Mine explosion-proof ventilator

Abstract

The utility model relates to the technical field of mine ventilation, in particular to a mine anti-explosion ventilator which comprises a ventilator body, a fan is installed on the ventilator body, a fixing ring is installed at one end of the ventilator body, and a rotatable filtering assembly is arranged in the fixing ring. The filter assembly comprises an annular filter screen, a notch is formed in the top of the annular filter screen, a servo motor is arranged in the notch in the top of the annular filter screen, and a central framework is fixedly connected to the center of the annular filter screen. At the moment, dust attached to the two sides of the annular filter screen can be cleaned through airflow blown out by a fan in the air duct body, operation is easy, use is convenient, after cleaning is completed, the annular filter screen is rotated to the position parallel to the air duct body, the filtering function during ventilation is achieved, cleaning is not needed through bristles, and the air duct can be used for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of mine ventilation, and specifically relates to a mine explosion-proof ventilation duct. Background Art

[0002] The basic task of mine ventilation is to supply sufficient fresh air underground to meet the oxygen needs of personnel; dilute harmful gases and dust underground, prevent a large amount of flammable and explosive gases from accumulating underground, and ensure safe production.

[0003] In the prior art, such as a mine ventilation explosion-proof air duct proposed in the patent application number "CN202321119911.7", which includes an air duct, a mounting mechanism and a air flow control mechanism. As long as the air flow control mechanism starts to operate, the cleaning brush will continuously clean the filtering structure in the air flow control mechanism.

[0004] However, in the above patent application, only the surface of the filter screen is cleaned and dusted by the cleaning brush. Not only can only one side of the filter screen be dusted, but also the cleaning brush is always in dynamic motion, and the bristles on its surface will continuously rub against the filter screen, making the bristles prone to wear and unable to be used for a long time. Content of the Utility Model

[0005] The purpose of the utility model is to provide a mine explosion-proof ventilation duct to solve the problems raised in the above background art.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] A mine explosion-proof ventilation duct includes a duct main body, a fan is installed on the duct main body, a fixing ring is installed at one end of the duct main body, and a rotatable filtering component is arranged inside the fixing ring.

[0008] The filtering component includes an annular filter screen, a notch is arranged at the top of the annular filter screen, a servo motor is arranged in the notch at the top of the annular filter screen, a central skeleton is fixedly connected to the center of the annular filter screen, the output end of the servo motor is fixedly connected to the top of the central skeleton for driving the central skeleton and the annular filter screen to rotate, a fixed shaft is fixedly connected to the fixing ring, and the fixed shaft is fixedly connected to the servo motor for fixing the servo motor to the fixing ring.

[0009] Preferably, convex sleeves are fixedly connected to both sides of the fixing ring, a return spring is fixedly connected to the inner wall of the convex sleeve, one end of the return spring is fixedly connected to a positioning bead, and a part of the positioning bead protrudes outside the convex sleeve.

[0010] Preferably, an outer frame is fixedly connected to the outer surface of the annular filter screen, arc-shaped positioning concave portions are arranged on both sides of the outer frame, and the arc-shaped positioning concave portions are adapted to the positioning beads.

[0011] Preferably, a wear-resistant sleeve is fixedly connected to the bottom of the fixing ring, and the bottom of the central skeleton extends into the wear-resistant sleeve and is rotatably connected to the wear-resistant sleeve.

[0012] Preferably, one end of the air duct main body away from the fixing ring is fixedly connected with a mounting ring, and fixing holes arranged in an annular array are formed in the mounting ring.

[0013] Preferably, a T-shaped mounting member is fixedly connected to the outer surface of the fixing ring, limiting plates are fixedly connected to both sides of the T-shaped mounting member on the outer surface of the air duct main body, a fixing bolt is arranged on the T-shaped mounting member, and the fixing bolt penetrates through the T-shaped mounting member and is in threaded connection with the air duct main body for mounting the fixing ring to one end of the air duct main body.

[0014] The beneficial effects of the present utility model:

[0015] By providing a rotatable annular filter screen, the annular filter screen can be rotated to a position perpendicular to the air duct main body. At this time, the airflow blown by the fan inside the air duct main body can be used to clean the dust attached to both sides of the annular filter screen. The operation is simple and convenient to use. After the cleaning is completed, the annular filter screen is rotated back to a position parallel to the air duct main body to realize the filtering function during ventilation. There is no need to clean with bristles and it can be used for a long time. Description of the drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts;

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

[0018] Figure 2 is the present utility model Figure 1 a schematic diagram of the structure of the fixing ring part;

[0019] Figure 3 is the present utility model Figure 2 a schematic diagram of the bottom of the fixing ring;

[0020] Figure 4 is the present utility model Figure 2 a cross-sectional view of the fixing ring;

[0021] Figure 5 is the present utility model Figure 2 a schematic diagram of the internal structure of the convex sleeve.

