Underground coal mining equipment

Abstract

The utility model belongs to the technical field of underground coal mining ventilation, and particularly relates to underground coal mining equipment which comprises an air pipe, an air blower is installed at the rear end of the air pipe, a notch matched with a primary filter is formed in the front end of the air pipe, and a sealing gasket is clamped between a supporting plate arranged on the inner wall of the air pipe and the primary filter. A plurality of quick-mounting components are mounted on the air pipe on two sides of the primary filter, a negative pressure alarm component is mounted in the air pipe and comprises an air inlet pipe, a through hole opposite to the bottom end of the air inlet pipe is formed in the air pipe, a box body is connected to the top end of the air inlet pipe, and a hollow vibration disc and a supporting block are mounted on the upper inner end face and the lower inner end face of the box body respectively; an inner hole of the supporting block is opposite to an inner hole of the air inlet pipe, and air outlet holes are formed in the bottom of the box body on the peripheral side of the supporting block. After the primary filter is blocked, the negative pressure alarm assembly is driven by airflow to vibrate at high frequency to give an alarm sound to remind personnel to replace the primary filter; and the primary filter can be quickly assembled and disassembled by operating the quick assembly component.

Description

Technical Field

[0001] The utility model belongs to the technical field of underground coal mining ventilation, and in particular relates to underground coal mining equipment. Background Art

[0002] The utility model patent with authorization announcement number CN 220424847 U discloses an underground coal mining ventilation and dust removal equipment, including: a blower body, the surface of which is connected to an air duct; a cleaning mechanism, which is used to timely clean the filter screen inside the ventilation and dust removal equipment, and the cleaning mechanism is arranged at one end of the air duct; in the device, a filter frame draws air and particulate impurities in the underground to flow into a filter belt net, the filter belt net blocks the particulate impurities in the air, and the filtered air flows into the air duct and drives the wind wheel to rotate, the wind wheel rotates to drive the filter belt net transmission, and the brush scrapes the surface of the filter belt net in the transmission, so as to facilitate timely cleaning of dust adhered to the surface of the filter belt net, reduce the probability of the filter belt net being blocked, and ensure the working efficiency of the underground coal mining ventilation and dust removal equipment.

[0003] However, the above mechanism has the following problems: 1. Since primary filters, medium-efficiency filters, etc. are generally used for air filtration, the effect of cleaning the filter with a brush is poor, and the filter needs to be disassembled and cleaned. However, the loading and unloading of the filter in the prior art is inconvenient; in addition, the staff cannot promptly detect whether the filter is blocked, which easily affects the ventilation effect of the ventilation equipment. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide underground coal mining equipment to solve the problem that the filter screen is inconvenient to load and unload during ventilation work of the existing underground coal mining equipment, and the staff cannot promptly detect whether the filter screen is blocked, thus easily affecting the ventilation effect of the ventilation equipment.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows: underground coal mining equipment includes an air duct, a blower is installed at the rear end of the air duct, a notch adapted to install a primary filter is opened at the front end of the air duct, loading and unloading grooves are opened on the air duct on both sides of the primary filter, a support plate is provided on the inner wall of the air duct, a sealing gasket is clamped between the support plate and the primary filter, a plurality of quick-install components are installed on the air duct on both sides of the primary filter, and the quick-install components include a connecting seat, and the connecting seat is connected by The connecting pin is rotatably connected to a handle, and a pressure plate is connected to the side of the handle, and the pressure plate is adapted to press against the primary filter. A negative pressure alarm component is installed inside the air duct, and the negative pressure alarm component includes an air inlet pipe, and a through hole is opened on the air duct opposite to the bottom end of the air inlet pipe. The top end of the air inlet pipe is connected to a box body, and a hollow vibration disk and a support block are respectively installed on the upper and lower inner end surfaces of the box body, and the inner hole of the support block is opposite to the inner hole of the air inlet pipe, and an air outlet hole is opened at the bottom of the box body around the support block.

[0006] The beneficial effects of the utility model are as follows: when the primary filter is clogged, the negative pressure alarm component emits an alarm sound by quickly vibrating the hollow vibration disk under the action of the negative pressure airflow, thereby reminding personnel to replace and clean the primary filter; the operator can quickly remove the primary filter or lock the primary filter by operating the quick-release component.

