Smoke removal device for blasting excavation of underground powerhouse

Abstract

The utility model discloses a smoke removal device for blasting excavation of an underground powerhouse, which belongs to the technical field of underground powerhouse construction and comprises a smoke removal pipeline arranged at the top of an underground powerhouse frame, a smoke removal top fan arranged in the smoke removal pipeline, and a smoke removal component arranged on the inner wall of the underground powerhouse frame. The free end of the smoke removal assembly is provided with a smoke removal negative-pressure cover shell, a negative-pressure smoke removal fan is arranged in the smoke removal negative-pressure cover shell, and the tail end of the top of the smoke removal negative-pressure cover shell is connected with a smoke removal pipeline through a smoke removal hose. The smoke removal assembly comprises a smoke removal swing arm horizontally and rotatably installed on the inner wall of the underground powerhouse frame, an extension swing arm telescopically and movably connected to the free end of the smoke removal swing arm and a servo motor arranged on the inner wall of the underground powerhouse frame and driving the smoke removal swing arm to swing. The smoke removal negative pressure housing is fixed to the end, away from the smoke removal swing arm, of the extension swing arm. The smoke removal device can be adjusted to any angle and position according to needs, and the smoke removal efficiency and the coverage range are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to underground powerhouse construction technical field especially underground powerhouse blasting excavation is with smoke removal device. BACKGROUND

[0002] With the continuous advancement of infrastructure construction in China, underground projects such as hydropower stations, tunnels, mines, civil air defense projects and other projects are increasing. In the process of blasting excavation construction of these underground powerhouses or caverns, a large amount of dust and harmful gas is often produced, especially in a closed space, smoke dust is difficult to diffuse naturally, which seriously threatens the health of operating personnel and may affect the subsequent construction progress and safety. Therefore, a special smoke removal device capable of efficiently and quickly removing smoke dust after blasting is urgently needed.

[0003] At present, the smoke removal equipment used in most underground projects is a fixed fan or a simple exhaust pipe system, which is fixedly installed and cannot be moved, and is usually arranged at the top of the powerhouse or near the ventilation opening. This type of equipment lacks mobility and cannot adjust the smoke removal area according to the specific position of each blasting. Due to the inability to accurately cover the blasting area, the smoke removal efficiency is low, the smoke dust stays for a long time, and the health of the operating personnel and the subsequent construction progress are affected. SUMMARY

[0004] The utility model aims at providing a kind of underground powerhouse blasting excavation is with smoke removal device to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of underground powerhouse blasting excavation is with smoke removal device, including underground powerhouse framework, the top of underground powerhouse framework has a smoke removal pipeline, there is a smoke removal top fan in smoke removal pipeline, the inner wall of underground powerhouse framework below smoke removal top fan and is provided with smoke removal assembly, the free end of smoke removal assembly is provided with smoke removal negative pressure shell, negative pressure smoke removal fan is provided in smoke removal negative pressure shell, the tail end of the top of smoke removal negative pressure shell is connected with smoke removal pipeline by smoke removal hose, the smoke removal assembly includes smoke removal swing arm that is horizontally rotatably installed in the inner wall of underground powerhouse framework, extension swing arm that is telescopically connected to the free end of smoke removal swing arm and servo motor that is arranged in the inner wall of underground powerhouse framework and drives the swing of smoke removal swing arm, the smoke removal negative pressure shell is fixed to the end of extension swing arm away from smoke removal swing arm, the output shaft of servo motor is fixedly connected with the tail end of smoke removal swing arm.

[0006] Preferably, the end of the smoke removal swing arm away from the extension swing arm and located in the inner wall of the underground powerhouse framework is fixedly installed with a first I-shaped steel plate, first ear plates are symmetrically welded on the inner wall of the first I-shaped steel plate, and the tail end of the smoke removal swing arm is hingedly connected between the two first ear plates through a pin shaft.

[0007] Preferably, a support plate is welded to the inner wall of the first I-shaped steel plate below the first ear plate, and the servo motor is fixedly installed on the top surface of the support plate, so that the output shaft of the servo motor penetrates the first ear plate and is connected with the tail end of the smoke removal swing arm.

[0008] Preferably, a second I-shaped steel plate is arranged on the outer wall of the underground powerhouse frame and aligned with the position of the first I-shaped steel plate, and the first I-shaped steel plate and the second I-shaped steel plate are connected together by locking bolts.

