Centrifugal fan shock absorbing base

Abstract

This utility model relates to a centrifugal fan vibration damping base, comprising a fixed base with positioning bolts adapted to the fan at the top. The fixed base is connected to a bottom positioning base via an inner stabilizing block. The outer side of the inner stabilizing block is connected to a shaped vibration damping component. The shaped vibration damping component has a matching metal outer frame on its outer side. An inner groove is formed between the inner stabilizing block and the shaped vibration damping component. A vibration damping spring is located on the outer ring of the inner stabilizing block, inside the inner groove. The bottom of the metal outer frame rests on the positioning base. The positioning base, fixed base, and inner stabilizing block are connected by a stabilizing column and further secured by a locking bolt in the center of the fixed base. The vibration damping spring, located inside the inner groove and not in direct contact with the outside, avoids damage to the vibration damping base. The shaped vibration damping component can meet vibration damping needs at multiple angles, providing more comprehensive vibration damping.

Description

Technical Field

[0001] This utility model belongs to the technical field of fan bases, specifically relating to a centrifugal fan vibration damping base. Background Technology

[0002] Centrifugal fans are machines that rely on input mechanical energy to increase gas pressure and discharge gas; they are a type of driven fluid machinery. Centrifugal fans are widely used in factories, mines, tunnels, cooling towers, vehicles, ships, and buildings for ventilation, dust removal, and cooling; in boilers and industrial furnaces for ventilation and induced draft; in air conditioning equipment and household appliances for cooling and ventilation; in grain drying and conveying; as wind sources in wind tunnels; and for inflating and propelling hovercraft. Due to their high rotational speed, they are prone to vibration during operation, which can affect their lifespan.

[0003] A shock-absorbing base and external rotor centrifugal fan, authorized by Chinese patent number CN219733746U, includes a fan body. A connecting sleeve is slidably fitted onto the outer wall of the fan body's air intake, and a fixing pin is slidably connected through the outer wall of the connecting sleeve. This invention, through the inclusion of a connecting block, a spring telescopic rod, and a mounting plate, allows the force generated by vibration in the fan body to be transmitted to the mounting plate. The mounting plate then transmits this force to the spring telescopic rod, which uses its elasticity to buffer and dissipate the vibration force, thus achieving a shock-absorbing effect. Simultaneously, the cooperation of the connecting plate, the sliding sleeve, and the compression spring alleviates the force borne by the spring telescopic rod, increasing its service life. However, this device only provides shock absorption in the horizontal and vertical directions, and the spring and telescopic rod are prone to malfunction due to prolonged exposure to the elements.

[0004] In summary, existing technologies have the problems of not being able to provide all-around vibration reduction and the exposed vibration damping springs affecting the service life of the vibration damping base. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] Therefore, the purpose of this utility model is to provide a centrifugal fan vibration damping base that can solve the problems of existing technologies that cannot provide all-round vibration damping and the vibration damping springs being exposed, affecting the service life of the vibration damping base. This utility model provides a centrifugal fan vibration damping base, which includes a fixed base. The fixed base has positioning bolts adapted to the fan on its upper part. The fixed base is connected to the bottom positioning base through an inner stabilizing block. The outer side of the inner stabilizing block is connected to a shaped vibration damping component. The outer side of the shaped vibration damping component has a metal outer frame adapted to it. The middle of the inner stabilizing block and the middle of the shaped vibration damping component form an inner groove. The vibration damping spring is located on the outer ring of the inner stabilizing block inside the inner groove. The bottom of the metal outer frame is located on the positioning base. The positioning base, the fixed base, and the inner stabilizing block are connected by a stabilizing column and are secondary fixed by a locking bolt in the middle of the fixed base.

[0007] Optionally, the inner ring where the irregularly shaped shock absorber intersects with the inner groove is an inflatable layer, and the inside of the inflatable layer is an inflatable airbag. The bottom of the inflatable layer is connected to the inflatable tube, which is located inside the positioning base and sealed by an inflatable block. The spiral pattern inside the inflatable block is adapted to the outer spiral ring on the outside of the inflatable tube, and the two are bolted together.

