Movable ventilation enhancing equipment for coal mine

Abstract

The movable ventilation enhancing equipment comprises a ventilation box body and axial flow fan bodies, the front portion and the rear portion of the ventilation box body are open, a plurality of axial flow fan bodies are arranged in the ventilation box body, the axes of the axial flow fan bodies are arranged in the longitudinal direction, and the air blowing direction of the axial flow fan bodies is from back to front. And porous dustproof cover plates are coaxially mounted at the front end opening and the rear end opening of the axial flow fan. The ventilation box has the beneficial effects that the plurality of axial flow fan bodies are arranged in the ventilation box body side by side, so that the air circulation effect during ventilation can be enhanced through the arrangement of the plurality of axial flow fan bodies; and meanwhile, the ventilation intensity can be flexibly adjusted in the ventilation use process by selecting the opening and closing number of the axial flow fan bodies, the opening and closing number and the opening and closing area of the axial flow fan bodies can be reasonably selected conveniently according to actual use requirements, and the flexibility in the ventilation use process is improved.

Description

Technical Field

[0001] The utility model relates to the field of coal mine safety production auxiliary components, in particular to movable ventilation enhancement equipment for coal mines. Background Art

[0002] In recent years, with the use of mechanized equipment with large cutting depth, high power and large transport capacity, the harmful gases generated during coal mining operations on the working face have also increased significantly, especially in the ultra-large mining height working face, this problem is more prominent. Specifically in the process of safe production in coal mines, in order to ensure that the air in the tunnel is normal and harmless, if only relying on natural air circulation, the ventilation effect is poor, so it is necessary to use ventilation enhancement equipment to force air circulation in the tunnel. However, when designing the current ventilation enhancement equipment, first of all, its flexibility of use is poor, resulting in general ventilation effect. At the same time, after the ventilation enhancement equipment has been used for a period of time, a large amount of dust and dirt will accumulate at the air inlet position of the equipment. Due to the lack of necessary cleaning means, the efficiency of the ventilation enhancement equipment will be significantly reduced. Utility Model Content

[0003] The purpose of the present utility model is to provide a movable ventilation enhancement equipment for coal mines in order to solve the above-mentioned problems. A plurality of axial flow fan bodies are arranged side by side inside the ventilation box body, and then the arrangement of the plurality of axial flow fan bodies can enhance the air circulation effect during ventilation use. At the same time, by selecting the number of opening and closing of the axial flow fan bodies, the ventilation intensity can be flexibly adjusted during the ventilation process, which is convenient for reasonably selecting the number of opening and closing and the opening and closing area of ​​the axial flow fan body according to actual use needs. See the following description for details.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] The utility model provides a portable ventilation enhancement device for coal mines, comprising a ventilation box body and an axial flow fan body, wherein the front and rear ends of the ventilation box body are both open, and a plurality of axial flow fan bodies arranged longitudinally along the axis are arranged inside the ventilation box body, the blowing direction of the axial flow fan body is from back to front, and the plurality of axial flow fan bodies are arranged side by side, and the front and rear ports of the axial flow fan are both coaxially installed with a porous dust cover plate;

[0006] The outside of the axial fan body is coaxially fixed with a clamp bracket, and the outer top of the clamp bracket is vertically fixed with a suspension rod through a connecting sleeve, and the top of the suspension rod is installed with a combined connection component, and the combined connection component is partially fixed to the inner top of the ventilation box body, and the suspension rod is detachably connected to the ventilation box body through the corresponding combined connection component;

[0007] An end cleaning assembly for sweeping and cleaning the dust cover at the rear end of the axial flow fan body is installed on the rear portion of the top surface of the ventilation box body at a position corresponding to the axial flow fan body.

[0008] Preferably, a base is installed flat on the bottom surface of the ventilation box body, and a plurality of movable wheels with universal and locking functions are installed around the bottom surface of the base, and a traction ring for connecting with external traction equipment is installed on one side end face of the base.

[0009] Preferably, the combined connection components include a mating seat and a fixed seat, the top end of the suspension rod is vertically fixed with the mating seat, and the front of the mating seat is longitudinally provided with a limiting hole, the top surface of the ventilation box body is vertically fixed with the fixed seat at a position above the mating seat, and the bottom surface of the fixed seat is vertically provided with a mating groove, and the mating groove corresponds one-to-one with the mating seat and is vertically slidably fitted.

