Air inlet system for coal mine transportation equipment

Abstract

The utility model relates to the technical field of air inlet systems of transportation equipment, in particular to an air inlet system for coal mine transportation equipment, which comprises an air filtering component, an air inlet pipe, an air shut-off valve, a fire retardant component and an air inlet header pipe which are communicated in sequence, and the air filtering component comprises an air inlet shell, a connecting shell, a pre-filtering mechanism, a mounting mechanism and a secondary filtering mechanism. The pre-filtering mechanism is located on the side, away from the air inlet pipe, of the secondary filtering mechanism, the air filtering assembly is used for filtering air entering the air inlet pipe, the pre-filtering mechanism comprises a pre-filtering shell, and the pre-filtering shell is located on the side, away from the air inlet shell, of the connecting shell. By arranging the pre-filtering mechanism, solid particle impurities in air can be filtered by the pre-filtering mechanism before entering the filter element, the situation that the solid particle impurities block the filter element and affect the filtering effect of the filter element is avoided, and by arranging the mounting mechanism, after being used for a long time, the pre-filtering mechanism can be manually disassembled by personnel to be cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of air intake systems for transportation equipment, in particular to an air intake system for coal mine transportation equipment. Background Art

[0002] The explosion-proof diesel engine trackless rubber-tyred vehicle for mining is a type of coal transport equipment specifically designed for use in mines. Powered by a diesel engine, it features explosion-proof features and is suitable for use in flammable and explosive environments such as mines. Instead of tracks, the vehicle uses rubber wheels as its running components, enabling it to navigate complex terrain such as mines.

[0003] In the prior art, Chinese patent publication number CN210977720U discloses a high-pressure common rail explosion-proof diesel engine intake system, which is characterized in that it includes, from front to back, an air filter, an explosion-proof supercharger, an intercooler, an intake damper assembly, and an intake flame arrester up to an explosion-proof intake manifold, wherein the air outlet of the air filter is connected to the air inlet of the explosion-proof supercharger, the boost outlet of the explosion-proof supercharger is connected to the air inlet of the intercooler through a first boost intake pipe, the air outlet of the intercooler is connected to the air inlet of the intake damper assembly through a second boost intake pipe, the air outlet of the intake damper assembly is connected to the air inlet of the intake flame arrester, and the air outlet of the intake flame arrester is connected to the air inlet of the explosion-proof intake manifold.

[0004] The above patent has the following problems: the working conditions used by the explosion-proof diesel engine involve the presence of flammable and explosive gases, and the surrounding air contains a large amount of solid particle impurities. The above device lacks a pre-filtration mechanism and directly uses an air filter for filtering, causing a large amount of solid particle impurities to enter the air filter element, reducing the service life of the filter element, thereby affecting the filtering effect of the air filter. The interval for personnel to replace the filter element becomes shorter, increasing the labor of the personnel. Based on this, we propose an air intake system for coal mine transportation equipment. Utility Model Content

[0005] The purpose of the utility model is to provide an air intake system for coal mine transportation equipment to solve the problem raised in the above background technology that solid particle impurities entering the air filter element will reduce the service life of the filter element and affect the filtering effect of the air filter.

[0006] The technical solution of the utility model is: an air intake system for coal mine transportation equipment, including an air filter assembly, an air intake pipe, an air shut-off valve, a fire arrester assembly, and an air intake main pipe which are connected in sequence; the air filter assembly includes an air intake shell, a connecting shell, a pre-filter mechanism, an installation mechanism, and a secondary filter mechanism; the pre-filter mechanism is located on a side of the secondary filter mechanism away from the air intake pipe; the air filter assembly is used to filter the air entering the air intake pipe.

[0007] The top end of the filter element is fixedly provided with a first oblique surface and a second oblique surface, and the bottom end of the filter element is fixedly provided with a first oblique surface and a second oblique surface.

[0008] Preferably, the mounting mechanism includes several groups of limit blocks, several mounting slots, and several connecting blocks, the limit blocks, mounting slots, and connecting blocks are all arranged in a ring array, the limit blocks are arranged in pairs, the limit blocks are fixedly connected to the peripheral side of the pre-filter housing, the side walls of the limit blocks are provided with slots, the mounting slots are provided at one end of the connecting housing close to the pre-filter housing, the connecting blocks are fixedly connected to the inner walls of the corresponding mounting slots, the connecting block is provided with two first makeshift slots on one side close to the pre-filter housing, and the connecting block is provided with a second makeshift slot on one side close to the pre-filter housing. Two make way slots, the first make way slot is connected to the second make way slot, the limit block is plugged into the corresponding first make way slot, two L-shaped plug blocks are slidably connected in the second make way slot, the L-shaped plug blocks are symmetrically arranged, sliding slots are provided on both sides of the inner wall of the second make way slot, and the two side walls of the L-shaped plug block are fixedly connected with sliding blocks, and the sliding blocks are slidably connected to the inner walls of the corresponding sliding slots, and the opposite surfaces of the two L-shaped plug blocks are fixedly connected with the same compression spring, the compression spring is located in the second make way slot, and the L-shaped plug block is plugged into the corresponding slot.

