Low-noise air preheater speed reducer mechanical device

Abstract

The utility model relates to the technical field of speed reducers, and discloses a low-noise air preheater speed reducer mechanical device which comprises a base, a lower shell fixed at the top of the base and an upper shell bolted above the lower shell, and further comprises a speed reducer gear set movably connected in the lower shell and the upper shell, an oil storage box is fixed to the left side of the top of the upper shell. The gear has an automatic lubricating function and can ensure that a proper amount of lubricating oil is always kept on the surfaces of the gears, so that friction and abrasion between the gears are effectively reduced, noise generated by friction is reduced, the noise reduction effect not only improves quietness of equipment operation, but also helps to improve the working environment and reduce the influence of noise on workers, and the service life of the equipment is prolonged. The lubricating film formed by the lubricating oil on the surface of the gear can reduce frictional resistance, so that the gear rotates more smoothly, the transmission efficiency is improved, the overall performance of the air preheater is improved, smoke heat can be recycled more efficiently, and the boiler efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a speed reducer technical field, concretely is a low noise air preheater speed reducer mechanical device. BACKGROUND

[0002] Air preheater is the tail flue of boiler passes through the inside heat sink and preheats the air before entering the boiler to certain temperature equipment, because the air temperature that wants to guarantee entering the boiler cannot have big change, the main role of air preheater speed reducer is to reduce the rotation speed of main motor to satisfy the low speed operation demand of air preheater rotor, through speed reducer, can ensure that air preheater is stable operation under very low speed, thereby improves the efficiency and combustion efficiency of boiler.

[0003] With the development of industry and the improvement of demand, the transmission error and noise control of speed reducer are more and more strict, in order to meet the environmental noise requirement, protect the surrounding environment and people's health, it is necessary to install the noise reduction structure, the noise reduction structure on the existing air preheater speed reducer is mostly through cutting off the sound wave propagation path to realize noise reduction, although this way can reduce the propagation of noise to a certain extent, but it cannot fundamentally solve the problem of noise, especially when the gear in the speed reducer wears or loosens due to long time operation, the gap increases, the noise problem will be more prominent, the gear in the speed reducer may wear or loosen due to friction and uneven stress after long time operation, which not only leads to the increase of gear gap and noise, but also affects the transmission efficiency and stability of the speed reducer. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a low noise air preheater speed reducer mechanical device to solve the problems in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a low noise air preheater speed reducer mechanical device, which comprises a base, a lower shell fixed on the top of the base and an upper shell bolted above the lower shell, and further comprises:

[0006] A speed reducer gear set movably connected inside the lower shell and the upper shell, a lubricating oil storage box is fixed to the left side of the top of the upper shell, the inside of the lubricating oil storage box is filled with lubricating oil, a micro water pump is communicated with the left side of the lubricating oil storage box, a connecting hose is communicated with the top of the micro water pump, a rodless cylinder is bolted to the left side of the upper shell, and a position adjusting structure is arranged above the rodless cylinder.

[0007] An oil discharge pipe is arranged above the inside of the upper shell, and a plurality of spray heads are communicated below the oil discharge pipe.

[0008] Preferably, the lower shell and the interior of the upper shell are embedded with noise reduction interlayers, and the noise reduction interlayers are soundproof felt.

[0009] Preferably, the position adjusting structure comprises a fixed plate, a fixed frame, a first gear and a rack plate, the fixed plate is fixed above the left surface of the upper shell, the fixed frame is fixed on the left side of the fixed plate, the first gear is arranged in the interior of the fixed frame, and the rack plate is fixed on the surface of the rodless cylinder moving piece and engaged with the first gear.

[0010] Preferably, the right end of the oil discharge pipe is rotatably connected with the inner wall of the upper shell, the left end of the oil discharge pipe penetrates through the fixed plate and the fixed frame and is connected in communication with the connecting hose, the oil discharge pipe is rotatably connected with the fixed plate and the fixed frame, and the oil discharge pipe penetrates through the first gear and is fixedly connected with the first gear.

[0011] Preferably, a collecting box is arranged through the lower left side of the lower shell, the width of the collecting box is the same as the width of the inner wall of the lower shell, and a pull rod is fixed to the left side of the collecting box.

