Adjusting device for flow guide plate of centrifugal fan

Abstract

The utility model belongs to the technical field of centrifugal fans, and relates to a flow guide plate adjusting device of a centrifugal fan. Comprising a fan shell (1), an adjusting device support (2) is arranged outside the fan shell (1), an adjusting rod piece (3) is screwed on the adjusting device support (2), the adjusting rod piece (3) movably penetrates through the fan shell (1) and extends into the fan shell (1), a flow guide plate (4) is arranged in the fan shell (1), and the end, extending into the fan shell (1), of the adjusting rod piece (3) is connected with the flow guide plate (4). The flow guide plate adjusting device of the centrifugal fan is simple in structure, can conveniently and rapidly achieve adjustment of the flow guide plate, effectively meets the adjusting requirement, eliminates the blocking problem caused by dust deposition, can be used for a long time, does not need to be cleaned frequently, does not affect normal operation, ensures reliable adjustment of the flow guide plate, and guarantees steel performance.

Description

TECHNICAL FIELD

[0001] The utility model belongs to centrifugal fan technical field, more specifically, relate to a centrifugal fan flow guide plate adjusting device. BACKGROUND

[0002] High line air cooling roller way wire rod cooling equipment adopts centrifugal fan. The typical problems existing in this equipment are: 1. The air volume adjusting device (flow guide plate) inside the air outlet cylinder of the centrifugal fan is complicated and heavy in structure. The frequent faults caused by the blockage due to dust accumulation consume a lot of time and manpower for troubleshooting, affecting production and increasing production and maintenance costs. 2. The adjusting screw rod for adjusting the angle of the flow guide plate is installed inside the air inlet cylinder. The adjusting screw rod is easily blocked by dust accumulation due to the influence of the operating environment inside the air inlet cylinder, and it is difficult to clean due to the small internal space. 3. The air inlet cylinder needs to be removed and replaced every time maintenance is performed. 4. The maintenance cost is high. 5. The uneven cooling of the wire rod caused by the abnormal flow guide plate affects the performance of the steel.

[0003] In the prior art, there is a technology named "Centrifugal Fan with Flow Guide Plate in Volute" with publication (announcement) number "CN212563813U". This technology discloses a centrifugal fan with a flow guide plate in the volute, which includes an air inlet pipeline with an air inlet; the air inlet pipeline is connected to a flow collector at the end; a impeller assembly is installed between the flow collector and the driving motor; the front end face of the volute is covered with the flow collector, and the rear end face of the volute is covered with the impeller assembly; the inner side of the outer end face of the volute is connected with the flow guide plate. By adding a flow guide plate in the volute, the distribution of flow channel vortices in the volute is changed, thereby reducing the interaction between flow channel vortices and reducing the flow loss of gas in the volute, and improving the efficiency of the fan. This technology does not involve the technical problems and technical solutions of the present application. UTILITY MODEL CONTENTS

[0004] The technical problem to be solved by the utility model is to provide a centrifugal fan flow guide plate adjusting device with simple structure, which can conveniently and quickly adjust the flow guide plate, effectively meet the adjusting requirements, eliminate the blockage problem caused by dust accumulation, can be used for a long time without frequent cleaning, will not affect normal operation, ensure reliable adjustment of the flow guide plate, and protect the performance of the steel.

[0005] To solve the above technical problems, the utility model adopts the technical scheme that:

[0006] The utility model discloses a centrifugal fan flow guide plate adjusting device, which comprises a fan shell, an adjusting device support is arranged outside the fan shell, an adjusting rod is screwed on the adjusting device support, the adjusting rod extends to the inside of the fan shell through the fan shell, a flow guide plate is arranged in the inside of the fan shell, and one end of the adjusting rod extending to the inside of the fan shell is connected with the flow guide plate.

[0007] The adjusting device support is provided with a threaded hole, the adjusting rod is provided with a threaded part, and the threaded part of the adjusting rod is screwed through the threaded hole of the adjusting device support.

[0008] The adjusting device support comprises a body part, a first connecting part and a second connecting part, and the first connecting part and the second connecting part are connected to the body part and the fan housing.

[0009] The body part, the first connecting part and the second connecting part are in an n-shaped structure, and the body part is parallel to the fan housing.

[0010] The body part of the adjusting device support is provided with a threaded hole, and the threaded part of the adjusting rod is screwed through the threaded hole of the body part.

