Baffle valve

Abstract

The baffle valve comprises a valve body, a valve cover, an adjusting handle, a valve rod and a valve element, an inlet flow channel and an outlet flow channel are formed in the valve body, the valve cover is installed on the valve body, the adjusting handle is connected with the valve element and arranged in the valve body in a sealing fit mode, the adjusting handle is connected with the valve rod and installed on the valve body, and a first pressure relief assembly is arranged on the valve body. A second pressure relief assembly is arranged on the valve element, the first pressure relief assembly comprises a first sealing ring and a plurality of first pressure relief openings, the first sealing ring is embedded in the position, close to one side of the valve deck, of the valve body, the valve element is pressed on the first sealing ring, and the first pressure relief openings are formed in the inner circumferential face of the valve body and communicate with the first sealing ring. The second pressure relief assembly comprises a second sealing ring and a second pressure relief opening, the second sealing ring is formed in the position, close to one side of the inlet flow channel, of the valve element, the second pressure relief opening is formed in the valve element and communicates with the second sealing ring, and the problem that the sealing ring is inconvenient to disassemble after negative pressure is generated in the using process is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, and particularly relates to a baffle valve. Background Technique

[0002] The baffle valve is an element used to regulate the air flow rate and cut off or connect pipelines in a vacuum system. The vacuum baffle valve uses compressed air as power, changes the air path direction through an electromagnetic reversing valve, and the actuator cylinder drives the baffle valve to open and close. When the existing vacuum baffle valve is in use, it usually needs to be sealed and matched with a sealing ring and a valve core. The existing technology uses the method of embedding the sealing ring in a sealing groove for installation. This type of installation method will cause the sealing ring to generate negative pressure with the fluid after being contaminated, resulting in difficulties in later disassembly, and it is easy to scratch and damage the sealing groove, leading to the problem of sealing failure. Content of the Utility Model

[0003] Aiming at the above problems, the utility model provides a baffle valve, which can prevent the problem of damaging the sealing groove during disassembly due to the generation of negative pressure when the sealing ring is used.

[0004] To achieve the above object, the utility model provides the following technical solution: A baffle valve, including a valve body, a valve cover, an adjusting handle, a valve rod and a valve core. An inlet flow channel and an outlet flow channel are provided on the valve body. The valve cover is installed on the valve body. The adjusting handle is connected to the valve core and is hermetically arranged in the valve body. The adjusting handle is connected to the valve rod and is installed on the valve body. A first pressure relief component is arranged on the valve body, and a second pressure relief component is arranged on the valve core. The first pressure relief component includes a first sealing ring and a plurality of first pressure relief openings. The first sealing ring is embedded on the valve body close to the valve cover side. One end of the valve core is pressed between the first sealing ring and the valve cover. The plurality of first pressure relief openings are opened on the inner peripheral surface of the valve body and communicated to the first sealing ring. The second pressure relief component includes a second sealing ring and a second pressure relief opening. The second sealing ring is opened on the valve core close to the inlet flow channel side. The second pressure relief opening is opened on the valve core and communicated to the second sealing ring.

[0005] Preferably, a first positioning step is arranged on the valve body close to the valve cover side, and a first positioning boss adapted to the first positioning step is convexly arranged on the valve cover.

[0006] Preferably, a second positioning step is arranged on one side of the first positioning step. A U-shaped sealing groove is arranged on the second positioning step. The first sealing ring is embedded in the U-shaped sealing groove. The valve core is provided with a supporting flange, and the supporting flange is clamped between the first positioning boss and the first sealing ring.

[0007] Preferably, the first pressure relief openings are arranged in an annular array on one side of the inner peripheral surface of the U-shaped sealing groove, and one side of the first pressure relief openings is communicated with the valve body.

[0008] Preferably, an annular sealing groove is formed at the bottom of the valve core, and the second sealing ring is embedded in the annular sealing groove.

[0009] Preferably, a limiting inclined surface is convexly arranged on one side of the second sealing ring, and a positioning inclined surface adapted to the limiting inclined surface is arranged on the annular sealing groove.

[0010] Preferably, the limiting inclined surface is arranged in a gradually shrinking state toward the axis side of the valve core.

