Centrifugal fire-fighting smoke exhaust fan

Abstract

The utility model discloses a centrifugal fire-fighting smoke exhaust fan. The centrifugal fire-fighting smoke exhaust fan comprises a centrifugal fan main body, a motor and a base, the device is characterized in that the base comprises two longitudinal beams, two first cross beams and two second cross beams; the two longitudinal beams are distributed in parallel at an interval; the two ends of the two first cross beams are detachably and fixedly connected with the two longitudinal beams respectively; the two ends of the two second cross beams are detachably and fixedly connected with the two longitudinal beams respectively; the bottom face of the centrifugal fan body is detachably and fixedly connected with the two longitudinal beams, and the two side walls of the centrifugal fan body are detachably and fixedly connected with the two first cross beams respectively. And the motor is detachably and fixedly mounted on the two second cross beams. The centrifugal fan main body, the motor and the base are detachable, and the base is detachable, so that the centrifugal fan is mainly applied to a large-size product, can enter the interior from a narrow doorway to be assembled on site, and is convenient to transport.

Description

TECHNICAL FIELD

[0001] The utility model relates to a centrifugal fire smoke exhaust fan. BACKGROUND

[0002] The centrifugal fire smoke exhaust fan is a high-efficiency ventilation equipment for removing fire smoke, high-temperature gas and toxic gas in a building fire system. When the fan impeller of the centrifugal fire smoke exhaust fan rotates at high speed, the gas enters the impeller from the axial direction and is thrown out radially under the action of centrifugal force, and is discharged at high speed after being pressurized by the volute, forming a negative pressure to suck in new air flow, realizing continuous smoke exhaust, and the gas is discharged radially 90° along the impeller, which is convenient for directional delivery through the air pipe and can avoid airflow turbulence. However, the current centrifugal fire smoke exhaust fan (referring to the published patent CN217206931U) adopts the structure that the motor is arranged outside the centrifugal fan main body beside the box body, so that the motor is away from the high-temperature area of the box body, the motor is independent and protected, and the heat dissipation effect of the motor is good, so that the motor is not affected by high smoke and can work normally and stably for a long time. However, the motor arranged outside the centrifugal fan main body beside the box body has the following problems:

[0003] Because the overall size of the centrifugal fire smoke exhaust fan is large, and the centrifugal fan main body (the bottom surface of the box body) and the base are integrated, and the base as a whole cannot be disassembled, the centrifugal fire smoke exhaust fan is inconvenient to transport, and when the installation inlet is narrow, it cannot enter, which is not flexible and convenient. Especially for large-size centrifugal fire smoke exhaust fan products, the problem is more obvious. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a centrifugal fire smoke exhaust fan to solve the problem that the centrifugal fan main body and the base of the existing centrifugal fire smoke exhaust fan are integrated, and the base as a whole cannot be disassembled, causing the centrifugal fire smoke exhaust fan to be inconvenient to transport, and when the installation inlet is narrow, it cannot enter.

[0005] In order to achieve the above object, the utility model discloses technical schemes as follows: a centrifugal fire-fighting smoke exhaust fan, including centrifugal fan main body, motor and base, the centrifugal fan main body with motor is connected through belt drive, the motor is located the centrifugal fan main body's outer side, its characterized in that: the base includes two longitudinal beams, two first cross beams and two second cross beams, the two longitudinal beams are parallel and are spaced apart, the two first cross beams are parallel and are spaced apart, the two second cross beams are parallel and are spaced apart, the both ends of the two first cross beams are respectively with two longitudinal beams detachably fixedly connected, the both ends of the two second cross beams are respectively with two longitudinal beams detachably fixedly connected, the bottom surface of the centrifugal fan main body is detachably fixedly connected with the two longitudinal beams and its two side walls are respectively detachably fixedly connected with the two first cross beams, and the motor is detachably fixedly installed on the two second cross beams.

[0006] Further, the first cross beam and the longitudinal beam are fixedly connected through a first bolt and nut.

[0007] Further, the second cross beam and the longitudinal beam are fixedly connected through a second bolt and nut.

[0008] Further, the motor and the second cross beam are fixedly connected through a third bolt and nut.

[0009] Further, the first cross beam and the side wall of the centrifugal fan main body are fixedly connected through a fourth bolt.

[0010] Further, the bottom surface of the centrifugal fan main body and the longitudinal beam are fixedly connected through a fifth bolt.