[0007] In order to achieve stable locking of the primary filter;

[0008] As a further improvement of the above technical solution: the pressing plate is a trapezoidal block structure, the upper and lower bottom surfaces of the pressing plate are arranged parallel to the front end surface of the sealing gasket, and the inclined surface of the pressing plate is arranged toward the sealing gasket.

[0009] The beneficial effect of this improvement is that when the operator rotates the handle, the pressure plate is driven to rotate, thereby causing the inclined surface of the pressure plate to move and squeeze the primary filter, pressing the primary filter against the sealing gasket to complete the locking of the installation position of the primary filter.

[0010] In order to ensure the installation stability of the primary filter;

[0011] As a further improvement of the above technical solution: the sealing pad is an elastic square frame rubber pad structure.

[0012] The beneficial effect of this improvement is that the elastic support of the sealing gasket can ensure that the pressure plate is tightly pressed on the primary filter, thereby achieving stable installation of the primary filter.

[0013] In order to ensure the installation stability of the negative pressure alarm component;

[0014] As a further improvement of the above technical solution: the bottom end of the air inlet pipe is connected with a flange, and the flange is installed on the air duct by bolts.

[0015] The beneficial effect of this improvement is that the setting of the flange can ensure that the negative pressure alarm component is installed on the air duct stably as a whole.

[0016] In order to make the hollow vibration plate vibrate at high frequency and emit an alarm sound under the impetus of airflow;

[0017] As a further improvement of the above technical solution: the hollow vibration disk is a metal disk structure which is hollow inside and convex in the middle, the axis of the hollow vibration disk is colinear with the axis of the support block, and the bottom surface of the hollow vibration disk is flatly fitted with the top surface of the support block.

[0018] The beneficial effect of this improvement is that after the airflow passes through the support block, the hollow vibration disk is repeatedly elastically deformed and quickly reset, thereby emitting a high-frequency vibration alarm sound.

[0019] In order to make the air flow evenly discharged from the box body to improve the uniformity of the vibration of the hollow vibration plate;

[0020] As a further improvement of the above technical solution: there are multiple air outlet holes, which are evenly arranged around the axis of the box body, and the axis of the box body is colinear with the axis of the support block.

[0021] The beneficial effect of this improvement is that the air in the box body can be discharged through multiple evenly distributed air outlets, effectively ensuring the uniformity of the air pressure difference in each area inside the box body in the radial direction of the hollow vibration disk, thereby improving the performance and durability of the hollow vibration disk.

[0022] In order to make the air flow evenly discharged from the box body to improve the uniformity of the vibration of the hollow vibration plate;

[0023] As a further improvement of the above technical solution: a dispersion disk is installed on the outer side of the support block, and the dispersion disk is a circular ring plate structure.

[0024] The beneficial effect of this improvement is that the dispersion disk plays a guiding role, allowing the airflow to flow evenly in different radial directions of the hollow vibration disk, ensuring the stability of the vibration of the hollow vibration disk, thereby improving the performance and durability of the hollow vibration disk.

[0025] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a cross-sectional structural diagram of the utility model;

[0027] Figure 2 It is a schematic diagram of the structure of the utility model;

[0028] Figure 3 It is an enlarged view of A in the utility model;

[0029] Figure 4 It is an enlarged view of B in the utility model;

[0030] Figure 5 It is an enlarged view of C in the utility model;

[0031] In the figure: 1. air duct; 11. loading and unloading groove; 12. support plate; 13. sealing gasket; 2. quick-release assembly; 21. connecting seat; 22. connecting pin; 23. handle; 24. pressure plate; 3. primary filter; 4. negative pressure alarm assembly; 41. air inlet pipe; 42. flange; 43. box body; 44. support block; 45. dispersion disk; 46. air outlet; 47. hollow vibration disk; 5. blower. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

[0033] Embodiment 1:

