CN219119473U - Centrifugal fan with leakage protection - Google Patents

Abstract

The utility model discloses a centrifugal fan with leakage protection, which comprises a base, wherein a fixing plate is arranged at the top end of the base, the fixing plate is connected with the base through a damping component, a mounting frame is arranged at the top end of the fixing plate, a double-shaft motor is arranged at the top end of the mounting frame, symmetrically arranged connecting seats are respectively arranged at two sides of the double-shaft motor, the connecting seats are connected with the mounting frame through the leakage protection component, symmetrically arranged wind shields are arranged at two sides of the double-shaft motor, and the wind shields are fixedly connected with the fixing plate through a fixing frame. The beneficial effects are that: can further improve its centrifugal fan's security through adding leakage protection subassembly, make its work more stable, can reduce the vibration amplitude that biax motor produced when the operation through adding damper, prevent biax motor inner element because of vibrations production is not hard up or damage, and then increase biax motor's life to can reduce its certain noise.

Description

Centrifugal fan with leakage protection

Technical Field

The utility model relates to the technical field of centrifugal fans, in particular to a centrifugal fan with leakage protection.

Background

The centrifugal fan is a machine which increases the pressure of gas and discharges the gas by means of input mechanical energy, and is a driven fluid machine. The centrifugal fan is based on the principle that kinetic energy is converted into potential energy, and the gas is accelerated by utilizing an impeller rotating at a high speed, and then the flow direction is decelerated and changed, so that the kinetic energy is converted into potential energy. In a single stage centrifugal fan, gas enters the impeller from an axial direction, changes to a radial direction as it flows through the impeller, and then enters the diffuser.

According to the centrifugal fan with multistage leakage protection disclosed in Chinese patent CN201620413364.7, the application comprises a mounting bottom plate, a volute, a double-extension-shaft motor and a wind wheel, wherein the mounting bottom plate comprises a bottom plate body, a volute mounting part and a motor mounting part; the volute is arranged on the volute mounting part; the wind wheel is fixed on two rotating shafts of the double-extension-shaft motor and is positioned in the volute; an exhaust outlet is arranged at the bottom of the volute, and an air inlet is arranged on the side wall of the volute; the motor installation part comprises a connecting plate and an upward-protruding installation plate, and the connecting plate is arranged on two sides of the upward-protruding installation plate; the connecting plate is fixed on the bottom plate body through the cooperation of the bolts and the gaskets; the novel centrifugal fan is characterized by further comprising a leakage protection device, wherein the leakage protection device comprises a penetrating bolt, an insulating sleeve, an insulating block and a bolt sheath, so that the novel centrifugal fan is provided with multistage leakage protection, the working stability is strong, but a double-shaft motor of the conventional centrifugal fan is fixedly connected with a base, vibration is generated when the motor is operated, and internal elements of the motor are easy to loosen or damage when the vibration amplitude is overlarge.

For the problems in the related art, no effective solution has been proposed at present.

Disclosure of Invention

Aiming at the problems in the related art, the utility model provides a centrifugal fan with leakage protection so as to overcome the technical problems in the prior art.

For this purpose, the utility model adopts the following specific technical scheme:

the utility model provides a centrifugal fan with earth leakage protection, includes the base, the base top is equipped with the fixed plate, the fixed plate pass through damping module with the base is connected, the fixed plate top is equipped with the mounting bracket, the mounting bracket top is equipped with the biax motor, biax motor both sides all are equipped with the connecting seat that the symmetry set up respectively, the connecting seat pass through earth leakage protection subassembly with the mounting bracket is connected, biax motor both sides are equipped with the symmetry and set up the fan housing, the fan housing pass through the mount with fixed plate fixed connection, biax motor drive shaft extends to two sets respectively in the fan housing and be connected with centrifugal blade, the fan housing is kept away from one side of biax motor has seted up the inlet opening, be equipped with on the inlet opening with its assorted safety filter, the air outlet has been seted up to the fan housing outer wall, earth leakage protection subassembly includes a plurality of evenly distributed's that the mounting bracket top was equipped with insulating sleeve two, the connecting seat top is equipped with respectively run through the connecting seat insulating sleeve one insulating sleeve two the insulating sleeve top is equipped with the insulating sleeve one, insulating sleeve top is equipped with the insulating sleeve one and two the connecting sleeve top is equipped with and is connected with two sets of connecting sleeve and is equipped with two the same locking bolt with two outer wall bolt and two top and two sets of the same locking sleeve.

