Adjustable safety device for a steam outlet pipe of a boiler

Abstract

The utility model relates to the technical field of boiling pot, concretely relates to an adjustable safety device of boiling pot exhaust pipe, including the installation board that can be set in the exhaust port place and turn over upward, the water tank fixed on the installation board, liquid level sensor and water inlet control valve. When pressure is normal, the installation board closes the exhaust port, when pressure is out of limit, the installation board is lifted and turns over, drives the water tank to tilt and drain to reduce pressure, resets automatically after pressure recovery. Liquid level sensor controls water inlet valve to supplement water, maintains the set water level. The utility model utilizes lever principle dynamic regulation, through the water tank tilt fast pressure relief, avoids traditional water seal failure problem, realizes automatic pressure regulation, and has the characteristics of quick response and energy -conserving high efficiency. Compared with prior art, has the advantages such as simple structure, reliable sealing, rapid response etc.

Description

Technical Field

[0001] This utility model relates to the field of boiling pot technology, specifically to an adjustable safety device for the steam exhaust pipe of a boiling pot. Background Technology

[0002] Currently, boiling kettles are common heating equipment in food processing, chemical, and pharmaceutical industries. Their exhaust pipes typically require safety devices to prevent safety hazards caused by abnormal pressure fluctuations. Traditional exhaust pipe safety devices often employ a water seal structure, where a water seal tank is installed at the top of the exhaust pipe. The static pressure difference created by the height of the liquid column achieves sealing or pressure relief. When the pressure inside the boiling kettle is normal, the water seal liquid column maintains a certain height, ensuring no steam leakage. When the pressure is too high, steam breaks through the liquid column and escapes. When the pressure is too low, the liquid column is drawn into the exhaust pipe to eliminate the vacuum and prevent air backflow.

[0003] Although water seals are simple in structure and low in cost, they have significant drawbacks: the liquid column height is fixed and cannot be dynamically adjusted. This makes them prone to "blow-through" (when the positive pressure is too high, steam is forced out, destroying the seal) or "draw-through" (when the negative pressure is too high, air breaks through the liquid seal and enters the system). Air infiltration reduces heat exchange efficiency, affects system thermal balance, increases compressor energy consumption, and can even lead to production instability. Furthermore, traditional water seals rely on manual liquid level adjustment, making automated control impossible and limiting their applicability in high-temperature, high-pressure, or frequently changing industrial environments.

[0004] In recent years, some improvement schemes have attempted to replace water seals with spring-loaded safety valves or electric regulating valves. However, these schemes are complex in structure, rely on precision components, lack reliability in high-temperature, high-humidity, or corrosive environments, and have high maintenance costs. Therefore, there is an urgent need for a simple exhaust pipe safety device that can adapt to pressure fluctuations, and combines reliable sealing with automated regulation capabilities.

[0005] In summary, traditional water seal structures, due to their fixed liquid column height, cannot dynamically adjust pressure fluctuations and are easily blown or sucked through, leading to seal failure, increased energy consumption, and unstable production. Existing improvement solutions, on the other hand, suffer from complex structures, poor environmental adaptability, and high maintenance costs. Summary of the Invention

[0006] The first objective of this invention is to overcome the problem that existing adjustable safety devices for the exhaust pipes of energy-saving boiling pots cannot simultaneously address the issues of dynamically adjusting pressure fluctuations and ensuring reliability, and to provide an adjustable safety device for the exhaust pipes of boiling pots.

[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0008] An adjustable safety device for the steam vent pipe of a boiling pot includes a mounting plate, a water tank, a level sensor, and a water inlet control assembly. The mounting plate is foldable upwards and positioned at the steam vent of the steam vent pipe. It has a sealed state and a pressure-relief state. In the sealed state, the steam vent is closed. When the pressure inside the steam vent pipe exceeds a preset value, it is lifted and folded upwards to switch from the sealed state to the pressure-relief state, and resets after the pressure recovers. The water tank is fixed to the upper side of the mounting plate and has an opening at the top. It tilts or resets as the mounting plate flips. The level sensor is located on the water tank and is used to detect the water level. The water inlet control assembly includes a water inlet control valve, which is connected to an external water source through a water inlet pipe. The water inlet control valve opens and closes according to the signal from the level sensor to replenish water after the water tank resets.

