Mining energy-saving ventilator

Abstract

The mining energy-saving ventilator comprises a machine shell, a bottom frame is welded to the surface of the machine shell, the machine shell is communicated in the left side direction and the right side direction, a ventilation mechanism is arranged in the machine shell to achieve ventilation adjusting operation, the ventilation mechanism comprises a middle shaft barrel and an adjusting part, and the adjusting part comprises blades which are circumferentially arranged on the surface of the middle shaft barrel at equal intervals; and the deflection angle of the blade is adjusted through the rotating unit. The invention relates to the technical field of ventilators. According to the mining energy-saving ventilator, the ventilation mechanism is arranged, the deflection angle of the blades is adjusted through the rotating unit, the diameter of the blades is adjusted through the expansion unit, and therefore under the condition that the rotating wind speed of the whole blades is kept unchanged, the wind power is adjusted by changing self adjustment of the blades; moreover, the energy consumption of the equipment is effectively saved, the requirements under various working conditions can be met, and meanwhile, the use efficiency of the ventilator is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilators, in particular to an energy-saving ventilator for mining. Background Art

[0002] Mining energy-saving ventilators are mainly used for the ventilation needs of mines and are suitable for various mine ventilation systems, including metal mines, non-metallic mines and coal mines. They can provide efficient and reliable ventilation solutions in various mine environments.

[0003] The reference patent name is: (Patent Publication Number: CN110454425A, Patent Publication Date: 2019-11-15) The technical field of energy saving and noise reduction of local axial flow fans for mines, in particular, relates to a local axial flow fan for mines equipped with an inner-inserted casing, characterized in that it includes an inner-inserted casing, an air collector, a first-stage body, a first-stage impeller, a second-stage impeller, a second-stage body, a flameproof three-phase asynchronous motor, and a noise-absorbing diffusion cone. The present invention provides a local axial flow fan for mines equipped with an inner-inserted casing, wherein the inner-inserted casing is installed on the second-stage body of the fan. The inner-inserted casing is mainly composed of a first side branch pipe, a second side branch pipe, and an expansion pipe. The process is simple, convenient for integrated design, and can be mass-produced. At the same time, while ensuring the ventilation performance of the fan, the turbulent state near the casing is improved, the aerodynamic noise of the fan is reduced, the flow loss of the fan is reduced, the efficiency of the fan is improved, and the service life of the fan is extended.

[0004] Based on the description in the above-mentioned documents, during the use of existing mining ventilators, as the underground operating conditions change, simply increasing the rotational speed to increase the ventilation volume consumes a lot of energy for the equipment, and fails to achieve simultaneous improvement of ventilation effect based on energy saving, so that the ventilator fails to better adapt to ventilation treatments with different needs. For this reason, the present invention provides an energy-saving mining ventilator. Summary of the Invention

[0005] In response to the deficiencies in the prior art, the present invention provides an energy-saving mine ventilator, which solves the problem that during the use of existing mine ventilators, as the operating conditions in the mine change, simply increasing the speed to increase the ventilation volume consumes a lot of energy for the equipment, and fails to achieve simultaneous improvement in ventilation effect based on energy saving, so that the ventilator cannot better adapt to ventilation treatments with different needs.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an energy-saving ventilator for mining, comprising a casing, a base frame welded to the surface of the casing, and the casing being through-connected on the left and right sides, a ventilation mechanism provided inside the casing to realize ventilation adjustment operation, the ventilation mechanism comprising:

[0007] The center shaft is aligned with the center of the through-hole of the housing, and the center shaft is driven by the driving unit to rotate;

[0008] The adjusting part includes blades arranged equidistantly in a circle on the surface of the central axis tube, and the blades are adjusted in deflection angle by a rotating unit, and an expansion unit extending outward from the circle is arranged inside the blades to adjust the blade diameter, and the adjustment of the blade diameter is achieved by a pushing unit arranged inside the central axis tube.

[0009] Preferably, the drive unit includes a support frame installed on the inner side of the casing, a drive motor is installed at the center of the support frame, and one end of the drive motor output shaft is installed with a drive shaft through a coupling, and one end of the drive shaft is fixed to the center of the side of the central shaft tube.

