Double-fan automatic switching intensive installation device

Abstract

The utility model relates to the technical field of coal mine underground ventilation equipment, and particularly discloses a double-fan automatic switching intensive installation device which comprises a roadway air duct used for being connected with a tunneling working face ventilation system. The section of the air duct switching device is trapezoidal, the small end of the air duct switching device is communicated with the roadway air duct, and the large end of the air duct switching device is communicated with the double-fan box frame; the double-fan box frame comprises a first-layer box frame and a second-layer box frame which are stacked up and down, and fan fixing bases are arranged in the first-layer box frame and the second-layer box frame respectively and used for installing a main fan and a standby fan; the triangular air duct is arranged in the air duct switching device, an air outlet of the triangular air duct is communicated with the roadway air duct, and two air inlets of the triangular air duct are communicated with the first-layer box frame and the second-layer box frame respectively; according to the double-fan automatic switching intensive mounting device, through the design of one-key fan switching, centralized mounting and fixing, stable structure, easy maintenance and the like, the effects of improving the working efficiency, reducing the safety risk and facilitating moving and centralized management are achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of underground ventilation equipment in coal mines, and specifically discloses a dual-fan automatic switching compact installation device. Background Technology

[0002] In coal mine tunneling operations, to ensure safe production, two local ventilation fans need to be installed at the tunneling face to achieve a "one in use, one on standby" ventilation mode. According to relevant regulations, the main and standby fans must be switched once a day. However, the traditional method of installing local ventilation fans has many drawbacks.

[0003] In existing technologies, most ventilation fans are hoisted using anchor bolts or cables, or directly fixed within the roadway. This installation method suffers from issues such as improper hoisting and poor stability, severely impacting the reliability of the ventilation system. During fan switching, current technologies cannot achieve automatic switching; operators must perform cumbersome procedures, increasing workload, prolonging switching time, and reducing efficiency. Furthermore, traditional installation methods require frequent installation and removal of fans when moving the tunnel face. This process is not only resource-intensive but also poses significant safety risks, potentially leading to accidents.

[0004] With the development of intelligent and efficient production in coal mines, the existing methods of installing and switching local ventilation fans can no longer meet the actual production requirements. There is an urgent need for a compact installation device that can achieve automatic switching between dual fans, convenient installation and relocation, and safety and reliability. Utility Model Content

[0005] This utility model proposes a dual-fan automatic switching compact installation device. Through compact design, automatic switching structure and modular frame, it realizes one-button switching of dual fans, stable installation, convenient relocation and safe maintenance, which significantly improves the reliability, safety and working efficiency of the ventilation system.

[0006] This utility model is implemented as follows: a compact installation device for automatic switching of dual fans, comprising:

[0007] The tunnel ventilation duct is used to connect to the ventilation system of the tunneling face;

[0008] The horizontally set ventilation duct switching device has a trapezoidal cross-section, with its small end connected to the roadway ventilation duct and its large end connected to the double fan box frame.

[0009] The dual-fan housing frame includes a first-layer housing frame and a second-layer housing frame stacked on top of each other. The first-layer housing frame and the second-layer housing frame are respectively provided with fan fixing bases for installing the main fan and the standby fan.

[0010] A triangular ventilation duct is located inside the ventilation duct switching device. Its air outlet is connected to the roadway ventilation duct, and its two air inlets are connected to the first layer box frame and the second layer box frame, respectively.

[0011] As a preferred embodiment of the dual-fan automatic switching compact installation device of this utility model, the diameter of the tunnel ventilation duct is 1000mm;

[0012] The height of the air duct switching device is 3000mm, the upper side length is 1300mm, and the bottom side length is 2900mm.

[0013] The length of the first and second layer of the cabinet is 3200mm, the height is 1450mm, and the width is 1300mm.

[0014] As a preferred embodiment of the dual-fan automatic switching compact installation device of this utility model, the duct switching device and the dual-fan box frame are fixed with M16 bolts and No. 5 flange angle steel. The No. 5 flange angle steel connection is wrapped with rubber for sealing and shock absorption.

[0015] As a preferred embodiment of the dual-fan automatic switching compact installation device of this utility model, the dual-fan housing frame adopts a No. 11 I-beam welded frame. The No. 11 I-beam welded frame is covered with detachable No. 2 steel plate covers on both sides. The covers are composed of two halves joined together and fixed with M8 bolts. The joint of the detachable No. 2 steel plate is provided with a sealing gasket to prevent air leakage.

