Multi-seal exhaust valve

Abstract

The utility model relates to the technical field of exhaust valves, and provides a multi-seal exhaust valve which comprises a main body provided with a channel. The first sealing sleeve sleeves the channel and is provided with a first inner cavity, and the first inner cavity is communicated with the channel; the first sealing sleeve is further provided with air holes. The sealing bead is movably arranged in the first inner cavity and located between the channel and the air hole, and the channel is blocked or not blocked after the sealing bead moves. The second sealing sleeve sleeves the main body and is provided with a second inner cavity, the first sealing sleeve is located in the second inner cavity, the first inner cavity is communicated with the second inner cavity through the air hole, and a gap is formed between the first sealing sleeve and the second sealing sleeve. By means of the technical scheme, the problems that in the prior art, a single-layer exhaust valve is short in service life, the replacement period is short, the safe operation period of equipment is affected, and the maintenance period and the maintenance cost are increased are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust valves, and in particular to a multi-seal exhaust valve. Background Art

[0002] During the operation of a continuous flatbed press, the secondary circulation system must be oiled, heated, and drained to ensure normal operation and product quality. The exhaust valve is used in all of these processes and is an indispensable and key component in the secondary circulation system of a continuous flatbed press. Its main functions include: timely exhausting gas from the system during the oiling and heating processes to prevent excessive pressure and ensure safe operation of the equipment; and maintaining the system's tightness to prevent leakage of high-temperature media, which could affect the safe and stable operation of the continuous flatbed press and affect production efficiency.

[0003] Conventional exhaust valves typically utilize a single-layer design, which has relatively poor sealing performance and is prone to leakage. Particularly in high-temperature and high-pressure environments, the sealing material is susceptible to aging, resulting in a loss of sealing effectiveness. Due to their simple structure, single-layer exhaust valves are subject to significant pressure and temperature fluctuations, making them susceptible to wear and corrosion, resulting in a short service life. This short service life requires frequent replacement of single-layer exhaust valves, which not only increases maintenance costs but also impacts equipment uptime and production efficiency. Utility Model Content

[0004] The utility model proposes a multi-seal exhaust valve, which solves the problem in the related art that the single-layer exhaust valve has a short service life and a short replacement cycle, thereby affecting the safe operation cycle of the equipment and increasing the maintenance cycle and maintenance cost.

[0005] The technical solution of the utility model is as follows: a multi-seal exhaust valve, comprising:

[0006] a main body having a channel;

[0007] a first sealing sleeve, the first sealing sleeve being sleeved on the channel and having a first inner cavity, the first inner cavity being communicated with the channel; the first sealing sleeve further having an air hole;

[0008] a sealing bead, the sealing bead being movably disposed in the first inner cavity and located between the channel and the pore, and the sealing bead being movable to block or unblock the channel;

[0009] The second sealing sleeve is sleeved on the main body and has a second inner cavity. The first sealing sleeve is located in the second inner cavity. The first inner cavity is connected to the second inner cavity through the air hole. There is a gap between the first sealing sleeve and the second sealing sleeve.

[0010] Optionally, the first sealing sleeve is a polygonal cylinder, and the first inner cavity is a cylindrical groove.

[0011] Optionally, the first sealing sleeve is a regular hexagonal column.

[0012] Optionally, the first sealing sleeve is threadedly connected to the channel.

[0013] Optionally, the second sealing sleeve is threadedly connected to the main body.

[0014] Optionally, one end of the channel has a connecting arc surface, and the connecting arc surface is configured to accommodate a portion of the sealing bead and enable the sealing bead to seal the channel.

[0015] Optionally, it also includes:

[0016] A sealing ring is sleeved on the main body and located between the second sealing sleeve and the main body, with two sides of the sealing ring contacting the main body and the second sealing sleeve respectively.

[0017] Optionally, the air hole is eccentrically arranged relative to an end of the channel close to the air hole.

[0018] Optionally, the second sealing sleeve has a grip portion.

[0019] Optionally, the grip is polygonal or has anti-slip patterns.