[0010] Preferably, the rotating unit includes:

[0011] The spiral gear ring, whose center is aligned with the central axis of the through-hole of the casing, is driven to rotate by the power assembly;

[0012] The connecting shaft passes through the surface of the central axis tube and is connected to the central axis tube through a bearing. The end of the connecting shaft located on the inner side of the central axis tube is connected and fixed with a spiral bevel gear, and the surface of the spiral bevel gear is meshed with the surface of the spiral gear ring, so that the spiral gear ring rotates while driving the spiral bevel gear to rotate, and the end of the connecting shaft located on the outer side of the central axis tube is connected and fixed to the blade.

[0013] Preferably, the power assembly includes a reduction motor, which is installed on the inner side of the protective cover, and the protective cover is installed on the side of the central shaft to achieve synchronous rotation after being driven, and one end of the output shaft of the reduction motor is connected and fixed to the center of the smooth surface of the spiral gear ring through a coupling.

[0014] Preferably, the expansion unit includes:

[0015] The expansion leaf is located inside the blade and has a placement groove toward the outside of the circumference. The expansion leaf is located inside the placement groove to achieve horizontal movement operation through a sliding component, and telescopic components are provided on both sides of the expansion leaf to increase the arc length of the expansion leaf;

[0016] The push rod is installed on the inner arc surface of the expanded leaf, and the push rod passes through the blade, connecting shaft and spiral bevel gear in sequence and extends to the inside of the central shaft tube. The push rod can slide relative to the expanded leaf, connecting shaft and spiral bevel gear, and a push spring is provided on the surface of the push rod, and the two ends of the push spring are fixed to the opposite sides of the expanded leaf and the blade, and the push spring realizes the sliding of the expanded leaf relative to the blade inward due to its reset elasticity that is not affected by external force.

[0017] Preferably, the sliding assembly includes a placement block symmetrically installed on the inner side of the placement groove, and a sliding bar is fixed on the fan surface on both sides of the expanded leaf, and a sliding groove adapted to slide with the sliding bar is opened on the opposite side of the placement block, and the sliding bar slides inside the sliding groove to realize the horizontal movement of the expanded leaf toward the outside of the circumference.

[0018] Preferably, the telescopic assembly includes an extension block, and fan-shaped grooves are provided on both sides of the expansion leaf, and the bottom of the extension block is rotatably connected to the inner side of the fan-shaped groove through a rotating rod, and a torsion spring is provided on the surface of the rotating rod, and the two ends of the torsion spring are fixed to the opposite sides of the extension block and the fan-shaped groove. The torsion spring has a reset elasticity that is not affected by external force, so that the extension block rotates toward the outside of the fan-shaped groove with the rotating rod as the center.

[0019] Preferably, the pushing unit includes:

[0020] The first inclined block is provided with a plurality of equal distances around the bearing circumference, and the plane of the first inclined block passes through the connecting plate, and the center where the connecting plates gather is driven by the pneumatic component provided inside the central shaft tube;

[0021] The second inclined blocks rotate with the bottom end of the abutting rod and are provided in a number corresponding to that of the first inclined blocks.

[0022] Preferably, the inclined surfaces of the first inclined block and the second inclined block correspond to each other, and the inclined surfaces of the first inclined block and the second inclined block are opposite to each other, and the first inclined block pushes the second inclined block during the movement so that the second inclined block moves toward the pushing rod, and the first inclined block and the second inclined block maintain relative sliding between them through a limiting member.

[0023] Preferably, the pneumatic assembly includes a cylinder, and a piston rod is slidably connected to the interior of the cylinder, and the extended end of the piston rod is fixed to the center of the connecting plate, and the cylinder is installed on the inner side of the central shaft through an external bracket.

[0024] The present invention provides an energy-saving ventilator for mining. Compared with the prior art, it has the following advantages:

[0025] 1. The energy-saving mine ventilator is equipped with a ventilation mechanism, uses a rotating unit to adjust the blade deflection angle, and uses an expansion unit to adjust the blade diameter. In this way, while keeping the overall blade rotation wind speed unchanged, the wind force can be adjusted by changing the blade itself, effectively saving the energy consumption of the equipment itself, and being able to adapt to the needs of various working conditions, while improving the efficiency of the ventilator.

[0026] 2. The energy-saving mine ventilator is equipped with a rotating unit, which uses a reduction motor to drive the rotation of the spiral gear ring. The rotation of the spiral gear ring drives the synchronous rotation of multiple spiral bevel gears meshing with it, and makes the blades rotate at a small angle to increase the wind force. In this way, the blade angle can be adjusted within a certain range to increase the wind force and ventilation efficiency. There is no need to replace blades or equipment, which is convenient for adjustment to different situations.