[0009] Preferably, the secondary filter assembly includes a fixed frame and a filter element. The fixed frame is located in a connecting shell. The filter element is fixedly connected to the inner wall of the fixed frame. Several blocks are fixedly connected to the air intake shell. One end of the fixed frame close to the air intake pipe is against the block. The blocks are arranged in a circular array. The connecting shell is fixedly connected to the air intake shell, and the connecting shell is communicated with the air intake pipe.

[0010] Preferably, the fire-blocking assembly includes an upper fire-blocking shield and a lower fire-blocking shield, the upper fire-blocking shield is connected to the air shut-off valve, the bottom end of the upper fire-blocking shield is fixedly connected to the upper air intake seat base plate, the lower fire-blocking shield is located below the upper fire-blocking shield, the top of the lower fire-blocking shield is fixedly connected to the lower air intake seat base plate, the bottom end of the lower fire-blocking shield is fixedly connected to the air intake cylinder, and the air intake cylinder is connected to the air intake main pipe, a fire-blocking fence frame is provided between the lower fire-blocking shield and the upper fire-blocking shield, the fire-blocking fence frame is fixedly connected between the upper air intake seat base plate and the lower air intake seat base plate by bolts, and the upper air intake seat base plate and the lower air intake seat base plate are fixedly installed by bolts.

[0011] Preferably, a plurality of fire barrier frames are fixedly connected in the fire barrier frame, the fire barrier sheet is made of a stainless steel plate with a thickness of 1.3 mm and a width of 51 mm, and the distance between two adjacent fire barrier sheets is not greater than 0.5 mm.

[0012] The present invention provides an air intake system for coal mine transportation equipment through improvement. Compared with the prior art, it has the following improvements and advantages:

[0013] 1. The utility model sets a pre-filtering mechanism so that the solid particles in the air will be filtered by the pre-filtering mechanism before entering the filter element, thus preventing the solid particles from clogging the filter element and affecting the filtering effect of the filter element.

[0014] 2. The utility model provides an installation mechanism so that the pre-filtering mechanism can be manually dismantled by personnel for cleaning after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the explosion structure of the air filter component area of ​​the utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the filter cartridge area of ​​the utility model;

[0019] Figure 4 This is a schematic diagram of the dust exhaust pipe area structure of the utility model;

[0020] Figure 5 This is a schematic diagram of the connection housing structure of the utility model;

[0021] Figure 6 This is a schematic diagram of the exploded structure of the connecting block area of ​​the utility model;

[0022] Figure 7 This is a schematic structural diagram of the upper fire-blocking shield of the utility model;

[0023] Figure 8 This is a schematic diagram of the structure of the lower fire-blocking shield of the utility model;

[0024] Figure 9 It is a schematic diagram of the fire barrier frame area structure of the present utility model.

[0025] Description of reference numerals:

[0026] 1. Inlet pipe; 2. Air shut-off valve; 3. Inlet manifold; 4. Inlet housing; 5. Connecting housing; 6. Mounting frame; 7. Filter element; 8. Pre-filter housing; 9. Filter cartridge; 10. Inlet port; 11. Exhaust port; 12. Bevel ring; 13. Connecting pipe; 14. Threaded piece; 15. First bevel dust guide plate; 16. Dust discharge slot; 17. Dust discharge pipe; 18. Second bevel dust guide plate; 19. Stop block ; 20. Slot; 21. Mounting slot; 22. Connecting block; 23. First clearance slot; 24. Second clearance slot; 25. L-shaped plug; 26. Sliding block; 27. Sliding slot; 28. Compression spring; 29. ​​Stop block; 30. Upper fire-blocking shield; 31. Upper air intake seat base; 32. Lower air intake seat base; 33. Lower fire-blocking shield; 34. Air intake cylinder; 35. Fire-blocking fence frame; 36. Fire-blocking fence piece. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention must go beyond these limited embodiments. For some equivalent replacement solutions or common means, they will not be described in detail herein, but they still fall within the scope of protection of this application.

