Ventilation regulating mechanism

Abstract

The utility model relates to the technical field of coal mine safety equipment, and specifically discloses a ventilation adjusting mechanism. Including the air door frame, the air door frame is installed in the mine gallery, and two air doors are symmetrically installed on the air door frame, the air door is rotatably installed in the air door frame, and is matched with the sealing strip embedded in the inner side of the air door frame, and a wind pressure balance assembly is further arranged in the air door. The setting of the inclined sealing strip effectively compensates the slight deformation of the air door frame, significantly reduces the air leakage rate, and improves the efficiency of the ventilation system. The setting of the wind pressure balance assembly realizes effective adjustment of the air pressure on both sides of the air door, reduces the opening resistance, avoids the situation that workers forcibly open the air door with crowbars and other tools, enhances the stability of air pressure balance, and improves the operation safety. The existing air door solves the problems of air door sealing and opening difficulty.

Description

Technical Field

[0001] This utility model belongs to the technical field of mine ventilation equipment, specifically, it relates to a ventilation regulation mechanism. Background Technology

[0002] In mine safety production, the ventilation system is a crucial facility for ensuring air circulation and a safe working environment within the mine. Among these, air dampers, as key devices for regulating the direction and volume of airflow within the mine, directly affect the efficiency and safety of the ventilation system.

[0003] However, existing coal mine ventilation doors still have certain limitations in practical applications, especially in terms of sealing structure and opening mechanism. Traditional coal mine ventilation doors generally use flat rubber sealing strips as sealing elements. Due to the complex and variable underground environment, the surrounding rock pressure may cause slight deformation of the ventilation door frame, and the flat rubber sealing strip is difficult to adapt to this change, easily resulting in uneven sealing surfaces, which leads to increased air leakage and significantly reduces the efficiency of the ventilation system. In addition, flat rubber sealing strips are prone to wear during long-term use, requiring frequent replacement, resulting in high maintenance costs, and each replacement requires shutdown, which has a certain impact on normal production.

[0004] Regarding the opening mechanism, as a large-volume piece of equipment, the airlock experiences significantly increased opening resistance when the pressure difference between its two sides exceeds 500 Pa. Workers often need to use tools such as pry bars to force it open, which not only increases labor intensity but also poses significant safety hazards. Although some existing balanced airlock structures can partially alleviate the opening resistance problem, they usually rely on additional power sources (such as pneumatic or electric devices), leading to increased equipment costs and a higher failure rate. More importantly, such structures do not meet the requirements of coal mine safety regulations for passive safety equipment, potentially posing risks in hazardous environments such as those involving gas.

[0005] The aforementioned problems have, to some extent, limited the performance and reliability of coal mine ventilation doors, affected the overall efficiency of the mine ventilation system, and increased safety hazards and maintenance costs. Therefore, there is an urgent need for a coal mine ventilation door regulating mechanism that is simple and reliable in structure, requires no external power, effectively solves the sealing problem, and reduces opening resistance, in order to meet the actual needs of mine ventilation.

[0006] Based on this, the present invention proposes a ventilation regulation mechanism to solve the problems existing in the prior art. Utility Model Content

[0007] In view of this, the main objective of this utility model is to provide a ventilation regulating mechanism to solve the problems of poor sealing and difficulty in opening existing dampers.

[0008] To achieve the above objectives, the technical solution of this utility model is implemented as follows: A ventilation regulating mechanism includes a door frame, which is installed in a mine roadway, and two doors are symmetrically installed on the door frame. The doors are rotatably installed in the door frame and match the sealing strip embedded in the inner side of the door frame. A pressure balancing component is also provided inside the door.

[0009] In a preferred embodiment, the sealing strip is a rubber component that is fixedly embedded in a groove inside the damper frame and matches the damper.

[0010] In a preferred embodiment, the side of the sealing strip adjacent to the rotating damper is an inclined surface.

[0011] In a preferred embodiment, the wind pressure balancing assembly includes a louver frame, louvers, and a drive assembly; the louver frame is detachably installed inside the damper, and a plurality of louver mounting slots are provided on the louver frame; the louvers are rotatably installed on the louver frame via shafts at both ends, and are matched with the louver mounting slots; the drive assembly is installed on the louver frame and is matched with a gear provided on the shafts.

