CN111120375A

CN111120375A - Pipeline air volume adjusting device

Info

Publication number: CN111120375A
Application number: CN201911394334.0A
Authority: CN
Inventors: 郁春辉; 何翠红; 王海鹰
Original assignee: Shanghai General Fan Co Ltd
Current assignee: Shanghai General Fan Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-05-08

Abstract

The invention relates to a pipeline air quantity adjusting device which comprises an upper panel, a lower panel, a conical cylinder and a cylindrical supporting rod, wherein the upper panel is arranged on the upper panel; more than three support rods are arranged, are fixed on the upper panel and the lower panel and are uniformly arranged around the conical cylinder; the top of the conical cylinder is opened and fixed with a panel, the middle of the panel is opened and fixed with an installation base, the installation base is provided with a worm wheel screw rod lifter, the worm wheel screw rod lifter comprises a worm wheel and a screw rod which are connected through a gear, the upper end of the screw rod is fixed on the upper panel, the lower end of the screw rod extends into the conical cylinder, the screw rod is provided with a worm wheel, and one end of the worm wheel is connected with a motor; the installation base is provided with roller brackets with the same number as the support rods, the roller brackets are provided with rollers, the rollers move up and down along the support rods, the lower panel is provided with a large hole, and the lower part of the conical cylinder body moves up and down in the large hole under the driving of a motor. The invention can accurately adjust the inner area of the air inlet and outlet pipeline of the fan, and has convenient operation and safe operation.

Description

Pipeline air volume adjusting device

Technical Field

The invention belongs to the field of air volume adjusting devices, and particularly relates to a pipeline air volume adjusting device.

Background

In the existing fan performance test process, the regulation of the ventilation area of the pipeline is controlled by a regular flat plate blocking mode at an inlet section manually for a long time, and the problems are solved, such as inaccurate regulation of the area in the pipeline of the fan, overlarge starting power and current of the fan, high labor intensity, low safety of operation and the like.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a pipeline air quantity adjusting device to solve the problems of inaccurate adjustment of the inner area of a fan pipeline, high labor intensity, operation safety and the like in the existing test. The invention has the characteristics of accurate adjustment of the inner area of the fan pipeline, low power, low current starting of the fan, convenient operation and safe operation.

The technical scheme for solving the technical problems is as follows: a pipeline air volume adjusting device comprises an upper panel, a lower panel, a conical cylinder and a cylindrical support rod; more than three support rods are arranged, are fixed on the upper panel and the lower panel and are uniformly arranged around the conical cylinder; the top of the conical cylinder is opened and fixed with a panel, the middle of the panel is provided with a hole and fixed with a mounting base, the mounting base is provided with a worm gear lead screw lifter, the worm gear lead screw lifter comprises a worm gear and a lead screw which are connected through a gear, the upper end of the lead screw is fixed on the upper panel, the lower end of the lead screw extends into the conical cylinder, the lead screw is provided with a worm gear, one end of the worm gear is connected with a motor, and the motor is fixed on the panel; the panel is provided with roller wheel brackets with the same number as the support rods, the roller wheel brackets are provided with roller wheels, and the roller wheels move up and down along the support rods; the lower panel is provided with a large hole, and the lower part of the conical cylinder body is driven by the motor to move up and down in the large hole.

The invention is further set that the conical cylinder comprises an outer cone and an inner cylinder, the lower end of the screw rod extends into the inner cylinder, the outer cone is a mesh plate, and silencing cotton is filled between the outer cone and the inner cylinder.

The invention is further provided that the tip part of the outer cone is fixedly covered with a cold plate.

The invention is further arranged in that a reinforcing rod is connected between the outer cone and the inner cylinder.

The invention is further provided that a first limit switch is fixed at the lower part of the supporting rod, and the conical cylinder moves downwards until the conical cylinder touches the first limit switch.

The invention is further provided that a limiting plate is fixed on one side of the panel, a second limiting switch is fixed on the upper part of the supporting rod, and the conical cylinder body moves upwards until the limiting plate touches the second limiting switch.

The invention is further provided that a rubber sealing plate is fixed on the lower panel near the large hole, and the inner side surface of the rubber sealing plate has the same inclination with the outer side surface of the conical cylinder.

The invention is further provided that the ends of the support rods are locked to the upper and lower panels by nuts.

The invention is further provided that a flange is fixed on the upper panel, and a small hole for fixing the upper end of the screw rod is arranged in the middle of the flange.

The invention is further arranged in that the roller bracket comprises two parallel side plates, mounting holes are formed in the side plates, rotating shafts are arranged through the mounting holes, the rollers are arranged on the rotating shafts on the inner sides of the side plates, bearings are arranged between the rotating shafts and the rollers, and nuts are screwed on the rotating shafts on the outer sides of the side plates and fixed on the side plates.