[0027] 3. The energy-saving mine ventilator is equipped with an expansion unit. The push unit is used to push the movable rod to drive the movement of the blades, thereby increasing the diameter of the entire blade. The extension block rotates toward the outside of the fan-shaped slot with the rotating rod as the center under the elastic reset of the torsion spring, thereby improving the compensation for the arc length of the blades and synchronously adjusting the blade angle, thereby achieving a greater increase in wind force, further improving the working efficiency of the equipment, and saving energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an external three-dimensional structural diagram of the present invention;

[0029] Figure 2 It is an internal three-dimensional structural diagram of the present invention;

[0030] Figure 3 This is a cross-sectional view of the internal three-dimensional structure of the shaft cylinder of the present invention from a first perspective;

[0031] Figure 4 This is a cross-sectional view of the internal three-dimensional structure of the shaft tube of the present invention from a second perspective;

[0032] Figure 5 It is a three-dimensional structural diagram of the rotating unit of the present invention;

[0033] Figure 6 This is a three-dimensional structural diagram of the propulsion unit of the present invention;

[0034] Figure 7 It is a partial three-dimensional structural diagram of the rotating unit of the present invention;

[0035] Figure 8 is a three-dimensional structural diagram of the expansion unit of the present invention;

[0036] Figure 9 This is a three-dimensional exploded view of the sliding assembly of the present invention;

[0037] Figure 10 This is a three-dimensional exploded view of the telescopic assembly of the present invention;

[0038] Figure 11 For the present invention Figure 10 A magnified view of the local structure at point A.

[0039] In the picture:

[0040] 1- housing;

[0041] 2- bottom frame;

[0042] 3-Middle shaft;

[0043] 4-drive unit, 41-support frame, 42-drive motor, 43-drive shaft;

[0044] 5-adjusting part, 51-blade;

[0045] 6-rotation unit, 61-spiral gear ring, 62-power assembly, 621-reduction motor, 622-protective cover, 63-connecting shaft, 64-spiral bevel gear;

[0046] 7- expansion unit, 71- leaf, 72- placement slot, 73- sliding assembly, 731- placement block, 732- slide bar, 733- slide slot, 74- abutment rod, 75- abutment spring, 76- telescopic assembly, 761- extension block, 762- fan-shaped slot, 763- rotation rod, 764- torsion spring;

[0047] 8-pushing unit, 81-first inclined block, 82-connecting plate, 83-pneumatic assembly, 831-cylinder, 832-piston rod, 84-second inclined block. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0049] See also Figures 1-11 , the present invention provides a technical solution:

[0050] A mining energy-saving ventilator includes a housing 1, a mesh cover is provided at the edge of the housing 1 to achieve the fixing operation of the housing 1, and a base frame 2 is welded to the surface of the housing 1, and the housing 1 is through-through on the left and right sides. A ventilation mechanism is provided inside the housing 1 to achieve ventilation adjustment operation, and the ventilation mechanism includes:

[0051] The center of the central cylinder 3 is aligned with the center of the through-hole of the housing 1, and the central cylinder 3 is driven by the driving unit 4 to rotate;

[0052] The adjusting portion 5 includes blades 51 equidistantly arranged in a circle on the surface of the central axis tube 3, and the blades 51 are adjusted in deflection angle by a rotating unit 6, and an expansion unit 7 extending outward from the circle is provided inside the blades 51 to adjust the blade diameter, and the adjustment of the blade diameter is achieved by a pushing unit 8 provided inside the central axis tube 3.

[0053] There is a gap between the blades 51 and the surface of the central shaft tube 3 so that the blades 51 can rotate when the angle is adjusted. The specific arrangement of the blades 51 is determined by the actual situation and the spacing, and is not limited to the 5 blades in the figure.

[0054] By providing a ventilation mechanism, the rotation unit 6 is used to adjust the deflection angle of the blade 51, and the expansion unit 7 is used to adjust the blade diameter. In this way, while keeping the overall blade rotation wind speed unchanged, the wind force can be adjusted by changing the adjustment of the blade 51 itself, effectively saving the energy consumption of the equipment itself, and being able to adapt to the needs of various working conditions, while improving the efficiency of the fan.

