Fan structure

Abstract

The utility model belongs to the field of fan equipment, particularly relates to a fan structure, and solves the problem of low transmission efficiency. The fan structure comprises a machine frame, a main shaft is rotationally connected to the machine frame, blades are arranged on the main shaft, and the main shaft is fixedly connected with a driving shaft of a driving motor and rotates synchronously. The effects of high transmission efficiency and high transmission stability are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fan equipment field, especially relate to a fan structure. BACKGROUND

[0002] The fan is a kind of equipment for realizing high-speed wind flow output, is widely used in a variety of industrial scenes, and it is mainly driven by driver to realize the rotation of blade to realize the generation of wind flow.

[0003] At present, in prior art, the transmission of most fan structures is realized by belt, belt transmission is difficult to be used in the application scene of larger torque, and the transmission efficiency is lower, needs timely maintenance, increases cost. INNOVATION CONTENT

[0004] The utility model aims at the above-mentioned problems existing in prior art, and provides a fan structure.

[0005] In order to realize the purpose of the utility model, the following technical schemes can be used:

[0006] A fan structure, including rack, the rack is rotatably connected with main shaft, the main shaft is provided with blade, the main shaft is fixedly connected with the driving shaft of driving motor and rotates synchronously.

[0007] The fan structure of the utility model mainly comprises main shaft, blade and driving motor, the driving motor drives the rotation of the main shaft to realize the rotation of the blade to generate wind flow effect, the rack can guide and collect the wind flow, in particular, the main shaft and the driving shaft of the driving motor are directly connected, that is, equivalent to shaft connection transmission, which simplifies the structure and has higher transmission efficiency, compared with the belt transmission mode, the maintenance and replacement cost of the belt is also reduced.

[0008] In the above-mentioned fan structure, the driving shaft and the main shaft are coaxially arranged and connected through a shaft coupling assembly.

[0009] The driving shaft and the main shaft are connected by a shaft coupling, which ensures the synchronous rotation of the two and has flexible detachability and convenient disassembly and assembly.

[0010] As optimization, the driving motor can be based on Y series motor with frame number Y315, Y280, Y250, Y225, Y200, Y180, Y160 or Y132, and the length is reduced by 40-50%, so that it can be applied to smaller installation space and improve compatibility.

[0011] In the above-mentioned fan structure, the shaft coupling assembly comprises T-shaped flange diaphragms detachably fixed to the end of the main shaft and the end of the driving shaft, and the flange plates of the two flange diaphragms are rotatably synchronous through fixing bolts or elastic column pins.

[0012] The coupling assembly is specifically composed of two flange diaphragms which are detachably fixed to the end portions of the main shaft and the driving shaft, and of course, the end portions and the flange diaphragms are rotationally limited by the pin slots and the pin shafts, which are well known, the disc bodies of the flange discs are circumferentially provided with the axially penetrating connecting holes, and the fixing bolts are simultaneously arranged in the connecting holes of the two disc bodies to rotationally limit, and the fixing bolts can also be replaced by the elastic column pins, the elastic layer of the elastic column pin can provide a certain relative rotation buffer to avoid the rotation synchronization from being damaged.

[0013] In the fan structure, at least one axial extension limiting slot is arranged on the side wall of the main shaft, the mounting ring of the blade is arranged on the main shaft, the pin shaft is arranged between the mounting ring and the limiting slot, and / or the tight bolt is radially arranged on the mounting ring, and the inner end of the tight bolt abuts against the side wall of the main shaft.

[0014] The limiting slot is arranged in the middle of the main shaft and corresponds to the mounting position of the blade, the blade is arranged on the main shaft through the mounting hole, the tight bolt is radially arranged in the screw hole on the mounting ring of the blade, and the inner end abuts against the side wall of the main shaft to realize axial and circumferential fixed limiting, the pin shaft is axially inserted into the limiting slot, the pin shaft is also clamped into the corresponding groove on the inner wall of the mounting ring to realize rotation limiting, the top surface and the bottom surface of the pin shaft are in close frictional connection with the groove and the slot bottom to ensure the rotation synchronization of the main shaft and the blade.

[0015] In the fan structure, the driving motor includes a synchronous motor, the synchronous motor is fixed to the rack, and the driving shaft of the synchronous motor is connected with the main shaft.

[0016] The driving motor is a synchronous motor, which has higher efficiency than an asynchronous motor and is beneficial to reducing energy consumption cost.

[0017] In the fan structure, the rack includes a base and a cavity shell body arranged on the base, the main shaft penetrates the cavity shell body, and both ends of the main shaft are rotationally connected with the base, and the blade rotates in the cavity shell body.

