Efficient ventilation and explosion-proof device for chemical plant

Abstract

The utility model relates to a chemical production technical field especially relates to a high -efficient ventilation explosion -proof device for chemical plant. Its technical scheme includes: the air duct and explosion -proof subassembly, the air duct is equipped with the fan in, the explosion -proof subassembly is located one end outside of the air duct, the explosion -proof subassembly includes the cone bucket, base block, diaphragm and baffle, the outer wall of cone bucket is equipped with the connecting frame, the other end of connecting frame is located the inner wall of air duct, the diaphragm is located one end opening at cone bucket, the base block is located the other end opening of cone bucket, the baffle is slidably located on base block and is jammed the opening of cone bucket under the elastic force of spring, the inside of cone bucket is filled with fire -extinguishing dry powder. The utility model has ventilation and explosion -proof function, response sensitive, reasonable in structure, safe and reliable, especially suitable for chemical plant, storage base, pharmaceutical workshop and other higher industrial sites of the requirement of explosion -proof, has good practicality and popularization value.

Description

Technical Field

[0001] This utility model relates to the field of chemical production technology, and in particular to a high-efficiency ventilation and explosion-proof device for chemical plant buildings. Background Technology

[0002] In industrial sites with explosion risks, such as chemical plants, ventilation systems not only serve the functions of daily air circulation and the emission of harmful gases, but are also a crucial component for ensuring safe production. However, traditional ventilation devices mostly focus only on gas exchange efficiency and lack effective explosion-proof and flameproof structural designs. In the event of an explosion, the shock wave can easily propagate rapidly along the ventilation ducts, triggering secondary explosions or widespread fires, causing serious casualties and property damage.

[0003] Furthermore, existing explosion-proof devices are complex in structure and slow in response. Some devices rely on electronic sensing or manual activation, resulting in problems such as delayed response and difficult maintenance. They are unable to meet the dual requirements of modern factories for high ventilation efficiency and rapid explosion-proof response. Therefore, there is an urgent need for a ventilation explosion-proof device that is simple in structure, reliable in operation, and highly integrated with ventilation and explosion-proof functions to improve the overall safety level and operational efficiency of the plant.

[0004] Therefore, we propose a high-efficiency ventilation and explosion-proof device for chemical plant buildings to solve the existing problems. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a high-efficiency ventilation and explosion-proof device for chemical plant buildings.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency ventilation and explosion-proof device for chemical plant buildings, comprising a ventilation duct and an explosion-proof component, wherein a fan is provided inside the ventilation duct, and the explosion-proof component is located outside one end of the ventilation duct;

[0007] The explosion-proof assembly includes a cone, a base block, a diaphragm, and a baffle. The outer wall of the cone is provided with a connecting frame, and the other end of the connecting frame is located on the inner wall of the air duct. The diaphragm is located at one end opening of the cone, and the base block is located at the other end opening of the cone. The baffle is slidably mounted on the base block and blocks the opening of the cone under the elastic force of a spring. The interior of the cone is filled with fire extinguishing dry powder.

[0008] Preferably, the outer wall of the large-diameter end of the cone is provided with an annular block, and the diaphragm is located at the center of the annular block.

[0009] Preferably, the outer wall of the base block is provided with a cross-shaped component, and the central axis of the baffle is provided with a sliding rod, which is slidably inserted into the middle position of the cross-shaped component.

[0010] Preferably, the other end of the slide rod is threaded with a wind plate, and a spring is movably sleeved on the slide rod. One end of the spring abuts against the cross member, and the other end of the spring abuts against the wind plate. The original length of the spring is greater than the length of the slide rod.

[0011] Preferably, a sealing gasket is provided at the contact position between the baffle and the cone.

[0012] Preferably, mounting holes are symmetrically provided at both ends of the air duct, and each mounting hole is distributed in a ring array at both ends of the air duct.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This utility model is a high-efficiency ventilation and explosion-proof device for chemical plants. During use, the device can be installed in the ventilation duct of the chemical plant through the mounting holes and anchor bolt structure. Multiple devices can be connected in series in the duct, and then connected to an external power source to work the fan to accelerate the air flow, thereby completing the ventilation operation of the plant through the duct.

[0015] Under normal conditions, the normal airflow within the air duct does not affect the position of the air deflector due to the elastic force of the spring. When an explosion occurs, the shock wave of the explosion propagates along the air duct. At this time, the high-speed airflow impacts the air deflector, which in turn drives the sliding rod to slide on the cross joint. The sliding rod then moves the baffle away from the inner wall of the cone, and the high-speed airflow rushes into the cone through the gap between the cone and the baffle. The fire extinguishing dry powder inside the cone is then sprayed out under the pressure of the baffle and the airflow, breaking through the diaphragm and forming a fire extinguishing powder mist area without blind spots. This suppresses the explosion flame, effectively blocks the propagation of the explosion within the air duct, and avoids more harmful continuous explosions, thus playing a role in explosion prevention and explosion isolation.