[0010] Preferably, the front end faces of the fixing seats are provided with mounting holes in the longitudinal direction, the mounting holes are vertically connected to the corresponding matching grooves, and the mounting holes are longitudinally coaxial with the corresponding limiting holes, the mounting holes are longitudinally coaxially slidably matched with the limiting rods, and the rear ends of the limiting rods are longitudinally slidably matched with the corresponding limiting holes, the front ends of the limiting rods extending out of the corresponding front end faces of the fixing seats are coaxially fixed with handles, the part of the limiting rod located between the corresponding handle and the front end face of the fixing seat is coaxially gap-fitted with a spring, and the two ends of the spring are respectively fixedly connected to the corresponding handle and the front end face of the fixing seat.

[0011] Preferably, the horizontal cross-sections of the mating seat and the mating groove are both rectangular, the mating grooves are both blind grooves in the vertical direction, and the top ends of the mating seats are in contact with the top ends of the corresponding mating grooves.

[0012] Preferably, the end cleaning components include a support rod and an L-shaped mounting bracket, and the rear part of the top surface of the ventilation box body is vertically provided with a matching hole at a position corresponding to the axial flow fan body, and the matching holes are coaxially inserted with the support rod in a vertical sliding matching manner, and the bottom end of the support rod is fixedly installed with the L-shaped mounting bracket, and the top surface of the horizontal part of the L-shaped mounting bracket is fixedly connected to the corresponding bottom end of the support rod, and the front of the vertical part of the L-shaped mounting bracket is densely and evenly fixed with flexible bristles arranged along the longitudinal direction, and the front end of the flexible bristles exceeds the rear end of the axial flow fan body.

[0013] Preferably, guide holes are vertically opened on the top surface of the ventilation box body at both sides of the support rod, and the guide holes are coaxially inserted with guide rods in a vertical sliding fit manner, and the bottom ends of the guide rods are fixed on the top surface of the horizontal part corresponding to the L-shaped mounting frame.

[0014] Preferably, the top ends of the support rods are each provided with a handle for easy holding.

[0015] Preferably, a matching sleeve is coaxially fixed on the top surface of the ventilation box body at a position outside the matching hole, and the matching sleeve is vertically slidably fitted on the periphery of the corresponding support rod, and the periphery of the matching sleeve is radially interspersed with a tightening stud in a threaded fit, and the inner end of the tightening stud can be tightened on the periphery of the corresponding support rod.

[0016] Preferably, an elastic pressure block having an outer diameter smaller than that of the clamping stud is coaxially fixed to the inner end of the clamping stud, and a handwheel for convenient gripping is coaxially fixed to the outer end of the clamping stud.

[0017] When the above-mentioned movable ventilation enhancement equipment for coal mines is used, specifically when the ventilation enhancement is performed in coal mine tunnels, since a plurality of the axial flow fan bodies are arranged side by side inside the ventilation box body, the air circulation effect during ventilation can be enhanced by the arrangement of the plurality of axial flow fan bodies. At the same time, the ventilation intensity can be flexibly adjusted during ventilation by selecting the number of opening and closing of the axial flow fan bodies. It is convenient to reasonably select the number of opening and closing and the opening and closing area of ​​the axial flow fan body according to actual use needs, thereby improving the flexibility during ventilation use. Specifically, the axial flow fan body is arranged in the ventilation box body. During internal assembly and disassembly, when assembling, the axial flow fan body and the clamp bracket can be detachably fixed to the interior of the ventilation box body by means of the vertical sliding engagement of the mating seat and the mating groove of the combined connecting assembly and the longitudinal sliding engagement of the limiting rod and the limiting hole. At the same time, the mating seat can be vertically disengaged from the mating groove and the axial flow fan body can be disassembled from the front of the ventilation box body by simply pulling the limiting rod out of the limiting hole. The assembly and disassembly of the axial flow fan body at the front of the ventilation box body is simple and easy to implement, which makes it easy to assemble the axial flow fan body in the The front part of the ventilation box body is used for ventilation enhancement, and it is convenient for the subsequent disassembly of the axial flow fan body for inspection and maintenance. Specifically, at the rear position of the ventilation box body, since the ventilation box body is equipped with the end cleaning assembly at the corresponding position at the rear of the axial flow fan body, the support rod of the end cleaning assembly can drive the L-shaped mounting frame and the flexible brush to move back and forth vertically through the vertical sliding of the supporting rod along the matching hole and the matching sleeve, so that the surface of the dust cover at the rear end of the axial flow fan body can be swept and cleaned by the reciprocating lifting of the flexible brush, which is convenient for The dust and dirt accumulated on the surface of the dust cover are swept and cleaned in time, which is conducive to maintaining the efficient use of the axial flow fan body. When the dust cover is cleaned, the elastic pressure block is pressed against the surface of the support rod by twisting the clamping stud, so that the support rod can be locked and cannot slide vertically along the matching hole and the matching sleeve. The locking of the support rod against vertical sliding can be released by simply loosening the clamping stud. The vertical sliding locking and unlocking method of the support rod is simple and easy to implement, which is convenient for keeping the support rod stationary after cleaning and use, and is convenient for unlocking the support rod in time when cleaning and use.