[0028] Figures 1 to 9 This is the best embodiment of the present invention, Figures 1 to 9 The utility model is further described.

[0029] like Figures 1 to 9 As shown, an air intake system for coal mine transportation equipment includes an air filter assembly, an air intake pipe 1, an air shut-off valve 2, a fire arrester assembly, and an air intake main pipe 3, which are connected in sequence. The air filter assembly includes an air intake shell 4, a connecting shell 5, a pre-filter mechanism, an installation mechanism, and a secondary filter mechanism. The pre-filter mechanism is located on the side of the secondary filter mechanism away from the air intake pipe 1. The air filter assembly is used to filter the air entering the air intake pipe 1.

[0030] Furthermore, the pre-filter mechanism includes a pre-filter housing 8, which is located on the side of the connecting housing 5 away from the air inlet housing 4. Several filter cartridges 9 are fixedly connected in the pre-filter housing 8. The circumferential side of the filter cartridge 9 is connected to an air inlet 10, and the circumferential side of the filter cartridge 9 is connected to an exhaust port 11. The inner wall of the filter cartridge 9 is fixedly connected to a bevel ring 12, and the bottom end of the bevel ring 12 is fixedly connected to a connecting pipe 13. The air inlet 10 is connected to the connecting pipe 13, and the circumferential side of the connecting pipe 13 is fixedly connected to a threaded piece 14. The inner wall of the filter cartridge 9 is fixedly connected to a first bevel dust guide plate 15, and the first bevel dust guide plate 15 is located at the connecting Below the tube 13, a dust exhaust groove 16 is opened on the circumferential side of the filter cartridge 9, and the first inclined dust guide plate 15 passes through the dust exhaust groove 16 and extends to the outside. The circumferential sides of several filter cartridges 9 located in the same row are fixedly connected with the same dust exhaust pipe 17, and the dust exhaust pipe 17 is connected to the dust exhaust groove 16. The inner bottom surface of the dust exhaust pipe 17 is fixedly connected with a second inclined dust guide plate 18, and the second inclined dust guide plate 18 is located below the first inclined dust guide plate 15, so that larger solid particle impurities will slide from the dust exhaust groove 16 along the first inclined dust guide plate 15 into the dust exhaust pipe 17, and slide out from both ends of the dust exhaust pipe 17 along the second inclined dust guide plate 18.

[0031] Furthermore, the mounting mechanism includes several groups of limit blocks 19, several mounting grooves 21, and several connecting blocks 22. The limit blocks 19, the mounting grooves 21, and the connecting blocks 22 are all arranged in a ring array. The limit blocks 19 are arranged in pairs. The limit blocks 19 are fixedly connected to the peripheral side of the pre-filter housing 8. The side wall of the limit block 19 is provided with a slot 20. The mounting groove 21 is provided at one end of the connecting housing 5 close to the pre-filter housing 8. The connecting block 22 is fixedly connected to the inner wall of the corresponding mounting groove 21. Two first makeshift grooves 23 are provided on the side of the connecting block 22 close to the pre-filter housing 8. A second makeshift groove 24 is provided on the side of the connecting block 22 close to the pre-filter housing 8. The first makeshift groove 23 is connected to the second makeshift groove 24. The limit block 19 is plugged into the corresponding first makeshift groove 23. Two L-shaped plugs 25 are slidably connected in the second makeshift groove 24. The L-shaped plug blocks 25 are symmetrically arranged, and sliding grooves 27 are provided on both sides of the inner wall of the second make way groove 24. The two side walls of the L-shaped plug block 25 are fixedly connected with sliding blocks 26, and the sliding blocks 26 are slidably connected to the inner walls of the corresponding sliding grooves 27. The opposite surfaces of the two L-shaped plug blocks 25 are fixedly connected with the same compression spring 28, and the compression spring 28 is located in the second make way groove 24. The L-shaped plug block 25 is plugged into the corresponding slot 20, so that after long-term use of the pre-filter mechanism, the personnel will pinch the corresponding two L-shaped plug blocks 25, and the distance between the two L-shaped plug blocks 25 will narrow. The L-shaped plug block 25 squeezes the compression spring 28 and drives the sliding block 26 to slide in the sliding groove 27. At the same time, the L-shaped plug block 25 moves out of the corresponding slot 20, thereby canceling the limit of the limit block 19, and the pre-filter mechanism is dismantled and cleaned.