[0034] like Figure 1—5 shows: underground coal mining equipment, including an air duct 1, a blower 5 is installed at the rear end of the air duct 1, a slot adapted to install a primary filter 3 is provided at the front end of the air duct 1, loading and unloading slots 11 are provided on the air duct 1 on both sides of the primary filter 3, a support plate 12 is provided on the inner wall of the air duct 1, a sealing gasket 13 is clamped between the support plate 12 and the primary filter 3, a plurality of quick-install components 2 are installed on the air duct 1 on both sides of the primary filter 3, the quick-install components 2 include a connecting seat 21, the connecting seat 21 is rotatably connected to a handle 23 through a connecting pin 22, a pressure plate 24 is connected to the side of the handle 23, and the pressure plate 24 is adapted to be pressed against the primary filter 3 A negative pressure alarm component 4 is installed inside the air duct 1, and the negative pressure alarm component 4 includes an air inlet pipe 41. A through hole opposite to the bottom end of the air inlet pipe 41 is opened on the air duct 1, and a box body 43 is connected to the top of the air inlet pipe 41. A hollow vibration disk 47 and a support block 44 are respectively installed on the upper and lower inner end surfaces of the box body 43. The inner hole of the support block 44 is opposite to the inner hole of the air inlet pipe 41, and an air outlet hole 46 is opened at the bottom of the box body 43 on the side of the support block 44. When the primary filter 3 is blocked, the negative pressure alarm component 4 emits an alarm sound by quickly vibrating the hollow vibration disk 47 under the action of the negative pressure airflow, thereby reminding personnel to replace and clean the primary filter 3;The operator can quickly disassemble the primary filter 3 or lock the primary filter 3 by operating the quick-install component 2. The pressing plate 24 is a trapezoidal block structure. The upper and lower bottom surfaces of the pressing plate 24 are arranged parallel to the front end surface of the sealing gasket 13. The inclined surface of the pressing plate 24 is arranged toward the sealing gasket 13. When the operator rotates the handle 23, the pressing plate 24 is driven to rotate, and the inclined surface of the pressing plate 24 moves to squeeze the primary filter 3, and the primary filter 3 is pressed against the sealing gasket 13 to complete the installation position locking of the primary filter 3. The sealing gasket 13 is a square frame rubber pad structure with elasticity. The elastic support of the sealing gasket 13 can ensure that the pressure plate 24 is pressed tightly on the primary filter 3 to achieve stable installation of the primary filter 3. The bottom end of the air inlet pipe 41 is connected with a flange 42, and the flange 42 is installed on the air duct 1 by bolts. The setting of the flange 42 can ensure that the negative pressure alarm component 4 is stably installed on the air duct 1 as a whole. The hollow vibration plate 47 is a metal disc structure with a hollow interior and a convex middle. The axis of the vibration disk 47 is collinear with the axis of the support block 44. The bottom surface of the hollow vibration disk 47 is flatly attached to the top surface of the support block 44. After the airflow passes through the support block 44, the hollow vibration disk 47 is repeatedly elastically deformed and quickly reset, thereby emitting a high-frequency vibration alarm sound. The number of the air outlet holes 46 is multiple, and they are evenly arranged around the axis of the box body 43. The axis of the box body 43 is collinear with the axis of the support block 44. The air in the box body 43 can be discharged through multiple evenly distributed air outlet holes 46, effectively ensuring the uniformity of the air pressure difference in each area inside the box body 43 in the radial direction of the hollow vibration disk 47, thereby improving the performance and durability of the hollow vibration disk 47. A dispersion disk 45 is installed on the outside of the support block 44. The dispersion disk 45 is a circular plate structure. The dispersion disk 45 plays a guiding role, so that the airflow flows evenly in different radial directions of the hollow vibration disk 47, ensuring the stability of the vibration of the hollow vibration disk 47, thereby improving the performance and durability of the hollow vibration disk 47. ;