[0011] The threaded parts of the adjusting rods located at the two ends of the body part of the adjusting device support are respectively screwed with lock nuts.

[0012] The centrifugal fan guide vane adjusting device comprises two adjusting device supports, each side of the fan housing is provided with an adjusting device support, each adjusting device support is screwed with an adjusting rod, each adjusting rod is movably arranged through one side of the fan housing and extends into the fan housing, and one end of each adjusting rod extending into the fan housing is connected with a corresponding guide vane.

[0013] The end of the adjusting rod is a square or polygonal end or notch, and the centrifugal fan guide vane adjusting device further comprises an adjusting wrench, and the adjusting wrench is provided with a square or polygonal notch or end.

[0014] The adjusting device support and the adjusting rod are both made of metal material.

[0015] The technical scheme of the utility model has the following working principle and beneficial effects:

[0016] The centrifugal fan flow guide plate adjusting device, when the structure is arranged, the flow guide plate is located inside the fan shell (the fan air inlet cylinder), and the centrifugal fan flow guide plate adjusting device is located outside the fan shell, the adjusting device support is arranged outside the fan shell, the fan shell is fixedly connected with the adjusting device support, the adjusting rod is screwed on the adjusting device support, the adjusting rod can rotate relative to the adjusting device support according to needs, the adjusting rod extends into the fan shell through the fan shell, the flow guide plate is arranged in the fan shell, one end of the adjusting rod extending into the fan shell is connected with the flow guide plate, and the adjusting rod is fixedly connected with the flow guide plate. In this way, the position of the flow guide plate can be changed by rotating the adjusting rod, and reliable adjustment of the air volume can be realized. The adjusting device support and the adjusting rod are located outside the fan shell, so that the threaded hole connection part of the adjusting rod and the adjusting device support is located outside the fan shell, is not affected by the working environment in the air inlet cylinder of the fan shell, and is not blocked by dust, the adjusting rod can be used for a long time, does not need to be cleaned frequently like the prior art, and does not need to be operated in a narrow space in the air inlet cylinder, so that the cleaning difficulty problem does not exist, and the technical defects in the prior art are effectively solved. BRIEF DESCRIPTION OF DRAWINGS

[0017] The content expressed by each drawing of the present specification and the marks in the drawings are briefly described as follows:

[0018] Figure 1 The centrifugal fan flow guide plate adjusting device is a structural schematic view.

[0019] The marks in the drawings are as follows: 1, fan shell; 2, adjusting device support; 3, adjusting rod; 4, flow guide plate; 5, body part; 6, first connecting piece; 7, second connecting piece; 8, locking nut. DETAILED DESCRIPTION

[0020] The shape, structure, mutual position and connection relationship between parts, the action and working principle of each component involved in the specific implementation manner of the present utility model are further described in detail as follows by comparing the drawings and describing the embodiments:

[0021] As shown in the accompanying Figure 1The utility model discloses a centrifugal fan flow guide plate adjusting device, including fan casing 1, the outside of fan casing 1 sets up adjusting device support 2, and the screwing of adjusting rod piece 3 is installed on adjusting device support 2, and adjusting rod piece 3 extends to the inside of fan casing 1 and is passed through fan casing 1, and the inside of fan casing 1 sets up flow guide plate 4, and the one end of adjusting rod piece 3 extends to the inside of fan casing 1 and is connected with flow guide plate 4. The above structure, for the deficiency in the prior art, proposes the technical scheme of improvement. Centrifugal fan is the mature product in the prior art, and the centrifugal fan needs to adjust the air volume through the position change of flow guide plate. For this purpose, the utility model improves the adjusting device of flow guide plate. When setting up the structure, the flow guide plate is located in the inside of fan casing (fan air inlet barrel body), and the centrifugal fan flow guide plate adjusting device is located in the outside of fan casing, and the outside of fan casing 1 sets up adjusting device support 2, and the outside of fan casing 1 is fixedly connected with adjusting device support 2, and the screwing of adjusting rod piece 3 is installed on adjusting device support 2, and adjusting rod piece 3 can rotate according to the need relative to adjusting device support 2, and adjusting rod piece 3 extends to the inside of fan casing 1 and is passed through fan casing 1, and the inside of fan casing 1 sets up flow guide plate 4, and the one end of adjusting rod piece 3 extends to the inside of fan casing 1 and is connected with flow guide plate 4, and adjusting rod piece is fixedly connected with flow guide plate 4. In this way, by rotating adjusting rod piece 3, the position change of flow guide plate 4 can be realized, and reliable air volume adjustment is realized. And adjusting device support 2 and adjusting rod piece 3 are located in the outside of fan casing 1, so that the threaded hole connecting part of adjusting rod piece 3 and adjusting device support 2 is located in the outside of fan casing 1, is not influenced by the working environment in the air inlet barrel body of fan casing 1, and will not be blocked by adjusting rod piece 3 due to dust accumulation, so that adjusting rod piece 3 can be used for a long time, and frequent cleaning is not needed as in the prior art, and the space in the air inlet barrel body is narrow, so that the cleaning difficulty problem does not exist, thereby effectively solving the problems in the prior art. The centrifugal fan flow guide plate adjusting device disclosed by the utility model has the advantages of simple structure, convenient and fast adjustment of flow guide plate, effective satisfaction of adjustment demand, elimination of the blocking problem caused by dust accumulation, long-term use, no frequent cleaning, no influence on normal operation, reliable adjustment of flow guide plate and guarantee of steel performance.