[0018] The beneficial effects are as follows: 1. The utility model has a plurality of axial flow fan bodies arranged side by side inside the ventilation box body, and the arrangement of the plurality of axial flow fan bodies can enhance the air circulation effect during ventilation use. At the same time, by selecting the number of axial flow fan bodies to be opened and closed, the ventilation intensity can be flexibly adjusted during ventilation use, and the number of opening and closing and the opening and closing area of ​​the axial flow fan bodies can be reasonably selected according to actual use needs, thereby improving the flexibility of ventilation use;

[0019] 2. The axial flow fan body and the clamp bracket can be detachably fixed inside the ventilation box body by means of the vertical sliding fit of the matching seat and the matching groove of the combined connection component and the longitudinal sliding fit of the limiting rod and the limiting hole. At the same time, the matching seat can be vertically disengaged from the matching groove and the axial flow fan body can be disassembled from the front of the ventilation box body by simply pulling the limiting rod out of the limiting hole. The combination and disassembly of the axial flow fan body in the front of the ventilation box body is simple and easy to implement, which is convenient for combining the axial flow fan body in the front of the ventilation box body for ventilation enhancement and is also convenient for subsequent disassembly of the axial flow fan body for inspection and maintenance.

[0020] 3. The ventilation box body is equipped with an end cleaning assembly at the corresponding position of the rear part of the axial flow fan body. Then, the support rod of the end cleaning assembly slides vertically along the matching hole and the matching sleeve to drive the L-shaped mounting frame and the flexible brush to move back and forth vertically. The flexible brush can move back and forth to clean the surface of the dust cover at the rear end of the axial flow fan body, so that the dust and dirt accumulated on the surface of the dust cover can be swept away in time, which is conducive to maintaining the efficient use of the axial flow fan body.

[0021] 4. When the dust cover is cleaned, the elastic pressure block is pressed against the surface of the support rod by twisting the clamping stud to lock the support rod from sliding vertically along the matching hole and the matching sleeve. The locking of the support rod from sliding vertically can be released by simply loosening the clamping stud. The vertical sliding locking and unlocking method of the support rod is simple and easy to implement, which is convenient for keeping the support rod stationary after cleaning and use, and convenient for unlocking the support rod in time when cleaning and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0023] Figure 1 This is the overall axonometric diagram of the utility model Figure 1 ;

[0024] Figure 2 This utility model Figure 1 Schematic cross-section diagram;

[0025] Figure 3 This utility model Figure 2 A local enlarged view of point A;

[0026] Figure 4 This is the overall axonometric diagram of the utility model Figure 2 ;

[0027] Figure 5 This utility model Figure 4 Schematic cross-section diagram;

[0028] Figure 6 This utility model Figure 5 A partial enlarged view of point B;

[0029] Figure 7 This utility model Figure 1 A front view schematic diagram of

[0030] Figure 8 This utility model Figure 1 Schematic top view of .

