CN111608932B

CN111608932B - Explosion-proof type axial flow special fan with good protection performance and convenient installation

Info

Publication number: CN111608932B
Application number: CN202010425006.9A
Authority: CN
Inventors: 沈余良; 丁金龙
Original assignee: Shanghai De Hui Specific Fan Co ltd
Current assignee: Shanghai De Hui Specific Fan Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2022-06-24
Anticipated expiration: 2040-05-19
Also published as: CN111608932A

Abstract

The invention relates to an explosion-proof type axial flow special fan with good protection and convenient installation, which comprises a fan shell, wherein an impeller and a driving motor are arranged in the fan shell; the middle body is arranged in the cylinder body, the middle body is provided with a plurality of shaft holes, the support shaft structure further comprises at least three support shafts, the support shafts are arranged in the shaft holes in a sliding mode, two ends of each support shaft are located on two sides of the middle body respectively, the support shafts are arranged at intervals along the axial direction of the middle body, and projections of the support shafts on the longitudinal section of the cylinder body are staggered; the barrel is provided with through holes for the two ends of the supporting shaft to extend out of the barrel, and the length of the lower end of the supporting shaft extending out of the barrel is adjustable. The fan has reasonable structure and takes protection and support into consideration.

Description

Explosion-proof type axial flow special fan with good protection performance and convenient installation

Technical Field

The invention relates to a fan, in particular to an explosion-proof axial flow special fan which is good in protection performance and convenient to install.

Background

The existing long and large tunnel ventilation technology is poor in ventilation effect, high in construction cost and capable of preventing construction, and a tunnel type ventilation system is produced at the right moment. To the construction in long tunnel, in order to reduce ventilation energy consumption and improve the ventilation effect, use tunnel formula ventilation system back, axial fan among the tunnel formula ventilation system can constantly move forward. However, the axial flow fan in the existing tunnel type ventilation system is arranged on a fixed support, and the fan needs to be disassembled, the support is disassembled, the fan and the support are moved, the support is assembled and the fan is assembled when the fan is moved every time, so that a large amount of time and labor cost are consumed when the fan is moved every time.

Disclosure of Invention

The invention aims to solve the technical problem of providing an explosion-proof axial flow special fan which is convenient to install, has good protection performance and is convenient to install and protect.

In order to solve the technical problem, the technical scheme of the invention is as follows: an explosion-proof axial flow special fan with good protection performance and convenient installation comprises a fan shell, wherein an impeller and a driving motor are arranged in the fan shell, support assemblies are arranged at two ends of the fan shell and comprise a cylinder body, and the cylinder body is fixedly connected with the fan shell; the middle body is arranged in the cylinder body, a plurality of shaft holes are formed in the middle body, the middle body further comprises at least three support shafts, included angles exist between the support shafts and a horizontal line, the support shafts are arranged in the shaft holes in a sliding mode, two ends of each support shaft are located on two sides of the middle body respectively, the support shafts are arranged at intervals along the axial direction of the middle body, and projections of the support shafts on the longitudinal section of the cylinder body are staggered; the barrel is provided with a through hole for the two ends of the supporting shaft to extend out of the barrel, at least the lower end of the supporting shaft penetrates through the through hole and extends towards the outer side of the barrel, and the lower end of the supporting shaft extends out of the barrel and is adjustable in length.

As a preferred technical scheme, a plurality of protection shafts are further arranged on the middle body, and the length of each protection shaft is smaller than the inner diameter of the cylinder body.

As a preferable technical scheme, the support shaft comprises two end covers, the end covers comprise a fixing shaft and a limiting shaft which are coaxially arranged, and the outer diameter of the fixing shaft is smaller than that of the limiting shaft; the fixing shaft penetrates through the through hole and extends into the cylinder body, a counter bore is arranged in the fixing shaft, a threaded hole is arranged in the limiting shaft, the counter bore is communicated with the threaded hole, and the inner diameter of the counter bore is larger than that of the threaded hole; an outer shell is arranged between the two end covers, and two ends of the outer shell are fixedly connected with the two fixed shafts respectively; the upper end of the inner shaft penetrates through the threaded hole and the counter bore in the end cover located below and then extends into the outer shell; a limiting block is arranged at the upper end of the inner shaft, and a spring is arranged between the limiting block and the end face of the limiting shaft; the device also comprises an adjusting device for adjusting the length of the inner shaft extending out of the cylinder.

