Anti-deformation telescopic rod of ventilator

Abstract

The utility model belongs to the technical field of centrifugal ventilators, and particularly relates to an anti-deformation telescopic rod of a ventilator, which comprises a steel pipe, round steel, a positioning nut and a limiting part, the steel pipe, the round steel and the limiting part are all arranged in an air inlet of the ventilator, the steel pipe is fixedly arranged in a side plate of an air inlet box, the round steel is movably connected with the steel pipe, and the limiting part is detachably connected with the round steel. One end, far away from the steel pipe, of the round steel is tapped with an external thread matched with the positioning nut, the positioning nut is in threaded connection with the round steel and abuts against the outside of the other side plate of the air inlet box, and the device has the advantages that deformation of the air inlet box of the fan can be adjusted, and the performance of the fan is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans, in particular to an anti-deformation telescopic rod for a fan. Background Art

[0002] The air inlet of the existing large F-type centrifugal fan casing has been severely deformed due to long-term use, resulting in the fan performance failing to meet the initial standards. The current solution is to install a support rod at the air inlet, but the support rod can only provide support for the casing side panels and cannot effectively adjust the deformation of the fan equipment at the air inlet. Utility Model Content

[0003] The utility model aims to solve the above problems and specifically designs a ventilator anti-deformation telescopic rod, which can adjust the deformation of the fan air inlet box and ensure the fan performance.

[0004] To achieve the above-mentioned purpose, the utility model provides an anti-deformation telescopic rod for a ventilator, comprising a steel pipe, a round steel, a positioning nut and a limiting portion, wherein the steel pipe, the round steel and the limiting portion are all arranged inside the air inlet of the fan, the steel pipe is fixedly installed on the inner wall of the side panel of the air intake box, the round steel is movably connected to the steel pipe, the limiting portion is detachably connected to the round steel, the round steel is tapped with an external thread matching the positioning nut, and there are multiple groups of positioning nuts, which are threadedly connected to the round steel and respectively abut the inner and outer walls of the other side panel of the air intake box.

[0005] Preferably, the steel pipe is equipped with a first flange, and is fixedly connected to the air intake box via the first flange.

[0006] Preferably, the limiting portion is a screw nut, the steel pipe is provided with a first through hole, the round steel is provided with multiple groups of second through holes matching the first through hole, and the screw nut is threadedly connected to the first through hole and the second through hole.

[0007] Optionally, the limiting portion is a second flange, the steel pipe is tapped with an internal thread, the round steel is tapped with an external thread matching the internal thread, the round steel thread is connected to the steel pipe, the second flange is sleeved on the outer ring of the round steel, and a group of the positioning nuts are abutted against the inner wall of the side panel of the air intake box through the second flange.

[0008] In summary, the present invention has the following advantages and beneficial technical effects:

[0009] 1. The utility model can fine-tune the side panels of the fan air inlet box with slight deformation by adjusting the positioning nut; if the deformation is large, the feed amount of the round steel and the steel pipe is readjusted, and the deformation at the fan air inlet is effectively adjusted by changing the overall length of the telescopic rod, thereby ensuring the performance of the fan and extending the service life of the equipment.

[0010] 2. The setting of the positioning nut can be fine-tuned without disassembling the fan components, which will not affect the structure and performance of the equipment. At the same time, the adjustment process is quite simple, with high precision and good reliability, saving maintenance time. The setting of the limit part increases the position limit of the round steel, prevents the round steel from excessive movement, ensures the stability of the telescopic rod structure, and improves the reliability of the anti-deformation telescopic rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0012] Figure 1 It is a three-dimensional schematic diagram of the first embodiment of the present utility model;

[0013] Figure 2 This is a diagram of the use state of the first embodiment of the present utility model;

[0014] Figure 3 This is a schematic diagram of the main view of the first embodiment of the present utility model;

[0015] Figure 4 This is a diagram of the use state of the second embodiment of the present utility model;

[0016] Figure 5 It is a front view schematic diagram of the second embodiment of the present utility model.