[0055] See also Figure 2-3 In the embodiment of the present invention, the driving unit 4 includes a support frame 41 installed on the inner side of the casing 1, a driving motor 42 is installed at the center of the support frame 41, and one end of the output shaft of the driving motor 42 is installed with a driving shaft 43 through a coupling, and one end of the driving shaft 43 is fixed to the center of the side of the central shaft tube 3.

[0056] The drive motor 42 is a three-phase asynchronous motor, which is electrically connected to an external power supply. The drive motor 42 can be opened and closed by a person operating the control panel, and the drive motor 42 has a self-locking function in the prior art.

[0057] See also Figure 3-5 and Figure 7 In this embodiment of the present invention, the rotating unit 6 includes:

[0058] The spiral gear ring 61 has its center aligned with the central axis of the through-hole of the housing 1 and is driven to rotate by the power assembly 62;

[0059] The connecting shaft 63 passes through the surface of the central axis tube 3 and is connected to the central axis tube 3 through a bearing. The end of the connecting shaft 63 located on the inner side of the central axis tube 3 is connected and fixed with a spiral bevel gear 64, and the surface of the spiral bevel gear 64 is engaged with the surface of the spiral gear ring 61, so that the spiral gear ring 61 rotates while driving the spiral bevel gear 64 to rotate, and the end of the connecting shaft 63 located on the outer side of the central axis tube 3 is connected and fixed to the blade.

[0060] By providing a rotating unit 6, the reduction motor 621 is used to drive the rotation of the spiral gear ring 61, and the rotation of the spiral gear ring 61 drives the multiple spiral bevel gears 64 meshing with it to rotate synchronously, and the blades 51 are rotated at a small angle to increase the wind force, thereby completing the adjustment of the angle of the blades 51 within a range to increase the wind force and increase the ventilation efficiency, without the need to replace blades or equipment, and conveniently adapting to adjustments in different situations.

[0061] See also Figure 5 In an embodiment of the present invention, the power assembly 62 includes a reduction motor 621, which is installed on the inner side of the protective cover 622, and the protective cover 622 is installed on the side of the central shaft tube 3 to achieve synchronous rotation after being driven, and one end of the output shaft of the reduction motor 621 is connected and fixed to the center of the smooth surface of the spiral gear ring 61 through a coupling.

[0062] The reduction motor 621 is electrically connected to an external power supply, and the reduction motor 621 can be opened and closed by a person operating the control panel, and the motor rotation speed can be adjusted by control. An air inlet and an air outlet are provided on the surface of the protective cover 622 to realize the heat dissipation operation of the motor, and it has a self-locking function in the existing technology to complete the limit operation after adjustment. The above-mentioned self-locking function is an existing mature technology and will not be elaborated in this article, such as the NMRV series reducer and the RV series reducer.

[0063] See also Figure 8-11 In this embodiment of the present invention, the extension unit 7 includes:

[0064] The expansion leaf 71 is located inside the blade 51 and has a placement groove 72 toward the outside of the circumference. The expansion leaf 71 is located inside the placement groove 72 through a sliding assembly 73 to achieve horizontal movement operation. Telescopic assemblies 76 are provided on both sides of the expansion leaf 71 to increase the arc length of the expansion leaf 71.

[0065] The actuating rod 74 is installed on the inner arc surface of the expansion leaf 71, and the actuating rod 74 passes through the blade 51, the connecting shaft 63 and the spiral bevel gear 64 in sequence and extends to the interior of the central shaft tube 3. The actuating rod 74 can slide relative to the expansion leaf 71, the connecting shaft 63 and the spiral bevel gear 64, and a actuating spring 75 is sleeved on the surface of the actuating rod 74, and the two ends of the actuating spring 75 are fixed to the opposite sides of the expansion leaf 71 and the blade 51, and the actuating spring 75 realizes the sliding of the expansion leaf 71 inward relative to the blade 51 under the reset elasticity that is not affected by external force.

[0066] See also Figure 9In the embodiment of the present invention, the sliding assembly 73 includes a placement block 731 symmetrically installed on the inner side of the placement groove 72, and a slide bar 732 is fixed on the fan surface on both sides of the expansion leaf 71, and a slide groove 733 adapted to slide with the slide bar 732 is opened on the opposite side of the placement block 731. The slide bar 732 slides inside the slide groove 733 to realize the horizontal movement of the expansion leaf 71 toward the outside of the circumference.

