Mining explosion-proof and intrinsic safety type permanent magnet synchronous frequency conversion and speed regulation integrated electric roller

Abstract

The utility model discloses a mining explosion-proof and intrinsic safety type permanent magnet synchronous frequency conversion and speed regulation integrated electric roller which comprises an explosion-proof box, an electric roller body is arranged in the explosion-proof box, a frequency converter explosion-proof box is arranged on one side of the explosion-proof box, a liquid storage box is installed on a supporting plate, a fixing supporting plate is installed in the explosion-proof box, and a motor is installed on the fixing supporting plate. The fixed supporting plate is located on one side of the electric roller body, a plurality of nozzles are installed on the fixed supporting plate, communicating pipes are communicated among the nozzles, a water supply pipe is communicated with one side of the liquid storage box, a pump body is arranged on the water supply pipe, a recycling box is installed in the anti-explosion box, and limiting blocks are installed at the four corners of the inner wall of the recycling box. And a filter screen plate is arranged in the recycling box. The electric roller cooling device has the advantages that the electric roller body and the conveying belt can be cooled at the same time, the cooling effect is improved, the high-temperature explosion danger is avoided, safety is improved, sprayed cooling liquid can be recycled after being filtered and can be recycled, and waste is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric roller technical field, concretely is a mine explosion -proof and intrinsic safety type permanent magnet synchronous frequency conversion speed regulation integrated electric roller. BACKGROUND

[0002] Permanent magnet electric roller has low speed, torque big characteristics, is used to the direct drive belt of belt conveyor, reaches the purpose of conveying material. The traditional permanent magnet electric roller and frequency converter are designed separately, and the volume is large, the transmission distance is far, and the frequency converter can cause electromagnetic interference to other equipment.

[0003] The utility model discloses a mine explosion -proof and intrinsic safety type permanent magnet synchronous frequency conversion speed regulation integrated electric roller. Through the connection relationship between the shaft, the permanent magnet roller explosion -proof connection transition cavity, the frequency converter explosion -proof connection transition cavity, the frequency converter explosion -proof main cavity, the explosion -proof wiring terminal and each other, the frequency converter and permanent magnet electric roller are combined, designed as a whole, greatly shorten the transmission distance of frequency converter and permanent magnet electric roller, reduce the equipment volume, reduce the occupied space, greatly reduce the risk of explosion pressure and make the shell deformation lead to the explosion.

[0004] The above device combines the frequency converter and the permanent magnet electric roller, reduces the equipment volume, reduces the occupied space, and the electric roller is used to convey the conveyor belt in the mine.

[0005] It should be noted that the above content belongs to the technical cognition of the inventor and does not necessarily constitute prior art. UTILITY MODEL CONTENT

[0006] The utility model discloses a mine explosion -proof and intrinsic safety type permanent magnet synchronous frequency conversion speed regulation integrated electric roller.

[0007] To achieve the above object, the utility model adopts the following technical scheme:

[0008] The utility model provides a mine explosion -proof and intrinsic safety type permanent magnet synchronous variable frequency speed regulation integrated electric roller, including the explosion -proof box, the inside of explosion -proof box is equipped with electric roller main part, one side of explosion -proof box is equipped with frequency converter explosion -proof box, the other side of explosion -proof box is installed with support plate, install the liquid storage tank on support plate, install fixed support plate in the explosion -proof box, fixed support plate is located electric roller main part one side, install a plurality of spray heads on fixed support plate, the intercommunication pipe is intercommunicated between a plurality of spray heads, the water supply pipe is intercommunicated with the one side of liquid storage tank, the water supply pipe is communicated with spray head away from the one end of liquid storage tank, be equipped with the pump body on the water supply pipe, install recovery tank in the explosion -proof box, recovery tank is located electric roller main part and fixed support plate below, install the limit block at the four corners of recovery tank inner wall, be equipped with filter screen in recovery tank, filter screen is located the above limit block.

[0009] Further, the transition chamber is communicated with one side of the frequency converter explosion -proof box, one end of the machine shaft of the electric roller main body is located in the transition chamber, and the frequency converter is placed in the frequency converter explosion -proof box. The connecting line on the frequency converter is connected with the machine shaft of the electric roller main body.