[0011] Further, the both ends of the first cross beam are provided with first longitudinal beam connecting holes, the middle part of the first cross beam is provided with a plurality of centrifugal fan main body side connecting holes, the both ends of the second cross beam are provided with second longitudinal beam connecting holes, the middle part of the second cross beam is provided with two motor connecting holes, and the longitudinal beam is provided with two first cross beam connecting holes, a plurality of centrifugal fan main body bottom connecting holes and two second cross beam connecting holes.

[0012] Further, the bottom surface of the centrifugal fan main body and the longitudinal beam are further positioned through a positioning pin.

[0013] Further, the longitudinal beam, the first cross beam and the second cross beam are made of U-shaped steel.

[0014] The utility model has the advantages of:

[0015] First, this utility model has the advantages of detachably fixing the motor to the base and the centrifugal fan body to the base. The base itself is also detachable, and the two longitudinal beams, two first crossbeams, and two second crossbeams of the base can be disassembled for transport and on-site assembly, making it particularly suitable for large fans. This solves the problem that existing centrifugal fire-fighting smoke exhaust fans have a fixed centrifugal fan body and base that cannot be disassembled, and the base itself cannot be disassembled either, resulting in inconvenient transportation of the entire centrifugal fire-fighting smoke exhaust fan and the inability to enter when the installation entrance is narrow.

[0016] Secondly, since the bottom surface of the centrifugal fan body is detachably fixedly connected to the two longitudinal beams and its two side walls are respectively detachably fixedly connected to the two first cross beams, the two side walls of the centrifugal fan body are blocked and symmetrically clamped and constrained by the two longitudinal beams, which can prevent the centrifugal fan body from loosening. At the same time, it can effectively counteract the asymmetrical vibration during the operation of the fan, improve the overall stability, and reduce the impact of resonance on the equipment life.

[0017] Secondly, since the two first crossbeams are detachably and fixedly connected to the centrifugal fan body and also detachably and fixedly connected to the two longitudinal beams, the two first crossbeams increase the connection strength between the two longitudinal beams of the base and the connection strength between the centrifugal fan body and the base. The design is ingenious and the layout is very reasonable, which can achieve the effect of combined reinforcement. Attached Figure Description

[0018] Figure 1 This is a front view of a centrifugal fire-fighting smoke exhaust fan according to this utility model.

[0019] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0020] Figure 3 yes Figure 1 Enlarged view of section B in the middle.

[0021] Figure 4 This is a left view of a centrifugal fire-fighting smoke exhaust fan according to this utility model.

[0022] Figures 5-7 This is a perspective view of a centrifugal fire-fighting smoke exhaust fan according to this utility model.

[0023] Figures 8-9 This is a 3D view of the base.

[0024] Figure 10 This is a three-dimensional diagram of the longitudinal beam.

[0025] Figure 11 This is a three-dimensional view of the first crossbeam.

[0026] Figure 12 is a perspective view of the second cross beam. DETAILED DESCRIPTION

[0027] The utility model will be further explained in connection with the drawings and embodiments:

[0028] Embodiment one: can see Figures 1-7 A centrifugal fire smoke exhaust fan, comprising a centrifugal fan body 1, a motor 2 and a base 4; the centrifugal fan body 1 and the motor 2 are connected by belt 3 transmission, and the motor 2 is located outside the centrifugal fan body 1.

[0029] Can see 8-9, specifically, the base 4 includes two longitudinal beams 4-1, two first cross beams 4-2 and two second cross beams 4-3; the two longitudinal beams 4-1 are parallel and spaced apart; the two first cross beams 4-2 are parallel and spaced apart; the two second cross beams 4-3 are parallel and spaced apart; the two ends of the two first cross beams 4-2 are respectively detachably fixedly connected with the two longitudinal beams 4-1; the two ends of the two second cross beams 4-3 are respectively detachably fixedly connected with the two longitudinal beams 4-1; can see 1-7, the bottom surface of the centrifugal fan body 1 is detachably fixedly connected with the two longitudinal beams 4-1, and the two side walls thereof are respectively detachably fixedly connected with the two first cross beams 4-2; the motor 2 is detachably fixedly installed on the two second cross beams 4-3.

[0030] Since the motor 2 is detachably fixed on the base 4, the centrifugal fan body 1 is detachably fixed on the base 4, and the base 4 itself is also detachable, the two longitudinal beams 4-1, the two first cross beams 4-2 and the two second cross beams 4-3 of the base 4 can be disassembled and transported, and on-site assembly is realized, especially for large fans, thereby solving the problem that the centrifugal fan body and the base of the existing centrifugal fire smoke exhaust fan cannot be disassembled, the base cannot be disassembled as a whole, and the centrifugal fire smoke exhaust fan is inconvenient to transport, and cannot enter when the installation inlet is narrow.