[0008] Optionally, a sealing ring is provided below the locking bolt, the locking bolt is set in the fixing groove in the middle of the fixing seat, and a sealing cover is provided above the fixing groove. The two are sealed by rubber clamping.

[0009] Optionally, the inner stabilizing blocks, from top to bottom, are a first rubber block, a second rubber block, a third rubber block, and a fourth rubber block. The first rubber block is a cylinder, with its top and the fixing base being a single unit. The second and third rubber blocks are both frustums of a cone, wider at the top and narrower at the bottom. The top of the third rubber block is the bottom of the second rubber block. The fourth rubber block is a frustum of a cone, narrower at the top and wider at the bottom. The top of the fourth rubber block and the bottom of the third rubber block are fitted together. The bottom of the fourth rubber block and the positioning base are a single unit.

[0010] Optionally, the first rubber block, the second rubber block, the third rubber block, and the fourth rubber block are a single unit.

[0011] Optionally, the shock-absorbing spring is adapted to the third and fourth rubber blocks in a structure that is wide at the top and bottom and narrow in the middle.

[0012] Optionally, an irregularly shaped outer shell is provided between the inner stabilizing block and the positioning base. The irregularly shaped outer shell has a structure that is wide in the middle and narrow at the top and bottom. The irregularly shaped outer shell, the top of the inflatable layer, and the side of the second rubber block are connected by anti-slip rubber pads. The bottom of the irregularly shaped outer shell is connected to the positioning base, and the bottom of the inflatable layer is connected to the fourth rubber block.

[0013] Optionally, the irregularly shaped outer shell is composed of multiple arcs, with the width of the middle arc being greater than the width of the upper and lower arcs.

[0014] Optionally, the top of the metal outer frame is located in the middle of the outer frame of the irregularly shaped outer shell, the inside of the metal outer frame is adapted to the irregularly shaped outer shell, and the two are fixed by anti-slip rubber. The outside is a truncated cone that is narrow at the top and wide at the bottom.

[0015] In summary, this utility model has at least one of the following beneficial effects: (1) This utility model achieves the effect of shock absorption by the interaction between the irregularly shaped outer shell and the inner stabilizing block when forces are applied in different directions. This avoids the problem of incomplete shock absorption when only horizontal and vertical shock absorption is applied. The device also enhances its service life by setting shock-absorbing springs and airbags to buffer the force inside. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of a centrifugal fan vibration damping base according to the present invention; Figure 2 This is a cross-sectional view of a centrifugal fan vibration damping base according to the present invention; Figure 3 This is a side view of the inlet and outlet pipes of a centrifugal fan vibration damping base according to the present invention; List of reference numerals in the attached diagram: 1. Fixing base; 101. Locking bolt; 2. Positioning bolt; 3. Inner stabilizing block; 301. First rubber block; 302. Second rubber block; 303. Stabilizing column; 304. Third rubber block; 305. Fourth rubber block; 306. Shock-absorbing spring; 4. Irregularly shaped shock-absorbing component; 401. Irregularly shaped outer shell; 402. Inflatable layer; 5. Metal outer frame; 6. Inflatable block; 7. Positioning base; 701. Inflatable tube. Implementation

[0018] The following is in conjunction with the appendix Figure 1-3 This utility model will be described in further detail below.

[0019] Example 1, refer to Figure 1-3In this embodiment, in order to solve the problems of existing technologies that cannot provide all-round vibration reduction and the vibration reduction springs being exposed, affecting the service life of the vibration reduction base, this utility model discloses a centrifugal fan vibration reduction base, including a fixed base 1. The fixed base 1 has positioning bolts 2 adapted to the fan for fixing the centrifugal fan. The fixed base 1 is connected to the bottom positioning base 7 through an inner stabilizing block 3. The three are integrated as a whole to ensure the stability of the vibration reduction base.