[0017] The reference numerals in the accompanying drawings are:

[0018] 1. Steel pipe; 2. Round steel; 3. Positioning nut; 4. Limiting part; 5. First flange; 6. Air inlet box; 7. Fan air inlet. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-Figure 5 The utility model is described in further detail:

[0020] Example 1

[0021] like Figure 1-Figure 3As shown, this embodiment discloses a ventilator anti-deformation telescopic rod, including a steel pipe 1, a round steel 2, a positioning nut 3 and a limiting part 4. The steel pipe 1, the round steel 2 and the limiting part 4 are all arranged inside the air inlet 7 of the fan. The steel pipe 1 is fixedly mounted on the inner wall of the side plate of the air intake box 6. One end of the round steel 2 is inserted into the steel pipe 1 and movably connected to the steel pipe 1. The limiting part 4 is detachably connected to the round steel 2. The end of the round steel 2 away from the steel pipe 1 is tapped with an external thread matching the positioning nut 3. There are two groups of positioning nuts 3, which are respectively threadedly connected to the round steel 2 and abut against the inner and outer walls of the other side plate of the air intake box 6; a first flange 5 is welded on the side of the steel pipe 1 away from the insertion of the round steel 2, and the first flange 5 is welded to the inner wall of the side plate of the air intake box 6; the limiting part 4 is a screw nut, and a first through hole is opened in the direction perpendicular to the central axis of the steel pipe 1, and a plurality of groups of second through holes are opened in the round steel 2 matching the first through hole. The screw nuts are threadedly connected to the first through hole and the second through hole in sequence.

[0022] The working principle of the anti-deformation telescopic rod of a ventilator of the utility model is:

[0023] When the side panel of the fan air inlet box 6 produces a slight deformation, the positioning nut 3 in the telescopic rod is fine-tuned based on the feed amount on the round steel 2 to push the side panel of the air inlet box 6 to restore its deformation; when the deformation is large, the screw nut is unscrewed, and the depth of the round steel 2 inserted into the steel pipe 1 is readjusted. After adjusting to a roughly appropriate position, the screw nut is screwed back into the first through hole and the second through hole to limit the overall length of the telescopic rod, and then the positioning nut 3 is used for fine-tuning until the deformation is restored at the fan air inlet 7.

[0024] Example 2

[0025] like Figure 4-Figure 5 As shown, the difference between this embodiment and embodiment 1 is that: the limiting part 4 is a second flange, the steel pipe 1 is tapped with an internal thread, the round steel 2 is tapped with an external thread matching the internal thread, one end of the round steel 2 is threadedly inserted into the steel pipe 1, and the second flange is sleeved on the outer ring of the round steel 2, and abuts against the inner wall of the side plate of the air intake box 6 through a set of positioning nuts 3; when the side plate of the fan air intake box 6 produces a slight deformation, the positioning nut 3 in the telescopic rod is fine-tuned based on the feed amount on the round steel 2, and the second flange is pushed at the same time to restore the deformation of the side plate of the air intake box 6; when the deformation amount is large, the clamping tool is used to apply force to change the thread feed amount of the round steel 2 based on the steel pipe 1, and after the deformation amount of the fan air inlet 7 is preliminarily adjusted, the positioning nut 3 is used to fine-tune it until the fan air inlet 7 is restored to deformation; the remaining technical features are the same.

[0026] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A ventilator anti-deformation telescopic rod, characterized by: It includes a steel pipe, round steel, a positioning nut and a limiting part. The steel pipe, round steel and limiting part are all arranged inside the air inlet of the fan. The steel pipe is fixedly installed on the inner wall of the side plate of the air intake box. The round steel is movably connected to the steel pipe. The limiting part is detachably connected to the round steel. The round steel is tapped with an external thread matching the positioning nut. There are multiple groups of positioning nuts, which are threadedly connected to the round steel and respectively abut the inner and outer walls of the other side plate of the air intake box.

2. The anti-deformation telescopic rod for a ventilator according to claim 1, characterized in that: The steel pipe is additionally provided with a first flange, and is fixedly connected to the air intake box via the first flange.

3. The anti-deformation telescopic rod for a ventilator according to claim 2, characterized in that: The limiting part is a screw nut, the steel pipe is provided with a first through hole, the round steel is provided with multiple groups of second through holes matching the first through holes, and the screw nut is threadedly connected to the first through hole and the second through hole.

4. The anti-deformation telescopic rod for a ventilator according to claim 2, characterized in that: The limiting part is a second flange, the steel pipe is tapped with an internal thread, the round steel is tapped with an external thread matching the internal thread, the round steel is threadedly connected to the steel pipe, the second flange is sleeved on the outer ring of the round steel, and a group of positioning nuts abut against the inner wall of the side plate of the air intake box through the second flange.

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