[0067] See also Figure 10-11 In the embodiment of the present invention, the telescopic assembly 76 includes an extension block 761, and fan-shaped grooves 762 are provided on both sides of the expansion leaf 71, and the bottom of the extension block 761 is rotatably connected to the inner side of the fan-shaped groove 762 through a rotating rod 763. At the same time, a torsion spring 764 is sleeved on the surface of the rotating rod 763, and the two ends of the torsion spring 764 are fixed to the opposite sides of the extension block 761 and the fan-shaped groove 762. The torsion spring 764 has a reset elasticity that is not affected by external force, so that the extension block 761 rotates toward the outside of the fan-shaped groove 762 with the rotating rod 763 as the center.

[0068] The setting of the extension block 761 is to realize the extension block 761 to rotate toward the outside of the fan-shaped slot 762 with the rotating rod 763 as the center through the restoring elasticity of the torsion spring 764 without being affected by external forces, so that the extension block 761 can be compensated for the edge of the outer part of the blade 51 during rotation, thereby improving the compensation of the diameter and arc length of the blade 51. At the same time, in the case of subsequent contraction, the extension block 761 will be when the leaf 71 moves into the blade 51, the inner wall of the blade 51 squeezes the extension block 761, causing the torsion spring 764 to twist and rotate toward the inside of the fan-shaped slot 762 with the rotating rod 763 as the center, and no jamming occurs during the movement. Under controlled operation, the leaf 71 will not collide with the inside of the central axis tube 3 during the extension process, and the extension block 761 will not completely rotate out of the fan-shaped slot 762, thereby realizing the operation of adjusting the diameter of the blade 51, thereby completing the adjustment of the wind force.

[0069] By providing an expansion unit 7, the push unit 8 is used to push the push rod 74 to drive the movement of the expanded leaf 71, thereby increasing the diameter of the entire blade 51, and the extension block 761 is elastically reset by the torsion spring 764 so that the extension block 761 rotates toward the outside of the fan-shaped groove 762 with the rotating rod 763 as the center, thereby improving the compensation for the arc length of the expanded leaf 71, and synchronously combining the adjustment of the angle of the blade 51, so as to achieve a greater increase in wind force, further improve the working efficiency of the equipment, and save energy consumption.

[0070] See also Figure 5-6 In this embodiment of the present invention, the pushing unit 8 includes:

[0071] The first inclined blocks 81 are arranged in multiple equal intervals around the bearing, and the planes of the first inclined blocks 81 pass through the connecting plates 82, and the center where the connecting plates 82 gather is driven by the pneumatic assembly 83 provided inside the central shaft tube 3;

[0072] The second inclined blocks 84 rotate with the bottom end of the abutting rod 74 , and the number of the second inclined blocks 84 is the same as that of the first inclined blocks 81 .

[0073] In an embodiment of the present invention, the inclined surfaces of the first inclined block 81 and the second inclined block 84 correspond to each other, and the inclined surfaces of the first inclined block 81 and the second inclined block 84 are relative, and the first inclined block 81 pushes the second inclined block 84 during the movement so that the second inclined block 84 moves toward the pushing rod 74, and the first inclined block 81 and the second inclined block 84 maintain relative sliding between them through a limiting member.

[0074] The limiting member includes a protrusion installed on the first inclined block 81 and a groove opened on the second inclined block 84, and the protrusion slides inside the groove, so that the second inclined block 84 does not rotate, and during the movement of the first inclined block 81, the second inclined block 84 is pushed to move, and in the operation of realizing the movement, there will be no separation between the first inclined block 81 and the second inclined block 84. At the same time, the limiting member is not limited to the above method, and can also be retained by sliding between the roller and the groove, and the groove opened on the second inclined block 84 is retained, and the roller is installed on the inclined surface of the first inclined block 81 to realize the sliding or rolling of the roller inside the groove, and the operation can also be realized by other limiting members with similar principles, thereby achieving the purpose of keeping the second inclined block from rotating with the rotation of the blade 51.

[0075] See also Figure 6 In an embodiment of the present invention, the pneumatic component 83 includes a cylinder 831, and the interior of the cylinder 831 is slidably connected to a piston rod 832, and the extended end of the piston rod 832 is fixed to the center of the connecting plate 82, and the cylinder 831 is installed on the inner side of the central axis tube 3 through an external bracket.

