Portable mine Y-type inverter

Abstract

The utility model relates to the technical field of mine ventilation, more specifically, relates to a portable mine Y type inverter. The device is connected with main fan equipment, spare fan equipment, and includes Y type runner assembly, air door component and common ventilation pipeline, the branch runner side of Y type runner assembly is connected with main fan equipment, spare fan equipment, and the other side is communicated with common ventilation pipeline, forms the passageway that supplies air to circulate, air door component sets up between the branch runner of Y type runner assembly and main fan equipment, spare fan equipment, is used for controlling the on-off of corresponding branch runner. The device solves the problem that the existing steel inverter is heavy and inconvenient to go down the well, and solves the problem that the service time of the equipment is short due to the damage of soft cloth air door. The utility model mainly applies to the field of portable mine Y type inverter.

Description

Technical Field

[0001] This utility model relates to the field of mine ventilation technology, and more specifically, to a lightweight Y-type switch for mining. Background Technology

[0002] The Y-type airflow converter is a key piece of equipment in local ventilation systems in underground coal mines, typically used in complete systems consisting of two local ventilation units. In this system, one fan serves as the main fan for daily ventilation, while the other acts as a standby fan. The two are effectively connected via the Y-type airflow converter and share the same ventilation duct system. This design ensures that if the main fan fails and stops operating, the standby fan can quickly start and take over the ventilation work, effectively preventing ventilation outages underground and guaranteeing continuous mine ventilation and operational safety.

[0003] Currently, traditional Y-type flow dividers are mostly made of steel. Although they have high structural strength, their large overall size makes transportation and installation in confined underground environments inconvenient, affecting user acceptance. To reduce equipment weight and facilitate handling, some improvement plans have attempted to replace the entire divider with PVC soft cloth. However, in actual use, dividers made of such soft materials are prone to aging, wear, and even breakage due to long-term exposure to airflow impact, environmental corrosion, and mechanical vibration, resulting in a shorter service life and failing to meet the reliability and durability requirements of mine ventilation systems. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, this utility model provides a lightweight mining Y-type switch. This switch solves the problems of the existing steel switch being heavy and inconvenient to lower into the mine, and also solves the problem of short equipment service life caused by damage to the soft cloth air damper.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A lightweight mining Y-type switch is disclosed. The device is connected to a main ventilation fan and a standby ventilation fan. It includes a Y-type flow channel assembly, an air damper assembly, and a common ventilation duct. One branch flow channel of the Y-type flow channel assembly is connected to the main ventilation fan and the standby ventilation fan, and the other side is connected to the common ventilation duct, forming a channel for air supply. The air damper assembly is disposed between the branch flow channel of the Y-type flow channel assembly and the main ventilation fan and the standby ventilation fan, and is used to control the opening and closing of the corresponding branch flow channel.

[0006] The Y-shaped flow channel assembly includes three ventilation ducts and a fan connecting pipe. The three ventilation ducts have a main interface and two branch interfaces. The main interface is used to connect to a common ventilation duct. The two branch interfaces are respectively connected to the main fan equipment and the standby fan equipment through the fan connecting pipe. The damper assembly is set inside the fan connecting pipe.

[0007] The three ventilation ducts are made of PVC material.

[0008] A sealing element is provided at the interface between the fan connecting pipe and the three-way ventilation duct; the sealing element is made of elastic rubber material and is used to fill the gap between the interface between the fan connecting pipe and the three-way ventilation duct to prevent air leakage.

[0009] The damper assembly includes a damper body and a fixing plate. The two ends of the fixing plate are fixedly connected to the fan connecting pipe. The damper body is symmetrically arranged on both sides of the fixing plate to close the fan connecting pipe. The damper body is connected to the fixing plate by a spring hinge.