[0018] The base of the rack is arranged on the ground or a mounting table, the cavity shell body forms an inner cavity, and the blade rotates in the inner cavity.

[0019] In the fan structure, the base includes a support base frame, the cavity shell body is connected to the support base frame through a fixing rod, the support base frame is further provided with a driving seat, and the driving motor is detachably fixed to the driving seat.

[0020] The support base is fixedly connected with the cavity shell body through fixing rods, and is stable in structure; the driving seat on the support base is used for mounting the driving motor; of course, corresponding rotating connecting seats are arranged at both ends of the support base and / or the cavity shell body, which are used for vertically supporting the main shaft and ensuring the rotatability of the main shaft, and the rotating connecting seat is a common knowledge.

[0021] In the fan structure, the driving seat is isosceles trapezoidal, including a long bottom side fixedly connected with the support base and a short bottom side parallel to the upper bottom side; a horizontal mounting surface is formed on the short bottom side; and the driving motor is detachably fixed on the mounting surface through bolts; and a reinforcing rod is arranged between the short bottom side and the long bottom side.

[0022] The driving seat is large at the top and small at the bottom, has good structural stability and supportability, the reinforcing rod further improves the supportability, the mounting surface of the driving seat has a certain height, and the driving shaft of the driving motor and the main shaft are coaxially arranged.

[0023] In the fan structure, the cavity shell body includes a vortex-shaped side plate and an end plate closed at the width side of the side plate; an inner cavity is formed between the end plate and the side plate; the end plate is provided with an air inlet; and an air outlet is arranged between the inner wall of the inner end of the side plate and the outer end of the side plate.

[0024] The side plate is equivalent to a long strip-shaped plate body curved into a vortex shape; of course, the inner end of the plate body is not connected with the inner wall of the plate body, and an open gap is formed therebetween; the opening is the air outlet; the blade extends in the axial direction; the specific shape is a common knowledge; after air is sucked into the air inlet, the air is rotated in the circumferential direction under the impetus of the blade and flows to the radial outside due to the centrifugal effect; the inner wall of the side plate guides the air flow to flow in the circumferential direction; and the air flow is finally discharged from the air outlet, so that the effect of outputting high-speed air flow is realized. Further, the air outlet is provided with an arc-shaped necking portion which is large at the outside and small at the inside, which is beneficial to the suction of air.

[0025] In the fan structure, the outer end of the air outlet is provided with a coupling pipe with a square cross section; the inner end of the coupling pipe is fixedly connected with the outer wall of the cavity shell body; and a maintenance opening is further arranged on the side plate; and a switch door plate is detachably arranged on the maintenance opening.

[0026] The coupling pipe is used for prolonging the air outlet; the outer end of the coupling pipe can be connected with a corresponding guide pipe, so that the output high-speed air flow is guided to the corresponding position. The inner diameter of the air inlet is smaller than the outer diameter of the blade; and the maintenance opening on the side plate can be used for disassembling, inspecting, maintaining and the like of the blade; the maintenance opening is closed by the switch panel, and the disassembly is convenient.

[0027] Compared with the prior art, the fan structure has the following advantages:

[0028] 1. The main shaft of the fan structure is directly connected with the driving shaft of the driving motor, that is, equivalent to shaft connection transmission, and has higher transmission efficiency.

[0029] 2. The driving motor is selected from a synchronous motor, which has higher efficiency than an asynchronous motor and is beneficial to reducing energy consumption cost.

[0030] 3. The side plate is equivalent to a long strip-shaped plate body bent into a vortex shape, the inner end of the plate body is not connected with the inner wall of the plate body, and an air outlet is formed therebetween, the blade extends in the axial direction, and the effect of outputting high-speed airflow is realized.

[0031] 4. The connecting pipe is used for prolonging the air outlet, the outer end of the connecting pipe can be connected with a corresponding guide pipe, and the effect of guiding the output high-speed airflow to a corresponding position is realized.

[0032] 5. The inner diameter of the air inlet is smaller than the outer diameter of the blade, and the access hole on the side plate can be used for disassembling, checking and maintaining the blade, and the access hole is closed by the switch panel, and the disassembly is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a schematic view of the overall structure provided by the utility model from the front view;

[0034] Figure 2 is a schematic view of the overall structure provided by the utility model from the side view (the blade position part of the cavity shell main body is cut open);

[0035] Figure 3 is a schematic view of the cross section of the side plate provided by the utility model;

[0036] Figure 4 is a schematic view of the structure of the main shaft provided by the utility model;

[0037] Figure 5 is a schematic view of the structure of the driving seat provided by the utility model;

[0038] Figure 6 is a schematic view of the length dimension of the rack and the driving motor provided by the utility model;

[0039] Figure 7 is a schematic view of the size of the driving motor provided by the utility model.