As a preferred technical scheme, the adjusting device comprises an adjusting screw, the adjusting screw penetrates from the upper end of the outer shell and is screwed with the threaded hole in the end cover above the adjusting screw.

As a preferred technical scheme, a cushion pad is arranged between the adjusting screw and the limiting block, and the cushion pad is a rubber pad.

As a preferable technical scheme, an adjusting handle is fixed at the upper end of the adjusting screw rod.

According to the preferable technical scheme, one end, facing the fan shell, of the cylinder body is provided with a first connecting flange, two ends of the fan shell are respectively provided with a second connecting flange, and the first connecting flange is connected with the second connecting flange through a buffering assembly.

As a preferred technical scheme, the buffer assembly comprises two flange disc bodies, each flange disc body comprises an inner ring part and an outer ring part, the inner ring part and the outer ring part are connected through a middle ring part, and the middle ring part is in a horn shape; two the interior ring portion is hugged closely, outer ring portion is equipped with the bolt hole, will through the bolt first flange, two flange disk body with the second flange is even fixed.

According to a preferable technical scheme, a V-shaped annular space is formed between the two middle ring parts, rubber is filled in the annular space, and the rubber is vulcanized and bonded with the middle ring parts.

Preferably, the rubber sealing ring further comprises a support ring, and the support ring is embedded in the rubber.

By adopting the technical scheme, the special fan is provided with the support shaft, the support shaft is not only positioned in the barrel, but also extends out of the barrel at the lower end of the support shaft and supports the barrel, the length of the support shaft extending out of the barrel is adjustable, the support shaft can be conveniently adjusted according to the ground of the environment where the fan is positioned, and the fan can be better installed. The supporting shaft in the barrel forms a shelter, and nearby constructors and the internal structure of the fan can be protected. The special fan has reasonable structure and takes protection and support functions into consideration.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of a first embodiment of a bracket assembly;

FIG. 3 is a schematic view of the relative positions of the central support shaft and the central body;

FIG. 4 is a schematic view of a structure of the middle body provided with a protective shaft;

FIG. 5 is a schematic view of the support shaft;

FIG. 6 is a schematic structural view of an end cap;

FIG. 7 is a schematic structural view of a second embodiment of a stent assembly;

fig. 8 is a schematic structural view of a cushion assembly.

Detailed Description

As shown in fig. 1, the explosion-proof type axial flow special fan with good protection performance and convenient installation comprises a fan shell 1, wherein an impeller 3 and a driving motor 2 are arranged in the fan shell 1, and support assemblies 5 are arranged at two ends of the fan shell 1. As shown in fig. 1, 2 and 3, the bracket assembly 5 includes a cylinder 51, and the cylinder 51 is fixedly connected with the fan casing 1; the middle body 52 is arranged in the cylinder body 51, the middle body 52 is provided with a plurality of shaft holes, the multifunctional electric heating furnace further comprises at least three support shafts 53, included angles exist between the support shafts 53 and the horizontal line, the support shafts 53 are arranged in the shaft holes in a sliding mode, two ends of each support shaft 53 are located on two sides of the middle body 52 respectively, the support shafts 53 are arranged along the axial direction of the middle body 52 at intervals, and projections of the support shafts 53 on the longitudinal section of the cylinder body 51 are staggered; the cylinder 51 is provided with a through hole for extending two ends of the support shaft 53 out of the cylinder 51, at least the lower end of the support shaft 53 passes through the through hole and extends towards the outer side of the cylinder 51, and the length of the lower end of the support shaft 53 extending out of the cylinder 51 is adjustable.

As shown in fig. 2, the portions of the support shafts 53 in the cylinder 51 are staggered with each other, and form a shield at both ends of the fan case 1, thereby achieving a protective effect. Preferably, the intermediate body 52 is further provided with a plurality of guard shafts 54, and the length of the guard shafts 54 is smaller than the inner diameter of the cylinder body 51. The number of the protection shafts 54 can be set according to the requirement, and the protection shafts 54 can be used for filling the space between the support shafts 53 to achieve the best protection effect.