[0022] The reference numerals in the drawings are as follows:

[0023] 1. Air duct main body, 2. Fan, 3. Fixed ring, 4. Annular filter screen, 5. Servo motor, 6. Central framework, 7. Fixed shaft, 8. Raised sleeve, 9. Return spring, 10. Positioning bead, 11. External frame, 12. Arc-shaped positioning concave, 13. Wear-resistant sleeve, 14. Mounting ring, 15. Fixed hole, 16. T-shaped mounting piece, 17. Limiting plate, 18. Fixed bolt. Detailed implementation mode

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] A mine explosion-proof ventilation duct, including an air duct main body 1, a fan 2 is installed on the air duct main body 1, a fixed ring 3 is installed at one end of the air duct main body 1, and a rotatable filtering component is arranged in the fixed ring 3.

[0026] The filtering component includes an annular filter screen 4, there is a notch at the top of the annular filter screen 4, a servo motor 5 is arranged in the notch at the top of the annular filter screen 4, a central framework 6 is fixedly connected to the center of the annular filter screen 4, and the output end of the servo motor 5 is fixedly connected to the top of the central framework 6 for driving the central framework 6 and the annular filter screen 4 to rotate. A fixed shaft 7 is fixedly connected to the fixed ring 3, and the fixed shaft 7 is fixedly connected to the servo motor 5 for fixing the servo motor 5 to the fixed ring 3.

[0027] As Figure 1 , the air duct main body 1 is a part of the explosion-proof ventilation duct in the prior art. The main part of the fan 2 is located inside the air duct main body 1. The rotation of the fan 2 can drive the external air flow through the fan 2. The fan 2 is a fan that can rotate forward and backward in the prior art. The servo motor 5 can rotate forward and backward. Both the fan 2 and the servo motor 5 are externally connected to a power supply and are automatically controlled through a PLC circuit. The servo motor 5 is located at the notch in the center of the top of the annular filter screen 4, so that the servo motor 5 does not hinder the rotation of the annular filter screen 4. The fan 2 is a fan with adjustable wind power. When dust removal is performed on the annular filter screen 4, the wind power of the fan 2 can be increased to achieve a better blowing and dust removal effect.

[0028] Both sides of the fixed ring 3 are fixedly connected with raised sleeves 8. A return spring 9 is fixedly connected to the inner wall of the raised sleeve 8. One end of the return spring 9 is fixedly connected with a positioning bead 10, and a part of the positioning bead 10 protrudes outside the raised sleeve 8.

[0029] As Figure 2 and Figure 5, the opening of the convex sleeve 8 is an arc surface, which can restrict the positioning beads 10, so that more than half of the positioning beads 10 cannot protrude outside the convex sleeve 8, and only the surface part can protrude outside the convex sleeve 8.

[0030] The outer surface of the annular filter screen 4 is fixedly connected with an outer frame 11, and arc-shaped positioning concave portions 12 are provided on both sides of the outer frame 11. The arc-shaped positioning concave portions 12 are adapted to the positioning beads 10.

[0031] Such as Figure 2 and Figure 5 , when the annular filter screen 4 drives the outer frame 11 to rotate, the arc-shaped positioning concave portion 12 can be moved to a position corresponding to the positioning bead 10.

[0032] The bottom of the fixing ring 3 is fixedly connected with a wear-resistant sleeve 13. The bottom of the central skeleton 6 extends into the wear-resistant sleeve 13 and is rotatably connected with the wear-resistant sleeve 13.

[0033] Such as Figure 2 and Figure 3 , by using the rotational connection between the bottom of the central skeleton 6 and the wear-resistant sleeve 13, the stability of the central skeleton 6 and the annular filter screen 4 during rotation can be improved.

[0034] One end of the air duct main body 1 away from the fixing ring 3 is fixedly connected with a mounting ring 14, and fixing holes 15 arranged in an annular array are provided on the mounting ring 14.

[0035] Such as Figure 1 , through the cooperation of the mounting ring 14 and the fixing holes 15, it is convenient to install one end of the air duct main body 1 on an external mechanism.

[0036] The outer surface of the fixing ring 3 is fixedly connected with a T-shaped mounting member 16. Limiting plates 17 are fixedly connected to the outer surface of the air duct main body 1 and on both sides of the T-shaped mounting member 16. A fixing bolt 18 is arranged on the T-shaped mounting member 16. The fixing bolt 18 penetrates through the T-shaped mounting member 16 and is threadedly connected with the air duct main body 1 for installing the fixing ring 3 to one end of the air duct main body 1.

