Positive and negative pressure sealing valve convenient to disassemble

Abstract

The utility model discloses a positive and negative pressure sealing valve convenient to disassemble, and relates to the technical field of sealing valves, the positive and negative pressure sealing valve comprises an installation mechanism, the installation mechanism comprises a hollow stud, the top of the hollow stud is fixedly connected with an installation plate, and the top of the installation plate is provided with a hexagonal block convenient to disassemble; the top leakage prevention cover comprises a cover body, and a receding hole is formed in the top of an inner cavity of the cover body; and the valve core mechanism comprises a mounting piece. The hexagonal block convenient to disassemble is arranged at the top of the mounting plate, the clamping portion of a traditional round valve body is optimized to be of a hexagonal structure, the problem that the round valve body is difficult to clamp and fix through a tool is solved, the mounting and disassembling process is more convenient and efficient, operation convenience is remarkably improved, and the service life of the valve body is prolonged. The receding hole of the top leakage prevention cover is designed to be accurately matched with the top of the ejector pin, when the cover body is installed, the top of the ejector pin is only located in the receding hole, the cover body is prevented from directly ejecting the ejector pin downwards, and the sealing failure problem caused by mistaken touch of the ejector pin is effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of sealing valve technology, specifically to a positive and negative pressure sealing valve that is easy to disassemble. Background Technology

[0002] Sealing valves, as indispensable key components in the industrial field, are widely used in numerous industries such as petrochemicals, natural gas transportation, pharmaceuticals, and food processing. In the petrochemical industry, pipeline systems transport various high-temperature, high-pressure, and highly corrosive liquids and gases, playing a crucial role in precisely controlling fluid flow and preventing leaks. Once the seal fails, it not only leads to material waste and environmental pollution but can also potentially cause serious safety accidents. In the food processing and pharmaceutical industries, where hygiene standards are extremely high, sealing valves must ensure that the sterile environment is not compromised and prevent impurities from contaminating the product. However, with the rapid development of various industries, higher demands are being placed on the sealing performance, durability, adjustment accuracy, and adaptability to complex operating conditions of sealing valves, prompting continuous innovation and upgrading.

[0003] For example, Chinese Patent CN221075368U discloses a one-way valve for filling and purging metal barrels to prevent leakage. The valve body is a one-piece metal casting, divided from bottom to top into a lower connecting section, a middle section, and an upper connecting section. A stepped through-hole is formed within the valve body, and a threaded groove is formed on the lower inner circumference of the stepped through-hole. External threads are formed on the outer walls of both the lower and upper connecting sections. A valve core is screwed into the stepped through-hole. This utility model relates to the field of one-way valves for metal packaging barrels, employing a dual-sealing structure of a middle one-way seal and an external plug seal. The one-way valve has high pressure resistance, good sealing performance, a novel structure, and good safety performance, ensuring product sealing performance and realizing the function of vacuuming, injecting protective gas, and automatically sealing.

[0004] Although the above example can provide a double sealing mechanism for the valve body by setting a sealing cap, the upper part of the valve body is round. During disassembly and installation, the round valve body is difficult to hold and fix with tools, which makes the installation and disassembly of the valve body somewhat inconvenient. At the same time, in order to make it easier to press down the pin, its length is often set to slightly protrude from the valve port. When installing the valve body cover, the cover is easy to push the pin downward, which weakens the sealing effect of the sealing valve. Summary of the Invention

[0005] This invention provides a positive and negative pressure sealing valve that is easy to disassemble, in order to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A removable positive and negative pressure sealing valve includes an installation mechanism, wherein the installation mechanism includes a hollow stud, the top of which is fixedly connected to an installation plate, and the top of the installation plate is provided with a removable hexagonal block; an anti-leakage cover, wherein the anti-leakage cover includes a cover body, the top of which has a clearance hole; and a valve core mechanism, wherein the valve core mechanism includes an installation component, the surface of which is threadedly connected to the inner wall of the hollow stud, and the surface of which is fixedly connected to a first sealing ring.

[0008] A further improvement of this utility model is that the installation mechanism further includes a valve port, which is disposed on the surface of the easy-to-remove hexagonal block.

[0009] A further improvement of the present invention is that the valve core mechanism further includes a cross guide frame, the surface of which is fixedly connected to the inner wall of the mounting component, and a pin is slidably connected inside the cross guide frame.

[0010] A further improvement of this utility model is that a sealing block is fixedly connected to the lower end of the ejector pin, and the top of the sealing block overlaps with the bottom of the mounting component.