The part that the back shaft 53 is in barrel 51 downside plays the effect of supporting legs, because the back shaft 53 stretches out the adjustable length of barrel 51, therefore adjusts the overhanging length of back shaft 53, adaptable different ground environment, compares prior art, and the undulation on adaptation ground that this application can be better, and the fixed mounting of the fan of being convenient for.

When the support shaft 53 is a smooth rod, as shown in fig. 2 and 3, an external thread may be provided at the lower end of the support shaft 53, and the support base may be screwed on the external thread to support the cylinder 1.

The upper end of the supporting shaft 53 can be positioned in the cylinder body 1 and can also extend out of the cylinder body 51, and the cylinder body 51 is provided with a corresponding through hole. Whether the upper end of the support shaft 53 protrudes out of the cylinder 1 depends on its own length and the length of the lower end thereof protruding out of the cylinder 1.

Most preferably, as shown in fig. 5, 6 and 7, the support shaft 53 includes two end caps 533, the end caps 533 include a fixing shaft 5333 and a position-limiting shaft 5331 coaxially disposed, and an outer diameter of the fixing shaft 5333 is smaller than an outer diameter of the position-limiting shaft 5331; the fixing shaft 5333 penetrates through the through hole and extends into the cylinder body 51, a counter bore 5334 is arranged in the fixing shaft 5333, a threaded hole 5332 is arranged in the limiting shaft 5331, the counter bore 5334 is communicated with the threaded hole 5332, and the inner diameter of the counter bore 5334 is larger than that of the threaded hole 5332. An outer shell 539 is arranged between the two end covers 533, and two ends of the outer shell 539 are fixedly connected with two fixed shafts 5333 respectively; specifically, the outer shell 539 snaps into the counterbore 5334. The end cap 533 is in interference fit with the through hole and is clamped with the cylinder body 51, when assembling, the shell 539 is firstly arranged at a preset position in the cylinder body 1, namely, the two ends of the shell correspond to the through hole, then the end cap 533 at one side is arranged in the through hole, and the shell 539 is also clamped in the counter bore 5334 when the end cap 533 is arranged in the through hole; the other end cap 533 is then attached, and the two end caps 533 secure the shell 539 to the barrel 51.

The inner shaft 538 is further included, in order to facilitate assembly and achieve the universality of the end cover 533, the outer diameter of the inner shaft 538 is smaller than the inner diameter of the threaded hole 5332, and the upper end of the inner shaft 538 penetrates through the threaded hole 5332 and the counter bore 5334 on the end cover 533 located below and then extends into the outer shell 539; the upper end of the inner shaft 538 is provided with a stopper 535, and a spring 536 is arranged between the stopper 535 and the end surface of the stopper shaft 5331.

An adjustment means is included to adjust the length of the outer shaft 538 of the barrel 51. The adjusting device includes an adjusting screw 531, the adjusting screw 531 penetrates from the upper end of the outer shell 539, and the adjusting screw 531 is screwed with a threaded hole 5332 on the end cap 533 located above. The length of the adjusting screw 531 extending into the outer shell 539 is controlled, so that the extending length of the inner shaft 538 can be adjusted. Since the adjusting end of the adjusting screw 531 is located at the upper side of the cylinder 51, the adjusting operation is facilitated.

Preferably, a cushion 534 is disposed between the adjusting screw 531 and the stopper 535, and the cushion 534 is a rubber pad. An adjusting handle 532 is fixed to the upper end of the adjusting screw 531. The buffer cushion 534 can buffer the vibration of the outside and the fan, reduce the noise and prolong the service life of the equipment.

As shown in fig. 1, a first connecting flange 511 is arranged at one end of the cylinder 51 facing the fan casing 1, second connecting flanges 11 are respectively arranged at two ends of the fan casing 1, and the first connecting flange 511 and the second connecting flange 11 are connected 4 through a buffer component.

As shown in fig. 8, the buffer assembly 4 includes two flange plates, each of the flange plates includes an inner ring portion 41 and an outer ring portion 43, the inner ring portion 41 and the outer ring portion 43 are connected by a middle ring portion 42, and the middle ring portion 42 is in a horn shape; the two inner ring parts 41 are tightly attached, the outer ring part 43 is provided with bolt holes, and the first connecting flange 511, the two flange plate bodies and the second connecting flange 11 are connected and fixed through bolts. The flange plate body of the structure has certain deformation quantity, and can isolate the vibration generated by the fan.