[0031] Therefore, the embodiment can be applied to large-size products by detachable centrifugal fan body, motor and base, and detachable base, which can realize on-site assembly from narrow door and convenient transportation.

[0032] In addition, since the bottom surface of the centrifugal fan body 1 is detachably fixedly connected with the two longitudinal beams 4-1, and the two side walls thereof are detachably fixedly connected with the two first cross beams 4-2, the two side walls of the centrifugal fan body 1 are blocked and symmetrically clamped and constrained by the two longitudinal beams 4-1, so that the centrifugal fan body 1 can be prevented from loosening, the asymmetric vibration during the operation of the fan can be effectively offset, the overall stability is improved, and the influence of resonance on the service life of the equipment can be reduced.

[0033] Since the two first cross beams 4-2 are detachably fixedly connected with the centrifugal fan body 1 and the two longitudinal beams 4-1, the two first cross beams 4-2 increase the connection strength between the two longitudinal beams 4-1 of the base 4 and the connection strength between the centrifugal fan body 1 and the base 4, the design is ingenious, the layout is very reasonable, and the effect of combined reinforcement can be achieved.

[0034] Embodiment two: the embodiment is same as that in embodiment one, except that:

[0035] Referring to 8-9, in the embodiment, the first cross beam 4-2 is fixedly connected with the longitudinal beam 4-1 through a first bolt and nut M-1. Specifically, the first bolt and nut M-1 comprises a first bolt and a first nut.

[0036] Referring to 8-9, in the embodiment, the second cross beam 4-3 is fixedly connected with the longitudinal beam 4-1 through a second bolt and nut M-2. Specifically, the second bolt and nut M-2 comprises a second bolt and a second nut.

[0037] Referring to 8-9, in the embodiment, the motor 2 is fixedly connected with the second cross beam 4-3 through a third bolt and nut M-3. Specifically, the first bolt and nut M-3 comprises a third bolt and a third nut.

[0038] Referring to 8-9, in the embodiment, the first cross beam 4-2 is fixedly connected with the side wall of the centrifugal fan body 1 through a fourth bolt M-4.

[0039] Referring to 8-9, in the embodiment, the bottom surface of the centrifugal fan body 1 is fixedly connected with the longitudinal beam 4-1 through a fifth bolt M-5.

[0040] Referring to Figure 11 Specifically, the first cross beam 4-2 is provided with a first longitudinal beam connecting hole 4-21 at each end thereof, and is provided with three centrifugal fan body side connecting holes 4-22 in the middle portion thereof.

[0041] Referring to Figure 12Specifically, the second transverse beam 4-3 is provided with second longitudinal beam connecting holes 4-31 at both ends thereof; and the second transverse beam 4-3 is provided with motor connecting holes 4-32 at the middle portion thereof.

[0042] Referring to Figure 10 Specifically, the longitudinal beam 4-1 is provided with first transverse beam connecting holes 4-11, centrifugal fan body bottom connecting holes 4-12 and second transverse beam connecting holes 4-13.

[0043] Referring to Figure 2 Specifically, the sidewall of the centrifugal fan body 1 is provided with a side threaded hole 1-1, and the bottom surface of the centrifugal fan body 1 is provided with a bottom threaded hole 1-2.

[0044] Specifically, the longitudinal beam 4-1, the first transverse beam 4-2 and the second transverse beam 4-3 are made of U-shaped steel.

[0045] Referring to Figures 1-3 and Figures 8-9 In assembly, the screw rod of the first bolt is locked by being connected with the first nut after passing through the first longitudinal beam connecting hole 4-21 of the first transverse beam 4-2 and the first transverse beam connecting hole 4-11 of the longitudinal beam 4-1.

[0046] Referring to Figures 1-3 and Figures 8-9 In assembly, the screw rod of the second bolt is locked by being connected with the second nut after passing through the second longitudinal beam connecting hole 4-31 of the second transverse beam 4-3 and the second transverse beam connecting hole 4-13 of the longitudinal beam 4-1.

[0047] Referring to Figures 1-3 and Figures 8-9 In assembly, the screw rod of the third bolt is locked by being connected with the third nut after passing through the mounting hole 2-11 of the motor base 2-1 and the motor connecting hole 4-32 of the second transverse beam 4-3.

[0048] Referring to Figures 1-3 and Figures 8-9 In assembly, the fourth bolt M-4 is locked by being connected with the side threaded hole 1-1 of the centrifugal fan body 1 after passing through the centrifugal fan body side connecting hole 4-22 of the first transverse beam 4-2.