[0020] The inner stabilizing blocks 3, from top to bottom, consist of a first rubber block 301, a second rubber block 302, a third rubber block 304, and a fourth rubber block 305. The first rubber block 301 is a cylinder, with its top and the fixing base 1 forming a single unit. The second rubber block 302 and the third rubber block 304 are both frustums of a cone, wider at the top and narrower at the bottom, designed to receive forces generated by vibrations from above. The top of the third rubber block 304 is the bottom of the second rubber block 302. The fourth rubber block 305 is also a frustum of a cone, narrower at the top and wider at the bottom. The top of the fourth rubber block 305 fits into the bottom of the third rubber block 304, and the bottom of the fourth rubber block 305 is a single unit with the positioning base 7. The design, wider at the sides and narrower in the middle, facilitates the concentration and dispersion of forces received from above to the bottom, achieving a shock-absorbing effect through the deformation and interaction of the rubber blocks.

[0021] The irregularly shaped outer shell 401 has a structure that is wider in the middle and narrower at the top and bottom. The top of the irregularly shaped outer shell 401, the inflatable layer 402, and the sides of the second rubber block 302 are connected by anti-slip rubber pads to disperse the force received by the inner stabilizing block 3 and enhance the shock absorption effect. The irregularly shaped outer shell 401 is made of rubber, and its bottom is connected to the positioning base 7. The bottom of the inflatable layer 402 is connected to the fourth rubber block 305. The inflatable layer 402 serves to support and absorb shock, ensuring the stability of the device. Furthermore, the irregularly shaped outer shell 401 is composed of multiple arcs, with the width of the middle arc being greater than the width of the upper and lower arcs. The large force-bearing area of ​​the arcs can receive and disperse pressure from all directions.

[0022] The irregularly shaped shock absorber 4 has a matching metal outer frame 5 on its outer side. The top of the metal outer frame 5 is located in the middle of the outer frame of the irregularly shaped outer shell 401. The metal outer frame 5 is matched with the irregularly shaped outer shell 401 inside. The two are fixed by anti-slip rubber. The outer part is a truncated cone that is narrow at the top and wide at the bottom. The metal outer frame 5 is used for horizontal support to ensure the stability of horizontal shock absorption.

[0023] The inner stabilizing block 3 and the irregularly shaped damping component 4 form an inner groove. The damping spring 306 is located on the outer ring of the inner stabilizing block 3, inside the inner groove. The damping spring 306 is adapted to the third rubber block 304 and the fourth rubber block 305 with a structure that is wider at the top and bottom and narrower in the middle. This enhances the damping effect of the device and, at the same time, avoids contact with the outside environment by being placed in the inner groove, ensuring the stable operation of the damping spring 306.

[0024] The metal outer frame 5 is mounted on the positioning base 7. The positioning base 7, the fixed seat 1, and the inner stabilizing block 3 are connected by a stabilizing column 303 and are further secured by a locking bolt 101 in the middle of the fixed seat 1. A sealing ring is located below the locking bolt 101, which is positioned in a fixing groove in the middle of the fixed seat 1. A sealing cover is located above the fixing groove, and the two are sealed by rubber clamps. This ensures the stability of the device and thus guarantees its service life.

[0025] The inner ring where the irregularly shaped shock absorber 4 intersects with the inner groove is an inflatable layer 402. A partition is provided between the inflatable layer 402 and the inner groove for isolation. The interior of the inflatable layer 402 is an inflatable airbag. When the bottom of the inflatable layer 402 is connected to the inflation pipe 701, the inflation pipe 701 is located inside the positioning base 7 and is sealed by the inflation block 6. The spiral pattern inside the inflation block 6 matches the outer spiral ring of the inflation pipe 701, which is fixed on the outside, and the two are bolted together. Inflating the inflatable layer 402, due to the left and right limitation, can provide vertical support and extend the service life of this device.