[0031] The following are the descriptions of the reference numerals:

[0032] 1. End cleaning assembly; 101. Guide rod; 102. Guide hole; 103. Handle; 104. Support rod; 105. Matching sleeve; 106. Clamping stud; 107. Handwheel; 108. Flexible bristles; 109. L-shaped mounting bracket; 1010. Elastic pressure block; 1011. Matching hole; 2. Ventilation box body; 3. Base; 301. Traction ring; 302. Moving wheel; 4. Axial fan body; 401. Clamp bracket; 402. Hanging rod; 403. Connecting sleeve; 404. Dust cover; 5. Combined connecting assembly; 501. Matching seat; 502. Matching groove; 503. Fixed seat; 504. Limit rod; 505. Spring; 506. Handle; 507. Limiting hole; 508. Mounting hole. DETAILED DESCRIPTION

[0033] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0034] See also Figures 1-8As shown, the utility model provides a movable ventilation enhancement equipment for coal mines, including a ventilation box body 2 and an axial flow fan body 4. The front and rear of the ventilation box body 2 are open, and the interior of the ventilation box body 2 is provided with multiple axial flow fan bodies 4 arranged along the longitudinal axis. The blowing direction of the axial flow fan body 4 is from back to front, and multiple axial flow fan bodies 4 are arranged side by side, and the front and rear ports of the axial flow fan are coaxially installed with a porous dust cover 404. The purpose of such an arrangement is that the air circulation effect during ventilation use can be enhanced by the arrangement of multiple axial flow fan bodies 4, and at the same time, the ventilation intensity can be flexibly adjusted during ventilation use by selecting the number of opening and closing of the axial flow fan body 4, which is convenient for reasonably selecting the opening and closing number and opening and closing area of ​​the axial flow fan body 4 according to actual use needs.

[0035] See also Figures 1-6As shown, the outside of the axial fan body 4 is coaxially fixed with a clamp bracket 401, and the outer top of the clamp bracket 401 is vertically fixed with a suspension rod 402 through a connecting sleeve 403, and the top of the suspension rod 402 is installed with a combined connection component 5, which is partially fixed to the inner top of the ventilation box body 2, and the suspension rod 402 is detachably connected to the ventilation box body 2 through the corresponding combined connection component 5. Specifically, the combined connection component 5 includes a matching seat 501 and a fixing seat 503, and the top of the suspension rod 402 is vertically fixed. There is a matching seat 501, and the front of the matching seat 501 is provided with a limiting hole 507 in the longitudinal direction. The top surface of the inner top of the ventilation box body 2 is vertically fixed with a fixing seat 503 above the matching seat 501, and the bottom surface of the fixing seat 503 is vertically provided with a matching groove 502. The matching groove 502 corresponds to the matching seat 501 one by one and is vertically slidably matched. The front end surface of the fixing seat 503 is provided with a mounting hole 508 in the longitudinal direction. The mounting holes 508 are vertically connected to the corresponding matching grooves 502, and the mounting holes 508 are vertically connected to the corresponding limiting holes 507. In the coaxial comparison, the mounting holes 508 are all coaxially slidably matched with the limit rods 504 along the longitudinal direction, and the rear ends of the limit rods 504 are longitudinally slidably matched with the corresponding limit holes 507. The front ends of the limit rods 504 extending out of the front end faces of the corresponding fixing seats 503 are coaxially fixed with handles 506. The part of the limit rods 504 located between the corresponding handles 506 and the front end faces of the fixing seats 503 is coaxially fitted with springs 505, and the two ends of the springs 505 are respectively fixedly connected to the corresponding handles 506 and the front end faces of the fixing seats 503. The purpose of this arrangement is to By combining the vertical sliding fit of the mating seat 501 and the mating groove 502 of the connecting component 5 and the longitudinal sliding fit of the limiting rod 504 and the limiting hole 507, the axial flow fan body 4 and the clamp bracket 401 can be detachably fixed inside the ventilation box body 2. At the same time, it is only necessary to pull the limiting rod 504 out of the limiting hole 507 to make the mating seat 501 vertically out of the mating groove 502 and remove the axial flow fan body 4 from the front of the ventilation box body 2. The combination and disassembly method of the axial flow fan body 4 at the front of the ventilation box body 2 is simple and easy to implement.