Preferably, the fan housing is located one side of the air inlet hole and is provided with a plurality of fixed blocks distributed in a circumferential array, the fixed blocks are provided with limiting grooves, and the outer wall of the safety filter screen is provided with limiting blocks matched with the limiting grooves.

Preferably, the damping component comprises a stand which is symmetrically arranged on the inner bottom end of the base, guide rods are respectively arranged on opposite sides of the stand, moving blocks are respectively sleeved on the outer walls of the guide rods, the moving blocks are close to one side of the stand and are positioned on the outer walls of the guide rods, damping springs I are sleeved on the moving blocks, the moving blocks are connected with the stand through the damping springs I, connecting plates are arranged on the bottom ends of the fixing plates, the connecting plates are respectively connected with the moving blocks through movable rods, and dampers which are symmetrically arranged and connected with the fixing plates are arranged on the inner bottom ends of the moving blocks.

Preferably, the bottom end of the connecting plate is provided with a pressing block, the bottom end of the pressing block is provided with an elastic rubber column connected with the base, and the outer wall of the elastic rubber column is sleeved with a damping spring II respectively connected with the pressing block and the base.

Preferably, the movable rod is hinged with the movable block and the connecting plate respectively.

Preferably, the moving block is provided with a guide hole matched with the guide rod.

Preferably, the inner wall of the base is provided with symmetrically arranged limiting grooves, and limiting plates matched with the limiting grooves are arranged on two sides of the fixing plate.

The beneficial effects of the utility model are as follows: can further improve its centrifugal fan's security through adding leakage protection subassembly, make its work more stable, can reduce the vibration amplitude that biax motor produced when the operation through adding damper, prevent biax motor inner element because of vibrations production is not hard up or damage, and then increase biax motor's life to can reduce its certain noise.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of a centrifugal fan with leakage protection according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a centrifugal blade structure in a centrifugal fan with leakage protection according to an embodiment of the utility model;

FIG. 3 is a schematic view of a fan housing structure for a centrifugal fan with leakage protection according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a safety screen structure in a centrifugal fan with leakage protection according to an embodiment of the utility model;

FIG. 5 is an enlarged view of a portion of FIG. 1 at A;

fig. 6 is a cross-sectional view of a base in a centrifugal fan with leakage protection according to an embodiment of the utility model.

In the figure:

1. a base; 2. a fixing plate; 3. a mounting frame; 4. a biaxial motor; 5. a fan housing; 6. centrifugal blades; 7. an air inlet hole; 8. a safety filter screen; 9. an air outlet; 10. an insulating sleeve I; 11. a connecting seat; 12. an insulation sleeve II; 13. a bolt; 14. a first lock nut; 15. a second lock nut; 16. a bolt sleeve; 17. a fixed block; 18. a limit groove; 19. a limiting block; 20. a vertical frame; 21. a guide rod; 22. a moving block; 23. a damping spring I; 24. a connecting plate; 25. a movable rod; 26. a damper; 27. briquetting; 28. an elastic rubber column; 29. damping spring II; 30. a limit groove; 31. and a limiting plate.

Detailed Description

For the purpose of further illustrating the various embodiments, the present utility model provides the accompanying drawings, which are a part of the disclosure of the present utility model, and which are mainly used to illustrate the embodiments and, together with the description, serve to explain the principles of the embodiments, and with reference to these descriptions, one skilled in the art will recognize other possible implementations and advantages of the present utility model, wherein elements are not drawn to scale, and like reference numerals are generally used to designate like elements.

According to an embodiment of the present utility model, there is provided a centrifugal fan with leakage protection.

Embodiment one;

as shown in fig. 1-6, a centrifugal fan with leakage protection according to an embodiment of the utility model comprises a base 1, and is characterized in that a fixing plate 2 is arranged at the top end of the base 1, the fixing plate 2 is connected with the base 1 through a damping component, an air inlet 7 is formed in the top end of the fixing plate 2, a double-shaft motor 4 is arranged at the top end of the mounting frame 3, symmetrically arranged connecting seats 11 are respectively arranged at two sides of the double-shaft motor 4, the connecting seats 11 are connected with the mounting frame 3 through a leakage protection component, symmetrically arranged wind covers 5 are arranged at two sides of the double-shaft motor 4, the wind covers 5 are fixedly connected with the fixing plate 2 through a fixing frame, driving shafts of the double-shaft motor 4 are respectively extended into the wind covers 5 and are connected with a centrifugal blade 6, a safety filter screen 8 matched with the wind covers 5 is arranged on one side of the air inlet 7, an air outlet 9 is formed in the outer wall of the wind cover 5, the leakage protection component comprises a plurality of evenly distributed insulating sleeves 10 arranged at the top end of the 3, two insulating sleeves 12 are respectively arranged at the bottom ends of the two insulating sleeves 12, two insulating sleeves 13 are respectively connected with the two insulating sleeves 13, two insulating sleeves are respectively arranged at the two ends of the two insulating sleeves 13, and the two insulating sleeves are respectively connected with the two insulating sleeves 13, and the two insulating sleeves are respectively provided with the two insulating sleeves 13 are respectively, and the two insulating sleeves are respectively connected with the two insulating sleeves 13.