[0012] In a preferred embodiment, the drive assembly includes a toothed belt and an adjustment handle; the toothed belt is mounted on the louver frame and meshes with a gear; the adjustment handle is rotatably mounted on both sides of the damper, and a first bevel gear is provided at the drive end of the adjustment handle, the first bevel gear meshing with a second bevel gear provided at either end of the connecting shaft.

[0013] In a preferred embodiment, a plurality of first guide grooves are provided on one side panel of the damper, and a guide plate is detachably installed on the damper panel on the side adjacent to the location of the first guide grooves.

[0014] In a preferred embodiment, the guide plate is provided with a plurality of second guide grooves that match the first guide groove.

[0015] In a preferred embodiment, the damper frame is a rectangular structure, and several positioning square steels are provided on the outside of the damper frame.

[0016] In a preferred embodiment, a baffle is further provided on the inner side of the damper frame, the baffle being located behind the closed position of the damper and matching the damper.

[0017] In a preferred embodiment, the damper is further provided with an observation window, which is a high-strength transparent material component.

[0018] Compared with the prior art, the present invention provides a ventilation regulating mechanism, which has the following beneficial effects: 1. The beveled sealing strip effectively compensates for minor deformations of the damper frame, significantly reducing air leakage and improving the efficiency of the ventilation system.

[0019] 2. The air pressure balancing component effectively regulates the air pressure on both sides of the damper, reducing opening resistance and preventing workers from forcibly opening it with tools such as pry bars. This enhances the stability of air pressure balance and improves operational safety.

[0020] 3. The introduction of the observation window provides operators with a convenient monitoring method, improving the practicality of the equipment.

[0021] 4. This ventilation regulating mechanism has a simple and reliable structure and requires no external power. It not only meets the actual needs of mine ventilation, but also significantly improves the performance and reliability of the air doors, reduces maintenance costs, and provides a strong guarantee for safe production in the mine.

[0022] This solves the problems of poor sealing and difficulty in opening existing dampers. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 from these drawings without creative effort.

[0024] Figure 1 This is an installation effect diagram of the practical ventilation control mechanism; Figure 2 This is a structural schematic diagram of the forward-looking angle of this practical ventilation adjustment mechanism; Figure 3 This is a structural schematic diagram of the damper frame for this practical application; Figure 4 This is a structural schematic diagram showing the forward viewing angle of this practical damper; Figure 5 This is a structural schematic diagram showing the rear view angle of this practical damper; Figure 6 This is an exploded view of the practical damper; Figure 7 This is a schematic diagram of the structure of this practical wind pressure balancing component; Figure 8 For practical purposes Figure 3 A magnified view of a section at point A in the middle; Figure 9 For practical purposes Figure 7 A magnified view of part B in the image.

[0025] [Explanation of Key Component Symbols] 1. Mine roadway; 2. Air door frame; 21. Baffle; 3. Air door; 31. First guide channel; 32. Door hinge; 4. Positioning square steel; 5. Air pressure balancing assembly; 51. Louver frame; 52. Louver; 53. Second bevel gear; 54. Coupling; 55. Toothed belt; 56. Gear; 57. Louver mounting groove; 58. First bevel gear; 59. Adjusting handle; 6. Observation window; 7. Guide plate; 71. Second guide channel; 8. Sealing strip. Detailed Implementation

[0026] The structure of the ventilation regulation mechanism in a coal mine will be further described in detail below with reference to the accompanying drawings and embodiments of the present invention.

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments as described in this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0031] As per the instruction manual Figures 1-9 As shown, this utility model provides a technical solution: A ventilation regulating mechanism is provided for installation in a mine roadway 1 to ventilate and control the airflow inside the mine roadway 1. The mechanism includes a door frame 2, which is fixedly installed inside the mine roadway 1. Two doors 3 are symmetrically installed on the door frame 2. Each door 3 is rotatably installed within the door frame 2 and cooperates with a sealing strip 8 embedded inside the door frame 2 to seal the interior of the mine roadway 1 when the door 3 is closed. Furthermore, a pressure balancing component 5 is installed inside each door 3 to adjust the air pressure balance on both sides of the door 3 during use, reducing the impact of pressure difference on the opening of the door 3.

[0032] In one specific implementation, such as Figure 2 , Figure 3 and Figure 8 As shown, the damper frame 2 is a rectangular structure made of metal material, and its outer side is fixedly connected to the mine roadway wall by positioning square steel 4.

[0033] Specifically, a baffle 21 is provided on the inner side of the damper frame 2. The baffle 21 is located behind the closed position of the damper 3 and is used to limit the rotation angle of the damper 3.