[0035] The working principle of the present technical solution is as follows: when the blower 5 is working, the air in the tunnel is filtered by the primary filter 3 and then discharged, thereby realizing ventilation of the air in the tunnel; when the primary filter 3 is blocked, the external air enters the air inlet pipe 41 under the suction of the blower 5, pushes the bottom plate of the hollow vibration disk 47 to move up, enters the interior of the box body 43 from the gap between the hollow vibration disk 47 and the support block 44, and then disperses through the dispersion disk 45 and is discharged through the air outlet 46. When the gas is discharged through the air outlet 46, the pressure difference between the box body 43 and the outside air is reduced, the hollow vibration disk 47 releases its elastic potential energy, and the bottom of the hollow vibration disk 47 is reset to block the top of the support block 44. When the pressure difference between the internal pressure of the box body 43 and the outside air increases again, the hollow vibration disk 47 is deformed again, and the high-frequency vibration is realized through the rapid and repeated deformation of the hollow vibration disk 47 to emit an alarm sound, reminding the staff to replace and clean the primary filter 3; when removing the primary filter 3, the operator holds the handle 23 and rotates the pressure plate 24 to the two sides of the primary filter 3. The operator holds the two sides of the primary filter 3 located in the loading and unloading groove 11 to quickly remove the primary filter 3; after the primary filter 3 is cleaned, the operator puts the primary filter 3 into the port of the air duct 1, so that the primary filter 3 is flatly attached to the sealing gasket 13, and then rotates the handle 23 in the opposite direction to make the inclined surface of the pressure plate 24 push the primary filter 3 to move in the direction of the sealing gasket 13, and squeezes the sealing gasket 13 to complete the installation and locking of the primary filter 3.

[0036] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0037] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. Underground coal mining equipment, characterized in that: The invention comprises an air duct (1), wherein a blower (5) is installed at the rear end of the air duct (1), a notch adapted to install a primary filter (3) is provided at the front end of the air duct (1), loading and unloading grooves (11) are provided on the air duct (1) on both sides of the primary filter (3), a support plate (12) is provided on the inner wall of the air duct (1), a sealing gasket (13) is clamped between the support plate (12) and the primary filter (3), a plurality of quick-install components (2) are installed on the air duct (1) on both sides of the primary filter (3), the quick-install components (2) comprise a connecting seat (21), the connecting seat (21) is rotatably connected to a handle (23) via a connecting pin (22), and the handle (23) is rotatably connected to the connecting seat (21) via a connecting pin (22), and the handle (23) is rotatably connected to the connecting seat (21) via a connecting pin (22). A pressure plate (24) is connected to the side of the air duct (3), and the pressure plate (24) is adapted to be pressed against the primary filter (3). A negative pressure alarm component (4) is installed inside the air duct (1), and the negative pressure alarm component (4) includes an air inlet pipe (41). A through hole opposite to the bottom end of the air inlet pipe (41) is opened on the air duct (1), and the top end of the air inlet pipe (41) is connected to a box body (43). The upper and lower inner end surfaces of the box body (43) are respectively installed with a hollow vibration disk (47) and a support block (44), and the inner hole of the support block (44) is opposite to the inner hole of the air inlet pipe (41). An air outlet hole (46) is opened at the bottom of the box body (43) around the support block (44).

2. The underground coal mining equipment according to claim 1, characterized in that: The pressing plate (24) is a trapezoidal block structure, the upper and lower bottom surfaces of the pressing plate (24) are arranged parallel to the front end surface of the sealing gasket (13), and the inclined surface of the pressing plate (24) is arranged toward the sealing gasket (13).

3. The underground coal mining equipment according to claim 1, characterized in that: The sealing pad (13) is a square frame-shaped rubber pad structure with elasticity.

4. The underground coal mining equipment according to claim 1, characterized in that: The bottom end of the air inlet pipe (41) is connected to a flange (42), and the flange (42) is mounted on the air duct (1) by means of bolts.

5. The underground coal mining equipment according to claim 1, characterized in that: The hollow vibration disk (47) is a metal disk structure which is hollow inside and convex in the middle. The axis of the hollow vibration disk (47) is colinear with the axis of the support block (44). The bottom surface of the hollow vibration disk (47) is flatly fitted to the top surface of the support block (44).

6. The underground coal mining equipment according to claim 1, characterized in that: The number of the air outlet holes (46) is multiple and they are evenly arranged around the axis of the box body (43), and the axis of the box body (43) is colinear with the axis of the support block (44).

7. The underground coal mining equipment according to claim 1, characterized in that: A dispersion disk (45) is installed on the outer side of the support block (44), and the dispersion disk (45) is a circular ring plate structure.

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