[0026] Specific implementation principle: When using this utility model, firstly, the locking bolt 101 is fixed to ensure the stability of the stabilizing column 303. Then, the centrifugal fan is fixed to the fixed base 1 by the positioning bolt 2. When vibration occurs, the force is transmitted to the first rubber block 301, which in turn transmits the force to the second rubber block 302. Due to the contact between the irregularly shaped outer shell 401 and the second rubber block 302, the force is dispersed. Through the deformation of the rubber and the displacement at the intersection of the anti-slip surfaces, a buffering effect is achieved. The forces from multiple directions can be converted to achieve axial and radial vibration reduction, thus achieving more comprehensive vibration reduction. The damping spring 306 enables the inner stabilizing block 3 to quickly reset after receiving vibration, increasing the service life of the inner stabilizing block 3.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A centrifugal fan vibration damping base, comprising a fixed base (1), wherein the fixed base (1) has positioning bolts (2) adapted to the fan on its upper part, characterized in that, The fixed base (1) is connected to the bottom positioning base (7) via the inner stabilizing block (3). The outer side of the inner stabilizing block (3) is connected to the irregular shock absorber (4). The outer side of the irregular shock absorber (4) has a metal outer frame (5) that is adapted to it. The middle of the inner stabilizing block (3) and the middle of the irregular shock absorber (4) is an inner groove. The shock absorber spring (306) is located on the outer ring of the inner stabilizing block (3). Inside the inner groove, the bottom of the metal outer frame (5) is located on the positioning base (7). The positioning base (7), the fixed base (1) and the inner stabilizing block (3) are connected by the stabilizing column (303). The fixed base (1) is fixed for a second time by the locking bolt (101) in the middle of the fixed base (1).

2. A vibration isolation base for a centrifugal fan as defined in claim 1, wherein The inner ring where the irregular shock absorber (4) intersects with the inner groove is an air layer (402). Inside the air layer (402) is an airbag. The bottom of the air layer (402) is connected to the air tube (701). The air tube (701) is located inside the positioning base (7) and is sealed by the air block (6). The spiral pattern set inside the air block (6) is compatible with the outer spiral ring of the air tube (701) fixed on the outside. The two are bolted together.

3. The centrifugal fan vibration damping base according to claim 1, characterized in that, A sealing ring is provided below the locking bolt (101), and the locking bolt (101) is set in the fixing groove in the middle of the fixing seat (1). A sealing cover is provided above the fixing groove, and the two are sealed by rubber clamping.

4. A vibration isolation base for a centrifugal fan as defined in claim 1, wherein The inner stabilizing blocks (3) are, from top to bottom, a first rubber block (301), a second rubber block (302), a third rubber block (304), and a fourth rubber block (305). The first rubber block (301) is a cylinder, and its top and the fixed base (1) are a whole. The second rubber block (302) and the third rubber block (304) are both frustums that are wider at the top and narrower at the bottom. The top of the third rubber block (304) is the bottom of the second rubber block (302). The fourth rubber block (305) is a frustum that is narrower at the top and wider at the bottom. The top of the fourth rubber block (305) and the bottom of the third rubber block (304) are adapted to each other. The bottom of the fourth rubber block (305) and the positioning base (7) are a whole.

5. A vibration isolation mount for a centrifugal fan according to claim 4, wherein The first rubber block (301), the second rubber block (302), the third rubber block (304), and the fourth rubber block (305) are a whole.

6. A vibration isolation mount for a centrifugal fan according to claim 4, wherein The shock-absorbing spring (306) is adapted to the third rubber block (304) and the fourth rubber block (305) to form a structure that is wide at the top and bottom and narrow in the middle.

7. A centrifugal fan vibration damping base according to claim 4, characterized in that, An irregularly shaped outer shell (401) is provided between the inner stabilizing block (3) and the positioning base (7). The irregularly shaped outer shell (401) has a structure that is wide in the middle and narrow at the top and bottom. The top of the irregularly shaped outer shell (401), the air layer (402), and the side of the second rubber block (302) are connected by anti-slip rubber pads. The bottom of the irregularly shaped outer shell (401) is connected to the positioning base (7), and the bottom of the air layer (402) is connected to the fourth rubber block (305).

8. A centrifugal fan vibration damping base according to claim 7, characterized in that, The irregularly shaped outer shell (401) is composed of multiple arc shapes. The width of the middle arc is greater than the width of the top and bottom arcs.

9. A vibration isolation mount for a centrifugal fan according to claim 7, wherein The top of the metal outer frame (5) is located in the middle of the outer frame of the irregular shell (401). The inside of the metal outer frame (5) and the irregular shell (401) are adapted to each other and are fixed by anti-slip rubber. The outside is a truncated cone that is narrow at the top and wide at the bottom.

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