[0034] Specifically, an observation window 6 is also installed on the damper 3. The observation window 6 is made of high-strength transparent material, and its edge is tightly fitted to the opening of the damper 3 by a sealing strip, thereby achieving the effect of dustproof and waterproof. The observation window 6 is located near the top of the damper 3, which makes it convenient for operators to monitor the airflow status on both sides of the damper 3 in real time.

[0035] In one specific implementation, such as Figure 2 and Figure 8 As shown, the sealing strip 8 is a soft rubber component that is fixedly embedded in the groove on the inner side of the damper frame 2 and is used in conjunction with the damper 3. After the damper 3 is closed, it forms a sealing structure, thereby eliminating the gap between the damper 3 and the damper frame 2.

[0036] Specifically, the side of the sealing strip 8 adjacent to the rotating side of the damper 3 is inclined so that the damper 3 can easily squeeze the sealing strip 8 when rotating, avoiding damage to the sealing strip 8, and allowing the sealing strip 8 to fit tightly against the outer surface of the damper 3, thereby sealing the gap between the damper 3 and the damper frame 2 after closing.

[0037] In one specific implementation, such as Figure 1 , Figure 4 , Figure 5 and Figure 6 As shown, to cooperate with the air pressure balancing assembly 5, several first guide grooves 31 are provided on one side panel of the damper 3. A guide plate 7 is detachably installed on the damper 3 panel adjacent to the location of the first guide grooves 31. The guide plate 7 has several second guide grooves 71 that cooperate with the first guide grooves 31. Through the arrangement of the first guide grooves 31 and the second guide grooves 71, a guide channel is formed with the air pressure balancing assembly 5 to balance the air pressure on both sides of the damper 3. Simultaneously, the damper 3 panel and the guide plate 7 effectively protect the air pressure balancing assembly 5 installed in the middle. Furthermore, the detachable installation of the guide plate 7 facilitates the maintenance and replacement of the air pressure balancing assembly 5.

[0038] In one specific implementation, such as Figure 2 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 9 As shown, the air pressure balancing assembly 5 includes a louver frame 51, louvers 52, and a drive assembly. The louver frame 51 is detachably installed inside the damper 3, and several louver mounting slots 57 are provided on the louver frame 51. The louvers 52 are rotatably installed on the louver frame 51 via shafts 54 at both ends, and cooperate with the louver mounting slots 57 to seal them. The drive assembly is installed on the louver frame 51 and cooperates with a gear 56 on the shafts 54. During use, the drive assembly drives multiple louvers 52 to rotate synchronously, thereby controlling the opening and closing of the louver mounting slots 57 to balance the air pressure on both sides of the damper 3.

[0039] Specifically, the drive assembly includes a toothed belt 55 and an adjusting handle 59. The toothed belt 55 is mounted on the louver frame 51 and meshes with a gear 56, driving the gear 56 to rotate via the movement of the toothed belt 55. The adjusting handle 59 is rotatably mounted on both sides of the damper 3 via bearings, and a first bevel gear 58 is provided at the drive end of the adjusting handle 59. The first bevel gear 58 meshes with a second bevel gear 53 provided at the end of any of the connecting shafts 54, and is used to manually rotate the adjusting handle 59 to drive multiple louvers 52 to rotate synchronously, thereby controlling the opening and closing of the louver mounting slots 57 to balance the air pressure on both sides of the damper 3.

[0040] The usage process and operating principle of the ventilation regulating mechanism described in this utility model include: In a mine ventilation system, when the air damper is closed, the operator first checks the installation of the sealing strip 8. For example... Figure 3 and Figure 8 As shown, the sealing strip 8 is embedded in the groove inside the damper frame 2, with its inclined surface facing the direction of damper rotation. When the damper panel 3 is closed, the damper panel presses against the inclined surface of the sealing strip 8, causing it to elastically deform and fit tightly against the surface of the damper panel. Because the sealing strip 8 is made of polymer material, it has good elasticity and anti-aging properties, and can adapt to the slight deformation of the damper frame 2 caused by the surrounding rock pressure, thereby effectively compensating for the unevenness of the sealing surface. This design significantly reduces the air leakage rate and improves the efficiency of the ventilation system.

[0041] When it is necessary to open the damper 3, the operator first checks the airflow on both sides of the damper 3 through the observation window 6. Through the observation window 6, the operator can intuitively judge the air pressure difference on both sides of the damper 3, providing a basis for subsequent operations.