Embodiment two;

as shown in fig. 1-6, a centrifugal fan with leakage protection according to an embodiment of the utility model comprises a base 1, and is characterized in that a fixing plate 2 is arranged at the top end of the base 1, the fixing plate 2 is connected with the base 1 through a damping component, an air inlet 7 is formed in the top end of the fixing plate 2, a double-shaft motor 4 is arranged at the top end of the mounting frame 3, symmetrically arranged connecting seats 11 are respectively arranged at two sides of the double-shaft motor 4, the connecting seats 11 are connected with the mounting frame 3 through a leakage protection component, symmetrically arranged wind covers 5 are arranged at two sides of the double-shaft motor 4, the wind covers 5 are fixedly connected with the fixing plate 2 through a fixing frame, driving shafts of the double-shaft motor 4 are respectively extended into the wind covers 5 and are connected with a centrifugal blade 6, a safety filter screen 8 matched with the wind covers 5 is arranged on one side of the air inlet 7, an air outlet 9 is formed in the outer wall of the wind cover 5, the leakage protection component comprises a plurality of evenly distributed insulating sleeves 10 arranged at the top end of the 3, two insulating sleeves 12 are respectively arranged at the bottom ends of the two insulating sleeves 12, two insulating sleeves 13 are respectively connected with the two insulating sleeves 13, two insulating sleeves are respectively arranged at the two ends of the two insulating sleeves 13, and the two insulating sleeves are respectively connected with the two insulating sleeves 13, and the two insulating sleeves are respectively provided with the two insulating sleeves 13 are respectively, and the two insulating sleeves are respectively connected with the two insulating sleeves 13. The fan housing 5 is located one side of the air inlet 7 is provided with a plurality of fixed blocks 17 distributed in a circumferential array, the fixed blocks 17 are provided with limiting grooves 18, and the outer wall of the safety filter screen 8 is provided with limiting blocks 19 matched with the limiting grooves 18. Through cup jointing insulating cover one 10 and insulating cover two 12 at bolt 13 outer wall, can prevent personnel touching to the outer insulating parcel of bolt 13, it is enough to advance a reduction and foreign object contact to live the bolt 13 at the both ends through the cover of bolt 16 simultaneously, can block dust impurity when centrifugal blade 6 is inhaling the wind through adding safety filter screen 8, safety filter screen 8 is installed fast through stopper 19 and spacing groove 18 cooperation simultaneously, only need rotatory safety filter screen 8 when needs clear up safety filter screen 8, make stopper 19 on the safety filter screen 8 break away from spacing groove 18 can take off it and clear up, can further improve its centrifugal fan's security through adding electric leakage protection subassembly, make its work more stable.

Embodiment three;