[0036] See also Figures 1-6As shown, the rear part of the top surface of the ventilation box body 2 is installed at the position corresponding to the axial flow fan body 4, and an end cleaning component 1 is installed for sweeping and cleaning the dust cover 404 at the rear end of the axial flow fan body 4. Specifically, the end cleaning component 1 includes a support rod 104 and an L-shaped mounting bracket 109. The rear part of the top surface of the ventilation box body 2 is vertically provided with a matching hole 1011 at the position corresponding to the axial flow fan body 4, and the matching hole 1011 is coaxially inserted with the support rod 104 in a vertical sliding matching manner. The bottom end of the support rod 104 is fixedly installed with an L-shaped mounting bracket 109, and the top surface of the horizontal part of the L-shaped mounting bracket 109 is aligned with the bottom end of the corresponding support rod 104. The front of the vertical part of the L-shaped mounting frame 109 is fixed with densely and evenly distributed flexible bristles 108 arranged in the longitudinal direction, and the front ends of the flexible bristles 108 exceed the rear end of the axial flow fan body 4. The reason for this arrangement is that the support rod 104 of the end cleaning component 1 can drive the L-shaped mounting frame 109 and the flexible bristles 108 to move back and forth vertically by sliding vertically along the matching hole 1011 and the matching sleeve 105, so that the surface of the dust cover 404 at the rear end of the axial flow fan body 4 can be swept and cleaned by the reciprocating lifting of the flexible bristles 108, so that the dust and dirt accumulated on the surface of the dust cover 404 can be swept and cleaned in time.

[0037] See also Figures 1-6 As shown, the ventilation box body 2, the combined connection assembly 5 and the end cleaning assembly 1 are respectively optimized as follows. Specifically, with respect to the ventilation box body 2, a base 3 is installed flat on the bottom surface of the ventilation box body 2, and a plurality of moving wheels 302 with universal and locking functions are installed around the bottom surface of the base 3. A traction ring 301 for connecting with external traction equipment is installed on one side end face of the base 3. With this arrangement, it is first convenient to drive the base 3 and the ventilation box body 2 to move and change the use position in the coal mine tunnel by rolling the moving wheel 302, and at the same time, it is convenient to drive the base 3 and the ventilation box body 2 to move with the help of external traction equipment by connecting the traction ring 301 with the external traction equipment. Specifically for the combined connecting component 5, the horizontal cross-sectional shapes of the mating seat 501 and the mating groove 502 are both rectangular, so that the mating seat 501 has a good positioning and guiding design when sliding vertically along the mating groove 502. At the same time, optionally, the mating grooves 502 are all blind grooves in the vertical direction, and the top ends of the mating seats 501 are in contact with the top ends of the corresponding mating grooves 502. With such an arrangement, when the mating seat 501 slides vertically along the mating grooves 502, when the limiting hole 507 slides vertically with the mating seat 501 to be coaxial with the limiting rod 504, an obvious prompt can be given by the way that the top ends of the mating seat 501 are in contact with the top ends of the corresponding mating grooves 502.

[0038] Specific to the end cleaning assembly 1, optionally, the top surface of the ventilation box body 2 is vertically provided with guide holes 102 at both sides of the support rod 104, and the guide holes 102 are coaxially inserted with guide rods 101 in a vertical sliding fit, and the bottom ends of the guide rods 101 are fixed to the top surface of the horizontal portion of the corresponding L-shaped mounting bracket 109. Preferably, the length of the guide rods 101 is consistent with that of the support rods 104. If so, it is convenient for the support rods 104 to drive the L-shaped mounting bracket 109 and the flexible bristles 108 to vertically reciprocate and lift the cleaning process. By vertically sliding the guide rods 101 along the guide holes 102, the L-shaped mounting bracket 109 and the flexible bristles 108 can be guided and corrected during the lifting process, thereby preventing the guide rods 101 from driving the L-shaped mounting bracket 109 to rotate horizontally and misaligned. At the same time, optionally, the top of the support rods 104 is equipped with a handle 103 for easy holding, so that the support rods 104 can be driven to lift and slide vertically by applying force by holding the handles 103. Further optionally, the top surface of the ventilation box body 2 is coaxially fixed with a matching sleeve 105 at the position outside the matching hole 1011, and the matching sleeve 105 is sleeved on the periphery of the corresponding support rod 104 in a vertical sliding matching manner, and the periphery of the matching sleeve 105 is radially interspersed with a tightening stud 106 in a threaded matching manner, and the inner end of the tightening stud 106 can be pressed on the periphery of the corresponding support rod 104, and the inner end of the tightening stud 106 is coaxially fixed with an elastic pressing block 1010 with an outer diameter smaller than the outer diameter of the tightening stud 106, The outer ends of the tightening studs 106 are coaxially fixed with a handwheel 107 for easy holding. The reason for this arrangement is that by holding the handwheel 107 and twisting the tightening studs 106, the elastic pressure block 1010 is pressed against the surface of the support rod 104, which can lock the support rod 104 from sliding vertically along the matching hole 1011 and the matching sleeve 105. The lock on the support rod 104 that cannot slide vertically can be released by simply holding the handwheel 107 and loosening the tightening studs 106. The vertical sliding locking and unlocking method of the support rod 104 is simple and easy to implement.

