Centrifugal fan stable in operation

Abstract

The utility model relates to the technical field of centrifugal fans, and discloses a stable-operation centrifugal fan which comprises a centrifugal fan body, a base is fixedly installed at the bottom end of the centrifugal fan body, a contraction groove is formed in the bottom end of the base, a groove is formed in the top end of the inner wall of the contraction groove, and a supporting frame is clamped in the groove. According to the centrifugal fan stable in operation, universal wheels can make contact with the ground, the universal wheels push the base to drive the bottom frame to be separated from the ground, at the moment, a person can directly push the centrifugal fan body to move, and therefore the person can carry the centrifugal fan conveniently; according to the technical scheme, manpower is saved, the carrying efficiency is greatly improved, and the problems that in the prior art, the bottom of a machine body is not provided with a moving structure, the weight of the machine body is large, people need to consume more manpower when carrying the machine body, the difficulty is large, and the carrying efficiency is affected are solved.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal fan technology, specifically to a centrifugal fan with stable operation. Background Technology

[0002] Centrifugal fans are machines that rely on input mechanical energy to increase gas pressure and discharge gas. They are widely used in industries such as power plants and mines.

[0003] According to Chinese Patent Publication No. CN214837400U, a stable centrifugal fan is disclosed. It features a top plate fixedly connected to the bottom of the unit, with a damping spring fixedly connected to the bottom of the top plate. When the unit vibrates during operation, the vibration is transmitted to the damping spring. The damping spring's shock absorption effectively protects the unit's lifespan and prevents excessive vibration from causing internal parts to loosen, thus achieving stable operation. A first dustproof net and a second dustproof net are movably connected inside the air vent, effectively preventing dust from clogging the vent and reducing airflow. In smaller cases, since both the first and second dustproof nets are connected to the housing on their upper and lower sides, when it is necessary to disassemble and clean the dust from the first and second dustproof nets, the limiting post is pulled out from the connecting hole in the connecting rod, and then the tightening block on the outer surface of the connecting rod is loosened and pulled out from the housing, thus achieving the effect of easy disassembly and cleaning and extending the service life of the machine. In this technical solution, the bottom of the machine does not have a movable structure, and the machine itself is heavy, which makes it difficult to move when personnel need to move it, thus affecting the efficiency of handling. Therefore, we propose a centrifugal fan with stable operation. Utility Model Content

[0004] The purpose of this invention is to provide a stable centrifugal fan that solves the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a centrifugal fan with stable operation, comprising a centrifugal fan body, a base fixedly installed at the bottom end of the centrifugal fan body, a shrinkage groove at the bottom end of the base, a groove at the top end of the inner wall of the shrinkage groove, a support frame engaging in the groove, an adjustment groove at the top end of the inner wall of the groove, an inclined block fixedly installed at the top end of the support frame, a screw rotatably connected to the back of the base via a bearing seat, a compression frame threaded onto the outer wall of the screw, the compression frame movably extending through the back of the base into the adjustment groove, and inclined surfaces provided at both ends of the compression frame, the top end of the inclined block slidingly connected to the inclined surface of the compression frame, a caster wheel fixedly installed at the bottom end of the support frame, an installation groove at the top end of the inner wall of the groove, and a spring fixedly connected between the top end of the support frame and the inner wall of the installation groove.

[0006] Preferably, a limiting post is fixedly installed at the top of the support frame, and a post groove is opened at the top of the inner wall of the mounting groove. The limiting post is inserted into the post groove, and the spring surrounds the outer wall of the limiting post. By setting the limiting post, the support frame and the spring can be limited, ensuring the stability of the support frame and the spring when compressed during use.

[0007] Preferably, the support frame is adapted to the groove.

[0008] Preferably, a support pad is fixedly installed at the bottom of the base, a bottom frame is fixedly installed at the bottom of the support pad, and limit rods are fixedly installed at the four corners of the bottom of the base. A rod groove is opened at the top of the bottom frame near the four corners, and the limit rod is inserted into the rod groove. By setting the support pad, the centrifugal fan body can play a certain role in shock absorption when it is running, reducing the impact of vibration on the internal structure of the centrifugal fan.

[0009] Preferably, the limiting rod is adapted to the rod groove, and the support pad is made of wear-resistant rubber. By setting the limiting rod, the bottom frame can be limited, thereby improving the stability of the bottom frame during use.