[0049] Referring to Figures 1-3 and Figures 8-9 In assembly, the fifth bolt M-5 is locked by being connected with the bottom threaded hole 1-2 of the centrifugal fan body 1 after passing through the centrifugal fan body bottom connecting hole 4-12 of the longitudinal beam 4-1.

[0050] Embodiment Three: The embodiment is basically the same as Embodiment One or Two, except that:

[0051] Further, the bottom surface of the centrifugal fan body 1 and the longitudinal beam 4-1 are further positioned by the positioning pin 4-14.

[0052] Please refer to Figures 8-10 Specifically, the positioning pin 4-14 is fixed on the longitudinal beam 4-1, and the bottom surface of the centrifugal fan body 1 is provided with a positioning hole (not shown in the figure) matched with the positioning pin 4-14. During assembly, the bottom surface of the centrifugal fan body 1 and the longitudinal beam 4-1 are first positioned by the positioning pin, and then can be quickly and accurately assembled, so as to improve the assembly efficiency. The preferred specific embodiments of the present application are described in detail above. It should be understood that those skilled in the art can make many modifications and changes without creative labor according to the concept of the present application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment on the basis of the existing technology according to the concept of the present application shall be within the protection scope determined by the claims.

Claims

1. A centrifugal fire smoke exhaust fan, comprising a centrifugal fan body (1), a motor (2) and a base (4); the centrifugal fan body (1) and the motor (2) are drivingly connected through a belt (3), and the motor (2) is located outside the centrifugal fan body (1); characterized in that: the base (4) comprises two longitudinal beams (4-1), two first cross beams (4-2) and two second cross beams (4-3); the two longitudinal beams (4-1) are distributed in parallel and at intervals; the two first cross beams (4-2) are distributed in parallel and at intervals; the two second cross beams (4-3) are distributed in parallel and at intervals; the two ends of the two first cross beams (4-2) are respectively detachably fixedly connected with the two longitudinal beams (4-1); the two ends of the two second cross beams (4-3) are respectively detachably fixedly connected with the two longitudinal beams (4-1); the bottom surface of the centrifugal fan body (1) is detachably fixedly connected with the two longitudinal beams (4-1), and the two side walls thereof are respectively detachably fixedly connected with the two first cross beams (4-2); the motor (2) is detachably fixedly installed on the two second cross beams (4-3).

2. A centrifugal fire service exhaust fan as defined in claim 1 wherein: The first cross beam (4-2) and the longitudinal beam (4-1) are fixedly connected through a first bolt nut (M-1).

3. A centrifugal fire service exhaust fan as defined in claim 1 wherein: The second cross beam (4-3) and the longitudinal beam (4-1) are fixedly connected through a second bolt nut (M-2).

4. A centrifugal fire service exhaust fan as set forth in Claim 1 wherein: The motor (2) and the second cross beam (4-3) are fixedly connected through a third bolt nut (M-3).

5. A centrifugal fire service exhaust fan as set forth in Claim 1 wherein: The first cross beam (4-2) and the side wall of the centrifugal fan body (1) are fixedly connected through a fourth bolt (M-4).

6. A centrifugal fire service exhaust fan as set forth in Claim 1 wherein: The bottom surface of the centrifugal fan body (1) and the longitudinal beam (4-1) are fixedly connected through a fifth bolt (M-5).

7. A centrifugal fire smoke extraction fan as claimed in any one of claims 1 to 6, characterised in that: The two ends of the first cross beam (4-2) are respectively provided with first longitudinal beam connecting holes (4-21); the middle part of the first cross beam (4-2) is provided with a plurality of centrifugal fan body side connecting holes (4-22); the two ends of the second cross beam (4-3) are respectively provided with second longitudinal beam connecting holes (4-31); the middle part of the second cross beam (4-3) is provided with two motor connecting holes (4-32); the longitudinal beam (4-1) is provided with two first cross beam connecting holes (4-11), a plurality of centrifugal fan body bottom connecting holes (4-12) and two second cross beam connecting holes (4-13).

8. A centrifugal fire service exhaust fan as set forth in Claim 1 wherein: The bottom surface of the centrifugal fan body (1) and the longitudinal beam (4-1) are further positioned through a positioning pin (4-14).

9. A centrifugal fire service exhaust fan as set forth in Claim 1 wherein: The longitudinal beam (4-1), the first cross beam (4-2) and the second cross beam (4-3) are made of U-shaped steel.

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