[0039] The above structure is adopted, specifically when the ventilation of coal mine tunnels is enhanced, because a plurality of axial flow fan bodies 4 are arranged side by side inside the ventilation box body 2, the air circulation effect during ventilation can be enhanced by the arrangement of the plurality of axial flow fan bodies 4. At the same time, the ventilation intensity can be flexibly adjusted during ventilation by selecting the number of opening and closing of the axial flow fan bodies 4. It is convenient to reasonably select the number of opening and closing and the opening and closing area of ​​the axial flow fan bodies 4 according to actual use needs, thereby improving the flexibility of ventilation use. Specifically, when the axial flow fan bodies 4 are combined and disassembled inside the ventilation box body 2, when they are combined, By combining the vertical sliding fit of the matching seat 501 and the matching groove 502 of the connecting component 5 and the longitudinal sliding fit of the limiting rod 504 and the limiting hole 507, the axial flow fan body 4 and the clamp bracket 401 can be detachably fixed inside the ventilation box body 2. At the same time, it is only necessary to pull the limiting rod 504 out of the limiting hole 507 to make the matching seat 501 vertically out of the matching groove 502 and the axial flow fan body 4 can be removed from the front of the ventilation box body 2. The combination and disassembly method of the axial flow fan body 4 in the front of the ventilation box body 2 is simple and easy to implement, which makes it convenient to combine the axial flow fan body 4 in the front of the ventilation box body 2 for ventilation enhancement. , and at the same time, it is convenient for the subsequent disassembly of the axial flow fan body 4 for inspection and maintenance. Specifically, as for the rear position of the ventilation box body 2, since the ventilation box body 2 is installed with an end cleaning component 1 at the corresponding position of the rear of the axial flow fan body 4, the support rod 104 of the end cleaning component 1 can drive the L-shaped mounting frame 109 and the flexible brush 108 to move back and forth vertically through the vertical sliding of the matching hole 1011 and the matching sleeve 105, so that the surface of the dust cover 404 at the rear end of the axial flow fan body 4 can be swept and cleaned by the reciprocating lifting of the flexible brush 108, so as to remove the dust accumulated on the surface of the dust cover 404. The dust and dirt are swept away in time to be cleaned, which is conducive to maintaining the efficient use of the axial flow fan body 4. When the dust cover 404 is cleaned, the elastic pressure block 1010 is pressed against the surface of the support rod 104 by twisting the tightening stud 106 to lock the support rod 104 from sliding vertically along the matching hole 1011 and the matching sleeve 105. The locking of the support rod 104 from sliding vertically can be released by loosening the tightening stud 106. The vertical sliding locking and unlocking method of the support rod 104 is simple and easy to implement, which is convenient for keeping the support rod 104 stationary after cleaning and use, and is convenient for unlocking the support rod 104 in time when cleaning and use.

[0040] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A movable ventilation enhancement device for coal mines, comprising a ventilation box body (2) and an axial flow fan body (4), characterized in that: The front and rear ends of the ventilation box body (2) are both open, and a plurality of axial flow fan bodies (4) are arranged longitudinally with their axes inside the ventilation box body (2). The blowing direction of the axial flow fan bodies (4) is from back to front, and a plurality of the axial flow fan bodies (4) are arranged side by side. The front and rear ports of the axial flow fan are both coaxially mounted with a porous dust cover (404); The outside of the axial fan body (4) is coaxially fixedly connected to a clamp bracket (401), and the outer top of the clamp bracket (401) is vertically fixed with a suspension rod (402) through a connecting sleeve (403), and the top of the suspension rod (402) is installed with a combined connection component (5), and the combined connection component (5) is partially fixed to the inner top of the ventilation box body (2), and the suspension rod (402) is detachably connected to the ventilation box body (2) through the corresponding combined connection component (5); An end cleaning assembly (1) for sweeping and cleaning the dust cover (404) at the rear end of the axial flow fan body (4) is installed on the rear portion of the top surface of the ventilation box body (2) at a position corresponding to the axial flow fan body (4).