[0032] Furthermore, the secondary filtration assembly includes a fixed frame 6 and a filter element 7. The fixed frame 6 is located in the connecting shell 5. The filter element 7 is fixedly connected to the inner wall of the fixed frame 6. Several blocks 29 are fixedly connected in the air intake shell 4. The end of the fixed frame 6 close to the air intake pipe 1 is against the block 29. The block 29 is arranged in a ring array. The connecting shell 5 is fixedly connected to the air intake shell 4. The connecting shell 5 is communicated with the air intake pipe 1, so that the air with fine dust entering the filter element 7 will be filtered for the second time by the filter element 7, thereby filtering the fine dust in the filter element 7.

[0033] Furthermore, the fire-blocking assembly includes an upper fire-blocking shield 30 and a lower fire-blocking shield 33. The upper fire-blocking shield 30 is connected to the air shut-off valve 2. The bottom end of the upper fire-blocking shield 30 is fixedly connected to the upper air intake seat base plate 31. The lower fire-blocking shield 33 is located below the upper fire-blocking shield 30. The top of the lower fire-blocking shield 33 is fixedly connected to the lower air intake seat base plate 32. The bottom end of the lower fire-blocking shield 33 is fixedly connected to the air intake cylinder 34. The air intake cylinder 34 is connected to the air intake main pipe 3. A fire-blocking fence frame 35 is provided between the lower fire-blocking shield 33 and the upper fire-blocking shield 30. The fire-blocking fence frame 35 is fixedly connected between the upper air intake seat base plate 31 and the lower air intake seat base plate 32 by bolts. The upper air intake seat base plate 31 and the lower air intake seat base plate 32 are fixedly installed by bolts.

[0034] Furthermore, a plurality of fire barrier sheets 36 are fixedly connected to the fire barrier frame 35. The fire barrier sheets 36 are made of a stainless steel plate with a thickness of 1.3 mm and a width of 51 mm. The distance between two adjacent fire barrier sheets 36 is no more than 0.5 mm.

[0035] Working principle: When the device is in use, solid particle impurities in the air will enter the filter cartridge 9 through the air inlet 10. At this time, the solid particle impurities in the air will pass through the bevel ring 12 and the connecting pipe 13 with the air to reach the bottom of the filter cartridge 9. At this time, the larger solid particle impurities will slide from the dust exhaust groove 16 along the first bevel dust guide plate 15 to the dust exhaust pipe 17, and slide out from the two ends of the dust exhaust pipe 17 along the second bevel dust guide plate 18. At this time, the air with fine dust enters the filter element 7 from the exhaust port 11 along the threaded sheet 14, and is filtered for the second time by the filter element 7, so that the fine dust is filtered in the filter element 7. The filtered dust enters the intake pipe 1, the air shut-off valve 2, the flame arrester assembly, and the intake manifold 3 from the intake housing 4 in sequence. When personnel need to disassemble and clean the pre-filter mechanism, they pinch the corresponding two L-shaped plugs 25 together to narrow the distance between the two L-shaped plugs 25. At this time, the L-shaped plug 25 squeezes the compression spring 28 and drives the sliding block 26 to slide in the sliding groove 27. At the same time, the L-shaped plug 25 moves out of the corresponding slot 20, thereby canceling the limit of the limit block 19. When the limits between several slots 20 are canceled, the personnel can pull the pre-filter housing 8 outward to remove the pre-filter housing 8 to clean the pre-filter mechanism. At this time, the personnel can move the fixed frame 6 outward to remove the fixed frame 6 to replace the filter element 7.

[0036] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation thereto. Any person skilled in the art may utilize the above disclosure to modify or remodel the present invention into equivalent embodiments. However, any simple modification, equivalent variation, or modification of the above embodiment that does not depart from the technical content of the present invention and is based on the technical essence of the present invention shall still fall within the scope of protection of the present invention.