[0009] This invention utilizes the lever principle to dynamically regulate the pressure of the boiling pot. When the pressure in the exhaust pipe is normal, the mounting plate seals the exhaust port under gravity. When the pressure increases, the steam pushes the mounting plate upward, causing the water tank to tilt and discharge liquid through the upper opening to reduce the sealing pressure and achieve pressure relief. When the pressure decreases, atmospheric pressure increases the clamping force of the mounting plate, preventing air infiltration. After the pressure recovers, the water inlet control valve replenishes liquid to the set level to reset the seal. Compared with the prior art, this invention's device allows the stored water to be poured directly out through the upper end of the water tank after tilting, achieving rapid pressure relief. It dynamically regulates the sealing pressure through the liquid level, avoiding the "blow-through" or "suction-through" failure problems of traditional water seals, reducing steam leakage and air infiltration to maintain system thermal balance. Simultaneously, it relies on the linkage between the liquid level sensor and the control valve to achieve fully automated operation, combining mechanical structural reliability with energy efficiency.

[0010] Furthermore, the water tank is provided with a water inlet, which is connected to the water inlet pipe. Alternatively, the water outlet of the water inlet pipe is located at the top of the water tank.

[0011] Furthermore, it also includes a water outlet control valve. The water tank is also equipped with a water outlet, which is connected to an external drainage point via a water outlet pipe. The water outlet control valve is located on the water outlet pipe. Because a rapid sealing state is required, the water flow at the inlet is very fast, resulting in the hydraulic pressure exceeding the preset level after water replenishment. Therefore, the water outlet is provided to drain the excess water until the level returns to the preset value.

[0012] Furthermore, a first flexible hose and a second flexible hose are respectively provided between the water inlet and the water inlet pipe, and between the water outlet and the water outlet pipe.

[0013] Furthermore, both the first hose and the second hose are metal hoses.

[0014] Furthermore, it also includes a connecting flange, which is fixed to the exhaust port of the exhaust pipe, and the mounting plate is rotatably placed on the connecting flange through a connecting structure.

[0015] Furthermore, the connection structure is a movable hinge, which is located on the side of the mounting plate and the connecting flange.

[0016] Furthermore, the connection structure includes a first connecting portion located on the side of the connecting flange and a second connecting portion located on the side of the mounting plate. Both the first and second connecting portions have connecting holes, which are connected by a connecting shaft. In this design, the connecting shaft acts as a lever fulcrum, enabling dynamic adjustment of the water tank liquid weight in conjunction with the connecting shaft, efficiently converting the water tank liquid weight into vertical sealing pressure.

[0017] Furthermore, it also includes a high-temperature resistant sealing gasket, which is disposed between the mounting plate and the connecting flange.

[0018] Furthermore, the mounting plate is a blind plate. Attached Figure Description

[0019] Figure 1 A schematic diagram of the adjustable safety device. Figure 1 ;

[0020] Figure 2 A schematic diagram of the adjustable safety device. Figure 2 .

[0021] Label Explanation:

[0022] Mounting plate 1, water tank 2, liquid level sensor 3, water inlet control valve 4, water outlet control valve 5, water inlet pipe 6, water outlet pipe 7, first hose 8, second hose 9, connecting flange 10, movable hinge 11, first connecting part 12, second connecting part 13, connecting hole 14, connecting shaft 15, high temperature resistant sealing gasket 16, vent pipe 19. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0024] See Figure 1-2As shown, this utility model discloses an adjustable safety device for the steam vent pipe of a boiling pot, including a mounting plate 1, a water tank 2, a liquid level sensor 3, and a water inlet control assembly. The mounting plate 1 is rotatably mounted at the steam vent port of the steam vent pipe 19, and has a sealed state and a pressure relief state. In the sealed state, the steam vent port is closed, and when the pressure inside the steam vent pipe 19 exceeds a preset value, it is lifted and rotated upward to switch from the sealed state to the pressure relief state, and resets after the pressure is restored. The water tank 2 is fixed to the upper side of the mounting plate 1, and its upper part is open. Mounting plate 1 flips over and tilts or resets; when mounting plate 1 is lifted and flipped, water tank 2 tilts synchronously, and the water stored inside is discharged through the upper opening to relieve pressure; when the pressure of the vent pipe 19 returns to normal, mounting plate 1 falls back to the position of closing the vent, and water tank 2 resets to the water storage state; liquid level sensor 3 is installed on water tank 2 to detect the water storage level; the water inlet control component includes water inlet pipe 6 connected to an external water source and water inlet control valve 4, which opens and closes according to the signal of liquid level sensor 3 to replenish water storage after water tank 2 resets.

[0025] In one embodiment, the water tank 2 is provided with a water inlet, which is connected to the water inlet pipe 6. Of course, in practical applications, the water outlet of the water inlet pipe 6 can also be located above the water tank 2.

[0026] In one embodiment, a water outlet control valve 5 is also included. The water tank 2 is also provided with a water outlet, which is connected to an external drainage point through a water outlet pipe 7. The water outlet control valve 5 is located on the water outlet pipe 7. In this solution, after the water tank 2 is replenished with water, if the liquid level sensor 3 detects that the liquid level is greater than a preset value, the water outlet control valve 5 can be used to open the water outlet pipe 7 to discharge the excess water.

