Blast-proof impact-resistant downhole air door

Abstract

The application relates to the technical field of color metal mine underground ventilation equipment, in particular to an underground air door capable of preventing blasting impact, so as to solve the problem that the underground air door is easily damaged by blasting shock waves, wherein the air door comprises a horizontal plate, a door body is arranged below the horizontal plate, a control assembly is arranged in front of the horizontal plate, and a fan body assembly is arranged in the door body. The application has the following advantages: the one-way opening design of the one-way fan blade can quickly remove the blasting shock wave, the main body of the air door is prevented from being damaged by strong impact, normal ventilation is not affected, the one-way fan blade is closed during normal ventilation, the fan blade cannot be opened by the positive wind pressure, the air flow is ensured to circulate in the preset direction, the function of the underground ventilation system is not disturbed, the service life is prolonged, the damage of the air door caused by blasting impact is reduced, the maintenance and replacement frequency is greatly reduced, the use cost is reduced, the structure is simple and practical, the function can be realized by adding the one-way fan blade on the basis of the existing air door, and the air door is easy to manufacture and popularize and apply.

Description

Technical Field

[0001] This utility model relates to the technical field of underground ventilation equipment in non-ferrous metal mines, specifically an underground ventilation door resistant to blasting impact. Background Technology

[0002] In underground mining of non-ferrous metal mines such as tungsten, blasting is a commonly used mining method. To regulate the direction of airflow underground, multiple ventilation doors need to be installed in the roadways.

[0003] Currently, the blasting shock waves generated during blasting operations exert a tremendous impact on ventilation doors, causing frequent damage. This not only increases equipment maintenance and replacement costs but may also affect the stability of the underground ventilation system due to ventilation door failure, posing a safety hazard. Therefore, there is an urgent need for a ventilation door structure that can withstand blasting shock waves and extend its service life.

[0004] Based on this, this utility model designs an underground ventilation door that is resistant to blasting impacts to solve the problem. Utility Model Content

[0005] The purpose of this invention is to provide an underground ventilation door that is resistant to blasting impact, so as to solve the problem in the background art that underground ventilation doors are easily damaged by blasting shock waves.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an underground ventilation door resistant to blasting impact, comprising a horizontal plate, a door body located below the horizontal plate, a control component located in front of the horizontal plate, and a fan body component located inside the door body.

[0007] Preferably, two columns are fixedly installed on the bottom surface of the door body, and a door is hinged to the front and back of the two columns by a hinge. Two sets of installation openings are provided on the front of the columns.

[0008] Preferably, the fan assembly includes two sets of crossbars rotatably mounted on the inner walls of two sets of mounting openings, and fan blades are rotatably mounted on the outer surface of each crossbar, with the two sets of fan blades being adjacent to each other.

[0009] Preferably, the control component includes a first mounting base installed on the front of the horizontal plate, a hydraulic cylinder or a pneumatic cylinder rotatably mounted on the inner wall of the first mounting base, a connecting rod fixedly mounted on the telescopic end of the hydraulic cylinder, a control rod fixedly mounted on the bottom end of the connecting rod, a first connecting seat and a second connecting seat fixedly mounted on the front of the two fan doors respectively, and the top ends of the first connecting seat and the top ends of the second connecting seat rotatably mounted to the two ends of the two control rods respectively.

[0010] Preferably, each of the fan doors is provided with a handle at the front and the back, and the two sets of handles are fixedly installed on the front and back sides of the two fan doors respectively.

[0011] Preferably, baffles are fixedly installed on both the front and back of the horizontal plate, and the two baffles are respectively in contact with the two door panels on their sides that are close to each other.

[0012] Compared with the prior art, the beneficial effects of this utility model are: significant anti-explosion impact effect: through the one-way opening design of the one-way fan blade, the blast shock wave can be quickly dissipated, avoiding damage to the damper body due to strong impact;

[0013] It does not affect normal ventilation: During normal ventilation, the one-way fan blades are closed, and the forward wind pressure cannot blow the fan blades open, ensuring that the airflow flows in the preset direction and does not interfere with the function of the underground ventilation system.

[0014] Extend service life: Reduce damage to dampers caused by blasting impact, significantly reduce maintenance and replacement frequency, and lower operating costs;

[0015] Simple and practical structure: The function can be achieved by adding a one-way fan blade to the existing damper, which is easy to manufacture and promote application. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a detailed schematic diagram of the flipping mechanism of this utility model;

[0019] Figure 3 This is a schematic cross-sectional view of the internal structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the baffle groove and baffle structure of this utility model.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Horizontal plate; 2. Door body; 201. Upright; 202. Door leaf; 203. Mounting opening; 204. Handle; 3. Door leaf assembly; 301. Crossbar; 302. Door blade; 4. Control assembly; 401. First mounting base; 402. Hydraulic cylinder; 403. Connecting rod; 404. Control rod; 405. First connecting base; 406. Second connecting base. Detailed Implementation

[0023] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1 to 4 This utility model provides a technical solution: an underground ventilation door for protection against blasting impact, including a horizontal plate 1, a door body 2 below the horizontal plate 1, a control component 4 in front of the horizontal plate 1, and a fan body component 3 inside the door body 2.

[0025] Please see Figure 3 Two uprights 201 are fixedly installed on the bottom surface of the door body 2. The front and back of the two uprights 201 are hinged with a door 202. The front of the uprights 201 has two sets of mounting holes 203. The fan blade 302 can be installed through the mounting holes 203, and the door 202 can be opened.