[0040] In the drawing, the rack 1, the base 11, the cavity shell main body 12, the supporting base frame 13, the driving seat 14, the side plate 15, the end plate 16, the air inlet 17, the air outlet 18, the connecting pipe 19, the access hole 20, the switch door plate 21, the arc-shaped neck 22, the rotating connection seat 23, the main shaft 3, the limiting groove 31, the blade 4, the mounting ring 41, the shaft coupling assembly 5, the flange diaphragm 51, the driving motor 6, the synchronous motor 61 and the driving shaft 62. DETAILED DESCRIPTION

[0041] The utility model discloses the specific embodiments of the utility model are as follows and further describe the technical scheme of the utility model with reference to the drawings, but the utility model is not limited to these embodiments.

[0042] The specific embodiments are as follows Figures 1-7 As shown in the figure, the fan structure includes the frame 1, the main shaft 3 is rotatably connected on the frame 1, the blade 4 is arranged on the main shaft 3, the main shaft 3 is fixedly connected with the driving shaft 62 of the driving motor 6 and rotates synchronously, and the driving motor 6 includes the synchronous motor 61, and the synchronous motor 61 is fixed on the frame 1.

[0043] Specifically, the fan structure is mainly composed of the main shaft 3, the blade 4 and the driving motor 6, the driving motor 6 drives the rotation of the blade 4 to realize the effect of generating air flow by driving the rotation of the main shaft 3, the frame 1 can guide and collect the air flow, the main shaft 3 and the driving shaft 62 of the driving motor 6 are directly connected, that is, equivalent to shaft connection transmission, and has higher transmission efficiency. The driving motor 6 selects the synchronous motor 61, which has higher efficiency compared with the asynchronous motor, and is beneficial to reducing energy consumption cost.

[0044] As Figure 2 The driving shaft 62 and the main shaft 3 are coaxially arranged, and are connected through the shaft coupling assembly 5. The shaft coupling assembly 5 includes T-shaped flange diaphragms 51 which are detachably fixed to the end of the main shaft 3 and the end of the driving shaft 62 respectively, and the flanges of the two flange diaphragms 51 are rotatably synchronous through the fixing bolts.

[0045] Specifically, the driving shaft 62 and the main shaft 3 are connected by the shaft coupling, which ensures the synchronous rotation of the two and has flexible detachability and convenient disassembly and assembly. The shaft coupling assembly 5 is specifically composed of two flange diaphragms 51, the flange diaphragm 51 is detachably fixed to the end of the main shaft 3 and the driving shaft 62, of course, the end and the flange diaphragm 51 are rotatably limited through the pin slot and the pin shaft, the disc body of the flange is distributed with the axial through connecting hole, and the fixing bolt is arranged in the connecting hole of the two disc bodies to realize the rotation limiting.

[0046] Further, the center screw hole is arranged on the end face of the main shaft 3, the reinforcing bolt is axially arranged in the center connecting hole of the flange diaphragm 51, and is connected with the center screw hole, so as to ensure the fixing stability of the flange diaphragm 51.

[0047] In the embodiment, as Figure 6 , 7As shown, the length of the rack 1 is 1130mm, the width is 1481.5mm, the height is 1690.5mm, the total length of the main shaft 3 is 1644mm, the cylinder length of the driving motor 6 is 370mm, the width is 484mm, the height is 500mm, the length of the driving shaft 62 exposed from the cylinder is 110mm, and the length of the driving motor 6 is smaller, which can be applied to smaller installation space and improve compatibility.

[0048] As shown in Figure 2 , 4 , an axially extending limiting groove 31 is arranged on the side wall of the main shaft 3, the mounting ring 41 of the blade 4 is sleeved on the main shaft 3, and a pin shaft is arranged between the mounting ring 41 and the limiting groove 31. A set screw is arranged radially on the mounting ring 41, and the inner end of the set screw abuts against the side wall of the main shaft 3.