[0011] A further improvement of this utility model is that: a spring is provided inside the mounting component, one end of the spring is fixedly connected to a connecting component, and the interior of the connecting component is fixedly connected to the surface of the ejector pin.

[0012] A further improvement of this utility model is that the top of the ejector pin is located inside the clearance hole, and when the ejector pin is pressed down, the inner cavity of the mounting component is connected to the lower end of the inner cavity of the hollow stud.

[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0014] This utility model provides a convenient disassembly positive and negative pressure sealing valve. By setting a removable hexagonal block on the top of the mounting plate, the clamping part of the traditional circular valve body is optimized into a hexagonal structure, which solves the problem that it is difficult to use tools to clamp and fix the circular valve body. This makes the installation and disassembly process more convenient and efficient, and significantly improves the ease of operation. The clearance hole design of the anti-leakage cover is precisely matched with the top of the ejector pin. When installing the cover, the top of the ejector pin is only located in the clearance hole, avoiding the cover directly pushing the ejector pin downward, and effectively preventing the sealing effect from weakening due to accidental contact of the ejector pin. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the anti-leakage cover of this utility model after disassembly;

[0017] Figure 3 This is an exploded structural diagram of the present invention;

[0018] Figure 4 This is a cross-sectional structural diagram of the present invention.

[0019] In the diagram: 11. Hollow stud; 12. Mounting plate; 13. Easy-to-remove hexagonal block; 21. Cover; 22. Clearance hole; 31. Mounting component; 32. First sealing ring; 33. Cross guide frame; 34. Ejector pin; 35. Sealing block; 36. Spring; 37. Connecting component. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to embodiments: Example

[0021] like Figure 1-4 As shown, this utility model provides a conveniently disassembled positive and negative pressure sealing valve, including an installation mechanism, which includes a hollow stud 11, with a mounting plate 12 fixedly connected to the top of the hollow stud 11, and a removable hexagonal block 13 provided on the top of the mounting plate 12; a leak-proof cover, which includes a cover body 21, with a clearance hole 22 opened on the top of the inner cavity of the cover body 21; and a valve core mechanism, which includes a mounting component 31, with the surface of the mounting component 31 threadedly connected to the inner wall of the hollow stud 11, and a first sealing ring 32 fixedly connected to the surface of the mounting component 31.

[0022] In this embodiment, the sealing valve is connected to the device by the hollow stud 11, and the valve core mechanism is fixed by the threaded connection between the mounting part 31 and the inner wall of the hollow stud 11. The first sealing ring 32 ensures the sealing of the connection. When disassembling, the mounting mechanism can be quickly turned by using a wrench or other tools to hold the easy-to-disassemble hexagonal block 13 and achieve overall disassembly. Example

[0023] like Figure 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the installation mechanism includes a hollow stud 11, the top of which is fixedly connected to an installation plate 12, and the top of the installation plate 12 is provided with a removable hexagonal block 13; a leak-proof cover, which includes a cover body 21, the top of which has a clearance hole 22; a valve core mechanism, which includes an installation component 31, the surface of which is threadedly connected to the inner wall of the hollow stud 11, the surface of which is fixedly connected to a first sealing ring 32; the installation mechanism also includes a valve port 14, which is disposed on the surface of the removable hexagonal block 13; the valve core mechanism also includes a cross guide frame 33, the surface of which is fixedly connected to the inner wall of the installation component 31, the interior of which is slidably connected to a pin 34, the lower end of which is fixedly connected to a sealing block 35, and the top of the sealing block 35 overlaps with the bottom of the installation component 31.

[0024] In this embodiment, under normal working conditions, the spring 36 is in a naturally extended state, pushing the connector 37 to make the sealing block 35 at the bottom of the ejector pin 34 tightly overlap with the bottom of the mounting part 31, blocking the communication between the inner cavity of the mounting part 31 and the lower end of the hollow stud 11, thus achieving a seal. When it is necessary to conduct, the ejector pin 34 is pressed down, and the ejector pin 34 slides along the cross guide frame 33 to compress the spring 36, causing the sealing block 35 to disengage from the bottom of the mounting part 31, so that the inner cavity of the mounting part 31 communicates with the lower end of the hollow stud 11, thus achieving the conduction of positive and negative pressure fluids. Example

[0025] like Figure 1-4 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the installation mechanism includes a hollow stud 11, the top of which is fixedly connected to an installation plate 12, and the top of the installation plate 12 is provided with a removable hexagonal block 13; a leak-proof cover, which includes a cover body 21, the top of which has a clearance hole 22; and a valve core mechanism, which includes an installation component 31, the surface of which is threadedly connected to the inner wall of the hollow stud 11, the surface of which is fixedly connected to a first sealing ring 32, the interior of which is provided with a spring 36, one end of which is fixedly connected to a connector 37, the interior of which is fixedly connected to the surface of a ejector pin 34, the top of which is located inside the clearance hole 22, and when the ejector pin 34 is pressed, the interior of the installation component 31 communicates with the lower end of the interior of the hollow stud 11.