[0010] Further, two vertical through grooves are arranged on the fixed support plate, and guide sliding rods are slidably connected in the two vertical through grooves. The top end of the guide sliding rod is provided with a limiting disc, and the bottom end of the guide sliding rod is provided with a fixed bottom plate. Two inclined scrapers are arranged on the bottom of the fixed bottom plate. A telescopic spring is sleeved on the guide sliding rod. One end of the telescopic spring is fixedly connected with the fixed bottom plate, and the other end of the telescopic spring is fixedly connected with the fixed support plate.

[0011] Further, a first liquid level sensor is arranged in the liquid storage tank, a second liquid level sensor is arranged in the recovery tank, and a circulating pipe is connected between the recovery tank and the liquid storage tank. The circulating pump is arranged on the circulating pipe.

[0012] Further, a filling port is arranged on one side of the top of the liquid storage tank, and a sealing plug is movably connected on the filling port.

[0013] Further, an electromagnetic valve is arranged on the end of the circulating pipe close to the liquid storage tank.

[0014] Compared with the prior art, the technical scheme has the following beneficial effects:

[0015] The cooling liquid is sprayed through the plurality of spray heads to cool the electric roller main body, and the cooling liquid falls on the conveying belt to cool the conveying belt, thereby improving the cooling effect, reducing the wear of the conveying belt, prolonging the service life, avoiding high-temperature explosion hazards, and improving the safety.

[0016] The cooling liquid on the conveying belt is scraped off by two oblique scrapers, and impurities on the conveying belt can be scraped off, the sprayed cooling liquid falls into the recycling box, the cooling liquid is filtered through the filter screen plate, the impurities in the cooling liquid are blocked, the filtering effect is improved, the pipeline is prevented from being blocked by impurities, the cooling liquid can be recycled and used, and waste is avoided.

[0017] The frequency converter and the electric roller body are combined and designed as a whole, so that the belt conveyor can run for a long time and brake safely in the coal mine explosion-proof environment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A structure diagram of the mine explosion-proof and intrinsic safety type permanent magnet synchronous frequency conversion speed regulation integrated electric roller is shown.

[0019] Figure 2 An enlarged sectional view of the side of the explosion-proof box.

[0020] Figure 3 A top view of the explosion-proof box.

[0021] Figure 4 An enlarged sectional view of the fixed support plate.

[0022] Figure 5 An enlarged sectional view of the liquid storage tank.

[0023] In the drawings: 1, explosion-proof box; 2, electric roller body; 3, frequency converter explosion-proof box; 4, support plate; 5, liquid storage tank; 6, fixed support plate; 7, spray head; 8, communication pipe; 9, water supply pipe; 10, pump body; 11, recycling box; 12, limiting block; 13, filter screen plate; 14, transition chamber; 15, frequency converter; 16, vertical through slot; 17, guide slide rod; 18, limiting disc; 19, fixed bottom plate; 20, oblique scraper; 21, extension spring; 22, first liquid level sensor; 23, second liquid level sensor; 24, circulating pipe; 25, circulating pump; 26, filling port; 27, sealing plug; 28, electromagnetic valve. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely explained in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] In the description of the utility model, it is understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, in the description of the utility model, "a plurality of" means two or more, unless otherwise specifically limited.

[0026] The utility model provides a kind of mine explosion-proof and intrinsic safety type permanent magnet synchronous variable frequency speed regulation integrated electric roller as shown in Figures 1-5 As shown in a kind of mine explosion-proof and intrinsic safety type permanent magnet synchronous variable frequency speed regulation integrated electric roller, including explosion-proof box 1, electric roller main body 2 is equipped in explosion-proof box 1 inside, frequency converter explosion-proof box 3 is equipped in one side of explosion-proof box 1, support plate 4 is installed on the other side of explosion-proof box 1, liquid storage tank 5 is installed on support plate 4, fixed support plate 6 is installed in explosion-proof box 1, fixed support plate 6 is located in electric roller main body 2 side, multiple spray heads 7 are installed on fixed support plate 6, multiple spray heads 7 are communicated with communication pipe 8, water supply pipe 9 is communicated with one side of liquid storage tank 5, one end of water supply pipe 9 away from liquid storage tank 5 is communicated with spray head 7, pump body 10 is equipped on water supply pipe 9, recovery tank 11 is installed in explosion-proof box 1, recovery tank 11 is located below electric roller main body 2 and fixed support plate 6, limit block 12 is installed at the four corners of the inner wall of recovery tank 11, filter screen plate 13 is equipped in recovery tank 11, filter screen plate 13 is located above limit block 12.