[0076] The cylinder 831 is connected to the external air circuit, and the cylinder 831 can be opened and closed by personnel operating the control panel, and the cylinder 831 has an existing locking function. The actual locking cylinder can complete the above operation and will not be elaborated in detail. It can realize the positioning locking function when moving to any distance, and the pushing center of the cylinder 831 is consistent with the central axis of the central axis tube 3, so as to ensure that the corresponding first inclined block 81 and the second inclined block 84 can be evenly stressed and will not rotate during the movement.

[0077] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0078] When working, the device is installed at the ventilation hole under the mine, and then the driving motor 42 is started to drive the driving shaft 43 and the central shaft cylinder 3 to rotate synchronously, thereby driving the rotation of multiple blades 51 to achieve air flow;

[0079] When the wind speed needs to be adjusted to suit the working conditions, the wind speed can be adjusted by adjusting the deflection angle of the fan blades and changing the diameter of the fan blades without adjusting the speed.

[0080] The deflection angle of the fan blade is adjusted as follows: by starting the reduction motor 621, the reduction motor 621 drives the rotation of the spiral gear ring 61, and the rotation of the spiral gear ring 61 drives the multiple spiral bevel gears 64 meshing therewith to rotate synchronously, and the rotation of the spiral bevel gears 64 drives the rotation of the blades 51 according to the connecting shaft 63, thereby realizing a small angle rotation operation, and the angle adjustment of the blades 51 meets the actual blade usage requirements. At the same time, the inclination angle of the blades 51 increases, and the wind force generated increases, and the locking operation is realized by the existing limit of the reduction motor 621 itself;

[0081] The adjustment operation of the fan blade diameter is as follows: by starting the cylinder 831, the piston rod 832 is driven to move, and the piston rod 832 drives the connecting plate 82 to move and causes the first inclined block 81 to move horizontally, and then the movement of the first inclined block 81 abuts the second inclined block 84, causing the second inclined block 84 to move in the direction of the abutting rod 74, and synchronously drives the second inclined block 84 and the abutting rod 74 to move, and the abutting rod 74 drives the expanded leaf 71 to move outwardly on the sliding groove 733 with the sliding bar 732, and causes the expanded leaf 71 to extend to the outside of the placement groove 72, and after moving to a certain distance, its extension block 761 is elastically reset by the torsion spring 764, causing the extension block 761 to rotate around the rotating rod 763 as the center and rotate toward the outside of the fan-shaped groove 762, thereby realizing the expansion operation of the arc length of the expanded leaf 71, and at the same time the diameter of the blade 51 increases, the wind force generated increases, and after reaching the distance, the locking operation is realized by the existing limit of the cylinder 831 itself.

[0082] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0083] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A mining energy-saving ventilator, comprising a housing (1), a base frame (2) welded to the surface of the housing (1), and the housing (1) is through-connected in the left and right directions, characterized in that: The housing (1) is provided with a ventilation mechanism inside to implement ventilation adjustment operation, and the ventilation mechanism comprises: The center of the central shaft cylinder (3) is aligned with the center of the through-hole of the housing (1), and the central shaft cylinder (3) is driven by the driving unit (4) to rotate; The adjusting portion (5) comprises blades (51) which are arranged equidistantly on the surface of the central axis tube (3) in a circumferential shape, and the blades (51) are adjusted in deflection angle by means of a rotating unit (6), and an expansion unit (7) extending outward of the circumference is arranged inside the blades (51) to adjust the blade diameter, and the adjustment of the blade diameter is achieved by means of a pushing unit (8) arranged inside the central axis tube (3) to achieve a pushing movement.

2. The energy-saving ventilator for mining according to claim 1, characterized in that: The driving unit (4) comprises a support frame (41) mounted on the inner side of the housing (1), a driving motor (42) being mounted at the center of the support frame (41), and a driving shaft (43) being mounted on one end of the output shaft of the driving motor (42) via a coupling, while one end of the driving shaft (43) is fixed to the center of the side of the central shaft tube (3).

3. The energy-saving ventilator for mining according to claim 1, characterized in that: The rotating unit (6) comprises: The spiral gear ring (61) has a center that is consistent with the central axis of the through-hole of the housing (1) and is driven to rotate by a power assembly (62); The connecting shaft (63) penetrates the surface of the middle shaft tube (3) and is connected to the middle shaft tube (3) via a bearing. One end of the connecting shaft (63) located inside the middle shaft tube (3) is connected and fixed with a spiral bevel gear (64), and the surface of the spiral bevel gear (64) meshes with the surface of the spiral gear ring (61), so that the spiral bevel gear (64) is driven to rotate while the spiral gear ring (61) rotates. The end of the connecting shaft (63) located outside the middle shaft tube (3) is connected and fixed with the blade.