[0042] Subsequently, the operator rotates the adjusting handle 59. When the adjusting handle 59 rotates, the first bevel gear 58 drives the second bevel gear 53 to rotate, which in turn drives the louvers 57 to rotate synchronously through the coupling 54, ensuring that multiple louvers 57 can open simultaneously. As the louvers 57 gradually open, the airflow passage inside the damper 3 is gradually formed, and the air pressure difference on both sides of the damper 3 gradually decreases. This process achieves dynamic balance of air pressure on both sides of the damper 3, significantly reducing opening resistance and avoiding the need for workers to forcibly open it with tools such as pry bars, thus improving operational safety.

[0043] During the opening of the airflow passage, the second guide groove 71 and the first guide groove 31 on the guide plate 7 play a role in guiding the airflow along a specific path, reducing the occurrence of turbulence, and improving the stability of air pressure balance.

[0044] During actual operation, after the damper 3 is fully opened, the operator can reconfirm the stability of the airflow on both sides of the damper through the observation window 6. If an abnormal airflow is detected, the opening angle of the louvers can be finely adjusted by adjusting the handle 59 until the air pressure reaches an ideal balance. This real-time monitoring and adjustment function significantly improves the practicality of the equipment and ensures the stable operation of the mine ventilation system.

[0045] In summary, this invention solves the problem of high air leakage rate caused by poor sealing in traditional coal mine ventilation doors by using the inclined sealing strip 8. Simultaneously, the air pressure balancing component 5 achieves dynamic pressure balance on both sides of the ventilation door, significantly reducing opening resistance. The guide plate 7 and guide groove further optimize airflow regulation and reduce turbulence. The introduction of the observation window 6 provides operators with a convenient monitoring method, improving the operability and reliability of the equipment. These technical measures work together to enable this invention to operate stably in complex and changing mine environments, meeting the actual needs of mine ventilation and providing strong support for safe mine production.

[0046] All content not described in detail in this specification is prior art known to those skilled in the art, and the model parameters of each component are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are prior art, and will not be described further here.

[0047] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A ventilation regulating mechanism, characterized in that, Includes a door frame (2), which is installed in the mine roadway (1), and two doors (3) are symmetrically installed on the door frame (2). The doors (3) are rotatably installed in the door frame (2) and are matched with the sealing strip (8) embedded in the inside of the door frame (2). A pressure balancing assembly (5) is also provided in the door (3). The sealing strip (8) is a rubber component that is fixedly embedded in the groove inside the damper frame (2) and matches the damper (3); The wind pressure balancing assembly (5) includes a louver frame (51), louvers (52), and a drive assembly; the louver frame (51) is detachably installed inside the damper (3), and a plurality of louver mounting slots (57) are provided on the louver frame (51); the louver (52) is rotatably installed on the louver frame (51) through a connecting shaft (54) at both ends, and matches the louver mounting slots (57); the drive assembly is installed on the louver frame (51) and matches the gear (56) provided on the connecting shaft (54); The drive assembly includes a toothed belt (55) and an adjusting handle (59); the toothed belt (55) is mounted on the louver frame (51) and meshes with a gear (56); the adjusting handle (59) is rotatably mounted on both sides of the damper (3), and a first bevel gear (58) is provided at the drive end of the adjusting handle (59), the first bevel gear (58) meshing with a second bevel gear (53) provided at the end of any of the connecting shafts (54); A plurality of first guide grooves (31) are provided on one side panel of the damper (3), and a guide plate (7) is detachably installed on the damper (3) panel on the side adjacent to the location of the first guide grooves (31).

2. The ventilation regulating mechanism as described in claim 1, characterized in that, The sealing strip (8) has an inclined surface on the side near the rotating damper (3).

3. The ventilation regulating mechanism as described in claim 1, characterized in that, The guide plate (7) has several second guide grooves (71) that match the first guide groove (31).

4. A ventilation regulating mechanism as described in claim 1, characterized in that, The damper frame (2) is a rectangular structure, and several positioning square steels (4) are provided on the outside of the damper frame (2).

5. A ventilation regulating mechanism as described in claim 1, characterized in that, A baffle (21) is also provided on the inner side of the damper frame (2). The baffle (21) is located behind the closed position of the damper (3) and matches the damper (3).

6. A ventilation regulating mechanism as described in claim 1, characterized in that, The damper (3) is also equipped with an observation window (6), which is a high-strength transparent material component.

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