[0009] Preferably, a second ear plate is symmetrically welded to the lower part of the inner wall of the first I-shaped steel plate below the servo motor, and an inclined support arm is hinged between the two second ear plates through a pin shaft, and one end of the inclined support arm away from the second ear plate is welded to the bottom surface of the smoke removal swing arm.

[0010] Preferably, a telescopic inner rod is welded to the end of the extension swing arm away from the smoke removal negative pressure shell, the telescopic inner rod is inserted into the inner cavity of the smoke removal swing arm, and an electric telescopic rod is installed in the inner cavity of the smoke removal swing arm.

[0011] Preferably, the telescopic end of the electric telescopic rod is fixedly connected with the end of the telescopic inner rod away from the extension swing arm, so that the electric telescopic rod can move telescopically in the smoke removal swing arm, and the electric telescopic rod pushes and pulls the telescopic inner rod to move in the inner cavity of the smoke removal swing arm.

[0012] Preferably, a rainproof cover is arranged on the top of the underground powerhouse frame and covers the top end of the smoke removal pipeline, and a smoke removal window is arranged on the periphery of the end of the smoke removal pipeline extending to the outside of the underground powerhouse frame.

[0013] Preferably, a smoke removal filter screen is fixedly installed in the smoke removal pipeline above the smoke removal top fan, and a smoke removal collector cover is fixedly arranged in the smoke removal pipeline below the smoke removal top fan.

[0014] Preferably, the end of the smoke removal hose away from the smoke removal negative pressure shell is sealed and penetrates and is fixed in the smoke removal collector cover.

[0015] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0016] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0017] The extension swing arm is inserted into the smoke removing swing arm through the telescopic inner rod, and is pushed to realize telescopic adjustment by the electric telescopic rod, so that the total length can be freely stretched or shortened according to the size of the workshop, compared with the prior art, the needs of narrow space or super-large span workshop are met, the effective smoke removing range of a single set of device is expanded, and the number of equipment distribution points is reduced.

[0018] The inhaled smoke is transported to the smoke removing wind collector through the smoke removing hose, and then enters the smoke removing pipeline upwards, and the smoke removing top fan further strengthens the suction force, so that the smoke is discharged out of the workshop, and compared with the prior art, the smoke conveying efficiency is greatly improved by the double-stage negative pressure system. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed in the following specific embodiment or prior art description will be briefly introduced, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the smoke removing assembly of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the extension swing arm in the extended state of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the disassembled state of the negative pressure smoke removing fan of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the installation of the second I-shaped steel plate of the utility model;

[0025] Figure 6 It is a structural schematic diagram of the utility model Figure 1 It is an enlarged structural schematic diagram of A in the utility model

[0026] Explanation of reference numerals:

[0027] In the drawing: 1, underground workshop frame; 2, first I-shaped steel plate; 3, second I-shaped steel plate; 4, smoke removing swing arm; 5, smoke removing assembly; 6, extension swing arm; 7, smoke removing negative pressure cover; 8, smoke removing hose; 9, inclined support arm; 10, first ear plate; 11, servo motor; 12, second ear plate; 13, telescopic inner rod; 14, locking bolt; 15, electric telescopic rod; 16, negative pressure smoke removing fan; 17, rainproof cover; 18, smoke removing window; 19, smoke removing filter screen; 20, smoke removing top fan; 21, smoke removing pipeline; 22, smoke removing wind collector. DETAILED DESCRIPTION

[0028] In the following description, numerous specific details are set forth to provide a more thorough understanding of the present application. However, it will be apparent to one of skill in the art upon

[0029] Unless specifically defined otherwise, the terms "upper," "lower," "left," "right," "front," "rear," "inner," "outer," and the like as used herein refer to the

