Mining air door

Abstract

The present invention discloses a mine air door, which relates to the technical field of mine fans. It includes a shell, in which a plurality of blades are rotatably arranged, and the rotating shafts of the plurality of blades are parallel to each other, and also includes a driving device and a transmission device for rotating the blades synchronously. Compared with the structure of the double-opening style or the gate style (both are rectangular) in the existing air doors, the space required for installation and opening of the air door is small. The existing air door is opened by rotating outward, or opened by pulling out, and the air door needs to occupy a large external space. Secondly, by adopting a shutter-type air door, the shape of the air door can be set to be circular so that it can be used in a circular air duct.

Description

Technical Field

[0001] The present invention relates to the technical field of mining fans, and more particularly to a mining air door. Background Art

[0002] At present, the dampers produced in my country's fan industry are basically of split-opening style or gate style (all rectangular), which require a large installation and operation space.

[0003] Therefore, how to make a damper that requires a smaller installation and operation space has become an urgent problem to be solved by those skilled in the art. Summary of the invention

[0004] The present invention aims to provide a mine air door which requires a smaller installation and operation space.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The invention provides a mine air door, comprising a shell, a plurality of blades rotatably arranged in the shell, the rotating shafts of the plurality of blades being parallel to each other, and a driving device and a transmission device for making the blades rotate synchronously.

[0007] Optionally, the transmission device is configured as a parallelogram-shaped connecting rod mechanism, wherein the connecting rod mechanism comprises a driving rod fixedly connected to a rotating shaft of the blade, and a connecting rod is hinged between two adjacent driving rods.

[0008] Optionally, the driving device is configured as an electric actuator, and an output shaft of the electric actuator is drivingly connected to a rotating shaft of one of the blades.

[0009] Optionally, the blades are arranged in an odd number, the output shaft of the electric actuator is drivingly connected to the rotating shaft of the blade located in the middle, the middle position of the driving rod fixedly connected to the blade is fixedly connected to the rotating shaft of the blade, and the connecting rods are hinged at both ends of the driving rod.

[0010] Optionally, the number of the blades is three.

[0011] Optionally, a first sealing gasket is provided at the edge of the blade.

[0012] Optionally, the blade is provided with reinforcing ribs.

[0013] Optionally, a sliding bearing is provided on the outer shell, and the blade is rotatably connected to the outer shell through the cooperation between the rotating shaft and the sliding bearing.

[0014] Optionally, a sleeve matching the rotating shaft is provided on the side wall of the shell, one end of the sleeve is fixedly connected to the side wall of the shell, and the other end is suspended and provided with a flange, the rotating shaft passes through the sleeve, the flange is fixedly connected with a sealing flange, and a sealing gasket is provided between the flanges.

[0015] Optionally, a pointer is fixedly provided on the rotating shaft of one of the blades, and a dial matching the pointer is fixedly provided at a corresponding position of the housing.

[0016] The technical solution provided by the present invention may have the following beneficial effects: compared with the existing double-open style or gate style (both are rectangular) structures of the damper, the space required for installation and damper opening is small. The existing damper is opened by rotating outward or by pulling out, and the damper needs to occupy a large external space. Secondly, the shape of the damper can be set to be circular so that it can be used on a circular air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is a perspective view of a mining air door shown in some embodiments;

[0020] Figure 2 is a schematic structural diagram of a transmission device of a mine air door shown in some embodiments;

[0021] Figure 3 is a schematic diagram of the structure of the blades of the mining air door shown in some embodiments;

[0022] Figure 4 is a schematic structural diagram of a housing of a mining air door shown in some embodiments;

[0023] Figure 5 Schematic diagram of the structure of the connecting rod mechanism of the mine air door shown in some embodiments.