[0026] Please see Figure 4 The fan assembly 3 includes two sets of crossbars 301 rotatably mounted on the inner walls of two sets of mounting ports 203. Each crossbar 301 has a fan blade 302 rotatably mounted on its outer surface. The two sets of fan blades 302 are adjacent to each other. Through the cooperation of the crossbars 301 and the fan blades 302, the fan blades 302 can rotate and the fan blades 302 can release pressure.

[0027] Please see Figure 1 The control component 4 includes a first mounting base 401 installed on the front of the horizontal plate 1. A hydraulic cylinder 402 is rotatably mounted on the inner wall of the first mounting base 401. A connecting rod 403 is fixedly mounted on the telescopic end of the hydraulic cylinder 402. A control rod 404 is fixedly mounted on the bottom end of the connecting rod 403. A first connecting seat 405 and a second connecting seat 406 are fixedly mounted on the front of the two fan doors 202, respectively. The top ends of the first connecting seat 405 and the top ends of the second connecting seat 406 are rotatably mounted to the two ends of the two control rods 404, respectively. By providing the hydraulic cylinder 402, the piston rod of the hydraulic cylinder 402 can push the connecting rod 403 to rotate, so that the connecting rod 403 can push the control rod 404 to move, so that the control rod 404 can push the first connecting seat 405 and the second connecting seat 406, so that the first connecting seat 405 and the second connecting seat 406 can push the two fan doors 202 to open.

[0028] Please see Figure 3Each door 202 has a handle 204 at the front and the back. The two sets of handles 204 are fixedly installed on the front and back of the two doors 202 respectively. The handles 204 make it easy to push the doors 202 to open them.

[0029] Please see Figure 3 Both the front and back sides of the horizontal plate 1 are fixedly installed with baffles 5. The two baffles 5 are close to each other on one side and respectively contact the two fan doors 202. The baffles 5 can block the fan doors 202 and prevent the fan doors 202 from opening in the reverse direction.

[0030] The implementation principle of an underground ventilation door for blasting impact protection according to an embodiment of this application is as follows: During use, the device is installed inside the roadway with the fan blades 302 opening towards the outside of the roadway. The hydraulic cylinder 402 of the device is connected to the ventilation door control system to control the device. During normal passage, activating the hydraulic cylinder 402 causes it to push two connecting rods 403 to move, which in turn pushes a control rod 404 to move. This causes the control rod 404 to rotate the first connecting seat 405 and the second connecting seat 406, allowing the two fan doors 202 to open in different directions. When airflow blows from outside the roadway into the normal ventilation direction, the fan blades 302 are pressed against the surface of the fan door 202 by wind pressure, remaining in a closed state to ensure airflow in a preset direction. When a blasting shock wave impacts from inside the roadway to the outside, the fan blades 302 are rotated around the crossbar 301 by the reverse impact force, forming a pressure relief channel to dissipate the shock wave energy and prevent damage to the main body of the ventilation door.

[0031] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0032] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A blast-resistant underground ventilation door, comprising a horizontal plate (1), characterized in that: A door (2) is provided below the horizontal plate (1), a control component (4) is provided in front of the horizontal plate (1), and a fan component (3) is provided inside the door (2). Two columns (201) are fixedly installed on the bottom surface of the door (2). The front and back of the two columns (201) are hinged with a door (202). Two sets of installation openings (203) are opened on the front of the column (201). The fan assembly (3) includes two sets of crossbars (301) rotatably mounted on the inner walls of two sets of mounting ports (203), and each set of crossbars (301) has a fan blade (302) rotatably mounted on its outer surface, with the two sets of fan blades (302) adjacent to each other; The fan blade (302) opens towards the outside of the tunnel. When the airflow blows from the outside of the tunnel into the normal ventilation direction, the fan blade (302) is pressed against the surface of the fan door (202) by the wind pressure and is in a closed state. When the blast shock wave impacts from the inside of the tunnel to the outside, the fan blade (302) is rotated around the crossbar (301) by the reverse impact force and opens to form a pressure relief channel.

2. The underground ventilation door for protection against blasting impact as described in claim 1, characterized in that: The control component (4) includes a first mounting base (401) installed on the front of the horizontal plate (1). A hydraulic cylinder (402) is rotatably mounted on the inner wall of the first mounting base (401). A connecting rod (403) is fixedly mounted on the telescopic end of the hydraulic cylinder (402). A control rod (404) is fixedly mounted on the bottom end of the connecting rod (403). A first connecting seat (405) and a second connecting seat (406) are fixedly mounted on the front of the two fan doors (202). The top ends of the first connecting seat (405) and the top ends of the second connecting seat (406) are rotatably mounted to the two ends of the two control rods (404).

3. The underground ventilation door for protection against blasting impact as described in claim 1, characterized in that: Each of the fan doors (202) is provided with a handle (204) at the front and the back. The two sets of handles (204) are fixedly installed on the front and back of the two fan doors (202) respectively, with one side of each set of handles (204) close to the other.

4. The blast-resistant underground ventilation door according to claim 1, characterized in that: Both the front and back sides of the horizontal plate (1) are fixedly installed with baffles (5), and the two baffles (5) are in contact with the two doors (202) respectively on their sides that are close to each other.

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