[0012] Preferably, a bolt is fixed to the front and rear of the left side of the lower shell, a positioning block is fixed below the bolt, and the positioning block is slidably connected with the surface of the collecting box.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The utility model discloses a automatic lubrication function can ensure that the gear surface always keeps the lubricating oil of proper amount, thereby effectively reducing the friction and abrasion between the gear, reduce the noise produced because of friction, this noise reduction effect not only promotes the quietness of equipment operation, also helps to improve the working environment, reduce the influence of noise to the staff, the lubricating film formed by lubricating oil on the gear surface can reduce the friction resistance, make the gear rotation more smooth, thereby improve transmission efficiency, this helps to improve the overall performance of air preheater, makes it more efficient recovery of flue gas heat, improves the boiler efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0016] Figure 2 It is the sectional view of the upper shell in the utility model;

[0017] Figure 3 It is the three-dimensional schematic diagram of the position adjusting structure in the utility model;

[0018] Figure 4 It is the three-dimensional schematic diagram of the collecting box after being drawn out in the utility model;

[0019] Figure 5Part structure section view of upper shell of the utility model.

[0020] In the figure: 1, base; 2, lower shell; 3, upper shell; 4, speed reducer gear set; 5, oil storage box; 6, micro water pump; 7, connecting hose; 8, rodless cylinder; 9, position adjusting structure; 91, fixed plate; 92, fixed frame; 93, first gear; 94, rack plate; 10, oil discharge pipe; 11, spray head; 12, noise reduction interlayer; 13, collection box; 14, pull rod; 15, bolt; 16, positioning block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figures 1-5 As shown in the figure, a low-noise air preheater speed reducer mechanical device, including base 1, the top of base 1 is fixed with lower shell 2, the upper side of lower shell 2 is hinged with upper shell 3, the inside of lower shell 2 and upper shell 3 is movably connected with speed reducer gear set 4, the left side of the top of upper shell 3 is fixed with oil storage box 5, and the inside of oil storage box 5 is filled with lubricating oil, the left side of oil storage box 5 is communicated with micro water pump 6, and the top of micro water pump 6 is communicated with connecting hose 7, the left side of upper shell 3 is hinged with rodless cylinder 8, the upper side of rodless cylinder 8 is provided with position adjusting structure 9, the inside of upper shell 3 is provided with oil discharge pipe 10, and the lower side of oil discharge pipe 10 is communicated with multiple spray heads 11.

[0023] The inside of lower shell 2 and upper shell 3 is embedded with noise reduction interlayer 12, and the noise reduction interlayer 12 is soundproof felt, when the air preheater speed reducer is running, the noise generated in the inside of upper shell 3 and lower shell 2 can be effectively reduced through noise reduction interlayer 12, effectively improving the noise reduction effect of the air preheater speed reducer.

[0024] The position adjusting structure 9 comprises a fixed plate 91, a fixed frame 92, a first gear 93 and a rack plate 94, the fixed plate 91 is fixed above the left side surface of the upper shell 3, the fixed frame 92 is fixed on the left side of the fixed plate 91, the first gear 93 is arranged in the interior of the fixed frame 92, the rack plate 94 is fixed on the surface of the moving part of the rodless cylinder 8, and the rack plate 94 is engaged with the first gear 93, the right end of the oil discharge pipe 10 is rotatably connected with the inner wall of the upper shell 3, the left end of the oil discharge pipe 10 penetrates through the fixed plate 91 and the fixed frame 92 and is connected with the connecting hose 7 in communication, the oil discharge pipe 10 is rotatably connected with the fixed plate 91 and the fixed frame 92, the oil discharge pipe 10 penetrates through the first gear 93 and is fixedly connected with the first gear 93, when the micro water pump 6 pumps the lubricating oil in the oil storage box 5 into the interior of the connecting hose 7, the connecting hose 7 injects the lubricating oil into the interior of the oil discharge pipe 10 and discharges through the spray head 11, the lubricating treatment is carried out on the reduction gear set 4 below, at this time, the rodless cylinder 8 is opened, so that the moving part above the rodless cylinder 8 reciprocates forward and backward, the rack plate 94 is activated to make the first gear 93 reciprocate, the oil discharge pipe 10 drives the spray head 11 to swing forward and backward, so that the spray head 11 uniformly sprays the lubricating oil on the surface of the reduction gear set 4, thereby keeping the quiet operation of the air preheater reduction machine.