[0030] The embodiment provides a smoke removing device for underground powerhouse blasting excavation as shown in the figure. Figures 1 to 6 The embodiment provides a smoke removing device for underground powerhouse blasting excavation as shown in the figure. The smoke removing device comprises an underground powerhouse frame 1, a smoke removing pipeline 21 is arranged on the top of the underground powerhouse frame 1, a smoke removing top fan 20 is arranged in the smoke removing pipeline 21, a smoke removing assembly 5 is arranged below the smoke removing top fan 20 and on the inner wall of the underground powerhouse frame 1, a smoke removing negative pressure cover 7 is arranged at the free end of the smoke removing assembly 5, a negative pressure smoke removing fan 16 is arranged in the smoke removing negative pressure cover 7, the top tail end of the smoke removing negative pressure cover 7 is connected with the smoke removing pipeline 21 through a smoke removing hose 8, the smoke removing assembly 5 comprises a smoke removing swing arm 4 which is horizontally rotatably arranged on the inner wall of the underground powerhouse frame 1, an extension swing arm 6 which is telescopically connected with the free end of the smoke removing swing arm 4, and a servo motor 11 which is arranged on the inner wall of the underground powerhouse frame 1 and drives the smoke removing swing arm 4 to swing, the smoke removing negative pressure cover 7 is fixed to one end of the extension swing arm 6 which is away from the smoke removing swing arm 4, and the output shaft of the servo motor 11 is fixedly connected with the tail end of the smoke removing swing arm 4. When smoke needs to be removed, the servo motor 11 drives the smoke removing swing arm 4 and the extension swing arm 6 to swing in an arc shape with the rotating mounting point as the center, so that the extension swing arm 6 drives the smoke removing negative pressure cover 7 to move to a position where smoke needs to be removed, the negative pressure smoke removing fan 16 in the smoke removing negative pressure cover 7 performs negative pressure smoke suction, the smoke is transported into the smoke removing pipeline 21 through the smoke removing hose 8, the smoke is finally discharged through the smoke removing top fan 20 in the smoke removing pipeline 21 and discharged outside the underground powerhouse frame 1. Meanwhile, the servo motor 11 drives the smoke removing swing arm 4 and the extension swing arm 6 to increase the area for smoke suction and improve the smoke removing effect and efficiency. In addition, the smoke removing swing arm 4 and the extension swing arm 6 are telescopically connected, so that the distance between the two can be adjusted to meet the smoke removing needs of powerhouses of different sizes.

[0031] In this embodiment, the first I-shaped steel plate 2 is fixedly installed on the inner wall of the underground powerhouse frame 1 away from the one end of the smoke removal swing arm 4, and the first ear plate 10 is symmetrically welded on the upper part of the inner wall of the first I-shaped steel plate 2. The tail end of the smoke removal swing arm 4 is hingedly connected between the two first ear plates 10 through a pin shaft.

[0032] In this embodiment, the support plate is welded on the inner wall of the first I-shaped steel plate 2 below the first ear plate 10, and the servo motor 11 is fixedly installed on the top surface of the support plate, so that the output shaft of the servo motor 11 penetrates the first ear plate 10 and is connected with the tail end of the smoke removal swing arm 4.

[0033] In this embodiment, the second I-shaped steel plate 3 is arranged on the outer wall of the underground powerhouse frame 1 and aligned with the first I-shaped steel plate 2, and the first I-shaped steel plate 2 and the second I-shaped steel plate 3 are fastened and clamped together by the locking bolt 14, so that the locking bolt 14 penetrates the underground powerhouse frame 1 to lock the first I-shaped steel plate 2 and the second I-shaped steel plate 3 together, thereby increasing the installation stability of the first I-shaped steel plate 2. By installing the second I-shaped steel plate 3 on the outer side of the underground powerhouse frame 1 and clamping the underground powerhouse frame 1 through the locking bolt 14 with the first I-shaped steel plate 2, a "clamping plate type" structure is formed, which greatly enhances the bending and torsion resistance of the first I-shaped steel plate 2, significantly improves its carrying capacity and structural stability, avoids structural fatigue damage caused by local stress concentration, effectively prevents the first I-shaped steel plate 2 from slipping or deviating due to vibration, load change and other reasons in long-term use, and improves the safety and reliability of the overall operation of the equipment.

[0034] In this embodiment, the second ear plate 12 is symmetrically welded on the lower part of the inner wall of the first I-shaped steel plate 2 below the servo motor 11, and the inclined support arm 9 is hingedly connected between the two second ear plates 12 through a pin shaft, and the end of the inclined support arm 9 away from the second ear plate 12 is welded with the bottom surface of the smoke removal swing arm 4; so that the inclined support arm 9 can not only support the smoke removal swing arm 4, but also can follow the arc swing of the smoke removal swing arm 4.