[0020] The working principle and beneficial effects of the utility model are as follows:

[0021] In the utility model, the exhaust valve is connected to the exhaust pipe and includes a main body, the main body having a channel, a first sealing sleeve mounted on the channel and having a first inner cavity. The first inner cavity is connected to the channel, and the first sealing sleeve also has an air hole. The sealing bead is movably arranged in the first inner cavity, located between the channel and the air hole. The bottom of the first sealing sleeve and the end of the channel jointly clamp the sealing bead so that the sealing bead stably seals the channel. The second sealing sleeve is mounted on the main body and has a second inner cavity. The first sealing sleeve is located in the second inner cavity, and the first inner cavity is connected to the second inner cavity through the air hole. There is a gap between the first sealing sleeve and the second sealing sleeve.

[0022] In the initial state, the bottom of the first sealing sleeve and the end of the channel jointly clamp the sealing bead and seal the channel, forming a first layer of seal. At this time, the second sealing sleeve is mounted on the main body to form a second layer of seal. When the first layer of seal leaks, the second layer of seal can play a protective role, preventing high-temperature oil from directly spraying out and causing safety hazards. When gas needs to be released, the second sealing sleeve can be removed and then the first sealing sleeve is loosened, so that the space in the first inner cavity is increased, the sealing bead is no longer compressed, and the first inner cavity provides space for the sealing bead to move. The sealing bead is pushed out of the blocked channel by the oil and gas in the channel. At this time, the channel, the first inner cavity and the external space are connected through the air hole, thereby achieving air release through the air hole and completing the air release process.

[0023] The dual-layer seal (primary and secondary sealing sleeves) addresses the relatively poor sealing performance of single-layer exhaust valves, effectively preventing leakage. This double-layer seal structure can better withstand pressure and temperature fluctuations in high-temperature and high-pressure environments, reducing wear and corrosion, thereby extending the exhaust valve's service life. This extended service life reduces the need for frequent exhaust valve replacement, lowering maintenance costs and increasing equipment uptime and productivity. The double-layer seal maintains excellent sealing performance under extreme conditions, preventing leakage caused by aging sealing materials. It effectively prevents the leakage of gas and oil droplets, enhancing system safety. This significantly improves sealing performance and service life, addressing the vulnerability of single-layer exhaust valves to leakage, wear, and corrosion in high-temperature and high-pressure environments. This design not only reduces maintenance costs, but also increases equipment uptime and productivity, while also enhancing system safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The preferred embodiments will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0025] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the explosion structure of the utility model.

[0027] In the figure: 1. Main body; 101. Channel; 102. Connecting arc surface; 2. First sealing sleeve; 201. First inner cavity; 202. Air hole; 3. Sealing bead; 4. Second sealing sleeve; 401. Grip; 402. Second inner cavity; 5. Gap; 6. Sealing ring. DETAILED DESCRIPTION

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0029] To simplify the drawings, only the parts relevant to the utility model are schematically shown in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically shown or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0030] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0031] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0032] Reference Figure 1~Figure 2 A multi-seal exhaust valve is proposed, comprising: a main body 1, the main body 1 having a channel 101; a first sealing sleeve 2, the first sealing sleeve 2 is sleeved on the channel 101 and has a first inner cavity 201, the first inner cavity 201 is communicated with the channel 101; the first sealing sleeve 2 also has an air hole 202; a sealing bead 3, the sealing bead 3 is movably arranged in the first inner cavity 201, located between the channel 101 and the air hole 202, and the sealing bead 3 blocks or unblocks the channel 101 after movement; a second sealing sleeve 4, the second sealing sleeve 4 is sleeved on the main body 1 and has a second inner cavity 402, the first sealing sleeve 2 is located in the second inner cavity 402, the first inner cavity 201 is communicated with the second inner cavity 402 through the air hole 202, a gap 5 is provided between the first sealing sleeve 2 and the second sealing sleeve 4, and the air hole 202 is eccentrically arranged at one end of the channel 101 close to the air hole 202.