[0016] This utility model integrates a fan structure inside the ventilation duct. The fan is driven by an external power source, which effectively accelerates airflow, improves ventilation efficiency, and helps to quickly remove harmful or flammable gases from the factory, thereby improving air quality.

[0017] Under normal ventilation conditions, the spring force ensures that the air vane is in a stable position and is not disturbed by airflow; when the explosion shock wave arrives, the high-speed airflow pushes the air vane, slide bar and baffle structure to move quickly, so that the fire extinguishing dry powder is released in time, effectively suppressing the flame and cutting off the propagation path of the explosion wave in the air duct.

[0018] The fire extinguishing dry powder inside the cone structure is compressed and ruptures the diaphragm before being sprayed evenly, forming a wide-covering powder mist area. This enables rapid and all-round suppression of fire sources in the duct, improving fire extinguishing efficiency and reducing the risk of secondary disasters. Attached Figure Description

[0019] Figure 1This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the explosion-proof component structure of this utility model;

[0022] Figure 4 For the present utility model Figure 3 A cross-sectional structural diagram.

[0023] Figure label:

[0024] 1. Air duct; 2. Mounting hole; 3. Connecting frame; 4. Explosion-proof component; 401. Conical barrel; 402. Base block; 403. Air vane; 404. Spring; 405. Ring block; 406. Diaphragm; 407. Baffle; 408. Cross component; 409. Slide rod; 5. Fan. Detailed Implementation

[0025] 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.

[0026] Example 1

[0027] like Figures 1-4 As shown, this utility model proposes a high-efficiency ventilation and explosion-proof device for chemical plants, including a ventilation duct 1 and an explosion-proof component 4. A fan 5 is installed inside the ventilation duct 1. During use, this high-efficiency ventilation and explosion-proof device for chemical plants can be installed in the ventilation duct of the chemical plant through the mounting holes 2 and anchor bolts. Multiple devices can be connected in series in the duct, and then connected to an external power source. The fan 5 accelerates airflow, thereby completing the ventilation operation of the plant through the duct. This device has a compact overall structure, flexible installation, and good modular characteristics. When multiple devices are connected in series, it can significantly improve the overall air circulation efficiency of the plant, effectively remove harmful gases, and improve the air quality and safety of the working environment. The fan 5, as the power core, can be selected with different power and air volume specifications according to different operating conditions to meet the needs of various application scenarios.

[0028] Example 2

[0029] like Figures 1-4As shown, this utility model proposes a high-efficiency ventilation explosion-proof device for chemical plant buildings. Compared with Embodiment 1, this embodiment further includes: an explosion-proof component 4 disposed on the outside of one end of the ventilation duct 1. The explosion-proof component 4 includes a cone 401, a base block 402, a diaphragm 406, and a baffle 407. The outer wall of the cone 401 is provided with a connecting frame 3, and the other end of the connecting frame 3 is disposed on the inner wall of the ventilation duct 1. The diaphragm 406 is disposed at the opening at one end of the cone 401. The base block 402 is disposed at the opening at the other end of the cone 401. The outer wall of the base block 402 is provided with a cross member 408. A sliding rod 409 is provided at the central axis of the baffle 407, and the sliding rod 409 slides. A slide rod 409 is inserted into the middle position of the cross member 408. The other end of the slide rod 409 is threaded with a wind plate 403. A spring 404 is movably sleeved on the slide rod 409. One end of the spring 404 abuts against the cross member 408, and the other end abuts against the wind plate 403. The original length of the spring 404 is greater than the length of the slide rod 409. A baffle 407 is slidably mounted on the base block 402 and, under the elastic force of the spring 404, blocks the opening of the cone 401. The cone 401 is filled with fire extinguishing dry powder. A ring block 405 is provided on the outer wall of the large-diameter end of the cone 401, and a diaphragm 406 is located at the center of the ring block 405. The explosion-proof component 4, as a key safety structure of this device, can quickly respond and actively release fire extinguishing dry powder in the event of an explosion. It has efficient explosion suppression and explosion-proof functions. Its internal structure is designed based on the principle of pneumatic and mechanical linkage, ensuring that it remains sealed and stable in a non-explosive state and responds to sudden changes in air pressure in a very short time, achieving high responsiveness and high reliability of the fire extinguishing function.