The invention is further provided that the outer side surface of the roller is V-shaped or U-shaped and can be clamped on the supporting rod.

In conclusion, the invention has the following beneficial effects:

(1) the invention can effectively improve the regulation effect of the air quantity of the pipeline and simultaneously reduce the problem of overlarge applicable power caused by overlarge air resistance when the pipeline is opened and closed.

(2) Set up the rubber seal board, can increase the leakproofness, prevent that the interior gas of pipeline from spilling over, its uncomplicated structure and simple operation.

(3) Set up first limit switch and second limit switch, can accurate restriction stroke range.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a side panel;

FIG. 3 is a schematic view showing a connection structure of the roller and the roller bracket;

FIG. 4 is a schematic structural view of a roller;

fig. 5 is a schematic structural view of the mounting base.

Wherein, 1, an upper panel; 2. a lower panel; 3. a nut; 4. a support bar; 5. a roller; 6. a roller bracket; 7. installing a base; 8. a panel; 9. a worm screw hoist; 10. a motor; 11. a rubber sealing plate; 12. a first limit switch; 13. a second limit switch; 14. a limiting plate; 15. a screw rod; 16. macropores; 17. a flange plate; 18. an outer cone; 19. an inner cylinder; 20. silencing cotton; 21. a cold plate; 22. a reinforcing bar; 23. a side plate; 24. mounting holes; 25. a rotating shaft; 26. a bearing; 27. a through hole; 28. and (4) a notch.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a pipeline air volume adjusting device which is applied to air volume adjustment, for example, adjustment of ventilation area of a fan pipeline in a fan performance test. Referring to fig. 1, the duct air volume adjusting device includes an upper panel 1, a lower panel 2, a conical cylinder and a cylindrical support rod 4. The bracing piece 4 has more than three, all fixes on top panel 1 and lower panel 2, has 4 in fig. 1, and accessible nut 3 is fixed to evenly set up around the cone. The top opening of toper barrel is fixed with panel 8, open porosely and be fixed with installation base 7 in the middle of the panel 8, worm wheel lead screw lift 9 is equipped with on the installation base 7, worm wheel lead screw lift 9 includes worm wheel and lead screw 15 through gear connection, the upper end of lead screw 15 is fixed on top panel 1, the lower extreme of lead screw 15 stretches into in the toper barrel, the worm wheel is equipped with on the lead screw 15, motor 10 is being connected to the one end of worm wheel, motor 10 fixes on the motor cushion, there is the screw on the motor cushion, the motor cushion is fixed on the panel 8 of toper barrel main aspects, starter motor 10 drives turbine lead screw lift 9 and relies on gyro wheel 5 can form the effect of reciprocating. The roller bracket 6 with the same number with the support rod 4 is arranged on the panel 8, the roller 5 is arranged on the roller bracket 6, and the roller 5 moves up and down along the support rod 4. The lower panel 2 is provided with a big hole 16, and the lower part of the conical cylinder body moves up and down in the big hole 16 under the driving of the motor 10. The invention can effectively improve the regulation effect of the air quantity of the pipeline and simultaneously reduce the problem of overlarge applicable power caused by overlarge air resistance when the pipeline is opened and closed.

As one implementation mode, the conical cylinder is a sealed cylinder, but the air inlet has larger noise on the cylinder. As another preferred choice, the cone-shaped cylinder body includes outer cone 18 and interior barrel 19, and the lower extreme of lead screw 15 stretches into in the barrel 19, and outer cone 18 is the mesh board, and it has amortization cotton 20 to fill between outer cone 18 and the interior barrel 19, and amortization cotton 20 and mesh board can the greatly reduced noise, and interior barrel 19 sets up to be hollow, can lighten weight on the one hand, and on the other hand saves materials, and on the other hand provides flexible space for lead screw 15.

As the air and dust are abraded when the gas comes, the tip part of the outer cone 18 covers the fixed cold plate 21, so that the thickening and reinforcing effects are achieved.

In order to further increase the positioning and supporting functions between the outer cone 18 and the inner cylinder 19, a reinforcing rod 22, such as round steel or flat steel, is connected between the outer cone 18 and the inner cylinder 19, and the reinforcing rod 22 is not limited in direction, and may be connected horizontally or obliquely.

Referring to fig. 2 and 3, the roller bracket 6 includes two parallel side plates 23, a mounting hole 24 is formed on each side plate 23, a rotating shaft 25 is installed through the mounting hole 24, the roller 5 is installed on the rotating shaft 25 on the inner side of the side plate 23, a bearing 26 is installed between the rotating shaft 25 and the roller 5, and a nut is screwed on the rotating shaft 25 on the outer side of the side plate 23 and fixed on the side plate 23. Referring to fig. 4, the outer side surface of the roller 5 is in a V shape or a U shape which can be clamped on the support rod 4, and can guide and limit.