[0035] In this embodiment, the telescopic inner rod 13 is welded on the end of the extension swing arm 6 away from the smoke removal negative pressure shell 7, the telescopic inner rod 13 is inserted into the inner cavity of the smoke removal swing arm 4, and the electric telescopic rod 15 is installed in the inner cavity of the smoke removal swing arm 4.

[0036] In this embodiment, the telescopic end of the electric telescopic rod 15 is fixedly connected with the end of the telescopic inner rod 13 away from the extension swing arm 6, so that the electric telescopic rod 15 can move in and out of the smoke removal swing arm 4, and the electric telescopic rod 15 pushes and pulls the telescopic inner rod 13 to move in the inner cavity of the smoke removal swing arm 4; so as to adjust the distance between the smoke removal swing arm 4 and the extension swing arm 6.

[0037] In this embodiment, the upper part of the underground powerhouse frame 1 is provided with a rain cover 17, and the upper end of the smoke removal pipe 21 is provided with a smoke removal window 18. The smoke can flow into the smoke removal pipe 21 and then be discharged from the smoke removal window 18.

[0038] In this embodiment, the smoke removal filter screen 19 is fixedly installed in the smoke removal pipe 21 above the smoke removal top fan 20, and the smoke removal wind collecting cover 22 is fixed below the smoke removal top fan 20.

[0039] In this embodiment, the end of the smoke removal hose 8 away from the smoke removal negative pressure cover 7 is sealed and fixed in the smoke removal wind collecting cover 22. The smoke is transported to the smoke removal wind collecting cover 22 through the negative pressure of the negative pressure smoke removal fan 16, and the smoke removal efficiency and speed are improved under the further negative pressure suction of the smoke removal top fan 20. The smoke is filtered through the smoke removal filter screen 19 and then discharged from the smoke removal window 18.

[0040] Working principle

[0041] After the blasting operation is completed, the staff confirms the safety of the site and prepares to start the smoke removal device. The servo motor 11 and the electric telescopic rod 15 are started, and the standby state is entered. The servo motor 11 drives the smoke removal swing arm 4 to rotate, and the output shaft of the servo motor 11 drives the smoke removal swing arm 4 to swing in the horizontal direction with the first ear plate 10 as the fulcrum. The extension swing arm 6 swings with the smoke removal swing arm 4, thereby driving the smoke removal negative pressure cover 7 to move above or near the required smoke removal area. The electric telescopic rod 15 adjusts the length of the extension swing arm 6. If the current powerhouse space is large or small, the electric telescopic rod 15 can push the telescopic inner rod 13, thereby lengthening or shortening the total length of the extension swing arm 6, and realizing the space adaptability of the smoke removal operation for different sizes of underground powerhouses.

[0042] The negative pressure smoke removal fan 16 is started, and the negative pressure smoke removal fan 16 rotates at high speed inside the smoke removal negative pressure cover 7, forming a local negative pressure area. The smoke dust is sucked into the cover and transported to the smoke removal wind collecting cover 22 through the smoke removal hose 8. The sucked smoke is transported to the smoke removal wind collecting cover 22 through the smoke removal hose 8, and then flows into the smoke removal pipe 21. The smoke removal top fan 20 in the smoke removal pipe 21 further enhances the suction, so that the smoke quickly rises.

[0043] The smoke flows through the smoke removal filter screen 19, filters out large particles of dust and harmful substances, prevents direct emission from polluting the environment, and is discharged from the smoke removal window 18 under the action of the smoke removal top fan 20. The rain cover 17 protects the smoke removal window 18 from rainwater, ensuring long-term stable operation of the smoke exhaust system.

[0044] After the smoke removal task is completed, the power supply of all the fans and motors is turned off, and the servo motor 11 controls the smoke removal swing arm 4 to return to the initial position.

[0045] It is to be noted that, in the present document, relational terms such as one and another and at least one and containing are used solely to distinguish one entity or action from another entity or action, without necessarily requiring or implying that there is any such relationship between these entities or actions, the terms "comprising", "having" or any other open terms are used herein only to refer to the presence of stated features, integers, steps and / or components, but not to the exclusion of the presence or addition of one or more other features, integers, steps, components or groups thereof, the term "and / or" includes combinations thereof.