[0030] Under normal conditions, the normal airflow within the air duct does not affect the position of the air baffle 403 due to the elastic force of the spring 404. When an explosion occurs, the shock wave propagates along the air duct. At this time, the high-speed airflow impacts the air baffle 403. When the impact force exceeds the set elastic force of the spring 404, the air baffle 403 drives the sliding rod 409 to slide on the cross member 408. The sliding rod 409 then moves the baffle 407 away from the inner wall of the cone 401, and the high-speed airflow rushes into the cone 401 through the gap between the cone 401 and the baffle 407. The fire extinguishing dry powder inside the cone 401 is then extinguished. Under the pressure of the baffle 407 and the airflow, the diaphragm 406 is ruptured and sprayed out, forming a blind-spot-free fire extinguishing powder mist area. This suppresses the explosion flame, effectively blocks the propagation of the explosion within the air duct, and avoids more harmful continuous explosions, thus playing a role in explosion prevention and explosion isolation. In the above process, the diaphragm 406, as a disposable safety release element, can be made of easily breakable materials such as graphite paper and aluminum foil, depending on the requirements, to ensure that it can be opened quickly under the impact of the explosion to release dry powder, while preventing false activation. The fire extinguishing dry powder can be of ABC class multifunctional powder, suitable for various chemical fire scenarios.

[0031] A sealing gasket is provided at the contact point between the baffle 407 and the cone 401. The sealing gasket can be made of high-temperature silicone or fluororubber to ensure that it maintains its sealing performance under harsh conditions such as high temperature and high-speed airflow, effectively preventing dry powder leakage or backflow of ambient air, and improving the overall sealing and safety performance.

[0032] The ventilation duct 1 has symmetrical mounting holes 2 at both ends. The mounting holes 2 are arranged in a ring array at both ends of the ventilation duct 1. This structural design facilitates the quick connection of the device with various ventilation duct systems, has strong adaptability, and also facilitates later maintenance and replacement, thus improving the efficiency of engineering installation.

[0033] It should be noted that the structure of fan 5 is a mature existing technology, and its working principle and internal structure are known to those skilled in the art. This utility model only utilizes its function and does not improve its internal structure. Therefore, it will not be described in detail here. Those skilled in the art can make any selection according to their needs or convenience. Users can select different models of fans according to actual ventilation needs, such as axial flow type, centrifugal type, etc., and select explosion-proof fans that meet the GB3836 standard according to explosion-proof requirements to further improve the safety level of the overall device.

[0034] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-efficiency ventilation explosion-proof device for chemical plant buildings, comprising a ventilation duct (1) and explosion-proof components (4), characterized in that: The air duct (1) is equipped with a fan (5), and the explosion-proof component (4) is located outside one end of the air duct (1); The explosion-proof component (4) includes a cone (401), a base block (402), a diaphragm (406), and a baffle (407). The outer wall of the cone (401) is provided with a connecting frame (3), and the other end of the connecting frame (3) is provided on the inner wall of the air duct (1). The diaphragm (406) is provided at one end of the cone (401), and the base block (402) is provided at the other end of the cone (401). The baffle (407) is slidably provided on the base block (402) and blocks the opening of the cone (401) under the elastic force of the spring (404). The interior of the cone (401) is filled with fire extinguishing dry powder.

2. The high-efficiency ventilation and explosion-proof device for chemical plant buildings according to claim 1, characterized in that: The outer wall of the large-diameter end of the cone (401) is provided with a ring block (405), and the diaphragm (406) is located at the center of the ring block (405).

3. The high-efficiency ventilation and explosion-proof device for chemical plant buildings according to claim 1, characterized in that: The outer wall of the base block (402) is provided with a cross member (408), and the central axis of the baffle (407) is provided with a slide rod (409), which is slidably inserted into the middle position of the cross member (408).

4. The high-efficiency ventilation and explosion-proof device for chemical plant buildings according to claim 3, characterized in that: The other end of the slide rod (409) is threaded with a wind plate (403). A spring (404) is movably sleeved on the slide rod (409). One end of the spring (404) abuts against the cross member (408), and the other end of the spring (404) abuts against the wind plate (403). The original length of the spring (404) is greater than the length of the slide rod (409).

5. The high-efficiency ventilation and explosion-proof device for chemical plant buildings according to claim 1, characterized in that: A sealing gasket is provided at the contact position between the baffle (407) and the cone (401).

6. The high-efficiency ventilation and explosion-proof device for chemical plant buildings according to claim 1, characterized in that: The air duct (1) has symmetrical mounting holes (2) at both ends, and each mounting hole (2) is arranged in a ring array at both ends of the air duct (1).

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