[0027] When needing to reduce temperature, pump body 10 starts to work, cooling liquid in liquid storage tank 5 is transported into spray head 7 through water supply pipe 9, multiple spray heads 7 are communicated with communication pipe 8, cooling liquid can be transported into multiple spray heads 7 through communication pipe 8, spray head 7 sprays cooling liquid on electric roller main body 2, and electric roller main body 2 is cooled down, and cooling liquid falls on conveying belt at the same time, and conveying belt can be cooled down at the same time, cooling effect is improved, abrasion of conveying belt is reduced, service life is improved, high-temperature explosion danger is avoided, safety is improved, sprayed cooling liquid falls into recovery tank 11, cooling liquid is filtered through filter screen plate 13, impurities in cooling liquid are blocked, filtering effect is improved, and impurities are prevented from blocking pipeline, and cooling liquid can be recycled and used, to avoid waste.

[0028] Refer to the description of the drawings Figure 1 And the description of the drawings Figure 3 Transition cavity 14 is communicated with one side of frequency converter explosion-proof box 3, one end of the machine shaft of electric roller main body 2 is located in transition cavity 14, frequency converter 15 is placed in frequency converter explosion-proof box 3, and the connecting wire on frequency converter 15 is connected with the machine shaft of electric roller main body 2.

[0029] The frequency converter 15 is combined with the motorized drum body 2 to realize long-time operation and safe braking of the belt conveyor in the coal mine explosion-proof environment.

[0030] Referring to the description of the accompanying drawings Figure 1 , the accompanying drawings of the description Figure 2 and the accompanying drawings of the description Figure 4 , the fixed support plate 6 is provided with two vertical through grooves 16, and the two vertical through grooves 16 are slidably connected with guide sliding rods 17. The top end of the guide sliding rod 17 is provided with a limiting disc 18, and the bottom end of the guide sliding rod 17 is provided with a fixed bottom plate 19. The bottom of the fixed bottom plate 19 is provided with two inclined scrapers 20. The guide sliding rod 17 is sleeved with an extension spring 21. One end of the extension spring 21 is fixedly connected with the fixed bottom plate 19, and the other end of the extension spring 21 is fixedly connected with the fixed support plate 6.

[0031] The bottom end of the inclined scraper 20 is at the same horizontal plane as the bottom of the motorized drum body 2. The inclined scraper 20 is in contact with the conveying belt. The guide sliding rod 17 can slide up and down along the vertical through groove 16. The limiting disc 18 limits the guide sliding rod 17 to avoid falling out of the vertical through groove 16. The extension spring 21 exerts a downward force on the fixed bottom plate 19, so that the two inclined scrapers 20 are in contact with the conveying belt. The two inclined scrapers 20 can scrape the cooling liquid on the conveying belt, and can also scrape the impurities on the conveying belt.

[0032] Referring to the description of the accompanying drawings Figure 1 , the accompanying drawings of the description Figure 3 and the accompanying drawings of the description Figure 5 , the first liquid level sensor 22 is installed in the liquid storage tank 5, the second liquid level sensor 23 is installed in the recovery tank 11, and the circulation pipe 24 is connected between the recovery tank 11 and the liquid storage tank 5. The circulation pump 25 is provided on the circulation pipe 24.

[0033] The first liquid level sensor 22 detects the liquid level in the liquid storage tank 5, and the second liquid level sensor 23 detects the liquid level in the recovery tank 11. When the second liquid level sensor 23 detects that the liquid level exceeds the set value, and the liquid level in the first liquid level sensor 22 is low, the circulation pump 25 starts to work. The cooling liquid in the recovery tank 11 is transported to the liquid storage tank 5 through the circulation pipe 24, and the cooling liquid can be recycled.

[0034] Referring to the description of the accompanying drawings Figure 5 , the top side of the liquid storage tank 5 is provided with a filling port 26, and the filling port 26 is movably connected with a sealing plug 27.