[0016] As a preferred embodiment of the dual-fan automatic switching compact installation device of this utility model, the two air inlets of the triangular air duct are respectively aligned with the fan installation positions of the first and second layer box frames to ensure unobstructed airflow switching.

[0017] As a preferred embodiment of the dual-fan automatic switching compact installation device of this utility model, the fan fixing base is a semi-circular steel frame welded to the I-beam crossbeam of the dual-fan box frame, and the inner wall of the fan fixing base is provided with a rubber pad.

[0018] As a preferred embodiment of the dual-fan automatic switching compact installation device of this utility model, the dual-fan box frame is equipped with an inspection door, the door frame of the inspection door is hinged to a steel plate, the door gap is inlaid with a fireproof sealing strip, and is equipped with a rotary eccentric locking handle.

[0019] As a preferred embodiment of the dual-fan automatic switching compact installation device of this utility model, the outer wall of the air duct switching device is provided with a lifting ring for easy installation and relocation.

[0020] The beneficial effects of this utility model are:

[0021] 1. Operators only need to turn two fan switches on and off to switch the fans, reducing the time required to switch the work face with two fans once a day during the morning shift from 1 hour to 3 minutes, which greatly improves work efficiency.

[0022] 2. The dual fan box frame installs two fans together without the need for lifting or ground anchoring. It can be automatically moved as the tunnel face moves, reducing the risk of frequent installation and dismantling and greatly reducing the probability of safety accidents.

[0023] 3. The device has a simple structure and is easy to maintain. It adopts reasonable design and high-quality manufacturing materials, which ensures stability and safety during the switching and relocation of the two fans.

[0024] 4. The two fans are installed together in the dual fan housing, which facilitates unified management and maintenance of the fans and improves management efficiency. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0027] Figure 2 for Figure 1 A schematic diagram of the AA-direction cross-section structure.

[0028] Figure 3 for Figure 1 BB-direction cross-sectional structural schematic diagram

[0029] The markings in the diagram are: 1. Roadway ventilation duct; 2. Ventilation duct switching device; 3. Double fan housing frame; 4. First layer housing frame; 5. Second layer housing frame; 6. Fan mounting base; 7. Triangular ventilation duct; 8. Rubber pad; 9. Inspection door; 10. Lifting ring. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0031] Please see Figure 1-3 A compact installation device for automatic switching between two fans, comprising:

[0032] 1. Ventilation duct for tunneling face, used to connect to the ventilation system of the tunneling face;

[0033] The horizontally set ventilation duct switching device 2 has a trapezoidal cross-section, with its small end connected to the roadway ventilation duct 1 and its large end connected to the double fan box frame 3.

[0034] The dual-fan housing frame 3 includes a first-layer housing frame 4 and a second-layer housing frame 5 stacked on top of each other. The first-layer housing frame 4 and the second-layer housing frame 5 are respectively provided with fan fixing bases 6 for installing the main fan and the standby fan.

[0035] The triangular ventilation duct 7 is located inside the ventilation duct switching device 2. Its air outlet is connected to the roadway ventilation duct 1, and its two air inlets are connected to the first layer box frame 4 and the second layer box frame 5, respectively.

[0036] In this embodiment: by connecting the air outlet of the roadway ventilation duct 1 to the air outlet of the ventilation duct switching device 2, and connecting the two air inlets of the triangular ventilation duct 7 inside the ventilation duct switching device 2 to the main fan and the standby fan in the double fan box frame 3 respectively, a complete ventilation system is formed; when the main fan is running, the airflow starts from the main fan, enters the ventilation duct switching device 2 through the triangular ventilation duct 7, and is then transported to the tunneling face through the roadway ventilation duct 1; when it is necessary to switch to the standby fan, simply turn off the main fan switch and turn on the standby fan switch, and the airflow can start from the standby fan, switch to the roadway ventilation duct 1 through the triangular ventilation duct 7, and realize the automatic switching of the fans; the whole process does not require frequent manual connection and disassembly of the ventilation ducts, and can be completed through electrical control.