[0022] The adjusting device support 2 is provided with a threaded hole, the adjusting rod piece 3 is provided with a threaded part, and the threaded part of the adjusting rod piece 3 is screwed through the threaded hole of the adjusting device support 2. The threaded part and the threaded rod part are screwed together, the position of the adjusting rod piece 3 relative to the fan casing 1 can be changed, and the position of the flow guide plate 4 in the fan casing 1 can be adjusted.

[0023] The adjusting device support 2 comprises a body part 5, a first connecting part 6 and a second connecting part 7, the first connecting part 6 and the second connecting part 7 are connected to the outside of the fan housing 1. The body part 5, the first connecting part 6 and the second connecting part 7 are in the shape of n, the body part 5 is parallel to the outside of the fan housing 1. The above structure, the body part 5, the first connecting part 6 and the second connecting part 7 are welded, the first connecting part 6 and the second connecting part 7 are welded to the outside of the fan housing, the structure is fixed, and the guide vane 4 can be adjusted by rotating the adjusting rod 3.

[0024] The body part 5 of the adjusting device support 2 is provided with a threaded hole, and the screw rod part of the adjusting rod 3 is screwed through the threaded hole of the body part 5. The screw rod part of the adjusting rod 3 located at both ends of the body part 5 of the adjusting device support 2 is respectively screwed with a locking nut 8. The above structure, when the adjusting rod 3 needs to be adjusted, loosen the two locking nuts 8, after the adjusting rod 3 is adjusted, tighten the two locking nuts 8, each locking nut 8 is attached to one side of the body part 5, and the adjusting rod 3 is reliably locked. In this way, the position of the guide vane 4 located inside the fan housing 1 is fixed.

[0025] The centrifugal fan guide vane adjusting device comprises two, the fan housing 1 is provided with an adjusting device support 2 on each side, the adjusting rod 3 is screwed on each adjusting device support 2, and each adjusting rod 3 is movably arranged through one side of the fan housing 1 to extend into the fan housing 1. Each adjusting rod 3 is connected to the corresponding guide vane 4 at one end extending into the fan housing 1. The above structure, according to the number of guide vanes, the number of centrifugal fan guide vane adjusting devices can be increased, and different adjusting devices are controlled separately and do not interfere with each other, effectively meeting the demand.

[0026] The end of the adjusting rod 3 is a square or polygonal end or notch, and the centrifugal fan guide vane adjusting device further comprises an adjusting wrench, and the adjusting wrench is provided with a square or polygonal notch or end. The above structure, when the adjusting rod needs to be rotated, the adjusting wrench is clamped on the adjusting rod 3, which is convenient and labor-saving to realize the rotation control of the adjusting rod 3.

[0027] The adjusting device support 2 and the adjusting rod 3 are made of metal material. The above structure, the adjusting device support 2 and the adjusting rod 3 have good strength, long service life and low cost.