[0046] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A smoke removal device for blasting excavation of an underground powerhouse, comprising an underground powerhouse frame (1), characterized in that: The top of the underground plant frame (1) has a smoke removal duct (21), and a smoke removal top fan (20) is installed in the smoke removal duct (21). A smoke removal assembly (5) is installed below the smoke removal top fan (20) and on the inner wall of the underground plant frame (1). A smoke removal negative pressure hood (7) is installed at the free end of the smoke removal assembly (5). A negative pressure smoke removal fan (16) is installed in the smoke removal negative pressure hood (7). The top end of the smoke removal negative pressure hood (7) is connected to the smoke removal duct through a smoke removal hose (8). (21) Connection, the smoke removal assembly (5) includes a smoke removal swing arm (4) that is horizontally rotatably installed on the inner wall of the underground factory frame (1), an extension swing arm (6) that is telescopically connected to the free end of the smoke removal swing arm (4), and a servo motor (11) that is set on the inner wall of the underground factory frame (1) and drives the smoke removal swing arm (4) to swing. The smoke removal negative pressure cover (7) is fixed to the end of the extension swing arm (6) away from the smoke removal swing arm (4). The output shaft of the servo motor (11) is fixedly connected to the tail end of the smoke removal swing arm (4).

2. The smoke removal device for blasting excavation of an underground powerhouse according to claim 1, characterized in that: The smoke removal swing arm (4) is fixedly installed on the inner wall of the underground plant frame (1) at the end away from the extended swing arm (6). The upper part of the inner wall of the first I-shaped steel plate (2) is symmetrically welded with first ear plates (10). The tail end of the smoke removal swing arm (4) is hinged between the two first ear plates (10) by a pin.

3. The smoke removal device for blasting excavation of an underground powerhouse according to claim 2, characterized in that: A support plate is welded below the first ear plate (10) and on the inner wall of the first I-shaped steel plate (2). The servo motor (11) is fixedly installed on the top surface of the support plate, so that the output shaft of the servo motor (11) passes through the first ear plate (10) and is connected to the tail end of the smoke removal swing arm (4).

4. The smoke removal device for blasting excavation of an underground powerhouse according to claim 3, characterized in that: The outer wall of the underground factory frame (1) is provided with a second I-beam (3) aligned with the first I-beam (2), and the first I-beam (2) and the second I-beam (3) are fastened and connected together by locking bolts (14).

5. A smoke removal device for blasting excavation of an underground powerhouse according to claim 4, characterized in that: The servo motor (11) is located below the inner wall of the first I-shaped steel plate (2) and is symmetrically welded with a second ear plate (12). The two second ear plates (12) are hinged together by a pin and an inclined support arm (9). The end of the inclined support arm (9) away from the second ear plate (12) is welded to the bottom surface of the smoke removal swing arm (4).

6. A smoke removal device for blasting excavation of an underground powerhouse according to claim 5, characterized in that: The extended swing arm (6) is welded with a telescopic inner rod (13) at the end away from the smoke removal negative pressure hood (7). The telescopic inner rod (13) is inserted into the inner cavity of the smoke removal swing arm (4), and an electric telescopic rod (15) is installed in the inner cavity of the smoke removal swing arm (4).

7. A smoke removal device for blasting excavation of an underground powerhouse according to claim 6, characterized in that: The telescopic end of the electric telescopic rod (15) is fixedly connected to the end of the telescopic inner rod (13) away from the extension arm (6), so that the electric telescopic rod (15) can telescopically move in the smoke removal arm (4), and the electric telescopic rod (15) pushes and pulls the telescopic inner rod (13) to move in the inner cavity of the smoke removal arm (4).

8. A smoke removal device for blasting excavation of an underground powerhouse according to claim 1, characterized in that: A rain cover (17) is fixedly installed above the underground factory frame (1) and at the top of the smoke removal duct (21). A smoke removal window (18) is provided on the periphery of one end of the smoke removal duct (21) extending to the outer side above the underground factory frame (1).

9. A smoke removal device for blasting excavation of an underground powerhouse according to claim 8, characterized in that: A smoke removal filter screen (19) is fixedly installed above the smoke removal top fan (20) and in the smoke removal duct (21), and a smoke removal air collection hood (22) is fixed below the smoke removal top fan (20) and in the smoke removal duct (21).

10. A smoke removal device for blasting excavation of an underground powerhouse according to claim 9, characterized in that: The end of the smoke removal hose (8) away from the smoke removal negative pressure hood (7) is sealed and fixed in the smoke removal air collection hood (22).

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