[0033] In this embodiment, the exhaust valve is connected to the exhaust pipe and includes a main body 1. The main body 1 has a channel 101. The first sealing sleeve 2 is sleeved on the channel 101 and has a first inner cavity 201. The first inner cavity 201 is connected to the channel 101, and the first sealing sleeve 2 also has an air hole 202. The sealing bead 3 is movably arranged in the first inner cavity 201 and is located between the channel 101 and the air hole 202. The bottom of the first sealing sleeve 2 and the end of the channel 101 jointly clamp the sealing bead 3 so that the sealing bead 3 stably seals the channel 101. The second sealing sleeve 4 is sleeved on the main body 1 and has a second inner cavity 402. The first sealing sleeve 2 is located in the second inner cavity 402, and the first inner cavity 201 is connected to the second inner cavity 402 through the air hole 202. There is a gap 5 between the first sealing sleeve 2 and the second sealing sleeve 4.

[0034] In the initial state, the bottom of the first sealing sleeve 2 and the end of the channel 101 together clamp the sealing bead 3 and seal the channel 101, forming a first layer of seal. At this time, the second sealing sleeve 2 is mounted on the main body 1 to form a second layer of seal. When the first layer of seal leaks, the second layer of seal can play a protective role, preventing high-temperature oil from directly spraying out and causing safety hazards. When it is necessary to release gas, the second sealing sleeve 4 can be removed, and then the first sealing sleeve 2 can be loosened to increase the space in the first inner cavity 201. The sealing bead 3 is no longer compressed, and the first inner cavity 201 provides space for the sealing bead 3 to move. The sealing bead 3 is pushed away from the blocked channel 101 by the oil and gas in the channel 101. At this time, the channel 101, the first inner cavity 201 and the external space are connected through the air hole 202, thereby achieving deflation through the air hole 202 and completing the deflation process.

[0035] The dual-layer sealing system (first sealing sleeve 2 and second sealing sleeve 4) addresses the relatively poor sealing performance of single-layer exhaust valves and effectively prevents leakage. This dual-layer sealing structure can better withstand pressure and temperature fluctuations in high-temperature and high-pressure environments, reducing wear and corrosion, thereby extending the exhaust valve's service life. This extended service life reduces the need for frequent exhaust valve replacement, lowering maintenance costs and increasing equipment uptime and productivity. The dual-layer sealing structure maintains excellent sealing performance under extreme conditions, preventing leakage caused by aging sealing materials. It effectively prevents the leakage of gas and oil droplets, enhancing system safety. This significantly improves sealing performance and service life, addressing the vulnerability of single-layer exhaust valves to leakage, wear, and corrosion in high-temperature and high-pressure environments. This design not only reduces maintenance costs, but also increases equipment uptime and productivity, while also enhancing system safety and reliability.

[0036] Furthermore, the first sealing sleeve 2 is a polygonal column, and the first inner cavity 201 is a cylindrical groove. The first sealing sleeve 2 is a regular hexagonal column.

[0037] In this embodiment, the first sealing sleeve 2 is designed as a polygonal cylinder (specifically, a regular hexagonal cylinder), and the first inner cavity 201 is a cylindrical groove, which provides multiple planes, increases friction, and makes it easier for the operator to apply torque. Compared with circular cylinders, regular hexagonal cylinders are less likely to slip when manually twisted, improving the stability and safety of operation. Regular hexagonal cylinders are not only suitable for manual operation, but also convenient for tightening or disassembling using tools such as wrenches. Common wrenches and socket tools can work well with regular hexagonal cylinders, improving work efficiency. When subjected to torsional forces, regular hexagonal cylinders can better disperse stress and reduce local deformation. This helps maintain the structural stability of the first sealing sleeve 2 and extend its service life. The multi-plane design of the regular hexagonal cylinder allows the first sealing sleeve 2 to be evenly stressed during installation, avoiding sealing failure caused by excessive stress at a single point, and can effectively improve the overall performance and reliability of the exhaust valve.

[0038] Furthermore, the first sealing sleeve 2 is threadedly connected to the channel 101 . The second sealing sleeve 4 is threadedly connected to the main body 1 .

[0039] In this embodiment, the threaded connection provides a good mechanical sealing effect, facilitates installation and maintenance, and ensures that gas and oil droplets will not leak.

[0040] Furthermore, one end of the channel 101 has a connecting arc surface 102 , and the connecting arc surface 102 is configured to accommodate a portion of the sealing bead 3 and enable the sealing bead 3 to seal the channel 101 .