[0028] The centrifugal fan flow guide plate adjusting device, when the structure is set, the flow guide plate is located inside the fan shell (the fan air inlet barrel), and the centrifugal fan flow guide plate adjusting device is located outside the fan shell, the adjusting device support 2 is arranged outside the fan shell 1, the fan shell 1 is fixedly connected with the adjusting device support 2, the adjusting rod 3 is screwed on the adjusting device support 2, the adjusting rod 3 can rotate relative to the adjusting device support 2 according to needs, the adjusting rod 3 extends into the fan shell 1 through the fan shell 1, the flow guide plate 4 is arranged in the fan shell 1, one end of the adjusting rod 3 extending into the fan shell 1 is connected with the flow guide plate 4, and the adjusting rod is fixedly connected with the flow guide plate 4. In this way, by rotating the adjusting rod 3, the position of the flow guide plate 4 can be changed, and reliable adjustment of air volume can be realized. The adjusting device support 2 and the adjusting rod 3 are located outside the fan shell 1, so that the threaded hole connection part of the adjusting rod 3 and the adjusting device support 2 is located outside the fan shell 1, and is not affected by the working environment in the air inlet barrel of the fan shell 1, so that the adjusting rod 3 is not blocked due to dust accumulation, the adjusting rod 3 can be used for a long time, and does not need to be cleaned frequently as in the prior art, and does not need to be operated in a narrow space in the air inlet barrel, so that the cleaning difficulty problem does not exist, and the technical defects in the prior art are effectively solved.

[0029] The utility model has been described above in conjunction with the drawings, and obviously, the specific implementation of the utility model is not limited by the above mode, as long as various improvements are made by adopting the method concept and technical scheme of the utility model, or the concept and technical scheme of the utility model are directly applied to other occasions without improvement, all of which are within the protection scope of the utility model.

Claims

1. A centrifugal fan guide plate adjustment device, characterized in that: The invention comprises a fan housing (1), an adjusting device bracket (2) is arranged outside the fan housing (1), an adjusting rod (3) is screwed onto the adjusting device bracket (2), the adjusting rod (3) movably passes through the fan housing (1) and extends into the inside of the fan housing (1), a guide plate (4) is arranged inside the fan housing (1), and one end of the adjusting rod (3) extending into the inside of the fan housing (1) is connected to the guide plate (4).

2. The centrifugal fan guide plate adjustment device according to claim 1, characterized in that: The adjusting device bracket (2) is provided with a threaded hole, the adjusting rod (3) is provided with a threaded portion, and the screw portion of the adjusting rod (3) is screwed through the threaded hole of the adjusting device bracket (2).

3. The centrifugal fan guide plate adjustment device according to claim 1 or 2, characterized in that: The regulating device bracket (2) comprises a main body (5), a first connecting member (6) and a second connecting member (7), wherein the first connecting member (6) and the second connecting member (7) are connected to the main body (5) and the outside of the fan housing (1).

4. The centrifugal fan guide plate adjustment device according to claim 3, characterized in that: The main body (5), the first connecting member (6) and the second connecting member (7) are in an N-shaped structure, and the main body (5) is parallel to the outside of the fan housing (1).

5. The centrifugal fan guide plate adjustment device according to claim 3, characterized in that: The main body (5) of the adjusting device bracket (2) is provided with a threaded hole, and the screw portion of the adjusting rod (3) is screwed through the threaded hole of the main body (5).

6. The centrifugal fan guide plate adjustment device according to claim 3, characterized in that: Locking nuts (8) are respectively screwed onto the screw rod portions of the adjusting rod (3) at both ends of the main body (5) of the adjusting device bracket (2).

7. The centrifugal fan guide plate adjustment device according to claim 1 or 2, characterized in that: The centrifugal fan guide plate adjustment device comprises two, an adjustment device bracket (2) is respectively provided on each side of the fan housing (1), an adjustment rod (3) is respectively screwed onto each adjustment device bracket (2), each adjustment rod (3) is movable through one side of the fan housing (1) and extends into the interior of the fan housing (1), and one end of each adjustment rod (3) extending into the interior of the fan housing (1) is connected to a corresponding guide plate (4).

8. The centrifugal fan guide plate adjustment device according to claim 1 or 2, characterized in that: The end of the adjusting rod (3) is a square or polygonal end or a notch, and the centrifugal fan guide plate adjusting device also includes an adjusting wrench, and the adjusting wrench is provided with a square or polygonal notch or an end.

9. The centrifugal fan guide plate adjustment device according to claim 1 or 2, characterized in that: The adjusting device bracket (2) and the adjusting rod (3) are both made of metal materials.

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