[0010] The damper body is made of Q235 steel, and a wear-resistant layer is provided on the edge of the damper body. The wear-resistant layer is made of silicon carbide, which can reduce the wear of the damper body during the opening and closing process.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention constructs a clearly structured switching channel by setting up an integrated Y-shaped flow channel assembly and a dedicated damper assembly. When the main ventilation fan fails, the change in airflow pressure automatically drives the damper on the standby fan side to open, while the damper on the main fan side automatically closes under the action of spring hinges, achieving a seamless and rapid switch from the main fan to the standby fan. This process requires no manual intervention or complex mechanical operation, greatly shortening ventilation interruption time and effectively ensuring continuous safety and production efficiency in mine operations. The core Y-shaped flow channel assembly is made of PVC material, which is significantly lighter than traditional metal ducts, facilitating transportation and installation in narrow and complex underground spaces. At the same time, the lightweight design reduces the load on the supporting structure and simplifies foundation construction. The fan connecting pipe and the three ventilation duct adopt a separate design and are connected through a standard interface, making the replacement of locally damaged parts more convenient and greatly reducing maintenance difficulty and time costs. The damper assembly adopts a symmetrical design and is connected by spring hinges, giving the damper automatic reset and unidirectional opening and closing functions, with sensitive and reliable operation. The damper body is made of Q235 steel, ensuring that it has sufficient strength to withstand frequent opening and closing and system pressure shocks. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2This is a side view of the damper assembly of this utility model; Figure 3 This is a front view of the damper assembly of this utility model; In the diagram: 1 is the main fan equipment, 2 is the standby fan equipment, 3 is the three-way ventilation duct, 4 is the common ventilation duct, 5 is the fan connection pipe, 6 is the damper body, 7 is the fixing plate, and 8 is the spring hinge. Detailed Implementation

[0013] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0014] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0015] like Figures 1 to 3 As shown, a lightweight Y-type switcher for mining applications is disclosed. This device is mainly used in mine ventilation systems to achieve rapid switching between the main ventilation fan 1 and the standby ventilation fan 2, ensuring ventilation continuity and safety. The switcher includes a Y-shaped flow channel assembly, an air damper assembly, and a common ventilation duct 4. Two branch flow channels of the Y-shaped flow channel assembly are connected to the main ventilation fan 1 and the standby ventilation fan 2 respectively, while the other side is connected to the common ventilation duct 4, forming a channel for airflow. The air damper assembly is located between the branch flow channels of the Y-shaped flow channel assembly and the main ventilation fan 1 and the standby ventilation fan 2, and is used to control the opening and closing of the corresponding branch flow channels, thereby achieving directional airflow distribution and fault switching. This compact design facilitates installation and operation in confined mine environments, while the use of lightweight materials reduces the overall weight, improving portability and maintenance efficiency.

[0016] Preferably, the Y-shaped flow channel assembly includes a three-way ventilation duct 3 and a fan connecting pipe 5. The three-way ventilation duct 3 has one main interface and two branch interfaces. The main interface is used to connect to the common ventilation duct 4, and the two branch interfaces are respectively connected to the main fan equipment 1 and the standby fan equipment 2 via the fan connecting pipe 5. A damper assembly is installed inside the fan connecting pipe 5 to achieve precise control of the airflow channel. The three-way ventilation duct 3 adopts a Y-shaped structure design, and the included angle between the branch interfaces is preferably 45° to 90° to optimize aerodynamic performance and reduce eddies and pressure loss. The fan connecting pipe 5 is fixed to the three-way ventilation duct 3 by a flange or threaded connection to ensure airtightness and structural stability at the interface.

[0017] Preferably, the three ventilation ducts 3 are made of PVC material. PVC material has advantages such as being lightweight, corrosion-resistant, and anti-aging, making it suitable for the harsh environment of high humidity and high dust in mines. Its smooth inner wall can effectively reduce airflow resistance and improve ventilation efficiency. In addition, PVC material is inexpensive, easy to process and mold, and convenient for large-scale production and on-site replacement.

[0018] Preferably, a seal is provided at the interface between the fan connecting pipe 5 and the three-way ventilation duct 3. The seal is made of elastic rubber, such as nitrile rubber or silicone rubber, which has excellent compression set and weather resistance. This seal fills the gap between the fan connecting pipe 5 and the three-way ventilation duct 3, achieving dynamic sealing through pre-tightening, effectively preventing airflow leakage and ensuring the reliability of the ventilation system under high pressure differential conditions. The seal's cross-sectional shape can be designed as O-ring or rectangular to accommodate different interface sizes and can be easily replaced after long-term use, extending the device's lifespan.