2. The movable ventilation enhancement equipment for coal mines according to claim 1, characterized in that: A base (3) is installed flat on the bottom surface of the ventilation box body (2), and a plurality of movable wheels (302) with universal and locking functions are installed around the bottom surface of the base (3), and a traction ring (301) for connecting to an external traction device is installed on one end surface of the base (3).

3. The movable ventilation enhancement equipment for coal mines according to claim 1 or 2, characterized in that: The combined connection components (5) each include a mating seat (501) and a fixing seat (503), the mating seat (501) is vertically fixed to the top of the suspension rod (402), and a limiting hole (507) is longitudinally provided in front of the mating seat (501), the fixing seat (503) is vertically fixed to the top surface of the ventilation box body (2) above the mating seat (501), and the bottom surface of the fixing seat (503) is vertically provided with a mating groove (502), and the mating groove (502) corresponds one-to-one to the mating seat (501) and is vertically slidably fitted.

4. The movable ventilation enhancement equipment for coal mines according to claim 3, characterized in that: The front end faces of the fixing seats (503) are all provided with mounting holes (508) in the longitudinal direction, the mounting holes (508) are all vertically connected to the corresponding matching grooves (502), and the mounting holes (508) are all longitudinally coaxial with the corresponding limiting holes (507), the mounting holes (508) are all longitudinally coaxially slidably matched with the limiting rods (504), and the rear ends of the limiting rods (504) are longitudinally slidably matched with the corresponding limiting holes (507), the front ends of the limiting rods (504) extending from the corresponding front end faces of the fixing seats (503) are coaxially fixed with handles (506), the part of the limiting rods (504) located between the corresponding handles (506) and the front end faces of the fixing seats (503) are coaxially gap-matched with springs (505), and the two ends of the springs (505) are respectively fixedly connected to the corresponding handles (506) and the front end faces of the fixing seats (503).

5. The movable ventilation enhancement equipment for coal mines according to claim 4, characterized in that: The horizontal cross-sections of the mating seat (501) and the mating groove (502) are both rectangular, the mating grooves (502) are both blind grooves in the vertical direction, and the top ends of the mating seats (501) are in contact with the top ends of the corresponding mating grooves (502).

6. The movable ventilation enhancement equipment for coal mines according to claim 1, 2, 4 or 5, characterized in that: The end cleaning assembly (1) includes a support rod (104) and an L-shaped mounting bracket (109); a matching hole (1011) is vertically opened at the rear of the top surface of the ventilation box body (2) at a position corresponding to the axial flow fan body (4); and the matching hole (1011) is coaxially inserted with the support rod (104) in a vertical sliding matching manner; the bottom end of the support rod (104) is fixedly mounted with the L-shaped mounting bracket (109), and the top surface of the horizontal part of the L-shaped mounting bracket (109) is fixedly connected to the corresponding bottom end of the support rod (104); the front of the vertical part of the L-shaped mounting bracket (109) is densely and evenly fixed with flexible bristles (108) arranged in the longitudinal direction, and the front end of the flexible bristles (108) exceeds the rear end of the axial flow fan body (4).

7. The movable ventilation enhancement equipment for coal mines according to claim 6, characterized in that: The top surface of the ventilation box body (2) is provided with guide holes (102) vertically at positions on both sides of the support rod (104), and the guide holes (102) are coaxially inserted with guide rods (101) in a vertical sliding fit manner, and the bottom ends of the guide rods (101) are fixed to the top surface of the horizontal part corresponding to the L-shaped mounting frame (109).

8. The movable ventilation enhancement equipment for coal mines according to claim 7, characterized in that: The top ends of the support rods (104) are each provided with a handle (103) for easy holding.

9. The movable ventilation enhancement equipment for coal mines according to claim 7 or 8, characterized in that: A matching sleeve (105) is coaxially fixed to the top surface of the ventilation box body (2) at a position outside the matching hole (1011), and the matching sleeve (105) is vertically slidably fitted around the periphery of the corresponding support rod (104), and a clamping stud (106) is radially inserted through the periphery of the matching sleeve (105) in a threaded fitting manner, and the inner end of the clamping stud (106) can be clamped on the periphery of the corresponding support rod (104).

10. The movable ventilation enhancement equipment for coal mines according to claim 9, characterized in that: An elastic pressure block (1010) having an outer diameter smaller than that of the clamping stud (106) is coaxially fixed to the inner end of the clamping stud (106), and a hand wheel (107) for easy gripping is coaxially fixed to the outer end of the clamping stud (106).

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