as shown in fig. 1-6, a centrifugal fan with leakage protection according to an embodiment of the utility model comprises a base 1, and is characterized in that a fixing plate 2 is arranged at the top end of the base 1, the fixing plate 2 is connected with the base 1 through a damping component, an air inlet 7 is formed in the top end of the fixing plate 2, a double-shaft motor 4 is arranged at the top end of the mounting frame 3, symmetrically arranged connecting seats 11 are respectively arranged at two sides of the double-shaft motor 4, the connecting seats 11 are connected with the mounting frame 3 through a leakage protection component, symmetrically arranged wind covers 5 are arranged at two sides of the double-shaft motor 4, the wind covers 5 are fixedly connected with the fixing plate 2 through a fixing frame, driving shafts of the double-shaft motor 4 are respectively extended into the wind covers 5 and are connected with a centrifugal blade 6, a safety filter screen 8 matched with the wind covers 5 is arranged on one side of the air inlet 7, an air outlet 9 is formed in the outer wall of the wind cover 5, the leakage protection component comprises a plurality of evenly distributed insulating sleeves 10 arranged at the top end of the 3, two insulating sleeves 12 are respectively arranged at the bottom ends of the two insulating sleeves 12, two insulating sleeves 13 are respectively connected with the two insulating sleeves 13, two insulating sleeves are respectively arranged at the two ends of the two insulating sleeves 13, and the two insulating sleeves are respectively connected with the two insulating sleeves 13, and the two insulating sleeves are respectively provided with the two insulating sleeves 13 are respectively, and the two insulating sleeves are respectively connected with the two insulating sleeves 13. The damping component comprises a stand 20 which is symmetrically arranged on the inner bottom end of a base 1, two groups of guide rods 21 are respectively arranged on opposite sides of the stand 20, moving blocks 22 are respectively sleeved on the outer walls of the guide rods 21, the moving blocks 22 are close to one side of the stand 20 and are positioned on the outer walls of the guide rods 21, damping springs 23 are sleeved on the outer walls of the guide rods, the moving blocks 22 are connected with the stand 20 through the damping springs 23, a connecting plate 24 is arranged at the bottom end of a fixed plate 2, the connecting plate 24 is respectively connected with the two groups of moving blocks 22 through movable rods 25, and dampers 26 which are symmetrically arranged and connected with the fixed plate 2 are arranged on the inner bottom end of the moving blocks 22. The bottom of the connecting plate 24 is provided with a pressing block 27, the bottom of the pressing block 27 is provided with an elastic rubber column 28 connected with the base 1, and the outer wall of the elastic rubber column 28 is sleeved with a damping spring II 29 respectively connected with the pressing block 27 and the base 1. The movable rod 25 is hinged to the movable block 22 and the connecting plate 24, respectively. The moving block 22 is provided with a guide hole matched with the guide rod 21. The inner wall of the base 1 is provided with limit grooves 30 symmetrically arranged, and two sides of the fixed plate 2 are provided with limit plates 31 matched with the limit grooves 30. When the double-shaft motor 4 runs, vibration is generated, firstly, the double-shaft motor 4 extrudes the fixed plate 2, the fixed plate 2 downwards extrudes the connecting plate 24, the connecting plate 24 extrudes two groups of movable rods 25, the movable rods 25 are hinged with the connecting plate 24 and the movable block 22, then the movable rods 25 rotate and extrude the movable block 22, the movable block 22 extrudes the first damping spring 23, meanwhile, the connecting plate 24 extrudes the second damping spring 29 through the first pressing block 27, the first damping spring 23, the second elastic rubber column 28 and the second damping spring 29 are matched to offset the downward external force to a certain extent, meanwhile, the vibration amplitude is reduced by the damper 26, the vibration amplitude generated by the double-shaft motor 4 during running can be reduced by adding the damping component, the internal elements of the double-shaft motor 4 are prevented from loosening or damaging due to vibration, the service life of the double-shaft motor 4 is prolonged, and certain noise can be reduced.

During practical application, the first insulating sleeve 10 and the second insulating sleeve 12 are sleeved on the outer wall of the bolt 13, so that the bolt 13 can be insulated and wrapped to prevent personnel from touching, meanwhile, the two ends of the bolt 13 are sleeved by the first bolt sleeve 16 to reduce contact with foreign objects, the centrifugal blade 6 can be blocked against dust and impurities when in air suction by adding the safety filter screen 8, meanwhile, the safety filter screen 8 is quickly installed by matching the limiting block 19 with the limiting groove 18, when the safety filter screen 8 needs to be cleaned, the limiting block 19 on the safety filter screen 8 is separated from the limiting groove 18 to be removed and cleaned, the safety of a centrifugal fan can be further improved by adding the electric leakage protection component, and the operation of the centrifugal fan is more stable; when the double-shaft motor 4 runs, vibration is generated, firstly, the double-shaft motor 4 extrudes the fixed plate 2, the fixed plate 2 downwards extrudes the connecting plate 24, the connecting plate 24 extrudes two groups of movable rods 25, the movable rods 25 are hinged with the connecting plate 24 and the movable block 22, then the movable rods 25 rotate and extrude the movable block 22, the movable block 22 extrudes the first damping spring 23, meanwhile, the connecting plate 24 extrudes the second damping spring 29 through the first pressing block 27, the first damping spring 23, the second elastic rubber column 28 and the second damping spring 29 are matched to offset the downward external force to a certain extent, meanwhile, the vibration amplitude is reduced by the damper 26, the vibration amplitude generated by the double-shaft motor 4 during running can be reduced by adding the damping component, the internal elements of the double-shaft motor 4 are prevented from loosening or damaging due to vibration, the service life of the double-shaft motor 4 is prolonged, and certain noise can be reduced.