[0049] Specifically, the limiting groove 31 is arranged in the middle of the main shaft 3, which corresponds to the mounting position of the blade 4. The blade 4 is sleeved on the main shaft 3 through the mounting hole, the set screw is radially arranged in the screw hole on the mounting ring 41 of the blade 4, and the inner end abuts against the side wall of the main shaft 3, realizing axial and circumferential fixing and limiting. The pin shaft can be axially inserted into the limiting groove 31, and the pin shaft is also clamped into the corresponding groove on the inner wall of the mounting ring 41, realizing rotational limiting. The top surface and the bottom surface of the pin shaft are in close frictional connection with the groove and the groove bottom of the limiting groove 31, so as to ensure the synchronous rotation of the main shaft 3 and the blade 4.

[0050] As shown in Figure 1 , 2 , 3, 5, the rack 1 comprises a base 11 and a cavity shell body 12 arranged on the base 11. The main shaft 3 penetrates the cavity shell body 12, and both ends are rotatably connected with the base 11. The blade 4 rotates in the cavity shell body 12. The base 11 comprises a supporting base frame 13. The cavity shell body 12 is connected to the supporting base frame 13 through a fixing rod. The supporting base frame 13 is further provided with a driving seat 14. The driving motor 6 is detachably fixed on the driving seat 14. The driving seat 14 is isosceles trapezoidal, comprising a long bottom side fixedly connected with the supporting base frame 13 and a short bottom side parallel to the upper bottom side. A horizontal mounting surface is formed on the short bottom side. The driving motor 6 is detachably fixed on the mounting surface through bolts. A reinforcing rod is arranged between the short bottom side and the long bottom side.

[0051] Specifically, the base 11 of the rack 1 is placed on the ground or a mounting table, the cavity shell body 12 is formed with an inner cavity, and the blades 4 rotate in the inner cavity. The support base 13 is fixedly connected with the cavity shell body 12 through the fixing rod, the structure is stable, and the driving seat 14 on the support base 13 is used for mounting the driving motor 6. Corresponding rotating connecting seats 23 are arranged on the support base 13 and the two ends of the cavity shell body 12, which are used for vertically supporting the main shaft 3 and ensuring the rotatability of the main shaft 3. The driving seat 14 is small at the top and large at the bottom, has good structural stability and supportability, the reinforcing rod in the driving seat 14 further improves the supportability, the mounting surface of the driving seat 14 has a certain height, and the driving shaft 62 of the driving motor 6 and the main shaft 3 are coaxially arranged.

[0052] As shown in Figure 1 , 2 , 3, the cavity shell body 12 includes a vortex-shaped side plate 15 and an end plate 16 closed on the width side of the side plate 15. An inner cavity is formed between the end plate 16 and the side plate 15. The end plate 16 is provided with an air inlet 17. The inner wall between the inner end of the side plate 15 and the outer end of the side plate 15 is provided with an air outlet 18.

[0053] Specifically, the side plate 15 is curved into a vortex shape like a long strip-shaped plate body. Of course, the inner end of the plate body is not connected with the inner wall of the plate body, and an open gap is formed therebetween. The opening is the air outlet 18. The blades 4 extend axially. After the air is sucked into the air inlet 17, it rotates circumferentially under the impetus of the blades 4 and flows to the radial outside due to the centrifugal effect. The inner wall of the side plate 15 guides the air flow to achieve the effect of circumferential flow. The air flow is finally discharged from the air outlet 18 to achieve the effect of outputting high-speed air flow. Further, the air outlet 18 is provided with an arc-shaped necking 22 which is large outside and small inside, which is conducive to the suction of air.

[0054] As an optimization of the embodiment, the outer end of the air outlet 18 is provided with a coupling pipe 19 with a square cross section, and the inner end of the coupling pipe 19 is fixedly connected with the outer wall of the cavity shell body 12. The side plate 15 is also provided with an access hole 20, and the access hole 20 is detachably provided with a switch door plate 21.

[0055] Specifically, the coupling pipe 19 is used to lengthen the air outlet 18, and the outer end of the coupling pipe 19 can be connected with a corresponding guide pipe to guide the output high-speed air flow to the corresponding position. The inner diameter of the air inlet 17 is smaller than the outer diameter of the blades 4. The access hole 20 on the side plate 15 can be used for disassembly, inspection, maintenance, etc. of the blades 4. The access hole 20 is closed by the switch panel, and the disassembly is convenient.

[0056] Specific working principle: when working, the synchronous motor 61 is started, the main shaft 3 is driven to rotate, the main shaft 3 drives the blade 4 to rotate, the air is sucked into the inner cavity from the air inlet 17, the internal air rotates in the circumferential direction under the agitation of the blade 4, and then the air flow flows along the inner wall of the side plate 15 until it is output from the air outlet 18 through the connecting pipe 19.