[0010] Preferably, the bottom end of the bottom frame is provided with a toothed groove, and the number of the toothed grooves is several. By setting the toothed grooves, the friction between the bottom frame and the ground can be increased, the support stability of the bottom frame can be improved, thereby improving the stability of the centrifugal fan body during operation.

[0011] This invention provides a centrifugal fan that operates stably. This stable centrifugal fan offers the following advantages:

[0012] (1) The centrifugal fan that operates stably can make the casters contact the ground, so that the casters push the base and lift the bottom frame off the ground. At this time, personnel can directly push the centrifugal fan body to move, which makes it easier for personnel to move it, saves manpower, and greatly improves the handling efficiency. It solves the problem that the bottom of the machine body does not have a moving structure in the existing technical solution, and the machine body itself is heavy, which makes it difficult for personnel to move it, thus affecting the handling efficiency.

[0013] (2) The centrifugal fan that operates stably can reduce the vibration of the centrifugal fan body during operation by setting support pads, thereby reducing the impact of vibration on the internal structure of the centrifugal fan. In addition, by setting tooth grooves, the friction between the bottom frame and the ground can be increased, thereby improving the support stability of the bottom frame and thus improving the stability of the centrifugal fan body during operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the side cross-sectional structure of the extrusion frame of this utility model;

[0016] Figure 3 This is a side sectional view of the support frame of this utility model;

[0017] Figure 4 This is a schematic diagram of the bottom structure of this utility model;

[0018] Figure 5 This is a side sectional view of the limiting rod of this utility model;

[0019] Figure 6 This utility model Figure 2 Enlarged structural diagram of section A in the middle;

[0020] Figure 7 This utility model Figure 3 Enlarged structural diagram of section B.

[0021] In the diagram: 1. Centrifugal fan body; 2. Base; 3. Shrinkage groove; 4. Extrusion frame; 5. Screw; 6. Knob; 7. Gear groove; 8. Support frame; 9. Groove; 10. Caster wheel; 11. Adjustment groove; 12. Angled top block; 13. Limiting post; 14. Mounting groove; 15. Spring; 16. Column groove; 17. Base frame; 18. Limiting rod; 19. Rod groove; 20. Support pad. Detailed Implementation

[0022] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0023] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] like Figure 1-7 As shown, this utility model provides a technical solution: a centrifugal fan with stable operation, including a centrifugal fan body 1, a base 2 fixedly installed at the bottom of the centrifugal fan body 1, a shrinkage groove 3 opened at the bottom of the base 2, a groove 9 opened at the top of the inner wall of the shrinkage groove 3, a support frame 8 engaged in the groove 9, an adjustment groove 11 opened at the top of the inner wall of the groove 9, an inclined block 12 fixedly installed at the top of the support frame 8, a screw 5 rotatably connected to the back of the base 2 through a bearing seat, a compression frame 4 threaded on the outer wall of the screw 5, the compression frame 4 movably extending through the back of the base 2 into the adjustment groove 11, and inclined surfaces provided at both ends of the compression frame 4, the top of the inclined block 12 slidingly connected to the inclined surface of the compression frame 4, a universal wheel 10 fixedly installed at the bottom of the support frame 8, an installation groove 14 opened at the top of the inner wall of the groove 9, and a spring 15 fixedly connected between the top of the support frame 8 and the inner wall of the installation groove 14.

[0026] Specifically, in the above technical solution, when the stable centrifugal fan needs to be moved, the knob 6 can be rotated. The knob 6 drives the screw 5 to rotate, and the screw 5 drives the extrusion frame 4 to move into the adjustment groove 11. This causes the extrusion frame 4 to press the inclined top block 12 downward. The inclined top block 12 drives the support frame 8 downward, causing the support frame 8 to stretch the spring 15. This causes the support frame 8 to drive the caster 10 downward, so that the caster 10 extends out of the contraction groove 3 and contacts the ground. The caster 10 then pushes the base 2, causing the bottom frame 17 to lift off the ground. At this time, personnel can directly push the centrifugal fan body 1 to move it, which facilitates its handling, saves manpower, and greatly improves handling efficiency. This solves the problem in the existing technical solution that the bottom of the machine body does not have a moving structure, and the machine body itself is heavy, which leads to a lot of manpower being needed to move it, making it difficult and affecting the handling efficiency.