In summary, by means of the above technical scheme of the present utility model, the safety of the centrifugal fan can be further improved by adding the leakage protection component, so that the centrifugal fan can work more stably, the vibration amplitude generated when the dual-shaft motor operates can be reduced by adding the damping component, the internal elements of the dual-shaft motor are prevented from loosening or damaging due to vibration, the service life of the dual-shaft motor is further prolonged, and certain noise of the dual-shaft motor can be reduced.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (7)

1. The utility model provides a centrifugal fan with earth leakage protection, includes base (1), its characterized in that, base (1) top is equipped with fixed plate (2), fixed plate (2) pass through damper with base (1) are connected, fixed plate (2) top is equipped with mounting bracket (3), mounting bracket (3) top is equipped with biax motor (4), biax motor (4) both sides all are equipped with connecting seat (11) that the symmetry set up respectively, connecting seat (11) pass through earth leakage protection subassembly with mounting bracket (3) are connected, biax motor (4) both sides are equipped with symmetry setting fan housing (5), fan housing (5) pass through the mount with fixed plate (2) fixed connection, biax motor (4) drive shaft extend respectively to two sets of in fan housing (5) and be connected with centrifugal blade (6), fan housing (5) are kept away from one side of biax motor (4) has seted up inlet opening (7), be equipped with on inlet opening (7) with assorted safety vent (8) with it, fan housing (5) both sides are equipped with symmetry setting fan housing (5), fan housing (5) pass through the mount pad (5) with fixed connection of fixed plate (2) are fixed connection, fan housing (4) drive shaft extends to two sets up in fan housing (5) and is equipped with one piece (6), the mounting bracket (3) bottom be equipped with insulating cover two (12) of insulating cover one (10) symmetrical, connecting seat (11) top be equipped with respectively run through connecting seat (11) insulating cover one (10) mounting bracket (3) with bolt (13) of insulating cover two (12), connecting seat (11) top just is located cover is equipped with locking nut one (14) with it on bolt (13) outer wall, insulating cover two (12) bottom just is located cover is equipped with locking nut two (15) with it on bolt (13) outer wall, bolt (13) both ends all overlap respectively and are equipped with bolt housing (16).

2. The centrifugal fan with the leakage protection according to claim 1, wherein a plurality of circumferentially-arrayed fixed blocks (17) are arranged on one side of the air inlet hole (7) of the fan housing (5), limiting grooves (18) are formed in the fixed blocks (17), and limiting blocks (19) matched with the limiting grooves (18) are arranged on the outer wall of the safety filter screen (8).

3. The centrifugal fan with electric leakage protection according to claim 1, wherein the shock absorbing component comprises a symmetrical vertical frame (20) arranged at the inner bottom end of the base (1), two groups of guide rods (21) are respectively arranged at opposite sides of the vertical frame (20), two groups of guide rods (21) are respectively sleeved with a moving block (22), the moving block (22) is close to one side of the vertical frame (20) and is positioned on the outer wall of the guide rod (21) in a sleeved mode, a shock absorbing spring I (23) is arranged on the outer wall of the guide rod (21), the moving block (22) is connected with the vertical frame (20) through the shock absorbing spring I (23), a connecting plate (24) is arranged at the bottom end of the fixed plate (2), the connecting plate (24) is respectively connected with the two groups of moving blocks (22) through movable rods (25), and dampers (26) which are symmetrically arranged at the inner bottom end of the moving blocks (22) and are connected with the fixed plate (2).

4. A centrifugal fan with leakage protection according to claim 3, wherein a pressing block (27) is arranged at the bottom end of the connecting plate (24), an elastic rubber column (28) connected with the base (1) is arranged at the bottom end of the pressing block (27), and a damping spring II (29) respectively connected with the pressing block (27) and the base (1) is sleeved on the outer wall of the elastic rubber column (28).

5. A centrifugal fan with leakage protection according to claim 3, characterized in that the movable lever (25) is hinged to the moving block (22) and the connecting plate (24), respectively.

6. A centrifugal fan with leakage protection according to claim 3, characterized in that the moving block (22) is provided with a guiding hole matching the guiding rod (21).

7. A centrifugal fan with leakage protection according to claim 3, wherein the inner wall of the base (1) is provided with symmetrically arranged limit grooves (30), and two sides of the fixing plate (2) are provided with limit plates (31) matched with the limit grooves (30).

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