[0024] In the figure: 1, housing; 2, blade; 3, electric actuator; 11, sliding bearing; 12, sleeve; 13, first flange; 14, fixing frame; 21, rotating shaft; 22, reinforcing rib; 23, connecting pipe; 24, reamed hole; 25, first sealing gasket; 41, driving rod; 42, connecting rod; 51, pointer; 52, dial. DETAILED DESCRIPTION

[0025] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are only examples of devices or methods consistent with some aspects of the present invention.

[0026] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0027] The following is an explanation of the embodiments with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the invention described in the claims. In addition, the entire contents of the configurations shown in the following embodiments are not limited to the solutions required as the invention described in the claims.

[0028] Reference Figure 1-Figure 5 The present invention provides a mining air door, including a shell 1, a plurality of blades 2 are rotatably arranged in the shell 1, the rotating shafts 21 of the plurality of blades 2 are parallel to each other, and also includes a driving device and a transmission device for making the blades 2 rotate synchronously. With such arrangement, the blades 2 are arranged in the shell 1 like shutters, and the space required for the installation and operation of the air door is smaller than that of the double-opening style or gate style (both are rectangular) in the existing air door. The existing air door needs to occupy a large external space when it is opened by rotating outward or opened by pulling out. Secondly, when a shutter-type air door is adopted, the shape of the shell 1 can be set to be circular so that it can be used in a circular air duct.

[0029] The transmission device can be configured as a belt transmission device, a gear transmission device or a connecting rod mechanism.

[0030] like Figure 2As shown, the transmission device adopts a connecting rod mechanism, which includes a driving rod 41 and a connecting rod 42. One end of the driving rod 41 is fixedly connected to the rotating shaft 21, and the other end is hinged to the connecting rod 42. Each rotating shaft 21 is fixedly connected with a driving rod 41, and a connecting rod 42 is hinged between two adjacent driving rods 41 to form a parallelogram-shaped connecting rod mechanism, so that the blades 2 rotate at the same angular velocity to complete the opening and closing of the mining air door. The connecting rod mechanism is simple in structure and low in manufacturing cost.

[0031] Specifically, the driving device can be set as an electric actuator 3, and the output shaft of the electric actuator 3 is connected to the rotating shaft 21 of one of the blades 2. The electric actuator 3 is a prior art, which can output a certain torque and can be set as a power device with any rotation angle. The electric actuator 3 can accurately control the rotation angle of the blade 2, so that the degree of opening of the damper can be controlled more accurately.

[0032] The blades 2 can be set to an odd number, and the blades 2 are symmetrically distributed, including the middle blade 2 and the blades 2 located on both sides of the middle blade 2. The output shaft of the electric actuator 3 is transmission-connected to the rotating shaft 21 of the middle blade 2, and the middle position of the driving rod 41 fixedly connected to the rotating shaft 21 of the middle blade 2 is fixedly connected to the rotating shaft 21, and hinge points are set at both ends, and connecting rods 42 are respectively hinged, and the driving rods 41 of the blades 2 on both sides are fixedly connected to the corresponding rotating shaft 21 at one end, and the other end is hinged to the connecting rod 42. Specifically, the number of blades 2 can be set to three. Figure 2 is a schematic diagram of a linkage mechanism with three blades 2, Figure 5 Schematic diagram of the connecting rod mechanism when there are multiple blades 2. In this way, the force of the electric actuator 3 can be transmitted to each driving rod 41 more evenly, so that the blades 2 can be opened more smoothly.

[0033] A first sealing gasket 25 may also be provided at the edge of the blade 2, so as to increase the airtightness of the mining damper.

[0034] The blade 2 may be provided with reinforcing ribs 22, the extension direction of which is perpendicular to the extension direction of the shaft 21, and the size of the reinforcing ribs 22 gradually decreases from the shaft 21 to both sides. Adding reinforcing ribs 22 can increase the rigidity of the blade 2, and setting them in the vertical direction can appropriately reduce the wind resistance caused by them.

