Energy saving vacuum valve

Abstract

The utility model relates to valve technical field and disclose an energy -conserving vacuum valve, including bottom shell and installation base, the installation base is fixedly installed at the top of bottom shell through fixed bolt, the top fixed mounting of installation base has the shell. This energy -conserving vacuum valve, when sealing, through the drive equipment drive sealing disc downward movement, sealing disc drives sealing snap ring downward movement and inserts to the inside of sealing slot, after sealing snap ring inserts to the inside of sealing slot, the bottom of sealing disc and the top of bottom sealing seat fit and seal the gasket and carry out extrusion deformation, improve the sealing effect through the gasket, and the junction forms a region of many angles, increase the difficulty of leakage, thereby improved the effect of sealing, and the sealing strip only outwardly extends after sealing snap ring inserts the inside of sealing slot, reduced the difficulty of sealing snap ring downward insertion sealing slot inside, and reduced the sealing strip wear, thereby improved the life of use.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to an energy-saving vacuum valve. Background Technology

[0002] A vacuum valve is a special valve specifically designed for use in vacuum environments (i.e., systems with pressures far below one standard atmosphere). Its primary function is to cut off, connect, regulate, or change the direction of airflow within a vacuum system, thereby achieving precise control of the vacuum level. Vacuum valves are the "choke point" of vacuum technology; although they do not directly create a vacuum, by precisely controlling the flow and direction of airflow, they are a crucial component for constructing, maintaining, and managing vacuum systems, ensuring the smooth operation of various high-end manufacturing and scientific research processes. Their high-performance sealing and low-outflow characteristics are the fundamental differences between them and ordinary valves.

[0003] Utility model patent with publication number CN217381894U discloses a vacuum valve, including a valve body, an end cap, a valve, and a sealing device. The valve body has a hollow cavity. The end cap is connected to the upper opening of the valve body to seal the cavity of the valve body. The valve is located inside the cavity of the valve body and can move up and down relative to the valve body. The sealing device used in this vacuum valve design is convenient for disassembly and assembly while ensuring the sealing effect of the vacuum valve.

[0004] In actual use, the vacuum valve achieves isolation and sealing only by pressing down, and air leakage is prone to occur at the bottom of the valve, affecting the sealing effect of the valve. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an energy-saving vacuum valve that solves the problem of poor sealing effect at the valve position in vacuum valve sealing and protection measures.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an energy-saving vacuum valve, comprising a bottom shell and a mounting base, wherein the mounting base is fixedly mounted on the top of the bottom shell by fixing bolts, and an outer shell is fixedly mounted on the top of the mounting base. A side tube is fixedly mounted on the surface of the outer shell, and a connecting flange for connecting to a gas supply pipeline is installed at the end of the side tube away from the outer shell. A driving device is fixedly mounted on the top of the outer shell, and the output end of the driving device extends into the interior of the outer shell. A sealing disc is fixedly mounted on the bottom output end of the driving device. The sealing disc is driven downward by the driving device to perform sealing. A sealing device for improving the sealing effect is provided on the top of the mounting base directly opposite the sealing disc.

[0007] Preferably, the sealing device includes a sealing ring, a bottom sealing seat, a sealing slot, a support spring, and a sealing piston ring seat. The sealing ring is fixedly installed on the bottom of the sealing disc, the bottom sealing seat is fixedly installed on the top of the mounting base, the sealing slot is opened on the top of the bottom sealing seat, and the sealing slot is located directly below the sealing ring. The sealing ring moves downward and inserts into the sealing slot to seal. The support spring is installed at the bottom of the sealing slot, and the sealing piston ring seat is installed above the support spring, providing elastic support to the sealing piston ring seat through the support spring.

[0008] Preferably, sealing gaskets are installed on the top of the bottom sealing seat and on both sides of the sealing slot. After the sealing disc drives the sealing ring to be fully inserted into the sealing slot, the bottom of the sealing disc presses on the top of the sealing gasket.