A first limit switch 12 is fixed at the lower part of the support rod 4, and the conical cylinder body moves downwards until contacting the first limit switch 12. The first limit switch 12 limits the maximum limit of downward movement of the cone.

A limiting plate 14 is fixed on one side of the panel, a second limiting switch 13 is fixed on the upper portion of the supporting rod 4, and the conical cylinder moves upwards until the limiting plate 14 touches the second limiting switch 13. The second limit switch 13 limits the maximum limit of upward movement of the cone. When the first limit switch 12 and the second limit switch 13 are used in a matched mode, the stroke range of the conical cylinder is limited.

A rubber sealing plate 11 is fixed on the lower panel 2 near the large hole 16, and the inner side surface of the rubber sealing plate 11 has the same gradient with the outer side surface of the conical cylinder. When the taper cylinder body descends to the lowest position and the pipeline closes the leakproofness problem of back pipeline, the outer wall of taper cylinder body touches the edge of macropore 16, can increase the leakproofness, prevents that gas from spilling over in the pipeline, and its structure is uncomplicated and the simple operation.

Furthermore, a flange 17 is fixed on the upper panel 1, and a small hole for fixing the upper end of the screw rod 15 is formed in the middle of the flange 17.

Referring to fig. 5, the mounting base 7 comprises a small disc at the upper part and a large disc at the lower part, a sleeve is connected in the middle, a through hole 27 for mounting the worm screw elevator 9 is arranged in the middle of the sleeve, and a notch 28 is arranged at the bottom edge of the large disc and is used for pressing on the panel 8.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipeline air volume adjusting device is characterized by comprising an upper panel, a lower panel, a conical cylinder and a cylindrical support rod; more than three support rods are arranged, are fixed on the upper panel and the lower panel and are uniformly arranged around the conical cylinder; the top of the conical cylinder is opened and fixed with a panel, the middle of the panel is provided with a hole and fixed with a mounting base, the mounting base is provided with a worm gear lead screw lifter, the worm gear lead screw lifter comprises a worm gear and a lead screw which are connected through a gear, the upper end of the lead screw is fixed on the upper panel, the lower end of the lead screw extends into the conical cylinder, the lead screw is provided with a worm gear, one end of the worm gear is connected with a motor, and the motor is fixed on the mounting panel; the panel is provided with roller wheel brackets with the same number as the support rods, the roller wheel brackets are provided with roller wheels, and the roller wheels move up and down along the support rods; the lower panel is provided with a large hole, and the lower part of the conical cylinder body is driven by the motor to move up and down in the large hole.

2. The pipe air volume adjusting device according to claim 1, wherein the tapered cylinder comprises an outer cone and an inner cylinder, the lower end of the screw rod extends into the inner cylinder, the outer cone is a mesh plate, and silencing cotton is filled between the outer cone and the inner cylinder.

3. The ducted air conditioning unit of claim 2, wherein the tip portion of the outer cone covers and secures a cold plate.

4. The ducted air volume adjusting apparatus according to claim 2, wherein a reinforcing rod is connected between the outer cone and the inner cylinder.

5. The duct air volume adjusting device of claim 1, wherein a first limit switch is fixed at the lower part of the support rod, and the conical cylinder moves downwards until contacting the first limit switch.

6. The duct air volume adjusting device according to claim 1, wherein a limiting plate is fixed to one side of the panel, a second limiting switch is fixed to the upper portion of the supporting rod, and the tapered cylinder moves upward until the limiting plate touches the second limiting switch.

7. The ducted air volume adjusting apparatus according to claim 1, wherein a rubber sealing plate is fixed to the lower panel in the vicinity of the large hole, and an inner side surface of the rubber sealing plate has the same inclination as an outer side surface of the tapered cylindrical body.

8. The duct air volume adjusting device of claim 1, wherein a flange is fixed on the upper panel, and a small hole for fixing the upper end of the screw rod is arranged in the middle of the flange.

9. The ducted air volume adjusting apparatus according to claim 1, wherein the roller bracket includes two parallel side plates, the side plates are formed with mounting holes through which a rotating shaft is inserted, the roller is mounted on the rotating shaft inside the side plates, a bearing is provided between the rotating shaft and the roller, and the rotating shaft outside the side plates is screwed with a nut and fixed to the side plates.

10. The duct air volume adjusting device according to claim 1 or 7, wherein an outer side surface of the roller is V-shaped or U-shaped to be caught on the support bar.