Claims

1. An air intake system for coal mine transportation equipment, comprising an air filter assembly, an air intake pipe (1), an air shut-off valve (2), a flame arrester assembly, and an air intake manifold (3) connected in sequence, characterized in that: The air filter assembly comprises an air intake housing (4), a connecting housing (5), a pre-filtering mechanism, a mounting mechanism, and a secondary filtering mechanism, wherein the pre-filtering mechanism is located on a side of the secondary filtering mechanism away from the air intake pipe (1), and the air filter assembly is used to filter the air entering the air intake pipe (1); The pre-filter mechanism comprises a pre-filter housing (8), the pre-filter housing (8) being located on a side of the connecting housing (5) away from the air inlet housing (4), a plurality of filter cartridges (9) being fixedly connected in the pre-filter housing (8), an air inlet (10) being provided on the peripheral side of the filter cartridge (9), an air outlet (11) being provided on the peripheral side of the filter cartridge (9), an inner wall of the filter cartridge (9) being fixedly connected to a bevel ring (12), a bottom end of the bevel ring (12) being fixedly connected to a connecting pipe (13), the air inlet (10) being communicated with the connecting pipe (13), a threaded piece (14) being fixedly connected to the peripheral side of the connecting pipe (13), and the air inlet (10) being communicated with the connecting pipe (13). The inner wall of the filter cartridge (9) is fixedly connected to a first inclined dust guide plate (15), the first inclined dust guide plate (15) is located below the connecting pipe (13), a dust discharge groove (16) is provided on the peripheral side of the filter cartridge (9), the first inclined dust guide plate (15) penetrates the dust discharge groove (16) and extends to the outside, a plurality of filter cartridges (9) located in the same row are fixedly connected to the same dust discharge pipe (17) on the peripheral side, the dust discharge pipe (17) is connected to the dust discharge groove (16), the inner bottom surface of the dust discharge pipe (17) is fixedly connected to a second inclined dust guide plate (18), the second inclined dust guide plate (18) is located below the first inclined dust guide plate (15).

2. The air intake system for coal mine transportation equipment according to claim 1, characterized in that: The mounting mechanism comprises a plurality of groups of limit blocks (19), a plurality of mounting grooves (21), and a plurality of connecting blocks (22). The limit blocks (19), the mounting grooves (21), and the connecting blocks (22) are all arranged in a ring array. The limit blocks (19) are arranged in pairs. The limit blocks (19) are fixedly connected to the peripheral side of the pre-filter housing (8). A slot (20) is provided on the side wall of the limit block (19). The mounting groove (21) is provided at one end of the connecting housing (5) close to the pre-filter housing (8). The connecting block (22) is fixedly connected to the inner wall of the corresponding mounting groove (21). Two first clearance grooves (23) are provided on one side of the connecting block (22) close to the pre-filter housing (8). A second clearance groove (23) is provided on one side of the connecting block (22) close to the pre-filter housing (8). The first giving way groove (23) is connected to the second giving way groove (24), the limiting block (19) is plugged into the corresponding first giving way groove (23), and two L-shaped plug blocks (25) are slidably connected in the second giving way groove (24). The L-shaped plug blocks (25) are symmetrically arranged, and sliding grooves (27) are provided on both sides of the inner wall of the second giving way groove (24). The two side walls of the L-shaped plug block (25) are fixedly connected with sliding blocks (26), and the sliding blocks (26) are slidably connected to the inner wall of the corresponding sliding groove (27). The opposite surfaces of the two L-shaped plug blocks (25) are fixedly connected with the same compression spring (28), and the compression spring (28) is located in the second giving way groove (24). The L-shaped plug block (25) is plugged into the corresponding slot (20).

3. The air intake system for coal mine transportation equipment according to claim 1, characterized in that: The fire-blocking assembly comprises an upper fire-blocking shield (30) and a lower fire-blocking shield (33). The upper fire-blocking shield (30) is connected to the air shut-off valve (2). The bottom end of the upper fire-blocking shield (30) is fixedly connected to the upper air intake seat bottom plate (31). The lower fire-blocking shield (33) is located below the upper fire-blocking shield (30). The top end of the lower fire-blocking shield (33) is fixedly connected to the lower air intake seat bottom plate (32). An air intake cylinder (34) is fixedly connected to the bottom end, and the air intake cylinder (34) is communicated with the air intake main pipe (3). A fire barrier frame (35) is provided between the lower fire barrier shield (33) and the upper fire barrier shield (30). The fire barrier frame (35) is fixedly connected between the upper air intake seat bottom plate (31) and the lower air intake seat bottom plate (32) by bolts. The upper air intake seat bottom plate (31) and the lower air intake seat bottom plate (32) are fixedly installed by bolts.

4. The air intake system for coal mine transportation equipment according to claim 3, characterized in that: A plurality of fire barrier sheets (36) are fixedly connected to the fire barrier frame (35). The fire barrier sheets (36) are made of a stainless steel plate with a thickness of 1.3 mm and a width of 51 mm. The distance between two adjacent fire barrier sheets (36) is not greater than 0.5 mm.

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