[0009] Preferably, the sealing device further includes a pressure chamber, a connecting hole, and a sealing strip. The pressure chamber is located on the outside of the sealing slot, and an annular mounting groove is formed on the inner surface of the sealing slot. The sealing strip is installed inside the annular mounting groove and is located above the sealing piston ring seat. A connecting hole is formed on the outside of the annular mounting groove, which connects the annular mounting groove and the pressure chamber.

[0010] Preferably, the sealing ring is adapted to the size of the sealing slot, and the bottom edge of the sealing slot is rounded.

[0011] Preferably, the bottom of the sealing disc has a groove that matches the sealing gasket. When the sealing disc moves downward and fits against the top of the bottom sealing seat, the sealing disc is inserted into the groove, and the sealing gasket is squeezed through the groove.

[0012] Compared with the prior art, this utility model provides an energy-saving vacuum valve with the following advantages:

[0013] 1. When sealing, this energy-saving vacuum valve drives the sealing disc to move downwards via a drive device. The sealing disc moves the sealing ring downwards and inserts it into the sealing slot. After the sealing ring is inserted into the sealing slot, the bottom of the sealing disc fits against the top of the bottom sealing seat, compressing and deforming the sealing gasket. This improves the sealing effect through the sealing gasket. At the same time, a multi-angled area is formed at the connection, increasing the difficulty of leakage and thus improving the sealing effect.

[0014] 2. In this energy-saving vacuum valve, when the sealing ring is inserted into the sealing slot, it pushes the sealing piston ring seat downward. The downward movement of the sealing piston ring seat compresses the air at the bottom of the sealing piston ring seat, causing the air pressure to rise. The air pressure at the bottom of the sealing piston ring seat and inside the pressure chamber both increase. The high pressure inside the pressure chamber enters the annular mounting groove through the connecting hole, squeezing the sealing strip under high pressure and applying pressure to it, causing the sealing strip to adhere to the side of the sealing ring and seal the gap between the sealing ring and the sealing slot. Compared with general sealing methods that only use longitudinal pressure to press the sealing ring for sealing, this valve improves the sealing effect by changing the straight sealing surface to a multi-bent surface and combining it with multi-directional angle sealing.

[0015] 3. In this energy-saving vacuum valve, the sealing strip only extends outward after the sealing ring is inserted into the sealing slot, which reduces the difficulty of inserting the sealing ring downward into the sealing slot and reduces the wear of the sealing strip, thereby improving its service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the outer shell of this utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0019] The components are: 1. bottom shell; 2. mounting base; 3. fixing bolts; 4. outer shell; 5. side pipe; 6. connecting flange; 7. drive equipment; 8. sealing plate; 9. sealing device; 91. sealing ring; 92. bottom sealing seat; 93. sealing slot; 94. support spring; 95. sealing piston ring seat; 96. sealing gasket; 97. pressure chamber; 98. connecting hole; 99. sealing strip. 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] Example 1:

[0022] like Figure 1-3As shown, this utility model provides an energy-saving vacuum valve, including a bottom shell 1 and a mounting base 2. The mounting base 2 is fixedly installed on the top of the bottom shell 1 by fixing bolts 3. An outer shell 4 is fixedly installed on the top of the mounting base 2. A side pipe 5 is fixedly installed on the surface of the outer shell 4. A connecting flange 6 for connecting to a gas supply pipeline is installed at the end of the side pipe 5 away from the outer shell 4. A driving device 7 is fixedly installed on the top of the outer shell 4. The driving device 7 is started by a controller. The driving device 7 has two working states: downward extension and upward retraction. The output end of the driving device 7 extends into the interior of the outer shell 4. A sealing disc 8 is fixedly installed at the bottom output end of the driving device 7. The sealing disc 8 is driven downward by the driving device 7 to perform sealing. A sealing device 9 is provided on the top of the mounting base 2, directly opposite the sealing disc 8, to improve the sealing effect. The sealing device 9 seals the gap at the bottom of the sealing disc 8 to prevent leakage.