[0035] When the cooling liquid in the liquid storage tank 5 is reduced, the sealing plug 27 is removed from the filling port 26, and the cooling liquid is added to the liquid storage tank 5 through the filling port 26.

[0036] Referring to the description of the accompanying drawingsFigure 1 and the accompanying drawings Figure 5 The electromagnetic valve 28 is installed on one end of the circulating pipe 24 close to the liquid storage tank 5.

[0037] The electromagnetic valve 28 and the circulating pump 25 work simultaneously, when the circulating pump 25 works, the electromagnetic valve 28 is opened, when the circulating pump 25 stops working, the electromagnetic valve 28 is closed, avoiding the cooling liquid in the liquid storage tank 5 from flowing into the recovery tank 11 through the circulating pipe 24.

[0038] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A mine explosion-proof and intrinsically safe permanent magnet synchronous variable frequency speed regulation integrated electric roller, comprising an explosion-proof box (1), an electric roller main body (2) is arranged in the explosion-proof box (1), a frequency converter explosion-proof box (3) is arranged on one side of the explosion-proof box (1), characterized in that, The explosion-proof box (1) is provided with a support plate (4) on the other side, a liquid storage tank (5) is installed on the support plate (4), a fixed support plate (6) is installed in the explosion-proof box (1), the fixed support plate (6) is located on one side of the electric roller body (2), a plurality of spray heads (7) are installed on the fixed support plate (6), a plurality of communication pipes (8) are communicated between the spray heads (7), a water supply pipe (9) is communicated on one side of the liquid storage tank (5), one end of the water supply pipe (9) away from the liquid storage tank (5) is communicated with the spray head (7), a pump body (10) is arranged on the water supply pipe (9), a recovery tank (11) is installed in the explosion-proof box (1), the recovery tank (11) is located below the electric roller body (2) and the fixed support plate (6), limit blocks (12) are installed at the four corners of the inner wall of the recovery tank (11), a filter screen (13) is arranged in the recovery tank (11), and the filter screen (13) is located above the limit block (12).

2. The explosion-proof and intrinsically safe permanent magnet synchronous variable frequency speed regulation integrated electric roller for mine according to claim 1, characterized in that, The variable frequency converter explosion-proof box (3) is communicated with a transition cavity (14) on one side, one end of the shaft of the electric roller body (2) is located in the transition cavity (14), and a variable frequency converter (15) is placed in the variable frequency converter explosion-proof box (3). The connecting line on the variable frequency converter (15) is connected with the shaft of the electric roller body (2).

3. The mine explosion-proof and intrinsically safe type permanent magnet synchronous variable frequency speed regulation integrated electric roller according to claim 1, characterized in that, Two vertical through grooves (16) are arranged on the fixed support plate (6), guide sliding rods (17) are slidably connected in the vertical through grooves (16), limit discs (18) are installed at the top ends of the guide sliding rods (17), fixed bottom plates (19) are installed at the bottom ends of the guide sliding rods (17), two inclined scrapers (20) are installed at the bottom of the fixed bottom plate (19), telescopic springs (21) are sleeved on the guide sliding rods (17), one end of the telescopic spring (21) is fixedly connected with the fixed bottom plate (19), and the other end of the telescopic spring (21) is fixedly connected with the fixed support plate (6).

4. The explosion-proof and intrinsically safe permanent magnet synchronous variable frequency speed regulation integrated electric roller according to claim 1, characterized in that, A first liquid level sensor (22) is installed in the liquid storage tank (5), a second liquid level sensor (23) is installed in the recovery tank (11), and a circulating pipe (24) is connected between the recovery tank (11) and the liquid storage tank (5). The circulating pipe (24) is provided with a circulating pump (25).

5. The explosion-proof and intrinsically safe permanent magnet synchronous variable frequency speed regulation integrated electric roller according to claim 1, characterized in that, A filling port (26) is arranged on one side of the top of the liquid storage tank (5), and a sealing plug (27) is movably connected to the filling port (26).

6. The explosion-proof and intrinsically safe permanent magnet synchronous variable frequency speed regulation integrated electric roller according to claim 4, characterized in that, An electromagnetic valve (28) is installed on one end of the circulating pipe (24) close to the liquid storage tank (5).

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