[0037] As a technical optimization of this utility model, the diameter of the tunnel ventilation duct 1 is 1000mm;

[0038] The height of the air duct switching device 2 is 3000mm, the upper side length is 1300mm, and the bottom side length is 2900mm;

[0039] The length of the first layer of rack 4 and the length of the second layer of rack 5 are both 3200mm, the height is both 1450mm, and the width is both 1300mm.

[0040] In this embodiment, the specific dimensions of the roadway ventilation duct 1, the ventilation duct switching device 2, and the dual fan box frame 3 are limited. The reasonable size design ensures the overall structural rationality and stability of the device, ensuring that the device can be installed and used normally in the coal mine and meet the ventilation requirements.

[0041] As a technical optimization of this utility model, the air duct switching device 2 and the double fan box frame 3 are fixed with M16 bolts and No. 5 flange angle steel. The No. 5 flange angle steel connection is wrapped with rubber for sealing and shock absorption.

[0042] In this embodiment, M16 bolts and No. 5 flange angle steel are used for fixing, which ensures the connection strength and stability of the device. The rubber edging plays a role in sealing and shock absorption, which improves the reliability and safety of the device.

[0043] As a technical optimization of this utility model, the dual fan box frame 3 adopts a No. 11 I-beam welded frame. The No. 11 I-beam welded frame is covered with a detachable No. 2 steel plate cover on both sides. The cover is composed of two halves joined together and fixed with M8 bolts. The joint of the detachable No. 2 steel plate is provided with a sealing gasket to prevent air leakage.

[0044] In this embodiment, the use of No. 11 H-beam welded frame and No. 2 steel plate ensures the strength and stability of the frame. The design of detachable steel plate and sealing gasket facilitates the installation, inspection and maintenance of the fan, while preventing air leakage and ensuring the normal operation of the ventilation system.

[0045] As a technical optimization of this utility model, the two air inlets of the triangular air duct 7 are respectively aligned with the fan installation positions of the first layer box frame 4 and the second layer box frame 5 to ensure unobstructed airflow switching.

[0046] In this embodiment, the air inlet of the triangular duct 7 is opposite to the fan installation position to ensure unobstructed airflow switching, guarantee the continuity and stability of ventilation when the fan is switched, and improve the working efficiency of the device.

[0047] As a technical optimization of this utility model, the fan fixing base 6 is a semi-circular steel frame, welded to the I-beam crossbeam of the double fan box frame 3, and the inner wall of the fan fixing base 6 is provided with a rubber pad 8.

[0048] In this embodiment, the semi-circular steel frame is welded to the I-beam of the double fan box frame 3, which ensures the stability of the fan fixing. The use of rubber pads 8 reduces the vibration and noise during the operation of the fan and protects the fan.

[0049] As a technical optimization of this utility model, the double fan box frame 3 is provided with an inspection door 9. The door frame of the inspection door 9 is hinged to the steel plate, the door gap is inlaid with a fireproof sealing strip, and is equipped with a rotary eccentric locking handle.

[0050] In this embodiment: the design of the maintenance door 9 facilitates the daily maintenance and repair of the fan. The fireproof sealing strip and the rotary eccentric locking handle ensure the sealing and safety of the frame, preventing air leakage and the influence of external factors on the fan. The rotary eccentric locking handle makes it easy for operators to open and close the maintenance door 9, improving work efficiency.

[0051] As a technical optimization of this utility model, the outer wall of the air duct switching device 2 is provided with a lifting ring 10, which facilitates installation and relocation.

[0052] In this embodiment, the lifting ring 10 facilitates the installation and relocation of the device, improves the device's convenience, and meets the needs of relocation of underground tunneling faces in coal mines.

[0053] Working principle and usage process of this utility model:

[0054] Before construction at the coal mine tunneling face, according to design requirements, the dual-fan frame 3 is placed in a suitable position, and the frame is welded using No. 11 I-beams to ensure the stability of the frame. The main fan and the backup fan are installed on the fan fixing base 6 of the first layer frame 4 and the second layer frame 5, respectively. The rubber pad 8 on the inner wall of the fixing base reduces fan vibration. The ventilation duct switching device 2 is fixed to the dual-fan frame 3 with M16 bolts and No. 5 flange angle steel to ensure a firm connection. The air outlet is sealed with rubber edging and vibration damping. The roadway ventilation duct 1 is connected to the air outlet of the ventilation duct switching device 2. At the same time, the triangular ventilation duct 7 is installed inside the ventilation duct switching device 2 so that its two air inlets are connected to the main fan and the backup fan, respectively.