[0019] Preferably, the damper assembly includes a damper body 6 and a fixing plate 7. The fixing plate 7 is fixedly connected to the fan connecting pipe 5 at both ends by welding or bolts. The damper body 6 is symmetrically arranged on both sides of the fixing plate 7 to achieve closure of the fan connecting pipe 5. The damper body 6 is connected to the fixing plate 7 via a spring hinge 8. The spring hinge 8 provides the necessary torque, allowing the damper body 6 to automatically remain closed without external force. When the fan starts, the air pressure pushes the damper body 6 open, forming a one-way valve function. This design simplifies the operation process, eliminates the need for an additional power source, and improves the automation and reliability of the system. The opening angle of the damper body 6 is adjustable, preferably from 0° to 90°, to adapt to different airflow requirements.

[0020] Preferably, the damper body 6 is made of Q235 steel, a material with high strength and good toughness, capable of withstanding frequent mechanical impacts and vibrations in mines. A wear-resistant layer is provided on the edge of the damper body 6. This wear-resistant layer is made of silicon carbide and is attached to the edge of the damper through spraying or inlaying processes. Silicon carbide has high hardness and a low coefficient of friction, which can significantly reduce wear during the opening and closing of the damper body and extend its service life. Furthermore, the surface of the damper body 6 can be treated with rust prevention, such as galvanizing or epoxy resin coating, to enhance corrosion resistance.

[0021] In practical implementation, the installation steps of this Y-type switcher include: first, connecting the main interface of the three ventilation ducts 3 to the common ventilation duct 4 and securing it with seals; then, connecting the fan connecting pipes 5 to the outlet ends of the main fan equipment 1 and the standby fan equipment 2 respectively; finally, adjusting the positions of the fixing plate 7 and the damper body 6 of the damper assembly to ensure that it can flexibly respond to changes in air pressure. In practical applications, this device can significantly improve the switching efficiency of the mine ventilation system, reduce downtime, and reduce maintenance costs and failure rates through its lightweight and wear-resistant design.

[0022] The above description only details the preferred embodiments of the present utility model. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model, and all such changes should be included within the protection scope of the present utility model.

Claims

1. A lightweight mining Y-type switch, the device being connected to a main ventilation fan (1) and a standby ventilation fan (2), characterized in that: It includes a Y-shaped flow channel assembly, a damper assembly, and a common ventilation duct (4). The branch flow channel of the Y-shaped flow channel assembly is connected to the main fan equipment (1) and the standby fan equipment (2) on one side, and connected to the common ventilation duct (4) on the other side to form a channel for air supply. The damper assembly is set between the branch flow channel of the Y-shaped flow channel assembly and the main fan equipment (1) and the standby fan equipment (2) to control the opening and closing of the corresponding branch flow channel.

2. The lightweight mining Y-type switch according to claim 1, characterized in that: The Y-shaped flow channel assembly includes a three-ventilation duct (3) and a fan connecting pipe (5). The three-ventilation duct (3) has a main interface and two branch interfaces. The main interface is used to connect to a common ventilation duct (4). The two branch interfaces are respectively connected to the main fan equipment (1) and the standby fan equipment (2) through the fan connecting pipe (5). The damper assembly is set inside the fan connecting pipe (5).

3. A lightweight mining Y-type switch according to claim 2, characterized in that: The three ventilation ducts (3) are made of PVC material.

4. A lightweight mining Y-type switch according to claim 2, characterized in that: A sealing element is provided at the interface between the fan connecting pipe (5) and the three-way ventilation pipe (3); the sealing element is made of elastic rubber material and is used to fill the gap between the interface between the fan connecting pipe (5) and the three-way ventilation pipe (3) to prevent air leakage.

5. A lightweight mining Y-type switch according to claim 2, characterized in that: The damper assembly includes a damper body (6) and a fixing plate (7). The two ends of the fixing plate (7) are fixedly connected to the fan connecting pipe (5). The damper body (6) is symmetrically arranged on both sides of the fixing plate (7) to close the fan connecting pipe (5). The damper body (6) is connected to the fixing plate (7) by a spring hinge (8).

6. A lightweight mining Y-type switch according to claim 5, characterized in that: The damper body (6) is made of Q235 steel. The edge of the damper body (6) is provided with a wear-resistant layer made of silicon carbide, which can reduce the wear of the damper body during opening and closing.

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