[0035] The housing 1 can be provided with a sliding bearing 11 to realize the rotational connection between the blade 2 and the housing 1. Specifically, the sliding bearing 11 is fixed by a fixing frame 14 located on both sides of the housing 1, and connecting pipes 23 are provided at both ends of the blade 2. A reaming hole 24 is provided on the rotating shaft 21 and the connecting pipe 23, and a part of the rotating shaft 21 extends into the connecting pipe 23. The rotating shaft 21 and the blade 2 are fixedly connected by bolts through the reaming hole. The use of the sliding bearing 11 can withstand a large radial force and increase the service life of the bearing.

[0036] A sleeve 12 may also be provided on the side walls of both sides of the housing 1. A flange is provided at one end of the sleeve 12, and the other end is fixedly connected to the housing 1, and may be fixed to the housing 1 by welding or other means. The rotating shaft 21 passes through one end of the sleeve 12 and is fixedly connected to the blade 2 located inside the housing 1, and the other end is matched and connected to the sliding bearing 11 located outside the housing 1. The inner diameter of the sleeve 12 is slightly larger than the outer diameter of the rotating shaft 21. A sealing flange is fixedly connected to the flange end of the sleeve 12, and a sealing gasket is provided between the two, so that the wind in the air duct can be prevented from passing through the gap between the rotating shaft 21 and the sleeve 12 and flowing out from the side wall of the housing 1. At the same time, the addition of the sleeve 12 can temporarily support the rotating shaft 21 when the rotating shaft 21 is bent by a large wind force, so as to reduce the pressure on the sliding bearing 11.

[0037] The rotating shaft 21 of one of the blades 2 may also be fixedly provided with a pointer 51, which may be specifically provided on the rotating shaft 21 of the blade 2 located at the side. The housing 1 is fixedly provided with a dial 52 matching the pointer 51 at a corresponding position. In this way, the opening and closing size of the damper can be determined by observing the reading of the pointer 51.

[0038] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0039] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A mine air door, characterized in that: It comprises a housing (1), a plurality of blades (2) are rotatably arranged in the housing (1), the rotation axes (21) of the plurality of blades (2) are parallel to each other, and it also comprises a driving device and a transmission device for making the blades (2) rotate synchronously; The transmission device is configured as a parallelogram-shaped connecting rod mechanism, the connecting rod mechanism comprising a driving rod (41) fixedly connected to the rotating shaft (21) of the blade (2), and a connecting rod (42) hingedly connected between two adjacent driving rods (41); The driving device is configured as an electric actuator (3), and the output shaft of the electric actuator (3) is drivingly connected to the rotating shaft (21) of one of the blades (2); The blades (2) are arranged in an odd number, the output shaft of the electric actuator (3) is drivingly connected to the rotating shaft (21) of the blade (2) located in the middle, the middle position of the driving rod (41) fixedly connected to the blade (2) is fixedly connected to the rotating shaft (21) of the blade (2), and the connecting rods (42) are hinged at the positions of both ends of the driving rod (41); The housing (1) is provided with a sliding bearing (11), and the blade (2) is rotatably connected to the housing (1) through the cooperation between the rotating shaft (21) and the sliding bearing (11); A sleeve (12) matching the rotating shaft (21) is arranged on the side wall of the housing (1); one end of the sleeve (12) is fixedly connected to the side wall of the housing (1); the other end is suspended and provided with a flange; the rotating shaft (21) passes through the sleeve (12); the flange is fixedly connected with a sealing flange; and a sealing gasket is arranged between the flanges.

2. The mining air door according to claim 1, characterized in that: The number of blades (2) is three.

3. The mine air door according to claim 1, characterized in that: A first sealing pad (25) is provided at the edge of the blade (2).

4. The mine air door according to claim 1, characterized in that: The blade (2) is provided with a reinforcing rib (22).

5. The mine air door according to claim 1, characterized in that: A pointer (51) is fixedly arranged on the rotating shaft (21) of one of the blades (2), and a dial (52) matching the pointer (51) is fixedly arranged at a corresponding position on the housing (1).

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