[0026] In this embodiment, after the ejector pin 34 is released, the spring 36 resets and pushes the ejector pin 34 upward. The sealing block 35 overlaps the bottom of the mounting piece 31 again to restore the sealing state. When the anti-leakage cover is installed, the clearance hole 22 in the inner cavity of the cover body 21 provides movement space for the top of the ejector pin 34. The cover body 21 only contacts the mounting plate 12 and will not squeeze the ejector pin 34, ensuring that the sealing valve always maintains a reliable seal during the installation process.

[0027] The working principle of this easily disassembled positive and negative pressure sealing valve will be explained in detail below.

[0028] like Figure 1-4As shown, the sealing valve is connected to the equipment using the hollow stud 11. The valve core mechanism is fixed by the threaded connection between the mounting part 31 and the inner wall of the hollow stud 11. The first sealing ring 32 ensures the sealing of the connection. During disassembly, the easy-to-remove hexagonal block 13 can be clamped with a wrench or other tools to quickly turn the mounting mechanism to achieve overall disassembly. Under normal working conditions, the spring 36 is in a naturally extended state, pushing the connecting part 37 to make the sealing block 35 at the bottom of the ejector pin 34 tightly overlap with the bottom of the mounting part 31, blocking the communication between the inner cavity of the mounting part 31 and the lower end of the hollow stud 11, thus achieving a seal. When it is necessary to open the connection, the downward... Pressing the ejector pin 34 causes it to slide along the cross guide frame 33, compressing the spring 36 and causing the sealing block 35 to disengage from the bottom of the mounting part 31. This allows the inner cavity of the mounting part 31 to connect with the lower end of the hollow stud 11, enabling the conduction of positive and negative pressure fluids. After releasing the ejector pin 34, the spring 36 returns to its original position, pushing the ejector pin 34 upward. The sealing block 35 then overlaps the bottom of the mounting part 31 again, restoring the sealing state. When installing the anti-leakage cover, the clearance hole 22 in the inner cavity of the cover 21 provides space for the top of the ejector pin 34 to move. The cover 21 only contacts the mounting plate 12 and will not squeeze the ejector pin 34, ensuring that the sealing valve maintains a reliable seal throughout the installation process.

[0029] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A positive and negative pressure sealing valve that is easy to disassemble, characterized in that: include The installation mechanism includes a hollow stud (11), the top of which is fixedly connected to an installation plate (12), and the top of the installation plate (12) is provided with a removable hexagonal block (13). The anti-leakage cover includes a cover body (21), and a clearance hole (22) is provided at the top of the inner cavity of the cover body (21). The valve core mechanism includes a mounting component (31), the surface of which is threaded to the inner wall of a hollow stud (11), and a first sealing ring (32) is fixedly connected to the surface of the mounting component (31).

2. The easily disassembled positive and negative pressure sealing valve according to claim 1, characterized in that: The mounting mechanism also includes a valve port (14) disposed on the surface of the removable hexagonal block (13).

3. The easily disassembled positive and negative pressure sealing valve according to claim 1, characterized in that: The valve core mechanism also includes a cross guide (33), the surface of which is fixedly connected to the inner wall of the mounting component (31), and a pin (34) is slidably connected inside the cross guide (33).

4. The easily disassembled positive and negative pressure sealing valve according to claim 3, characterized in that: The lower end of the ejector pin (34) is fixedly connected to a sealing block (35), and the top of the sealing block (35) overlaps with the bottom of the mounting component (31).

5. A conveniently disassembled positive and negative pressure sealing valve according to claim 4, characterized in that: The mounting component (31) has a spring (36) inside, and a connector (37) is fixedly connected to one end of the spring (36). The interior of the connector (37) is fixedly connected to the surface of the ejector pin (34).

6. A conveniently disassembled positive and negative pressure sealing valve according to claim 3, characterized in that: The top of the ejector pin (34) is located inside the relief hole (22). When the ejector pin (34) is pressed down, the inner cavity of the mounting part (31) is connected to the lower end of the inner cavity of the hollow stud (11).

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