[0041] In this embodiment, the connecting arc surface 102 is a smooth arc surface, and its shape and size are designed to accommodate a portion of the sealing bead 3. The design of the connecting arc surface 102 ensures that the sealing bead 3 can fit tightly against the end of the channel 101 to form a reliable seal to prevent gas and oil droplets from leaking. The smooth arc surface reduces the friction between the sealing bead 3 and the channel 101, thereby extending the service life of the sealing bead 3.

[0042] Furthermore, it also includes: a sealing ring 6, which is sleeved on the main body 1 and located between the second sealing sleeve 4 and the main body 1, and both sides of the sealing ring 6 are in contact with the main body 1 and the second sealing sleeve 4 respectively.

[0043] In this embodiment, the sealing ring 6 is typically made of a high-temperature-resistant and corrosion-resistant elastic material (such as fluororubber, silicone rubber, or a metal sealing material). It has a certain degree of elasticity and compressibility and can adapt to sealing requirements under different pressure and temperature conditions. The sealing ring 6 forms an additional sealing layer between the second sealing sleeve 4 and the main body 1, effectively preventing gas and oil droplets from leaking from the threaded connection. The sealing ring 6 can fill the tiny gap 5 between the second sealing sleeve 4 and the main body 1, ensuring a tight fit and maintaining good sealing performance even in the presence of temperature changes or mechanical vibrations. The sealing ring 6 can absorb some stress and wear, reducing the wear caused by direct contact between the second sealing sleeve 4 and the main body 1, thereby extending the service life of the entire exhaust valve. By adding a layer of sealing, the reliability and safety of the entire system are improved, and the risk of failure due to leakage is reduced.

[0044] Furthermore, the second sealing sleeve 4 has a gripping portion 401 ; the gripping portion 401 is polygonal or has anti-slip patterns.

[0045] In this embodiment, the polygonal shape and the anti-slip grooves provide an operator with a good grip even in a wet or greasy environment, thereby improving the safety and comfort of operation.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A multi-seal exhaust valve, characterized in that: include: A main body (1), wherein the main body (1) has a channel (101); A first sealing sleeve (2), the first sealing sleeve (2) is sleeved on the channel (101) and has a first inner cavity (201), the first inner cavity (201) is communicated with the channel (101); the first sealing sleeve (2) also has an air hole (202); a sealing bead (3), the sealing bead (3) being movably disposed in the first inner cavity (201) and located between the channel (101) and the air hole (202), and the sealing bead (3) being movable to block or unblock the channel (101); A second sealing sleeve (4), the second sealing sleeve (4) is sleeved on the main body (1) and has a second inner cavity (402), the first sealing sleeve (2) is located in the second inner cavity (402), the first inner cavity (201) is connected to the second inner cavity (402) through the air hole (202), and a gap (5) is provided between the first sealing sleeve (2) and the second sealing sleeve (4).

2. A multi-seal exhaust valve according to claim 1, characterized in that: The first sealing sleeve (2) is a polygonal cylinder, and the first inner cavity (201) is a cylindrical groove.

3. A multi-seal exhaust valve according to claim 2, characterized in that: The first sealing sleeve (2) is a regular hexagonal column.

4. The multi-seal exhaust valve according to claim 1, characterized in that: The first sealing sleeve (2) is threadedly connected to the channel (101).

5. The multi-seal exhaust valve according to claim 1, characterized in that: The second sealing sleeve (4) is threadedly connected to the main body (1).

6. The multi-seal exhaust valve according to claim 1, characterized in that: One end of the channel (101) has a connecting arc surface (102), and the connecting arc surface (102) is configured to accommodate a portion of the sealing bead (3) and enable the sealing bead (3) to seal the channel (101).

7. The multi-seal exhaust valve according to claim 1, characterized in that: Also includes: A sealing ring (6) is sleeved on the main body (1) and located between the second sealing sleeve (4) and the main body (1), with two sides of the sealing ring (6) respectively in contact with the main body (1) and the second sealing sleeve (4).

8. The multi-seal exhaust valve according to claim 1, characterized in that: The air hole (202) is eccentrically arranged relative to the axis of the first sealing sleeve (2).

9. The multi-seal exhaust valve according to claim 1, characterized in that: The second sealing sleeve (4) has a grip portion (401).

10. The multi-seal exhaust valve according to claim 9, characterized in that: The grip portion (401) is polygonal or has anti-slip patterns.

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