized in that: The contact surface between the limiting block (11) and the sealing gasket (5) is set as an arc surface.

3. The regulating valve sealing structure according to claim 2, characterized in that: The contact surface between the limiting block (11) and the sealing gasket (5) is set to a smooth surface.

4. The regulating valve sealing structure according to claim 3, characterized in that: Multiple bends (13) arranged in a circular array are fixedly connected to the annular plate (8). One end of each bend (13) is facing the sealing gasket (5). A connecting pipe (14) is provided on one side of the annular plate (8). The connecting pipe (14) is connected to the multiple bends (13). An air pump (15) is fixedly installed on the annular plate (8). The exhaust end of the air pump (15) is connected to the connecting pipe (14).

5. The regulating valve sealing structure according to claim 4, characterized in that: A gear ring (16) is fitted and fixedly installed on the outer side of the annular plate (8). A motor (17) is fixedly installed on the valve body (1). A drive wheel (18) is fixedly installed on the output shaft end of the motor (17). The drive wheel (18) meshes with the gear ring (16).

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