Preferably, a V-shaped annular space is formed between the two intermediate ring portions 42, and the rubber 44 is filled in the annular space and the rubber 44 is vulcanized and bonded to the intermediate ring portions 42. The rubber 44 has good vibration buffering effect, and the rubber 44 is arranged between the two flange plate bodies, so that the vibration buffering effect can be improved. A support ring 45 is also included, the support ring 45 being embedded within the rubber 44.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a protection nature is good and explosion-proof type axial compressor special fan convenient to installation, includes the fan shell, be equipped with impeller and driving motor in the fan shell, its characterized in that: the fan shell is characterized in that support assemblies are arranged at two ends of the fan shell and comprise a cylinder body, and the cylinder body is fixedly connected with the fan shell; the middle body is arranged in the cylinder body, a plurality of shaft holes are formed in the middle body, the middle body further comprises at least three support shafts, included angles exist between the support shafts and a horizontal line, the support shafts are arranged in the shaft holes in a sliding mode, two ends of each support shaft are located on two sides of the middle body respectively, the support shafts are arranged at intervals along the axial direction of the middle body, and projections of the support shafts on the longitudinal section of the cylinder body are staggered; the barrel is provided with a through hole for the two ends of the supporting shaft to extend out of the barrel, and the length of the lower end of the supporting shaft extending out of the barrel is adjustable;

the supporting shaft comprises two end covers, each end cover comprises a fixing shaft and a limiting shaft which are coaxially arranged, and the outer diameter of each fixing shaft is smaller than that of each limiting shaft; the fixing shaft penetrates through the through hole and extends into the cylinder body, a counter bore is arranged in the fixing shaft, a threaded hole is arranged in the limiting shaft, the counter bore is communicated with the threaded hole, and the inner diameter of the counter bore is larger than that of the threaded hole; an outer shell is arranged between the two end covers, and two ends of the outer shell are fixedly connected with the two fixed shafts respectively; the upper end of the inner shaft penetrates through the threaded hole and the counter bore in the end cover located below and then extends into the outer shell; a limiting block is arranged at the upper end of the inner shaft, and a spring is arranged between the limiting block and the end face of the limiting shaft; the device also comprises an adjusting device for adjusting the length of the inner shaft extending out of the cylinder.

2. The explosion-proof axial flow special fan with good protection performance and convenient installation as claimed in claim 1, is characterized in that: the intermediate body is also provided with a plurality of protection shafts, and the length of each protection shaft is smaller than the inner diameter of the cylinder body.

3. The explosion-proof axial flow special fan with good protection performance and convenient installation as claimed in claim 1, is characterized in that: the adjusting device comprises an adjusting screw rod which penetrates from the upper end of the outer shell and is screwed with the threaded hole in the end cover above the adjusting screw rod.

4. The explosion-proof axial flow special fan with good protection and convenient installation as claimed in claim 3, wherein: the adjusting screw with be equipped with the blotter between the stopper, the blotter is the rubber pad.

5. The explosion-proof axial flow special fan with good protection and convenient installation as claimed in claim 3, wherein: and an adjusting handle is fixed at the upper end of the adjusting screw rod.

6. An explosion-proof axial flow special fan with good protection and convenient installation as claimed in any one of claims 1 to 4, wherein: the barrel is equipped with first flange towards the one end of fan shell, the both ends of fan shell are equallyd divide and are equipped with second flange respectively, first flange with connect through the buffer unit between the second flange.

7. The explosion-proof axial flow special fan with good protection performance and convenient installation as claimed in claim 6, is characterized in that: the buffer assembly comprises two flange disc bodies, each flange disc body comprises an inner ring portion and an outer ring portion, the inner ring portions are connected with the outer ring portions through middle ring portions, and the middle ring portions are horn-shaped; two the interior ring portion is hugged closely, outer ring portion is equipped with the bolt hole, will through the bolt first flange, two flange disk body with the second flange is even fixed.

8. The explosion-proof axial flow special fan with good protection performance and convenient installation as claimed in claim 7, is characterized in that: and a V-shaped annular space is formed between the two middle ring parts, and rubber is filled in the annular space and is vulcanized and bonded with the middle ring parts.

9. The explosion-proof axial flow special fan with good protection performance and convenient installation as claimed in claim 8, is characterized in that: the rubber support further comprises a support ring, and the support ring is embedded in the rubber.