[0023] The sealing device 9 includes a sealing ring 91, a bottom sealing seat 92, a sealing slot 93, a support spring 94, and a sealing piston ring seat 95. The sealing ring 91 is fixedly installed on the bottom of the sealing disc 8, and the bottom sealing seat 92 is fixedly installed on the top of the mounting base 2. The sealing slot 93 is opened on the top of the bottom sealing seat 92 and is located directly below the sealing ring 91. The sealing ring 91 moves downward and inserts into the sealing slot 93 to seal, forming a multi-angled area, which increases the difficulty of gas flow and thus indirectly improves the sealing effect. The support spring 94 is installed at the bottom of the sealing slot 93, and the sealing piston ring seat 95 is installed above the support spring 94. The support spring 94 provides elastic support to the sealing piston ring seat 95 and applies pressure to the sealing piston ring seat 95, so that after the sealing ring 91 is pressed above the sealing piston ring seat 95, the two can maintain stable pressing contact and press and seal the contact position.

[0024] Sealing gaskets 96 are installed on the top of the bottom sealing seat 92 and on both sides of the sealing slot 93. After the sealing disc 8 drives the sealing ring 91 to be fully inserted into the sealing slot 93, the bottom of the sealing disc 8 presses on the top of the sealing gasket 96. By pressing the sealing gasket 96 with the sealing disc 8, the sealing gasket 96 is squeezed and deformed. After the sealing gasket 96 is deformed, it seals the gap between the sealing disc 8 and the top of the bottom sealing seat 92.

[0025] Example 2:

[0026] like Figure 1-3 As shown, based on Example 1, sealing strips 99 are added to the inner and outer sides of the sealing ring 91. After the sealing ring 91 is inserted into the sealing slot 93, pressure is applied to the sealing strips 99 to make them fit tightly against the inner and outer sides of the sealing ring 91, thereby further improving the sealing effect.

[0027] The sealing device 9 also includes a pressure chamber 97, a connecting hole 98, and a sealing strip 99. The pressure chamber 97 is located on the outside of the sealing slot 93. An annular mounting groove is formed on the inner surface of the sealing slot 93. The sealing strip 99 is installed inside the annular mounting groove and is located above the sealing piston ring seat 95. A connecting hole 98 is formed on the outside of the annular mounting groove, connecting the annular mounting groove and the pressure chamber 97. When the air pressure inside the pressure chamber 97 increases, the air pressure pushes the sealing strip 99 outward, so that the sealing strip 99 contacts the surface of the sealing ring 91. The sealing strip 99 only extends outward after the sealing ring 91 is inserted into the sealing slot 93, which reduces the difficulty of inserting the sealing ring 91 into the sealing slot 93 and reduces the wear of the sealing strip 99, thereby improving its service life.

[0028] The sealing ring 91 is adapted to the size of the sealing slot 93. The bottom edge of the sealing slot 93 is rounded to facilitate the downward movement of the sealing ring 91 into the interior of the sealing slot 93. After the sealing ring 91 is inserted into the interior of the sealing slot 93, the sealing ring 91 and the sealing slot 93 are in a close fit.

[0029] The bottom of the sealing disc 8 has a groove that matches the sealing gasket 96. When the sealing disc 8 moves downward and fits against the top of the bottom sealing seat 92, the sealing disc 8 is inserted into the groove. The groove squeezes the sealing gasket 96, so that the sealing gasket 96 remains relatively fixed in position when squeezed, preventing the sealing gasket 96 from being misaligned.