[0011] The above technical solution provided by the present utility model has the following advantages compared with the prior art: When the valve core is pressed against the valve body by the valve cover and forms a sealing fit with the first sealing ring, the first sealing ring can discharge the gas from the first pressure relief opening on one side of the U-shaped sealing groove, avoiding the formation of negative pressure after the medium enters the U-shaped sealing groove, which affects the later disassembly and maintenance. At the same time, when the second sealing ring installed at the bottom of the valve core forms a sealing fit with the valve body, the second pressure relief opening can also be used for pressure relief to avoid the occurrence of negative pressure, which can prevent scratches and damage to the surface of the valve core during later maintenance and disassembly. The first sealing ring and the second sealing ring can be disassembled by using the first pressure relief opening and the second pressure relief opening respectively, greatly reducing the damage of the multi-valve core. Description of the Drawings

[0012] Figure 1 is the overall structural schematic diagram of the present utility model;

[0013] Figure 2 is the enlarged view of part A of the present utility model;

[0014] Figure 3 is the enlarged view of part B of the present utility model.

[0015] In the figure: 1, valve body; 2, valve cover; 3, adjusting handle; 4, valve rod; 5, valve core; 8, inlet flow channel; 9, outlet flow channel; 10, first pressure relief component; 11, second pressure relief component; 12, first sealing ring; 13, first pressure relief opening; 14, second sealing ring; 15, second pressure relief opening; 16, first positioning step; 17, first positioning boss; 18, second positioning step; 19, U-shaped sealing groove; 20, supporting flange; 21, annular sealing groove; 23, limiting inclined surface; 24, positioning inclined surface. Detailed Embodiments

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0017] Embodiment: As shown in the attached Figures 1 to 3 figure, a baffle valve includes a valve body 1, a valve cover 2, an adjusting handle 3, a valve stem 4 and a valve core 5. An inlet flow channel 8 and an outlet flow channel 9 are provided on the valve body 1. The valve cover 2 is installed on the valve body 1. The adjusting handle 3 is connected to the valve core 5 and is hermetically arranged in the valve body 1. The adjusting handle 3 is connected to the valve stem 4 and is installed on the valve body 1. A first pressure relief component 10 is provided on the valve body 1, and a second pressure relief component 11 is provided on the valve core 5. The first pressure relief component 10 includes a first sealing ring 12 (specifically made of hard rubber) and a plurality of first pressure relief openings 13. The first sealing ring 12 is embedded on the valve body 1 near the valve cover 2. One end of the valve core 5 is pressed between the first sealing ring 12 and the valve cover 2. The plurality of first pressure relief openings 13 (specifically 4 are provided) are opened on the inner circumferential surface of the valve body 1 and communicate with the first sealing ring 12. The second pressure relief component 11 includes a second sealing ring 14 (specifically made of hard rubber) and a second pressure relief opening 15. The second sealing ring 14 is provided on the valve core 5 near the inlet flow channel 8. The second pressure relief opening 15 is opened on the valve core 5 and communicates with the second sealing ring 14. When the valve core 5 is pressed on the valve body 1 through the valve cover 2 and forms a sealing fit with the first sealing ring 12, the first sealing ring 12 can discharge the gas from the first pressure relief opening 13 on one side of the U-shaped sealing groove 19, avoiding the formation of negative pressure after the medium enters the U-shaped sealing groove 19 and affecting the later disassembly and maintenance. At the same time, when the second sealing ring 14 installed at the bottom of the valve core 5 forms a sealing fit with the valve body 1, the second pressure relief opening 15 can also be used for pressure relief to avoid the occurrence of negative pressure, which can prevent scratches and damage to the surface of the valve core 5 during later maintenance and disassembly. The first sealing ring 12 and the second sealing ring 14 can be disassembled respectively by using the first pressure relief opening 13 and the second pressure relief opening 15, greatly reducing the damage of the valve core 5.

[0018] As shown in the attached Figure 2 figure, a first positioning step 16 is provided on the valve body 1 near the valve cover 2, and a first positioning boss 17 (an integral structure) adapted to the first positioning step 16 is protruded on the valve cover 2, which is convenient for the installation of the valve cover 2 and plays a role in positioning and supporting the valve core 5.

[0019] As shown in the attached Figure 2As shown, a second positioning step 18 is provided on one side of the first positioning step 16. A U-shaped sealing groove 19 is provided on the second positioning step 18. The first sealing ring 12 is embedded in the U-shaped sealing groove 19. The valve core 5 is provided with a supporting flange 20 (which is an integral structure). The supporting flange 20 is clamped between the first positioning boss 17 and the first sealing ring 12. The valve core 5 uses the supporting flange 20 to achieve pressing and sealing with the first sealing ring 12.