[0025] A collecting box 13 is arranged through the lower left side of the lower shell 2, and the width of the collecting box 13 is the same as the width of the inner wall of the lower shell 2, a pull rod 14 is fixed on the left side of the collecting box 13, a bolt 15 is fixed on the front and back of the left side of the lower shell 2, and a positioning block 16 is fixed below the bolt 15 and is in sliding connection with the surface of the collecting box 13, when the spray head 11 discharges the lubricating oil, part of the lubricating oil is sprayed on the surface of the reduction gear set 4, and the collecting box 13 below collects and stores the lubricating oil which is not sprayed on the surface of the reduction gear set 4, so as to be uniformly collected by the staff later, preventing waste, the staff pulls the two bolts 15, so that the positioning block 16 moves away from the surface of the collecting box 13, then the staff can pull out the collecting box 13 to process the lubricating oil in the collecting box 13.

[0026] Working principle: when the air preheater speed reducer runs for a period of time, the micro water pump 6 above the upper shell 3 will be started, and then the lubricating oil in the oil storage box 5 is pumped into the inside of the connecting hose 7, the connecting hose 7 discharges the lubricating oil into the inside of the oil discharge pipe 10, at the same time the lower rodless cylinder 8 is opened, the moving part on the surface of the rodless cylinder 8 moves back and forth, and then the first gear 93 drives the oil discharge pipe 10 to swing back and forth, so that the nozzle 11 sprays the lubricating oil on the surface of the lower speed reducer gear set 4, and the lubricating oil forms a protective film on the surface of the gear, which reduces the direct metal contact between the gears, thereby reducing the friction and impact sound, the lubricating layer not only can reduce the friction, but also can absorb and relieve the micro vibration caused by the gear meshing, so that the speed reducer runs more smoothly, through lubrication to achieve the purpose of noise reduction, the staff can also take out the collecting box 13 from the lower shell 2, and then recycle the excess lubricating oil, avoid waste.

[0027] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A low-noise air preheater reducer mechanical device, comprising a base (1), a lower shell (2) fixed on the top of the base (1), and an upper shell (3) bolted above the lower shell (2), characterized in that, Also include: The reduction gear set (4) is movably connected inside the lower shell (2) and the upper shell (3), the left side of the top of the upper shell (3) is fixed with the oil storage box (5), the inside of the oil storage box (5) is filled with lubricating oil, the left side of the oil storage box (5) is communicated with the micro water pump (6), the top of the micro water pump (6) is communicated with the connecting hose (7), the left side of the upper shell (3) is hinged with the rodless cylinder (8), the upper side of the rodless cylinder (8) is provided with the positioning structure (9); The oil discharge pipe (10) is arranged inside the upper shell (3), and the lower side of the oil discharge pipe (10) is communicated with a plurality of spray heads (11).

2. A low noise APG reducer mechanical device according to claim 1, characterized in that: The inside of the lower shell (2) and the upper shell (3) is embedded with a noise reduction sandwich (12), and the noise reduction sandwich (12) is soundproof felt.

3. A low noise APG speed reducer mechanical device according to claim 1, characterized in that: The positioning structure (9) includes a fixed plate (91), a fixed frame (92), a first gear (93) and a rack plate (94), the fixed plate (91) is fixed above the left side surface of the upper shell (3), the fixed frame (92) is fixed on the left side of the fixed plate (91), the first gear (93) is arranged inside the fixed frame (92), the rack plate (94) is fixed on the surface of the moving part of the rodless cylinder (8), and the rack plate (94) is engaged with the first gear (93).

4. A low noise APG reducer mechanical device according to claim 3, characterized in that: The right end of the oil discharge pipe (10) is rotatably connected with the inner wall of the upper shell (3), the left end of the oil discharge pipe (10) penetrates the fixed plate (91) and the fixed frame (92) and is communicated with the connecting hose (7), the oil discharge pipe (10) is rotatably connected with the fixed plate (91) and the fixed frame (92), the oil discharge pipe (10) penetrates the first gear (93) and is fixedly connected with the first gear (93).

5. A low noise APG speed reducer mechanical device according to claim 1, characterized in that: The lower side of the left side of the lower shell (2) is provided with a collecting box (13), and the width of the collecting box (13) is the same as the width of the inner wall of the lower shell (2), the left side of the collecting box (13) is fixed with a pull rod (14).

6. A low noise APG reducer mechanical device according to claim 5, characterized in that: The front and rear of the left side of the lower shell (2) are fixed with a bolt (15), and the lower side of the bolt (15) is fixed with a positioning block (16), the positioning block (16) is slidably connected with the surface of the collecting box (13).

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