[0027] In one embodiment, a first flexible hose 8 and a second flexible hose 9 are respectively provided between the water inlet and the water inlet pipe 6, and between the water outlet and the water outlet pipe 7.

[0028] Furthermore, both the first hose 8 and the second hose 9 are metal hoses. In one embodiment, a connecting flange 10 is also included, which is fixed to the exhaust port of the exhaust pipe 19, and the mounting plate 1 is rotatably placed on the connecting flange 10 via a connecting structure.

[0029] In one embodiment, the connection structure is a movable hinge 11, which is located on the side of the mounting plate 1 and the connecting flange 10.

[0030] In one embodiment, the connection structure includes a first connecting portion 12 located on the side of the connecting flange 10 and a second connecting portion 13 located on the side of the mounting plate 1. The first connecting portion 12 and the second connecting portion 13 are provided with connecting holes 14, which are connected by a connecting shaft 15. In this design, the connecting shaft 15 acts as a lever fulcrum, enabling dynamic adjustment of the liquid weight in the water tank 2 in conjunction with the connecting shaft 15, thus efficiently converting the liquid weight in the water tank 2 into vertical sealing pressure.

[0031] In one embodiment, a high-temperature resistant sealing gasket 16 is also included, which is disposed between the mounting plate 1 and the connecting flange 10.

[0032] In one embodiment, the mounting plate 1 is a blind plate.

[0033] This invention utilizes the lever principle to dynamically adjust the pressure of the boiling pot. When the pressure in the exhaust pipe 19 is normal, the mounting plate 1 seals the exhaust port under gravity. When the pressure increases, the steam pushes the mounting plate 1 upward, causing the water tank 2 to tilt and discharge liquid through the upper opening to reduce the sealing pressure and achieve pressure relief. When the pressure decreases, atmospheric pressure increases the clamping force of the mounting plate 1, preventing air infiltration. After the pressure recovers, the water inlet control valve 4 replenishes liquid to the set level to reset the seal. This device dynamically adjusts the sealing pressure by the liquid level, avoiding the "blow-through" or "suction-through" failure problems of traditional water seals, reducing steam leakage and air infiltration to maintain system thermal balance. Simultaneously, it achieves fully automated operation through the linkage of the liquid level sensor 3 and the water inlet control valve 4, combining mechanical structural reliability with energy efficiency.

[0034] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. An adjustable safety device for the steam vent pipe of a boiling pot, characterized in that, include: The mounting plate is foldably mounted on the exhaust port of the exhaust pipe. It has a sealed state and a pressure relief state. In the sealed state, the exhaust port is closed. When the pressure in the exhaust pipe exceeds a preset value, it is lifted and flipped upward to switch from the sealed state to the pressure relief state. It is reset after the pressure is restored. A water tank is fixed to the upper side of the mounting plate, with an opening at the top that tilts or returns to its original position as the mounting plate is rotated. A liquid level sensor, installed on the water tank, is used to detect the water level. The water inlet control assembly includes a water inlet control valve, which is connected to an external water source via a water inlet pipe. The water inlet control valve opens and closes according to the signal from the liquid level sensor to replenish water after the water tank is reset.

2. The adjustable safety device according to claim 1, characterized in that: The water tank is provided with a water inlet, which is connected to the water inlet pipe; or, the water outlet of the water inlet pipe is located above the water tank.

3. The adjustable safety device according to claim 2, characterized in that: It also includes a water outlet control valve, and the water tank is also provided with a water outlet, which is connected to an external drainage point through a water outlet pipe, and the water outlet control valve is located on the water outlet pipe.

4. The adjustable safety device according to claim 3, characterized in that: A first flexible hose and a second flexible hose are respectively provided between the water inlet and the water inlet pipe, and between the water outlet and the water outlet pipe.

5. The adjustable safety device according to claim 4, characterized in that: Both the first hose and the second hose are metal hoses.

6. The adjustable safety device according to claim 1, characterized in that: It also includes a connecting flange, which is fixed to the exhaust port of the exhaust pipe, and the mounting plate is rotatably placed on the connecting flange through a connecting structure.

7. The adjustable safety device according to claim 6, characterized in that: The connection structure is a movable hinge, which is located on the side of the mounting plate and the connecting flange.

8. The adjustable safety device according to claim 6, characterized in that: The connection structure includes a first connection part located on the side of the connecting flange and a second connection part located on the side of the mounting plate. The first connection part and the second connection part are provided with connection holes, and the connection holes on the first connection part and the second connection part are connected by a connecting shaft.

9. The adjustable safety device according to claim 6, characterized in that: It also includes a high-temperature resistant sealing gasket, which is disposed between the mounting plate and the connecting flange.

10. The adjustable safety device according to claim 1, characterized in that: The mounting plate is a blind plate.

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