[0020] As shown in the Figure 2 accompanying drawings, the first pressure relief opening 13 is arranged in an annular array on one side of the inner peripheral surface of the U-shaped sealing groove 19. One side of the first pressure relief opening 13 is communicated with the valve body 1. After the first sealing ring 12 is installed in the U-shaped sealing groove 19, pressure can be relieved through the first pressure relief opening 13 to prevent negative pressure from being generated.

[0021] As shown in the Figure 3 accompanying drawings, an annular sealing groove 21 is formed at the bottom of the valve core 5. The second sealing ring 14 is embedded in the annular sealing groove 21 for sealing cooperation with the valve body 1.

[0022] As shown in the Figure 3 accompanying drawings, a limiting inclined surface 23 is convexly provided on one side of the second sealing ring 14. A positioning inclined surface 24 adapted to the limiting inclined surface 23 is provided on the annular sealing groove 21, which can make the support stable when the sealing ring is installed.

[0023] As shown in the Figure 3 accompanying drawings, the limiting inclined surface 23 is arranged in a gradually shrinking state towards the axis side of the valve core 5, which is convenient for the installation of the second sealing ring 14.

[0024] In the present utility model, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only relational terms determined for the convenience of describing the structural relationship of each component or element of the present utility model, and do not specifically refer to any component or element in the present utility model, and should not be construed as a limitation to the present utility model.

Claims

1. A baffle valve, comprising a valve body (1), a valve cover (2), an adjusting handle (3), a valve stem (4) and a valve core (5). An inlet flow channel (8) and an outlet flow channel (9) are formed in the valve body (1). The valve cover (2) is installed on the valve body (1). The adjusting handle (3) is connected to the valve core (5) and is hermetically arranged in the valve body (1). The adjusting handle (3) is connected to the valve stem (4) and is installed on the valve body (1), characterized in that: A first pressure relief component (10) is provided on the valve body (1), and a second pressure relief component (11) is provided on the valve core (5). The first pressure relief component (10) includes a first sealing ring (12) and a plurality of first pressure relief openings (13). The first sealing ring (12) is embedded in the valve body (1) on the side close to the valve cover (2). One end of the valve core (5) is pressed between the first sealing ring (12) and the valve cover (2). The plurality of first pressure relief openings (13) are formed on the inner peripheral surface of the valve body (1) and communicate with the first sealing ring (12). The second pressure relief component (11) includes a second sealing ring (14) and a second pressure relief opening (15). The second sealing ring (14) is formed on the valve core (5) on the side close to the inlet flow channel (8). The second pressure relief opening (15) is formed on the valve core (5) and communicates with the second sealing ring (14).

2. The damper valve according to claim 1, characterized in that: A first positioning step (16) is provided on the valve body (1) on the side close to the valve cover (2), and a first positioning boss (17) adapted to the first positioning step (16) is protrudingly provided on the valve cover (2).

3. The damper valve according to claim 2, characterized in that: A second positioning step (18) is provided on one side of the first positioning step (16), and a U-shaped sealing groove (19) is provided on the second positioning step (18). The first sealing ring (12) is embedded in the U-shaped sealing groove (19). The valve core (5) is provided with a support flange (20), and the support flange (20) is clamped between the first positioning boss (17) and the first sealing ring (12).

4. A baffle valve according to claim 3, characterized in that: The first pressure relief openings (13) are arranged in a circular array on one side of the inner peripheral surface of the U-shaped sealing groove (19), and one side of the first pressure relief openings (13) communicates with the valve body (1).

5. A baffle valve according to claim 1, characterized in that: An annular sealing groove (21) is formed at the bottom of the valve core (5), and the second sealing ring (14) is embedded in the annular sealing groove (21).

6. The damper valve according to claim 5, wherein: A limiting inclined surface (23) is protrudingly provided on one side of the second sealing ring (14), and a positioning inclined surface (24) adapted to the limiting inclined surface (23) is provided on the annular sealing groove (21).

7. A damper valve according to claim 6, characterized in that: The limiting inclined surface (23) is arranged to gradually shrink towards the axis side of the valve core (5).

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