[0037] Such as Figure 1 , there are threaded holes on the surface of the air duct main body 1 to realize the threaded connection with the fixing bolt 18. The limiting plates 17 on both sides can limit the movement of the T-shaped mounting member 16, prevent relative rotation between the fixing ring 3 and the air duct main body 1, and at the same time can quickly align the T-shaped mounting member 16 and the threaded holes on the surface of the air duct main body 1 together.

[0038] The working principle of a mine explosion-proof ventilation duct provided by the present utility model is as follows:

[0039] When the servo motor 5 drives the annular filter screen 4 to rotate to a position perpendicular to the main body 1 of the air duct, the fan 2 can blow the air flow out from the inside of the main body 1 of the air duct, blow off the dust attached to the surface of the main body 1 of the air duct, and perform dust cleaning. After the dust cleaning is completed, the servo motor 5 drives the annular filter screen 4 to rotate to a position parallel to the main body 1 of the air duct, so that the annular filter screen 4 filters during the ventilation of the main body 1 of the air duct;

[0040] During the process of the annular filter screen 4 rotating to a position parallel to the main body 1 of the air duct, the positioning beads 10 can be squeezed into the convex sleeve 8. When the annular filter screen 4 rotates to a position parallel to the main body 1 of the air duct, the return spring 9 stretches to push the positioning beads 10, and the positioning beads 10 are pressed into the arc-shaped positioning concave 12 to assist in positioning the annular filter screen 4 and improve the stability of the annular filter screen 4.

[0041] Compared with the related technology, a mine explosion-proof ventilation duct provided by the present utility model has the following beneficial effects:

[0042] By setting the rotatable annular filter screen 4, the present utility model enables the annular filter screen 4 to rotate to a position perpendicular to the main body 1 of the air duct. At this time, the air flow blown out by the fan 2 inside the main body 1 of the air duct can clean the dust attached to both sides of the annular filter screen 4. The operation is simple and convenient to use. After the cleaning is completed, the annular filter screen 4 is rotated to a position parallel to the main body 1 of the air duct to realize the filtering function during ventilation. There is no need to clean with bristles and it can be used for a long time.

[0043] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A mine explosion-proof ventilation duct, comprising a duct body (1), characterized in that: The fan (2) is installed on the wind tube body (1), a fixing ring (3) is installed at one end of the wind tube body (1), and a rotatable filter component is arranged inside the fixing ring (3); The filter assembly comprises an annular filter (4), a notch is arranged at the top of the annular filter (4), a servo motor (5) is arranged in the notch at the top of the annular filter (4), a central frame (6) is fixedly connected to the center of the annular filter (4), an output end of the servo motor (5) is fixedly connected to the top of the central frame (6) and is used to drive the central frame (6) and the annular filter (4) to rotate, a fixed shaft (7) is fixedly connected to the fixing ring (3), and the fixed shaft (7) and the servo motor (5) are fixedly connected and are used to fix the servo motor (5) to the fixing ring (3).

2. A mine explosion-proof ventilation duct according to claim 1, characterized in that: Both sides of the fixing ring (3) are fixedly connected with a raised sleeve (8), the inner wall of the raised sleeve (8) is fixedly connected with a return spring (9), one end of the return spring (9) is fixedly connected with a positioning bead (10), and part of the positioning bead (10) protrudes outside the raised sleeve (8).

3. The mine explosion-proof ventilation duct according to claim 2, characterized in that: The outer surface of the annular filter (4) is fixedly connected to an external frame (11), and arc-shaped positioning recesses (12) are provided on both sides of the external frame (11), and the arc-shaped positioning recesses (12) are matched with the positioning beads (10).

4. The mine explosion-proof ventilation duct according to claim 1, characterized in that: The bottom of the fixing ring (3) is fixedly connected to a wear-resistant sleeve (13), and the bottom of the central frame (6) extends into the inside of the wear-resistant sleeve (13) and is rotatably connected to the wear-resistant sleeve (13).

5. The mine explosion-proof ventilation duct according to claim 1, characterized in that: One end of the wind tube body (1) away from the fixing ring (3) is fixedly connected to a mounting ring (14), and the mounting ring (14) is provided with fixing holes (15) in a circular array.

6. The mine explosion-proof ventilation duct according to claim 1, characterized in that: The outer surface of the fixing ring (3) is fixedly connected to a T-shaped mounting piece (16); the outer surface of the wind tube body (1) and the two sides of the T-shaped mounting piece (16) are fixedly connected to limiting plates (17); the T-shaped mounting piece (16) is provided with a fixing bolt (18); the fixing bolt (18) passes through the T-shaped mounting piece (16) and is threadedly connected to the wind tube body (1) for mounting the fixing ring (3) to one end of the wind tube body (1).

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