[0030] In use, gas enters the interior of the outer casing 4 through the gas supply pipe along the side pipe 5, and then flows downward through the sealing device 9, through the mounting base 2, and into the bottom casing 1. When sealing is required, the controller controls the extension of the drive device 7. When the drive device 7 extends, it drives the sealing disc 8 to move downward. The sealing disc 8 drives the sealing ring 91 to move downward. After the bottom sealing seat 92 moves above the bottom sealing seat 92, it continues to move downward, so that the sealing ring 91 is inserted into the interior of the sealing slot 93. After the sealing ring 91 is fully inserted into the sealing slot 93, the top of the sealing disc 8 will fit against the top of the bottom sealing seat 92 and squeeze the sealing gasket 96. The sealing gasket 96 deforms under the squeezing force, thereby sealing the gap between the bottom sealing seat 92 and the sealing disc 8, improving the sealing effect. At the same time, the sealing ring 91... 1. During the downward movement of the sealing piston ring seat 95 along the interior of the sealing slot 93, the sealing piston ring seat 95 compresses the support spring 94. The downward movement of the sealing piston ring seat 95 increases the gas pressure in the cavity below the sealing piston ring seat 95 inside the sealing slot 93. At the same time, the gas pressure inside the pressure chamber 97 also increases. The increased gas pressure enters the annular mounting groove through the connecting hole 98. The high-pressure gas causes the sealing strip 99 to deform, making the sealing strip 99 protrude outward from the interior of the annular mounting groove. The outwardly protruding sealing strip 99 contacts the side of the sealing ring 91, thereby sealing the gap between the sealing slot 93 and the sealing ring 91. By changing the straight sealing surface to a multi-bent surface for sealing, and combining it with a multi-directional angle sealing method, the sealing effect is improved.

[0031] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving vacuum valve, comprising a base (1) and a mounting base (2), characterized in that: The mounting base (2) is fixedly mounted on the top of the bottom shell (1) by fixing bolts (3). The top of the mounting base (2) is fixedly mounted with a shell (4). A side tube (5) is fixedly mounted on the surface of the shell (4). A connecting flange (6) for connecting to the gas supply pipeline is installed at the end of the side tube (5) away from the shell (4). A driving device (7) is fixedly mounted on the top of the shell (4). The output end of the driving device (7) extends into the interior of the shell (4). A sealing plate (8) is fixedly mounted on the bottom output end of the driving device (7). The sealing plate (8) is driven downward by the driving device (7) to perform sealing. A sealing device (9) for improving the sealing effect is provided on the top of the mounting base (2) directly opposite the sealing plate (8).

2. The energy-saving vacuum valve according to claim 1, characterized in that: The sealing device (9) includes a sealing ring (91), a bottom sealing seat (92), a sealing slot (93), a support spring (94), and a sealing piston ring seat (95). The sealing ring (91) is fixedly installed at the bottom of the sealing disc (8), and the bottom sealing seat (92) is fixedly installed at the top of the mounting base (2). The sealing slot (93) is opened at the top of the bottom sealing seat (92) and is located directly below the sealing ring (91). The sealing ring (91) moves downward and inserts into the sealing slot (93) for sealing. The support spring (94) is installed at the bottom of the sealing slot (93), and the sealing piston ring seat (95) is installed above the support spring (94). The support spring (94) provides elastic support to the sealing piston ring seat (95).

3. The energy-saving vacuum valve according to claim 2, characterized in that: Sealing pads (96) are installed on the top of the bottom sealing seat (92) and on both sides of the sealing slot (93). After the sealing disc (8) drives the sealing ring (91) to be fully inserted into the sealing slot (93), the bottom of the sealing disc (8) presses on the top of the sealing pad (96).

4. The energy-saving vacuum valve according to claim 2, characterized in that: The sealing device (9) further includes a pressure chamber (97), a connecting hole (98), and a sealing strip (99). The pressure chamber (97) is located on the outside of the sealing slot (93). The inner surface of the sealing slot (93) is provided with an annular mounting groove. The sealing strip (99) is installed inside the annular mounting groove and is located above the sealing piston ring seat (95). The connecting hole (98) is provided on the outside of the annular mounting groove, and the connecting hole (98) connects the annular mounting groove and the pressure chamber (97).

5. An energy-saving vacuum valve according to claim 2, characterized in that: The sealing ring (91) is adapted to the size of the sealing slot (93), and the bottom edge of the sealing slot (93) is rounded.

6. The energy-saving vacuum valve according to claim 3, characterized in that: The bottom of the sealing disc (8) is provided with a groove that matches the sealing gasket (96). When the sealing disc (8) moves downward and fits against the top of the bottom sealing seat (92), the sealing disc (8) is inserted into the groove and the sealing gasket (96) is squeezed through the groove.

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