[0057] In specific practice, the original fan model parameters: KHF-1120, motor 75KW, air volume 90000m 3 / h; the new fan model parameters: ZEF-900, motor 55KW, air volume 80000m 3 / h, the new fan is adapted to the frequency converter model Yaskawa E1000 or above. The current before the transformation is 43.46A, the frequency converter operating frequency: 42HZ (original full load 50HZ), the current after the transformation is 30.29A, the frequency converter operating frequency: 92.5HZ (equivalent to the original 31HZ), reduced by 11HZ.

[0058] In addition, the asynchronous motor is changed to the synchronous motor, the new type synchronous motor belongs to the low energy consumption motor in the market, greatly improves the use efficiency, the motor power is reduced from 75KW to 55KW, reduces 20KW, and the fan structure runs at 92.5HZ (equivalent to the original 31HZ), when the synchronous motor is full load, can reach 150HZ, has more sufficient operation margin. From the energy consumption, the old motor average daily power consumption is 619 degrees (electricity meter), the new synchronous motor average daily power consumption is 461 degrees (electricity meter). The power consumption is reduced by 158 degrees / day, the saving cost is 94.8 yuan / day, the power saving ratio is more than 25.5%. It is fully explained that the utility model has the effect of energy saving and high efficiency.

[0059] The specific embodiments described in the present application are only illustrative of the spirit of the utility model. Those skilled in the art to which the utility model belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the utility model or exceed the scope defined by the appended claims.

Claims

1. A fan structure, characterized by comprising: The utility model provides a kind of wind turbine, including rack (1), the rack (1) is rotatably connected with main shaft (3), the main shaft (3) is provided with blade (4), the main shaft (3) is fixedly connected with the drive shaft (62) of driving motor (6) rotation synchronization.

2. The fan structure according to claim 1, characterized by The drive shaft (62) and the main shaft (3) are coaxially arranged, and are connected by a shaft coupling assembly (5).

3. The fan structure according to claim 2, characterized in that, The shaft coupling assembly (5) includes T-shaped flange diaphragm (51) which is detachably fixed to the end of the main shaft (3) and the end of the drive shaft (62) respectively, and the flanges of the two flange diaphragms (51) are rotationally synchronized by fixing bolts or elastic pins.

4. The fan structure according to claim 1, characterized by The main shaft (3) is provided with at least one axially extending limiting groove (31) on the side wall, the mounting ring (41) of the blade (4) is sleeved on the main shaft (3), a pin shaft is provided between the mounting ring (41) and the limiting groove (31), and / or a radial tight bolt is provided on the mounting ring (41), and the inner end of the tight bolt abuts against the side wall of the main shaft (3).

5. The fan structure according to claim 1, wherein The driving motor (6) is a synchronous motor (61), which is fixed to the rack (1), and its drive shaft (62) is connected with the main shaft (3), and the axial length to radial height ratio of the synchronous motor is 1:0.8-1.

5.

6. The fan structure according to any one of claims 1 to 5, characterized in that, The rack (1) includes a base (11) and a cavity body (12) arranged on the base (11), the main shaft (3) penetrates the cavity body (12), and both ends are rotationally connected with the base (11), and the blade (4) rotates in the cavity body (12).

7. The fan structure according to claim 6, characterized by The base (11) includes a support base (13), the cavity body (12) is connected to the support base (13) by a fixing rod, and the support base (13) is further provided with a driving seat (14), and the driving motor (6) is detachably fixed to the driving seat (14).

8. The fan structure according to claim 7, characterized by The driving seat (14) is isosceles trapezoidal, including a long bottom side fixedly connected with the support base (13) and a short bottom side parallel to the upper bottom side, a horizontal mounting surface is formed on the short bottom side, and the driving motor (6) is detachably fixed to the mounting surface by bolts; a reinforcing rod is arranged between the short bottom side and the long bottom side.

9. The fan structure according to claim 6, wherein The cavity body (12) includes a vortex side plate (15) and an end plate (16) closed on the width side of the side plate (15), an inner cavity is formed between the end plate (16) and the side plate (15), an air inlet (17) penetrates the end plate (16), and an air outlet (18) is arranged between the inner end of the side plate (15) and the inner wall of the outer end of the side plate (15).

10. The fan structure according to claim 9, wherein The outer end of the air outlet (18) is provided with a coupling pipe (19) with a square cross section, and the inner end of the coupling pipe (19) is fixedly connected with the outer wall of the cavity body (12). The side plate (15) is further provided with an access opening (20), and a switch door plate (21) is detachably arranged on the access opening (20).

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