[0055] Daily operation: During normal operation, turn on the main fan switch, the main fan runs, and the airflow is delivered to the tunneling face through the triangular ventilation duct 7, the ventilation duct switching device 2 and the roadway ventilation duct 1 to meet the ventilation requirements;

[0056] Fan switching: When it is necessary to switch between the main and standby fans according to regulations, the operator only needs to turn off the main fan switch and turn on the standby fan switch to realize the automatic switching of the fans. The airflow will automatically switch from the standby fan to the tunnel ventilation duct 1 through the triangular ventilation duct 7 to ensure the continuity of ventilation.

[0057] Relocation and Maintenance: When the tunnel face needs to be relocated, the entire device can be moved to its position in one go using the lifting rings 10 on the outer wall of the ventilation duct switching device 2 and a trackless rubber-wheeled vehicle. During routine maintenance, the inspection door 9 of the double fan box frame 3 can be opened to inspect and maintain the fans. The fireproof sealing strip and the rotary eccentric locking handle of the inspection door 9 ensure the safety and sealing of the maintenance process. Alternatively, the steel plates on both sides of the double fan box frame 3 can be opened directly, and the main fan and the standby fan can be exposed after disassembly, making it easy to inspect and maintain.

[0058] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0059] However, the above are merely specific embodiments of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A compact installation device for automatic switching between two fans, characterized in that, include: The tunnel ventilation duct (1) is used to connect the ventilation system of the tunneling face; The horizontally set ventilation duct switching device (2) has a trapezoidal cross-section. Its small end is connected to the roadway ventilation duct (1), and its large end is connected to the double fan box frame (3). The dual fan frame (3) includes a first layer frame (4) and a second layer frame (5) stacked on top of each other. The first layer frame (4) and the second layer frame (5) are respectively provided with fan fixing bases (6) for installing the main fan and the standby fan. The triangular ventilation duct (7) is located inside the ventilation duct switching device (2). Its air outlet is connected to the roadway ventilation duct (1), and its two air inlets are connected to the first layer box frame (4) and the second layer box frame (5) respectively.

2. The dual-fan automatic switching compact installation device according to claim 1, characterized in that: The diameter of the ventilation duct (1) in the tunnel is 1000 mm; The height of the air duct switching device (2) is 3000mm, the upper side length is 1300mm, and the bottom side length is 2900mm; The length of the first layer of the box rack (4) and the second layer of the box rack (5) are both 3200mm, the height is both 1450mm, and the width is both 1300mm.

3. The dual-fan automatic switching compact installation device according to claim 1, characterized in that: The air duct switching device (2) and the double fan box frame (3) are fixed with M16 bolts and No. 5 flange angle steel. The No. 5 flange angle steel connection is wrapped with rubber for sealing and shock absorption.

4. The dual-fan automatic switching compact installation device according to claim 1, characterized in that: The dual fan frame (3) is made of No. 11 I-beam welded frame. The No. 11 I-beam welded frame is covered with detachable No. 2 steel plate covers on both sides. The covers are composed of two halves joined together and fixed with M8 bolts. The joint of the detachable No. 2 steel plate is provided with a sealing gasket to prevent air leakage.

5. The dual-fan automatic switching compact installation device according to claim 1, characterized in that: The two air inlets of the triangular duct (7) are respectively aligned with the fan installation positions of the first layer box frame (4) and the second layer box frame (5) to ensure unobstructed airflow switching.

6. The dual-fan automatic switching compact installation device according to claim 1, characterized in that: The fan mounting base (6) is a semi-circular steel frame welded to the I-beam crossbeam of the double fan box frame (3). The inner wall of the fan mounting base (6) is provided with a rubber pad (8).

7. The dual-fan automatic switching compact installation device according to claim 1, characterized in that: The dual fan box frame (3) is equipped with an inspection door (9). The door frame of the inspection door (9) is hinged to the steel plate, the door gap is fitted with a fireproof sealing strip, and is equipped with a rotary eccentric locking handle.

8. The dual-fan automatic switching compact installation device according to claim 1, characterized in that: The outer wall of the air duct switching device (2) is provided with a lifting ring (10) for easy installation and relocation.

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