4. The energy-saving ventilator for mining according to claim 3 is characterized in that: The power assembly (62) includes a reduction motor (621), which is mounted on the inner side of the protective cover (622), and the protective cover (622) is mounted on the side of the central shaft tube (3) to achieve synchronous rotation after being driven, and one end of the output shaft of the reduction motor (621) is connected and fixed to the center of the smooth surface of the spiral gear ring (61) through a coupling.

5. The energy-saving ventilator for mining according to claim 1, characterized in that: The expansion unit (7) comprises: The expansion leaf (71) is located inside the blade (51) and is provided with a placement groove (72) toward the outer side of the circumference, and the expansion leaf (71) is located inside the placement groove (72) through a sliding component (73) to realize horizontal movement operation, and telescopic components (76) are provided on both sides of the expansion leaf (71) to realize the increase of the arc length of the expansion leaf (71); The abutment rod (74) is installed at the inner arc surface of the expansion leaf (71), and the abutment rod (74) sequentially penetrates the blade (51), the connecting shaft (63) and the spiral bevel gear (64) and extends to the inside of the central shaft tube (3). The abutment rod (74) can slide relative to the expansion leaf (71), the connecting shaft (63) and the spiral bevel gear (64), and a abutment spring (75) is sleeved on the surface of the abutment rod (74), and the two ends of the abutment spring (75) are fixed to the opposite sides of the expansion leaf (71) and the blade (51), and the abutment spring (75) realizes the expansion leaf (71) sliding inward relative to the blade (51) under the reset elasticity not affected by external force.

6. The energy-saving ventilator for mining according to claim 5, characterized in that: The sliding assembly (73) comprises a placement block (731) symmetrically mounted inside the placement groove (72), and slide bars (732) are fixed at the fan surfaces on both sides of the expansion leaf (71), and a slide groove (733) adapted to slide with the slide bar (732) is opened on the opposite side of the placement block (731), and the slide bar (732) is located inside the slide groove (733) and slides to realize the horizontal movement of the expansion leaf (71) toward the outside of the circumference.

7. The energy-saving ventilator for mining according to claim 5, characterized in that: The telescopic assembly (76) comprises an extension block (761), and fan-shaped grooves (762) are provided on both sides of the expansion leaf (71), and the bottom of the extension block (761) is rotatably connected to the inner side surface of the fan-shaped groove (762) through a rotating rod (763), and a torsion spring (764) is sleeved on the surface of the rotating rod (763), and the two ends of the torsion spring (764) are fixed to the opposite sides of the extension block (761) and the fan-shaped groove (762), and the torsion spring (764) realizes the extension block (761) to rotate toward the outside of the fan-shaped groove (762) with the rotating rod (763) as the center due to its restoring elasticity without being affected by external forces.

8. The energy-saving ventilator for mining according to claim 5, characterized in that: The pushing unit (8) comprises: A plurality of first inclined blocks (81) are arranged equidistantly around the bearing circle, and the plane of the first inclined blocks (81) passes through a connecting plate (82), and the center where the connecting plates (82) gather is driven by a pneumatic component (83) arranged inside the central shaft tube (3); The second inclined block (84) rotates with the bottom end of the abutting rod (74), and is provided in a number corresponding to that of the first inclined blocks (81).

9. The energy-saving ventilator for mining according to claim 8, characterized in that: The inclined surfaces of the first inclined block (81) and the second inclined block (84) correspond to each other, and the inclined surfaces of the first inclined block (81) and the second inclined block (84) are opposite to each other, and the first inclined block (81) pushes against the second inclined block (84) during the movement so that the second inclined block (84) moves in the direction of the pushing rod (74), and the first inclined block (81) and the second inclined block (84) are kept in relative sliding by a limiting member.

10. The energy-saving ventilator for mining according to claim 8, characterized in that: The pneumatic assembly (83) includes a cylinder (831), and a piston rod (832) is slidably connected inside the cylinder (831), and the extended end of the piston rod (832) is fixed to the center of the connecting plate (82), and the cylinder (831) is installed on the inner side of the central shaft tube (3) through an external bracket.

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