[0027] Furthermore, a limiting post 13 is fixedly installed at the top of the support frame 8, and a post groove 16 is opened at the top of the inner wall of the mounting groove 14. The limiting post 13 is inserted into the post groove 16, and the spring 15 surrounds the outer wall of the limiting post 13.

[0028] The limiting post 13 can limit the support frame 8 and the spring 15, ensuring the stability of the support frame 8 and the spring 15 during compression.

[0029] Furthermore, the support frame 8 is adapted to the groove 9.

[0030] Furthermore, a support pad 20 is fixedly installed at the bottom of the base 2, and a bottom frame 17 is fixedly installed at the bottom of the support pad 20. Limiting rods 18 are fixedly installed at the bottom of the base 2 near the four corners. Rod slots 19 are opened at the top of the bottom frame 17 near the four corners, and the limiting rods 18 are inserted into the rod slots 19.

[0031] When the centrifugal fan body 1 is running, the knob 6 can be reversed so that the compression frame 4 no longer compresses the inclined top block 12. At this time, the support frame 8 will drive the universal wheel 10 to move upward under the reset force of the spring 15, so that the universal wheel 10 retracts into the shrink groove 3, and the base 2 drives the bottom frame 17 to contact the ground. By setting the support pad 20, a certain shock absorption effect can be achieved on the centrifugal fan body 1 during operation, reducing the impact of vibration on the internal structure of the centrifugal fan.

[0032] Furthermore, the limiting rod 18 is adapted to the rod groove 19, and the support pad 20 is made of wear-resistant rubber;

[0033] The bottom frame 17 can be limited by the limiting rod 18, which improves the stability of the bottom frame 17 during use.

[0034] Furthermore, the bottom end of the bottom frame 17 is provided with a toothed groove 7, and the number of toothed grooves 7 is several;

[0035] By setting the toothed groove 7, the friction between the bottom frame 17 and the ground can be increased, the support stability of the bottom frame 17 can be improved, thereby improving the stability of the centrifugal fan body 1 during operation.

[0036] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A centrifugal fan with stable operation, comprising a centrifugal fan body (1), wherein a base (2) is fixedly installed at the bottom end of the centrifugal fan body (1), characterized in that: The base (2) has a shrinkage groove (3) at the bottom end, and a groove (9) is provided at the top of the inner wall of the shrinkage groove (3). A support frame (8) is engaged in the groove (9). An adjustment groove (11) is provided at the top of the inner wall of the groove (9). An inclined top block (12) is fixedly installed at the top of the support frame (8). A screw (5) is rotatably connected to the back of the base (2) through a bearing seat. A compression frame (4) is threaded on the outer wall of the screw (5). The compression frame (4) extends through the back of the base (2) and into the adjustment groove (11). The compression frame (4) has inclined surfaces at both ends. The top of the inclined top block (12) is slidably connected to the inclined surface of the compression frame (4). A caster wheel (10) is fixedly installed at the bottom end of the support frame (8). An installation groove (14) is provided at the top of the inner wall of the groove (9). A spring (15) is fixedly connected between the top of the support frame (8) and the inner wall of the installation groove (14).

2. The centrifugal fan with stable operation according to claim 1, characterized in that: The top of the support frame (8) is fixedly installed with a limiting post (13), and the top of the inner wall of the mounting groove (14) is provided with a column groove (16). The limiting post (13) is inserted into the column groove (16), and the spring (15) surrounds the outer wall of the limiting post (13).

3. A centrifugal fan with stable operation according to claim 1, characterized in that: The support frame (8) is adapted to the groove (9).

4. A centrifugal fan with stable operation according to claim 1, characterized in that: The base (2) is fixedly installed with a support pad (20) at the bottom end, and a bottom frame (17) is fixedly installed at the bottom end of the support pad (20). Limiting rods (18) are fixedly installed at the bottom end of the base (2) near the four corners. A rod groove (19) is opened at the top of the bottom frame (17) near the four corners. The limiting rod (18) is inserted into the rod groove (19).

5. A centrifugal fan with stable operation according to claim 4, characterized in that: The limiting rod (18) is adapted to the rod groove (19), and the support pad (20) is made of wear-resistant rubber.

6. A centrifugal fan with stable operation according to claim 4, characterized in that: The bottom frame (17) has a toothed groove (7) at its bottom end, and the number of the toothed grooves (7) is several.

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